WO2019128760A1 - Message receiving method and terminal - Google Patents

Abstract

Disclosed are a message receiving method and a terminal. The method comprises: transmitting a random access preamble to a network device on at least one transmission beam; monitoring, on each receiving beam of at least one receiving beam, at least one random access response message sent by the network device by using the at least one transmission beam, until a target random access response message that meets a preset condition is received on a target receiving beam, wherein the monitoring operation is stopped after the target random access response message is received; and in response to the target random access response message, using the target receiving beam to complete a subsequent random access process. The present application facilitates implementing a selection for a beamforming-based random access response message in a random access process, and improves the quality of random access.

Description

Message receiving method and terminal

This application claims the priority of the Chinese Patent Application, filed on Dec. 26, 2017, filed on Jan. .

Technical field

The present application relates to the field of communications technologies, and in particular, to a message receiving method and a terminal.

Background technique

The random access process is an important process of the wireless communication system. The user equipment (User Equipment, abbreviated as UE) can establish a connection with the base station through a random access procedure and obtain uplink synchronization, thereby communicating with the base station. The random access procedure is as follows: the UE sends a random access preamble (MSA1 message) to the base station. After receiving the preamble, the base station sends a random access response (RAR) message to the UE, that is, the MSG2. The UE monitors the physical downlink control channel (Physical Downlink Control Channel, PDCCH) in the RAR time window. If the MSG2 message of the UE is not received in the RAR time window, the random access procedure is considered to be invalid. The UE receives the MSG2 message of the UE, and the UE sends the MSG3 message carrying the unique identifier of the UE to the base station. After receiving the MSG3 message, the base station sends an MSG4 message to the UE, where the MSG4 message carries the unique identifier of the UE; the UE successfully receives the message. After the MSG4, it is determined that the random access procedure is successful.

In the 5G communication technology, the spectrum resources of the high frequency band are applied. Since the wireless signals in the high frequency band experience more severe fading in the spatial propagation process, the beamforming (Beamforming, abbreviated: BF) technology is introduced in the 5G communication technology to increase Signal coverage overcomes path fading in high frequency bands. Both the base station side and the UE side can employ beamforming techniques. At this time, the base station and the UE have respective antenna arrays and a plurality of differently directed beams, so that there is a beam alignment process when the base station and the terminal communicate. For example, the UE may switch the different uplink transmit beams (TX beams) to send the MSG1, that is, the preamble message, and the base station may also use the different downlink TX beams to send the corresponding MSG2 message, so that the UE may receive multiple MSG2 messages, and only select the most. An excellent transmit beam or receive beam can obtain the best communication quality, which makes the process of random access more complicated and the access delay becomes longer. Thus, when there are multiple messages to be received in the system, such as the MSG2 message described above, how to determine the message that is needed by itself becomes critical.

Summary of the invention

The embodiment of the invention provides a message receiving method and a terminal, which are helpful for implementing selection of a random access response message based on beamforming in a random access process, and improving random access quality.

In one aspect, the present application provides a message receiving method, including: a terminal transmitting a random access preamble to a network device on at least one transmit beam; listening to the network device using at least one transmit on each receive beam of the at least one receive beam At least one random access response message sent by the beam until a target random access response message meeting the preset condition is received on the target receiving beam, wherein the listening operation is stopped after receiving the target random access response message; The target receive beam is used to complete subsequent information reception in response to the target random access response message. For example, the terminal can use the target receive beam to complete subsequent random access procedures, such as receiving MSG4 messages and the like. Therefore, the terminal can quickly implement the selection of the beamforming-based random access response message in the random access process, and then complete the subsequent random access process by using the beam corresponding to the selected random access response message, thereby reducing random access. Delay.

The transmit beam corresponding to each random access response message may be different, for example, the at least one random access response message is sent by the same network device or different network devices to the terminal by using different transmit beams; for example, each random access The receiving beam corresponding to the response message may be different. For example, the at least one random access response message may be a random access response message from the same network device or a different network device that is received by the terminal by using different receiving beams. For example, each of the random access response messages has different transmit beams and receive beams. For example, the at least one random access response message is sent by the same network device or different network devices to different terminals, and the terminal uses different receive beams. Received.

In a possible design, the using the target receive beam to complete the subsequent random access process comprises: using the target receive beam and the target transmit beam corresponding to the target receive beam to complete a subsequent random access procedure. That is to say, the terminal may also determine a target transmit beam according to the target receive beam, and then perform subsequent information transmission by using the target transmit beam. For example, the terminal may use the target transmit beam to complete a subsequent random access procedure, such as sending an MSG3 message and the like.

In a possible design, in a case where a beam reciprocity relationship between a receiving beam and a transmitting beam is preset, the terminal may determine a transmitting beam having a beam reciprocity relationship with the target receiving beam as the target transmitting beam. .

In a possible design, when the target random access response message carries the information of the transmit beam, the terminal may use the transmit beam indicated by the information of the transmit beam carried in the target random access response message as the Target transmit beam.

In a possible design, if the terminal transmits the random access preamble and uses the determined transmit beam to send the random access preamble, the terminal may also use the determined transmit beam as the target transmit beam.

In a possible design, the monitoring, by the network device, the at least one random access response message sent by using the at least one transmit beam comprises: listening to at least one sent by the network device using at least one transmit beam within a preset receive time window. Random access response message. Optionally, the receiving time window may be preset or may be notified to the terminal by using a network device, which is not limited in this application.

