WO2023040582A1 - 一种动态指示ecp时隙的方法、基站及存储介质 - Google Patents
一种动态指示ecp时隙的方法、基站及存储介质 Download PDFInfo
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- WO2023040582A1 WO2023040582A1 PCT/CN2022/113693 CN2022113693W WO2023040582A1 WO 2023040582 A1 WO2023040582 A1 WO 2023040582A1 CN 2022113693 W CN2022113693 W CN 2022113693W WO 2023040582 A1 WO2023040582 A1 WO 2023040582A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- 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
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- 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
- H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
Definitions
- the invention relates to the communication field, in particular to a method for dynamically indicating an ECP time slot, a base station and a storage medium.
- a single frequency network (single frequency network, SFN) is usually used to improve the transmission efficiency of broadcast and multicast services.
- Cyclic prefix Cyclic prefix
- CP Cyclic prefix
- the types include extended CP (Extend Cyclic prefix, ECP) and normal CP (Normal Cyclic Prefix, NCP).
- ECP Extend Cyclic prefix
- NCP Normal Cyclic Prefix
- the time domain length of ECP is greater than that of NCP.
- the time slot or symbol of ECP is usually called ECP time slot.
- the slots or symbols of the NCP are commonly referred to as NCP slots.
- the ECP time slot is called a multicast/multicast single frequency network transmission area (Multimedia Broadcast multicast service Single Frequency Network Transmission area, MBSFN) subframe .
- MBSFN Multimedia Broadcast multicast service Single Frequency Network Transmission area
- the MBSFN subframe configured by a system broadcast message is used. This configuration method is a semi-static configuration, and the configuration of the MBSFN subframe is indicated in units of 10 ms (1 radio frame).
- New Radio, NR New Radio
- BWP Bandwidth Part
- the present invention provides a method for dynamically indicating an ECP time slot, a base station and a storage medium to solve the above-mentioned technical problems existing in the prior art.
- the technical solution of a method for dynamically indicating the ECP time slot is as follows:
- the base station generates dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- the base station sends the dynamic signaling to the terminal.
- the dynamic signaling includes the DCI
- the base station generates dynamic signaling that dynamically indicates the ECP time slot, including:
- a possible implementation manner, generating DCI directly indicating the PDSCH where the ECP time slot is located includes:
- the base station indicates the ECP time slot in a preset indication field of the DCI; wherein, the preset indication field occupies 1 bit.
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- generating the DCI indirectly indicating the ECP time slot includes:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the inclusion relationship is used to indicate scheduling ECP symbols or NCP symbols;
- a possible implementation manner, generating DCI directly indicating the PDSCH where the ECP time slot is located includes:
- the base station adds a CP type symbol indicating a scheduling symbol to the TDRA table configuration item; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- the base station determines the corresponding index from the TDRA table according to the start and end positions of the time slot where the PDSCH is located;
- the base station indicates the index in the TDRA indication field of the DCI.
- the base station generates dynamic signaling that dynamically indicates the ECP time slot, including:
- the base station adds information related to the ECP symbol in the slot format table
- the base station generates the SFI of the ECP time slot based on the time slot format table
- the SFI is carried in the DCI to obtain the dynamic instruction.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- a possible implementation manner, carrying the SFI in the DCI, and after obtaining the dynamic instruction further includes:
- the base station scrambles the DCI with a specified identifier; wherein the specified identifier is used to scramble the DCI indicating the ECP time slot;
- the base station sends the scrambled DCI to the terminal.
- an embodiment of the present invention provides a method for dynamically indicating an ECP time slot, including:
- the terminal receives dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- the terminal obtains time domain resource information corresponding to the ECP time slot from the dynamic signaling.
- the dynamic signaling includes the DCI
- the terminal obtains time domain resource information corresponding to the ECP time slot from the dynamic signaling, including:
- the terminal obtains the time domain resource information corresponding to the ECP time slot from the DCI directly indicating the PDSCH where the ECP time slot is located;
- the terminal obtains the time domain resource information corresponding to the ECP time slot from the DCI indirectly indicating the ECP time slot.
- the terminal acquires the time domain resource information corresponding to the ECP time slot from the DCI indirectly indicating the ECP time slot, including:
- the terminal reads the MCS index, and if the MCS index is smaller than the MCS threshold, obtains the time domain resource corresponding to the ECP time slot; wherein, the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot;
- the terminal acquires the time domain resource corresponding to the ECP time slot based on the inclusion relationship between the preset frequency domain resource block and the frequency domain resource range indicated by the FDRA information;
- the terminal acquires the time-domain resource corresponding to the ECP time slot based on the size relationship between the preset frequency threshold and the end frequency-domain position of the frequency-domain resource range indicated by the FDRA information.
- the terminal obtains the time domain resource corresponding to the ECP time slot from the DCI directly indicating the PDSCH where the ECP time slot is located, including:
- the terminal acquires the time domain resource information corresponding to the ECP time slot from the preset indication field of the DCI; wherein the preset indication field occupies 1 bit.
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the terminal obtains the time domain resource corresponding to the ECP time slot from the DCI directly indicating the PDSCH where the ECP time slot is located, including:
- the time-domain resource information is determined based on the TDRA index and the corresponding TDRA table.
- determining the time domain resource information based on the TDRA index and the corresponding TDRA table includes:
- the TDRA table uses ECP symbols as time units, determine the time domain resource information according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table;
- the TDRA table uses the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and use the NCP symbol as the time unit from the TDRA table, and store the second SLIV information It is converted into third SLIV information with ECP symbols as time units, and the time domain resource information is determined according to the third SLIV information.
- converting the second SLIV information using NCP symbols as a time unit into the third SLIV information using ECP symbols as a time unit includes:
- the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- a possible implementation manner, converting the second SLIV information into third SLIV information with ECP symbols as time units includes:
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is The symbol length of the NCP
- ECP_duration is the symbol length of the ECP
- delta is the CP increment
- ceil() is a function of rounding up
- floor() is a function of rounding down.
- converting the second SLIV information into third SLIV information with ECP symbols as time units includes at least one of the following steps:
- start symbol of the second SLIV information When the start symbol of the second SLIV information is less than or equal to 6, use the start symbol of the second SLIV information as the start symbol of the third SLIV information;
- the start symbol of the second SLIV information is greater than or equal to 7, the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information;
- the difference between the length of the second SLIV information and 2 is used as the length of the third SLIV information.
- the dynamic instruction includes SFI in the DCI
- the terminal receives dynamic signaling that dynamically indicates the ECP time slot, including:
- the terminal acquires the indication information of the time slot format from the SFI; wherein the indication information of the time slot format is generated according to the time slot format table of the time slot format including the ECP symbol.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the terminal before the terminal obtains the indication information of the time slot format from the SFI, it further includes:
- the terminal uses a designated identification number to detect DCI; wherein the designated identification number is used to scramble the DCI indicating the ECP time slot;
- the embodiment of the present invention also provides a base station, including a memory, a transceiver, and a processor:
- the memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:
- the dynamic signaling includes the DCI, and the processor is further configured to:
- the processor is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the processor is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the inclusion relationship is used to indicate scheduling ECP symbols or NCP symbols;
- the processor is further configured to:
- CP type symbol indicating a scheduling symbol in the configuration item of the TDRA table; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- the index is indicated in the TDRA indication field of the DCI.
- the processor is further configured to:
- the SFI is carried in the DCI to obtain the dynamic instruction.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the processor is further configured to:
- an embodiment of the present invention provides a terminal, including a memory, a transceiver, and a processor:
- the memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:
- Receive dynamic signaling that dynamically indicates an ECP time slot; wherein the ECP time slot includes at least one ECP symbol;
- the dynamic signaling includes DCI
- the processor is further configured to:
- the processor is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the time domain resource corresponding to the ECP time slot is acquired.
- the processor is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the processor is further configured to:
- the time-domain resource information is determined based on the TDRA index and the corresponding TDRA table.
- the processor is further configured to:
- the TDRA table uses ECP symbols as time units, determine the time domain resource information according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table;
- the TDRA table uses the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and use the NCP symbol as the time unit from the TDRA table, and store the second SLIV information It is converted into third SLIV information with ECP symbols as time units, and the time domain resource information is determined according to the third SLIV information.
- the processor is further configured to:
- the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- the processor is further configured to:
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is The symbol length of the NCP
- ECP_duration is the symbol length of the ECP
- delta is the CP increment
- ceil() is a function of rounding up
- floor() is a function of rounding down.
- the processor is further configured to:
- start symbol of the second SLIV information When the start symbol of the second SLIV information is less than or equal to 6, use the start symbol of the second SLIV information as the start symbol of the third SLIV information;
- the start symbol of the second SLIV information is greater than or equal to 7, the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information;
- the difference between the length of the second SLIV information and 2 is used as the length of the third SLIV information.
- the dynamic signaling includes SFI in DCI
- the processor is further configured to:
- the indication information of the slot format is acquired from the SFI; wherein, the indication information of the slot format is generated according to a slot format table including the slot format of the ECP symbol.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the processor is further configured to:
- the DCI Before obtaining the indication information of the time slot format from the SFI, detect the DCI with a designated identification number; wherein, the designated identification number is used to scramble the DCI indicating the ECP time slot;
- the embodiment of the present invention further provides a base station, including:
- a generating unit configured to generate dynamic signaling for dynamically indicating an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- a sending unit configured to send the dynamic signaling to the terminal.
- the dynamic signaling includes the DCI
- the generating unit is further configured to:
- the generating unit is also used for:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the generating unit is also used for:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the inclusion relationship is used to indicate scheduling ECP symbols or NCP symbols;
- the generating unit is also used for:
- CP type symbol indicating a scheduling symbol in the configuration item of the TDRA table; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- the index is indicated in the TDRA indication field of the DCI.
- the generating unit is also used for:
- the SFI is carried in the DCI to obtain the dynamic instruction.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the generating unit is also used for:
- an embodiment of the present invention further provides a terminal, including:
- a receiving unit configured to receive dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- the obtaining unit is configured to obtain the time-domain resource information corresponding to the ECP time slot from the dynamic signaling.
- the dynamic signaling includes the DCI
- the acquiring unit is further configured to:
- the acquisition unit is also used for:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the time domain resource corresponding to the ECP time slot is acquired.
- the acquisition unit is also used for:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the acquisition unit is also used for:
- the time-domain resource information is determined based on the TDRA index and the corresponding TDRA table.
- the acquisition unit is also used for:
- the TDRA table uses ECP symbols as time units, determine the time domain resource information according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table;
- the TDRA table uses the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and take the NCP symbol as the time unit from the TDRA table, and store the second SLIV information It is converted into third SLIV information with ECP symbols as time units, and the time domain resource information is determined according to the third SLIV information.
- the acquisition unit is also used for:
- the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- the acquisition unit is also used for:
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is The symbol length of the NCP
- ECP_duration is the symbol length of the ECP
- delta is the CP increment
- ceil() is a function of rounding up
- floor() is a function of rounding down.
- the acquisition unit is also used for:
- start symbol of the second SLIV information When the start symbol of the second SLIV information is less than or equal to 6, use the start symbol of the second SLIV information as the start symbol of the third SLIV information;
- the start symbol of the second SLIV information is greater than or equal to 7, the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information;
- the difference between the length of the second SLIV information and 2 is used as the length of the third SLIV information.
- the dynamic signaling includes SFI in DCI
- the receiving unit is further configured to:
- the indication information of the slot format is acquired from the SFI; wherein, the indication information of the slot format is generated according to a slot format table including the slot format of the ECP symbol.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the receiving unit is also used for:
- an embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method described in the first aspect or the second aspect. The method described in the two aspects.
- the embodiments of the present invention have at least the following technical effects:
- the base station generates dynamic signaling that dynamically indicates an ECP time slot including at least one ECP symbol, and sends the dynamic signaling to the terminal, so that the base station can dynamically and flexibly schedule the data corresponding to the ECP time slot , on the basis of satisfying the performance of broadcast and multicast data transmission, the flexibility of resource usage is improved, and the utilization rate of resources is maximized.
- Fig. 1 is a schematic diagram of the duration of NCP and ECP in a time slot in the prior art
- Fig. 2 is a schematic diagram of sampling points of NCP and ECP in a time slot in the prior art
- FIG. 3 is a schematic diagram of a time slot format combination in the prior art
- FIG. 4 is a schematic diagram of configuration of an MBSFN subframe in an LTE system
- FIG. 5 is a flow chart of a method for dynamically indicating an ECP time slot at the base station side provided by an embodiment of the present invention
- FIG. 6 is a schematic diagram of the inclusion relationship between the first FDRA and the preset frequency domain resource block provided by the embodiment of the present invention.
- FIG. 7 is a schematic diagram of the relationship between the second FDRA and the preset frequency threshold provided by the embodiment of the present invention.
- FIG. 8 is a flow chart of a method for dynamically indicating an ECP time slot on the terminal side provided by an embodiment of the present invention.
- FIG. 9 is a schematic diagram of sampling point positions corresponding to NCP symbols and ECP symbols in a time slot provided by an embodiment of the present invention.
- FIG. 10 is a schematic structural diagram of a base station provided by an embodiment of the present invention.
- FIG. 11 is a schematic structural diagram of a terminal provided by an embodiment of the present invention.
- FIG. 12 is a schematic structural diagram of another base station provided by an embodiment of the present invention.
- FIG. 13 is a schematic structural diagram of another terminal provided by an embodiment of the present invention.
- the applicable system may be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet Wireless business (general packet radio service, GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G NR system, etc.
- GSM global system of mobile communication
- CDMA code division multiple access
- WCDMA wideband code division multiple access
- GPRS general packet Wireless business
- long term evolution long term evolution
- LTE long term evolution
- LTE frequency division duplex frequency division duplex
- FDD frequency division duplex
- TDD time division duplex
- LTE-A Long term evolution advanced
- UMTS universal mobile telecommunications
- the terminal device involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
- the name of the terminal equipment may be different.
- the terminal equipment may be called User Equipment (User Equipment, UE).
- the wireless terminal equipment can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal equipment can be a mobile terminal equipment, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
- a mobile terminal equipment such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network.
- PCS Personal Communication Service
- SIP Session Initiated Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- Wireless terminal equipment can also be called system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point , remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), and user device (user device), which are not limited in this embodiment of the application.
