WO2023051442A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2023051442A1
WO2023051442A1 PCT/CN2022/121259 CN2022121259W WO2023051442A1 WO 2023051442 A1 WO2023051442 A1 WO 2023051442A1 CN 2022121259 W CN2022121259 W CN 2022121259W WO 2023051442 A1 WO2023051442 A1 WO 2023051442A1
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WIPO (PCT)
Prior art keywords
bwp
paging
bit
terminal
pdcch
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PCT/CN2022/121259
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English (en)
Chinese (zh)
Inventor
张战战
铁晓磊
周涵
黄雯雯
花梦
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华为技术有限公司
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Publication of WO2023051442A1 publication Critical patent/WO2023051442A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the technical field of communication, and more specifically, to a communication method and device.
  • the random access search space set can be configured for the redcap terminal in the downlink BWP dedicated to the redcap.
  • the redcap terminal performs random access, in order to obtain short message information such as system message changes, it needs to perform radio frequency switching, resulting in increased power consumption of the redcap terminal. If the redcap terminal does not perform radio frequency switching, the redcap terminal does not obtain short message information in time, and may initiate random access multiple times and fail many times, resulting in increased power consumption and access delay of the redcap terminal. Therefore, how to reduce the power consumption and access delay of the redcap terminal is an urgent problem to be solved.
  • Embodiments of the present application provide a communication method and device.
  • a communication method including:
  • the first terminal receives first configuration information from the network device.
  • the first configuration information is used to configure the paging search space set in the first bandwidth part BWP and the second BWP.
  • the first BWP is the active BWP
  • the first terminal receives the first downlink control information DCI in the paging search space set configured in the first BWP, the first DCI includes short message information, and the first DCI is not used for scheduling paging Physical downlink shared channel PDSCH.
  • the second BWP is the active BWP
  • the first terminal receives the second DCI in the paging search space set configured in the second BWP, the second DCI includes short message information, and the second DCI can schedule the paging PDSCH.
  • the first terminal when the first terminal performs RA in the first BWP, in order to obtain short message information, the first terminal may monitor the paging PDCCH in the paging search space set configured in the first BWP.
  • the first terminal does not need to perform RF handover, that is, the first terminal does not need to switch to the second BWP, and the paging search space set configured in the second BWP monitors the paging PDCCH to obtain short message information. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, and the access delay of the first terminal can be reduced.
  • the first DCI is not used for scheduling the paging PDSCH, including:
  • the first DCI includes a short message indication field, and the short message indication field indicates that the first DCI does not include PDSCH scheduling information.
  • the first DCI includes a first bit field, where the first bit field is a bit field other than the short message indication field and the short message field, and the first bit field is set to a first preset value or reserved.
  • the configuration of the paging search space set in the first BWP is the same as the configuration of the paging search space set in the second BWP.
  • the configuration of the paging search space set includes at least one of the following:
  • Listening cycle cycle offset, number of consecutive time slots for each listening opportunity, listening symbols in the listening opportunity, candidate physical downlink control channel PDCCH aggregation level, number of PDCCH candidates corresponding to the candidate PDCCH aggregation level, search space set type, DCI format for searching space associations.
  • the first configuration information is also used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the first BWP Execute RA within.
  • the first DCI is received by the first terminal during the process of executing RA in the first BWP.
  • the first configuration information is also used to configure the paging occasion PO in the first BWP and the second BWP, and the configuration of the PO in the first BWP and the PO configuration in the second BWP
  • the configuration of the PO is the same.
  • the PO configuration includes at least one of the following:
  • Default paging cycle ratio of paging frame in radio frame, paging frame offset, number of paging opportunities included in each paging frame, first PDCCH monitoring opportunity of each PO included in paging frame The time domain position in the paging frame.
  • the first configuration information is also used to configure the paging occasion PO in the first BWP and the second BWP, and the partial configuration of the PO in the first BWP and the second BWP.
  • Some configurations of the inner POs are the same, and some configurations include the ratio of the paging frame in the radio frame and the offset of the paging frame. The number of paging occasions in the paging frame in the first BWP is smaller than the number of paging occasions in the paging frame in the second BWP.
  • a communication method including:
  • the network device sends the first configuration information to the first terminal.
  • the first configuration information is used to configure the paging search space set in the first bandwidth part BWP and the second BWP.
  • the paging search space set configured by the network device in the first BWP sends first downlink control information DCI to the first terminal, the first DCI includes short message information, and the first DCI is not used for scheduling the paging physical downlink shared channel PDSCH.
  • the paging search space set configured by the network device in the second BWP sends the second DCI, the second DCI includes short message information, and the second DCI can schedule the paging PDSCH.
  • the network device configures a paging search space set for the first terminal in both the first BWP and the second BWP.
  • the first terminal may monitor the paging PDCCH in the paging search space set configured in the first BWP.
  • the first terminal does not need to perform RF handover, that is, the first terminal does not need to switch to the second BWP, and the paging search space set configured in the second BWP monitors the paging PDCCH to obtain short message information. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, and the access delay of the first terminal can be reduced.
  • the first DCI is not used for scheduling the paging PDSCH, including:
  • the first DCI includes a short message indication field, and the short message indication field indicates that the first DCI does not include PDSCH scheduling information.
  • the first DCI includes a first bit field, where the first bit field is a bit field other than the short message indication field and the short message field, and the first bit field is set to a first preset value or reserved.
  • the configuration of the paging search space set in the first BWP is the same as the configuration of the paging search space set in the second BWP.
  • the configuration of the paging search space set includes at least one of the following:
  • Listening cycle cycle offset, number of consecutive time slots for each listening opportunity, listening symbols in the listening opportunity, candidate physical downlink control channel PDCCH aggregation level, number of PDCCH candidates corresponding to the candidate PDCCH aggregation level, search space set type, DCI format for searching space associations.
  • the first configuration information is further used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the first BWP Perform random access.
  • the first configuration information is also used to configure the paging occasion PO in the first BWP and the second BWP, and the configuration of the PO in the first BWP and the PO configuration in the second BWP
  • the configuration of the PO is the same.
  • the PO configuration includes at least one of the following:
  • Default paging cycle ratio of paging frame in radio frame, paging frame offset, number of paging opportunities included in each paging frame, first PDCCH monitoring opportunity of each PO included in paging frame The time domain position in the paging frame.