In a possible design, the preset condition includes: the receiving parameter of the target random access response message meets a preset threshold. Optionally, the receiving parameter may include at least one of a reference signal receiving power, a bit error rate, and a channel quality parameter, where the channel quality parameter may include a radio channel rms value delay, a reference signal receiving quality, and a received signal strength. At least one of the indications. The preset threshold is corresponding to the receiving parameter. For example, when the receiving parameter is the reference signal receiving power, the preset threshold may be a preset power threshold. If the receiving parameter is the error rate, the preset threshold may be For the default bit error rate threshold, etc., not listed here. Therefore, after receiving the target random access response message that the receiving parameter meets the preset threshold, the terminal may stop the listening operation and determine that the random access response message is successfully received. The subsequent information transmission may be performed by using the receive beam and/or the transmit beam corresponding to the target random access response message. This reduces the random access delay and reduces the terminal overhead.

In a possible design, the terminal may further receive an indication message sent by the network device, where the target random access response message of the preset condition is indicated by the indication message. Optionally, the target random access response message indicated by the indication message may be a random access response message received by the terminal first. Therefore, after receiving the target random access response message indicated by the indication message, the terminal may stop the listening operation and determine that the random access response message is successfully received. The subsequent information transmission may be performed by using the receive beam and/or the transmit beam corresponding to the target random access response message. Thereby, the random access delay is reduced, the efficiency of random access is improved, and the terminal overhead is reduced.

In a possible design, the indication message may be a Radio Resource Control (RRC) message, or may be a system message, etc., which is not limited in this application.

In another aspect, the present application further provides a message receiving method, including: a terminal transmitting a random access preamble to a network device on at least one transmit beam; and receiving, by using at least one receive beam on each receive beam, the network device to use at least Transmitting at least one random access response message sent by the beam to obtain a plurality of random access response messages; determining a target random access response message from the plurality of random access response messages; responding to the target random access response message The target receiving beam is used to complete subsequent information reception. For example, the terminal may use the target receiving beam corresponding to the target random access response message to complete a subsequent random access procedure, such as receiving an MSG4 message. Therefore, the terminal can implement the selection of the beamforming-based random access response message in the random access process based on the quality of the received parameter, and further complete the subsequent random access process by using the beam corresponding to the selected random access response message, thereby improving The quality of the random access signal improves the reliability of subsequent information transmission.

In a possible design, the using the target random access response message corresponding to the target receiving beam to complete the subsequent random access process comprises: using the target random receiving response message corresponding to the target receiving beam and receiving the target The target transmit beam corresponding to the beam completes the subsequent random access process. That is to say, the terminal may also determine a target transmit beam according to the target receive beam, and then perform subsequent information transmission by using the target transmit beam. For example, the terminal may use the target transmit beam to complete a subsequent random access procedure, such as sending an MSG3 message and the like.

In a possible design, the receiving, by the network device, the at least one random access response message sent by using the at least one transmit beam comprises: receiving at least one sent by the network device by using at least one transmit beam within a preset receive time window. Random access response message. Optionally, the receiving time window may be preset or may be notified to the terminal by using a network device, which is not limited in this application.

In a possible design, the target random access response message has an optimal receiving parameter in the plurality of random access response messages. Optionally, the receiving parameter includes at least one of a reference signal receiving power, a bit error rate, and a channel quality parameter, where the channel quality parameter includes a radio channel rms value delay, a reference signal receiving quality, and a received signal strength indicator. At least one of them. Therefore, the terminal may select, as the target random access response message, the random access response message that receives the parameter optimal in the received multiple random access response messages after the end of the receiving time window. The subsequent information transmission may be performed by using the receive beam and/or the transmit beam corresponding to the target random access response message. This improves the quality of the signals transmitted by subsequent messages.

In another aspect, the present application provides a terminal having a function of implementing terminal behavior in the above method example. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one possible design, the structure of the terminal includes a processing unit and a communication unit, the processing unit being configured to support the terminal to perform a corresponding function in the above method. The communication unit is configured to support communication between the terminal and other devices such as network devices. The terminal may further include a storage unit for coupling with the processing unit, which stores program instructions and data necessary for the terminal. As an example, the processing unit can be a processor, the communication unit can be a transceiver, and the storage unit can be a memory.

In still another aspect, the present application provides a communication system including the terminal and/or network device of the above aspect. In another possible design, the system may also include other devices in the solution provided by the present application that interact with the terminal or network device.

In still another aspect, the present application provides a computer storage medium for storing computer software instructions for use in the terminal described above, including a program designed to perform the above aspects.

In yet another aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.

In yet another aspect, the present application provides a chip system including a processor for supporting a terminal to implement the functions involved in the above aspects, such as, for example, determining data and/or messages involved in the above methods. In a possible design, the chip system further comprises a memory for storing necessary program instructions and data of the terminal. The chip system can be composed of chips, and can also include chips and other discrete devices.

In the solution provided by the embodiment of the present invention, the terminal is configured to send, by using at least one transmit beam, a random access preamble to the network device, and at least one receive beam, to listen to the at least one random access that the network device sends by using at least one transmit beam. Responding to the message, and after determining the target random access response message, using the target receiving beam to complete the subsequent random access procedure, thereby enabling selection of a beamforming-based random access response message in the random access process, and further The subsequent random access procedure is completed by using the beam corresponding to the selected random access response message, thereby improving the random access quality.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background art, the drawings to be used in the embodiments of the present invention or the background art will be described below.

1 is an application scenario diagram of a communication system according to an embodiment of the present invention;

2a is a message receiving scene diagram provided by an embodiment of the present invention;

2b is another message receiving scene diagram provided by an embodiment of the present invention;

2c is another schematic diagram of a message receiving scene according to an embodiment of the present invention;

FIG. 2d is still another message receiving scene diagram provided by an embodiment of the present invention;

3 is a schematic diagram of interaction of a message receiving method according to an embodiment of the present invention;

4 is a schematic diagram of interaction of another message receiving method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of interaction of another message receiving method according to an embodiment of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of another terminal according to an embodiment of the present invention.