- the network device involved in the embodiment of the present application may be a base station, and the base station may include multiple cells that provide services for the terminal.
- the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names.
- the network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network.
- IP Internet Protocol
- Network devices may also coordinate attribute management for the air interface.
- the network equipment involved in the embodiment of the present application may be a network equipment (Base Transceiver Station, BTS) in GSM or CDMA, may also be a network equipment (NodeB) in WCDMA, and may also be an evolved network equipment in an LTE system (evolutional Node B, eNB or e-NodeB), 5G base station (gNB) in the 5G network architecture (next generation system), can also be a home evolved base station (Home evolved Node B, HeNB), relay node (relay node) , a home base station (femto), a pico base station (pico), etc., are not limited in this embodiment of the present application.
- a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.
- NR technology adopts Orthogonal Frequency Division Multiplexing (OFDM) technology.
- OFDM Orthogonal Frequency Division Multiplexing
- FIG. 1 is a schematic diagram of the duration of NCP and ECP in one time slot in the prior art
- FIG. 2 is a schematic diagram of sampling points of NCP and ECP in one time slot in the prior art.
- the time slot inserted into the NCP in the time slot is referred to as the NCP time slot, and the symbols in the NCP time slot are referred to as NCP symbols;
- the time slot inserted into the ECP in the time slot is referred to as the ECP time slot, and the ECP The symbols in the time slot are called ECP symbols.
- the base station When the base station allocates resources for the terminal, it needs to indicate to the terminal the time slot format adopted by the resource. Please refer to Table 1 for the time slot format table with the length of the NCP symbol.
- D represents a downlink NCP symbol
- U represents an uplink NCP symbol
- F represents a flexible NCP symbol.
- the base station When the base station indicates the slot format to the terminal, it usually uses the slot format indication information (Slot Format Indication, SFI) to indicate the slot format combination, and the SFI is carried in the downlink control information (Downlink Control Information, DCI) and sent to the terminal.
- SFI Slot Format Indication
- DCI Downlink Control Information
- DCI in format 2_0 is scrambled with SFI-RNTI.
- FIG. 3 is a schematic diagram of time slot format combination in the prior art.
- each time slot combination includes 10 time slots.
- Slot format combination 0 is a full downlink time slot, and the corresponding slot format index in the slot format table (Table 1) is 0.
- Table 1 When the slot format information (ie slot format combination) in DCI format 2_0 is 0 , indicating that the indicated 10 time slots are all downlink symbols.
- Slot format combination 1 is a full uplink time slot, and the corresponding slot format index in the slot format table (Table 1) is 1.
- Table 1 When the slot format information in DCI format 2_0 is 1, it means 1 indicated In the time slot, all are uplink symbols.
- Slot format combination 2 includes some uplink time slots, some downlink time slots, and one time slot containing both uplink and downlink symbols.
- the corresponding slot format indexes in the slot format table (Table 1) are 0, 1 and 45.
- the slot format information in DCI format 2_0 is 2, it means that the first 6 slots are downlink, the last 3 slots are uplink, and the seventh slot contains both uplink symbols and downlink symbols.
- the MBSFN subframe that is, the ECP time slot configured by the system broadcast message is used.
- This method belongs to semi-static configuration, and the MBSFN subframe configuration instruction is performed in units of 10ms (1 wireless frame).
- the scheme in which the indication method adopts a bitmap is shown in FIG. 4 , and FIG. 4 is a schematic diagram of the configuration of the MBSFN subframe in the LTE system.
- Subframes #0 and #5 contain initial access signals, which are NCP by default and do not need to be indicated.
- Subframes #4 and #9 are used for unicast scheduling, the default is NCP, and no indication is required.
- 6 bits indicate whether the 6 subframes are ECP, where the first bit indicates subframe #1, the second bit indicates subframe #2, the third bit indicates subframe #3, and the fourth bit Indicates subframe #6, the fifth bit indicates subframe #7, the sixth bit indicates subframe #8, 1 in each bit indicates ECP, and 0 indicates NCP.
- embodiments of the present application provide a method for dynamically indicating an ECP time slot, a base station, and a storage medium method and device.
- the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
- an embodiment of the present invention provides a method for dynamically indicating an ECP time slot, and the processing procedure of the method is as follows.
- Step 501 The base station generates dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- Step 502 the base station sends dynamic signaling to the terminal.
- the base station generates dynamic signaling that dynamically indicates an ECP time slot including at least one ECP symbol, and sends the dynamic signaling to the terminal, so that the base station can dynamically and flexibly schedule the data corresponding to the ECP time slot , on the basis of satisfying the performance of broadcast and multicast data transmission, the flexibility of resource usage is improved, and the utilization rate of resources is maximized.
- the base station generates dynamic signaling that dynamically indicates the ECP time slot, which may be generated based on DCI scheduling a physical downlink shared channel (PDSCH), and may be specifically implemented in the following two ways:
- the first method generating DCI directly indicating the PDSCH where the ECP time slot is located; wherein, the dynamic signaling includes the DCI.
- the second type generating DCI that indirectly indicates the ECP time slot.
- For the first type generate a DCI that directly indicates the PDSCH where the ECP slot is located, which can be indicated by using 1-bit information in the DCI, or by adding a CP type symbol in the Time Domain Resource Allocation (TDRA) configuration item instruct.
- TDRA Time Domain Resource Allocation
- Using 1-bit information indication in the DCI may mean that the base station indicates the ECP time slot in the preset indication field of the DCI; wherein, the preset indication field occupies 1 bit.
- the above preset indication domains include:
- the newly added indication field in DCI is used to indicate the CP type symbol; where the CP type symbol includes NCP symbol or/and ECP symbol;
- a reinterpreted or defined indication field in the DCI is used to indicate the CP type symbol.
- CP type symbol indication 1 bit as a newly added indication field for CP type symbol indication.
- the CP type symbol indication 1
- NCP For example, when the CP type symbol indicates When it is 0, it means that the scheduled data is ECP.
- the existing indication field occupying 1 bit in the DCI is reinterpreted or defined, and the reinterpreted and defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indication field may be a bit field of uplink control channel power control; or indication information used to indicate uplink or downlink scheduling signaling.
- the time unit of the TDRA table is the NCP symbol.
- the CP type symbol indicates the ECP symbol
- the DCI indicates the SLIV information of the NCP symbol
- the terminal needs to convert the SLIV of the NCP symbol into the ECP symbol. SLIV can correctly obtain the corresponding time domain information.
- the terminal uses the corresponding SILV information in Table 2 to determine the time domain information.
- the terminal needs to convert the SLIV information of the ECP symbol to the SLIV of the NCP symbol After the information is determined, the corresponding time domain information will be specifically introduced in the subsequent terminal side, and will not be repeated here.
- the base station can also add the TDRA table of the ECP symbol when configuring the broadcast and multicast information.
- the CP type symbol indicates the ECP symbol
- the SLIV information of the ECP symbol can be indicated in the DCI, and the terminal can directly use the ECP symbol.
- the SLIV information determines the corresponding time domain information.
- Table 3 the TDRA table of the ECP symbol added for the base station.
- the index value indicated by the base station scheduling should not exceed the maximum index value of the corresponding TDRA table.
- the base station adds a CP type symbol indicating the scheduling symbol in the configuration item of the TDRA table; wherein, the CP type symbol includes NCP symbols or/and ECP symbols; The location determines the corresponding index from the TDRA table; the base station indicates the index in the TDRA indication field of the DCI.
- a CP type symbol is added.
- the index is 0, it means that the start symbol of the time slot where the PDSCH is scheduled is 0, the length is 14, and the scheduling symbol is an NCP symbol;
- the index is 4, it means that the start symbol of the time slot where the PDSCH is scheduled is 2, the length is 10, and the scheduling symbol is the ECP symbol.
- the base station writes index 5 in Table 4 into the TDRA indication field of the DCI, and sends the DCI to the terminal.
- the terminal can determine the corresponding time domain information as the time when the PDSCH is scheduled according to the index 5 in the TDRA indication field of the DCI.
- the start symbol of the slot is 0, the length is 12, and the scheduling symbol is the ECP symbol.
- the base station can dynamically and flexibly schedule the data corresponding to the ECP time slot according to the actual demand of service data;
- the service data suddenly increases, if too many MBSFN subframes are configured, resources will be wasted, which will affect the real-time transmission of unicast services.
- too few MBSFN subframes are configured, the transmission delay of MBS data will be increased. Reduce user experience. Therefore, the above-mentioned solution of the present application can effectively improve transmission efficiency and reduce transmission delay, and since the ECP time slot is indicated at the symbol level instead of at the time slot level as in the LTE system, it can Further improve resource utilization.
- DCI that indirectly indicates the ECP time slot can be generated in the following ways:
- the first way to generate a DCI that indirectly indicates an ECP time slot generate an MCS index that is greater than or equal to the modulation and coding strategy (Modulation and Coding Scheme, MCS) threshold, and carry the MCS index in the DCI; where the MCS threshold is to distinguish ECP Threshold for slots and NCP slots.
- MCS Modulation and Coding Scheme
- the base station adds a CP type symbol in the multicast data MCS index table to indicate the CP corresponding to the MCS index.
- the base station and the terminal agree: when the MCS index indicated in the DCI is less than an MCS threshold (assumed to be 7), the scheduled CP type symbol is an NCP symbol, otherwise it is an ECP symbol.
- the base station can use the modulation and coding scheme corresponding to the MCS index greater than or equal to 7 to transmit data, so the base station generates an MCS index greater than or equal to 7 (as shown in Table 5 in 16), and carry the MCS index (16) in the DCI, and send the DCI to the terminal, and the terminal can not only determine that the MCS corresponding to the MCS index (16) is used for modulation and coding according to the MCS index (16) carried in the DCI , it can also be determined that the ECP symbol is used for scheduling the broadcast and multicast data.
- the value of the MCS index carried in the above DCI is smaller than the maximum MCS index value in the multicast data MCS index table.
- the signaling message may also be used to indicate to the terminal the ranges of the MCS indexes corresponding to the NCP symbols and the ECP symbols respectively.
- MCS index 0 to MCS index 6 in Table 5 correspond to NCP symbols
- MCS index 7 to MCS index 28 correspond to ECP symbols through signaling messages, so that the multicast data MCS index table does not need to be sent to the terminal.
- the second way of generating the DCI indirectly indicating the ECP time slot based on the inclusion relationship between the preset frequency domain resource block and the first frequency domain resource assignment (Frequency domain resource assignment, FDRA), generate the DCI carrying the first FDRA; wherein, The containment relationship is used to indicate scheduling ECP symbols or NCP symbols.
- the base station may pre-configure a preset frequency domain resource block, and the preset frequency domain resource block may include at least one frequency domain resource unit.
- the corresponding time Domain resources use ECP notation, otherwise NCP notation.
- the corresponding time-domain resource uses NCP symbols, otherwise, uses ECP symbols.
- FIG. 6 is a schematic diagram of the inclusion relationship between the first FDRA and the preset frequency domain resource blocks provided by the embodiment of the present invention.
- the base station and the terminal agree that: when the first FDRA includes a preset frequency domain resource block, the corresponding time domain resource uses ECP symbols, otherwise, uses NCP symbols.
- the schedulable bandwidth of the base station is 0 to 120, that is, the start position of BWP is 0, and the end position of BWP is 120. resource blocks.
- the PRBs scheduled by DCI-1, the PRBs scheduled by DCI-2, and the PRBs scheduled by DIC-3 can all be referred to as the first FDRA.
- the frequency range indicated by the FDRA of the PDSCH scheduled by DCI-1 is 0 to 100 PRBs, including preset frequency domain resource blocks (ref-PRB1 includes 80 to 85, resource blocks from 80 to 85 have a total of 5 PRBs ), after the base station carries the first FDRA including the preset frequency domain resource block in the DCI and sends it to the terminal, the terminal can determine that the corresponding time domain resource uses the ECP symbol.
- the frequency domain range indicated by the FDRA is 0 to 60 PRB, and does not include the preset frequency domain resource block (ref-PRB1).
- the terminal can determine that the NCP symbol is used for the corresponding time domain resource.
- the frequency range indicated by the FDRA is 70 to 120 PRB, including the preset frequency domain resource block (ref-PRB1).
- the terminal can determine that the corresponding time domain resource uses the ECP symbol.
- the third method of generating DCI indirectly indicating the ECP time slot based on the size relationship between the preset frequency threshold and the end frequency domain position of the second FDRA, generate the DCI carrying the second FDRA; where the size relationship is used to indicate the scheduling of ECP symbols or NCP symbols.
- the base station can configure a preset frequency threshold.
- the corresponding scheduled time domain resources use ECP symbols, otherwise, NCP symbols are used.
- the corresponding scheduled time domain resources use NCP symbols, otherwise, use ECP symbols.
- FIG. 7 is a schematic diagram of the relationship between the second FDRA and the preset frequency threshold provided by the embodiment of the present invention.
- the time domain resources allocated by the base station to the terminal use ECP symbols, the BWP that the base station can call is 0 to 120, and the preset frequency threshold (shown as Ref-PRB2 in Figure 7) is 65, so the base station is allocating frequency domain resources for the terminal , the allocation is that the end frequency domain position of the first FDRA is greater than or equal to 65, as shown in the PRBs scheduled by DCI-1 and PRBs scheduled by DCI-3 in Figure 7; if the time domain resources allocated by the base station to the terminal use NCP symbols, when the base station allocates frequency domain resources for the terminal, the allocation is that the end frequency domain position of the first FDRA is less than 65, as shown in the PRB scheduled by DCI-2 in FIG. 7 .
- the bits occupied solely for indicating the CP type symbol can be saved, and the signaling overhead can be saved.
- the base station generates dynamic signaling that dynamically indicates the ECP time slot, which may also be implemented in the following manner:
- the base station adds information related to the ECP symbol in the slot format table; the base station generates the SFI of the ECP slot based on the slot format table; carries the SFI in the DCI to obtain a dynamic instruction.
- D represents the downlink NCP symbol
- U represents the uplink NCP symbol
- F represents the flexible NCP symbol
- E represents the downlink ECP symbol.