  • the first configuration information is also used to configure the paging occasion PO in the first BWP and the second BWP, and the partial configuration of the PO in the first BWP and the second BWP
  • Some configurations of the inner POs are the same, and some configurations include the ratio of the paging frame in the radio frame and the offset of the paging frame.
  • the number of paging occasions in the paging frame in the first BWP is smaller than the number of paging occasions in the paging frame in the second BWP.
  • a communication method including:
  • the first terminal receives first configuration information from the network device.
  • the first configuration information is used to configure the random access RA search space set in the first BWP, and the paging search space set is not included in the first BWP.
  • the first terminal receives short message information from the network device at the first BWP.
  • the first terminal can receive short message information in the first BWP. Therefore, the first terminal can obtain short message information without performing RF handover. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, and the access delay of the first terminal can be reduced.
  • the first terminal receives short message information from the network device at the first BWP, including:
  • the first terminal receives the short message information from the network device at the first BWP, and the short message information is carried on the first PDSCH, and the first PDSCH is scheduled by the PDCCH scrambled by the random access radio network temporary identifier RA-RNTI.
  • the first terminal receives short message information from the network device at the first BWP, the short message information is carried on the second PDCCH, the second PDCCH is scrambled by RA-RNTI, and the short message information includes public early warning system PWS notification information.
  • the first terminal receives the short message information from the network device at the first BWP, the short message information is carried on the third PDCCH, and the third PDCCH is scrambled by the temporary cell radio network temporary identifier TC-RNTI.
  • a communication method including:
  • the network device sends the first configuration information to the first terminal.
  • the first configuration information is used to configure the random access RA search space set in the first bandwidth part BWP, and the network device does not configure the paging search space set in the first BWP.
  • the network device sends short message information to the first terminal at the first BWP.
  • the network device may send short message information to the first terminal in the first BWP. Therefore, when the first terminal executes RA in the first BWP, it does not need to execute RF handover in order to acquire short message information. That is, the first terminal does not need to switch to the second BWP, and monitors the paging PDCCH in the paging search space set in the second BWP to obtain short message information. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, and the access delay of the first terminal can be reduced.
  • the network device sends short message information to the first terminal at the first BWP, including:
  • the network device sends short message information to the first terminal at the first BWP, and the short message information is carried on the first PDSCH, and the first PDSCH is scheduled by the PDCCH scrambled by the random access radio network temporary identifier RA-RNTI.
  • the network device sends short message information to the first terminal on the first BWP, the short message information is carried on the second PDCCH, the second PDCCH is scrambled by RA-RNTI, and the short message information includes public early warning system PWS notification information.
  • the network device sends short message information to the first terminal at the first BWP, the short message information is carried on the third PDCCH, and the third PDCCH is scrambled by the temporary cell radio network temporary identifier TC-RNTI.
  • a communication method including:
  • the first terminal receives first configuration information from the network device.
  • the first configuration information is used to configure a paging search space set in the first bandwidth part BWP and in the second BWP, and the paging search space set is used for the first terminal to monitor the paging PDCCH.
  • the first terminal receives first indication information, where the first indication information is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the first terminal monitors the paging PDCCH on a BWP.
  • the network device can configure a paging search space set for the first terminal in the first BWP and the second BWP, and instruct the first terminal to monitor paging in the first BWP or the second BWP through the first indication information PDCCH, so as to realize dynamic paging load balancing.
  • the first configuration information is further used to configure the paging occasion PO in the first BWP and in the second BWP.
  • the method also includes:
  • the first terminal receives second indication information, where the second indication information instructs the first terminal to monitor the first indication information at the second BWP.
  • the first indication information is further used to indicate whether the first terminal monitors the paging PDCCH.
  • the second indication information is further used to instruct the second terminal to monitor the first indication information at the second BWP, and the first indication information is also used to indicate whether the second terminal monitors Paging PDCCH.
  • both the first indication information and the second indication information may be sent to the first type of terminal and the second type of terminal.
  • the first indication information includes a first bit field and a second bit field
  • the first bit field is used to indicate whether the first terminal and the second terminal monitor the paging PDCCH
  • the second bit field is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the PO configuration in the first BWP is the same as the PO configuration in the second BWP, and the PO configuration includes: the proportion of paging frames in radio frames, paging The frame offset and the number of paging occasions included in each paging frame, the first indication information is associated with N POs in the second BWP, and N is a positive integer.
  • the first bit field includes bit i, and the bit i is used to indicate whether all terminals on the i-th PO monitor the paging PDCCH. or,
  • the first bit field includes bit i1 and bit i2.
  • Bit i1 is used to indicate whether all the first-type terminals on the i-th PO monitor whether to monitor the paging PDCCH
  • bit i2 is used to indicate the Whether all the second-type terminals monitor the paging PDCCH, the first terminal belongs to the first-type terminal, and the second terminal belongs to the second-type terminal. or,
  • bit i1 to bit ix bits i1 to bit ix have one-to-one correspondence with x group terminals
  • bit i(x+1) to bit i(x+y) and y group terminal bit i(x+1) to bit i(x+y)
  • y group terminal bit i(x+1) to bit i(x+y)
  • each bit in bit i1 to bit ix and bit i(x+1) to bit i(x+y) is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and x and y are positive integers . or,
  • all terminals on the i-th PO are divided into j groups, at least one group of terminals in the j group of terminals includes at least one first-type terminal and at least one second-type terminal, and the first bit field includes bits i1 to bit ij, bit i1 to bit ij correspond to j groups of terminals one by one, each bit in bit i1 to bit ij is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and j is a positive integer.
  • i is a positive integer less than or equal to N.
  • the PO configuration in the first BWP is the same as the PO configuration in the second BWP, and the PO configuration includes: the proportion of paging frames in radio frames, paging The frame offset and the number of paging occasions included in each paging frame, the first indication information is associated with N POs in the second BWP, and N is a positive integer.
  • the second bit field includes bit k, and the bit k is used to indicate that all the first-type terminals on the k-th PO monitor a BWP of the paging PDCCH, and k is less than or equal to N Positive integer, the first terminal belongs to the first type of terminal. or,
  • the first indication information is associated with M paging frame PFs in the second BWP.
  • the second bit field includes bit m, and the bit m is used to indicate all POs included in the mth PF.