Detailed ways

The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the technical solution of the present application may be specifically applied to various communication systems using beamforming technologies, for example, a 5G system, which may also be called a New Radio (NR) system, or may be applied to the future. Other communication systems using beamforming techniques and the like are not limited in this application.

In this application, a network device may refer to an entity used to transmit or receive information in a wireless communication, such as a base station, or may be a transmission point (TP), a transmission and receiver (transmission and receiver) Point, abbreviated as: TRP), a relay device, or other network device having a base station function, etc., which is not limited in this application.

In the present application, a terminal is a device having a communication function, which may include a handheld device having a wireless communication function, an in-vehicle device, a wearable device, a computing device, or other processing device connected to a wireless modem, and the like. User equipment can be called different names in different networks, such as: terminal equipment, user equipment (User Equipment, abbreviation: UE), mobile station, subscriber unit, cellular phone, personal digital assistant, wireless modem, wireless communication device, handheld Equipment, laptops, cordless phones, wireless local loop stations, etc. The terminal can be a wireless terminal. The wireless terminal can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem, which can be accessed via a radio access network (eg, RAN, radio access) Network) communicates with one or more core networks.

In the present application, a base station, which may also be referred to as a base station device, is a device deployed in a wireless access network to provide wireless communication functions. The name of the base station may be different in different wireless access systems. For example, in a universal mobile communication system UMTS network, a base station is called a Node B (NodeB), and a base station in an LTE network is called an evolved Node B (evolved NodeB). Abbreviations: eNB or eNodeB), in the future 5G system, it can be called a Transmission Reception Point (TRP) network node or a g-NodeB (gNB), etc., which are not enumerated here. Wherein, one base station may include one or more TRPs. When a TRP is included in a base station, the TRP is a base station.

The application scenarios of this application are introduced below. For example, a network device is used as a TRP. Referring to FIG. 1, FIG. 1 is a structural diagram of a communication system according to an embodiment of the present invention. Specifically, as shown in FIG. 1 , the communication system may include a UE and at least one TRP (three TRPs are shown in FIG. 1 ), and information transmission between the UE and the TRP may be performed by using the foregoing communication system, for example, starting a random manner. Access process.

Due to the introduction of the beam, when the information is transmitted, there are often scenarios in which the UE or the TRP may receive multiple identical messages. The UE or the TRP needs to determine which message is the message that it needs, that is, select the message from the received message. For example, in the above random access procedure, after the beamforming is introduced, the UE needs to select a required target RAR message from the received RAR messages corresponding to different beams. And transmitting information according to the receiving beam and/or the transmitting beam corresponding to the target RAR message.

For example, please refer to FIG. 2a to FIG. 2d, which are diagrams of several message receiving scenarios of a random access procedure according to an embodiment of the present invention. As shown in FIG. 2a, in the random access procedure, when the UE sends a random access preamble to the TRP, if there is a determined uplink transmit beam (TX beam), such as the best UL TX beam in FIG. 2a, the UE may pass The determined uplink TX beam transmits a random access preamble, that is, an MSG1 message; the network side may have multiple TRPs (for example, the multiple TRPs may be TRPs under the same base station), and the preamble is received, and the preamble is received. Multiple TRPs may use different downlink TX beams to respectively return a random access response message (RAR message), ie, an MSG2 message, to the UE; the UE may use the determined downlink receive beam (RX beam) to listen for and/or receive the RAR message, such as The best DL RX beam in Figure 2a. As shown in FIG. 2b, when the UE sends a random access preamble to the TRP, if there is no determined uplink TX beam, the UE may perform preamble transmission by using beam sweeping, that is, using different uplink TX beams respectively. Preamble, for each preamble, the same or different TRP (when the TRP is not a base station, the different TRPs may be TRPs under the same base station) may use different downlink TX beams to respectively return RAR messages to the UE; the UE may use the determined downlink RX The beam listens and/or receives the RAR message, such as the best DL RX beam in Figure 2b. As shown in FIG. 2c, a plurality of TRPs on the network side may receive the preamble (for example, a preamble sent by the UE in the determined uplink TX beam, or a preamble sent by the UE using different uplink TX beams, which is not described here), and then received. Multiple TRPs to the preamble may respectively return RAR messages to the UE using different downlink TX beams; the UE may listen to and/or receive the RAR message using a different downlink RX beam. As shown in FIG. 2d, the UE may send the preamble to the TRP by using the determined uplink TX beam, and the TRP (for example, when the TRP is the base station) receives the preamble, and the TRP may use one or more different downlink TX beams respectively. The UE returns a RAR message; the UE may listen to and/or receive the RAR message using a different downlink RX beam. For the random access scenario based on beamforming, it is not enumerated here. That is, there are scenarios in which the UE may listen to and/or receive multiple RAR messages, and the target RAR message needs to be determined to determine the receive beam and/or the transmit beam for subsequent information transmission, such as completing a subsequent random access procedure.

The present invention discloses a message receiving method and a terminal, which are used to implement selection of a beamforming-based random access response message in a random access process, and then use a beam corresponding to the selected random access response message to complete subsequent random access. Into the process, thereby improving the quality of random access.

Referring to FIG. 2, FIG. 3 is a schematic diagram of interaction of a message receiving method according to an embodiment of the present invention. Specifically, as shown in FIG. 3, the message receiving method in the embodiment of the present invention may include the following steps:

301. The UE sends a preamble to the TRP on at least one transmit beam. Specifically, the UE may send a preamble when the random access is performed, and the preamble may be sent by the UE using the determined uplink TX beam, or may be separately sent by the UE using different uplink TX beams. In addition, the network side may have one or more TRPs receiving the preamble. For details, refer to the scenarios of Figures 2a to 2d, which are not described here.

302. The TRP sends a RAR message to the UE on the at least one transmit beam. Specifically, the one or more TRPs that the network side receives the preamble may respectively return RAR messages to the UE by using one or more different downlink TX beams.