- the base station can add an indication (E) of the ECP symbol in lines 56 to 59 of the time slot format table, and indicate the used time slot format through SFI.
- E an indication of the ECP symbol in lines 56 to 59 of the time slot format table
- all the symbols indicated are E, indicating that all the symbols in the entire time slot are ECP symbols, that is, 12 ECP symbols are included in the time length of 14 NCP symbols, so the time corresponding to the 56th line
- the slot format is a downlink slot with all ECP symbols.
- the first 7 symbols are D symbols
- the last 7 symbols are E. Since the slot format table in Table 6 uses NCP symbols as the time unit, the last 7 symbols E indicates a symbol containing 6 ECPs. That is, the time slot format corresponding to line 57 indicates that the first half of a time slot uses downlink NCP symbols, and the second half uses downlink ECP symbols.
- the first 7 symbols E indicate that it contains 6 ECP symbols, and the last 7 symbols are D, so the slot format corresponding to the 58th row indicates: the first half of a slot Downlink ECP symbols are used, and downlink NCP symbols are used in the second half.
- the first 6 symbols are E, including 5 ECP symbols, the last 6 symbols are U, and the middle 2 symbols are F.
- the time slot format corresponding to the 59th line indicates that the first part of a time slot uses 5 downlink ECP symbols, the latter part uses 6 uplink NCP symbols, and the middle part uses flexible NCP symbols.
- the time domain resource allocated by the base station for the terminal When the time domain resource allocated by the base station for the terminal needs to use the ECP slot, it can select the slot format or slot format combination that contains the ECP symbol from the slot format table, and generate the corresponding SFI to carry in the DCI and send it to the terminal.
- the terminal determines the corresponding time domain resource according to the indication of the SFI.
- a maximum of 512 time slots can be configured for the combination of the above time slot formats.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the number of time slots included in the slot format can be increased, such as making The number of slots is increased to 1024 or 2048, which can prevent terminals in edge cells from missing DCI detection.
- the SFI is carried in the DCI, and after the dynamic instruction is obtained, it further includes:
- the base station scrambles the DCI with the specified identifier; wherein, the specified identifier is used to scramble the DCI indicating the ECP time slot; the base station sends the scrambled DCI to the terminal.
- the base station can set a specified identifier to scramble the DCI indicating the ECP time slot, and send the scrambled DCI to the terminal after scrambling, so that only the terminal that needs to receive the broadcast multicast service can receive
- the designated identifier is used to detect the scrambled DCI to obtain the corresponding time domain resources. In this way, other terminals that do not need to receive the broadcast multicast service cannot detect the DCI carrying the ECP time slot, thereby eliminating the need for subsequent processing and reducing the workload of other terminals.
- an embodiment of the present invention provides a method for dynamically indicating an ECP time slot, which is applied to a terminal.
- FIG. 8 for a flowchart of a method for dynamically indicating an ECP time slot on the terminal side provided by an embodiment of the present invention. The method includes:
- Step 801 The terminal receives dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- Step 802 the terminal obtains the time domain resource information corresponding to the ECP time slot from the dynamic signaling.
- the terminal side obtains the indication and determines the corresponding time domain resource information in the following manner:
- the terminal obtains the time domain resource information corresponding to the ECP time slot from the dynamic signaling in the first way:
- the terminal obtains the time domain resource information corresponding to the ECP time slot from the DCI directly indicating the PDSCH where the ECP time slot is located.
- the terminal side obtains the time domain resource information corresponding to the ECP time slot from the preset indication field of the DCI; wherein, the preset indication field occupies 1 bit.
- the preset indication fields include:
- the newly added indication field in DCI is used to indicate the CP type symbol; where the CP type symbol includes NCP symbol or/and ECP symbol;
- a reinterpreted or defined indication field in the DCI and the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indication field includes a bit field of uplink control channel power control; or, indication information for indicating uplink or downlink scheduling signaling.
- the base station adds an indication field in the DCI, and the indication field occupies 1 bit.
- the base station can set 1 in the indication field to indicate the NCP symbol, and set 0 to indicate the ECP symbol, or vice versa.
- the indication field indicates the ECP symbol (for example, when it is set to 1 or 0).
- the base station redefines or interprets the bit field of uplink channel power control in DCI, it is used to indicate the CP symbol type, and the terminal obtains the bit field according to the redefined or interpreted uplink channel power control from the received DCI , obtain corresponding information to determine the time domain resource corresponding to the ECP time slot.
- the terminal obtains the TDRA index of the time domain resource from the TDRA indication field of the DCI; and determines the time domain resource information based on the TDRA index and the corresponding TDRA table.
- the TDRA table can be the ECP symbol as the time unit, or the NCP symbol as the time unit, the terminal can use the following when determining the time domain resource information corresponding to the ECP time slot based on the TDRA index and the corresponding TDRA table Several ways to achieve:
- the first method when the TDRA table uses the ECP symbol as the time unit, the time domain resource information is determined according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table.
- the second type when the TDRA table takes the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and take the NCP symbol as the time unit from the TDRA table, and convert the second SLIV information into the ECP symbol.
- the third SLIV information of the time unit and determine the time domain resource information according to the third SLIV information.
- the base station configures a TDRA table with NCP symbols as the time unit (as shown in Table 2).
- the TDRA index corresponding to the time domain resources allocated by the base station to the terminal is 3 in Table 2.
- the smaller of the start symbol of the second SLIV information and 11 is used as the start symbol of the third SLIV information; the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- the TDRA index in the TDRA table with the NCP symbol as the time unit can be directly used for the ECP time slot, which improves the working efficiency of both communication parties.
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is the symbol length of NCP
- ECP_duration is ECP The symbol length of , delta is the CP increment, ceil() is the function of rounding up, and floor() is the function of rounding down.
- NCP_duration 2192
- the first formula above is used to calculate the values (0-12) of all start symbols (denoted as NCP start symbols) with NCP symbols as time units, and the corresponding ECP symbols as time units (denoted as NCP start symbols) are calculated.
- the start symbol (0-11) is the ECP start symbol), as shown in Table 7, which is the corresponding relationship table between the NCP start symbol and the conversion result of the ECP start symbol provided by the embodiment of the present invention.
- the correspondence table of the conversion results of the NCP symbol length and the ECP symbol length can be calculated.
- S is 7.
- the value of the SCS can also be other values, and the corresponding NCP symbols and ECP symbols have different time lengths.
- the above-mentioned method can be used to convert the second SLIV information with the NCP symbol as the time unit under different SCSs into Third SLIV information with ECP symbol as time unit.
- converting the second SLIV information into the third SLIV information with ECP symbols as the time unit may also be implemented in the following manner:
- the start symbol of the second SLIV information is less than or equal to 6, the start symbol of the second SLIV information is used as the start symbol of the third SLIV information;
- the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information
- the length of the second SLIV information is less than or equal to 7, the difference between the length of the second SLIV information and 1 is used as the length of the third SLIV information;
- the difference between the length of the second SLIV information and 2 is used as the length of the third SLIV information.
- the second SLIV information can be quickly converted into the third SLIV information with the ECP symbol as the time unit, thereby improving the processing efficiency of the terminal and reducing the calculation amount of the terminal.
- the terminal can directly determine whether the corresponding SLIV information uses NCP symbols or ECP symbols after obtaining the TDRA index. If the SLIV information uses NCP symbols, it can The conversion is performed in the above-mentioned manner of converting the second SLIV information into the third SLIV information.
- the specific CP type symbols used by the SLIV information in the TDRA table can be determined by the interface protocol between the base station and the terminal.
- the CP type symbols are different, and the sampling point positions of the start symbols of the SLIV information are different, such as FIG. 9 is a schematic diagram of sampling point locations corresponding to NCP symbols and ECP symbols in a time slot provided by an embodiment of the present invention.
- a second way for the terminal to obtain the time-domain resource information corresponding to the ECP time slot from dynamic signaling the terminal obtains the time-domain resource information corresponding to the ECP time slot from the DCI indirectly indicating the ECP time slot.
- the terminal obtains the time-domain resource information corresponding to the ECP time slot from the DCI indirectly indicating the ECP time slot, including the following implementation methods:
- the terminal reads the MCS index, and if the MCS index is smaller than the MCS threshold, obtains the time domain resource corresponding to the ECP time slot; wherein, the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot;
- the terminal acquires the time domain resource corresponding to the ECP time slot based on the inclusion relationship between the preset frequency domain resource block and the frequency domain resource range indicated by the frequency domain resource allocation FDRA information;
- the terminal acquires the time domain resource corresponding to the ECP time slot.
- the base station and the terminal agree that when the MCS index is greater than or equal to the MCS threshold, the CP type symbol is an ECP symbol, and when the MCS index is smaller than the MCS threshold, the CP type symbol is an NCP symbol.
- the terminal can determine that the time domain resources use ECP symbols.
- the terminal can determine whether the time domain resource uses the NCP symbol or the ECP symbol according to the received MCS index and the above correspondence.
- the base station and the terminal agree that: the frequency domain resource range including the preset frequency domain resource block (80) adopts the ECP time slot, then the terminal determines the frequency domain resource indicated by the FDRA information after receiving the FDRA information
- the range (0-100) includes preset frequency-domain resource blocks (80), and it is determined that ECP symbols are used. If the range of frequency domain resources indicated by the FDRA information is 0-60, the terminal can determine that NCP symbols are used.
- the base station and the terminal agree that the end frequency domain position of the frequency domain resource range is greater than or equal to the preset frequency threshold (65), and the ECP symbol is used, and the NCP symbol is used if it is less than 65. If the terminal receives the FDRA information indicating that the frequency domain range is 0-100 (the end position is 100), it can be determined that the ECP symbol is used; if the terminal receives the FDRA information indicating that the frequency domain range is 0-60 (the end position is 60 ), it can be determined that the NCP symbol is used.
- the terminal receives the dynamic signaling that dynamically indicates the extended cyclic prefix ECP slot, which can be realized in the following ways:
- the terminal obtains the indication information of the slot format from the SFI; wherein, the indication information of the slot format is generated according to the slot format table of the slot format including the ECP symbol.
- the base station indicates that the index of the time slot format in the SFI is 56, then the base station can determine that the corresponding time slot uses the full downlink ECP symbol after obtaining the index 56 from the aSFI. If the SFI indicates a slot format combination, symbols corresponding to each slot in the slot format combination can be determined according to Table 6.
- the terminal needs to convert the time slot position information with the NCP symbol as the time unit in the slot format to the time slot position information with the ECP symbol as the time unit (including the start symbol position and the number of ECP symbols contained), can be determined in the same manner as converting the second SLIV information into the third SLIV information, namely:
- the starting symbol ECP_S of the ECP slot is equal to the value in the table
- the start symbol ECP_S of the ECP symbol is equal to the value -1 in the table
- the symbol number ECP_L of the ECP symbol is equal to the value -1 in the table
- the symbol number ECP_L of the ECP symbol is -2 in the table.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the SFI sent by the base station to the terminal in the edge cell indicates that the number of time slots contained in the time slot format of the ECP symbol is 1024 or 2048, and the terminal can detect the above information in a relatively long time to avoid missed detection.
- the terminal before the terminal obtains the indication information of the time slot format from the SFI, it further includes:
- the terminal detects the DCI with the specified identification number; wherein, the specified identification number is used to scramble the DCI indicating the ECP time slot; when it is determined that the DCI is scrambled with the specified identification number, it is determined that the DCI carries the SFI.
- the base station when it indicates the time domain resources of the broadcast multicast service (using ECP symbols), it can use a designated identifier (such as ECP_RNTI) to scramble the DCI carrying the above indication information, and the terminal that needs to obtain the above broadcast multicast service, Using the specified identifier to detect the scrambled DCI can obtain the corresponding time-domain resource, and a terminal that does not need to obtain the above-mentioned broadcast multicast service cannot obtain the corresponding time-domain resource without using the specified identifier to detect the DCI.
- a designated identifier such as ECP_RNTI
- PDSCH scheduling is divided into two types: Type A and Type B.
- Different types have different constraints on the start symbol and scheduling symbol length (or number of symbols) of PDSCH, as shown in Table 10.
- Table 10 shows that PDSCH corresponds to different scheduling Type is a list of combinations of valid start symbols (S) and symbol lengths (L).
- calculating S and L of the ECP scheduling symbol can be realized by using the scheme in the embodiment of the present invention.
- the calculation of S and L of ECP scheduling symbols requires further restrictions, such as limiting the S corresponding to ECP to 0 to 10, and the L corresponding to ECP to three values of 2, 4, and 6.
- the parameter L of allocating PDSCH can be called the number of symbols, and it can also be called the symbol length; , which can be applied to dynamically determine the ECP symbols/slots, and can also be determined in other ways (such as semi-static and static methods through high-layer signaling).
- a base station provided by an embodiment of the present invention includes a memory 1001, a transceiver 1002, and a processor 1003:
- the memory 1001 is used to store computer programs; the transceiver 1002 is used to send and receive data under the control of the processor 1003; the processor 1003 is used to read the computer programs in the memory 1001 and perform the following operations:
- the dynamic signaling includes DCI
- the processor 1003 is further configured to:
- the processor 1003 is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the processor 1003 is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the inclusion relationship is used to indicate scheduling ECP symbols or NCP symbols;
- the processor 1003 is further configured to:
- CP type symbol indicating a scheduling symbol in the configuration item of the TDRA table; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- the index is indicated in the TDRA indication field of the DCI.
- the processor 1003 is further configured to:
- the SFI is carried in the DCI to obtain the dynamic instruction.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the processor 1003 is further configured to:
- the transceiver 1002 is used for receiving and sending data under the control of the processor 1003 .
- the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1003 and various circuits of the memory represented by the memory 1001 are linked together.
- the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
- the bus interface provides the interface.
- Transceiver 1002 may be a plurality of elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over transmission media, including wireless channels, wired channels, optical cables, and other transmission media.
- the processor 1003 is responsible for managing the bus architecture and general processing, and the memory 1001 can store data used by the processor 1003 when performing operations.
- the processor 1003 can be a central processing device (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device , CPLD), the processor can also adopt a multi-core architecture.
