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WO2020038331A1 - 确定上行资源的方法与装置 - Google Patents

确定上行资源的方法与装置 Download PDF

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Publication number
WO2020038331A1
WO2020038331A1 PCT/CN2019/101364 CN2019101364W WO2020038331A1 WO 2020038331 A1 WO2020038331 A1 WO 2020038331A1 CN 2019101364 W CN2019101364 W CN 2019101364W WO 2020038331 A1 WO2020038331 A1 WO 2020038331A1
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WO
WIPO (PCT)
Prior art keywords
carrier
uplink
resource
resources
target
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2019/101364
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English (en)
French (fr)
Inventor
袁世通
管鹏
陈雷
张希
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Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP19851593.4A priority Critical patent/EP3820222A4/en
Publication of WO2020038331A1 publication Critical patent/WO2020038331A1/zh
Priority to US17/164,975 priority patent/US20210160924A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/04—Scheduled access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952—Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • H04B7/06964—Re-selection of one or more beams after beam failure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0841—Random access procedures, e.g. with 4-step access with collision treatment
    • H04W74/085—Random access procedures, e.g. with 4-step access with collision treatment collision avoidance
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]

Definitions

  • the present application relates to the field of communications, and in particular, to a method and device for determining uplink resources. .
  • a cell consists of a downlink carrier and an uplink carrier.
  • the terminal device When the terminal device performs uplink transmission, it selects resources for uplink transmission from the resources on one uplink carrier.
  • the terminal device has multiple uplink carriers for uplink transmission.
  • the new air interface (new radio (NR)) system introduces a supplementary uplink (supplementary uplink) (SUL) carrier to assist terminal equipment in uplink transmission. That is, in a cell supporting a SUL carrier, a terminal device may have two segments of spectrum for uplink transmission, one segment of spectrum may be referred to as an NR uplink (NUL) carrier, and the other segment of spectrum may be referred to as a SUL carrier.
  • NUL NR uplink
  • the present application provides a method and an apparatus for determining uplink resources, which can enable a terminal device to determine resources for uplink transmission from multiple uplink carriers when there are multiple uplink carriers, for example, to determine resources for BFR, and Improve the efficiency of BFR.
  • a method for determining uplink resources is provided, and the method is executed by a terminal device or a chip used for the terminal device.
  • the method includes: determining a target uplink resource from resources on multiple uplink carriers; and using the target uplink resource to send a beam failure recovery request (BFRQ) message to a network device.
  • BFRQ beam failure recovery request
  • Multiple uplink carriers are configured with resources for beam failure recovery (BFR) of the current cell, that is, resources for sending BFRQ messages.
  • BFR beam failure recovery
  • the current cell indicates a cell where beam failure has occurred.
  • the uplink resources used for BFR may be random access (random access channel, RACH) resources.
  • the target uplink resource is a resource for BFR on one of the multiple uplink carriers.
  • a target uplink resource for sending a beam failure recovery request message is determined, in order to improve the efficiency of beam failure recovery.
  • resources for BFR on multiple uplink carriers may be pre-configured by a network device.
  • a network device may pre-configure a terminal device with resources for BFR on multiple uplink carriers through radio resource control (RRC) signaling.
  • RRC radio resource control
  • the network device may also pre-configure resources for BFR on multiple uplink carriers through other downlink signaling, which is not limited in this application.
  • the multiple uplink carriers may be low-frequency carriers, or may be high-frequency carriers, or some of them are high-frequency carriers and the other are low-frequency carriers.
  • the terms "high frequency” and "low frequency” mentioned in this article are relative concepts and have no strict limitation meaning.
  • a low-frequency carrier may refer to a carrier operating below 6 GHz
  • a high-frequency carrier may refer to a carrier operating at 6 GHz and above.
  • high-frequency carriers and low-frequency carriers may have new definitions.
  • the multiple uplink carriers include a primary uplink carrier and a supplementary uplink carrier.
  • the primary uplink carrier is a NUL carrier
  • the supplementary uplink carrier is a SUL carrier.
  • the current cell is the primary cell.
  • the multiple uplink carriers may include the uplink carrier of the primary cell and the uplink carrier of the secondary cell. If the primary cell supports the SUL technology, the multiple uplink carriers may include the NUL carrier and the SUL carrier of the primary cell, and the uplink carriers of the secondary cell. If the secondary cell also supports the SUL technology, the multiple uplink carriers may include the NUL carrier and the SUL carrier of the primary cell, and the NUL carrier and the SUL carrier of the secondary cell.
  • Multiple uplink carriers may be configured with non-competitive resources and / or competitive resources.
  • the non-competitive resources used for BFR may be non-competitive random access resources (contention-free RACH resource), and the competitive resources used for BFR may be Contention-based RACH resources.
  • multiple uplink carriers may also be configured with resources for sending uplink scheduling request (SR), pre-configured semi-static or unlicensed uplink resources, physical uplink control channel (PUCCH) Resources or other uplink resources.
  • SR uplink scheduling request
  • PUCCH physical uplink control channel
  • Multiple uplink carriers may also be configured with non-competing resources except for competing random access resources, and / or may be configured with other competing resources in addition to competing access resources.
  • determining a target uplink resource from resources on multiple uplink carriers includes: when at least one of the multiple uplink carriers has non-competitive resources , Determining a non-contention resource on one uplink carrier Y among the at least one uplink carrier as a target uplink resource.
  • the uplink carrier Y may be a NUL carrier or a SUL carrier.
  • the uplink carrier Y may be an uplink carrier of the primary cell or an uplink carrier of the secondary cell.
  • the non-contention random access resource is preferentially selected as the target uplink resource.
  • it is first to determine whether there are non-competing random access resources available on the multiple uplink carriers. If yes, use the non-competing random access resources on one of the uplink carriers as the target. Uplink resources, if not, select a competitive random access resource on an uplink carrier as the target uplink resource.
  • the terminal device initiates random access using non-competitive random access resources, and no collision occurs and no conflict resolution is required. Therefore, compared to initiating random access using a contention-based random access resource and initiating random access using a non-contention-based random access resource, the terminal device has a smaller access delay and a higher access success rate. Therefore, the present application can improve the efficiency and success rate of beam failure recovery by preferentially selecting non-competing random access resources from multiple uplink carriers to send a beam failure recovery request message.
  • the multiple uplink carriers include a primary uplink carrier and a supplementary uplink carrier of the current cell; and determining non-competitive resources on one uplink carrier among at least one uplink carrier as The target uplink resource includes: when at least one uplink carrier includes a primary uplink carrier, determining non-competitive resources on the primary uplink carrier as the target uplink resource.
  • non-competing random resources on the primary uplink carrier are preferentially selected as the target uplink resources.
  • the multiple uplink carriers include a NUL carrier and a SUL carrier; determining a target uplink resource from the multiple uplink carriers includes: preferentially selecting non-competition on the NUL carrier Random access resources are used as target uplink resources.
  • the process of selecting a target uplink resource from multiple uplink carriers it can be preferentially determined whether there is a non-competitive random access resource available on the NUL carrier, and if so, the non-competitive random access resource on the NUL carrier is used as the target uplink resource. If not, use the competitive random access resource on the NUL carrier or the random access resource on the SUL carrier as the target uplink resource.
  • the NUL carrier determines whether there is a non-competitive random access resource on the SUL carrier, and if so, use the non-competitive random access resource on the SUL carrier as the target uplink resource, If not, use the competitive random access resource on the SUL carrier or the competitive random access resource on the NUL carrier as the target uplink resource.
  • the NUL carrier may work in the high frequency band, a larger subcarrier interval defined by the protocol may be used for transmission, and the corresponding symbol time (absolute time) is shorter. Therefore, compared to the SUL carrier, the The configuration of random access resources can be more intensive, which can make the terminal device have more opportunities to use resources in a relatively short time. Therefore, the non-competitive random access resources on the NUL carrier are preferentially selected to reduce transmission delay.
  • the non-competitive random access resources on the NUL carrier among the multiple uplink carriers are preferentially selected to send the BFRQ message, which can reduce the BFR delay and thus be effective. Improve the efficiency of BFR.
  • the total number of non-competing random access resources on the NUL carrier is large, and associated non-competing random access resources can be configured for downlink narrow beams (such as CSI-RS), so that after completing the BFR, the terminal device can There is no need to perform beam scanning and beam training again, so that the terminal device can experience a relatively short data transmission recovery delay. Therefore, preferential selection of non-competitive random access resources on the NUL carrier can reduce the delay of the BFR, thereby improving the efficiency of the BFR.
  • CSI-RS downlink narrow beams
  • the multiple uplink carriers include a primary uplink carrier and a supplementary uplink carrier of the current cell; and determining non-competitive resources on one uplink carrier among at least one uplink carrier as The target uplink resource includes: when at least one uplink carrier includes a supplementary uplink carrier, determining a non-competitive resource on the supplementary uplink carrier as the target uplink resource.
  • the non-competitive random resource on the supplementary uplink carrier is preferentially selected as the target uplink resource.
  • the multiple uplink carriers include a NUL carrier and a SUL carrier; determining a target uplink resource from the multiple uplink carriers includes: preferentially selecting non-competition on the SUL carrier Random access resources are used as target uplink resources.
  • the process of selecting a target uplink resource from multiple uplink carriers it can be preferentially determined whether there is a non-competitive random access resource available on the SUL carrier, and if so, the non-competitive random access resource on the SUL carrier is used as the target uplink resource. If not, use the competitive random access resource on the SUL carrier or the random access resource on the NUL carrier as the target uplink resource.
  • the competitive random access resource on the SUL carrier is used as the target uplink resource If not, use the contention random access resource (non-contention random access resource first) on the NUL carrier as the target uplink resource.
  • the non-competitive random access resource on the NUL carrier is used as The target uplink resource, if not, use the competitive random access resource on the SUL carrier or the competitive random access resource on the NUL carrier as the target uplink resource.
  • the BFRQ message is preferentially sent using non-competitive random access resources on the uplink carrier whose frequency band / center frequency is relatively low on multiple uplink carriers.
  • the transmission power of the terminal device is limited.
  • the terminal device transmits signals with the same power, the path loss of the low-frequency signal in free space is smaller than that of the high-frequency signal.
  • the SUL carrier works in a lower frequency band, and the SUL carrier has better uplink coverage than the NUL carrier. Therefore, sending BFRQ messages preferentially using non-competing random access resources on the SUL carrier can improve the transmission reliability of BFRQ messages, and thus increase the success probability of BFR. For example, in a high-frequency system beam failure scenario, a non-contention random access resource on a SUL carrier may be used to send a BFRQ message first.
  • the scheme for preferentially selecting non-competing random access resources on multiple uplink carriers as the target uplink resource proposed in this application does not absolutely limit the use priority of all non-competing random access resources on multiple uplink carriers. All are higher than all competing random access resources on multiple uplink carriers.
  • the use priority of the non-competing random access resources on the NUL carrier may be lower than the competing random access resources on the SUL carrier.
  • the non-competitive random access resources on the SUL carrier among the multiple uplink carriers are preferentially selected to send the BFRQ message.
  • the transmission power of the terminal device is limited.
  • the terminal device transmits signals with the same power, the path loss of the low-frequency signal in free space is smaller than that of the high-frequency signal.
  • the SUL carrier works in a lower frequency band, and the SUL carrier has better uplink coverage than the NUL carrier. Therefore, sending BFRQ messages preferentially using non-competing random access resources on the SUL carrier can improve the transmission reliability of BFRQ messages, thereby increasing the success probability of BFR
  • the multiple uplink carriers include a NUL carrier and a SUL carrier; selecting a target uplink resource from the multiple uplink carriers includes: detecting a candidate of a current cell When the beam quality exceeds the threshold, the non-competing random resource on the NUL carrier is preferentially selected as the target uplink resource; when the candidate beam quality of the current cell is detected to be lower than the threshold, the non-competing random on the SUL carrier is preferentially selected Resources are used as target uplink resources.
  • the terminal device can obtain the quality of the candidate beam through measurement.
  • the quality of the candidate beam may be a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ) of the candidate beam.
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the threshold used to measure the quality of the candidate beam may be specified by the protocol.
  • the threshold used to measure the quality of the candidate beam may be configured by the network device.
  • the network device may configure the threshold through RRC signaling or other downlink signaling.
  • determining a target uplink resource from resources on multiple uplink carriers includes: when no non-competing resources are available on multiple uplink carriers, A contention resource on one of the uplink carriers is determined as a target uplink resource.
  • determining the competitive resource on one of the multiple uplink carriers as the target uplink resource includes: determining the competitive resource on the supplementary uplink carrier as the target uplink resource.
  • the multiple uplink carriers include a primary uplink carrier and a supplemental uplink carrier of a current primary cell, and an uplink carrier of a secondary cell; resources from multiple uplink carriers
  • the determination of the target uplink resource includes: when there is no non-competitive resource available on the primary uplink carrier of the primary cell, determining the non-competitive resource on the uplink carrier of the secondary cell as the target uplink resource; When all carriers have no available resources, the resources on the uplink carrier of the secondary cell are determined as the target uplink resources.
  • the process of selecting a target uplink resource from multiple uplink carriers it is first determined whether there is a non-competitive random access resource available on the NUL carrier of the primary cell, and if so, the non-competitive random access on the NUL carrier is randomly determined The access resource is used as the target uplink resource. If not, determine whether there is a non-competitive random access resource available on the uplink carrier of the secondary cell; if the non-competitive random access resource is available on the uplink carrier of the secondary cell, select the secondary cell's The non-competitive random access resources on the uplink carrier are used as the target uplink resources. Otherwise, it is determined whether there is an available non-competitive random access resource on the SUL carrier of the primary cell.
  • the non-competitive random access on the SUL carrier of the primary cell is used.
  • Resources are used as target uplink resources; if there are no non-competing random access resources available on the uplink carriers of the primary cell and the secondary cell, the competitive random access resources on one uplink carrier of the primary cell or the secondary cell are used as the target uplink resources.
  • the process of selecting a target uplink resource from multiple uplink carriers it is first determined whether there is a non-competitive random access resource available on the NUL carrier of the primary cell, and if so, the non-competitive random access on the NUL carrier is randomized.
  • the access resource is used as the target uplink resource. If not, determine whether there is a non-competitive random access resource available on the SUL carrier of the primary cell; if the non-competitive random access resource is available on the SUL carrier of the primary cell, use it as the target.
  • Uplink resources otherwise, determine whether there is a non-competitive random access resource available on the uplink carrier of the secondary cell; if a non-competitive random access resource is available on the uplink carrier of the secondary cell, use it as the target uplink resource; if the primary cell There is no non-competitive random access resource available on the uplink carrier of the secondary cell, and the competitive random access resource on one uplink carrier of the primary cell or the secondary cell is used as the target uplink resource.
  • determining the target uplink resource from multiple uplink carriers includes: selecting a target uplink carrier from multiple uplink carriers according to preset priority information, and The priority information is used to indicate a sequence of using resources on multiple uplink carriers; a target uplink resource is determined on a target uplink carrier.
  • the resource use priority is: non-competitive random access resources of the NUL carrier> non-competitive random access resources of the SUL carrier> competitive random access resources of the SUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the SUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the SUL carrier of the primary cell> on the uplink carrier of the secondary cell
  • the resource use priority is: non-competitive random access resources on the SUL carrier of the primary cell> non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the uplink carrier of the secondary cell> Contention random access resources on the SUL carrier of the primary cell> Contention random access resources on the NUL carrier of the primary cell> Contention random access resources on the uplink carrier of the secondary cell.
  • the resource use priority may indicate a use priority order of multiple uplink resources, and may also directly indicate a resource type with the highest priority.
  • the resource usage priority may be specified by the protocol.
  • the resource usage priority may be pre-configured by the network device.
  • the network device may configure the resource use priority for the terminal device through RRC signaling or other downlink signaling.
  • the network device may configure a priority order of using resources, or may directly indicate a resource type with the highest priority.
  • resources on the uplink carrier of the primary cell are selected according to the quality of the candidate beam of the primary cell and the quality of the candidate beam of the secondary cell.
  • the resource on the uplink carrier of the secondary cell is used as the target uplink resource.
  • the quality of the candidate beam can be RSRP or RSRQ.
  • resources on the uplink carrier of the primary cell are selected as the target uplink. Resources, that is, resources on the uplink carrier of the primary cell are preferentially used.
  • the resource on the uplink carrier of the primary cell is selected as the target uplink resource, that is, the uplink carrier on the secondary cell is preferentially used. Resources.
  • the preset offset may be pre-configured by the network device.
  • the network device pre-configures the preset offset through RRC signaling or other downlink signaling.
  • the preset offset may also be prescribed by a protocol.
  • determining a target uplink resource from resources on multiple uplink carriers includes: according to a beam attribute associated with resources on multiple uplink carriers, A target uplink carrier is selected among the three uplink carriers; a resource on the target uplink carrier is determined as a target uplink resource.
  • this implementation manner is applied to a scenario in which each of the multiple uplink carriers has only competing resources, or each has only non-competing resources.
  • the multiple uplink carriers include a first carrier and a second carrier, a resource-associated channel state information reference signal CSI-RS on the first carrier, and a second carrier On the resource associated sync signal block SSB. Selecting the target uplink carrier from the multiple uplink carriers according to the beam attributes associated with the resources on the multiple uplink carriers, respectively, includes: determining the first carrier as the target uplink carrier.
  • the SSB is generally considered to be a wide beam and the CSI-RS is a narrow beam.
  • multiple CSI-RSs can be considered to be quasi-co-location (QCL) to one SSB. If the terminal equipment fails to recover to a narrow beam, the beamforming gain can be increased, which can support higher data rates.
  • the restored beam can obtain a higher antenna gain (beam-forming gain), This can support higher data rates.
  • the multiple uplink carriers include a third carrier and a fourth carrier, and the number of candidate beams associated with resources on the third carrier is less than or equal to that on the fourth carrier The number of candidate beams associated with the resource; selecting the target uplink load from the multiple uplink carriers according to the beam attributes associated with the resources on the multiple uplink carriers, including: determining the third carrier as the target uplink carrier.
  • a beam failure recovery timer (beam failure recovery timer) is configured on the NUL carrier. If the beam fails and the recovery timer times out, the non-contention random access resources on the NUL carrier are unavailable.
  • a beam failure recovery timer (beam failure recovery timer) is configured on the SUL carrier. If the beam failure recovery timer times out, the non-contention random access resources on the SUL carrier are unavailable.
  • the beam failure recovery timer of the NUL carrier and the beam failure recovery timer of the SUL carrier can be configured by the network device.
  • the network device configures a beam failure recovery timer on the NUL carrier and a beam failure recovery timer on the SUL carrier through RRC signaling or other signaling.
  • the target uplink resource is a competitive resource; the method further includes: receiving an association relationship between the uplink carrier and the downlink carrier from a network device; using the uplink where the target uplink resource is located The downlink carrier associated with the carrier receives the beam recovery response message sent by the network device.
  • the beam failure recovery request (BFRQ) message in the method provided by the first aspect is replaced by an uplink scheduling request message, and the beam failure recovery (BFR) is replaced by uplink scheduling.
  • BFRQ beam failure recovery request
  • Such a solution can be applied to the selection of multiple uplink carriers. Resources for uplink scheduling.
  • the beam failure recovery request (BFRQ) message in the method provided in the first aspect is replaced with uplink data, and the beam failure recovery (BFR) is replaced with uplink data transmission.
  • BFRQ beam failure recovery request
  • Such a solution can be applied to selecting among multiple uplink carriers for Resources for uplink data transmission.
  • a method for determining uplink resources is provided.
  • the method is performed by, for example, a network device or a chip for a network device.
  • the method includes: sending configuration information to a terminal device, the configuration information including information used to instruct the terminal device to select a target uplink resource for BFR from multiple uplink carriers; and receiving a BFRQ message sent by the terminal device using the target uplink resource.
  • the present application determines a target uplink resource for sending a beam failure recovery request message in order to improve the efficiency of beam failure recovery.
  • the multiple uplink carriers are configured with resources for beam failure recovery (BFR) of the current cell, that is, resources for sending a beam failure recovery request (BFRQ) message.
  • BFR beam failure recovery
  • the method further includes: the network device configuring the terminal device with resources for BFR on multiple uplink carriers.
  • a network device may pre-configure a terminal device with resources for BFR on multiple uplink carriers through radio resource control (radio resource control (RRC) signaling).
  • RRC radio resource control
  • the network device may also pre-configure resources for BFR on multiple uplink carriers through other downlink signaling, which is not limited in this application.
  • the configuration information sent to the terminal device includes a resource use priority, and the resource use priority is used to indicate a sequence of resource use on multiple uplink carriers.
  • the resource use priority is: non-competitive random access resources of the NUL carrier> non-competitive random access resources of the SUL carrier> competitive random access resources of the SUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the SUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the SUL carrier of the primary cell> on the uplink carrier of the secondary cell
  • the resource use priority is: non-competitive random access resources on the SUL carrier of the primary cell> non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the uplink carrier of the secondary cell> Contention random access resources on the SUL carrier of the primary cell> Contention random access resources on the NUL carrier of the primary cell> Contention random access resources on the uplink carrier of the secondary cell.
  • the configuration information sent to the terminal device includes configuration information of a beam failure recovery timer on the NUL carrier. If the beam failure recovery timer times out, Non-contention random access resources on the NUL carrier are not available.