303. The UE monitors, on each receiving beam of the at least one receiving beam, at least one RAR message that is sent by the TRP by using the at least one transmitting beam, and stops receiving the monitoring after receiving the target RAR message that the receiving parameter meets the preset threshold on the target receiving beam. operating. That is, the downlink TX beam corresponding to each RAR message may be different, or the downlink RX beam corresponding to each RAR message may be different, or the downlink TX beam and the downlink RX beam corresponding to each RAR message are different. Specifically, after receiving a RAR message, the UE may obtain the receiving parameter of the RAR message, and determine whether the receiving parameter of the RAR message meets the threshold. If the preset threshold is not met, the UE may continue to listen to and receive the RAR message in the same downlink RX beam or different other downlink RX beams, and obtain the receiving parameter of the RAR message, and determine whether the receiving parameter of the RAR message meets the threshold. Until the RAR message that the receiving parameter meets the preset threshold is received. If receiving the RAR message that the receiving parameter meets the preset threshold, the UE may stop the listening operation, determine that the RAR message is successfully received, and perform the subsequent random access procedure quickly.

Optionally, the UE may listen to the at least one RAR message sent by the TRP by using at least one transmit beam on each receive beam of the at least one receive beam within a preset receive time window. The receiving time window may be preset or may be notified to the UE by using a TRP, which is not limited in this application. Therefore, the UE can perform the listening operation within the receiving time window until the RAR message that the receiving parameter meets the preset threshold is received, then the listening operation is stopped, that is, the monitoring and receiving of the RAR message is stopped within the receiving time window. In turn, the subsequent random access process can be quickly performed, which helps to reduce the random access delay.

Further, before acquiring the receiving parameter corresponding to the RAR message, the UE may determine whether the RAR message is a message sent to itself. For example, it is determined by detecting whether the identifier carried in the RAR message is the number of the preamble, such as index, and determining that the RAR message is sent to itself when the identifier carried by the RAR message is the index of the preamble. That is to say, after the UE can listen to the RAR message sent to itself in the receiving time window, it can trigger whether the receiving parameter of the RAR message meets the threshold, so that the terminal overhead can be reduced.

Optionally, the receiving parameter may include one or more of a reference signal receiving power, a bit error rate, and a channel quality parameter, where the channel quality parameter may include a radio channel rms value delay, a reference signal receiving quality, and a receiving. One or more of the parameters such as signal strength indication. The reference signal receiving power may be Reference Signal Receiving Power (RSRP) or other parameters that characterize the received power, and the bit error rate may be a Bit Error Ratio (abbreviation: BER) or other. The parameter that characterizes the bit error rate, the channel quality parameter may be a wireless channel root mean square value (Root Mean Square, abbreviation: RMS) time delay (Time), that is, TRMS, or reference signal reception quality (Reference Signal Receiving Quality, abbreviation: RSRQ The received signal strength indication (Resived Signal Strength Indication, RSSI), or other parameters that characterize the channel quality, is not limited in this application.

304. In response to the target RAR message, the UE uses the target receive beam to complete a subsequent random access procedure. For example, in a subsequent random access procedure, the UE may use the target downlink RX beam (or on the target downlink RX beam) to receive the MSG4 message in the random access procedure. Optionally, the UE may further determine, according to the target downlink RX beam, a target transmit beam of a subsequent transmit message, that is, a target uplink TX beam. For example, when a beam reciprocity relationship between the RX beam and the TX beam is preset, the UE may An uplink TX beam having a beam reciprocity relationship with the target downlink RX beam is determined as the target uplink TX beam. In the subsequent random access procedure, the UE may also use the target uplink TX beam to send the MSG3 message in the random access procedure. Therefore, the UE can complete the subsequent random access procedure by using the target downlink RX beam and the target uplink TX beam. It should be understood that there are multiple scenarios for random access, such as initiating random access from the RRC IDLE state, initiating random access when the radio link fails, and performing random access when the cell is switched, and initiating when the downlink data arrives when the UE is in the RRC CONNECTED state. Random access, when the UE is in the RRC CONNECTED state, uplink data arrives to initiate random access, and so on. The random access procedure may be initiated by the UE or triggered by the network side, for example, when the downlink data arrives, the base station triggers through physical layer control signaling. The MSG3 message and the MSG4 message may be different in different random access scenarios. For example, the MSG3 message may be an RRC connection request, and the MSG4 message may be an RRC connection setup message or a conflict resolution message; for example, the MSG3 message may be It is a scheduled transmission message, and the MSG4 message may be a Contention Resolution message or the like.

Alternatively, if the target RAR message carries the information of the transmit beam, the UE may use the transmit beam indicated by the information of the transmit beam carried by the target RAR message as the target transmit beam. Thus the UE can transmit the MSG3 message using the transmit beam indicated by the RAR message.

Alternatively, the UE may also send the foregoing MSG3 message by means of beam scanning. For example, when the beam reciprocity relation does not exist, and the target RAR message does not carry the information of the transmitting beam, the UE may pass the beam. The scanning method sequentially transmits the MSG3 message in turn in each uplink TX beam. Optionally, the uplink TX beam for beam scanning may be all uplink TX beams, or may be one or more uplink TXs that are close to the target downlink RX beam (eg, the beam distance is within a preset distance threshold). Beam to reduce terminal overhead.

Alternatively, optionally, if the UE is transmitting the MSG1 message, that is, the preamble, the determined uplink TX beam is used, the uplink TX beam may also be determined as the target uplink TX beam.

Further optionally, the UE may also use the target downlink RX beam for data reception and/or use the target uplink TX beam for data transmission.