- CPU central processing device
- ASIC Application Specific Integrated Circuit
- FPGA field programmable gate array
- CPLD Complex Programmable Logic Device
- an embodiment of the present invention provides a terminal, including a memory 1101, a transceiver 1102, and a processor 1103:
- the memory 1101 is used to store computer programs; the transceiver 1102 is used to send and receive data under the control of the processor 1103; the processor 1103 is used to read the computer programs in the memory 1101 and perform the following operations:
- the dynamic signaling includes the DCI, and the processor 1103 is further configured to:
- the processor 1103 is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the time domain resource corresponding to the ECP time slot is acquired.
- the processor 1103 is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the processor 1103 is further configured to:
- the time-domain resource information is determined based on the TDRA index and the corresponding TDRA table.
- the processor 1103 is further configured to:
- the TDRA table uses ECP symbols as time units, determine the time domain resource information according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table;
- the TDRA table uses the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and use the NCP symbol as the time unit from the TDRA table, and store the second SLIV information It is converted into third SLIV information with ECP symbols as time units, and the time domain resource information is determined according to the third SLIV information.
- the processor 1103 is further configured to:
- the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- the processor 1103 is further configured to:
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is The symbol length of the NCP
- ECP_duration is the symbol length of the ECP
- delta is the CP increment
- ceil() is a function of rounding up
- floor() is a function of rounding down.
- the processor 1103 is further configured to:
- start symbol of the second SLIV information When the start symbol of the second SLIV information is less than or equal to 6, use the start symbol of the second SLIV information as the start symbol of the third SLIV information;
- the start symbol of the second SLIV information is greater than or equal to 7, the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information;
- the dynamic signaling includes time slot format indication information SFI in the DCI, and the processor 1103 is further configured to:
- the indication information of the slot format is acquired from the SFI; wherein, the indication information of the slot format is generated according to the slot format table including the slot format of the ECP symbol.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the processor 1103 is further configured to:
- the DCI Before obtaining the indication information of the time slot format from the SFI, detect the DCI with a designated identification number; wherein, the designated identification number is used to scramble the DCI indicating the ECP time slot;
- the transceiver 1102 is configured to receive and send data under the control of the processor 1103 .
- the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1103 and various circuits of the memory represented by the memory 1101 are linked together.
- the bus architecture can also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein.
- the bus interface provides the interface.
- Transceiver 1102 may be a plurality of elements, including a transmitter and a receiver, providing means for communicating with various other devices over transmission media, including wireless channels, wired channels, fiber optic cables, etc. Transmission medium.
- the user interface 1104 may also be an interface capable of connecting externally and internally to required devices, and the connected devices include but not limited to keypads, displays, speakers, microphones, joysticks, and so on.
- the processor 1103 is responsible for managing the bus architecture and general processing, and the memory 1101 can store data used by the processor 1103 when performing operations.
- the processor 1103 can be a CPU (Central Office), ASIC (Application Specific Integrated Circuit, Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array, Field Programmable Gate Array) or CPLD (Complex Programmable Logic Device , complex programmable logic device), the processor can also adopt a multi-core architecture.
- CPU Central Office
- ASIC Application Specific Integrated Circuit
- FPGA Field-Programmable Gate Array
- CPLD Complex Programmable Logic Device , complex programmable logic device
- the processor can also adopt a multi-core architecture.
- the processor is used to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory.
- the processor and memory may also be physically separated.
- an embodiment of the present invention provides a base station.
- the base station includes:
- a generating unit 1201 configured to generate dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- the sending unit 1202 is configured to send the dynamic signaling to the terminal.
- the dynamic signaling includes the DCI
- the generating unit 1201 is further configured to:
- the generating unit 1201 is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the generating unit 1201 is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the inclusion relationship is used to indicate scheduling ECP symbols or NCP symbols;
- the generating unit 1201 is further configured to:
- CP type symbol indicating a scheduling symbol in the configuration item of the TDRA table; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- the index is indicated in the TDRA indication field of the DCI.
- the generating unit 1201 is further configured to:
- the SFI is carried in the DCI to obtain the dynamic instruction.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the generating unit 1201 is further configured to:
- an embodiment of the present invention provides a terminal.
- the terminal includes:
- the receiving unit 1301 is configured to receive dynamic signaling that dynamically indicates an ECP time slot; wherein, the ECP time slot includes at least one ECP symbol;
- the obtaining unit 1302 is configured to obtain time domain resource information corresponding to the ECP time slot from the dynamic signaling.
- the dynamic signaling includes DCI
- the obtaining unit 1302 is further configured to:
- the acquiring unit 1302 is further configured to:
- the MCS threshold is a critical value for distinguishing the ECP time slot from the NCP time slot
- the time domain resource corresponding to the ECP time slot is acquired.
- the acquiring unit 1302 is further configured to:
- the preset indication field includes:
- a newly added indication field in the DCI is used to indicate a CP type symbol; wherein, the CP type symbol includes an NCP symbol or/and an ECP symbol;
- a reinterpreted or defined indication field in the DCI where the reinterpreted or defined indication field is used to indicate the CP type symbol.
- the reinterpreted or defined indicator domain includes:
- indication information used to indicate uplink or downlink scheduling signaling.
- the acquiring unit 1302 is further configured to:
- the time-domain resource information is determined based on the TDRA index and the corresponding TDRA table.
- the acquiring unit 1302 is further configured to:
- the TDRA table uses ECP symbols as time units, determine the time domain resource information according to the first start/length SLIV information corresponding to the TDRA index in the TDRA table;
- the TDRA table uses the NCP symbol as the time unit, determine the second SLIV information corresponding to the TDRA index and use the NCP symbol as the time unit from the TDRA table, and store the second SLIV information It is converted into third SLIV information with ECP symbols as time units, and the time domain resource information is determined according to the third SLIV information.
- the acquiring unit 1302 is further configured to:
- the smaller of the length of the second SLIV information and 12 is used as the length of the third SLIV information.
- the acquiring unit 1302 is further configured to:
- the first formula includes:
- S_ECP ceil((S*NCP_duration+delta)/ECP_duration);
- the second formula includes:
- L_ECP floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
- S_ECP is the start symbol of the third SLIV information
- S is the start symbol of the second SLIV information
- L_ECP is the length of the third SLIV information
- L is the length of the second SLIV information
- NCP_duration is The symbol length of the NCP
- ECP_duration is the symbol length of the ECP
- delta is the CP increment
- ceil() is a function of rounding up
- floor() is a function of rounding down.
- the acquiring unit 1302 is further configured to:
- start symbol of the second SLIV information When the start symbol of the second SLIV information is less than or equal to 6, use the start symbol of the second SLIV information as the start symbol of the third SLIV information;
- the start symbol of the second SLIV information is greater than or equal to 7, the difference between the start symbol of the second SLIV information and 1 is used as the start symbol of the third SLIV information;
- the difference between the length of the second SLIV information and 2 is used as the length of the third SLIV information.
- the dynamic signaling includes time slot format indication information SFI in the DCI, and the receiving unit 1301 is further configured to:
- the indication information of the slot format is acquired from the SFI; wherein, the indication information of the slot format is generated according to the slot format table including the slot format of the ECP symbol.
- the number of time slots included in the time slot format of the ECP symbol includes 1024 or 2048.
- the receiving unit 1301 is further configured to:
- each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
- the above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.
- the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium.