  • the configuration information sent to the terminal device includes configuration information of a beam failure recovery timer on a SUL carrier. If the beam failure recovery timer times out, the non-contention random access resources on the SUL carrier are unavailable.
  • the configuration information sent to the terminal device includes a threshold for candidate beam quality, and the threshold is used by the terminal device to measure the quality of the candidate beam, so that the The quality of the beam selects the resources for BFR from multiple uplink carriers.
  • the configuration information sent to the terminal device includes an offset of the candidate beam quality, and the offset is used in the carrier aggregation scenario by the terminal device through Compare the quality of the candidate beam of the primary cell with the sum of the offset and the quality of the candidate beam of the secondary cell, and select the uplink carrier of the primary cell or the resources on the uplink carrier of the secondary cell for BFR.
  • the quality of the candidate beam can be RSRP or RSRQ.
  • the network device sends resource selection information to the terminal device through RRC signaling or other downlink signaling.
  • a communication device configured to execute the foregoing first aspect or the method in any possible implementation manner of the first aspect.
  • the communication apparatus may include a module for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • a communication device configured to execute the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the communication apparatus may include a module for performing the method in the second aspect or any possible implementation of the second aspect.
  • a communication device includes a memory and a processor.
  • the memory is configured to store instructions.
  • the processor is configured to execute instructions stored in the memory. Execution of the instructions stored in the memory causes the processor to execute the first aspect or The method in any possible implementation of the first aspect.
  • a communication device includes a memory and a processor.
  • the memory is configured to store instructions.
  • the processor is configured to execute instructions stored in the memory. Execution of the instructions stored in the memory causes the processor to execute the second aspect or The method in any possible implementation of the second aspect.
  • a chip is provided.
  • the chip includes a processing module and a communication interface.
  • the processing module is used to control the communication interface to communicate with the outside.
  • the processing module is further configured to implement the first aspect or any possible implementation manner of the first aspect. Methods.
  • a chip includes a processing module and a communication interface.
  • the processing module is used to control the communication interface to communicate with the outside.
  • the processing module is further configured to implement the second aspect or any possible implementation manner of the second aspect. Methods.
  • a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a computer, the computer implements the method of the first aspect or any possible implementation manner of the first aspect.
  • a computer-readable storage medium on which a computer program is stored.
  • the computer program When the computer program is executed by a computer, the computer implements the method of the second aspect or any possible implementation manner of the second aspect.
  • a computer program product containing instructions is provided.
  • the instructions When the instructions are executed by a computer, the computer implements the first aspect or the method in any possible implementation manner of the first aspect.
  • a computer program product containing instructions is provided.
  • the instructions When the instructions are executed by a computer, the computer implements the second aspect or the method in any possible implementation manner of the second aspect.
  • FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a beam failure recovery.
  • FIG. 3 is a schematic flowchart of a method for determining an uplink resource according to an embodiment of the present application.
  • FIG. 4 is another schematic flowchart of a method for determining an uplink resource according to an embodiment of the present application.
  • FIG. 5 is another schematic flowchart of a method for determining uplink resources according to an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method for determining a downlink resource according to another embodiment of the present application.
  • FIG. 7 is a schematic diagram of an association relationship between resources on an uplink carrier and resources on a downlink carrier.
  • FIG. 8 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is another schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 10 is another schematic block diagram of a communication device according to an embodiment of the present application.
  • the terminal device in the embodiments of the present application may refer to user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication equipment, user agent or user device.
  • Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and wireless communications Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, or terminal devices in public land mobile networks (PLMN) that are evolving in the future, etc. Examples are not limited to this.
  • the network device in the embodiment of the present application may be a device for communicating with a terminal device, may be any device having a wireless transmitting / receiving function, or a chip that can be set in the device.
  • the network device may be a base station, and the base station may be used to communicate with one or more terminal devices, and may also be used to communicate with one or more base stations with partial terminal device functions (for example, macro base stations and micro base stations).
  • the network device may be a base station in a 5G system, an NR system, an M2M system, or other communication systems that will evolve in the future.
  • the network device may also be an access point (AP), a transport node (TRP), a central unit (CU), or other network entities, and may include some of the functions of the above network entities Or all functions are not limited in the embodiments of the present application.
  • AP access point
  • TRP transport node
  • CU central unit
  • a terminal device can communicate with a network device through uplink carrier 1 and uplink carrier 2.
  • uplink carrier 1 can communicate with a network device through uplink carrier 1 and uplink carrier 2.
  • FIG. 1 is merely an example and not a limitation.
  • a terminal device may have more than two uplink carriers.
  • a cell configured with a supplementary uplink carrier is supported.
  • SUL carrier supplementary uplink carrier
  • the carrier frequency bands that can be used for uplink transmission can be referred to as NR uplink carriers (NR uplink carriers, NUL carriers) (hereinafter may be referred to as NUL carriers).
  • NUL carriers NR uplink carriers
  • the terminal device in the cell edge area can receive the signal from the network device, but the network device may not receive the signal from the terminal device.
  • the NR system introduces a supplementary uplink carrier (supplementary uplink carrier, SUL carrier) (hereinafter referred to as the SUL carrier) to assist terminal equipment in uplink transmission. That is, in a cell that supports SUL carrier configuration, there are two uplink carriers, that is, a NUL carrier and a SUL carrier, which can be used for terminal equipment for uplink transmission.
  • the frequency of the NUL carrier is higher than that of the SUL carrier.
  • the NUL carrier may be a high-frequency carrier, such as the FR1 frequency band or the FR2 frequency band in the 3GPP standard.
  • the SUL carrier may be a low frequency carrier, such as a Long Term Evolution (LTE) frequency band.
  • LTE Long Term Evolution
  • Table 1 shows the frequency bands of the SUL carrier (bands n80 to n86 shown in Table 1)
  • Table 2 shows the frequency bands n257 to n261 of the NUL carrier.
  • a low-frequency carrier may refer to a carrier operating below 6 GHz
  • a high-frequency carrier may refer to a carrier operating at 6 GHz and above.
  • Scenario 2 The scenario of carrier aggregation.
  • the terminal device may use the uplink carrier of the primary cell and the uplink carrier of the secondary cell for uplink transmission.
  • the primary cell can support SUL configuration, that is, the primary cell has NUL carrier and SUL carrier; or the secondary cell can also support SUL configuration, that is, the secondary cell has NUL carrier and SUL carrier. That is, the multiple uplink carriers provided by the terminal device may include the NUL carrier and the SUL carrier of the primary cell, and the uplink carriers of the secondary cell (for example, the NUL carrier and the SUL carrier of the secondary cell).
  • the primary cell can be a primary cell (PCell) or a primary and secondary cell (PSCell).
  • the secondary cell can be referred to as SCell (secondary cell).
  • Multiple uplink carriers are configured with uplink resources used by the terminal device for uplink transmission.
  • BFRQ beam failure request
  • RACH random access channel
  • SR uplink scheduling request
  • uplink resources for transmitting uplink data are configured on multiple uplink carriers.
  • Multiple uplink carriers can also be configured with other uplink resources such as a physical uplink control channel (PUCCH).
  • PUCCH physical uplink control channel
  • This application proposes a scheme for determining a target uplink resource for uplink transmission from resources on multiple uplink carriers in a case where a terminal device has multiple uplink carriers.
  • the solution of this application may be used to determine a target uplink resource for transmitting the uplink scheduling request message from multiple uplink carriers.
  • the solution of this application may be used to determine a target uplink resource for transmitting a beam failure recovery request from multiple uplink carriers.
  • the solution of the present application may be used to determine a target uplink resource for transmitting uplink data from multiple uplink carriers.
  • the target for transmitting uplink data can be determined from multiple uplink carriers Uplink resources.
  • the process of recovering the beam failure includes the following four parts.
  • the terminal device performs beam failure detection based on the beam failure detection reference signal (BFD, RS, BFD, RS), that is, the service beam q0 shown in FIG. 2.
  • BFD beam failure detection reference signal
  • RS beam failure detection reference signal
  • the terminal device selects a candidate beam with a beam quality higher than a threshold from a candidate beam set, and selects one of the selected candidate beams as a newly available beam (can be denoted as q_new).
  • the candidate beam set may be configured by the network device to the terminal device in advance.
  • the terminal device sends the BFRQ message to the network device on the physical random access channel (physical random access channel (PRACH)) resource associated with the newly available beam (q_new).
  • physical random access channel physical random access channel (PRACH)
  • the PRACH resources associated with each candidate beam in the candidate beam set can be configured in advance by the network device to the terminal device.
  • the terminal device uses the newly available beam (q_new) to monitor the dedicated control channel resource set (CORESET) and its corresponding search space (search space) ), In order to obtain the response of the network device to the BFRQ message.
  • the response is a downlink control channel (physical downlink control channel, PDCCH).
  • FIG. 3 is a schematic flowchart of a method for determining an uplink resource according to an embodiment of the present application. This method may be implemented by a terminal device, or may also be implemented by a chip available to the terminal device. The following description uses the terminal device as an example for description. As shown in FIG. 3, the method includes the following steps.
  • S310 The terminal device determines a target uplink resource from resources on multiple uplink carriers.
  • the multiple uplink carriers are configured with resources for beam failure recovery (BFR) of the current cell, that is, resources for sending a beam failure recovery request (BFRQ) message.
  • BFR beam failure recovery
  • the current cell indicates a cell where beam failure has occurred.
  • the target uplink resource is a resource for BFR on one of the multiple uplink carriers.
  • the resources for BFR on multiple uplink carriers may be pre-configured by the network device.
  • a network device may pre-configure a terminal device with resources for BFR on multiple uplink carriers through radio resource control (radio resource control (RRC) signaling).
  • RRC radio resource control
  • the network device may also pre-configure resources for BFR on multiple uplink carriers through other downlink signaling, which is not limited in this application.
  • the uplink resources used for BFR may be random access (random access channel, RACH) resources.
  • the terminal device uses the target uplink resource to send a BFRQ message to the network device.
  • the terminal device uses the uplink beam X on the target uplink resource to send a BFRQ message to the network device.
  • a target uplink resource for sending a beam failure recovery request message is determined, in order to improve the efficiency of beam failure recovery.
  • the multiple uplink carriers may be low-frequency carriers, or they may all be high-frequency carriers, or some of them are high-frequency carriers and the other are low-frequency carriers.
  • the terms "high frequency” and "low frequency” mentioned in this article are relative concepts and have no strict limitation meaning.
  • a low-frequency carrier may refer to a carrier operating below 6 GHz
  • a high-frequency carrier may refer to a carrier operating at 6 GHz and above.
  • high-frequency carriers and low-frequency carriers may have new definitions.
  • the multiple uplink carriers include a primary uplink carrier and a supplementary uplink carrier.
  • the primary uplink carrier may be the uplink carrier mainly used by the current cell, and the supplementary uplink carrier may be used as a supplement to the primary uplink carrier.
  • the supplementary uplink carrier is used when the primary uplink carrier fails to transmit.
  • the main uplink carrier and the supplementary uplink carrier may both be high-frequency carriers or both low-frequency carriers, or the main uplink carrier is a high-frequency carrier and the supplementary uplink carrier is a low-frequency carrier.
  • the main uplink carrier is a high-frequency carrier
  • the supplementary uplink carrier is a low-frequency carrier.
  • main uplink carrier and the supplementary uplink carrier are only for distinguishing and not limiting.
  • multiple different uplink carriers in the same cell can also be distinguished by other names. This application does not limit this.
  • the scenario in which the current cell includes the primary uplink carrier and the supplementary uplink carrier may be the SUL scenario described above, where the NUL carrier corresponds to the primary uplink carrier and the SUL carrier corresponds to the supplementary uplink carrier.
  • the following description uses the main uplink carrier as the NUL carrier and the supplementary downlink carrier as the SUL carrier as an example.
  • the current cell is the primary cell.
  • the multiple uplink carriers may include the uplink carrier of the primary cell and the uplink carrier of the secondary cell. If the primary cell supports the SUL technology, the multiple uplink carriers may include the NUL carrier and the SUL carrier of the primary cell, and the uplink carriers of the secondary cell. If the secondary cell also supports the SUL technology, the multiple uplink carriers may include the NUL carrier and the SUL carrier of the primary cell, and the NUL carrier and the SUL carrier of the secondary cell.
  • Multiple uplink carriers may be configured with non-competitive resources and / or competitive resources.
  • the non-competitive resources used for BFR may be non-competitive random access resources (contention-free RACH resource), and the competitive resources used for BFR may be Contention-based RACH resources.
  • multiple uplink carriers may also be configured with uplink scheduling (RS) resources, PUCCH resources, or other uplink resources.
  • RS uplink scheduling
  • Multiple uplink carriers may also be configured with non-competing resources except for competing random access resources, and / or may be configured with other competing resources in addition to competing access resources.
  • non-competing resources are used as non-competing random access resources
  • competing resources are used as examples for contending random access resources
  • non-contention random access resources on multiple uplink carriers may be preferentially selected as target uplink resources.
  • a resource on a NUL carrier among a plurality of uplink carriers may be preferentially selected as a target uplink resource.
  • a resource on a SUL carrier among a plurality of uplink carriers may be preferentially selected as a target resource.
  • a target uplink carrier is selected from the multiple uplink carriers according to the beam attributes associated with the resources on the multiple uplink carriers, and the target uplink resource is determined from the resources on the target uplink carrier (priority non-competing random access resources).
  • an uplink carrier of a cell is selected from a plurality of uplink carriers, and resources on the uplink carrier of the selected cell (Non-competitive random access resources are preferred).
  • each of the foregoing implementation manners of determining a target uplink resource for sending a BFRQ message from resources on multiple uplink carriers may be used independently or in combination based on inherent logic.
  • a scheme that preferentially selects non-competing random access resources as the target uplink resource is a scheme that preferentially selects non-competing random access resources as the target uplink resource.
  • target uplink resources from multiple uplink carriers it is first to determine whether there are non-competing random access resources available on the multiple uplink carriers. If yes, use the non-competing random access resources on one of the uplink carriers as the target. Uplink resources, if not, select a competitive random access resource on an uplink carrier as the target uplink resource.
  • the non-competitive random access resources on one of the at least one uplink carrier are determined as the target.
  • uplink resources are determined as the target.
  • the uplink carrier Y may be a NUL carrier or a SUL carrier.
  • the uplink carrier Y may be an uplink carrier of the primary cell or an uplink carrier of the secondary cell.
  • the terminal device initiates random access using non-competitive random access resources, and no collision occurs and no conflict resolution is required. Therefore, compared to initiating random access using a contention-based random access resource and initiating random access using a non-contention-based random access resource, the terminal device has a smaller access delay and a higher access success rate. Therefore, the present application can improve the efficiency and success rate of beam failure recovery by preferentially selecting non-competing random access resources from multiple uplink carriers to send a beam failure recovery request message.
  • an uplink carrier may be randomly selected from the at least one uplink carrier, and the non-competitive random access resources on the selected uplink carrier may be selected.
  • a target uplink resource may be randomly selected from the at least one uplink carrier, and the non-competitive random access resources on the selected uplink carrier.
  • a certain uplink carrier may be preferentially selected from the at least one uplink carrier, and non-competitive random access on the selected uplink carrier may be performed.
  • Resources are used as target uplink resources.
  • the multiple uplink carriers include a NUL carrier and a SUL carrier.
  • the non-competitive random access resource on the NUL carrier may be preferentially selected from at least one uplink carrier as the target uplink resource, or the non-competitive random access resource on the SUL carrier may be preferentially selected from the at least one uplink carrier as the target uplink resource.
  • a scheme for preferentially selecting non-competing random resources on a NUL carrier as a target uplink resource is a scheme for preferentially selecting non-competing random resources on a NUL carrier as a target uplink resource.
  • the process of selecting a target uplink resource from multiple uplink carriers first determine whether there is a non-competitive random access resource available on the NUL carrier, and if so, use the non-competitive random access resource on the NUL carrier as the target uplink resource, That is, the non-contention random access resources on the NUL carrier are used to send the BFRQ message.
  • the NUL carrier may work in the high frequency band, a larger subcarrier interval defined by the protocol may be used for transmission, and the corresponding symbol time (absolute time) is shorter. Therefore, compared to the SUL carrier, the The configuration of random access resources can be more dense, which can make the terminal device have more opportunities to use resources in a relatively short time, which can effectively reduce the transmission delay.
  • the non-competitive random access resources on the NUL carrier among the multiple uplink carriers are preferentially selected to send the BFRQ message, which can reduce the BFR delay and thus be effective. Improve the efficiency of BFR.
  • the BFRQ message fails to be sent using the non-competitive random access resource on the NUL carrier, determine whether there is an available non-competitive random access resource on the SUL carrier. There are non-competitive random access resources available on the SUL carrier, and the BFRQ message is sent using the non-competitive random access resources on the SUL carrier; if there are no non-competitive random access resources available on the NUL carrier and the SUL carrier, If the contention random access resources fail to send BFRQ messages, you can consider using contention random access resources on multiple uplink carriers to send BFRQ messages.
  • a beam failure recovery timer (beam failure recovery timer) is configured on the NUL carrier. If the beam failure recovery timer times out, the non-competitive random access resources on the NUL carrier are unavailable.
  • the absence of non-competing random access resources on the NUL carrier mentioned in the above embodiments means that the non-competing random access resources are not configured on the NUL carrier, or that the beam failure recovery timer on the NUL carrier expires.
  • a beam failure recovery timer (beam failure recovery timer) is configured on the SUL carrier. If the beam failure recovery timer times out, the non-contention random access resources on the SUL carrier are unavailable.
  • the non-contention-free random access resources available on the SUL carrier mentioned in the above embodiments refer to that the non-contention-free random access resources are not configured on the SUL carrier or that the beam failure recovery timer on the NUL carrier times out.
  • the beam failure recovery timer of the NUL carrier and the beam failure recovery timer of the SUL carrier can be configured by the network device.
  • the network device may define the beam failure recovery timer of the NUL carrier and the beam failure recovery timer of the SUL carrier by using the following configuration information (// notes later).
  • the following configuration information can be carried in RRC signaling or other downlink signaling.
  • beamFailureRecoveryTimer-CFRA-NUL // Configure a beam failure recovery timer for the NUL carrier.
  • Timer for failure, recovery, timer, NUL Upon, expiration, timer, the UE does not use CFRA, NUL for BFR. // Configure the function of the beam failure recovery timer of the NUL carrier.
  • beamFailureRecoveryTimer-CFRA-SUL // Configure a beam failure recovery timer for the SUL carrier.
  • Timer for failure, recovery, timer, SUL Upon expiration of the timer, the UE does not use CFRA, SUL for BFR. // Configure the function of the beam failure recovery timer of the SUL carrier.
  • the network device may define the usage method of the beam failure recovery timer of the NUL carrier and the usage method of the beam failure recovery timer of the SUL carrier by using the following configuration information (// notes later).
  • the following configuration information can be carried in RRC signaling or other downlink signaling.
  • start beamFailureRecoveryTimer-CFRA-SUL timer // If a non-competing random access resource is configured on the SUL carrier, when the non-competing random access resource on the SUL carrier is used for random access, the beam of the SUL carrier fails to recover. The timer starts counting.
  • the following describes a specific process in which a terminal device preferentially selects a non-competitive random access resource on a NUL carrier as a target uplink resource with reference to FIG. 4. As shown in FIG. 4, it includes the following steps.
  • the current cell has a NUL carrier and a SUL carrier.
  • S402. Determine whether a non-contention random access resource is configured on the NUL carrier. If yes, go to S403, and if no, go to S406.
  • S406. Determine whether a non-competitive random access resource is configured on the SUL carrier. If yes, go to S407, and if no, go to S410.
  • S407. Determine whether the beam failure recovery timer of the SUL carrier has expired. If yes, go to S410, and if no, go to S408.
  • S409 Detect whether sending the BFRQ message using the non-competitive random access resource on the SUL carrier is successful. If yes, go to S414, and if no, go to S410.
  • S410 Determine whether a competitive random access resource is configured on the SUL carrier. If yes, go to S411, and if no, go to S413.
  • step S404 can be directly performed after performing step S402
  • step S408 can be directly performed after performing step S406.
  • the terminal device may select a target uplink resource (that is, an uplink resource for sending BFRQ) from resources on multiple uplink carriers according to a preset resource use priority, and the resource use priority indicates multiple uplink carriers. Priority of use of resources on.
  • the resource use priority is: non-competitive random access resource for NUL carrier> non-competitive random access resource for SUL carrier> competitive random access resource for SUL carrier> competitive random access resource for NUL carrier.
  • the terminal device can According to the operation flow shown in FIG. 4, the target uplink resource is determined from multiple uplink carriers according to the resource use priority.
  • the resource usage priority may be specified by the protocol.
  • the resource usage priority may be pre-configured by the network device.
  • the network device may configure the resource use priority for the terminal device through RRC signaling or other downlink signaling.
  • the NUL carrier may work in the high frequency band, a larger subcarrier interval defined by the protocol may be used for transmission, and the corresponding symbol time (absolute time) is shorter. Therefore, compared to the SUL carrier, the The configuration of random access resources can be more dense, which can make the terminal device have more opportunities to use resources in a relatively short time, which can effectively reduce the transmission delay.
  • the non-competitive random access resources on the NUL carrier among the multiple uplink carriers are preferentially selected to send the BFRQ message, which can reduce the BFR delay and thus be effective. Improve the efficiency of BFR.