For example, the receiving parameter may include a reference signal receiving power such as RSRP; and the UE may determine whether the RSRP of the received RAR message is higher than a preset first threshold, and when the RSRP of the RAR message is higher than the first threshold, The RAR message with the RSRP higher than the first threshold is determined as the target RAR message that meets the preset threshold, and the continuous monitoring of the RAR message may be stopped. The UE may complete the subsequent random access procedure in the target downlink RX beam and/or the target uplink TX beam corresponding to the target RAR message, which reduces the random access delay and improves the random access quality.

For another example, the receiving parameter may include a reference signal receiving power, such as an RSRP, and a bit error rate, such as a BER. The UE may determine whether the RSRP is higher than a preset first threshold, and determine whether the BER is lower than a preset second. Threshold, and when the RSRP of the RAR message is higher than the first threshold and the BER is lower than the second threshold, determining that the RRP message with the RSRP being higher than the first threshold and the BER being lower than the second threshold is determined to meet the preset threshold The target RAR message, and can stop continuing to listen to the RAR message. Therefore, the random access delay can be reduced, and the selected message, that is, the reliability of the determined target RAR message, can be improved, thereby improving the determined target downlink RX beam and/or the target uplink TX beam that complete the subsequent random access procedure. Reliability, which further improves the quality of random access.

As another example, the receive parameters can include reference signal received power such as RSRP and channel quality parameters such as TRMS. The UE may determine whether the RSRP is higher than a preset first threshold, and determine whether the TRMS is lower than a preset third threshold, and if the RSRP of the RAR message is higher than the first threshold and the TRMS is lower than the At the third threshold, the RAR message with the RSRP higher than the first threshold and the TRMS lower than the third threshold is determined as the target RAR message satisfying the preset threshold, and the continual monitoring of the RAR message may be stopped. Thereby, the random access delay can be reduced, and the random access quality is further improved.

As another example, the receive parameters can include reference signal received power such as RSRP, bit error rate such as BER, and channel quality parameters such as TRMS. The UE may determine whether the BER is lower than a preset second threshold by determining whether the RSRP is higher than a preset first threshold, and determine whether the TRMS is lower than a preset third threshold, and in the RAR message. When the RSRP is above the first threshold, its BER is below the second threshold, and its TRMS is below the third threshold, the RSRP is above a first threshold, the BER is below the second threshold, and the TRMS is below a third threshold The RAR message is determined to be a target RAR message that satisfies a preset threshold, and may stop continuing to listen to the RAR message. Therefore, the random access delay can be reduced, and the reliability of the selected message can be further improved, thereby improving the reliability of the target downlink RX beam and/or the target uplink TX beam that are determined to complete the subsequent random access procedure, thereby further Improve the quality of random access.

In the present application, the foregoing first threshold, the second threshold, and the third threshold may be preset, for example, the first threshold, the second threshold, and the third threshold may be obtained through simulation, and the experience can be tested through the network. The value is obtained by the first threshold, the second threshold, and the third threshold; or the first threshold, the second threshold, and the third threshold are notified to the UE by the TRP, and so on.

Further, if the UE does not receive the RAR message that the receiving parameter meets the threshold in the receiving time window, the UE may further receive the parameter random access response message in all the RAR messages received in the receiving time window. As the target RAR message. The subsequent random access process may be performed based on the receive beam and/or the transmit beam corresponding to the RAR message with the best received parameter, and is not described here. The optimal receiving parameter may refer to the highest RSRP, the lowest BER, and/or the lowest TRMS, and the like.

In the embodiment of the present invention, after transmitting the preamble, the UE can listen to at least one RAR message sent by the at least one transmit beam of the TRP on the at least one receive beam, and after receiving the target RAR message that the receive parameter meets the threshold, The RAR message can be stopped, and the subsequent random access process can be completed by using the receive beam and/or the transmit beam corresponding to the target RAR message, which helps reduce the random access delay, thereby improving the random access quality. .

Referring to FIG. 2, FIG. 4 is a schematic diagram of interaction of another message receiving method according to an embodiment of the present invention. Specifically, as shown in FIG. 4, the message receiving method in the embodiment of the present invention may include the following steps:

401. The TRP sends an indication message to the UE. Specifically, the indication message may be used to indicate a target RAR message required by the UE, such as indicating that the UE receives the received RAR message as the target RAR message, or indicating that the receiving of the first RAR message stops receiving, and one of the A RAR message such as the last received RAR message, etc., is not enumerated here.

Optionally, the indication message may be sent to the UE by any TRP in the communication system, or the indication message is sent by the specific TRP in the communication system to the UE, for example, the specific TRP may be the primary cell in the communication system. Corresponding TRP, etc., this application is not limited.

402. The UE sends a preamble to the TRP on at least one transmit beam.

403. The TRP sends a RAR message to the UE on the at least one transmit beam. Specifically, the description of the steps 402-403 can be referred to the related description of the steps 301-302 in the embodiment shown in FIG. 3, and details are not described herein.

404. The UE monitors, on each receive beam of the at least one receive beam, at least one RAR message that is sent by the TRP using the at least one transmit beam, and stops the listening operation after receiving the target RAR message indicated by the indication message on the target receive beam. . Specifically, the UE may determine the required target RAR message according to the indication of the network side. If the RAR message monitored by the UE is not the target RAR message indicated by the indication message, the UE may continue to listen until the target indicated by the indication message is received. RAR message. If the UE receives the target RAR message indicated by the indication message, the UE may stop the listening operation, determine that the RAR message is successfully received, and may continue the subsequent random access procedure.

Optionally, the UE may listen to the at least one RAR message sent by the TRP by using at least one transmit beam on each receive beam of the at least one receive beam within a preset receive time window. Therefore, the UE can perform the listening operation in the receiving time window until the target RAR message indicated by the indication message is received, and then stop the listening operation, that is, stop monitoring and receiving the RAR message in the receiving time window, thereby being fast. Perform a subsequent random access process. This helps to reduce the random access delay.