- the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
- the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .
- an embodiment of the present invention further provides a processor-readable storage medium, where a computer program is stored in the processor-readable storage medium, and the computer program is used to enable the processor to execute the above terminal side or base station The method for dynamically indicating the ECP time slot described above.
- the processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.
- magnetic storage e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.
- optical storage e.g., CD, DVD, BD, HVD, etc.
- semiconductor memory such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)
- the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) having computer-usable program code embodied therein.
- processor-executable instructions may also be stored in a processor-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the processor-readable memory produce a manufacturing product, the instruction device realizes the functions specified in one or more procedures of the flow chart and/or one or more blocks of the block diagram.
- processor-executable instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented
- the executed instructions provide steps for implementing the functions specified in the procedure or procedures of the flowchart and/or the block or blocks of the block diagrams.
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Abstract
本发明公开了一种动态指示ECP时隙的方法、基站及存储介质,用以解决现有技术中存在的NR系统中没有指示ECP时隙的技术问题,该方法包括:基站生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;所述基站向终端发送所述动态信令。
Description
相关申请的交叉引用
本申请要求在2021年09月14日提交中国专利局、申请号为202111076761.1、申请名称为“一种动态指示ECP时隙的方法、基站及存储介质”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。
本发明涉及通信领域,尤其是涉及一种动态指示ECP时隙的方法、基站及存储介质。
在无线通信系统中,为提高广播、组播业务的传输效率通常使用单频网(single frequency network,SFN)。
但使用SFN传输数据时,通常需先向终端指示数据传输的时隙采用的循环前缀(Cyclic prefix,CP)的类型,以便终端按指示的CP的类型对应的相关参数进行数据接收;其中,CP的类型包括扩展CP(Extend Cyclic prefix,ECP)和普通CP(Normal Cyclic Prefix,NCP),ECP的时域长度大于NCP的时域长度,ECP的时隙或符号通常被称之为ECP时隙,NCP的时隙或符号通常被称之为NCP时隙。
现有技术中,当子载波间隔(Subcarrier spacing,SCS)为15kHz时,将ECP时隙称为多播/组播单频网络传输区域(Multimedia Broadcast multicast service Single Frequency Network Transmission area,MBSFN)子帧。目前,在LTE系统中,采用系统广播消息配置的MBSFN子帧,这种配置方式属于半静态配置,且是以10ms(1个无线帧)为单位对MBSFN子帧的配置进行指示的。
在未来的广播、组播业务中,需要支持数据传输速率更高的视频流媒体业务,比如高清电视、增强现实(Augmented Reality,AR)/虚拟现实(Virtual Reality,VR)图像等。
然而,支持未来广播、组播业务的新空口(New Radio,NR)系统,由于不支持MBSFN技术,也不支持在一个载波/带宽(Bandwidth Part,BWP)上有混合CP(即既包含ECP又包含NCP)的场景,因此NR系统中还没有指示ECP时隙的方法。
发明内容
本发明提供一种动态指示ECP时隙的方法、基站及存储介质,用以解决现有技术中存在的上述技术问题。
第一方面,为解决上述技术问题,本发明实施例提供的一种动态指示ECP时隙的方法的技术方案如下:
基站生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
所述基站向终端发送所述动态信令。
一种可能的实施方式,所述动态信令包括所述DCI,基站生成动态指示ECP时隙的动态信令,包括:
生成直接指示所述ECP时隙所在PDSCH的DCI;
或,生成间接指示所述ECP时隙的DCI。
一种可能的实施方式,生成直接指示所述ECP时隙所在PDSCH的DCI,包括:
所述基站在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,生成间接指示所述ECP时隙的DCI,包括:
生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;
或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
一种可能的实施方式,生成直接指示所述ECP时隙所在PDSCH的DCI,包括:
所述基站在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
所述基站根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;
所述基站在所述DCI的TDRA指示域中指示所述索引。
一种可能的实施方式,基站生成动态指示ECP时隙的动态信令,包括:
所述基站在时隙格式表中增加ECP符号相关的信息;
所述基站基于所述时隙格式表,生成所述ECP时隙的SFI;
将所述SFI携带在DCI中,获得所述动态指令。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,将所述SFI携带在DCI中,获得所述动态指令之后,还包括:
所述基站用指定标识符对所述DCI进行加扰;其中,所述指定标识符用 于对指示所述ECP时隙的DCI加扰;
所述基站向所述终端发送加扰后的DCI。
第二方面,本发明实施例提供了一种动态指示ECP时隙的方法,包括:
终端接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
所述终端从所述动态信令中获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述动态信令包括所述DCI,所述终端从所述动态信令中获取所述ECP时隙对应的时域资源信息,包括:
所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;
或,所述终端从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述终端从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息,包括:
所述终端读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,所述终端基于预设频域资源块与FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;
或,所述终端基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
一种可能的实施方式,所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源,包括:
所述终端从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号; 其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源,包括:
从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;
基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
一种可能的实施方式,基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息,包括:
在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;
或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
一种可能的实施方式,将以NCP符号为时间单元的第二SLIV信息,转换为以ECP符号为时间单元的第三SLIV信息,包括:
将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;
将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
一种可能的实施方式,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,包括:
采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三 SLIV信息的起始符号;
采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;
其中,所述第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
所述第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
一种可能的实施方式,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,包括如下至少一个步骤:
在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;
在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
一种可能的实施方式,所述动态指令包括DCI中的SFI,终端接收动态指示ECP时隙的动态信令,包括:
所述终端从SFI获取时隙格式的指示信息;其中,所述时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括 1024或者2048。
一种可能的实施方式,所述终端从SFI获取时隙格式的指示信息之前,还包括:
所述终端用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;
在确定所述DCI使用所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
第三方面,本发明实施例还提供一种基站,包括存储器,收发机,处理器:
存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行以下操作:
生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
向终端发送所述动态信令。
一种可能的实施方式,所述动态信令包括所述DCI,所述处理器还用于:
生成直接指示所述ECP时隙所在PDSCH的DCI;
或,生成间接指示所述ECP时隙的DCI。
一种可能的实施方式,所述处理器还用于:
在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述处理器还用于:
生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;
或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
一种可能的实施方式,所述处理器还用于:
在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;
在所述DCI的TDRA指示域中指示所述索引。
一种可能的实施方式,所述处理器还用于:
在时隙格式表中增加ECP符号相关的信息;
基于所述时隙格式表,生成所述ECP时隙的SFI;
将所述SFI携带在DCI中,获得所述动态指令。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述处理器还用于:
将所述SFI携带在DCI中,获得所述动态指令之后,用指定标识符对所述DCI进行加扰;其中,所述指定标识符用于对指示所述ECP时隙的DCI加扰;
向所述终端发送加扰后的DCI。
第四方面,本发明实施例提供了一种终端,包括存储器,收发机,处理 器:
存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行以下操作:
接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
从所述动态信令中获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述动态信令包括DCI,所述处理器还用于:
从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;
或,从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述处理器还用于:
读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与频域资源分配FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;
或,基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
一种可能的实施方式,所述处理器还用于:
从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述处理器还用于:
从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;
基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
一种可能的实施方式,所述处理器还用于:
在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;
或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
一种可能的实施方式,所述处理器还用于:
将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;
将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
一种可能的实施方式,所述处理器还用于:
采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;
采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;
其中,所述第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
一种可能的实施方式,所述处理器还用于:
在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;
在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
一种可能的实施方式,所述动态信令包括DCI中的SFI,所述处理器还用于:
从SFI获取时隙格式的指示信息;其中,所述时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述处理器还用于:
从SFI获取时隙格式的指示信息之前,用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;
在确定所述DCI使用的是所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
第五方面,本发明实施例还提供一种基站,包括:
生成单元,用于生成动态指示ECP时隙的动态信令;其中,所述ECP时 隙包括至少一个ECP符号;
发送单元,用于向终端发送所述动态信令。
一种可能的实施方式,所述动态信令包括所述DCI,所述生成单元还用于:
生成直接指示所述ECP时隙所在PDSCH的DCI;
或,生成间接指示所述ECP时隙的DCI。
一种可能的实施方式,所述生成单元还用于:
在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述生成单元还用于:
生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;
或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
一种可能的实施方式,所述生成单元还用于:
在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP 类型符号包括NCP符号或/和ECP符号;
根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;
在所述DCI的TDRA指示域中指示所述索引。
一种可能的实施方式,所述生成单元还用于:
在时隙格式表中增加ECP符号相关的信息;
基于所述时隙格式表,生成所述ECP时隙的SFI;
将所述SFI携带在DCI中,获得所述动态指令。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述生成单元还用于:
将所述SFI携带在DCI中,获得所述动态指令之后,用指定标识符对所述DCI进行加扰;其中,所述指定标识符用于对指示所述ECP时隙的DCI加扰;
向所述终端发送加扰后的DCI。
第六方面,本发明实施例还提供一种终端,包括:
接收单元,用于接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
获取单元,用于从所述动态信令中获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述动态信令包括所述DCI,所述获取单元还用于:
从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;
或,从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述获取单元还用于:
读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;
或,基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
一种可能的实施方式,所述获取单元还用于:
从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述获取单元还用于:
从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;
基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
一种可能的实施方式,所述获取单元还用于:
在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;
或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根 据所述第三SLIV信息确定所述时域资源信息。
一种可能的实施方式,所述获取单元还用于:
将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;
将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
一种可能的实施方式,所述获取单元还用于:
采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;
采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;
其中,所述第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
所述第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
一种可能的实施方式,所述获取单元还用于:
在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;
在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
一种可能的实施方式,所述动态信令包括DCI中的SFI,所述接收单元还用于:
从SFI获取时隙格式的指示信息;其中,所述时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述接收单元还用于:
用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;
在确定所述DCI使用的是所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