  • All the terminals of the first type monitor a BWP of the paging PDCCH, M is a positive integer, and m is a positive integer less than or equal to M. or,
  • the second bit field includes 1 bit, and 1 bit is used to indicate that all first-type terminals on all POs associated with the first indication information monitor one BWP of the paging PDCCH.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP, and the partial configuration includes the proportion of the paging frame in the radio frame, the paging Frame offset, the number of paging occasions included in each paging frame in the first BWP is different from the number of paging occasions included in each paging frame in the second BWP.
  • the number of POs associated with the first indication information in the first BWP is a first value
  • the number of POs associated with the first indication information in the second BWP is a second value
  • the first bit field includes a number of bits associated with the second value.
  • the first bit field includes a number of bits associated with the first value and the second value.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP, and the partial configuration includes the proportion of the paging frame in the radio frame, the paging Frame offset, the number of paging occasions included in each paging frame in the first BWP is different from the number of paging occasions included in each paging frame in the second BWP.
  • the number of POs associated with the first indication information in the first BWP is a first value
  • the number of POs associated with the first indication information in the second BWP is a second value
  • the number of bits included in the second bit field is equal to the first value. or,
  • the number of bits included in the second bit field is equal to the second value. or,
  • the number of bits included in the second bit field is equal to the smaller value between the first value and the second value. or,
  • the number of bits included in the second bit field is equal to the larger value between the first value and the second value. or,
  • the number of bits included in the second bit field is equal to the third value, and the third value is the number of PFs associated with the first indication information in the second BWP. or,
  • the second bit field includes 1 bit, and 1 bit is used to indicate that all first-type terminals on all POs associated with the first indication information monitor a BWP of the paging PDCCH, and the first terminal belongs to the first-type terminal.
  • the first configuration information is also used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the first BWP Perform random access.
  • the method further includes: when the first terminal performs random access in the first BWP, the paging search space set configured by the first terminal in the first BWP receives a fourth DCI from the network device, the fourth DCI includes short message type information.
  • the first terminal when the first terminal performs RA in the first BWP, the first terminal can monitor the paging PDCCH in the paging search space set in the first BWP, so as to obtain short message information. Therefore, when the first terminal executes RA in the first BWP, the first terminal can acquire short message information without performing RF handover, which reduces power consumption and access delay of the first terminal.
  • a communication method including:
  • the network device sends the first configuration information to the first terminal.
  • the first configuration information is used to configure a paging search space set in the first bandwidth part BWP and in the second BWP, and the paging search space set is used for the first terminal to monitor the paging PDCCH.
  • the network device sends first indication information, where the first indication information is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the network device can configure a paging search space set for the first terminal in the first BWP and the second BWP, and instruct the first terminal to monitor paging in the first BWP or the second BWP through the first indication information PDCCH, so as to realize dynamic paging load balancing.
  • the first configuration information is further used to configure the paging occasion PO in the first BWP and in the second BWP.
  • the method also includes:
  • the network device sends second indication information, where the second indication information instructs the first terminal to monitor the first indication information at the second BWP.
  • the first indication information is further used to indicate whether the first terminal monitors the paging PDCCH.
  • the method further includes:
  • the network device sends the second configuration information to the second terminal.
  • the second configuration information is used to configure the paging search space set in the second BWP, and is used to configure the PO in the second BWP.
  • the second indication information is further used to instruct the second terminal to monitor the first indication information at the second BWP, and the first indication information is also used to indicate whether the second terminal monitors Paging PDCCH.
  • the first indication information includes a first bit field and a second bit field
  • the first bit field is used to indicate whether the first terminal and the second terminal monitor the paging PDCCH
  • the second bit field is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the PO configuration in the first BWP is the same as the PO configuration in the second BWP, and the PO configuration includes: the proportion of paging frames in radio frames, paging The frame offset and the number of paging occasions included in each paging frame, the first indication information is associated with N POs in the second BWP, and N is a positive integer.
  • the first bit field includes bit i, and the bit i is used to indicate whether all terminals on the i-th PO monitor the paging PDCCH. or,
  • the first bit field includes bit i1 and bit i2.
  • Bit i1 is used to indicate whether all the first-type terminals on the i-th PO monitor whether to monitor the paging PDCCH
  • bit i2 is used to indicate the Whether all the second-type terminals monitor the paging PDCCH, the first terminal belongs to the first-type terminal, and the second terminal belongs to the second-type terminal. or,
  • bit i1 to bit ix bits i1 to bit ix have one-to-one correspondence with x group terminals
  • bit i(x+1) to bit i(x+y) and y group terminal bit i(x+1) to bit i(x+y)
  • y group terminal bit i(x+1) to bit i(x+y)
  • each bit in bit i1 to bit ix and bit i(x+1) to bit i(x+y) is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and x and y are positive integers . or,
  • all terminals on the i-th PO are divided into j groups, at least one group of terminals in the j group of terminals includes at least one first-type terminal and at least one second-type terminal, and the first bit field includes bits i1 to bit ij, bit i1 to bit ij correspond to j groups of terminals one by one, each bit in bit i1 to bit ij is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and j is a positive integer.
  • i is a positive integer less than or equal to N.
  • the PO configuration in the first BWP is the same as the PO configuration in the second BWP, and the PO configuration includes: the proportion of paging frames in radio frames, paging The frame offset and the number of paging occasions included in each paging frame, the first indication information is associated with N POs in the second BWP, and N is a positive integer.
  • the second bit field includes bit k, and the bit k is used to indicate that all the first-type terminals on the k-th PO monitor a BWP of the paging PDCCH, and k is less than or equal to N Positive integer, the first terminal belongs to the first type of terminal. or,
  • the first indication information is associated with M paging frame PFs in the second BWP.
  • the second bit field includes bit m, and the bit m is used to indicate all POs included in the mth PF.
  • All first-type terminals monitor one BWP of the paging PDCCH, M is a positive integer, and m is a positive integer less than or equal to M. or,
  • the second bit field includes 1 bit, and 1 bit is used to indicate that all first-type terminals on all POs associated with the first indication information monitor one BWP of the paging PDCCH.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP, and the partial configuration includes the proportion of the paging frame in the radio frame, the paging Frame offset, the number of paging occasions included in each paging frame in the first BWP is different from the number of paging occasions included in each paging frame in the second BWP.
  • the number of POs associated with the first indication information in the first BWP is a first value
  • the number of POs associated with the first indication information in the second BWP is a second value
  • the first bit field includes a number of bits associated with the second value.