  • the total number of non-competing random access resources on the NUL carrier is large, and associated non-competing random access resources can be configured for downlink narrow beams (such as CSI-RS), so that after completing the BFR, the terminal device can There is no need to perform beam scanning and beam training again, so that the terminal device can experience a relatively short data transmission recovery delay. Therefore, preferential selection of non-competitive random access resources on the NUL carrier can reduce the delay of the BFR, thereby improving the efficiency of the BFR.
  • CSI-RS downlink narrow beams
  • a scheme for preferentially selecting non-competing random resources on the SUL carrier as a target uplink resource is a scheme for preferentially selecting non-competing random resources on the SUL carrier as a target uplink resource.
  • a target uplink resource from multiple uplink carriers it is first determined whether there is a non-competitive random access resource available on the SUL carrier, and if so, using the non-competitive random access resource on the SUL carrier as the target uplink resource, That is, a non-contention random access resource on a SUL carrier is used to send a BFRQ message.
  • the BFRQ message is preferentially sent using non-competitive random access resources on the uplink carrier whose frequency band / center frequency is relatively low on multiple uplink carriers.
  • a terminal device is configured with multiple uplink carriers by the network, and one of the uplink carriers operates at 28 GHz, and the other uplink carrier operates at 39 GHz.
  • the terminal device can preferentially select resources operating on the 28 GHz uplink carrier for BFR.
  • the transmission power of the terminal device is limited.
  • the path loss of the low-frequency signal in free space is smaller than that of the high-frequency signal.
  • the SUL carrier works in a lower frequency band, and the SUL carrier has better uplink coverage than the NUL carrier. Therefore, sending BFRQ messages preferentially using non-competing random access resources on the SUL carrier can improve the transmission reliability of BFRQ messages, and thus increase the success probability of BFR.
  • a non-contention random access resource on a SUL carrier may be used to send a BFRQ message first.
  • the scheme for preferentially selecting non-competing random access resources on multiple uplink carriers as the target uplink resource proposed in this application does not absolutely limit the use priority of all non-competing random access resources on multiple uplink carriers. All are higher than all competing random access resources on multiple uplink carriers.
  • the use priority of the non-competing random access resources on the NUL carrier may be lower than the competing random access resources on the SUL carrier.
  • the BFRQ message can be sent preferentially using the contention random access resource on the SUL carrier or the non-contention random access resource on the NUL carrier.
  • a beam failure recovery timer may also be configured on the SUL carrier. If the beam failure recovery timer times out, the Non-competitive random access resources are not available; a beam failure recovery timer may also be configured on the NUL carrier. If the beam failure recovery timer times out, the non-competitive random access resources on the NUL carrier are unavailable.
  • the non-contention-free random access resources available on the SUL carrier mentioned in the above embodiments refer to that the non-contention-free random access resources are not configured on the SUL carrier, or that the beam failure recovery timer on the NUL carrier times out.
  • the absence of non-competing random access resources on the NUL carrier mentioned in the above embodiments means that the non-competing random access resources are not configured on the NUL carrier, or that the beam failure recovery timer on the NUL carrier expires.
  • the following describes a specific process in which a terminal device preferentially selects a non-competitive random access resource on a SUL carrier as a target uplink resource with reference to FIG. 5. As shown in FIG. 5, it includes the following steps.
  • the current cell has a NUL carrier and a SUL carrier.
  • S502. Determine whether a non-contention random access resource is configured on the SUL carrier. If yes, go to S503, and if no, go to S506.
  • S503. Determine whether the beam failure recovery timer of the SUL carrier has expired. If yes, go to S506; if no, go to S504.
  • S505 Detect whether sending the BFRQ message using the non-competitive random access resource on the SUL carrier is successful. If yes, go to S514. If no, go to S506.
  • S506. Determine whether a competitive random access resource is configured on the SUL carrier. If yes, go to S507, and if no, go to S509.
  • S509 Determine whether a non-contention random access resource is configured on the NUL carrier. If yes, go to S510; if no, go to S513.
  • S510 Determine whether the beam failure recovery timer of the NUL carrier has expired. If yes, go to S513, and if no, go to S511.
  • step S503 and S510 are optional, that is, step S504 can be directly performed after performing step S502, and step S511 can be directly performed after performing step S509.
  • the use priority of the contention random access resources on the SUL carrier is higher than the use priority of the non-contention random access resources on the NUL carrier.
  • the use priority of the non-competitive random access resources on the NUL carrier may be higher than the use priority of the competitive random access resources on the SUL carrier.
  • the non-competitive random access resource on the NUL carrier is preferentially used, with the second highest priority. Use the contention random access resources on the SUL carrier.
  • the terminal device may select a target uplink resource (that is, an uplink resource for sending BFRQ) from resources on multiple uplink carriers according to a preset resource use priority, and the resource use priority indicates multiple uplink carriers. Priority of use of resources on.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority is: non-competitive random access resources of the SUL carrier> non-competitive random access resources of the NUL carrier> competitive random access resources of the SUL carrier> competitive random access resources of the NUL carrier.
  • the resource use priority may indicate a use priority order of multiple uplink resources, and may also directly indicate a resource type with the highest priority.
  • the resource usage priority may be specified by the protocol.
  • the resource usage priority may be pre-configured by the network device.
  • the network device may configure the resource use priority for the terminal device through RRC signaling or other downlink signaling.
  • a non-competitive random access resource on a SUL carrier among the multiple uplink carriers is preferentially selected to send a BFRQ message.
  • the transmission power of the terminal device is limited.
  • the path loss of the low-frequency signal in free space is smaller than that of the high-frequency signal.
  • the SUL carrier works in a lower frequency band, and the SUL carrier has better uplink coverage than the NUL carrier. Therefore, sending BFRQ messages preferentially using non-competing random access resources on the SUL carrier can improve the transmission reliability of BFRQ messages, and thus increase the success probability of BFR.
  • the scheme for preferentially selecting non-competing random resources on the NUL carrier as the target uplink resource and the scheme for preferentially selecting non-competing random resources on the SUL carrier as the target uplink resource are described above.
  • the non-competitive random resource on the NUL carrier is preferentially selected as the target uplink resource; when the candidate beam of the current cell is detected, When the quality is lower than the threshold, the non-contention random resource on the SUL carrier is preferentially selected as the target uplink resource.
  • the terminal device can obtain the quality of the candidate beam through measurement.
  • the quality of the candidate beam may be measured at the physical layer, and the candidate beam may correspond to a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ) of the candidate beam. .
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the threshold used to measure the quality of the candidate beam may be prescribed by a protocol, or may be configured by a network device.
  • the network device may configure the threshold through RRC signaling or other downlink signaling.
  • the multiple uplink carriers include the secondary cell in addition to the NUL carrier and the SUL carrier of the primary cell (that is, the current cell).
  • the terminal device determines a target uplink resource for sending a BFRQ message from resources on multiple uplink carriers in the following manner.
  • Method 1 the non-competitive random access resources on multiple uplink carriers are preferentially used, when no non-competitive random access resources are available on multiple uplink carriers, or the non-competitive random access resources on multiple uplink carriers are used
  • the contention random access resource on multiple uplink carriers is used to send the BFRQ message.
  • the priority of resource use is: non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the SUL carrier of the primary cell> non-competitive random access resources on the uplink carrier of the secondary cell> Contention random access resources on the SUL carrier of the primary cell> Contention random access resources on the NUL carrier of the primary cell> Contention random access resources on the uplink carrier of the secondary cell.
  • the priority of resource use is: non-competitive random access resources on the SUL carrier of the primary cell> non-competitive random access resources on the NUL carrier of the primary cell> non-competitive random access resources on the uplink carrier of the secondary cell > Competitive random access resources on the SUL carrier of the primary cell> Competitive random access resources on the NUL carrier of the primary cell> Competitive random access resources on the uplink carrier of the secondary cell.
  • Method 2 the resources on the uplink carrier of the primary cell are preferentially used.
  • the secondary cell is used.
  • the BFRQ message is sent by the resources on the uplink carrier (priority non-contention random access resources).
  • resources on the uplink carrier of the primary cell or resources on the uplink carrier of the secondary cell are selected as target uplink resources according to the quality of the candidate beam of the primary cell and the quality of the candidate beam of the secondary cell.
  • the quality of the candidate beam may be a reference signal receiving power (RSRP) or a reference signal receiving quality (RSRQ).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • the resource on the uplink carrier of the primary cell is selected as the target uplink resource, that is, the primary cell is preferentially used. Resources on the cell's uplink carrier.
  • the resource on the uplink carrier of the primary cell is selected as the target uplink resource, that is, the uplink carrier on the secondary cell is preferentially used. Resources.
  • the preset offset may be pre-configured by the network device.
  • the network device pre-configures the preset offset through RRC signaling or other downlink signaling.
  • the preset offset may also be prescribed by a protocol.
  • the quality of the candidate beam of the primary cell and the quality of the candidate beam of the secondary cell it may be determined through other methods to preferentially use resources on the uplink carrier of the primary cell or resources on the uplink carrier of the secondary cell. This application does not limit this.
  • any of the target uplink resource selection methods provided above may be used to select the uplink of the selected cell.
  • the target uplink carrier is determined on the carrier resources.
  • This application also proposes a scheme for determining a target uplink resource from multiple uplink carriers according to the beam attributes associated with the resources on the uplink carrier.
  • step 310 includes: selecting a target uplink carrier from the multiple uplink carriers according to the beam attributes associated with the resources on the multiple uplink carriers, respectively; and determining the resources on the target uplink carrier as the target uplink. Resources.
  • the multiple uplink carriers include a first carrier and a second carrier, a resource-associated channel state information reference signal (CSI-RS) on the first carrier, and a resource-associated synchronization on the second carrier.
  • CSI-RS channel state information reference signal
  • the first carrier is selected as a target uplink carrier.
  • the resource use priority of any uplink resource associated with the CSI-RS is higher than the resource use priority of the uplink carrier associated with the SSB.
  • the first carrier and the second carrier are only for distinguishing, not limitation.
  • the first carrier represents a carrier in which any one of a plurality of uplink carriers is associated with a CSI-RS
  • the second carrier represents a carrier in which any one of a plurality of uplink carriers is associated with an SSB.
  • the first carrier and the second carrier are a NUL carrier and a SUL carrier of the same cell, respectively.
  • the first carrier and the second carrier are the uplink carrier of the primary cell and the uplink carrier of the secondary cell, respectively.
  • the SSB is generally considered to be a wide beam and the CSI-RS is a narrow beam.
  • multiple CSI-RSs can be considered to be quasi-co-location (QCL) to one SSB. If the terminal equipment fails to recover to a narrow beam, the beamforming gain can be increased, which can support higher data rates.
  • the restored beam can obtain a higher antenna gain (beam-forming gain). To support higher data rates.
  • the scheme of preferentially selecting resources associated with the uplink carrier of the CSI-RS for BFR may be applied to a comparison in which both carriers have non-competing random access resources, or both have competing random access resources. Scenes.
  • a scheme for preferentially selecting a resource associated with an uplink carrier of a CSI-RS for BFR may be applied to various scenarios in which a terminal device has multiple uplink carriers for BFR.
  • the scheme of preferentially selecting resources associated with the uplink carrier of the CSI-RS for BFR may also be applied to some embodiments described above.
  • non-competing random access resources on multiple uplink carriers for BFR if it is detected that both non-competing random access resources are available on both uplink carriers, at this time, if one uplink carrier Resources associated with the CSI-RS on the uplink carrier and resources associated with the SSB on the other uplink carrier, non-competitive random access resources associated with the uplink carrier on the CSI-RS are preferentially selected for BFR.
  • the multiple uplink carriers include a third carrier and a fourth carrier, and the number of candidate beams associated with resources on the third carrier is less than or equal to the number of candidate beams associated with resources on the fourth carrier; Determined as the target uplink carrier.
  • BFR is preferentially performed using an uplink carrier with a smaller number of associated candidate beams.
  • the third carrier and the fourth carrier are only for distinction, not limitation.
  • the third carrier and the fourth carrier represent uplink carriers having different numbers of candidate beams associated with any two resources among the multiple uplink carriers.
  • the terminal device preferentially performs BFR on the third carrier associated with the X candidate beams.
  • the terminal equipment uses random access resources on the third carrier for BFR, the network equipment needs to respond to beam failure recovery in 2 beam directions; if the terminal equipment uses random access resources on the fourth carrier for BFR, the network equipment needs Beam recovery response in 4 protection directions. Therefore, compared to using the resources on the fourth carrier to perform BFR, the terminal device uses the resources on the third carrier to perform BFR, which can indicate a smaller beam failure recovery response beam range for the network device, which can save network device resources
  • the overhead is also conducive to subsequent beam management.
  • BFR is performed by preferentially selecting resources on an uplink carrier with a small number of candidate beams associated with resources in order to save the resource overhead of network equipment and facilitate subsequent beam management.
  • a scheme for preferentially selecting resources on an uplink carrier with a small number of candidate beams associated with resources for BFR may be applied to the two carriers for comparison, both of which have non-competing random access resources, or both have competitive random access.
  • a scheme for preferentially selecting resources on an uplink carrier with a small number of candidate beams associated with resources for BFR may be applied to the two carriers for comparison, both of which have non-competing random access resources, or both have competitive random access.
  • a scheme for preferentially selecting resources on an uplink carrier with a small number of candidate beams associated with resources for BFR may be applied to various scenarios in which a terminal device has multiple uplink carriers for BFR.
  • the scheme of preferentially selecting resources on the uplink carrier with a small number of candidate beams associated with resources for BFR may also be applied to some embodiments described above.
  • non-competing random access resources on multiple uplink carriers for BFR if it is detected that two non-competing random access resources are available on both uplink carriers, at this time, if the two The number of candidate beams associated with resources on the uplink carrier is different, and then non-competitive random access resources on the uplink carrier associated with a smaller number of candidate beams are preferentially selected for BFR.
  • the embodiments of the present application propose multiple implementation methods for selecting a target uplink resource for sending BFRQ messages from resources on multiple uplink carriers.
  • non-contention random access resources on multiple uplink carriers may be preferentially selected as target uplink resources.
  • a resource on a NUL carrier among a plurality of uplink carriers may be preferentially selected as a target uplink resource.
  • a resource on a SUL carrier among a plurality of uplink carriers (non-competitive random access resource first) may be preferentially selected as a target resource.
  • a resource on an uplink carrier whose resources are associated with a CSI-RS among multiple uplink carriers is preferentially selected as a target uplink resource.
  • a resource on an uplink carrier with a smaller number of candidate beams associated with resources among multiple uplink carriers is preferentially selected as a target uplink resource.
  • resources on the uplink carrier of the cell with a higher candidate beam quality are preferentially selected (non-competitive random access resources are preferred) as the target uplink resource.
  • the method of selecting a target uplink resource from multiple uplink carriers for uplink transmission is described above by using a beam failure recovery (BFR) scenario as an example.
  • BFR beam failure recovery
  • this application is not limited to this.
  • the solution for determining uplink resources from multiple uplink carriers provided in this application can also be applied to other uplink transmission scenarios, such as a scenario in which a terminal device reports a scheduling request message to a network device, and for example, a terminal device reports uplink data to a network device. Scenes.
  • BFRQ beam failure recovery request
  • BFR beam failure recovery
  • the non-competitive random access resources in the above embodiments are replaced with uplink scheduling resources.
  • the uplink scheduling resources on the NUL carrier can be preferentially selected to send the uplink scheduling request message, or the SUL carrier can be preferentially selected.
  • the uplink scheduling request message sent on the uplink scheduling resource, or the target uplink carrier may be selected from multiple carriers according to the beam attribute associated with the resource on the uplink carrier, and the uplink scheduling request message is sent using the uplink scheduling resource on the target uplink carrier. .
  • the non-contention random access resources in the above embodiments are replaced with uplink resources.
  • uplink resources on the NUL carrier can be preferentially selected for sending uplink data, or uplink resources on the SUL carrier can be preferentially selected.
  • the uplink carrier on which the target uplink resource sent by the terminal device sends the BFRQ message corresponds to multiple downlink carriers.
  • a terminal device sends a BFRQ message using a non-competitive random access resource on a SUL carrier, and the SUL carrier corresponds to multiple downlink carriers.
  • the terminal device needs to determine the target downlink carrier for receiving the BFR response message sent by the network device from multiple downlink carriers, and the carrier bandwidth part (bandwidth part, BWP) on the target downlink carrier is used to determine the target downlink carrier.
  • the target BWP that receives the BFR response.
  • This application proposes a method for determining downlink resources.
  • the method can also be applied to a scenario in which an uplink carrier of a BFRQ message sent by a terminal device corresponds to multiple downlink carriers. As shown in FIG. 6, the method includes the following steps.
  • the terminal device uses the target uplink resource on the target uplink carrier to send a BFRQ message to the network device.
  • the target uplink resource is a competitive random access resource.
  • the target uplink carrier corresponds to multiple downlink carriers.
  • the terminal device obtains an uplink-downlink carrier association relationship, and the uplink-downlink carrier association relationship includes an association relationship between the target uplink carrier and the target downlink carrier.
  • the association relationship between the target uplink carrier and the target downlink carrier may be prescribed by a protocol, or may be configured by a network device.
  • the terminal device uses the target downlink carrier to receive a beam failure recovery response message (referred to as a BFR response message) sent by the network device.
  • a beam failure recovery response message (referred to as a BFR response message) sent by the network device.
  • the solution provided in this application helps a medium terminal device to effectively determine a downlink resource for monitoring a BFR response message.
  • the terminal device can obtain the uplink-downlink carrier association relationship through multiple implementation manners, that is, the target downlink carrier is obtained.
  • the uplink-downlink carrier association relationship is prescribed by a protocol, or may be referred to as a default.
  • a terminal device sends a BFRQ message using a random access resource on a SUL carrier, and the SUL carrier corresponds to multiple downlink carriers.
  • the terminal device listens to a BFR response message on a downlink carrier in the primary cell.
  • the primary cell is a PCell or PSCell.
  • the SUL carrier has an association relationship with one downlink carrier of the primary cell.
  • a terminal device sends a BFRQ message using a random access resource on a SUL carrier, and the SUL carrier corresponds to multiple downlink carriers.
  • the terminal device listens to a BFR response message on a downlink carrier in a cell where the SUL carrier is located.
  • the SUL carrier has an association relationship with one downlink carrier in the same cell.
  • the uplink-downlink carrier association relationship is pre-configured by the network device.
  • the network device sends configuration information to the terminal device, where the configuration information carries information about the uplink-downlink carrier association relationship.
  • the uplink-downlink carrier association relationship is indicated by the index of the cell where the carrier is located.
  • the ServCellIndex or SCellIndex of an uplink carrier and the ServCellIndex or SCellIndex of a downlink carrier indicate the association between this uplink carrier and this downlink carrier. relationship.
  • the uplink-downlink carrier association relationship refers to an association relationship between an uplink carrier and a downlink carrier determined by a network device when configuring non-competing random access resources.
  • the terminal device determines a target downlink carrier for receiving a BFR response message through an uplink-downlink carrier association relationship.
  • one downlink carrier may include multiple BWPs, for example, include four BWPs.
  • the terminal device After the target downlink carrier is determined, the terminal device also needs to determine a target BWP on the target downlink carrier for receiving a BFR response message.
  • the terminal device may determine the target BWP for receiving the BFR response message on the target downlink carrier through multiple implementation manners.
  • the same BWP with the same index on the target downlink carrier as the index of the BWP sending the BFRQ message is used as the target BWP.
  • a terminal device sends a BFRQ message on a SUL carrier using a random access resource on the BWPx (x is an index of the BWP)
  • the terminal device can monitor the BFR response message on the BWPx of the target downlink carrier.
  • the downlink carrier has only one BWP.
  • the BFR response message can be monitored directly on one BWP of the target downlink carrier.
  • BWP 0 to 3 of the SUL carrier there are random access resources on BWP 0 to 3 of the SUL carrier, and there is only one BWP 0 on the downlink carrier. No matter which BWP of the SUL carrier the terminal device sends the BFRQ message on, the terminal device determines the target downlink carrier and Listen for BFR response messages on BWP 0 of the downlink carrier.
  • a target BWP for receiving a BFR response message on the target downlink carrier is determined.
  • the association relationship between the BWP in the downlink carrier and the BWP in the uplink carrier refers to an ascending association relationship between the index of the BWP in the downlink carrier and the index of the BWP in the uplink carrier.
  • the SUL carrier includes BWP 0 ⁇ 3, among which BWP 0 and BWP 1 have no random access resources, BWP 2 and BWP 3 have random access resources, and the downlink carrier has BWP 0 and BWP 1 .
  • the association between the BWP in the downlink carrier and the BWP in the uplink carrier is that BWP2 of the SUL carrier is associated with BWP0 of the lower carrier, and BWP3 of the SUL carrier is associated with BWP1 of the downlink carrier.
  • the terminal device sends the BFRQ message using the random access resource on the BWP 2 on the SUL carrier obtained in FIG.
  • the terminal device monitors the BFR response message using the BWP 0 on the target downlink carrier.
  • the terminal device sends the BFRQ message using the random access resource on the BWP3 on the SUL carrier obtained in FIG. 7, and the terminal device uses the BWP1 on the target downlink carrier to monitor the BFR response message.
  • the terminal device determines the target BWP for receiving the BFR response message on the target downlink carrier through the configuration information of the network device, and the configuration information includes a BWP indicating the target BWP in the target uplink carrier and the BWP in the target downlink carrier.
  • the configuration information includes a location of a BWP for instructing the terminal device to receive a BFR response message.