第七方面,本发明实施例还提供一种处理器可读存储介质,所述处理器可读存储介质存储有计算机程序,所述计算机程序用于使所述处理器执行如第一方面或第二方面所述的方法。
通过本发明实施例的上述一个或多个实施例中的技术方案,本发明实施例至少具有如下技术效果:
在本发明提供的实施例中,通过基站生成动态指示包括至少一个ECP符号的ECP时隙的动态信令,并发送该动态信令给终端,使得基站能动态灵活的调度ECP时隙对应的数据,在满足广播组播数据传输性能的基础上,提高了资源使用的灵活性,达到资源利用率最大化。
图1为现有技术中NCP和ECP在1个时隙中的时长示意图;
图2为现有技术中NCP和ECP在1个时隙中的采样点示意图;
图3为现有技术中时隙格式组合的示意图;
图4为LTE系统中MBSFN子帧的配置示意图;
图5为本发明实施例提供的基站侧的一种动态指示ECP时隙方法的流程图;
图6为本发明实施例提供的第一FDRA与预设频域资源块的包含关系示意图;
图7为本发明实施例提供的第二FDRA与预设频率阈值的大小关系示意图;
图8为本发明实施例提供的终端侧的一种动态指示ECP时隙方法的流程图;
图9所示为本发明实施例提供的一个时隙中NCP符号和ECP符号对应的采样点位置示意图;
图10为本发明实施例提供的一种基站的结构示意图;
图11为本发明实施例提供的一种终端的结构示意图;
图12为本发明实施例提供的另一种基站的结构示意图;
图13为本发明实施例提供的另一种终端的结构示意图。
本发明实施例中术语“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请实施例中术语“多个”是指两个或两个以上,其它量词与之类似。
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本申请一部分实施例,并不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例提供的技术方案可以适用于多种系统,尤其是5G系统。例如适用的系统可以是全球移动通讯(global system of mobile communication, GSM)系统、码分多址(code division multiple access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)通用分组无线业务(general packet radio service,GPRS)系统、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)系统、高级长期演进(long term evolution advanced,LTE-A)系统、通用移动系统(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)系统、5G NR系统等。这多种系统中均包括终端设备和网络设备。系统中还可以包括核心网部分,例如演进的分组系统(Evloved Packet System,EPS)、5G系统(5GS)等。
本申请实施例涉及的终端设备,可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备等。在不同的系统中,终端设备的名称可能也不相同,例如在5G系统中,终端设备可以称为用户设备(User Equipment,UE)。无线终端设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网(Core Network,CN)进行通信,无线终端设备可以是移动终端设备,如移动电话(或称为“蜂窝”电话)和具有移动终端设备的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。例如,个人通信业务(Personal Communication Service,PCS)电话、无绳电话、会话发起协议(Session Initiated Protocol,SIP)话机、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)等设备。无线终端设备也可以称为系统、订户单元(subscriber unit)、订户站(subscriber station),移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点(access point)、远程终端设备(remote terminal)、接入终端设备(access terminal)、用户终端设备(user terminal)、用户代理(user agent)、用户装置(user device),本申请实施例中并不限定。
本申请实施例涉及的网络设备,可以是基站,该基站可以包括多个为终 端提供服务的小区。根据具体应用场合不同,基站又可以称为接入点,或者可以是接入网中在空中接口上通过一个或多个扇区与无线终端设备通信的设备,或者其它名称。网络设备可用于将收到的空中帧与网际协议(Internet Protocol,IP)分组进行相互更换,作为无线终端设备与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)通信网络。网络设备还可协调对空中接口的属性管理。例如,本申请实施例涉及的网络设备可以是GSM或CDMA中的网络设备(Base Transceiver Station,BTS),也可以是WCDMA中的网络设备(NodeB),还可以是LTE系统中的演进型网络设备(evolutional Node B,eNB或e-NodeB)、5G网络架构(next generation system)中的5G基站(gNB),也可以是家庭演进基站(Home evolved Node B,HeNB)、中继节点(relay node)、家庭基站(femto)、微微基站(pico)等,本申请实施例中并不限定。在一些网络结构中,网络设备可以包括集中单元(centralized unit,CU)节点和分布单元(distributed unit,DU)节点,集中单元和分布单元也可以地理上分开布置。
当前,NR技术采用正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)技术,为了克服多径传输带来的符号间的干扰,在传输的数据符号之前需插入CP,CP时域越长,抵抗多径干扰能力越强。
请参见图1和图2,图1为现有技术中NCP和ECP在1个时隙中的时长示意图,图2为现有技术中NCP和ECP在1个时隙中的采样点示意图。
上述图1和图2中SCS为15kHz,如图1所示,当SCS=15kHz时,1个时隙的长度为1ms,当该时隙中插入的CP为NCP时,此时隙包含14个符号;当该时隙中插入的是NCP时,此时隙中包含12个符号。为了便于计算,将图1中以时间单元作为度量元的时隙,转换为如图2所示的以采样点为度量元的时隙,不管时隙中插入的是NCP还是ECP,1个时隙(1ms)包含的总的采样点数均为30720。在本发明中,将时隙中插入NCP的时隙称之为NCP时隙,NCP时隙内的符号称之为NCP符号;将时隙中插入ECP的时隙称之为ECP时隙,ECP时隙内的符号称之为ECP符号。
基站在为终端分配资源时,需要向终端指示资源所采用的时隙格式,请参见表1为以NCP符号为长度的时隙格式表。
表1
在表1中D表示下行的NCP符号,U表示上行的NCP符号,F表示灵活的NCP符号。
基站向终端指示时隙格式时,通常是用时隙格式指示信息(Slot Format Indication,SFI)指示时隙格式组合,该SFI携带在下行链路控制信息(Downlink Control Information,DCI)中发送给终端,对于一组终端的下行控制信息,格式2_0的DCI用SFI-RNTI作加扰。
请参见图3为现有技术中时隙格式组合的示意图。
如图3所示,假设基站定义了3个时隙格式组合(0~2),每个时隙组合包含10个时隙。
需要说明的是,在标准中最大时隙格式组合个数为512个,每个时隙组合包含最大的时隙数为512。即maxNrofSlotFormatCombinationsPerSet=512,maxNrofSlotFormatsPerCombination=512。
图3中,三个时隙格式组合描述如下:
时隙格式组合0是全下行时隙,在时隙格式表(表1)中的对应的时隙格式索引为0,当DCI格式2_0中的时隙格式信息(即时隙格式组合)为0时,表示指示的10个时隙中,均为下行符号。
时隙格式组合1是全上行时隙,在时隙格式表(表1)中的对应的时隙格式索引为1,当DCI格式2_0中的时隙格式信息为1时,表示指示的1个时隙中,均为上行符号。
时隙格式组合2包括部分上行时隙,部分下行时隙,1个既包含上行和下行符号的时隙,在时隙格式表(表1)中的对应的时隙格式索引为0,1和45,当DCI格式2_0中的时隙格式信息为2时,表示前6个时隙为下行,后3个时隙为上行,第7个时隙即包含上行符号,也包含下行符号。
现有LTE中(SCS=15KHz),采用系统广播消息配置的MBSFN子帧(即ECP时隙),该方法属于半静态配置,以10ms(1个无线帧)为单位进行MBSFN子帧配置指示,其指示方法采用比特位图的方案如图4所示,图4为LTE系统中MBSFN子帧的配置示意图。
配置MBSFN子帧,以10ms的无线帧为单位,采用比特位图的方法指示,其中:
子帧#0,#5,包含初始接入信号,默认为NCP,无需指示。
子帧#4,#9用于做单播调度,默认为NCP,无需指示。
6比特(b0~b5)指示6个子帧是否为ECP,其中第1个bit指示子帧#1,第2个bit指示子帧#2,第3个bit指示子帧#3,第4个bit指示子帧#6,第5个bit指示子帧#7,第6个bit指示子帧#8,每个bit位中1表示是ECP,0表示是NCP。
显然,LTE系统中用半静态配置MBSFN子帧的方式限制了基站调度的灵活性,MBSFN子帧中时隙级的资源定义导致资源利用率降低。
而在NR系统中,由于不支持MBSFN技术,也不支持在一个载波/BWP上有混合CP的场景,因此还没有指示ECP的方法。
为了解决上述问题,本申请实施例提供了一种动态指示ECP时隙的方法、基站及存储介质方法及装置。
其中,方法和装置是基于同一申请构思的,由于方法和装置解决问题的原理相似,因此装置和方法的实施可以相互参见,重复之处不再赘述。
请参考图5,本发明实施例提供一种动态指示ECP时隙的方法,该方法的处理过程如下。
步骤501:基站生成动态指示ECP时隙的动态信令;其中,ECP时隙包括至少一个ECP符号;
步骤502:基站向终端发送动态信令。
在本发明提供的实施例中,通过基站生成动态指示包括至少一个ECP符号的ECP时隙的动态信令,并发送该动态信令给终端,使得基站能动态灵活的调度ECP时隙对应的数据,在满足广播组播数据传输性能的基础上,提高了资源使用的灵活性,达到资源利用率最大化。
一种可能的实施方式,基站生成动态指示ECP时隙的动态信令,可以是基于调度物理下行共享信道(Physical downlink shared channel,PDSCH)的DCI生成的,具体可以通过以下两种方式实现:
第一种:生成直接指示ECP时隙所在PDSCH的DCI;其中,动态信令包括DCI。
第二种:生成间接指示ECP时隙的DCI。
针对第一种,生成直接指示ECP时隙所在PDSCH的DCI,可以是在DCI中使用1比特信息指示,也可以是在时域资源分配(Time Domain Resource Allocation,TDRA)配置项中增加CP类型符号指示。
在DCI中使用1比特信息指示,可以是基站在DCI的预设指示域中指示ECP时隙;其中,预设指示域占用1比特。
上述预设指示域,包括:
在DCI中新增的指示域,新增的指示域用于指示CP类型符号;其中,CP类型符号包括NCP符号或/和ECP符号;
或,DCI中一个被重新解释或定义的指示域,被重新解释或定义的指示域用于指示CP类型符号。
例如,在广播组播的DCI中指定1个比特位作为新增的指示域,用于CP类型符号指示,当CP类型符号指示为1时,表示调度的数据为NCP,如当CP类型符号指示为0时,表示调度的数据为ECP。
又如,对DCI中现有的占用1个比特位的指示域进行重新解释,或者定义,被重新解释和定义的指示域用于CP类型符号的指示。
被重新解释或定义的指示域,可以是上行控制信道功率控制的比特域;或,用于指示上行或下行调度信令的指示信息等。
在上述CP类型符号指示不同时,相应的终端确定对应时域信息的方式也不同。
如,现有技术中,TDRA表的时间单元为NCP符号,当CP类型符号指示的是ECP符号时,DCI中指示的是NCP符号的SLIV信息,终端需要将NCP符号的SLIV转换为ECP符号的SLIV才能正确的获取对应的时域信息。
请参见表2是NCP符号的TDRA表。
表2
如表2所示,在DCI中的TDRA指示域中,当索引为0时,表示调度PDSCH所在时隙的起始符号为0,长度为14;在DCI中的TDRA指示域中,当索引为1时,表示调度PDSCH所在时隙的起始符号为0,长度为7。表2中在计算起始符号和长度符号时,时按照NCP符号计算的。
当CP类型符号指示的是NCP符号时,终端使用表2中对应的SILV信息确定时域信息,当CP类型符号指示的是ECP符号时,终端需要将ECP符号 的SLIV信息转换为NCP符号的SLIV信息后,在确定对应的时域信息,具体将在后续终端侧中介绍,在此不再赘述。
当然,基站也可以在配置广播组播信息时,新增ECP符号的TDRA表,当CP类型符号指示的是ECP符号时,DCI中就可以指示ECP符号的SLIV信息,终端可以直接根据ECP符号的SLIV信息确定对应的时域信息。
请参见表3,为基站新增的ECP符号的TDRA表。
表3
如表3所示,在DCI中的TDRA指示域中,当索引为0时,表示调度PDSCH所在时隙的起始符号为0,长度为12;在DCI中的TDRA指示域中,当索引为1时,表示调度PDSCH所在时隙的起始符号为0,长度为6。表3中在计算起始符号和长度符号时,是按照ECP符号计算的。
需要说明的是:当ECP符号的TDRA表格入口项(即最大索引值),和NCP符号的TDRA表格入口项不相同时,基站调度指示的索引数值,不应该超过对应TDRA表的最大索引值。
直接指示ECP时隙的另一种方案是:基站在TDRA表配置项中增加指示调度符号的CP类型符号;其中,CP类型符号包括NCP符号或/和ECP符号;基站根据PDSCH所在时隙的起止位置从TDRA表中确定对应的索引;基站在DCI的TDRA指示域中指示索引。
请参见表4为本发明实施例提供的另一种TDRA表。
表4
如表4所示,在DCI中的TDRA指示域中,增加了CP类型符号,当索引为0时,表示调度PDSCH所在时隙的起始符号为0,长度为14,调度符号为NCP符号;在DCI中的TDRA指示域中,当索引为4时,表示调度PDSCH所在时隙的起始符号为2,长度为10,调度符号为ECP符号。
例如,基站将表4中的索引5写入DCI的TDRA指示域中,并将该DCI发送给终端,终端根据DCI的TDRA指示域中的索引5,可以确定对应时域信息为调度PDSCH所在时隙的起始符号为0,长度为12,调度符号为ECP符号。
在本发明提供的实施例中,通过在DCI中直接指示ECP时隙,可以使基站可以根据业务数据的实际需求,动态灵活的调度ECP时隙对应的数据;而 不必像LTE系统中配置MBSFN子帧那样,在业务数据突然增多时,若配置过多的MBSFN子帧导致资源浪费,进而影响单播业务的实时传输,若配置过少的MBSFN子帧又将增大MBS数据的传输时延,降低用户体验。因此本申请的上述方案能有效的提高传输效率、降低传输时延,并且由于在指示ECP时隙时是以符号级进行指示,而不是像LET系统中那样是以时隙级进行指示,因此能够进一步的提高资源利用率。
针对第二种,生成间接指示ECP时隙的DCI,可以通过下列几种方式实现:
生成间接指示ECP时隙的DCI的第一种方式:生成大于或等于调制与编码策略(Modulation and Coding Scheme,MCS)门限的MCS索引,并在DCI中携带MCS索引;其中,MCS门限为区分ECP时隙和NCP时隙的临界值。
例如,请参见表5为本发明实施例提供的组播数据MCS索引表,基站在组播数据MCS索引表中新增CP类型符号,用于指示MCS索引对应的CP。通过表5基站和终端约定:当DCI中指示的MCS索引小于一个MCS门限(假设为7)时,调度的CP类型符号为NCP符号,否则为ECP符号。
表5
假设基站需要进行广播组播数据调度,此时需要采用ECP符号,基站可以使用大于或等于7的MCS索引对应的调制编码方案进行数据的发送,因此基站生成大于或等于7的MCS索引(如表5中的16),并在DCI中携带MCS索引(16),将该DCI发送给终端,终端根据DCI中携带的MCS索引(16)不但可以确定采用MCS索引(16)对应的MCS进行调制编码,还能确定调度广播组播数据采用的是ECP符号。
需要理解的是,在上述DCI中携带的MCS索引的值小于组播数据MCS索引表中的最大MCS索引值。
此外,也可以通过信令消息指示终端,NCP符号和ECP符号分别对应的MCS索引的范围。如,通过信令消息将表5中MCS索引0~MCS索引6对应NCP符号,MCS索引7~MCS索引28对应ECP符号,这样便无需将组播数据MCS索引表发送给终端。
生成间接指示ECP时隙的DCI的第二种方式:基于预设频域资源块与第一频域资源分配(Frequency domain resource assignment,FDRA)的包含关系, 生成携带第一FDRA的DCI;其中,包含关系用于指示调度ECP符号或者NCP符号。
基站可以预先配置一个预设频域资源块,此预设频域资源块可以包括至少一个频域资源单元,当基站在DCI中指示的第一FDRA包含预设频域资源块时,对应的时域资源使用ECP符号,否则使用NCP符号。或者,第一FDRA包含预设频域资源块时,对应的时域资源使用NCP符号,否则使用ECP符号。
请参见图6为本发明实施例提供的第一FDRA与预设频域资源块的包含关系示意图。基站与终端约定:第一FDRA包含预设频域资源块时,对应的时域资源使用ECP符号,否则使用NCP符号。
在图6中,基站可调度的带宽为0~120,即BWP起始位置为0,BWP结束位置为120,预设频域资源块用Ref-PRB1表示,Ref-PRB1包括80~85共5个资源块。图6中DCI-1调度的PRB、DCI-2调度的PRB、DIC-3调度的PRB均可称之为第一FDRA。
在图6中,DCI-1调度的PDSCH,其FDRA指示的频域范围为0~100PRB,包含预设频域资源块(ref-PRB1包括80~85,资源块从80~85总共5个PRB),当基站将上述包含预设频域资源块的第一FDRA携带在DCI中发送给终端后,终端可以确定对应时域资源使用的是ECP符号。
DCI-2调度的PDSCH,其FDRA指示的频域范围为0~60PRB,不包含预设频域资源块(ref-PRB1),当基站将上述未包含预设频域资源块的第一FDRA携带在DCI中发送给终端后,终端可以确定对应时域资源使用的是NCP符号。
DCI-3调度的PDSCH,其FDRA指示的频域范围为70~120PRB,包含预设频域资源块(ref-PRB1),当基站将上述包含预设频域资源块的第一FDRA携带在DCI中发送给终端后,终端可以确定对应时域资源使用的是ECP符号。
生成间接指示ECP时隙的DCI的第三种方式:基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带第二FDRA的DCI;其中,大小关系用于指示调度ECP符号或者NCP符号。
例如,基站可以配置一个预设频率阈值,当调度数据的第二FDRA的结束频域位置大于或等于预设频率阈值时,对应调度的时域资源使用的是ECP符号,否则使用的是NCP符号。或者,当调度数据的第二FDRA的结束频域位置大于或等于预设频率阈值时,对应调度的时域资源使用的是NCP符号,否则使用的是ECP符号。
请参见图7为本发明实施例提供的第二FDRA与预设频率阈值的大小关系示意图。
在图7中,假设基站与终端约定:当调度数据的第二FDRA的结束频域位置大于或等于预设频率阈值时,对应调度的时域资源使用的是ECP符号,否则使用的是NCP符号。
基站为终端分配的时域资源使用的是ECP符号,基站可以调用的BWP为0~120,预设频率阈值(图7中以Ref-PRB2示意)为65,因此基站在为终端分配频域资源时,分配的是第一FDRA的结束频域位置大于或等于65,如图7中DCI-1调度的PRB和DCI-3调度的PRB所示;若基站为终端分配的时域资源使用的是NCP符号,则基站为终端分配频域资源时,分配的是第一FDRA的结束频域位置小于65,如图7中DCI-2调度的PRB所示。
在本发明提供的实施例中,通过在DCI中间接指示ECP时隙,可以节约单独为指示CP类型符号所占用的比特位,节约信令开销。
一种可能的实施方式,基站生成动态指示ECP时隙的动态信令,还可以通过下列方式实现:
基站在时隙格式表中增加ECP符号相关的信息;基站基于时隙格式表,生成ECP时隙的SFI;将SFI携带在DCI中,获得动态指令。
请参见表6为本发明实施例提供的时隙格式表。
表6
表6中D代表下行的NCP符号,U代表上行的NCP符号,F代表灵活的NCP符号,E代表下行的ECP符号。
如表6所示,基站可以在时隙格式表的56~59行增加ECP符号的指示(E),并通过SFI指示使用的时隙格式。
在上述时隙格式表的第56行指示的全为E,表示整个时隙的所有符号为ECP符号,即14个NCP符号时间长度中,包含12个ECP的符号,因此第56行对应的时隙格式是全部为ECP符号的下行时隙。
在上述时隙格式表的第57行中,前7个符号为D符号,后7个符号为E,由于表6的时隙格式表采用的是以NCP符号为时间单元,因此后7个符号E指示的是包含6个ECP的符号。即第57行对应的时隙格式表示:一个时隙的前半部分采用的是下行的NCP符号,后半部分采用的是下行的ECP符号。
在上述时隙格式表的第58行中,前7个符号E指示的是包含6个ECP符号,后7个符号为D,因此第58行对应的时隙格式表示:一个时隙的前半部分采用的是下行的ECP符号,后半部分采用的是下行的NCP符号。
在上述时隙格式表的第59行中,前6个符号为E,包含5个ECP符号, 后6个符号为U,中间2个符号为F。第59行对应的时隙格式表示:一个时隙中前一部分采用的是5个下行的ECP符号,后一部分采用的是6个上行的NCP符号,中间采用的是灵活的NCP符号。
当基站为终端分配的时域资源需要使用ECP时隙时,可以从时隙格式表中选取时包含ECP符号的隙格式或时隙格式组合,并生成对应的SFI携带在DCI中发送给终端,终端根据SFI的指示确定对应的时域资源。上述时隙格式组合最多可以配置512个时隙。
ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
例如,当基站中处于信号覆盖范围边缘的边缘小区中的终端,可能会出现漏检DCI的情况,此时可以增加时隙格式中包含的时隙个数,如使时隙格式中包含的时隙个数增加到1024或2048,这样可以防止边缘小区中的终端漏检DCI。
一种可能的实施方式,将SFI携带在DCI中,获得动态指令之后,还包括:
基站用指定标识符对DCI进行加扰;其中,指定标识符用于对指示ECP时隙的DCI加扰;基站向终端发送加扰后的DCI。
例如,基站可以设定一个指定标识符,对指示ECP时隙的DCI进行加扰,在加扰后,将加扰后的DCI发送给终端,这样仅需接收广播组播业务的终端,接收到上述加扰后的DCI后,用指定标识符对加扰后的DCI进行检测,获得对应的时域资源。这样可以使其它不需接收广播组播业务的终端,无法检测携带ECP时隙的DCI,从而无需进行后续处理,减少其它终端的工作量。
在从基站侧介绍完了动态指示ECP时隙的方法后,下面将从终端侧进行介绍。