Optionally, the indication message may be a system message; or the indication message may be an RRC message, for example, a random access procedure initiated when the UE is in an RRC CONNECTED state, and the indication of the target RAR message may be performed by using an RRC message.

Optionally, the execution sequence of the steps 401 and 402 is not limited. For example, the step 402 is performed first. After receiving the preamble, the TRP performs step 401 to indicate the target RAR message to the UE to improve the reliability of the message indication. Further, in order to ensure the validity of the indication message, the step 401 should be performed before the step 403, that is, the TRP first sends an indication message to the UE, and then sends a RAR message to the UE.

For example, the target RAR message indicated by the indication message is the first received random access response message, that is, the reception of the first RAR message sent to the UE is stopped. After the UE listens to and receives the first RAR message sent to the UE, it can determine that the RAR message is successfully received, and can stop listening to other RAR messages, and then use the first RAR message sent to the UE. The corresponding receive beam and/or transmit beam completes the subsequent random access procedure. This reduces the random access delay and reduces the terminal overhead, thereby improving the quality of random access.

405. In response to the target RAR message, the UE uses the target receive beam to complete a subsequent random access procedure. Specifically, the UE may receive the MSG4 message from the TRP by using the target receiving beam. Further, the UE may also send the MSG3 message by using the target transmit beam corresponding to the target receive beam. For a description of the step 405, reference may be made to the related description of the step 304 of the embodiment shown in FIG. 3, and details are not described herein.

In the embodiment of the present invention, the TRP can send the indication message to the UE, so that after transmitting the preamble, the UE can listen to at least one RAR message sent by the at least one transmit beam of the TRP on the at least one receive beam, and receive the After the target RAR message indicated by the indication message, the RAR message can be stopped, and the subsequent random access process can be completed by using the receive beam and/or the transmit beam corresponding to the target RAR message, which helps reduce the random access time. The delay reduces the terminal overhead, thereby improving the quality of random access.

Referring to FIG. 2, FIG. 5 is a schematic diagram of interaction of another message receiving method according to an embodiment of the present invention. Specifically, as shown in FIG. 5, the message receiving method in the embodiment of the present invention may include the following steps:

501. The UE sends a preamble to the TRP on at least one transmit beam.

502. The TRP sends a RAR message to the UE on the at least one transmit beam. For details, refer to the related description of the steps 301-302 in the embodiment shown in FIG. 3, and details are not described herein.

503. The UE receives, on each receive beam of the at least one receive beam, at least one RAR message sent by the TRP by using at least one transmit beam, in a preset receive time window, to obtain multiple RAR messages. The receiving time window may be preset or may be notified to the UE by using a TRP, which is not limited in this application.

504. The UE determines a target RAR message from the multiple RAR messages. Optionally, the target RAR message may be an RAR message that has an optimal receiving parameter among the multiple RAR messages. That is, the UE can continuously listen and receive the RAR message within the preset receiving time window, and after the receiving time window ends, select a RAR message from the receiving time window as the target RAR message, for example, the UE can obtain Receive parameters of each RAR message received, and may select to receive the parameter-optimized RAR message as the target RAR message. Thereby helping to improve the quality of the random access signal.

Optionally, the receiving parameter may include one or more of a reference signal receiving power, a bit error rate, a wireless channel rms value delay, a reference signal receiving quality, and a received signal strength indication, and the foregoing may be specifically referred to. The related description of the embodiments is not described herein.

For example, the receiving parameter may include reference signal received power such as RSRP; then the UE may determine the RAR message with the highest RSRP in the received RAR message as the target RAR message with the best receiving parameter.

As another example, the receiving parameter can include a bit error rate such as BER. Then, the UE may determine the RAR message with the lowest BER in the received RAR message as the target RAR message with the best receiving parameter.

As another example, the receive parameter can include a channel quality parameter such as TRMS. Then, the UE may determine the RAR message with the lowest TRMS in the received RAR message as the target RAR message with the best reception parameter.

For another example, the receiving parameter may include RSRP and TRMS; then the UE may determine that the RAR message in the received RAR message that the RSRP is higher than the TRMS in the RAR message in a threshold is determined as the target RAR message with the best receiving parameter, or will receive The RAR message in which the TRMS is lower than the RSRP in the RAR message in the other RAR message is determined to be the target RAR message with the best reception parameter. It should be understood that the present application may also determine a target RAR message that is optimal for the receiving parameter according to other receiving parameters, such as RSRQ, RSSI, etc., or determine a target RAR message that is optimal for the receiving parameter according to multiple receiving parameters. An enumeration.

505. The UE performs a subsequent random access procedure by using the target receiving beam corresponding to the target RAR message in response to the target RAR message. The target receiving beam is a receiving beam used by the UE to receive the target RAR message. For example, the UE may receive the MSG4 message from the TRP using the target receive beam. Optionally, the UE may also determine a target transmit beam corresponding to the target receive beam, such as determining according to a beam reciprocity relationship or determining according to a transmit beam indication indicated by the target RAR message or by using a beam scan, and then sending the target by using the target. The beam sends an MSG3 message. The UE may also use the target receive beam for subsequent data reception and/or use the target transmit beam for subsequent data transmission. For details, refer to the related description of step 304 of the embodiment shown in FIG. 3, and details are not described herein.

In the embodiment of the present invention, after the UE sends the preamble, the TRP may send at least one RAR message to the UE, so that the UE can receive all the RAR messages corresponding to different beams from the TRP in the preset time window, and from the multiple Determining the target RAR message in the RAR message, for example, determining the RAR message with the best receiving parameter as the target RAR message, and then using the receiving beam and/or the transmitting beam corresponding to the target RAR message to complete the subsequent random access process, which improves the randomness. The quality of the access signal.