  • the target downlink carrier for monitoring the BFR response message and the target BWP for monitoring the BFR response message on the target downlink carrier may be configured by the network device for the terminal device, and may be configured separately. Can also be configured together.
  • the network device sends configuration information to the terminal device.
  • the configuration information carries the uplink-downlink carrier association relationship.
  • the uplink-downlink carrier association relationship includes the association relationship between the target uplink carrier and the target downlink carrier.
  • the configuration information also includes the target uplink Association between the BWP on the carrier and the BWP on the target downlink carrier.
  • the terminal device can determine the downlink carrier for monitoring the BFR response message.
  • the beam failure recovery in this case may be referred to as Cross carrier beam failure recovery.
  • Cross carrier beam failure recovery can be performed according to the following procedure.
  • the network device configures the association relationship between the downlink carrier and the uplink RACH resource.
  • the network device configures the association relationship between the RACH resource on the carrier 1 and the downlink signal (candidate beam) of the carrier 2.
  • Network devices can configure associations through RRC messages.
  • the terminal device searches for a new candidate beam on carrier 2.
  • the physical layer of the terminal device reports the beam that meets the conditions to the MAC layer of the terminal device.
  • the terminal device initiates a BFRQ message using the RACH resource on the carrier 1.
  • the terminal device starts to monitor the response of the network device on carrier 2, that is, a PDCCH in a window on carrier 2, where the cyclic redundancy code (CRC) uses the cell.
  • the wireless network temporary identifier (C-RNTI) performs scrambling.
  • the network device receives the BFRQ message of the terminal device on the carrier 1, and it can be determined that the terminal device has a beam failure on the carrier 2, and the new beam requested by the terminal device can be determined by the previous RACH resource and beam association relationship.
  • this embodiment proposes a beam failure recovery scheme for sending a BFRQ message on a high-frequency carrier (or a low-frequency carrier) and detecting a BFR response message on a low-frequency carrier (or a high-frequency carrier).
  • the above process for recovering the failure of the cross-carrier beam may be applicable to the following two scenarios.
  • Carrier 2 has no associated / or corresponding uplink carrier; or no corresponding uplink transmission resource or PRACH resource.
  • Carrier 1 is a low-frequency uplink carrier. Since the low-frequency uplink coverage is better, the corresponding RACH success rate is higher.
  • the two uplink carriers provided by the terminal device are QCL, for example, carrier 1 and carrier 2 are QCL, and carrier 1 and carrier 2 work in a high-frequency band
  • This situation Beam failure recovery under this condition can also be referred to as cross-carrier beam failure recovery.
  • the cross-carrier beam failure recovery may be performed according to the following procedure.
  • the network device configures the association relationship between the downlink carrier and the uplink RACH resource.
  • the network device configures the association relationship between the RACH resource on the carrier 1 and the downlink signal (candidate beam) of the carrier 2.
  • Network devices can configure associations through RRC messages.
  • the beam failure detection can be performed on either carrier 1 or carrier 2.
  • the calculation of the beam failure instance should include the beam failure detection results on the two carriers.
  • the terminal device can perform candidate beam detection on both carrier 1 and carrier 2.
  • the MAC layer of the terminal device selects the corresponding RACH resource.
  • the terminal device may select the nearest random access resource (RACH Occasion, RO) in time, which can speed up the BFR process.
  • RACH Occasion, RO nearest random access resource
  • the physical layer of the terminal device is based on the configuration of its own MAC layer, and can send RACH msg1 on carrier 1 to perform a beam failure recovery request. After 4 time slots, the terminal equipment starts to receive the BFR response message of the network equipment on the same carrier.
  • the BFR response message of the network device may be a PDCCH, where the CRC is scrambled through the C-RNTI.
  • this embodiment proposes a beam failure recovery scheme for sending a BFRQ message on a high-frequency carrier and detecting a BFR response message on the high-frequency carrier.
  • the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used for the terminal device
  • the methods and operations implemented by the network device can also be implemented by Components (such as chips or circuits) that can be used for network equipment implementation.
  • each network element is, for example, a transmitting device or a receiving device.
  • each network element includes a hardware structure and / or a software module corresponding to each function.
  • this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is performed by hardware or computer software-driven hardware depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module in.
  • the above integrated modules may be implemented in the form of hardware or software functional modules. It should be noted that the division of the modules in the embodiments of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. The following description is based on the division of each functional module by corresponding functions.
  • an embodiment of the present application further provides a communication device 800.
  • the communication device 800 may be a terminal device or a component (such as a chip or a circuit) that can be used for the terminal device.
  • the communication device 800 includes a processing unit 810 and a sending unit 820.
  • the processing unit 810 is configured to perform the processing steps on the terminal device side in the foregoing method embodiment
  • the sending unit 820 is configured to perform the transmission on the terminal device side in the uplink method embodiment. step.
  • processing unit 810 and the sending unit 820 For operations or implementations of the processing unit 810 and the sending unit 820, reference may be made to related descriptions in the method embodiments, and details are not described herein again.
  • the processing unit 810 may be implemented by a processor or a processor-related circuit.
  • the transmitting unit 820 may be implemented by a transmitter or a transmitter-related circuit.
  • the communication device 800 may further include a receiving unit, configured to execute a receiving step on the terminal device side in the foregoing method embodiment.
  • the receiving unit may be implemented by a receiver or a receiver-related circuit.
  • the sending unit 820 and the receiving unit in the communication device 800 may be integrated as a transceiver unit, which is not limited in this embodiment of the present application.
  • An embodiment of the present application further provides a first communication device, and the first communication device may be a terminal device or a chip.
  • the first communication apparatus may be configured to perform an action performed by a terminal device in the foregoing method embodiment.
  • FIG. 9 shows a simplified schematic structural diagram of the terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input / output device.
  • the processor is mainly used for processing communication protocols and communication data, controlling terminal devices, executing software programs, or processing data of software programs.
  • the memory is mainly used for storing software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signals and radio frequency signals and the processing of radio frequency signals.
  • the antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves.
  • Input / output devices such as a touch screen, a display screen, and a keyboard, are mainly used to receive data input by the user and output data to the user. It should be noted that some types of terminal equipment may not have an input / output device.
  • the processor When it is necessary to send data, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to a radio frequency circuit. After the radio frequency circuit processes the baseband signal, the radio frequency signal is sent out through an antenna as an electromagnetic wave.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor.
  • the processor converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9. In an actual terminal equipment product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or a storage device.
  • the memory may be set independently of the processor or integrated with the processor, which is not limited in the embodiment of the present application.
  • an antenna and a radio frequency circuit having a transmitting and receiving function may be regarded as a transmitting and receiving unit of a terminal device, and a processor having a processing function may be regarded as a processing unit of the terminal device.
  • the terminal device includes a transceiver unit 901 and a processing unit 902.
  • the transceiver unit 902 may also be referred to as a transceiver, a transceiver, a transceiver device, and the like.
  • the processing unit 901 may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the memory may be located in the processing unit 901, and may be independent of the processing unit 901 (for example, in FIG. 9, the memory is independent of the processing unit 901).
  • the device for implementing the receiving function in the transceiver unit 901 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 901 may be regarded as a transmitting unit, that is, the transceiver unit 901 includes a receiving unit and a transmitting unit.
  • the transceiver unit may also be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may also be called a transmitter, a transmitter, or a transmitting circuit.
  • the processing unit 902 is configured to execute step S310 in FIG. 3, and / or the processing unit 902 is further configured to execute other processing steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 901 is configured to execute step S320 in FIG. 3, and / or the transceiver unit 901 is further configured to perform other transceiver steps on the terminal device side in the embodiment of the present application.
  • the transceiver unit 901 is configured to perform the sending operation on the terminal device side in step S404, step S408, or step S411, or step S413 in FIG. 4, and the transceiver unit 901 is configured to execute the figure In step S414 in step 4, the receiving operation is performed on the terminal device side, and / or the transceiver unit 901 is further configured to perform other transmitting and receiving steps on the terminal device side in the embodiment of the present application.
  • the processing unit 902 is configured to perform a processing operation on the terminal device side in FIG. 4, for example, other processing steps such as steps S401 and S402.
  • the transceiver unit 901 is configured to execute the sending steps on the terminal device side in step S504, or S507, or S511, or S513 in FIG. 5, and the transceiver unit 901 is further configured to execute The receiving step on the terminal device side in step S514, and / or the transceiver unit 901 is further configured to perform other receiving and transmitting steps on the terminal device side in the embodiment of the present application.
  • the processing unit 902 is configured to execute other processing steps on the terminal device side in FIG. 5.
  • the transceiver unit 901 is configured to execute the sending step on the terminal device side in step S610 in FIG. 6, and the transceiver unit 901 is further configured to perform the receive on the terminal device side in step S630 in FIG. Step, and / or the transceiver unit 901 is further configured to perform other transceiver steps on the terminal device side in the embodiments of the present application.