基于同一发明构思,本发明实施例提供一种动态指示ECP时隙的方法,应用于终端,请参见图8为本发明实施例提供的终端侧的一种动态指示ECP时隙方法的流程图,该方法包括:
步骤801:终端接收动态指示ECP时隙的动态信令;其中,ECP时隙包 括至少一个ECP符号;
步骤802:终端从动态信令中获取ECP时隙对应的时域资源信息。
针对前述基站侧直接或间接的指示方式,终端侧相应的通过以下方式获取指示并确定对应的时域资源信息:
所述动态信令包括所述DCI时,终端从动态信令中获取ECP时隙对应的时域资源信息的第一种方式:
终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息。
针对基站侧在DCI的预设指示域中指示ECP时隙的方式,终端侧从DCI的预设指示域中,获取ECP时隙对应的时域资源信息;其中,预设指示域占用1比特。
其中,预设指示域,包括:
在DCI中新增的指示域,新增的指示域用于指示CP类型符号;其中,CP类型符号包括NCP符号或/和ECP符号;
或,DCI中一个被重新解释或定义的指示域,被重新解释或定义的指示域用于指示CP类型符号。被重新解释或定义的指示域包括上行控制信道功率控制的比特域;或,用于指示上行或下行调度信令的指示信息。
例如,基站在DCI中新增了一个指示域,该指示域占用1bit,基站可以在该指示域中设置1来指示NCP符号,设置0来指示ECP符号,或反之。或该指示域经指示ECP符号(如设为1或0时)。终端在获得DCI中新增的指示域指示的是ECP时隙后,可以获取对应的时域资源。
又如,基站对DCI中上行信道功率控制的比特域进行重新定义或解释后,用于指示CP符号类型,终端从接收到的DCI中获取根据重新定义或解释后的上行信道功率控制的比特域中,获取对应的信息确定ECP时隙对应的时域资源。
针对基站在TDRA表中增加CP类型符号的指示方式,终端从DCI的TDRA指示域中,获取时域资源的TDRA索引;基于TDRA索引及对应的 TDRA表,确定时域资源信息。
由于在本发明中,TDRA表可以ECP符号为时间单元,也可以NCP符号为时间单元,因此终端在基于TDRA索引及对应的TDRA表,确定ECP时隙对应的时域资源信息时,可以采用下列几种方式实现:
第一种:在TDRA表以ECP符号为时间单元的情况下,根据TDRA索引在TDRA表中对应的第一起始/长度SLIV信息,确定时域资源信息。
例如,基站配置了以ECP符号为时间单元的TDRA表(如表3所示),基站在DCI的TDRA指示域中可以直接指示表3中的TDRA索引(假设为3),终端在接收到上述DCI后,从中确定TDRA索引为3,根据表3可以确定对应的第一SLIV为S=2,L=2,于是可以确定对应的时域资源信息是起始符号为2,长度为2的时域资源。
第二种:在TDRA表以NCP符号为时间单元的情况下,从TDRA表中确定与TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据第三SLIV信息确定时域资源信息。
例如,基站配置的是以NCP符号为时间单元的TDRA表(如表2所示),基站为终端分配的时域资源对应的TDRA索引为表2中的3,基站接收到上述DCI后,从中确定获取对应的第二SLIV信息为S=2,L=2,但时间单元为NCP符号,因此需要将第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,进而确定对应的时域资源信息。
上述将以NCP符号为时间单元的第二SLIV信息,转换为以ECP符号为时间单元的第三SLIV信息,可以通过下列方式实现:
将第二SLIV信息的起始符号与11中的较小者,作为第三SLIV信息的起始符号;将第二SLIV信息的长度与12中的较小者,作为第三SLIV信息的长度。
例如,基站使用表2(以NCP符号为时间单元的TDRA表),将表2中的TDRA索引4对应的时域资源分配给广播组播业务,并通过DCI将上述信 息发送给终端,终端接收到DCI后从DCI的TDRA指示域中确定第二SLIV信息中S=2,L=12,用上述方式可以确定一ECP符号为时间单元的第三SLIV信息中S=2,L=11。这样可以将以NCP符号为时间单元的TDRA表中的TDRA索引,直接用于ECP时隙,提高了通信双方的工作效率。
上述将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,还可以通过计算的方式实现,具体如下:
采用第一公式对第二SLIV信息的起始符号进行计算,获得第三SLIV信息的起始符号;采用第二公式对二SLIV信息的长度进行计算,获得第三SLIV信息的长度;
其中,第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为第三SLIV信息的起始符号,S为第二SLIV信息的起始符号,L_ECP为第三SLIV信息的长度,L为第二SLIV信息的长度,NCP_duration为NCP的符号长度,ECP_duration为ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
以SCS=15kHz为例,NCP_duration=2192、ECP_duration=2560(参考图2),计算S_ECP时,当S≤6时delta=16,当S>6时delta=32;计算L_ECP时,当S+L包含符号0时delta=16,当S+L包含符号0和7时delta=32。
因此,采用上述第一公式,对以NCP符号为时间单元的所有起始符号(记为NCP起始符号)的取值(0~12)进行计算,得到对应的以ECP符号为时间单元(记为ECP起始符号)的起始符号(0~11),如表7所示,为本发明实施例提供的NCP起始符号和ECP起始符号的换算结果对应关系表。
表7
采用上述第二公式,当S=0时对以NCP符号为时间单元的所有长度(记为NCP符号个数)的取值(2~14)进行计算,得到对应的以ECP符号为时间单元(记为ECP符号个数)的起始符号(1~12),如表8所示,为本发明实施例提供的S为0时NCP符号长度和ECP符号长度的换算结果对应关系表。
表8
同理,可以计算出S为0~6时,NCP符号长度和ECP符号长度的换算结果对应关系表。如,请参见表9为本发明实施例提供的S为7时NCP符号长度和ECP符号长度的换算结果对应关系表。
表9
同理,可以计算出S为7~12时,NCP符号长度和ECP符号长度的换算结果对应关系表。
在NR系统中,SCS的取值还可以为其它,对应的NCP符号、ECP符号的时间长度不同,相应的可以采用上述方式将不同SCS下以NCP符号为时间单元的第二SLIV信息,转换为以ECP符号为时间单元的第三SLIV信息。
一种可能的实施方式,将第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,还可以通过下列方式实现:
在第二SLIV信息的起始符号小于或等于6的情况下,将第二SLIV信息的起始符号作为第三SLIV信息的起始符号;
在第二SLIV信息的起始符号大于或等于7的情况下,将第二SLIV信息的起始符号与1的差值作为第三SLIV信息的起始符号;
在第二SLIV信息的长度小于或等于7的情况下,将第二SLIV信息的长度与1的差值作为第三SLIV信息的长度;
在第二SLIV信息的长度大于或等于8的情况下,将第二SLIV信息的长度与2的差值作为第三SLIV信息的长度。
通过上述方式可以快速将第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,从而提高终端的处理效率,降低终端的运算量。
当基站在TDRA表中新增CP符号类型(如表4所示),终端在获取TDRA索引后可以直接确定对应SLIV信息采用的是NCP符号还是ECP符号,若SLIV信息采用的是NCP符号,可以采用上述将第二SLIV信息转换为第三SLIV信息的方式进行转换。
在本发明提供的实施例中,TDRA表中的SLIV信息具体采用何种CP类型符号可以由基站和终端的接口协议确定,CP类型符号不同,SLIV信息的起始符号的采样点位置不同,如图9所示为本发明实施例提供的一个时隙中NCP符号和ECP符号对应的采样点位置示意图。图9是以SCS=15kH为例,假设指示的SLIV信息(ECP符号)的起始符号S=6,若起始符号按照NCP符号长度计算,在S=6的对应采样点数为:13168;若起始符号按照ECP符号长度计算,在S=6的对应样点数为:15360。
终端从动态信令中获取ECP时隙对应的时域资源信息的第二种方式:终端从间接指示ECP时隙的DCI中,获取ECP时隙对应的时域资源信息。
终端从间接指示ECP时隙的DCI中,获取ECP时隙对应的时域资源信息,包括以下几种实现方式:
终端读取MCS索引,若MCS索引小于MCS门限,获取ECP时隙对应的时域资源;其中,MCS门限为区分ECP时隙和NCP时隙的临界值;
或,终端基于预设频域资源块与频域资源分配FDRA信息指示的频域资源范围的包含关系,获取ECP时隙对应的时域资源;
或,终端基于预设频率阈值与FDRA信息指示的频域资源范围的结束位置的大小关系,获取ECP时隙对应的时域资源。
例如,基站与终端约定MCS索引大于或等于MCS门限时,CP类型符号为ECP符号,MCS索引小于MCS门限时,CP类型符号为NCP符号。当基站将大于或等于MCS门限的MCS索引,携带在DCI中发送给终端后,终端可以确定时域资源采用的是ECP符号。或者基站通过信令消息指示终端,MCS索引与ECP符号/NCP符号的对应关系后,终端根据接收到的MCS索引及上述对应关系,可以确定时域资源采用的是NCP符号还是ECP符号。
如图6所示,基站与终端约定:包含预设频域资源块(80)的频域资源范围采用的是ECP时隙,则终端在接收到FDRA信息后,确定FDRA信息指示的频域资源范围(0~100)中包含预设频域资源块(80),确定采用的是ECP符号。若FDRA信息指示的频域资源范围是0~60,则终端可以确定采用的是NCP符号。
如图7所示,基站与终端约定:频域资源范围的结束频域位置大于或等于预设频率阈值(65),采用的是ECP符号,小于65采用的是NCP符号。若终端在接收到FDRA信息指示频域范围为0~100(结束位置为100),可以确定采用的是ECP符号;若终端在接收到FDRA信息指示频域范围为0~60(结束位置为60),可以确定采用的是NCP符号。
当基站是在时隙格式表中增加ECP符号的相关信息时,终端接收动态指示扩展循环前缀ECP时隙的动态信令,可以通过下列方式实现:
动态指令包括DCI中的SFI时,终端从SFI获取时隙格式的指示信息;其中,时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
如表6所示,基站在SFI中指示时隙格式的索引为56,则基站从aSFI中获取索引56后,可以确定对应时隙采用的是全下行的ECP符号。若SFI中指示的是一个时隙格式组合,根据表6可以确定时隙格式组合中各个时隙对应的符号。
由于表6是以NCP符号为时间单元表示的,因此终端需要根据时隙格式中以NCP符号为时间单元的时隙位置信息转换为以ECP符号为时间单元的时隙位置信息(包括起始符号位置和包含ECP符号的个数),可以采用将第二SLIV信息转换为第三SLIV信息相同的方式确定,即:
在时隙格式表中E符号起始位置小于或等于6的情况下,ECP时隙的起始符号ECP_S等于表格中的数值;
在时隙格式表中E符号起始大于或等7的情况下,ECP符号的起始符号ECP_S等于表格中的数值-1;
在时隙格式表中E符号的个数小于等于7的情况下,ECP符号的符号个 数ECP_L等于表格中的数值-1;
在时隙格式表中E符号的个数大于等于8的情况下,ECP符号的符号个数ECP_L于表格中的数值-2。
如表6中的第56行,ECP_S=0,ECP_L=14-2=12,表6中的第57行,ECP_S=6,ECP_L=7-1=6。
一种可能的实施方式,ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
例如基站向边缘小区中的终端发送的SFI中指示ECP符号的时隙格式中包含的时隙个数为1024或2048,终端可以有较长的时间检测到上述信息,避免漏检。
一种可能的实施方式,终端从SFI获取时隙格式的指示信息之前,还包括:
终端用指定标识号检测DCI;其中,指定标识号用于加扰指示ECP时隙的DCI;在确定DCI使用指定标识号加扰的情况下,确定DCI中携带SFI。
例如,基站在指示广播组播业务的时域资源(使用ECP符号)时,可以用指定标识符号(如ECP_RNTI)对携带上述指示信息的DCI进行加扰,需要获取上述广播组播业务的终端,使用上述指定标识符号对加扰后的DCI进行检测,可以获取对应的时域资源,而不需要获取上述广播组播业务的终端未使用指定标识符号检测DCI,则无法获取对应的时域资源。
通常,PDSCH调度分为Type A、Type B两种类型,不同类型对PDSCH的起始符号和调度符号长度(或符号个数)有不同约束,如表10所示,表10为PDSCH对应不同调度类型是有效起始符号(S)和符号长度(L)的组合表。
表10
当PDSCH的调度类型为Type A时,计算ECP调度符号的S和L可以采用本发明体用的实施例中的方案实现。
当PDSCH的调度类型为Type B时,计算ECP调度符号的S和L需要进一步的限制,如将ECP对应的S限制在0到10,ECP对应的L限制在2,4,6三个数值。
需要说明的是:对于分配PDSCH的参数L,可以称之为符号个数,也可以称之为符号长度;在上述实施例中,用于确定ECP调度符号时,起始符号S和符号长度L,即可应用于动态确定ECP符号/时隙,也可用其它方式确定ECP符号/时隙(如:通过高层信令的半静态和静态方法)。
如图10所示,本发明实施例提供的一种基站,包括存储器1001,收发机1002,处理器1003:
存储器1001,用于存储计算机程序;收发机1002,用于在所述处理器1003的控制下收发数据;处理器1003,用于读取所述存储器1001中的计算机程序并执行以下操作:
生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
向终端发送所述动态信令。
一种可能的实施方式,所述动态信令包括DCI,所述处理器1003还用于:
生成直接指示所述ECP时隙所在PDSCH的DCI;
或,生成间接指示所述ECP时隙的DCI。
一种可能的实施方式,所述处理器1003还用于:
在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号; 其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述处理器1003还用于:
生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;
或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
一种可能的实施方式,所述处理器1003还用于:
在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;
在所述DCI的TDRA指示域中指示所述索引。
一种可能的实施方式,所述处理器1003还用于:
在时隙格式表中增加ECP符号相关的信息;
基于所述时隙格式表,生成所述ECP时隙的SFI;
将所述SFI携带在DCI中,获得所述动态指令。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述处理器1003还用于:
将所述SFI携带在DCI中,获得所述动态指令之后,用指定标识符对所述DCI进行加扰;其中,所述指定标识符用于对指示所述ECP时隙的DCI加扰;
向所述终端发送加扰后的DCI。
收发机1002,用于在处理器1003的控制下接收和发送数据。
其中,在图10中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1003代表的一个或多个处理器和存储器1001代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1002可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括无线信道、有线信道、光缆等传输介质。处理器1003负责管理总线架构和通常的处理,存储器1001可以存储处理器1003在执行操作时所使用的数据。
处理器1003可以是中央处埋器(CPU)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)或复杂可编程逻辑器件(Complex Programmable Logic Device,CPLD),处理器也可以采用多核架构。
如图11所示,本发明实施例提供一种终端,包括存储器1101,收发机1102,处理器1103:
存储器1101,用于存储计算机程序;收发机1102,用于在所述处理器1103的控制下收发数据;处理器1103,用于读取所述存储器1101中的计算机程序并执行以下操作:
接收动态指示扩展循环前缀ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
从所述动态信令中获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述动态信令包括所述DCI,所述处理器1103还 用于:
从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;
或,从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述处理器1103还用于:
读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;
或,基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
一种可能的实施方式,所述处理器1103还用于:
从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述处理器1103还用于:
从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;
基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
一种可能的实施方式,所述处理器1103还用于:
在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;
或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
一种可能的实施方式,所述处理器1103还用于:
将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;
将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
一种可能的实施方式,所述处理器1103还用于:
采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;
采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;
其中,所述第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
一种可能的实施方式,所述处理器1103还用于:
在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;
在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
一种可能的实施方式,动态信令包括DCI中的时隙格式指示信息SFI,所述处理器1103还用于:
从SFI获取时隙格式的指示信息;其中,时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述处理器1103还用于:
从SFI获取时隙格式的指示信息之前,用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;
在确定所述DCI使用所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
收发机1102,用于在处理器1103的控制下接收和发送数据。
其中,在图11中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器1103代表的一个或多个处理器和存储器1101代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机1102可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的单元,这些传输介质包括,这些传输介质包括无线信道、有线信道、光缆等传输介 质。针对不同的用户设备,用户接口1104还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器1103负责管理总线架构和通常的处理,存储器1101可以存储处理器1103在执行操作时所使用的数据。
可选的,处理器1103可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit,专用集成电路)、FPGA(Field-Programmable Gate Array,现场可编程门阵列)或CPLD(Complex Programmable Logic Device,复杂可编程逻辑器件),处理器也可以采用多核架构。
处理器通过调用存储器存储的计算机程序,用于按照获得的可执行指令执行本申请实施例提供的任一所述方法。处理器与存储器也可以物理上分开布置。
在此需要说明的是,本发明实施例提供的上述装置,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于同一发明构思,本发明一实施例中提供一种基站,该基站的动态指示ECP时隙方法的具体实施方式可参见方法实施例部分的描述,重复之处不再赘述,请参见图12,该基站包括:
生成单元1201,用于生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
发送单元1202,用于向终端发送所述动态信令。
一种可能的实施方式,所述动态信令包括所述DCI,所述生成单元1201还用于:
生成直接指示所述ECP时隙所在PDSCH的DCI;
或,生成间接指示所述ECP时隙的DCI。
一种可能的实施方式,所述生成单元1201还用于:
在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域 占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述生成单元1201还用于:
生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;
或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
一种可能的实施方式,所述生成单元1201还用于:
在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;
在所述DCI的TDRA指示域中指示所述索引。
一种可能的实施方式,所述生成单元1201还用于:
在时隙格式表中增加ECP符号相关的信息;
基于所述时隙格式表,生成所述ECP时隙的SFI;
将所述SFI携带在DCI中,获得所述动态指令。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述生成单元1201还用于:
将所述SFI携带在DCI中,获得所述动态指令之后,用指定标识符对所述DCI进行加扰;其中,所述指定标识符用于对指示所述ECP时隙的DCI加扰;
向所述终端发送加扰后的DCI。
基于同一发明构思,本发明一实施例中提供一种终端,该终端的动态指示ECP时隙方法的具体实施方式可参见方法实施例部分的描述,重复之处不再赘述,请参见图13,该终端包括:
接收单元1301,用于接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;
获取单元1302,用于从所述动态信令中获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述动态信令包括DCI,所述获取单元1302还用于:
从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;
或,从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
一种可能的实施方式,所述获取单元1302还用于:
读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;
或,基于预设频域资源块与FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;
或,基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位 置的大小关系,获取所述ECP时隙对应的时域资源。
一种可能的实施方式,所述获取单元1302还用于:
从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
一种可能的实施方式,所述预设指示域,包括:
在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;
或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
一种可能的实施方式,所述被重新解释或定义的指示域,包括:
上行控制信道功率控制的比特域;
或,用于指示上行或下行调度信令的指示信息。
一种可能的实施方式,所述获取单元1302还用于:
从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;
基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
一种可能的实施方式,所述获取单元1302还用于:
在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;
或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
一种可能的实施方式,所述获取单元1302还用于:
将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;
将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
一种可能的实施方式,所述获取单元1302还用于:
采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;
采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;
其中,所述第一公式包括:
S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);
所述第二公式包括:
L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);
S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
一种可能的实施方式,所述获取单元1302还用于:
在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;
在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;
在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
一种可能的实施方式,动态信令包括DCI中的时隙格式指示信息SFI,所述接收单元1301还用于:
从SFI获取时隙格式的指示信息;其中,时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
一种可能的实施方式,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
一种可能的实施方式,所述接收单元1301还用于:
用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;
在确定所述DCI使用所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
需要说明的是,本申请实施例中对单元的划分是示意性的,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。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。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的单元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,可以存储在一个处理器可读取存储介质中。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全部或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)或处理器(processor)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。
在此需要说明的是,本发明实施例提供的上述装置,能够实现上述方法实施例所实现的所有方法步骤,且能够达到相同的技术效果,在此不再对本实施例中与方法实施例相同的部分及有益效果进行具体赘述。
基于同一发明构思,本发明实施例还提一种处理器可读存储介质,所述处理器可读存储介质存储有计算机程序,所述计算机程序用于使所述处理器执行如上终端侧或基站侧所述的动态指示ECP时隙的方法。
所述处理器可读存储介质可以是处理器能够存取的任何可用介质或数据存储设备,包括但不限于磁性存储器(例如软盘、硬盘、磁带、磁光盘(MO)等)、光学存储器(例如CD、DVD、BD、HVD等)、以及半导体存储器(例如ROM、EPROM、EEPROM、非易失性存储器(NAND FLASH)、固态硬盘(SSD))等。
本领域内的技术人员应明白,本申请的实施例可提供为方法、系统、或计算机程序产品。因此,本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机可执行指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机可执行指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些处理器可执行指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的处理器可读存储器中,使得存储在该处理器可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些处理器可执行指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本 申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包含这些改动和变型在内。
Claims (40)
- 一种动态指示ECP时隙的方法,其特征在于,该方法包括:终端接收动态指示扩展循环前缀ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;所述终端从所述动态信令中获取所述ECP时隙对应的时域资源信息。
- 如权利要求1所述的方法,其特征在于,所述动态信令包括下行链路控制信息DCI,所述终端从所述动态信令中获取所述ECP时隙对应的时域资源信息,包括:所述终端从直接指示所述ECP时隙所在物理下行共享信道PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;或,所述终端从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
- 如权利要求2所述的方法,其特征在于,所述终端从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息,包括:所述终端读取调制与编码策略MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;或,所述终端基于预设频域资源块与频域资源分配FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;或,所述终端基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
- 如权利要求2所述的方法,其特征在于,所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源,包括:所述终端从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
- 如权利要求4所述的方法,其特征在于,所述预设指示域,包括:在所述DCI中新增的指示域,所述新增的指示域用于指示CP类型符号;其中,所述CP类型符号包括普通循环前缀NCP符号或/和ECP符号;或,所述DCI中一个被重新解释或定义的指示域,所述被重新解释或定义的指示域用于指示所述CP类型符号。
- 如权利要求5所述的方法,其特征在于,所述被重新解释或定义的指示域,包括:上行控制信道功率控制的比特域;或,用于指示上行或下行调度信令的指示信息。
- 如权利要求2所述的方法,其特征在于,所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源,包括:从所述DCI的时域资源分配TDRA指示域中,获取所述时域资源的TDRA索引;基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
- 如权利要求7所述的方法,其特征在于,基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息,包括:在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
- 如权利要求8所述的方法,其特征在于,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,包括:将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
- 如权利要求8所述的方法,其特征在于,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,包括:采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;其中,所述第一公式包括:S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);所述第二公式包括:L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
- 如权利要求8所述的方法,其特征在于,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,包括如下至少一个步骤:在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV信息的长度与2的差值作为所述第三SLIV信息的长度。
- 如权利要求1所述的方法,其特征在于,所述动态信令包括DCI中的时隙格式指示信息SFI,终端接收动态指示ECP时隙的动态信令,包括:所述终端从所述SFI获取时隙格式的指示信息;其中,所述时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
- 如权利要求12所述的方法,其特征在于,所述ECP符号的时隙格式中包含的时隙个数包括1024或者2048。
- 如权利要求12所述的方法,其特征在于,所述终端从SFI获取时隙格式的指示信息之前,还包括:所述终端用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;在确定所述DCI使用所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
- 一种动态指示ECP时隙的方法,其特征在于,包括:基站生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;所述基站向终端发送所述动态信令。
- 如权利要求15所述的方法,其特征在于,所述动态信令包括DCI,基站生成动态指示ECP时隙的动态信令,包括:生成直接指示所述ECP时隙所在PDSCH的DCI;或,生成间接指示所述ECP时隙的DCI。
- 如权利要求16所述的方法,其特征在于,生成直接指示所述ECP时隙所在PDSCH的DCI,包括:所述基站在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特。
- 如权利要求16所述的方法,其特征在于,生成间接指示所述ECP时隙的DCI,包括:生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一 FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
- 如权利要求16所述的方法,其特征在于,生成直接指示所述ECP时隙所在PDSCH的DCI,包括:所述基站在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;所述基站根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;所述基站在所述DCI的TDRA指示域中指示所述索引。
- 如权利要求15所述的方法,其特征在于,基站生成动态指示ECP时隙的动态信令,包括:所述基站在时隙格式表中增加ECP符号相关的信息;所述基站基于所述时隙格式表,生成所述ECP时隙的SFI;将所述SFI携带在DCI中,获得所述动态指令。
- 如权利要求20所述的方法,其特征在于,将所述SFI携带在DCI中,获得所述动态指令之后,还包括:所述基站用指定标识符对所述DCI进行加扰;其中,所述指定标识符用于对指示所述ECP时隙的DCI加扰;所述基站向所述终端发送加扰后的DCI。
- 一种终端,其特征在于,包括存储器,收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行以下操作:终端接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;所述终端从所述动态信令中获取所述ECP时隙对应的时域资源信息。
- 如权利要求22所述的终端,其特征在于,所述动态信令包括DCI,所述处理器还用于:所述终端从直接指示所述ECP时隙所在PDSCH的DCI,获取所述ECP时隙对应的时域资源信息;或,所述终端从间接指示所述ECP时隙的DCI中,获取所述ECP时隙对应的时域资源信息。
- 如权利要求23所述的终端,其特征在于,所述处理器还用于:所述终端读取MCS索引,若所述MCS索引小于MCS门限,获取所述ECP时隙对应的时域资源;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;或,所述终端基于预设频域资源块与FDRA信息指示的频域资源范围的包含关系,获取所述ECP时隙对应的时域资源;或,所述终端基于预设频率阈值与FDRA信息指示的频域资源范围的结束频域位置的大小关系,获取所述ECP时隙对应的时域资源。
- 如权利要求23所述的终端,其特征在于,所述处理器还用于:所述终端从所述DCI的预设指示域中,获取所述ECP时隙对应的时域资源信息;其中,所述预设指示域占用1比特。
- 如权利要求23所述的终端,其特征在于,所述处理器还用于:从所述DCI的TDRA指示域中,获取所述时域资源的TDRA索引;基于所述TDRA索引及对应的TDRA表,确定所述时域资源信息。
- 如权利要求26所述的终端,其特征在于,所述处理器还用于:在所述TDRA表以ECP符号为时间单元的情况下,根据所述TDRA索引在所述TDRA表中对应的第一起始/长度SLIV信息,确定所述时域资源信息;或,在所述TDRA表以NCP符号为时间单元的情况下,从所述TDRA表中确定与所述TDRA索引对应的以NCP符号为时间单元的第二SLIV信息,将所述第二SLIV信息转换为以ECP符号为时间单元的第三SLIV信息,并根据所述第三SLIV信息确定所述时域资源信息。
- 如权利要求27所述的终端,其特征在于,所述处理器还用于:将所述第二SLIV信息的起始符号与11中的较小者,作为所述第三SLIV信息的起始符号;将所述第二SLIV信息的长度与12中的较小者,作为所述第三SLIV信息的长度。
- 如权利要求27所述的终端,其特征在于,所述处理器还用于:采用第一公式对所述第二SLIV信息的起始符号进行计算,获得所述第三SLIV信息的起始符号;采用第二公式对所述二SLIV信息的长度进行计算,获得所述第三SLIV信息的长度;其中,所述第一公式包括:S_ECP=ceil((S*NCP_duration+delta)/ECP_duration);所述第二公式包括:L_ECP=floor(((S+L)*NCP_duration+delta)/ECP_duration-S_ECP);S_ECP为所述第三SLIV信息的起始符号,S为所述第二SLIV信息的起始符号,L_ECP为所述第三SLIV信息的长度,L为所述第二SLIV信息的长度,NCP_duration为所述NCP的符号长度,ECP_duration为所述ECP的符号长度,delta为CP增量,ceil()为向上取整的函数,floor()为向下取整的函数。
- 如权利要求27所述的终端,其特征在于,所述处理器还用于:在所述第二SLIV信息的起始符号小于或等于6的情况下,将所述第二SLIV信息的起始符号作为所述第三SLIV信息的起始符号;在所述第二SLIV信息的起始符号大于或等于7的情况下,将所述第二SLIV信息的起始符号与1的差值作为所述第三SLIV信息的起始符号;在所述第二SLIV信息的长度小于或等于7的情况下,将所述第二SLIV信息的长度与1的差值作为所述第三SLIV信息的长度;在所述第二SLIV信息的长度大于或等于8的情况下,将所述第二SLIV 信息的长度与2的差值作为所述第三SLIV信息的长度。
- 如权利要求22所述的终端,其特征在于,所述动态信令包括DCI中的SFI,所述处理器还用于:所述终端从所述SFI获取时隙格式的指示信息;其中,所述时隙格式的指示信息根据包括ECP符号的时隙格式的时隙格式表生成。
- 如权利要求31所述的终端,其特征在于,所述处理器还用于:所述终端从所述SFI获取时隙格式的指示信息之前,所述终端用指定标识号检测DCI;其中,所述指定标识号用于加扰指示所述ECP时隙的DCI;在确定所述DCI使用的是所述指定标识号加扰的情况下,确定所述DCI中携带所述SFI。
- 一种基站,其特征在于,包括存储器,收发机,处理器:存储器,用于存储计算机程序;收发机,用于在所述处理器的控制下收发数据;处理器,用于读取所述存储器中的计算机程序并执行以下操作:生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;向终端发送所述动态信令。
- 如权利要求33所述的基站,其特征在于,所述动态信令包括所述DCI,所述处理器还用于:生成直接指示所述ECP时隙所在PDSCH的DCI;或,生成间接指示所述ECP时隙的DCI。
- 如权利要求34所述的基站,其特征在于,所述处理器还用于:在所述DCI的预设指示域中指示所述ECP时隙;其中,所述预设指示域占用1比特;或,生成大于或等于MCS门限的MCS索引,并在所述DCI中携带所述MCS索引;其中,所述MCS门限为区分所述ECP时隙和NCP时隙的临界值;或,基于预设频域资源块与第一FDRA的包含关系,生成携带所述第一FDRA的DCI;其中,所述包含关系用于指示调度ECP符号或者NCP符号;或,基于预设频率阈值与第二FDRA的结束频域位置的大小关系,生成携带所述第二FDRA的DCI;其中,所述大小关系用于指示调度ECP符号或者NCP符号。
- 如权利要求34所述的基站,其特征在于,所述处理器还用于:在TDRA表配置项中增加指示调度符号的CP类型符号;其中,所述CP类型符号包括NCP符号或/和ECP符号;根据所述PDSCH所在时隙的起止位置从所述TDRA表中确定对应的索引;在所述DCI的TDRA指示域中指示所述索引。
- 如权利要求33所述的基站,其特征在于,所述处理器还用于:在时隙格式表中增加ECP符号相关的信息;基于所述时隙格式表,生成所述ECP时隙的SFI;将所述SFI携带在DCI中,获得所述动态指令。
- 一种基站,其特征在于,包括:生成单元,用于生成动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;发送单元,用于向终端发送所述动态信令。
- 一种终端,其特征在于,包括:接收单元,用于接收动态指示ECP时隙的动态信令;其中,所述ECP时隙包括至少一个ECP符号;获取单元,用于从所述动态信令中获取所述ECP时隙对应的时域资源信息。
- 一种处理器可读存储介质,其特征在于,所述处理器可读存储介质存储有计算机程序,所述计算机程序用于使所述处理器执行权利要求1至21任一项所述的方法。
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| US20210168807A1 (en) * | 2017-08-14 | 2021-06-03 | Electronics And Telecommunications Research Institute | Method for transmitting and receiving slot setting information in communication system |
| WO2021159344A1 (zh) * | 2020-02-12 | 2021-08-19 | 华为技术有限公司 | 一种同步信号块的发送方法、接收方法及装置 |
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| WO2021159344A1 (zh) * | 2020-02-12 | 2021-08-19 | 华为技术有限公司 | 一种同步信号块的发送方法、接收方法及装置 |
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