  • the first bit field includes a number of bits associated with the first value and the second value.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP, and the partial configuration includes the proportion of the paging frame in the radio frame, the paging Frame offset, the number of paging occasions included in each paging frame in the first BWP is different from the number of paging occasions included in each paging frame in the second BWP.
  • the number of POs associated with the first indication information in the first BWP is a first value
  • the number of POs associated with the first indication information in the second BWP is a second value
  • the number of bits included in the second bit field is equal to the first value. or,
  • the number of bits included in the second bit field is equal to the second value. or,
  • the number of bits included in the second bit field is equal to the smaller value between the first value and the second value. or,
  • the number of bits included in the second bit field is equal to the larger value between the first value and the second value. or,
  • the number of bits included in the second bit field is equal to the third value, and the third value is the number of PFs associated with the first indication information in the second BWP. or,
  • the second bit field includes 1 bit, and 1 bit is used to indicate that all first-type terminals on all POs associated with the first indication information monitor a BWP of the paging PDCCH, and the first terminal belongs to the first-type terminal.
  • the first configuration information is also used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the first BWP Perform random access.
  • the method also includes:
  • the paging search space set configured by the network device in the first BWP sends the fourth DCI, where the fourth DCI includes short message information.
  • the network device when the first terminal performs RA in the first BWP, the network device can send the fourth DCI to the first terminal in the paging search space set in the first BWP, so that the first terminal starts from the first BWP. Obtain short message information from DCI. Therefore, when the first terminal executes RA in the first BWP, the first terminal can acquire short message information without performing RF handover, which reduces power consumption and access delay of the first terminal.
  • a communication method including:
  • the first terminal receives a first synchronization signal block SSB from the network device, the first SSB includes a physical broadcast channel PBCH, the PBCH is used to carry MIB information, and the first SSB is used to determine a first cell connected to the first terminal.
  • the first terminal determines to connect to the first cell according to the first SSB.
  • the first terminal receives configuration information of the second SSB from the network device in the first cell.
  • the first terminal receives the second SSB from the network device, the second SSB does not include the PBCH, and the second SSB includes at least one secondary synchronization signal SSS.
  • the first terminal performs measurement according to the second SSB.
  • the second SSB can be configured for the first terminal in the first BWP, so that The first terminal can perform measurements.
  • the PBCH may not be included in the second SSB, thereby reducing power consumption of network equipment and saving resource overhead.
  • the second SSB includes one SSS, and one SSS occupies the third OFDM symbol.
  • the second SSB further includes 1 PSS, and 1 PSS occupies the first OFDM symbol, and the first OFDM symbol is located before the third OFDM symbol, and the first OFDM symbol and Only the second OFDM symbols are spaced between the third OFDM symbols. or,
  • the second SSB further includes 1 SSS, and the further included 1 SSS occupies the first OFDM symbol. or,
  • the second SSB also includes 1 PSS and 2 SSSs.
  • 1 PSS occupies the first OFDM symbol
  • 2 SSSs occupy the second OFDM symbol and the fourth OFDM symbol respectively.
  • the fourth OFDM symbol is the first OFDM symbol after the third OFDM symbol. OFDM symbols. or,
  • the second SSB further includes 3 SSSs, and the 3 SSSs occupy the first OFDM symbol, the second OFDM symbol, and the fourth OFDM symbol respectively. or,
  • the second SSB further includes 1 PSS and 1 SSS, 1 PSS occupies the first OFDM symbol, and the further included 1 SSS occupies the fourth OFDM symbol or the second OFDM symbol. or,
  • the second SSB also includes 2 SSSs, and the 2 SSSs respectively occupy the second OFDM symbol and the fourth OFDM symbol, or, the 2 SSSs respectively occupy the first OFDM symbol and the fourth OFDM symbol, or, the 2 SSSs respectively occupy the first OFDM symbol OFDM symbol and a second OFDM symbol.
  • the PSS or SSS on any OFDM symbol of the second SSB occupies the same frequency domain range.
  • the second SSB further includes 1 PSS and a demodulation reference signal DMRS
  • 1 PSS occupies the first OFDM symbol
  • the first OFDM symbol is located before the third OFDM symbol
  • the first OFDM symbol and the third OFDM symbol are only separated by the second OFDM symbol
  • the DMRS is allowed to occupy the second OFDM symbol
  • the third OFDM symbol, and the fourth OFDM symbol and the fourth OFDM symbol is the first OFDM symbol after the third OFDM symbol. OFDM symbols.
  • One PSS and one SSS occupy 127 resource units RE respectively, and the frequency domain range occupied by one PSS and one SSS is the same.
  • the DMRS allows to occupy 60 REs on the second OFDM symbol, allows to occupy 24 REs on the third OFDM symbol, and allows to occupy 60 REs on the fourth OFDM symbol.
  • the i-th RE among the 60 REs on the second OFDM symbol has the same frequency as the i-th RE among the 60 REs on the fourth OFDM symbol, and the 60 REs on the second OFDM symbol or the fourth OFDM symbol
  • the j+1th RE in is offset by 4 REs relative to the jth RE, i is a positive integer less than or equal to 60, and j is a positive integer less than or equal to 59.
  • the frequency of the k-th RE among the 24 REs on the third OFDM symbol is the same as the frequency of the k-th RE among the 60 REs on the second OFDM symbol, and k is a positive integer less than or equal to 12.
  • the frequency of the mth RE among the 24 REs on the third OFDM symbol is the same as the frequency of the m+36th RE among the 60 REs on the second OFDM symbol, and m is a positive number greater than or equal to 13 and less than or equal to 24 integer.
  • the method further includes:
  • the first terminal receives downlink data in a PRB that does not transmit the second SSB. or,
  • the first terminal receives downlink data on the RE that does not transmit the second SSB.
  • the downlink data includes at least one of the following: physical downlink shared channel PDSCH, physical downlink control channel PDCCH, downlink reference signal, and the downlink reference signal includes at least one of the following: channel state information reference signal CSI-RS, tracking reference signal TRS, positioning reference signal PRS etc.
  • the network device can send downlink data in the saved time-frequency resource, thereby improving the utilization rate of the time-frequency resource.
  • the frequency of the first SSB is different from the frequency of the second SSB.
  • the second SSB has a second period
  • the first SSB has a first period
  • the second period is less than or equal to the first period.
  • the second SSB is located in the second field, and the first SSB is located in the first field.