  • the processing unit 902 is configured to execute the processing steps of step S620 in FIG. 6 and / or other processing steps on the terminal device side of the processing unit 902.
  • the above-mentioned terminal device including the transceiver unit and the processing unit may not depend on the structure shown in FIG. 9.
  • the chip When the first communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input / output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
  • FIG. 9 is merely an example and not a limitation.
  • An embodiment of the present application further provides a communication apparatus, which may be a network device or a chip.
  • the communication device includes a processing unit and a transmitting and receiving unit.
  • the processing unit is configured to execute the processing steps on the network device side in the foregoing method embodiment, for example, generate configuration information on the terminal device side, and the like.
  • the transceiver unit is configured to perform the receiving and sending steps on the network device side in the foregoing method embodiment, such as receiving a BFRQ message sent by a terminal device, sending a BFR response message to the terminal device, or sending configuration information of uplink resources to the terminal device.
  • the processing unit may be implemented by a processor or a processor-related circuit.
  • the transceiver unit may be implemented by a transceiver or a transceiver-related circuit.
  • An embodiment of the present application further provides a second communication device, and the second communication device may be a network device or a chip.
  • the second communication apparatus may be configured to perform an action performed by a network device in the foregoing method embodiment.
  • FIG. 10 shows a simplified structure diagram of a base station.
  • the base station includes a 1001 part and a 1002 part.
  • Part 1001 is mainly used for receiving and transmitting of radio frequency signals and conversion of radio frequency signals and baseband signals.
  • Part 1002 is mainly used for baseband processing and controlling base stations.
  • the 1001 part may be generally called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver.
  • the part 1002 is usually a control center of the base station, which may be generally called a processing unit, and is used to control the base station to perform the action of the network device generating the first message in the foregoing method embodiment.
  • a control center of the base station which may be generally called a processing unit, and is used to control the base station to perform the action of the network device generating the first message in the foregoing method embodiment.
  • the memory may be integrated in the processing unit, that is, integrated in the 1002 part shown in FIG. 10 (as shown in FIG. 10); or the memory may be independent of the processing unit, that is, independent of Outside the portion 1002 shown in FIG. 10.
  • the transceiver unit in part 1001 can also be called a transceiver, or a transceiver, etc. It includes an antenna and a radio frequency unit, and the radio frequency unit is mainly used for radio frequency processing.
  • the device used to implement the receiving function in part 1001 can be regarded as the receiving unit and the device used to implement the transmitting function can be regarded as the transmitting unit, that is, the part 1001 includes the receiving unit and the transmitting unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit, and the sending unit may be called a transmitter, a transmitter, or a transmitting circuit.
  • the 1002 part may include one or more single boards, and each single board may include one or more processors and one or more memories.
  • the processors are used to read and execute programs in the memory to implement baseband processing functions and to perform base station processing. control. If there are multiple boards, the boards can be interconnected to increase processing capacity. As an optional implementation manner, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may share one or more processes at the same time. Device.
  • the transceiver unit is configured to perform the receiving operation on the network device side in step 320 in FIG. 3, and / or the transceiver unit is further configured to perform other transceiver steps on the network device side in the embodiment of the present application.
  • the processing unit is configured to execute other processing steps on the network device side in the embodiments of the present application.
  • the transceiver unit is configured to perform the receiving operation on the network device side in step S404, step S408, or step S411, or step S413 in FIG. 4, and the transceiver unit is further configured to execute FIG. 4 The sending operation on the network device side in step S414, and / or other steps in this application.
  • the processing unit is configured to execute a processing step on the network device side in the embodiment of the present application, for example, to generate configuration information of a terminal device.
  • the transceiver unit is configured to perform a receiving operation on the network device side in S504, S507, or S511, or S513 in FIG. 5, and the transceiver unit is further configured to execute step S514 in FIG.
  • the processing unit is configured to execute a processing step on the network device side in the embodiment of the present application, for example, to generate configuration information of a terminal device.
  • the transceiver unit is configured to perform a receiving operation on the network device side in S610 in FIG. 6, and the transceiver unit is further configured to perform a sending operation on the network device side in step S630 in FIG. 6, and / Or other steps in this application.
  • the processing unit is configured to execute a processing step on the network device side in the embodiment of the present application, for example, to generate configuration information of a terminal device.
  • the above network device including the transceiver unit and the processing unit may not depend on the structure shown in FIG. 10.
  • the chip When the second communication device is a chip, the chip includes a transceiver unit and a processing unit.
  • the transceiver unit may be an input / output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip.
  • the terminal device or the network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system.
  • This application layer contains applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided by the embodiment of the present application, as long as the program that records the code of the method provided by the embodiment of the application can be run to provide the program according to the embodiment of the application.
  • the communication may be performed by using the method described above.
  • the method execution subject provided in the embodiments of the present application may be a terminal device or a network device, or a function module in the terminal device or the network device that can call a program and execute the program.
  • various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and / or engineering techniques.
  • article of manufacture encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (eg, hard disks, floppy disks, or magnetic tapes, etc.), optical disks (eg, compact discs (CDs), digital versatile discs (DVDs) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and / or other machine-readable media used to store information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instruction (s) and / or data.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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Abstract

本申请提供一种确定上行资源的方法与装置，该方法包括：从多个上行载波上的资源中确定目标上行资源；使用目标上行资源，向网络设备发送波束失败恢复请求消息。可以使终端设备在具有多个上行载波的情况下，从多个上行载波上确定用于波束失败恢复的资源，以期望提高波束失败恢复的效率。

Description

确定上行资源的方法与装置
本申请要求于2018年08月22日提交中国专利局、申请号为201810960888.1、申请名称为“确定上行资源的方法与装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并具体地，涉及一种确定上行资源的方法与装置。。
背景技术
通常，一个小区由一个下行载波和一个上行载波组成。终端设备进行上行传输时，在一个上行载波上的资源中选择进行上行传输的资源。
有些场景下，终端设备具有多个上行载波用于上行传输。例如，在部署高频小区时，由于运行频段较高，且终端设备的发射功率较低，处于小区边缘区域的终端设备可以接收到网络设备的信号，但是网络设备无法接收到终端设备的信号。针对该问题，新空口(new radio，NR)系统引入补充上行(supplementary uplink，SUL)载波用于辅助终端设备进行上行传输。即在支持SUL载波的小区中，终端设备可以拥有两段频谱进行上行传输，一段频谱可以称为NR上行(NR uplink，NUL)载波，另一段频谱可以称为SUL载波。
目前，尚无在终端设备具有多个上行载波的情况下确定用于上行传输的资源的方案。例如，尚无在终端设备具有多个上行载波的情况下确定用于波束失败恢复(beam failure recovery，BFR)的资源的方案。
发明内容
本申请提供一种确定上行资源的方法与装置，可以使终端设备在具有多个上行载波的情况下，从多个上行载波上确定用于上行传输的资源，例如，确定用于BFR的，以提高BFR的效率。
第一方面，提供一种确定上行资源的方法，该方法由终端设备或用于终端设备的芯片执行。该方法包括：从多个上行载波上的资源中确定目标上行资源；使用目标上行资源，向网络设备发送波束失败恢复请求(beam failure recovery request,BFRQ)消息。
多个上行载波上配置有用于当前小区的波束失败恢复(BFR)的资源，即用于发送BFRQ消息的资源。当前小区表示发生波束失败的小区。用于BFR的上行资源可以为随机接入(random access channel，RACH)资源。
目标上行资源为多个上行载波中的一个上行载波上的用于BFR的资源。
本申请，在具有多个上行载波用于波束失败恢复的情况下，确定用于发送波束失败恢复请求消息的目标上行资源，以期望提高波束失败恢复的效率。
可选地，多个上行载波上的用于BFR的资源可以由网络设备预先配置。例如，网络 设备可以通过无线资源控制(radio resource control，RRC)信令，为终端设备预配置多个上行载波上的用于BFR的资源。网络设备还可以通过其它下行信令预配置多个上行载波上的用于BFR的资源，本申请对此不作限定。
可选地，多个上行载波均可以为低频载波，或均可以为高频载波，或其中一部分为高频载波，另一部分为低频载波。本文中提及的“高频”与“低频”是相对的概念，并无严格限制含义。例如，低频载波可以指工作在6GHz以下的载波，高频载波可以指工作在6GHz及以上的载波。再例如，在将来演进的技术中，高频载波与低频载波可能会有新的定义。
在当前小区包括主上行载波与补充上行载波的场景中，多个上行载波包括主上行载波与补充上行载波。例如，在小区支持SUL技术的场景中，主上行载波为NUL载波，补充上行载波为SUL载波。
在载波聚合的场景中，当前小区为主小区，在允许通过辅小区的上行载波用于主小区的BFR的情况下，多个上行载波可以包括主小区的上行载波与辅小区的上行载波。如果主小区支持SUL技术，多个上行载波可以包括主小区的NUL载波与SUL载波，以及辅小区的上行载波。如果辅小区也支持SUL技术，多个上行载波可以包括主小区的NUL载波与SUL载波，以及辅小区的NUL载波与SUL载波。
多个上行载波上可以配置有非竞争资源和/或竞争资源，其中，用于BFR的非竞争资源可以为非竞争随机接入资源(contention-free RACH resource)，用于BFR的竞争资源可以为竞争随机接入资源(contention-based RACH resource)。
可选地，多个上行载波上还可以配置用于发送上行调度请求(scheduling request，SR)的资源、预配置的半静态或免授权上行资源、物理上行控制信道(physical uplink control channel，PUCCH)资源或其它上行资源。多个上行载波上还可以配置有除非竞争随机接入资源之外的其它非竞争资源，和/或还可以配置有除竞争接入资源之外的其它竞争资源。
在本申请中，从多个上行载波上的资源中确定目标上行资源，可以有多种实现方式。
结合第一方面，在第一方面的一种可能的实现方式中，从多个上行载波上的资源中确定目标上行资源，包括：当多个上行载波中至少一个上行载波上具有非竞争资源时，将至少一个上行载波中一个上行载波Y上的非竞争资源确定为目标上行资源。
在当前小区支持SUL技术的场景中，上行载波Y可以是NUL载波，也可以是SUL载波。
在载波聚合场景中，上行载波Y可以是主小区的一个上行载波，也可以是辅小区的一个上行载波。
在本实现方式中，优先选择非竞争随机接入资源作为目标上行资源。在从多个上行载波上选择目标上行资源的过程中，优先判断多个上行载波上是否有可用的非竞争随机接入资源，若是，将其中一个上行载波上的非竞争随机接入资源作为目标上行资源，若否，选择一个上行载波上的竞争随机接入资源作为目标上行资源。
应理解，终端设备使用非竞争随机接入资源发起随机接入，不会发生冲突(collision)，也不需要冲突解决。因此，相对于使用竞争随机接入资源发起随机接入，使用非竞争随机接入资源发起随机接入，终端设备拥有更小的接入时延以及更高的接入成功率。因此，本申请通过从多个上行载波中优先选择非竞争随机接入资源发送波束失败恢复请求消息，可以提高波束失败恢复的效率与成功率。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括当前小区的 主上行载波与补充上行载波；将至少一个上行载波中一个上行载波上的非竞争资源确定为目标上行资源，包括：当至少一个上行载波中包括主上行载波时，将主上行载波上的非竞争资源确定为目标上行资源。
在本实现方式中，优先选择主上行载波上的非竞争随机资源作为目标上行资源。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括NUL载波与SUL载波；从多个上行载波中确定目标上行资源，包括：优先选择NUL载波上的非竞争随机接入资源作为目标上行资源。
在从多个上行载波中选择目标上行资源的过程中，可以优先判断NUL载波上是否有可用的非竞争随机接入资源，若有，将NUL载波上的非竞争随机接入资源作为目标上行资源，若否，使用NUL载波上的竞争随机接入资源或SUL载波上的随机接入资源作为目标上行资源。
进一步地，如果NUL载波上没有可用的非竞争随机接入资源，优先判断SUL载波上是否具有非竞争随机接入资源，若有，将SUL载波上的非竞争随机接入资源作为目标上行资源，若否，使用SUL载波上的竞争随机接入资源或NUL载波上的竞争随机接入资源作为目标上行资源。
应理解，由于NUL载波可能工作在高频频段，可以使用协议定义的更大的子载波间隔传输，相应的每个符号时间(绝对时间)更短，所以相比于SUL载波，NUL载波上的随机接入资源的配置可以更加密集，可以使得终端设备在相对较短的时间内使用资源的机会较多，因此，优先选择NUL载波上的非竞争随机接入资源，可以减少传输时延。
因此，在本申请中，在终端设备具有多个上行载波的情况下，优先选择多个上行载波中NUL载波上的非竞争随机接入资源发送BFRQ消息，可以减少BFR的时延，从而可以有效提高BFR的效率。
此外，NUL载波上的非竞争随机接入资源总数较多，可以为下行的窄波束(例如CSI-RS)配置相关联的非竞争随机接入资源，这样使得，终端设备在完成BFR后，可以不用再重新进行波束扫描和波束训练，从而使得终端设备可以经历相对更短的数据传输恢复时延。因此，优先选择NUL载波上的非竞争随机接入资源，可以减少BFR的时延，从而可以提高BFR的效率。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括当前小区的主上行载波与补充上行载波；将至少一个上行载波中一个上行载波上的非竞争资源确定为目标上行资源，包括：当至少一个上行载波中包括补充上行载波时，将补充上行载波上的非竞争资源确定为目标上行资源。
在本实现方式中，优先选择补充上行载波上的非竞争随机资源作为目标上行资源。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括NUL载波与SUL载波；从多个上行载波中确定目标上行资源，包括：优先选择SUL载波上的非竞争随机接入资源作为目标上行资源。
在从多个上行载波中选择目标上行资源的过程中，可以优先判断SUL载波上是否有可用的非竞争随机接入资源，若有，将SUL载波上的非竞争随机接入资源作为目标上行资源，若否，使用SUL载波上的竞争随机接入资源或NUL载波上的随机接入资源作为目标上行资源。
作为一种实现方式，如果SUL载波上没有可用的非竞争随机接入资源，优先判断SUL 载波上是否具有竞争随机接入资源，若有，将SUL载波上的竞争随机接入资源作为目标上行资源，若否，使用NUL载波上的竞争随机接入资源(非竞争随机接入资源优先)作为目标上行资源。
作为另一种实现方式，如果SUL载波上没有可用的非竞争随机接入资源，优先判断NUL载波上是否具有非竞争随机接入资源，若有，将NUL载波上的非竞争随机接入资源作为目标上行资源，若否，使用SUL载波上的竞争随机接入资源或NUL载波上的竞争随机接入资源作为目标上行资源。
换句话说，优先使用多个上行载波中频段/中心频点相对较低的上行载波上的非竞争随机接入资源发送BFRQ消息。
应理解，终端设备发送功率有限，在终端设备使用相同功率发送信号时，低频信号在自由空间中的路径损耗比高频信号小。相对于NUL载波，SUL载波工作在较低频段，SUL载波相比于NUL载波具有更好的上行覆盖。因此，优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息，可以提高BFRQ消息的传输可靠性，从而可以提高BFR的成功概率。例如，在高频系统波束失败场景中，可以优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息。