In an optional embodiment, the uplink RX beam used by the one or more TRPs to receive the preamble may be the same or different, that is, the one or more TRPs may use one or more different uplink RX beams. Receive the preamble. Further, the TRP may determine the received target preamble, and may perform subsequent information reception by using the target uplink RX beam corresponding to the preamble, for example, receiving the MSG3 message sent by the UE in the subsequent random access procedure. Optionally, the TRP may further determine a target downlink TX beam corresponding to the target uplink RX beam, and the TRP may use the target downlink TX beam to perform subsequent information transmission, for example, sending a MSG4 message to the UE in a subsequent random access procedure. Specifically, the manner in which the TRP determines the target preamble is similar to the manner in which the UE determines the target RAR message, and determines that the target uplink RX beam and the target downlink TX beam are similar to the manner in which the UE determines the target downlink RX beam and the target uplink TX beam. Narration.

The foregoing method embodiments are all examples of the message receiving method of the present application. The descriptions of the various embodiments are different. For details that are not detailed in an embodiment, refer to related descriptions of other embodiments.

FIG. 6 is a schematic diagram showing a possible structure of a terminal involved in the foregoing embodiment. Referring to FIG. 6, the terminal 600 may include: a communication unit 601 and a processing unit 602. Wherein, the units may perform corresponding functions of the terminal, such as the UE, in the foregoing method example, for example, the communication unit 601 is configured to send a random access preamble to the network device on the at least one transmit beam; the communication unit 601 may also be used in at least one Receiving at least one random access response message sent by the network device using the at least one transmit beam on each receive beam of the receive beam until a target random access response message meeting the preset condition is received on the target receive beam; 602. The method is configured to stop the monitoring operation after receiving the target random access response message. The communication unit 601 is further configured to use the target receiving beam to complete subsequent random access in response to the target random access response message. Into the process. and / or,

The communication unit 601 is configured to send a random access preamble to the network device on the at least one transmit beam, and the communication unit 601 is further configured to receive, on each receive beam of the at least one receive beam, the network device to send by using at least one transmit beam. At least one random access response message to obtain a plurality of random access response messages; processing unit 602, configured to determine a target random access response message from the plurality of random access response messages; communication unit 601, further available And responding to the target random access response message, using a target receiving beam corresponding to the target random access response message to complete a subsequent random access procedure.

Optionally, the communication unit 601 is specifically configured to complete the subsequent random access procedure by using the target receiving beam and the target transmit beam corresponding to the target receiving beam.

Optionally, the communication unit 601 is configured to: monitor, in a preset receiving time window, at least one random access response message sent by the network device by using at least one sending beam.

Optionally, the preset condition may include: the receiving parameter of the target random access response message meets a preset threshold.

Optionally, the receiving parameter may include at least one of a reference signal receiving power, a bit error rate, and a channel quality parameter, where the channel quality parameter may include a radio channel rms value delay, a reference signal receiving quality, and a receiving. At least one of the signal strength indications.

Optionally, the communication unit 601 is further configured to receive an indication message sent by the network device, where the target random access response message of the preset condition is indicated by the indication message.

Optionally, the indication message is a system message or an RRC message.

Optionally, the target random access response message indicated by the indication message is a first received random access response message.

Optionally, the target random access response message may be an optimal receiving parameter in the multiple random access response messages.

It should be noted that the division of the unit in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner. Each functional unit in the embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Optionally, the terminal device may implement some or all of the steps performed by the UE in the message receiving method in the foregoing embodiment shown in FIG. 3 to FIG. 5 through the foregoing unit. It should be understood that the embodiments of the present invention are device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present invention.

Referring to FIG. 7, in another embodiment, the terminal 700 can include a processor 701 and a transceiver 702. Optionally, the terminal may further include a memory 703. The processor 701, the transceiver 702, and the memory 703 can be connected to each other. For example, the processor 701, the transceiver 702, and the memory 703 may be connected to each other through a bus 704; the bus 704 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (extended industry standard architecture). Abbreviations: EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

The processor 701 may be a processor or a controller, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit. (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor can also be a combination of computing functions, including, for example, one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like. The transceiver 702 can include a separate receiver and transmitter, or can be integrated with the receiver and transmitter.

The processor 701 is configured to perform control management on the actions of the terminal. For example, the processor 701 is configured to support the terminal to perform the process 303 in FIG. 3, the process 404 in FIG. 4, the process 504 in FIG. 5, and/or Other processes of the techniques described herein. The transceiver 702 can perform communication functions for supporting communication of the terminal with other network entities, such as with the functional units or network entities such as the TRPs illustrated in Figures 3-6. Specifically, the processor 701 is configured to determine whether to transmit and receive signals, and is a controller of the communication function, that is, the processor 701 performs related transmission and reception by controlling or driving the transceiver 702 when performing signal transmission and reception. The transceiver 702 can implement a specific communication operation under the control of the processor 701 and is an executor of the communication function.

Further, the memory 703 can be used to store at least one of program code and data of the terminal. When the processor 701 is operating under software, such as including a CPU, DSP or microcontroller, it can read and operate the program code stored in the memory 703.

The present application also provides a communication system including the above-described terminals such as UEs and/or network devices such as TRPs. Optionally, the system may further include other devices in the solution provided by the embodiment of the present invention, such as devices in the core network.