  • the number of first SSBs included in the first field and the number of second SSBs included in the second field are both Q, where Q is a positive integer.
  • the qth first SSB included in the first half-frame and the qth second SSB included in the second half-frame have a quasi-co-located QCL relationship, and the QCL relationship includes at least one of the following: quasi-co-located type A QCL-TypeA, quasi-co-located Co-location type D QCL-TypeD, q is a positive integer less than or equal to Q.
  • a communication method including:
  • the network device sends a first synchronization signal block SSB to the first terminal, the first SSB includes a physical broadcast channel PBCH, and the PBCH is used to carry MIB information, and the first SSB is used to determine the first cell connected to the first terminal.
  • the network device sends configuration information of the second SSB to the first terminal in the first cell.
  • the network device sends the second SSB to the first terminal according to the configuration information of the second SSB, the second SSB does not include the PBCH, and the second SSB includes at least one secondary synchronization signal SSS.
  • the second SSB can be configured for the first terminal in the first BWP.
  • SSB enabling the first terminal to perform measurements.
  • the PBCH may not be included in the second SSB, thereby reducing power consumption of network equipment and saving resource overhead.
  • the second SSB includes one SSS, and one SSS occupies the third OFDM symbol.
  • the second SSB further includes 1 PSS, and 1 PSS occupies the first OFDM symbol, and the first OFDM symbol is located before the third OFDM symbol, and the first OFDM symbol and Only the second OFDM symbols are spaced between the third OFDM symbols. or,
  • the second SSB further includes 1 SSS, and the further included 1 SSS occupies the first OFDM symbol. or,
  • the second SSB also includes 1 PSS and 2 SSSs.
  • 1 PSS occupies the first OFDM symbol
  • 2 SSSs occupy the second OFDM symbol and the fourth OFDM symbol respectively.
  • the fourth OFDM symbol is the first OFDM symbol after the third OFDM symbol. OFDM symbols. or,
  • the second SSB further includes 3 SSSs, and the 3 SSSs occupy the first OFDM symbol, the second OFDM symbol, and the fourth OFDM symbol respectively. or,
  • the second SSB further includes 1 PSS and 1 SSS, 1 PSS occupies the first OFDM symbol, and the 1 SSS further includes occupies the fourth OFDM symbol or the second OFDM symbol. or,
  • the second SSB also includes 2 SSSs, and the 2 SSSs respectively occupy the second OFDM symbol and the fourth OFDM symbol, or, the 2 SSSs respectively occupy the first OFDM symbol and the fourth OFDM symbol, or, the 2 SSSs respectively occupy the first OFDM symbol OFDM symbol and a second OFDM symbol.
  • the frequency domain range occupied by the PSS or the SSS on any OFDM symbol of the second SSB is the same.
  • the second SSB further includes 1 PSS and a demodulation reference signal DMRS
  • 1 PSS occupies the first OFDM symbol
  • the first OFDM symbol is located before the third OFDM symbol
  • the first OFDM symbol and the third OFDM symbol are only separated by the second OFDM symbol
  • the DMRS is allowed to occupy the second OFDM symbol
  • the third OFDM symbol, and the fourth OFDM symbol and the fourth OFDM symbol is the first OFDM symbol after the third OFDM symbol. OFDM symbols.
  • One PSS and one SSS occupy 127 resource units RE respectively, and the frequency domain range occupied by one PSS and one SSS is the same.
  • the DMRS allows to occupy 60 REs on the second OFDM symbol, allows to occupy 24 REs on the third OFDM symbol, and allows to occupy 60 REs on the fourth OFDM symbol.
  • the i-th RE among the 60 REs on the second OFDM symbol has the same frequency as the i-th RE among the 60 REs on the fourth OFDM symbol, and the 60 REs on the second OFDM symbol or the fourth OFDM symbol
  • the j+1th RE in is offset by 4 REs relative to the jth RE, i is a positive integer less than or equal to 60, and j is a positive integer less than or equal to 59.
  • the frequency of the k-th RE among the 24 REs on the third OFDM symbol is the same as the frequency of the k-th RE among the 60 REs on the second OFDM symbol, and k is a positive integer less than or equal to 12.
  • the frequency of the mth RE among the 24 REs on the third OFDM symbol is the same as the frequency of the m+36th RE among the 60 REs on the second OFDM symbol, and m is a positive number greater than or equal to 13 and less than or equal to 24 integer.
  • the method further includes:
  • the network device sends downlink data in the PRB that does not transmit the second SSB. or,
  • the network device sends downlink data on REs that do not transmit the second SSB.
  • the downlink data includes at least one of the following: physical downlink shared channel PDSCH, physical downlink control channel PDCCH, downlink reference signal, and the downlink reference signal includes at least one of the following: channel state information reference signal CSI-RS, tracking reference signal TRS, positioning reference signal PRS etc.
  • the network device can send downlink data in the saved time-frequency resource, thereby improving the utilization rate of the time-frequency resource.
  • the frequency of the first SSB is different from the frequency of the second SSB.
  • the second SSB has a second period
  • the first SSB has a first period
  • the second period is less than or equal to the first period.
  • the second SSB is located in the second field, and the first SSB is located in the first field.
  • the number of first SSBs included in the first field and the number of second SSBs included in the second field are both Q, where Q is a positive integer.
  • the qth first SSB included in the first half-frame and the qth second SSB included in the second half-frame have a quasi-co-located QCL relationship, and the QCL relationship includes at least one of the following: quasi-co-located type A QCL-TypeA, quasi-co-located Co-location type D QCL-TypeD, q is a positive integer less than or equal to Q.
  • a communication device including:
  • a transceiver unit configured to receive first configuration information from a network device. Wherein, the first configuration information is used to configure the paging search space set in the first bandwidth part BWP and the second BWP.
  • the transceiver unit is also used to receive the first downlink control information DCI in the paging search space set configured in the first BWP, the first DCI includes short message information, and the first DCI is not used for Scheduling paging physical downlink shared channel PDSCH.
  • the transceiver unit is further configured to receive the second DCI in the paging search space set configured in the second BWP, the second DCI includes short message information, and the second DCI can schedule the paging PDSCH.
  • processing unit may be configured to decode the first DCI and the second DCI, so as to acquire short message information.
  • a communication device including:
  • the transceiver unit is configured to send the first configuration information to the first terminal.
  • the first configuration information is used to configure the paging search space set in the first bandwidth part BWP and the second BWP.