需要说明的是，本申请提出的优先选择多个上行载波上的非竞争随机接入资源作为目标上行资源的方案，并非绝对限制多个上行载波上的所有非竞争随机接入资源的使用优先级均高于多个上行载波上的所有竞争随机接入资源。例如，在优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案中，NUL载波上的非竞争随机接入资源的使用优先级可以低于SUL载波上的竞争随机接入资源。
因此，在本申请中，在终端设备具有多个上行载波的情况下，优先选择多个上行载波中SUL载波上的非竞争随机接入资源发送BFRQ消息。应理解，终端设备发送功率有限，在终端设备使用相同功率发送信号时，低频信号在自由空间中的路径损耗比高频信号小。相对于NUL载波，SUL载波工作在较低频段，SUL载波相比于NUL载波具有更好的上行覆盖。因此，优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息，可以提高BFRQ消息的传输可靠性，从而可以提高BFR的成功概率
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波中包括NUL载波与SUL载波；从多个上行载波中选择目标上行资源，包括：在检测到当前小区的候选波束的质量超过门限的情况下，优先选择NUL载波上的非竞争随机资源作为目标上行资源；在检测到当前小区的候选波束的质量低于门限的情况下，优先选择SUL载波上的非竞争随机资源作为目标上行资源。
终端设备通过测量可以获取候选波束的质量。
候选波束的质量可以是该候选波束的参考信号接收功率(reference signal receiving power，RSRP)或参考信号接收质量(reference signal receiving quality，RSRQ)。
用于衡量候选波束的质量的门限可以是协议规定的。或者，用于衡量候选波束的质量的门限可以是网络设备配置的。例如，网络设备可以通过RRC信令或其它下行信令配置该门限。
结合第一方面，在第一方面的一种可能的实现方式中，从多个上行载波上的资源中确定目标上行资源，包括：当多个上行载波上无可用的非竞争资源时，将多个上行载波中的一个上行载波上的竞争资源确定为目标上行资源。
可选地，在本实现方式中，将多个上行载波中的一个上行载波上的竞争资源确定为目标上行资源，包括：将补充上行载波上的竞争资源确定为目标上行资源。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括当前主小区的主上行载波与补充上行载波，以及辅小区的上行载波；从多个上行载波上的资源中确定目标上行资源，包括：当主小区的主上行载波上无可用的非竞争资源时，将辅小区的上行载波上的非竞争资源确定为目标上行资源；或当主小区的主上行载波与补充上行载波均无可用的资源时，将辅小区的上行载波上的资源确定为目标上行资源。
作为一种实现方式，在从多个上行载波中选择目标上行资源的过程中，优先判断主小区的NUL载波上是否有可用的非竞争随机接入资源，若是，将NUL载波上的非竞争随机接入资源作为目标上行资源，若否，判断辅小区的上行载波上是否具有可用的非竞争随机接入资源；如果辅小区的上行载波上具有可用的非竞争随机接入资源，选择辅小区的上行载波上的非竞争随机接入资源作为目标上行资源，否则，判断主小区的SUL载波上是否具有可用的非竞争随机接入资源，若是，使用主小区的SUL载波上的非竞争随机接入资源作为目标上行资源；如果主小区与辅小区的上行载波上均没有可用的非竞争随机接入资源，使用主小区或辅小区的一个上行载波上的竞争随机接入资源作为目标上行资源。
作为一种实现方式，在从多个上行载波中选择目标上行资源的过程中，优先判断主小区的NUL载波上是否有可用的非竞争随机接入资源，若是，将NUL载波上的非竞争随机接入资源作为目标上行资源，若否，判断主小区的SUL载波上是否具有可用的非竞争随机接入资源；如果主小区的SUL载波上具有可用的非竞争随机接入资源，将其作为目标上行资源，否则，判断辅小区的上行载波上是否具有可用的非竞争随机接入资源；如果辅小区的上行载波上具有可用的非竞争随机接入资源，将其作为目标上行资源；如果主小区与辅小区的上行载波上均没有可用的非竞争随机接入资源，使用主小区或辅小区的一个上行载波上的竞争随机接入资源作为目标上行资源。
结合第一方面，在第一方面的一种可能的实现方式中，从多个上行载波上确定目标上行资源，包括：根据预设优先级信息，从多个上行载波中选择目标上行载波，预设优先级信息用于指示多个上行载波上的资源使用先后顺序；在目标上行载波上确定目标上行资源。
例如，该资源使用优先级为：NUL载波的非竞争随机接入资源＞SUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源。
再例如，该资源使用优先级为：SUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的非竞争随机接入资源＞NUL载波的竞争随机接入资源。或者，该资源使用优先级为：SUL载波的非竞争随机接入资源＞NUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源。
再例如，在载波聚合场景中，资源使用优先级为：主小区的NUL载波上的非竞争随机接入资源>主小区的SUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。或者，资源使用优先级为：主小区的SUL载波上的非竞争随机接入资源>主小区的NUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。
可选地，该资源使用优先级可以指示多个上行资源的使用优先级顺序，还可以直接指示优先级最高的资源类型。
可选地，该资源使用优先级可以是协议规定的。
可选地，该资源使用优先级可以是网络设备预配置的。例如，网络设备可以通过RRC信令或其它下行信令为终端设备配置该资源使用优先级。
例如，在存在多种上行资源的时候，网络设备可以配置资源的使用优先级顺序，或者可以直接指示优先级最高的资源类型。
结合第一方面，在第一方面的一种可能的实现方式中，在载波聚合场景下，根据主小区的候选波束的质量与辅小区的候选波束的质量，选择主小区的上行载波上的资源或辅小区的上行载波上的资源作为目标上行资源。
在本实现方式中，通过比较主小区的候选波束的质量与辅小区的候选波束的质量，确定优先使用主小区的上行载波上的资源或优先使用辅小区的上行载波上的资源。
候选波束的质量可以为RSRP或RSRQ。
可选地，在本实现方式中，当主小区的候选波束的质量与预设偏移量之和，大于或等于辅小区的候选波束的质量时，选择主小区的上行载波上的资源作为目标上行资源，即优先使用主小区的上行载波上的资源。当主小区的候选波束的质量与预设偏移量之和，小于辅小区的候选波束的质量时，选择主小区的上行载波上的资源作为目标上行资源，即优先使用辅小区的上行载波上的资源。
该预设偏移量可以是网络设备预配置的，例如，网络设备通过RRC信令或其它下行信令预配置该预设偏移量。
该预设偏移量还可以是协议规定的。
应理解，从多个上行载波中优先选择候选波束的质量较高的小区中的上行载波的资源作为用于BFR的目标上行资源，有助于提高BFR的效率。
结合第一方面，在第一方面的一种可能的实现方式中，从多个上行载波上的资源中确定目标上行资源，包括：分别根据多个上行载波上的资源关联的波束属性，从多个上行载波中选择目标上行载波；将目标上行载波上的资源确定为目标上行资源。
可选地，本实现方式应用于多个上行载波中的每个上行载波均只具有竞争资源，或均只具有非竞争资源的场景。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括第一载波与第二载波，第一载波上的资源关联信道状态信息参考信号CSI-RS，第二载波上的资源关联同步信号块SSB。分别根据多个上行载波上的资源关联的波束属性，从多个上行载波中选择目标上行载，包括：将第一载波确定为目标上行载波。
应理解，通常认为SSB是一个宽波束，CSI-RS是窄波束，例如多个CSI-RS可以认为是准同位(quasi-co-location，QCL)到一个SSB的。如果终端设备波束失败恢复到一个窄波束，可以增大波束赋型增益，从而可以支持更高的数据速率。
因此，本申请实施例在多个上行载波中，通过优先选择资源关联到CSI-RS的上行载波上的资源进行BFR，可以使得恢复到的波束获得更高的天线增益(波束赋型增益)，从而可以支持更高的数据速率。
结合第一方面，在第一方面的一种可能的实现方式中，多个上行载波包括第三载波与第四载波，第三载波上的资源关联的候选波束的数量小于或等于第四载波上的资源所关联 的候选波束的数量；分别根据多个上行载波上的资源关联的波束属性，从多个上行载波中选择目标上行载，包括：将第三载波确定为目标上行载波。
应理解，通过优先选择资源关联的候选波束的数量较少的上行载波上的资源进行BFR，可以为节约网络设备的资源开销，也有利于后续的波束管理。
结合第一方面，在第一方面的一种可能的实现方式中，NUL载波上配置有波束失败恢复定时器(beam failure recovery timer)。如果该波束失败恢复定时器如果超时，NUL载波上的非竞争随机接入资源不可用。
结合第一方面，在第一方面的一种可能的实现方式中，SUL载波上配置有波束失败恢复定时器(beam failure recovery timer)。如果该波束失败恢复定时器如果超时，则SUL载波上的非竞争随机接入资源不可用。
NUL载波的波束失败恢复定时器与SUL载波的波束失败恢复定时器可以由网络设备配置。例如，网络设备通过RRC信令或其它信令配置NUL载波上的波束失败恢复定时器以及SUL载波上的波束失败恢复定时器。
结合第一方面，在第一方面的一种可能的实现方式中，目标上行资源为竞争资源；该方法还包括：从网络设备接收上行载波与下行载波的关联关系；使用目标上行资源所在的上行载波所关联的下行载波，接收网络设备发送的波束恢复响应消息。
将第一方面提供的方法中的波束失败恢复请求(BFRQ)消息替换为上行调度请求消息，将波束失败恢复(BFR)替换为上行调度，这样的方案可以应用于在多个上行载波中选择用于上行调度的资源。
将第一方面提供的方法中的波束失败恢复请求(BFRQ)消息替换为上行数据，将波束失败恢复(BFR)替换为上行数据传输，这样的方案可以应用于在多个上行载波中选择用于上行数据传输的资源。
第二方面，提供一种确定上行资源的方法，该方法例如由网络设备或用于网络设备的芯片执行。该方法包：向终端设备发送配置信息，该配置信息中包括用于指示终端设备从多个上行载波上选择用于BFR的目标上行资源的信息；接收终端设备利用目标上行资源发送的BFRQ消息。
本申请在具有多个上行载波用于波束失败恢复的情况下，确定用于发送波束失败恢复请求消息的目标上行资源，以期望提高波束失败恢复的效率。
多个上行载波上配置有用于当前小区的波束失败恢复(BFR)的资源，即用于发送波束失败恢复请求(BFRQ)消息的资源。
结合第二方面，在第二方面的一种可能的实现方式中，该方法还包括：网络设备为终端设备配置多个上行载波上的用于BFR的资源。
例如，网络设备可以通过无线资源控制(radio resource control，RRC)信令，为终端设备预配置多个上行载波上的用于BFR的资源。网络设备还可以通过其它下行信令预配置多个上行载波上的用于BFR的资源，本申请对此不作限定。
结合第二方面，在第二方面的一种可能的实现方式中，向终端设备发送的配置信息中包括资源使用优先级，资源使用优先级用于指示多个上行载波上资源使用的先后顺序。
例如，该资源使用优先级为：NUL载波的非竞争随机接入资源＞SUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源。
再例如，该资源使用优先级为：SUL载波的非竞争随机接入资源＞SUL载波的竞争 随机接入资源＞NUL载波的非竞争随机接入资源＞NUL载波的竞争随机接入资源。或者，该资源使用优先级为：SUL载波的非竞争随机接入资源＞NUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源。
再例如，在载波聚合场景中，资源使用优先级为：主小区的NUL载波上的非竞争随机接入资源>主小区的SUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。或者，资源使用优先级为：主小区的SUL载波上的非竞争随机接入资源>主小区的NUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。
结合第二方面，在第二方面的一种可能的实现方式中，向终端设备发送的配置信息中包括NUL载波上的波束失败恢复定时器的配置信息，如果该波束失败恢复定时器如果超时，NUL载波上的非竞争随机接入资源不可用。
结合第二方面，在第二方面的一种可能的实现方式中，向终端设备发送的配置信息中包括SUL载波上的波束失败恢复定时器的配置信息。如果该波束失败恢复定时器如果超时，则SUL载波上的非竞争随机接入资源不可用。
结合第二方面，在第二方面的一种可能的实现方式中，向终端设备发送的配置信息中包括候选波束质量的门限，该门限用于终端设备衡量候选波束的质量，从而，可以基于候选波束的质量，从多个上行载波中选择用于BFR的资源。
结合第二方面，在第二方面的一种可能的实现方式中，向终端设备发送的配置信息中包括候选波束质量的偏移量，该偏移量用于终端设备在载波聚合场景中，通过比较主小区的候选波束的质量与该偏移量之和，与辅小区的候选波束的质量，选择主小区的上行载波或辅小区的上行载波上的资源用于BFR。
候选波束的质量可以是RSRP或RSRQ。
结合第二方面，在第二方面的一种可能的实现方式中，网络设备通过RRC信令或其它下行信令向终端设备发送资源选择信息。
第三方面，提供一种通信装置，通信装置用于执行上述第一方面或第一方面的任一可能的实现方式中的方法。可选地，通信装置可以包括用于执行第一方面或第一方面的任一可能的实现方式中的方法的模块。
第四方面，提供一种通信装置，通信装置用于执行上述第二方面或第二方面的任一可能的实现方式中的方法。可选地，通信装置可以包括用于执行第二方面或第二方面的任一可能的实现方式中的方法的模块。
第五方面，提供一种通信装置，通信装置包括存储器和处理器，存储器用于存储指令，处理器用于执行存储器存储的指令，并且对存储器中存储的指令的执行使得处理器执行第一方面或第一方面的任一可能的实现方式中的方法。
第六方面，提供一种通信装置，通信装置包括存储器和处理器，存储器用于存储指令，处理器用于执行存储器存储的指令，并且对存储器中存储的指令的执行使得处理器执行第二方面或第二方面的任一可能的实现方式中的方法。
第七方面，提供一种芯片，芯片包括处理模块与通信接口，处理模块用于控制通信接口与外部进行通信，处理模块还用于实现第一方面或第一方面的任一可能的实现方式中的 方法。
第八方面，提供一种芯片，芯片包括处理模块与通信接口，处理模块用于控制通信接口与外部进行通信，处理模块还用于实现第二方面或第二方面的任一可能的实现方式中的方法。
第九方面，提供一种计算机可读存储介质，其上存储有计算机程序，计算机程序被计算机执行时使得计算机实现第一方面或第一方面的任一可能的实现方式中的方法。
第十方面，提供一种计算机可读存储介质，其上存储有计算机程序，计算机程序被计算机执行时使得计算机实现第二方面或第二方面的任一可能的实现方式中的方法。
第十一方面，提供一种包含指令的计算机程序产品，指令被计算机执行时使得计算机实现第一方面或第一方面的任一可能的实现方式中的方法。
第十二方面，提供一种包含指令的计算机程序产品，指令被计算机执行时使得计算机实现第二方面或第二方面的任一可能的实现方式中的方法。
附图说明
图1是本申请实施例的应用场景的示意图。
图2是波束失败恢复的示意性流程图。
图3是本申请实施例提供的确定上行资源的方法的示意性流程图。
图4是本申请实施例提供的确定上行资源的方法的另一示意性流程图。
图5是本申请实施例提供的确定上行资源的方法的再一示意性流程图。
图6是本申请中另一实施例提供的确定下行资源的方法的示意性流程图。
图7是上行载波上的资源与下行载波上的资源之间的关联关系的示意图。
图8是本申请实施例提供的通信装置的示意性框图。
图9是本申请实施例提供的通信装置的另一示意性框图。
图10是本申请实施例提供的通信装置的再一示意性框图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如，第五代(5th generation，5G)系统、新无线(new radio，NR)、机器与机器通信(machine to machine，M2M)系统、或者未来演进的其它通信系统等，本申请实施例对此并不限定。
本申请实施例中的终端设备可以指用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
本申请实施例中的网络设备可以是用于与终端设备通信的设备，可以是任意一种具有无线收发功能的设备或可设置于该设备内的芯片。网络设备可以为基站，基站可以用于与 一个或多个终端设备进行通信，也可以用于与一个或多个具有部分终端设备功能的基站进行通信(例如宏基站与微基站)。网络设备可以是5G系统、NR系统、M2M系统、或者未来演进的其它通信系统中的基站。另外，网络设备也可以为接入点(access point，AP)、传输节点(transport point，TRP)、中心单元(central unit，CU)或其他网络实体，并且可以包括以上网络实体的功能中的一些或所有功能，本申请实施例并不限定。
本申请实施例提供的方案可以应用于终端设备具有多个上行载波的场景。如图1所示，终端设备可以通过上行载波1和上行载波2与网络设备进行通信。应理解，图1仅为示例而非限定，例如，终端设备可以具有2个以上的上行载波。
终端设备具有多个上行载波的场景可以有多种。
场景一，支持补充上行载波(supplementary uplink carrier，SUL carrier)配置的小区。
NR系统支持的工作频段中可用于上行传输的载波频段可以称为NR上行载波(NR uplink carrier，NUL carrier)(下文可称为NUL载波)。在部署高频小区时，由于小区的运行频段较高且终端设备的发射功率较低，处于小区边缘区域的终端设备可以接收到网络设备的信号，但是网络设备可能无法接收到终端设备的信号。针对该问题，NR系统引入补充上行载波(supplementary uplink carrier，SUL carrier)(下文简称为SUL载波)用于辅助终端设备进行上行传输。即在支持SUL载波配置的小区中，有两个上行载波，即NUL载波与SUL载波，可以用于终端设备进行上行传输。
NUL载波的频率高于SUL载波的频率。NUL载波可以为高频载波，例如3GPP标准中的FR1频段或FR2频段。SUL载波可以为低频载波，例如为长期演进(long term evolution，LTE)频段。
作为示例，表1示出SUL载波的频段(表1中所示的频段n80～n86)，表2示出NUL载波的频段n257～n261。
表1
Figure PCTCN2019101364-appb-000001
Figure PCTCN2019101364-appb-000002
表2
Figure PCTCN2019101364-appb-000003
需要说明的是，本文提及“高频”与“低频”是相对的概念，并无严格限制含义。
例如，低频载波可以指工作在6GHz以下的载波，高频载波可以指工作在6GHz及以上的载波。
场景二，载波聚合的场景。终端设备可以采用主小区的上行载波和辅小区的上行载波进行上行传输。
主小区可以支持SUL配置，即主小区具有NUL载波与SUL载波；或者，辅小区也可以支持SUL配置，即辅小区具有NUL载波与SUL载波。即终端设备具有的多个上行载波可以包括主小区的NUL载波与SUL载波，以及辅小区的上行载波(例如，辅小区的NUL载波与SUL载波)。
主小区可以为主小区(primary cell，PCell)或主辅小区(primary secondary cell，PSCell)。辅小区可以记为SCell(secondary cell)。
多个上行载波上配置有用于终端设备进行上行传输的上行资源。
例如，当终端设备要向网络设备上报波束失败请求(beam failure recovery request,BFRQ)消息，多个上行载波上配置有用于发送BFRQ消息的上行资源，例如，随机接入信道(random access channel，RACH)资源。
再例如，当终端设备要向网络设备发送上行调度请求(scheduling request，SR)消息时，多个上行载波上配置有用于上行调度请求的资源。
再例如，当终端设备有上行数据向网络设备上报时，多个上行载波上配置有用于传输上行数据的上行资源。
多个上行载波上还可以配置物理上行控制信道(physical uplink control channel，PUCCH)等其它上行资源。
本申请提出一种，在终端设备具有多个上行载波的情形下，从多个上行载波上的资源中确定用于上行传输的目标上行资源的方案。
当终端设备要向网络设备发送上行调度请求消息时，可以采用本申请的方案，从多个上行载波中确定用于传输上行调度请求消息的目标上行资源。
当终端设备要向网络设备发送BFRQ消息时，可以采用本申请的方案，从多个上行载波中确定用于传输波束失败恢复请求的目标上行资源。
如果终端设备有上行数据到达时，可以采用本申请的方案，从多个上行载波中确定用于传输上行数据的目标上行资源。
为了便于理解与描述，下文以本申请提供的方案应用于终端设备向网络设备发送BFRQ消息为例进行描述。但本申请并非限定于此。
通过将下文实施例中的波束失败恢复请求(BFRQ)消息替换为上行调度请求消息，并将波束失败恢复(BFR)替换为上行调度，可以实现多个上行载波中确定用于传输上行调度请求消息的目标上行资源。
通过将下文实施例中的波束失败恢复请求(BFRQ)消息替换为上行数据，并将波束失败恢复(BFR)替换为上行数据传输，可以实现从多个上行载波中确定用于传输上行数据的目标上行资源。
为了更好地理解本申请实施例，下文结合图2示意性介绍一下波束失败恢复相关概念。
如图2所示，波束失败恢复的流程包括如下四部分。
一、波束失败检测
终端设备基于波束失败检测参考信号(beam failure detection reference signal,BFD RS)，即图2中所示的服务波束q0，进行波束失败检测。当终端设备检测到BFD RS的质量低于门限，确定波束失败。
二、新可用波束发现
终端设备从候选波束(candidate beam)集合中选择波束质量高于门限的候选波束；从选出的候选波束中选择一个作为新可用波束(可以记为q_new)。
候选波束集合可以由网络设备提前配置给终端设备。
三、波束失败恢复请求(beam failure recovery request,BFRQ)消息的发送
终端设备在新可用波束(q_new)关联的物理随机接入信道(physical random access channel，PRACH)资源上使用新可用波束向网络设备发送BFRQ消息。
候选波束集合(包括新可用波束)中各个候选波束关联的PRACH资源可以由网络设备提前配置给终端设备。
四、接收网络设备对BFRQ消息的响应
例如，在发送BFRQ消息后的第4个时隙(slot)开始，终端设备使用新可用波束(q_new)监听专用的控制信道资源集合(control resource set,CORESET)和其对应的搜索空间(search space)，以期获得网络设备对BFRQ消息的响应。例如，该响应为下行控制信道(physical downlink control channel，PDCCH)。
应理解，上文结合图2的描述仅为示例而非限定。
图3为本申请实施例提供的确定上行资源的方法的示意性流程图。该方法可以由终端设备实现，或者也可以由可用于终端设备的芯片实现。下文以执行主体为终端设备为例进行描述。如图3所示，该方法包括如下步骤。
S310，终端设备从多个上行载波上的资源中确定目标上行资源。
多个上行载波上配置有用于当前小区的波束失败恢复(BFR)的资源，即用于发送波束失败恢复请求(BFRQ)消息的资源。当前小区表示发生波束失败的小区。目标上行资源为多个上行载波中的一个上行载波上的用于BFR的资源。
多个上行载波上的用于BFR的资源可以由网络设备预先配置。例如，网络设备可以通过无线资源控制(radio resource control，RRC)信令，为终端设备预配置多个上行载波上的用于BFR的资源。网络设备还可以通过其它下行信令预配置多个上行载波上的用于BFR的资源，本申请对此不作限定。
用于BFR的上行资源可以为随机接入(random access channel，RACH)资源。
S320，终端设备使用目标上行资源，向网络设备发送BFRQ消息。
假设目标上行资源为上行波束X上的资源，在S320中，终端设备在目标上行资源上使用上行波束X向网络设备发送BFRQ消息。
在本申请实施例中，在具有多个上行载波用于波束失败恢复的情况下，确定用于发送波束失败恢复请求消息的目标上行资源，以期望提高波束失败恢复的效率。
多个上行载波均可以为低频载波，或均可以为高频载波，或其中一部分为高频载波，另一部分为低频载波。本文中提及的“高频”与“低频”是相对的概念，并无严格限制含义。例如，低频载波可以指工作在6GHz以下的载波，高频载波可以指工作在6GHz及以上的载波。再例如，在将来演进的技术中，高频载波与低频载波可能会有新的定义。
在当前小区包括主上行载波与补充上行载波的场景中，多个上行载波包括主上行载波与补充上行载波。主上行载波可以是当前小区主要使用的上行载波，补充上行载波可以作为主上行载波的补充，例如补充上行载波用于在主上行载波传输失败时使用。
主上行载波与补充上行载波可以均为高频载波，或者均为低频载波，又或者主上行载波为高频载波，补充上行载波为低频载波。例如，在高频小区中，主上行载波为高频载波，补充上行载波为低频载波。
应理解，主上行载波与补充上行载波仅为了区分而非限定。例如，还可以通过其它名称来区分同一个小区中的多个不同上行载波。本申请对此不作限定。
例如，当前小区包括主上行载波与补充上行载波的场景可以为前文描述的SUL场景，其中，NUL载波对应于主上行载波，SUL载波对应于补充上行载波。
为了便于描述与理解，下文中以主上行载波为NUL载波，补充下行载波为SUL载波为例进行描述。
在载波聚合的场景中，当前小区为主小区，在允许通过辅小区的上行载波用于主小区的BFR的情况下，多个上行载波可以包括主小区的上行载波与辅小区的上行载波。如果主小区支持SUL技术，多个上行载波可以包括主小区的NUL载波与SUL载波，以及辅小区的上行载波。如果辅小区也支持SUL技术，多个上行载波可以包括主小区的NUL载波与SUL载波，以及辅小区的NUL载波与SUL载波。
多个上行载波上可以配置有非竞争资源和/或竞争资源，其中，用于BFR的非竞争资源可以为非竞争随机接入资源(contention-free RACH resource)，用于BFR的竞争资源可 以为竞争随机接入资源(contention-based RACH resource)。
可选地，多个上行载波上还可以配置有上行调度(RS)资源、PUCCH资源或其它上行资源。多个上行载波上还可以配置有除非竞争随机接入资源之外的其它非竞争资源，和/或还可以配置有除竞争接入资源之外的其它竞争资源。
下文实施例中，以非竞争资源为非竞争随机接入资源，以竞争资源为竞争随机接入资源为例进行描述。
在本申请中，从多个上行载波上的资源中确定用于发送BFRQ消息的目标上行资源，可以有多种实现方式。
例如，可以优先选择多个上行载波上的非竞争随机接入资源为目标上行资源。再例如，可以优先选择多个上行载波中NUL载波上的资源(非竞争随机接入资源优先)作为目标上行资源。再例如，可以优先选择多个上行载波中SUL载波上的资源(非竞争随机接入资源优先)作为目标资源。再例如，根据多个上行载波上的资源分别关联的波束属性，从多个上行载波中选择目标上行载波，从目标上行载波上的资源(优先非竞争随机接入资源)中确定目标上行资源。再例如，在载波聚合场景下，根据主小区与辅小区的候选波束质量，从多个上行载波中选择一个小区(主小区或辅小区)的上行载波，在所选小区的上行载波上的资源(非竞争随机接入资源优先)中选择目标上行资源。
需要说明的是，上述的从多个上行载波上的资源中确定用于发送BFRQ消息的目标上行资源的每种实现方式，可以独立使用，也可以基于内在逻辑组合使用。
下文将描述从多个上行载波上的资源确定目标上行资源的多种实现方式。
优先选择非竞争随机接入资源作为目标上行资源的方案。
在从多个上行载波上选择目标上行资源的过程中，优先判断多个上行载波上是否有可用的非竞争随机接入资源，若是，将其中一个上行载波上的非竞争随机接入资源作为目标上行资源，若否，选择一个上行载波上的竞争随机接入资源作为目标上行资源。
例如，当多个上行载波中的至少一个上行载波具有非竞争随机接入资源时，将至少一个上行载波中的一个上行载波(记为上行载波Y)上的非竞争随机接入资源确定为目标上行资源。
在当前小区支持SUL技术的场景中，上行载波Y可以是NUL载波，也可以是SUL载波。