The present application also provides a chip system, which may include a processor for supporting a terminal to implement functions of the above-mentioned terminal, such as a UE, for example, for example, processing data and/or messages involved in the above message receiving method. Optionally, the chip system may further include a memory, where the memory may be used to save necessary program instructions and data of the terminal. Further optionally, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions. The software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable Programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal. Of course, the processor and the storage medium can also exist as discrete components in the terminal.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

It is also to be understood that the first, second, third, and various reference numerals are in the

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Claims (28)

A message receiving method, comprising: Transmitting a random access preamble to the network device on the at least one transmit beam; Monitoring, by each of the at least one receive beam, at least one random access response message sent by the network device using the at least one transmit beam, until a target random access response message that meets a preset condition is received on the target receive beam The listening operation is stopped after receiving the target random access response message; The subsequent random access procedure is completed using the target receive beam in response to the target random access response message. The method according to claim 1, wherein the performing the subsequent random access process by using the target receiving beam comprises: The subsequent random access procedure is completed using the target receive beam and a target transmit beam corresponding to the target receive beam. The method according to claim 1 or 2, wherein the listening to the at least one random access response message sent by the network device using the at least one transmit beam comprises: At least one random access response message sent by the network device using at least one transmit beam is monitored within a preset receive time window. The method according to any one of claims 1-3, wherein the preset condition comprises: a receiving parameter of the target random access response message satisfies a preset threshold. The method according to claim 4, wherein the receiving parameter comprises at least one of a reference signal received power, a bit error rate, and a channel quality parameter, wherein the channel quality parameter comprises a radio channel rms value delay And at least one of a reference signal reception quality and a received signal strength indication. The method according to any one of claims 1 to 3, wherein the method further comprises: And receiving an indication message sent by the network device, where the target random access response message of the preset condition is indicated by the indication message. The method according to claim 6, wherein the indication message is a system message or a radio resource control RRC message. The method according to claim 6 or 7, wherein the target random access response message indicated by the indication message is a first received random access response message. A message receiving method, comprising: Transmitting a random access preamble to the network device on the at least one transmit beam; Receiving, by each of the at least one receive beam, at least one random access response message sent by the network device using the at least one transmit beam to obtain a plurality of random access response messages; Determining a target random access response message from the plurality of random access response messages; And responding to the target random access response message, using a target receiving beam corresponding to the target random access response message to complete a subsequent random access procedure. The method according to claim 9, wherein the performing the subsequent random access procedure by using the target receiving beam corresponding to the target random access response message comprises: And performing the subsequent random access procedure by using the target receiving beam corresponding to the target random access response message and the target transmitting beam corresponding to the target receiving beam. The method according to claim 9 or 10, wherein the receiving, by the network device, the at least one random access response message sent by using at least one transmit beam comprises: Receiving at least one random access response message sent by the network device using at least one transmit beam within a preset receive time window. The method according to any one of claims 9-11, wherein the target random access response message has an optimal receiving parameter in the plurality of random access response messages. The method according to claim 12, wherein the receiving parameter comprises at least one of a reference signal received power, a bit error rate, and a channel quality parameter, wherein the channel quality parameter comprises a wireless channel rms value delay And at least one of a reference signal reception quality and a received signal strength indication. A terminal, comprising: a communication unit and a processing unit; The communication unit is configured to send a random access preamble to the network device on the at least one transmit beam; The communication unit is further configured to: monitor, on each receive beam of the at least one receive beam, at least one random access response message sent by the network device by using at least one transmit beam, until a preset is received on the target receive beam. Conditional target random access response message; The processing unit is configured to stop the listening operation after receiving the target random access response message; The communication unit is further configured to complete the subsequent random access procedure by using the target receiving beam in response to the target random access response message. The terminal according to claim 14, wherein The communication unit is specifically configured to complete a subsequent random access procedure by using the target receive beam and a target transmit beam corresponding to the target receive beam. A terminal according to claim 14 or 15, wherein The communication unit is configured to listen to at least one random access response message sent by the network device by using at least one transmit beam in a preset receiving time window. The terminal according to any one of claims 14-16, wherein the preset condition comprises: a receiving parameter of the target random access response message satisfies a preset threshold. The terminal according to claim 17, wherein the receiving parameter comprises at least one of a reference signal received power, a bit error rate and a channel quality parameter, wherein the channel quality parameter comprises a radio channel rms value delay And at least one of a reference signal reception quality and a received signal strength indication. A terminal according to any one of claims 14-16, characterized in that The communication unit is further configured to receive an indication message sent by the network device, where the target random access response message of the preset condition is indicated by the indication message. The terminal according to claim 19, wherein the indication message is a system message or a radio resource control RRC message. The terminal according to claim 19 or 20, wherein the target random access response message indicated by the indication message is a first received random access response message. A terminal, comprising: a communication unit and a processing unit; The communication unit is configured to send a random access preamble to the network device on the at least one transmit beam; The communication unit is further configured to: receive, on each receive beam of the at least one receive beam, at least one random access response message sent by the network device by using at least one transmit beam, to obtain multiple random access response messages; The processing unit is configured to determine a target random access response message from the multiple random access response messages; The communication unit is further configured to complete a subsequent random access procedure by using a target receiving beam corresponding to the target random access response message in response to the target random access response message. The terminal according to claim 22, characterized in that The communication unit is configured to complete the subsequent random access process by using the target receiving beam corresponding to the target random access response message and the target transmitting beam corresponding to the target receiving beam. A terminal according to claim 22 or 23, characterized in that The communication unit is configured to receive, by using a preset receive time window, at least one random access response message sent by the network device by using at least one transmit beam. The terminal according to any one of claims 22 to 24, wherein the target random access response message has an optimal receiving parameter in the plurality of random access response messages. The terminal according to claim 25, wherein the receiving parameter comprises at least one of a reference signal received power, a bit error rate, and a channel quality parameter, wherein the channel quality parameter comprises a radio channel rms value delay And at least one of a reference signal reception quality and a received signal strength indication. A computer storage medium for storing computer software instructions for use in a terminal, comprising: a program for performing the design of any of claims 1-8; and/or comprising Requires the procedure designed in any of 9-13. A computer program product comprising instructions, wherein when said instructions are run on a computer, causing a computer to perform the method of any of claims 1-8, and/or performing as claimed in claim 9 - The method of any of the preceding claims.

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