  • the transceiver unit is further configured to send the first downlink control information DCI to the first terminal from the paging search space set configured in the first BWP, the first DCI includes short message information, and the first DCI is not used for scheduling paging physical downlink Shared channel PDSCH.
  • the transceiver unit is further configured to send the second DCI in the paging search space set configured in the second BWP, the second DCI includes short message information, and the second DCI can schedule the paging PDSCH.
  • processing unit may be configured to generate the first configuration information, the first DCI, and the second DCI.
  • a communication device including:
  • a transceiver unit configured to receive first configuration information from a network device.
  • the first configuration information is used to configure the random access RA search space set in the first BWP, and the paging search space set is not included in the first BWP.
  • the transceiver unit is further configured to receive short message information from the network device at the first BWP.
  • the transceiver unit is further configured to receive short message information from the network device at the first BWP, the short message information is carried on the first PDSCH, and the first PDSCH Scheduled by the PDCCH scrambled by the random access radio network temporary identifier RA-RNTI. or,
  • the transceiver unit is also used to receive short message information from the network device at the first BWP, the short message information is carried on the second PDCCH, the second PDCCH is scrambled by RA-RNTI, and the short message information includes public early warning system PWS notification information . or,
  • the transceiver unit is also used to receive short message information from the network device at the first BWP, the short message information is carried on the third PDCCH, and the third PDCCH is scrambled by the temporary cell wireless network temporary identifier TC-RNTI.
  • a communication device including:
  • the transceiver unit sends the first configuration information to the first terminal.
  • the first configuration information is used to configure the random access RA search space set in the first bandwidth part BWP, and the network device does not configure the paging search space set in the first BWP.
  • the transceiving unit is further configured to send short message information to the first terminal at the first BWP.
  • the transceiver unit is further configured to send short message information to the first terminal at the first BWP, the short message information is carried on the first PDSCH, and the first The PDSCH is scheduled by the PDCCH scrambled by the random access radio network temporary identifier RA-RNTI. or,
  • the transceiver unit is also used to send short message information to the first terminal at the first BWP, the short message information is carried on the second PDCCH, the second PDCCH is scrambled by RA-RNTI, and the short message information includes the public early warning system PWS notification information. or,
  • the transceiver unit is further configured to send short message information to the first terminal at the first BWP, the short message information is carried on the third PDCCH, and the third PDCCH is scrambled by the temporary cell radio network temporary identifier TC-RNTI.
  • a communication device including:
  • a transceiver unit configured to receive first configuration information from a network device.
  • the first configuration information is used to configure a paging search space set in the first bandwidth part BWP and in the second BWP, and the paging search space set is used for the first terminal to monitor the paging PDCCH.
  • the transceiver unit is further configured to receive first indication information, where the first indication information is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the processing unit is used to monitor the paging PDCCH in a BWP.
  • the first configuration information is further used to configure the paging occasion PO in the first BWP and in the second BWP.
  • the transceiver unit is further configured to receive second indication information, where the second indication information instructs the first terminal to monitor the first indication information at the second BWP.
  • the first configuration information is also used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the Random access is performed within a BWP.
  • the transceiving unit is further configured to receive a fourth DCI from the network device in the paging search space set configured in the first BWP, and the fourth DCI includes short message information.
  • a communication device including:
  • the transceiver unit is configured to send the first configuration information to the first terminal.
  • the first configuration information is used to configure a paging search space set in the first bandwidth part BWP and in the second BWP, and the paging search space set is used for the first terminal to monitor the paging PDCCH.
  • the transceiver unit is further configured to send first indication information, where the first indication information is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the first configuration information is further used to configure the paging occasion PO in the first BWP and in the second BWP.
  • the transceiver unit is further configured to send second indication information, where the second indication information instructs the first terminal to monitor the first indication information at the second BWP.
  • the transceiver unit is further configured to send the second configuration information to the second terminal.
  • the second configuration information is used to configure the paging search space set in the second BWP, and is used to configure the PO in the second BWP.
  • the first configuration information is also used to configure a random access RA search space set in the first BWP, and the RA search space set is used by the first terminal in the Random access is performed within a BWP.
  • the transceiver unit is further configured to send the fourth DCI in the paging search space set configured in the first BWP, where the fourth DCI includes short message information.
  • a communication device including:
  • the transceiver unit is configured to receive a first synchronization signal block SSB from the network device, the first SSB includes a physical broadcast channel PBCH, the PBCH is used to carry information about a master information block MIB, and the first SSB is used to determine the first cell connected to the first terminal.
  • PBCH physical broadcast channel
  • MIB master information block
  • the transceiver unit is configured to receive a first synchronization signal block SSB from the network device, the first SSB includes a physical broadcast channel PBCH, the PBCH is used to carry information about a master information block MIB, and the first SSB is used to determine the first cell connected to the first terminal.
  • a processing unit configured to determine to connect to the first cell according to the first SSB.
  • the transceiver unit is further configured to receive configuration information of the second SSB from the network device in the first cell.
  • the transceiver unit is further configured to receive a second SSB from the network device, the second SSB does not include the PBCH, and the second SSB includes at least one secondary synchronization signal SSS.
  • the processing unit is further configured to perform measurements according to the second SSB.
  • the transceiver unit is further configured to receive downlink data in a PRB that does not transmit the second SSB. or,
  • the transceiver unit is further configured to receive downlink data in REs that do not transmit the second SSB.
  • the downlink data includes at least one of the following: physical downlink shared channel PDSCH, physical downlink control channel PDCCH, downlink reference signal, and the downlink reference signal includes at least one of the following: channel state information reference signal CSI-RS, tracking reference signal TRS, positioning reference signal PRS etc.
  • a communication device including:
  • a transceiver unit configured to send a first synchronization signal block SSB to the first terminal, where the first SSB includes a physical broadcast channel PBCH, where the PBCH is used to carry master information block MIB information, and the first SSB is used to determine the first cell connected to the first terminal .
  • PBCH physical broadcast channel
  • MIB master information block
  • the transceiver unit is further configured to send configuration information of the second SSB to the first terminal in the first cell.
  • the transceiver unit is further configured to send the second SSB to the first terminal according to the configuration information of the second SSB, the second SSB does not include the PBCH, and the second SSB includes at least one secondary synchronization signal SSS.
  • the transceiver unit is further configured to send downlink data in PRBs that do not transmit the second SSB. or,
  • the transceiver unit is further configured to send downlink data on REs that do not transmit the second SSB.