在载波聚合场景中，上行载波Y可以是主小区的一个上行载波，也可以是辅小区的一个上行载波。
应理解，终端设备使用非竞争随机接入资源发起随机接入，不会发生冲突(collision)，也不需要冲突解决。因此，相对于使用竞争随机接入资源发起随机接入，使用非竞争随机接入资源发起随机接入，终端设备拥有更小的接入时延以及更高的接入成功率。因此，本申请通过从多个上行载波中优先选择非竞争随机接入资源发送波束失败恢复请求消息，可以提高波束失败恢复的效率与成功率。
可选地，当多个上行载波中的至少一个上行载波具有非竞争随机接入资源时，可以从至少一个上行载波中随机选择一个上行载波，将所选上行载波上的非竞争随机接入资源作为目标上行资源。
可选地，当多个上行载波中的至少一个上行载波具有非竞争随机接入资源时，可以从至少一个上行载波中优先选择某个上行载波，将所选上行载波上的非竞争随机接入资源作 为目标上行资源。
例如，多个上行载波包括NUL载波与SUL载波。可以优先从至少一个上行载波中选择NUL载波上的非竞争随机接入资源作为目标上行资源，或者，优先从至少一个上行载波中选择SUL载波上的非竞争随机接入资源作为目标上行资源。
下文将分别描述优先选择NUL载波上的非竞争随机资源的方案，与优先选择SUL载波上的非竞争随机接入资源的方案。
优先选择NUL载波上的非竞争随机资源作为目标上行资源的方案。
在从多个上行载波中选择目标上行资源的过程中，优先判断NUL载波上是否有可用的非竞争随机接入资源，若有，将NUL载波上的非竞争随机接入资源作为目标上行资源，即使用NUL载波上的非竞争随机接入资源发送BFRQ消息。
应理解，由于NUL载波可能工作在高频频段，可以使用协议定义的更大的子载波间隔传输，相应的每个符号时间(绝对时间)更短，所以相比于SUL载波，NUL载波上的随机接入资源的配置可以更加密集，可以使得终端设备在相对较短的时间内使用资源的机会较多，可以有效减少传输时延。
因此，在本申请中，在终端设备具有多个上行载波的情况下，优先选择多个上行载波中NUL载波上的非竞争随机接入资源发送BFRQ消息，可以减少BFR的时延，从而可以有效提高BFR的效率。
在优先选择NUL载波上的非竞争随机资源作为目标上行资源的过程中，如果NUL载波上没有可用的非竞争随机接入资源，或者利用NUL载波上的非竞争随机接入资源发送BFRQ消息失败，判断其它载波上是否有非竞争随机接入资源，若有，使用其发送BFRQ消息，若无，使用多个上行载波上的竞争随机接入资源发送BFRQ消息。
例如，当NUL载波上没有可用的非竞争随机接入资源，或者利用NUL载波上的非竞争随机接入资源发送BFRQ消息失败时，判断SUL载波上是否具有可用的非竞争随机接入资源，若SUL载波上有可用的非竞争随机接入资源，使用SUL载波上的非竞争随机接入资源发送BFRQ消息；如果NUL载波与SUL载波上均没有可用的非竞争随机接入资源，或者，使用非竞争随机接入资源发送BFRQ消息均失败，则可以考虑使用多个上行载波上的竞争随机接入资源发送BFRQ消息。
可选地，在一些实施例中，NUL载波上配置有波束失败恢复定时器(beam failure recovery timer)，该波束失败恢复定时器如果超时，则NUL载波上的非竞争随机接入资源不可用。
上面实施例中提到的NUL载波上没有可用的非竞争随机接入资源指的是，NUL载波上未配置非竞争随机接入资源，或者NUL载波上的波束失败恢复定时器超时。
可选地，在一些实施例中，SUL载波上配置有波束失败恢复定时器(beam failure recovery timer)，该波束失败恢复定时器如果超时，则SUL载波上的非竞争随机接入资源不可用。
上面实施例中提到的SUL载波上没有可用的非竞争随机接入资源指的是，SUL载波上未配置非竞争随机接入资源，或者NUL载波上的波束失败恢复定时器超时。
NUL载波的波束失败恢复定时器与SUL载波的波束失败恢复定时器可以由网络设备配置。
例如，网络设备可以通过如下配置信息(//后面为注释)，定义NUL载波的波束失败 恢复定时器与SUL载波的波束失败恢复定时器。如下的配置信息可以携带在RRC信令或其它下行信令中。
beamFailureRecoveryTimer-CFRA-NUL//为NUL载波配置波束失败恢复定时器。
Timer for beam failure recovery timer on NUL.Upon expiration of the timer the UE does not use CFRA on NUL for BFR.//配置NUL载波的波束失败恢复定时器的功能。
beamFailureRecoveryTimer-CFRA-SUL//为SUL载波配置波束失败恢复定时器。
Timer for beam failure recovery timer on SUL.Upon expiration of the timer the UE does not use CFRA on SUL for BFR.//配置SUL载波的波束失败恢复定时器的功能。
再例如，网络设备可以通过如下配置信息(//后面为注释)，定义NUL载波的波束失败恢复定时器的使用方法以及SUL载波的波束失败恢复定时器的使用方法。如下的配置信息可以携带在RRC信令或其它下行信令中。
XXXX condition,the MAC entity shall:
1>if the contention-free Random Access Preamble for beam failure recovery request was configured on NUL:
2>start beamFailureRecoveryTimer-CFRA-NUL timer and start RA procedure on NUL；
3>Till expiration of the timer,BFR is not successfully completed；//如果NUL载波上配置了非竞争随机接入资源，当开始使用NUL载波上的非竞争随机接入资源进行随机接入时，NUL载波的波束失败恢复定时器开始计时，直到该定时器超时时，若随机接入还未成功，利用NUL载波上的非竞争随机接入资源发送BFRQ失败。
4>if the contention-free Random Access Preamble for beam failure recovery request was configured on SUL:
5>start beamFailureRecoveryTimer-CFRA-SUL timer.//如果SUL载波上配置了非竞争随机接入资源，当开始使用SUL载波上的非竞争随机接入资源进行随机接入时，SUL载波的波束失败恢复定时器开始计时。
作为示例而非限定，下文结合图4，描述终端设备优先选择NUL载波上的非竞争随机接入资源作为目标上行资源的具体流程。如图4所示，包括如下步骤。
S401，检测当前小区波束失败，当前小区具有NUL载波与SUL载波。
S402，判断NUL载波上是否配置有非竞争随机接入资源，若是，转到S403，若否，转到S406。
S403，判断NUL载波的波束失败恢复定时器是否超时，若是，转到S406，若否，转到S404。
S404，使用NUL载波上的非竞争随机接入资源发送BFRQ消息。
S405，检测使用NUL载波上的非竞争随机接入资源发送BFRQ消息是否成功，若是，转到S414，若否，转到S406。
S406，判断SUL载波上是否配置有非竞争随机接入资源，若是，转到S407，若否，转到S410。
S407，判断SUL载波的波束失败恢复定时器是否超时，若是，转到S410，若否，转到S408。
S408，使用SUL载波上的非竞争随机接入资源发送BFRQ消息。
S409，检测使用SUL载波上的非竞争随机接入资源发送BFRQ消息是否成功，若是， 转到S414，若否，转到S410。
S410，判断SUL载波上是否配置有竞争随机接入资源，若是，转到S411，若否，转到S413。
S411，使用SUL载波上的竞争随机接入资源发送BFRQ消息。
S412，检测使用SUL载波上的竞争随机接入资源发送BFRQ消息是否成功，若是，转到S414，若否，转到S413。
S413，使用NUL载波上的竞争随机接入资源发送BFRQ消息。
S414，接收网络设备发送的波束失败恢复响应消息。
上述步骤S403与步骤S407是可选的，即执行完步骤S402后可以直接执行步骤S404，执行完步骤S406后可以直接执行步骤S408。
可选地，终端设备可以按照预设的资源使用优先级，从多个上行载波上的资源中选择目标上行资源(即用于发送BFRQ的上行资源)，该资源使用优先级表示多个上行载波上的资源的使用优先级顺序。
例如，该资源使用优先级为：NUL载波的非竞争随机接入资源＞SUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源，终端设备可以按照图4所示的操作流程，实现按照该资源使用优先级从多个上行载波中确定目标上行资源。
可选地，该资源使用优先级可以是协议规定的。
可选地，该资源使用优先级可以是网络设备预配置的。例如，网络设备可以通过RRC信令或其它下行信令为终端设备配置该资源使用优先级。
应理解，由于NUL载波可能工作在高频频段，可以使用协议定义的更大的子载波间隔传输，相应的每个符号时间(绝对时间)更短，所以相比于SUL载波，NUL载波上的随机接入资源的配置可以更加密集，可以使得终端设备在相对较短的时间内使用资源的机会较多，可以有效减少传输时延。
因此，在本申请中，在终端设备具有多个上行载波的情况下，优先选择多个上行载波中NUL载波上的非竞争随机接入资源发送BFRQ消息，可以减少BFR的时延，从而可以有效提高BFR的效率。
此外，NUL载波上的非竞争随机接入资源总数较多，可以为下行的窄波束(例如CSI-RS)配置相关联的非竞争随机接入资源，这样使得，终端设备在完成BFR后，可以不用再重新进行波束扫描和波束训练，从而使得终端设备可以经历相对更短的数据传输恢复时延。因此，优先选择NUL载波上的非竞争随机接入资源，可以减少BFR的时延，从而可以提高BFR的效率。
优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案。
在从多个上行载波中选择目标上行资源的过程中，优先判断SUL载波上是否有可用的非竞争随机接入资源，若有，将SUL载波上的非竞争随机接入资源作为目标上行资源，即使用SUL载波上的非竞争随机接入资源发送BFRQ消息。
换句话说，优先使用多个上行载波中频段/中心频点相对较低的上行载波上的非竞争随机接入资源发送BFRQ消息。例如，终端设备被网络配置了多个上行载波，其中有一个上行载波工作在28GHz，另一个上行载波工作在39GHz，则终端设备可以优先选择工作在28GHz的上行载波上的资源进行BFR。
应理解，终端设备发送功率有限，在终端设备使用相同功率发送信号时，低频信号在自由空间中的路径损耗比高频信号小。相对于NUL载波，SUL载波工作在较低频段，SUL载波相比于NUL载波具有更好的上行覆盖。因此，优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息，可以提高BFRQ消息的传输可靠性，从而可以提高BFR的成功概率。
例如，在高频系统波束失败场景中，可以优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息。
需要说明的是，本申请提出的优先选择多个上行载波上的非竞争随机接入资源作为目标上行资源的方案，并非绝对限制多个上行载波上的所有非竞争随机接入资源的使用优先级均高于多个上行载波上的所有竞争随机接入资源。例如，在优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案中，NUL载波上的非竞争随机接入资源的使用优先级可以低于SUL载波上的竞争随机接入资源。
例如，在优先选择SUL载波上的非竞争随机资源作为目标上行资源的过程中，如果SUL载波上没有可用的非竞争随机接入资源，或者利用SUL载波上的非竞争随机接入资源发送BFRQ消息失败，可以优先使用SUL载波上的竞争随机接入资源或NUL载波上的非竞争随机接入资源发送BFRQ消息。
可选地，在优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案中，SUL载波上也可以配置有波束失败恢复定时器，该波束失败恢复定时器如果超时，则SUL载波上的非竞争随机接入资源不可用；NUL载波上也可以配置有波束失败恢复定时器，该波束失败恢复定时器如果超时，则NUL载波上的非竞争随机接入资源不可用。
上面实施例中提到的SUL载波上没有可用的非竞争随机接入资源指的是，SUL载波上未配置非竞争随机接入资源，或者NUL载波上的波束失败恢复定时器超时。上面实施例中提到的NUL载波上没有可用的非竞争随机接入资源指的是，NUL载波上未配置非竞争随机接入资源，或者NUL载波上的波束失败恢复定时器超时。
关于NUL载波上的波束失败恢复定时器以及SUL载波上的波束失败恢复定时器的配置方法，如前文描述，为了简洁，这里不再赘述。
作为示例而非限定，下文结合图5，描述终端设备优先选择SUL载波上的非竞争随机接入资源作为目标上行资源的具体流程。如图5所示，包括如下步骤。
S501，检测当前小区波束失败，当前小区具有NUL载波与SUL载波。
S502，判断SUL载波上是否配置有非竞争随机接入资源，若是，转到S503，若否，转到S506。
S503，判断SUL载波的波束失败恢复定时器是否超时，若是，转到S506，若否，转到S504。
S504，使用SUL载波上的非竞争随机接入资源发送BFRQ消息。
S505，检测使用SUL载波上的非竞争随机接入资源发送BFRQ消息是否成功，若是，转到S514，若否，转到S506。
S506，判断SUL载波上是否配置有竞争随机接入资源，若是，转到S507，若否，转到S509。
S507，使用SUL载波上的竞争随机接入资源发送BFRQ消息。
S508，检测使用SUL载波上的竞争随机接入资源发送BFRQ消息是否成功，若是， 转到S514，若否，转到S509。
S509，判断NUL载波上是否配置有非竞争随机接入资源，若是转到S510，若否，转到S513。
S510，判断NUL载波的波束失败恢复定时器是否超时，若是，转到S513，若否，转到S511。
S511，使用NUL载波上的非竞争随机接入资源发送BFRQ消息。
S512，检测使用NUL载波上的非竞争随机接入资源发送BFRQ消息是否成功，若是，转到S514，若否，转到S513。
S513，使用NUL载波上的竞争随机接入资源发送BFRQ消息。
S514，接收网络设备发送的波束失败恢复响应消息。
上述步骤S503与步骤S510是可选的，即执行完步骤S502后可以直接执行步骤S504，执行完步骤S509后可以直接执行步骤S511。
在图5中，SUL载波上的竞争随机接入资源的使用优先级高于NUL载波上的非竞争随机接入资源的使用优先级。
可选地，NUL载波上的非竞争随机接入资源的使用优先级可以高于SUL载波上的竞争随机接入资源的使用优先级。例如，当SUL载波上没有可用的非竞争随机接入资源，或者，使用SUL载波上的非竞争随机接入资源发送BFRQ消息失败时，优先使用NUL载波上的非竞争随机接入资源，次优先使用SUL载波上的竞争随机接入资源。
可选地，终端设备可以按照预设的资源使用优先级，从多个上行载波上的资源中选择目标上行资源(即用于发送BFRQ的上行资源)，该资源使用优先级表示多个上行载波上的资源的使用优先级顺序。
例如，该资源使用优先级为：SUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的非竞争随机接入资源＞NUL载波的竞争随机接入资源。或者，该资源使用优先级为：SUL载波的非竞争随机接入资源＞NUL载波的非竞争随机接入资源＞SUL载波的竞争随机接入资源＞NUL载波的竞争随机接入资源。
可选地，该资源使用优先级可以指示多个上行资源的使用优先级顺序，还可以直接指示优先级最高的资源类型。
可选地，该资源使用优先级可以是协议规定的。
可选地，该资源使用优先级可以是网络设备预配置的。例如，网络设备可以通过RRC信令或其它下行信令为终端设备配置该资源使用优先级。
在本申请实施例中，在终端设备具有多个上行载波的情况下，优先选择多个上行载波中SUL载波上的非竞争随机接入资源发送BFRQ消息。应理解，终端设备发送功率有限，在终端设备使用相同功率发送信号时，低频信号在自由空间中的路径损耗比高频信号小。相对于NUL载波，SUL载波工作在较低频段，SUL载波相比于NUL载波具有更好的上行覆盖。因此，优先使用SUL载波上的非竞争随机接入资源发送BFRQ消息，可以提高BFRQ消息的传输可靠性，从而可以提高BFR的成功概率。
上文描述了优先选择NUL载波上的非竞争随机资源作为目标上行资源的方案，与优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案。
可选地，在一些实施例中，在检测到当前小区的候选波束的质量超过门限的情况下，优先选择NUL载波上的非竞争随机资源作为目标上行资源；在检测到当前小区的候选波 束的质量低于门限的情况下，优先选择SUL载波上的非竞争随机资源作为目标上行资源。
终端设备通过测量可以获取候选波束的质量。
例如，候选波束的质量可以是在物理层测量得到的该候选波束对应的可以是该候选波束的参考信号接收功率(reference signal receiving power，RSRP)或参考信号接收质量(reference signal receiving quality，RSRQ)。
用于衡量候选波束的质量的门限可以是协议规定的，或者，可以是网络设备配置的。
例如，网络设备可以通过RRC信令或其它下行信令配置该门限。
可选地，在载波聚合场景下，如果辅小区的上行载波也允许用于当前小区的BFR，该多个上行载波除了包括主小区(即当前小区)的NUL载波与SUL载波，还包括辅小区的上行载波，这种情形下，终端设备通过如下方式，从多个上行载波上的资源中确定发送BFRQ消息的目标上行资源。
方式1)，优先使用多个上行载波上的非竞争随机接入资源，当多个上行载波上无可用的非竞争随机接入资源，或者，使用多个上行载波上的非竞争随机接入资源发送BFRQ消息失败时，使用多个上行载波上的竞争随机接入资源发送BFRQ消息。
例如，资源使用优先级为：主小区的NUL载波上的非竞争随机接入资源>主小区的SUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。
再例如，资源使用优先级为：主小区的SUL载波上的非竞争随机接入资源>主小区的NUL载波上的非竞争随机接入资源>辅小区的上行载波上的非竞争随机接入资源>主小区的SUL载波上的竞争随机接入资源>主小区的NUL载波上的竞争随机接入资源>辅小区的上行载波上的竞争随机接入资源。
方式2)，优先使用主小区的上行载波上的资源，当主小区的上行载波上无可用于发送BFRQ消息的资源，或者，使用主小区的上行载波上的资源发送BFRQ消息失败时，使用辅小区的上行载波上的资源(优先非竞争随机接入资源)发送BFRQ消息。
可以采用前文描述的优先选择非竞争随机接入资源作为目标上行资源的方案、优先选择NUL载波上的非竞争随机资源作为目标上行资源的方案、或优先选择SUL载波上的非竞争随机资源作为目标上行资源的方案中的任一种方案，优先使用主小区的上行载波上的资源。
可选地，在载波聚合场景下，根据主小区的候选波束的质量与辅小区的候选波束的质量，选择主小区的上行载波上的资源或辅小区的上行载波上的资源作为目标上行资源。
换句话说，通过比较主小区的候选波束的质量与辅小区的候选波束的质量，确定优先使用主小区的上行载波上的资源或优先使用辅小区的上行载波上的资源。
候选波束的质量可以为参考信号接收功率(reference signal receiving power，RSRP)或参考信号接收质量(reference signal receiving quality，RSRQ)。
可选地，当主小区的候选波束的质量与预设偏移量之和，大于或等于辅小区的候选波束的质量时，选择主小区的上行载波上的资源作为目标上行资源，即优先使用主小区的上行载波上的资源。
当主小区的候选波束的质量与预设偏移量之和，小于辅小区的候选波束的质量时，选择主小区的上行载波上的资源作为目标上行资源，即优先使用辅小区的上行载波上的资 源。
该预设偏移量可以是网络设备预配置的，例如，网络设备通过RRC信令或其它下行信令预配置该预设偏移量。
该预设偏移量还可以是协议规定的。
可选地，还可以基于主小区的候选波束的质量与辅小区的候选波束的质量，通过其它方式，确定优先使用主小区的上行载波上的资源还是辅小区的上行载波上的资源。本申请对此不作限定。
应理解，在载波聚合场景中，在确定优先使用主小区与辅小区之中的一个小区的上行资源后，可以采用上文提供的任一种目标上行资源的选择方法从所选的小区的上行载波的资源上确定目标上行载波。
本申请还提出一种根据上行载波上的资源关联的波束属性，从多个上行载波中确定目标上行资源的方案。
可选地，在一些实施例中，步骤310包括：分别根据多个上行载波上的资源关联的波束属性，从多个上行载波中选择目标上行载波；将目标上行载波上的资源确定为目标上行资源。
可选地，多个上行载波包括第一载波与第二载波，第一载波上的资源关联信道状态信息参考信号(channel state information-reference signal，CSI-RS)，第二载波上的资源关联同步信号块(synchronization signal block，SSB)，选择第一载波为目标上行载波。
换句话说，多个上行载波中，任一个资源关联到CSI-RS的上行载波的资源使用优先级高于关联到SSB的上行载波的资源使用优先级。
第一载波与第二载波仅为了区分而非限定。第一载波表示多个上行载波中任一个资源关联到CSI-RS的载波，第二载波表示多个上行载波中任一个资源关联到SSB的载波。
例如，第一载波与第二载波分别为同一小区的NUL载波与SUL载波。再例如，第一载波与第二载波分别为主小区的上行载波与辅小区的上行载波。
应理解，通常认为SSB是一个宽波束，CSI-RS是窄波束，例如多个CSI-RS可以认为是准同位(quasi-co-location，QCL)到一个SSB的。如果终端设备波束失败恢复到一个窄波束，可以增大波束赋型增益，从而可以支持更高的数据速率。
因此，本申请实施例在多个上行载波中，通过优先选择资源关联到CSI-RS的上行载波上的资源进行BFR，可以使得恢复到的波束可以获得更高的天线增益(波束赋型增益)，从而支持更高的数据速率。
可选地，优先选择资源关联到CSI-RS的上行载波上的资源进行BFR的方案，可以应用于作比较的两个载波均具有非竞争随机接入资源，或均具有竞争随机接入资源的场景。
可选地，优先选择资源关联到CSI-RS的上行载波上的资源进行BFR的方案，可以应用终端设备具有多个上行载波用于BFR的各种场景。
可选地，优先选择资源关联到CSI-RS的上行载波上的资源进行BFR的方案，还可以应用于上述某些实施例中。
例如，在优先选择多个上行载波上的非竞争随机接入资源进行BFR的方案中，如果检测到有两个上行载波上均有可用的非竞争随机接入资源，这时，如果一个上行载波上的资源关联CSI-RS，另一个上行载波上的资源关联SSB，则优先选择关联到CSI-RS的上行载波上的非竞争随机接入资源进行BFR。
可选地，多个上行载波包括第三载波与第四载波，第三载波上的资源关联的候选波束的数量小于或等于第四载波上的资源所关联的候选波束的数量；将第三载波确定为目标上行载波。
换句话说，优先使用关联的候选波束的数量较少的上行载波进行BFR。
第三载波与第四载波仅为了区分而非限定。第三载波与第四载波表示多个上行载波中任两个资源关联的候选波束的数量不同的上行载波。
例如，如果多个上行载波中的一个上行载波(可以记为第三载波)上的随机接入资源关联到X个候选波束，另一个上行载波(可以记为第四载波)上的随机接入资源关联到Y个候选波束，且X<Y，则终端设备优先在关联到X个候选波束的第三载波上进行BFR。
以X为2，Y为4为例。如果终端设备使用第三载波上的随机接入资源进行BFR，网络设备需要在2个波束方向上进行波束失败恢复响应；如果终端设备使用第四载波上的随机接入资源进行BFR，网络设备需要在4个保护方向上进行波束恢复响应。因此，相对于使用第四载波上的资源进行BFR，终端设备使用第三载波上的资源进行BFR，可以为网络设备指示一个较小的波束失败恢复响应波束范围，从而可以为节约网络设备的资源开销，也有利于后续的波束管理。
因此，本申请实施例在多个上行载波中，通过优先选择资源关联的候选波束的数量较少的上行载波上的资源进行BFR，可以为节约网络设备的资源开销，也有利于后续的波束管理。
可选地，优先选择资源关联的候选波束的数量较少的上行载波上的资源进行BFR的方案，可以应用于作比较的两个载波均具有非竞争随机接入资源，或均具有竞争随机接入资源的场景。
可选地，优先选择资源关联的候选波束的数量较少的上行载波上的资源进行BFR的方案，可以应用终端设备具有多个上行载波用于BFR的各种场景。
可选地，优先选择资源关联的候选波束的数量较少的上行载波上的资源进行BFR的方案，还可以应用于上述某些实施例中。
例如，在优先选择多个上行载波上的非竞争随机接入资源进行BFR的方案中，如果检测到有两个上行载波上均有可用的非竞争随机接入资源，这时，如果这两个上行载波上的资源关联的候选波束的数量不同，则优先选择关联较少数量的候选波束的上行载波上的非竞争随机接入资源进行BFR。
上述可知，本申请实施例，在具有多个上行载波用于BFR的情况下，提出多种从多个上行载波上的资源中选择用于发送BFRQ消息的目标上行资源的实现方式。例如，可以优先选择多个上行载波上的非竞争随机接入资源为目标上行资源。再例如，可以优先选择多个上行载波中NUL载波上的资源(非竞争随机接入资源优先)作为目标上行资源。再例如，可以优先选择多个上行载波中SUL载波上的资源(非竞争随机接入资源优先)作为目标资源。再例如，优先选择多个上行载波中资源关联到CSI-RS的上行载波上的资源为目标上行资源。再例如，优先选择多个上行载波中资源关联的候选波束的数量较少的上行载波上的资源为目标上行资源。再例如，在载波聚合场景下，在主小区与辅小区的上行载波中，优先选择候选波束的质量较高的小区的上行载波上的资源(非竞争随机接入资源优先)为目标上行资源。这些实现方式中的每种方式，可以独立使用，也可以基于内在逻辑组合使用。上述这些实现方式，有的可以提高BFR的效率与成功率，有的可以提高恢 复到的波束的数据速率，有的可以节省网络设备的资源开销。
总之，本申请实施例，在具有多个上行载波用于BFR的情况下，提出了一种有助于波束失败恢复的资源选择方案。
上文以波束失败恢复(BFR)场景为例，描述了从多个上行载波中选择目标上行资源进行上行传输的方法。但本申请并非限定于此。本申请提供的从多个上行载波中确定上行资源的方案还可以应用于其它上行传输场景，例如，终端设备向网络设备上报调度请求消息的场景，再例如，终端设备向网络设备上报上行数据的场景。
通过将上文各个实施例中的波束失败恢复请求(BFRQ)消息替换为上行调度请求消息，并将波束失败恢复(BFR)替换为上行调度，可以实现多个上行载波中确定用于传输上行调度请求消息的目标上行资源。
可选地，将上文各个实施例中的非竞争随机接入资源替换为上行调度资源，这样的话，可以优先选择NUL载波上的上行调度资源发送上行调度请求消息，或者，可以优先选择SUL载波上的上行调度资源发送上行调度请求消息，或者，可以根据上行载波上的资源所关联的波束属性，从多个载波上选择目标上行载波，使用目标上行载波上的上行调度资源发送上行调度请求消息。
通过将上文实施例中的波束失败恢复请求(BFRQ)消息替换为上行数据，并将波束失败恢复(BFR)替换为上行数据传输，可以实现从多个上行载波中确定用于传输上行数据的目标上行资源。
可选地，将上文各个实施例中的非竞争随机接入资源替换为上行资源，这样的话，可以优先选择NUL载波上的上行资源发送上行数据，或者，可以优先选择SUL载波上的上行资源发送上行数据，或者，可以根据上行载波上的资源所关联的波束属性，从多个载波上选择目标上行载波，使用目标上行载波上的上行资源发送上行数据。
在一些场景中，终端设备发送BFRQ消息的目标上行资源所在的上行载波对应多个下行载波。例如，终端设备使用SUL载波上的非竞争随机接入资源发送BFRQ消息，SUL载波对应多个下行载波。这种场景中，终端设备需要从多个下行载波中确定用于接收网络设备发送的BFR响应消息的目标下行载波，且在目标下行载波上的载波带宽part(bandwidth part，BWP)中确定用于接收BFR响应的目标BWP。
目前，尚无可以适用于上述场景的确定下行资源的方案。
本申请提出一种确定下行资源的方法。该方法还可应用于终端设备发送BFRQ消息的上行载波对应多个下行载波的场景。如图6所示，该方法包括如下步骤。
S610，终端设备使用目标上行载波上的目标上行资源向网络设备发送BFRQ消息。
例如，目标上行资源为竞争随机接入资源。
可选地，该目标上行载波对应多个下行载波。每个下行载波上可以具有多个BWP，例如具有4个BWP。
S620，终端设备获取上下行载波关联关系，该上下行载波关联关系中包括该目标上行载波与目标下行载波之间的关联关系。
该目标上行载波与目标下行载波之间的关联关系，可以是协议规定的，也可以是网络设备配置的。
S630，终端设备利用该目标下行载波，接收网络设备发送的波束失败恢复响应消息(简称为BFR响应消息)。
本申请提供的方案，有助于中终端设备有效地确定用于监听BFR响应消息的下行资源。
终端设备可以通过多种实现方式，获取上下行载波关联关系，即获取目标下行载波。
可选地，上下行载波关联关系是协议规定的，或者可以称为是默认的。
例如，终端设备使用SUL载波上的随机接入资源发送BFRQ消息，该SUL载波对应多个下行载波，终端设备默认在主小区的一个下行载波上监听BFR响应消息。主小区为PCell或PSCell。换句话说，默认地，SUL载波与主小区的一个下行载波具有关联关系。
再例如，终端设备使用SUL载波上的随机接入资源发送BFRQ消息，该SUL载波对应多个下行载波，终端设备默认在该SUL载波所在的小区的一个下行载波上监听BFR响应消息。换句话说，默认地，SUL载波与同小区的一个下行载波具有关联关系。
可选地，上下行载波关联关系是网络设备预配置的。
例如，网络设备向终端设备发送配置信息，该配置信息中携带上下行载波关联关系的信息。
例如，通过载波所在的小区的索引来指示上下行载波关联关系，例如，通过一个上行载波的ServCellIndex或者SCellIndex，与一个下行载波的ServCellIndex或者SCellIndex，来指示这个上行载波与这个下行载波之间的关联关系。
可选地，上下行载波关联关系指的是，网络设备在配置非竞争随机接入资源时，确定的上行载波与下行载波之间的关联关系。
上文描述了终端设备通过上下行载波关联关系，确定用于接收BFR响应消息的目标下行载波。
应理解，一个下行载波可以包括多个BWP，例如包括4个BWP。确定目标下行载波后，终端设备还需要确定目标下行载波上用于接收BFR响应消息的目标BWP。
终端设备可以通过多种实现方式，确定目标下行载波上用于接收BFR响应消息的目标BWP。
可选地，采用目标下行载波上索引与发送BFRQ消息的BWP的索引相同BWP作为目标BWP。
例如，终端设备在SUL载波使用BWP x(x是BWP的索引(index))上的随机接入资源发送BFRQ消息，则可以在目标下行载波的BWP x上监听BFR响应消息。
可选地，在一些场景中，下行载波只有1个BWP，这时，确定目标下行载波之后，可以直接在目标下行载波的1个BWP上，监听BFR响应消息。
例如，在SUL载波的BWP 0～3上均有随机接入资源，下行载波上只有个BWP 0，无论终端设备在SUL载波的哪个BWP上发送BFRQ消息，终端设备确定目标下行载波之后，在目标下行载波的BWP 0上监听BFR响应消息。
可选地，按照下行载波中的BWP与上行载波中的BWP之间的关联关系，确定目标下行载波上用于接收BFR响应消息的目标BWP。
例如，下行载波中的BWP与上行载波中的BWP之间的关联关系，指的是，下行载波中的BWP的索引与上行载波中的BWP的索引之间的升序关联关系。
如图7所示，SUL载波上包括BWP 0～3，其中，BWP 0和BWP 1上没有随机接入资源，BWP 2和BWP 3上具有随机接入资源，下行载波上具有BWP 0和BWP 1。在图7中，下行载波中的BWP与上行载波中的BWP之间的关联关系为SUL载波的BWP 2与下 行载波的BWP 0关联，SUL载波的BWP 3与下行载波的BWP 1关联。例如，终端设备使用图7中得到SUL载波上的BWP 2上的随机接入资源发送BFRQ消息，则终端设备使用目标下行载波上的BWP 0监听BFR响应消息。再例如，终端设备使用图7中得到SUL载波上的BWP 3上的随机接入资源发送BFRQ消息，则终端设备使用目标下行载波上的BWP 1监听BFR响应消息。
可选地，终端设备通过网络设备的配置信息，确定目标下行载波上用于接收BFR响应消息的目标BWP，该配置信息中包括用于指示目标上行载波中的BWP与目标下行载波中的BWP之间的关联关系的信息，或者，该配置信息中包括用于指示终端设备接收BFR响应消息的BWP的位置。
可选地，在本实施例中，用于监听BFR响应消息的目标下行载波以及目标下行载波上用于监听BFR响应消息的目标BWP，均可以由网络设备为终端设备配置，可以单独分开配置，也可以合在一起配置。
例如，网络设备向终端设备发送配置信息，该配置信息中携带上下行载波关联关系，上下行载波关联关系中包括目标上行载波与目标下行载波之间的关联关系，该配置信息中还包括目标上行载波上的BWP与目标下行载波上的BWP之间的关联关系。
因此，在本申请实施例中，即使在发送BFRQ消息所在的上行载波对应多个下行载波的情况下，终端设备也可以确定出用于监听BFR响应消息的下行载波。
可选地，在某些实施例中，如果终端设备具有的两个上行载波不是QCL的，例如载波1是低频载波，载波2是高频载波，这种情形下的波束失败恢复可以称为是跨载波波束失败恢复。跨载波波束失败恢复可以按照以下流程进行。
1)网络设备配置下行载波与上行RACH资源的关联关系。
例如，网络设备配置载波1上的RACH资源与载波2的下行信号(候选波束)的关联关系。网络设备可以通过RRC消息配置关联关系。
2)载波2上发生了波束失败。
3)终端设备在载波2上寻找新的候选波束。终端设备的物理层会向终端设备的MAC层上报满足条件的波束。
4)终端设备使用载波1上的RACH资源发起BFRQ消息。在发送BFRQ消息后4个时隙，终端设备开始在载波2上监听网络设备的响应，即载波2上的在一个窗口内的一个PDCCH，其中循环冗余码(cyclic redundancy code，CRC)使用小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)进行加扰。
5)网络设备在载波1上收到终端设备的BFRQ消息，可以确定是该终端设备在载波2上发生了波束失败，并且终端设备请求的新波束可以通过之前RACH资源与波束的关联关系确定。
因此，本实施例提出一种在高频载波(或低频载波)上发送BFRQ消息，在低频载波(或高频载波)上检测BFR响应消息的波束失败恢复方案。
上述跨载波波束失败恢复的流程可以适用于如下两个场景。
1)载波2没有相关联的/或相对应的上行载波；或者没有相应的上行传输资源或PRACH资源。
2)载波1为低频的上行载波，由于低频的上行覆盖更好，所以相应的RACH成功率更高。
可选地，在某些实施例中，如果终端设备具有的两个上行载波是QCL的，例如，载波1和载波2是QCL的，且载波1和载波2工作在高频频段，这种情形下的波束失败恢复也可以称为是跨载波波束失败恢复。该跨载波波束失败恢复可以按照以下流程进行。
1)网络设备配置下行载波与上行RACH资源的关联关系。
例如，网络设备配置载波1上的RACH资源与载波2的下行信号(候选波束)的关联关系。网络设备可以通过RRC消息配置关联关系。
2)如果载波1和载波2上的用于波束失败检测(BFD)的参考信号具有QCL关系，那么波束失败检测既可以在载波1上进行，也可以在载波2上进行。波束失败实例(beam failure instance)的计算应该包括两个载波上的波束失败检测结果。
3)当波束失败检测的结果为波束失败时，终端设备在载波1和载波2上均可以进行候选波束检测。
4)终端设备的MAC层选择相应的RACH资源。
可选地，如果有多个波束满足条件，终端设备可以选择时间上最近的随机接入资源(RACH occasion，RO)，这样可以加速BFR的过程。
5)终端设备的物理层基于自身MAC层的配置，可以在载波1上发送RACH msg1进行波束失败恢复请求。4个时隙后，终端设备开始在相同的载波上接收网络设备的BFR响应消息。
例如，网络设备的BFR响应消息可以是PDCCH，其中，CRC通过C-RNTI进行加扰。
因此，本实施例提出一种在高频载波上发送BFRQ消息，在高频载波上检测BFR响应消息的波束失败恢复方案。
本文中描述的各个实施例可以为独立的方案，也可以根据内在逻辑进行组合，这些方案都落入本申请的保护范围中。
可以理解的是，上述各个方法实施例中，由终端设备实现的方法和操作，也可以由可用于终端设备的部件(例如芯片或者电路)实现，由网络设备实现的方法和操作，也可以由可用于网络设备的部件(例如芯片或者电路)实现。
上文描述了本申请实施例提供的方法实施例，下文将描述本申请实施例提供的装置实施例。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
上述主要从各个网元之间交互的角度对本申请实施例提供的方案进行了介绍。可以理解的是，各个网元，例如发射端设备或者接收端设备。为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例对发射端设备或者接收端设备进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。下面以采用对应各个功能划分各个功能 模块为例进行说明。
如图8所示，本申请实施例还提供一种通信装置800，该通信装置800可以为终端设备，也可以为可用于终端设备的部件(例如芯片或者电路)。该通信装置800包括处理单元810与发送单元820，该处理单元810用于执行上文方法实施例中终端设备侧的处理步骤，该发送单元820用于执行上行方法实施例中终端设备侧的发送步骤。
处理单元810和发送单元820的操作或者实现可以参考方法实施例中的相关描述，此处不再赘述。
处理单元810可以通过处理器或处理器相关电路实现。
发送单元820可以由发送器或发送器相关电路实现。
可选地，该通信装置800还可以包括接收单元，用于执行上述方法实施例中终端设备侧的接收步骤。该接收单元可以由接收器或接收器相关电路实现。
通信装置800中的发送单元820和接收单元可以集成为收发单元，本申请实施例对此不作限定。
本申请实施例还提供一种第一通信装置，该第一通信装置可以是终端设备也可以是芯片。该第一通信装置可以用于执行上述方法实施例中由终端设备所执行的动作。
当该第一通信装置为终端设备时，图9示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图9中，终端设备以手机作为例子。如图9所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，或处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图9中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的收发单元，将具有处理功能的处理器视为终端设备的处理单元。
如图9所示，终端设备包括收发单元901和处理单元902。收发单元902也可以称为收发器、收发机、收发装置等。处理单元901也可以称为处理器，处理单板，处理模块、处理装置等。可选的，存储器可以位于处理单元901之中，与可以独立于处理单元901之外(例如，在图9中，存储器独立于处理单元901之外)。可选的，可以将收发单元901中用于实现接收功能的器件视为接收单元，将收发单元901中用于实现发送功能的器件视为发送单元，即收发单元901包括接收单元和发送单元。收发单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送 单元有时也可以称为发射机、发射器或者发射电路等。
例如，在一种实现方式中，处理单元902，用于执行图3中的步骤S310，和/或处理单元902还用于执行本申请实施例中终端设备侧的其他处理步骤。收发单元901用于执行图3中的步骤S320，和/或收发单元901还用于执行本申请实施例中终端设备侧的其他收发步骤。
再例如，在另一种实现方式中，收发单元901用于执行图4中的步骤S404、或步骤S408、或步骤S411、或步骤S413中终端设备侧的发送操作，收发单元901用于执行图4中的步骤S414中终端设备侧接收操作，和/或收发单元901还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元902用于执行图4中终端设备侧的处理操作，例如，步骤S401、S402等其他处理步骤。
又例如，在另一种实现方式中，收发单元901用于执行图5中的步骤S504、或S507、或S511、或S513中终端设备侧的发送步骤，收发单元901还用于执行图5中的步骤S514中终端设备侧的接收步骤，和/或收发单元901还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元902用于执行图5中的终端设备侧的其他处理步骤。
又例如，在另一种实现方式中，收发单元901用于执行图6中的步骤S610中终端设备侧的发送步骤，收发单元901还用于执行图6中的步骤S630中终端设备侧的接收步骤，和/或收发单元901还用于执行本申请实施例中终端设备侧的其他收发步骤。处理单元902用于执行图6中步骤S620的处理步骤，和/或处理单元902的终端设备侧的其他处理步骤。
可以理解的是，上述包括收发单元和处理单元的终端设备可以不依赖于图9所示的结构。
当该第一通信装置为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
应理解，图9仅为示例而非限定。
可以理解是的，上述通信装置中各个单元/模块的操作或者实现可以进一步参考方法实施例中的相关描述，此处不再赘述。
本申请实施例还提供一种通信装置，该通信装置可以是网络设备也可以是芯片。例如，类似于图8的结构(将图8中的发送单元替换为收发单元)，该通信装置包括处理单元与收发单元。该处理单元用于执行上述方法实施例中网络设备侧的处理步骤，例如，生成终端设备侧的配置信息等。该收发单元用于执行上述方法实施例中网络设备侧的接收和发送步骤，例如接收终端设备发送的BFRQ消息，向终端设备发送BFR响应消息，或者向终端设备发送上行资源的配置信息。其中，该处理单元可以通过处理器或处理器相关电路实现。该收发单元可以由收发器或收发器相关电路实现。
本申请实施例还提供一种第二通信装置，该第二通信装置可以是网络设备也可以是芯片。该第二通信装置可以用于执行上述方法实施例中由网络设备所执行的动作。
当该第二通信装置为网络设备时，例如为基站。图10示出了一种简化的基站结构示意图。基站包括1001部分以及1002部分。1001部分主要用于射频信号的收发以及射频信号与基带信号的转换；1002部分主要用于基带处理，对基站进行控制等。1001部分通常可以称为收发单元、收发机、收发电路、或者收发器等。1002部分通常是基站的控制中心，通常可以称为处理单元，用于控制基站执行上述方法实施例中网络设备生成第一消 息的动作。具体可参见上述相关部分的描述。
可选地，存储器可以集成在处理单元之中，即集成在图10中所示的1002部分之中(如图10中所示)；或者，存储器也可以独立于处理单元之外，即独立于图10中所示的1002部分之外。
1001部分的收发单元，也可以称为收发机，或收发器等，其包括天线和射频单元，其中射频单元主要用于进行射频处理。可选的，可以将1001部分中用于实现接收功能的器件视为接收单元，将用于实现发送功能的器件视为发送单元，即1001部分包括接收单元和发送单元。接收单元也可以称为接收机、接收器、或接收电路等，发送单元可以称为发射机、发射器或者发射电路等。
1002部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器和一个或多个存储器，处理器用于读取和执行存储器中的程序以实现基带处理功能以及对基站的控制。若存在多个单板，各个单板之间可以互联以增加处理能力。作为一种可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个处理器。
例如，在一种实现方式中，收发单元用于执行图3中步骤320中网络设备侧的接收操作，和/或收发单元还用于执行本申请实施例中网络设备侧的其他收发步骤。处理单元用于执行本申请实施例中网络设备侧的其他处理步骤。
再例如，在另一种实现方式中，收发单元用于执行图4中的步骤S404、或步骤S408、或步骤S411、或步骤S413中网络设备侧的接收操作，收发单元还用于执行图4中步骤S414中网络设备侧的发送操作，和/或本申请中的其他步骤。处理单元用于执行本申请实施例中网络设备侧的处理步骤，例如生成终端设备的配置信息。
又例如，在另一种实现方式中，收发单元用于执行图5中的S504、或S507、或S511、或S513中网络设备侧的接收操作，收发单元还用于执行图5中步骤S514中网络设备侧的发送操作，和/或本申请中的其他步骤。处理单元用于执行本申请实施例中网络设备侧的处理步骤，例如生成终端设备的配置信息。
又例如，在另一种实现方式中，收发单元用于执行图6中的S610中网络设备侧的接收操作，收发单元还用于执行图6中步骤S630中网络设备侧的发送操作，和/或本申请中的其他步骤。处理单元用于执行本申请实施例中网络设备侧的处理步骤，例如生成终端设备的配置信息。
可以理解的是，上述包括收发单元和处理单元的网络设备可以不依赖于图10所示的结构。
当该第二通信装置为芯片时，该芯片包括收发单元和处理单元。其中，收发单元可以是输入输出电路、通信接口；处理单元为该芯片上集成的处理器或者微处理器或者集成电路。
可以理解是的，上述通信装置中各个模块的操作或者实现可以进一步参考方法实施例中的相关描述，此处不再赘述。
在本申请实施例中，终端设备或网络设备包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统， 例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
另外，本申请的各个方面或特征可以实现成方法、装置或使用标准编程和/或工程技术的制品。本申请中使用的术语“制品”涵盖可从任何计算机可读器件、载体或介质访问的计算机程序。例如，计算机可读介质可以包括，但不限于:磁存储器件(例如，硬盘、软盘或磁带等)，光盘(例如，压缩盘(compact disc，CD)、数字通用盘(digital versatile disc，DVD)等)，智能卡和闪存器件(例如，可擦写可编程只读存储器(erasable programmable read-only memory，EPROM)、卡、棒或钥匙驱动器等)。另外，本文描述的各种存储介质可代表用于存储信息的一个或多个设备和/或其它机器可读介质。术语“机器可读介质”可包括但不限于，无线信道和能够存储、包含和/或承载指令和/或数据的各种其它介质。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (32)

  1. 一种确定上行资源的方法，其特征在于，包括：
    从多个上行载波上的资源中确定目标上行资源；
    使用所述目标上行资源，向网络设备发送波束恢复请求。
  2. 根据权利要求1所述的方法，其特征在于，所述从多个上行载波上的资源中确定目标上行资源，包括：
    当所述多个上行载波中至少一个上行载波上具有非竞争资源时，将所述至少一个上行载波中一个上行载波上的非竞争资源确定为所述目标上行资源。
  3. 根据权利要求2所述的方法，其特征在于，所述多个上行载波包括当前小区的主上行载波与补充上行载波；
    所述将所述至少一个上行载波中一个上行载波上的非竞争资源确定为所述目标上行资源，包括：
    当所述至少一个上行载波中包括所述主上行载波时，将所述主上行载波上的非竞争资源确定为所述目标上行资源。
  4. 根据权利要求2所述的方法，其特征在于，所述多个上行载波包括当前小区的主上行载波与补充上行载波；
    所述将所述至少一个上行载波中一个上行载波上的非竞争资源确定为所述目标上行资源，包括：
    当所述至少一个上行载波中包括所述补充上行载波时，将所述补充上行载波上的非竞争资源确定为所述目标上行资源。
  5. 根据权利要求3或4所述的方法，其特征在于，所述将所述至少一个上行载波中一个上行载波上的非竞争资源确定为所述目标上行资源，包括：
    在所述当前小区的候选波束的质量超过门限的情况下，将所述主上行载波上的非竞争资源确定为所述目标上行资源；或
    在所述当前小区的候选波束的质量低于所述门限的情况下，将所述补充上行载波上的非竞争资源确定为所述目标上行资源。
  6. 根据权利要求3至5中任一项所述的方法，其特征在于，
    所述将所述主上行载波上的非竞争资源确定为所述目标上行资源，包括：在所述主上行载波上的波束失败恢复定时器未超时的情况下，将所述主上行载波上的非竞争资源确定为所述目标上行资源；或
    所述将所述补充上行载波上的非竞争资源确定为所述目标上行资源，包括：在所述辅助上行载波上的波束失败恢复定时器未超时的情况下，将所述辅助上行载波上的非竞争资源确定为所述目标上行资源。
  7. 根据权利要求1所述的方法，其特征在于，所述多个上行载波包括当前工作的主上行载波与补充上行载波；
    所述从多个上行载波上的资源中确定目标上行资源，包括：
    当所述多个上行载波上无可用的非竞争资源时，将所述补充上行载波上的竞争资源确定为所述目标上行资源。
  8. 根据权利要求1所述的方法，其特征在于，所述多个上行载波包括当前主小区的主上行载波与补充上行载波，以及辅小区的上行载波；
    所述从多个上行载波上的资源中确定目标上行资源，包括：
    当所述主小区的主上行载波上无可用的非竞争资源时，将所述辅小区的上行载波上的非竞争资源确定为所述目标上行资源；或
    当所述主小区的主上行载波与补充上行载波均无可用的资源时，将所述辅小区的上行载波上的资源确定为所述目标上行资源。
  9. 根据权利要求1所述的方法，其特征在于，所述从多个上行载波上的资源中确定目标上行资源，包括：
    分别根据所述多个上行载波上的资源关联的波束属性，从所述多个上行载波中选择目标上行载波；
    将所述目标上行载波上的资源确定为所述目标上行资源。
  10. 根据权利要求9所述的方法，其特征在于，所述多个上行载波包括第一载波与第二载波，所述第一载波上的资源关联信道状态信息参考信号CSI-RS，所述第二载波上的资源关联同步信号块SSB；
    所述从所述多个上行载波中选择目标上行载波，包括：
    将所述第一载波确定为所述目标上行载波。
  11. 根据权利要求9所述的方法，其特征在于，所述多个上行载波包括第三载波与第四载波，所述第三载波上的资源关联的候选波束的数量小于或等于所述第四载波上的资源所关联的候选波束的数量；
    所述从所述多个上行载波中选择目标上行载波，包括：
    将所述第三载波确定为所述目标上行载波。
  12. 根据权利要求1所述的方法，其特征在于，所述从多个上行载波上确定目标上行资源，包括：
    根据预设优先级信息，从所述多个上行载波中选择目标上行载波，所述预设优先级信息用于指示所述多个上行载波上的资源使用先后顺序；
    在所述目标上行载波上确定所述目标上行资源。
  13. 根据权利要求1所述的方法，其特征在于，所述多个上行载波包括主小区的上行载波与辅小区的上行载波；
    所述从多个上行载波上确定目标上行资源，包括：
    根据所述主小区的候选波束的质量和所述辅小区的候选波束的质量，将所述主小区的上行载波或所述辅小区的上行载波上的资源作为所述目标上行载波。
  14. 根据权利要求13所述的方法，其特征在于，所述将所述主小区的上行载波或所述辅小区的上行载波上的资源作为所述目标上行载波，包括：
    当所述主小区的候选波束的参考信号接收功率RSRP与预设偏移量之和大于或等于所述辅小区的候选波束的RSRP时，将所述主小区的上行载波作为所述目标上行载波。
  15. 根据权利要求1所述的方法，其特征在于，所述目标上行资源为竞争资源；
    所述方法还包括：
    从所述网络设备接收上行载波与下行载波的关联关系；
    使用所述目标上行资源所在的上行载波所关联的下行载波，接收所述网络设备发送的 波束恢复响应消息。
  16. 一种通信装置，其特征在于，包括：
    处理单元，用于从多个上行载波上的资源中确定目标上行资源；
    收发单元，用于使用所述处理单元确定的所述目标上行资源，向网络设备发送波束恢复请求。
  17. 根据权利要求16所述的通信装置，其特征在于，所述处理单元用于，当所述多个上行载波中至少一个上行载波上具有非竞争资源时，将所述至少一个上行载波中一个上行载波上的非竞争资源确定为所述目标上行资源。
  18. 根据权利要求17所述的通信装置，其特征在于，所述多个上行载波包括当前小区的主上行载波与补充上行载波；
    所述处理单元用于，当所述至少一个上行载波中包括所述主上行载波时，将所述主上行载波上的非竞争资源确定为所述目标上行资源。
  19. 根据权利要求17所述的通信装置，其特征在于，所述多个上行载波包括当前小区的主上行载波与补充上行载波；
    所述处理单元用于，当所述至少一个上行载波中包括所述补充上行载波时，将所述补充上行载波上的非竞争资源确定为所述目标上行资源。
  20. 根据权利要求18或19所述的通信装置，其特征在于，所述处理单元用于：
    在所述当前小区的候选波束的质量超过门限的情况下，将所述主上行载波上的非竞争资源确定为所述目标上行资源；或
    在所述当前小区的候选波束的质量低于所述门限的情况下，将所述补充上行载波上的非竞争资源确定为所述目标上行资源。
  21. 根据权利要求18至20中任一项所述的通信装置，其特征在于，所述处理单元用于：
    在所述主上行载波上的波束失败恢复定时器未超时的情况下，将所述主上行载波上的非竞争资源确定为所述目标上行资源；或
    在所述辅助上行载波上的波束失败恢复定时器未超时的情况下，将所述辅助上行载波上的非竞争资源确定为所述目标上行资源。
  22. 根据权利要求16所述的通信装置，其特征在于，所述多个上行载波包括当前工作的主上行载波与补充上行载波；
    所述处理单元用于，当所述多个上行载波上无可用的非竞争资源时，将所述补充上行载波上的竞争资源确定为所述目标上行资源。
  23. 根据权利要求16所述的通信装置，其特征在于，所述多个上行载波包括当前主小区的主上行载波与补充上行载波，以及辅小区的上行载波；
    所述处理单元用于：
    当所述主小区的主上行载波上无可用的非竞争资源时，将所述辅小区的上行载波上的非竞争资源确定为所述目标上行资源；或
    当所述主小区的主上行载波与补充上行载波均无可用的资源时，将所述辅小区的上行载波上的资源确定为所述目标上行资源。
  24. 根据权利要求16所述的通信装置，其特征在于，所述处理单元用于，分别根据所述多个上行载波上的资源关联的波束属性，从所述多个上行载波中选择目标上行载波； 将所述目标上行载波上的资源确定为所述目标上行资源。
  25. 根据权利要求24所述的通信装置，其特征在于，所述多个上行载波包括第一载波与第二载波，所述第一载波上的资源关联信道状态信息参考信号CSI-RS，所述第二载波上的资源关联同步信号块SSB；
    所述处理单元用于，将所述第一载波确定为所述目标上行载波。
  26. 根据权利要求24所述的通信装置，其特征在于，所述多个上行载波包括第三载波与第四载波，所述第三载波上的资源关联的候选波束的数量小于或等于所述第四载波上的资源所关联的候选波束的数量；
    所述处理单元用于，将所述第三载波确定为所述目标上行载波。
  27. 根据权利要求16所述的通信装置，其特征在于，所述处理单元用于，根据预设优先级信息，从所述多个上行载波中选择目标上行载波，所述预设优先级信息用于指示所述多个上行载波上的资源使用先后顺序；在所述目标上行载波上确定所述目标上行资源。
  28. 根据权利要求16所述的通信装置，其特征在于，所述多个上行载波包括主小区的上行载波与辅小区的上行载波；
    所述处理单元用于，根据所述主小区的候选波束的质量和所述辅小区的候选波束的质量，将所述主小区的上行载波或所述辅小区的上行载波上的资源作为所述目标上行载波。
  29. 根据权利要求28所述的通信装置，其特征在于，所述处理单元用于，当所述主小区的候选波束的参考信号接收功率RSRP与预设偏移量之和大于或等于所述辅小区的候选波束的RSRP时，将所述主小区的上行载波作为所述目标上行载波。
  30. 根据权利要求16所述的通信装置，其特征在于，所述目标上行资源为竞争资源；
    所述收发单元还用于，从所述网络设备接收上行载波与下行载波的关联关系；使用所述目标上行资源所在的上行载波所关联的下行载波，接收所述网络设备发送的波束恢复响应消息。
  31. 一种通信装置，其特征在于，包括存储器和处理器，所述存储器用于存储指令，所述处理器用于执行所述存储器存储的指令，并且对所述存储器中存储的指令的执行使得所述处理器执行如权利要求1至15中任一项所述的方法。
  32. 一种计算机存储介质，其特征在于，其上存储有计算机程序，所述计算机程序被计算机执行时使得，所述计算机执行如权利要求1至15中任一项所述的方法。
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