  • the downlink data includes at least one of the following: physical downlink shared channel PDSCH, physical downlink control channel PDCCH, downlink reference signal, and the downlink reference signal includes at least one of the following: channel state information reference signal CSI-RS, tracking reference signal TRS, positioning reference signal PRS etc.
  • a communication device including a communication interface and at least one processor.
  • the memory is used to store computer programs.
  • the processor executes the computer programs or instructions stored in the memory, so that the communication device executes the method in the first aspect or its various implementations. Or, make the communication device execute the method in the second aspect or its various implementation manners. Or, make the communication device execute the method in the third aspect or its various implementation manners.
  • the memory may be located in the processor, or implemented by a chip independent of the processor, which is not specifically limited in this application.
  • a computer-readable storage medium including a computer program.
  • the computer program When the computer program is run on a computer, the computer is made to execute the method in the first aspect or various implementations thereof. Or, make the computer execute the method in the second aspect or various implementations thereof. Or, make the computer execute the method in the third aspect or various implementations thereof.
  • a chip is provided, and a processing circuit is disposed on the chip, and the processing circuit is used to execute the method in the first aspect or various implementations thereof.
  • the processing circuit is configured to execute the method in the second aspect or various implementations thereof.
  • the processing circuit is configured to execute the method in the third aspect or various implementations thereof.
  • a computer program product includes: a computer program (also referred to as code, or an instruction), when the computer program is executed, the computer executes the first aspect or various implementations thereof method in . Or, make the computer execute the method in the second aspect or various implementations thereof. Or, make the computer execute the method in the third aspect or various implementations thereof.
  • a computer program also referred to as code, or an instruction
  • Fig. 1 shows the system architecture applicable to the embodiment of the present application.
  • Fig. 2 shows an example of a schematic interaction diagram of the method proposed in this application.
  • Fig. 3 shows an example of a schematic interaction diagram of the method proposed in this application.
  • Fig. 4 shows an example of a schematic interaction diagram of the method proposed in this application.
  • Fig. 5 shows an example of a schematic interaction diagram of the method proposed in this application.
  • Figure 6 shows the time-frequency format of the first SSB.
  • Fig. 7 shows several possible time-frequency formats of the second SSB.
  • Fig. 8 shows a schematic block diagram of a communication device provided by this application.
  • Fig. 9 shows a schematic block diagram of a communication device provided by this application.
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: 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), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, fifth generation (5th Generation, 5G) system or New Radio (New Radio , NR), and future next-generation communication systems, such as 6G, etc.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • FDD Frequency Division Duplex
  • Time Division Duplex Time Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G fifth generation
  • 5G New Radio
  • NR New Radio
  • the terminal in the embodiment of the present application may refer to user equipment (user equipment, UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal equipment, wireless Communication Device, User Agent, or User Device.
  • the terminal can also be a cellular phone, a cordless phone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with a wireless communication function Handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminals in the 5G network or terminals in the future evolution of the Public Land Mobile Network (PLMN), etc.
  • PLMN Public Land Mobile Network
  • the network device in the embodiment of the present application may be a device for communicating with a terminal, and the network device may be an evolved base station (Evolutional NodeB, eNB or eNodeB) in an LTE system, or a cloud wireless access network (Cloud Radio Access Network (CRAN), or the network device can be a relay station, access point, vehicle-mounted device, wearable device, network device in a 5G network, or a network device in a future evolved PLMN network.
  • Evolutional NodeB, eNB or eNodeB evolved base station
  • CRAN Cloud Radio Access Network
  • the application examples are not limiting.
  • FR1 frequency band mainly use two frequency bands: FR1 frequency band and FR2 frequency band.
  • the frequency range of FR1 frequency band is 450MHz to 6GHz, also known as sub 6GHz frequency band, low frequency; the frequency range of FR2 frequency band is 24.25GHz to 52.6GHz, commonly known as millimeter wave, high frequency.
  • the general NR eMBB UE capability supports a bandwidth of 100MHz in FR1 and a bandwidth of 200MHz in FR2, and the bandwidth of 400MHz in FR2 is optional.
  • NR RedCap UE bandwidth capability supported by NR RedCap UE is smaller than that of existing NR UE (such as eMBB UE) is that the smaller bandwidth capability can reduce the implementation complexity of UE and save UE power consumption. This is beneficial to reduce the cost of the UE.
  • the currently considered NR RedCap UE includes three major application scenarios: wearables, industrial wireless sensors and video surveillance equipment.
  • the terminals in this embodiment of the present application include terminals of the first type and terminals of the second type.
  • the first type of terminal is a reduced capability (reduced capability, redcap) terminal
  • the first type of terminal may be called a RedCap UE.
  • the new radio (new radio, NR) system terminals other than the first type of terminals are the second type of terminals.
  • the second type of terminals can be called legacy UEs, or Normal UEs.
  • Normal UEs include NR enhanced mobile broadband (enhanced mobile broadband, eMBB) UE, highly reliable low latency communication (ultra-reliable low latency communication, URLLC) UE, etc.
  • the first terminal belongs to the first type of terminal
  • the second terminal belongs to the second type of terminal.
  • BWP bandwidth part
  • an initial downlink BWP may be introduced separately for RedCap UE.
  • the downlink data in the initial access phase is transmitted in the initial downlink BWP, for example, in the random access procedure (random access procedure)
  • the physical downlink control channel (physical downlink control channel, PDCCH) for scheduling Msg2/4, the paging PDCCH for scheduling paging messages, etc. are all transmitted on control-resource set (CORESET) #0.
  • PDCCH congestion PDCCH blocking
  • the first BWP is one or more initial downlink BWPs additionally referenced, and the first BWP can also be called redcap initial downlink BWP, or redcap specific initial downlink BWP (redcap specific initial DL BWP), or a separate initial downlink BWP (separate initial DL BWP), no limit.
  • the second BWP is the existing initial downlink BWP.
  • the second BWP may also be called a legacy initial downlink BWP, which is not limited.
  • a new initial uplink BWP may be introduced for RedCap UE.
  • a new initial downlink may be introduced for RedCap UE. BWP.
  • a frequency range 1 (frequency range 1, FR1) supports a radio frequency bandwidth capability of 100MHz. Therefore, the initial uplink BWP bandwidth configured by the network device for the Normal UE may exceed the maximum bandwidth capability supported by the RedCap UE.
  • a new initial uplink BWP may be configured for RedCap UE, and the bandwidth of the new initial uplink BWP should not exceed the bandwidth supported by RedCap UE Maximum bandwidth capability.
  • the newly introduced initial uplink BWP is called the RedCap initial uplink BWP.
  • an uplink BWP and a downlink BWP form a BWP pair (BWP pair), and their IDs are the same.
  • the uplink BWP and downlink BWP of a BWP pair have the same center frequency.
  • the initial uplink BWP and the initial downlink BWP are a BWP pair and should have the same center frequency. It is generally believed that the BWP ID of the initial BWP is 0.
  • the newly introduced RedCap initial uplink BWP for RedCap UE may not be aligned with the center frequency of the Legacy initial downlink BWP, for example, it may not be aligned with the center frequency of CORESET#0 configured in the main information block (MIB), or configured with SIB1
  • the center frequencies of the initial downlink BWP of the legacy are not aligned. Therefore, in addition to the reasons for expanding the capacity above, it may be possible to introduce a new initial downlink BWP for RedCap UE in order to maintain the center frequency alignment of the initial uplink and downlink BWP of RedCap UE.
  • the random access search space set can be configured for the RedCap UE in the downlink BWP dedicated to the RedCap UE.
  • RedCap UE performs random access, in order to obtain short message information such as system message changes, it needs to perform radio frequency switching, and monitor the paging PDCCH in the initial downlink BWP of the legacy, resulting in increased power consumption of RedCap UE. If RedCap UE does not perform radio frequency switching, RedCap UE may not obtain short message information in time, and may initiate random access multiple times and fail many times, resulting in increased power consumption and access delay of RedCap UE.
  • the present application proposes method 200 and method 300 .
  • the method 200 and the method 300 will be described in detail below with reference to FIG. 2 and FIG. 3 .
  • FIG. 2 is a schematic diagram of a communication method 200 provided by an embodiment of the present application.
  • the method 200 includes the following steps:
  • the network device sends first configuration information to the first terminal, the first configuration information is used to configure a paging search space set in the first bandwidth part (bandwidth part, BWP) and the second BWP, wherein, in the second BWP
  • the paging search space set is used for the first terminal to monitor the paging PDCCH in the second BWP to monitor short message information or whether the first terminal is paged
  • the paging search space set in the first BWP is used for the first terminal
  • the paging PDCCH is monitored at the first BWP to monitor short message information.
  • the first terminal receives the first configuration information.
  • the configuration of the paging search space set in the first BWP is the same as the configuration of the paging search space set in the second BWP
  • the configuration of the paging search space set includes at least one of the following: a listening period, Period offset, number of consecutive time slots for each listening opportunity, listening symbols in the listening opportunity, candidate physical downlink control channel PDCCH aggregation level, number of PDCCH candidates corresponding to the candidate PDCCH aggregation level, search space set type, search space association DCI format.
  • the configuration of the paging search space set in the first BWP is exactly the same as the configuration of the paging search space set in the second BWP.
  • the network device only needs to use the same paging search space set in the second BWP, and does not need to separately configure the paging search space set for the first BWP, that is, no new radio resource control (radio resource control, RRC) configuration signaling can save signaling overhead.
  • radio resource control radio resource control
  • the first configuration information includes the configuration of the paging search space set in the second BWP and indication information #A
  • the indication information #A is used to indicate the configuration of the paging search space set in the first BWP and the configuration of the paging search space set in the second BWP.
  • the configuration of the search space set is the same.
  • the first configuration information includes the configuration of the second paging search space set in the BWP, and the configuration of the first paging search space set in the BWP and the configuration of the second paging search space set in the BWP may be predefined by the protocol. same. At this time, the network device does not need to send the indication information #A to the first terminal.
  • the configuration of the paging search space set in the first BWP is different from the configuration of the paging search space set in the second BWP.
  • the first configuration information includes the configuration of the paging search space set in the first BWP and the configuration of the paging search space set in the second BWP.
  • the first configuration information is also used to configure a random access (random access, RA) search space set in the first BWP, and configure a paging occasion (paging occasion, PO) in the first BWP and the second BWP, wherein , the RA search space set is used by the first terminal to perform RA in the first BWP.
  • RA random access
  • PO paging occasion
  • the configuration of the PO in the first BWP is the same as the configuration of the PO in the second BWP.
  • the PO configuration includes at least one of the following:
  • the default paging cycle The default paging cycle, the proportion of paging frames in the radio frame, the paging frame offset, the number of paging opportunities included in each paging frame, the first physical downlink control of each PO included in the paging frame.
  • PDCCH physical downlink control channel
  • the parameters included in the configuration of the above PO are the same in the two BWPs.
  • the ratio of the paging frames in the radio frame and the number of paging occasions in the paging frames in the first BWP and the second BWP are the same.
  • the paging frame offset is also the same, the paging frames of the two BWPs are also aligned in the time domain, that is, if a radio frame is a paging frame in the second BWP, the radio frame with the same time
  • the first BWP is also a paging frame, otherwise, a radio frame is not a paging frame at both the second BWP and the first BWP.
  • the POs belonging to the first terminal have the same time domain positions in the two BWPs. It should be understood that the two BWPs refer to the first BWP and the second BWP, and the same applies hereinafter.
  • the PO belonging to the first terminal may also be called the first terminal's own PO, that is, the first terminal's own PO calculated by the first terminal, or the PO corresponding to the first terminal, and the first terminal may also be called its own PO.
  • the terminal on the corresponding PO may also be called the first terminal's own PO, that is, the first terminal's own PO calculated by the first terminal, or the PO corresponding to the first terminal, and the first terminal may also be called its own PO.
  • the first terminal can monitor the paging PDCCH at the PO belonging to the first terminal at the same time domain position, which can ensure The first terminal can monitor the PO belonging to the first terminal in each paging discontinuous reception (DRX) cycle, so that the probability that the first terminal misses short message information is reduced.
  • DRX discontinuous reception
  • the first configuration information includes the configuration of the PO in the second BWP and indication information #B, where the indication information #B is used to indicate that the configuration of the PO in the first BWP is the same as the configuration of the PO in the second BWP.
  • the first configuration information includes the configuration of the PO in the second BWP, and it may be predefined by a protocol that the configuration of the PO in the first BWP is the same as the configuration of the PO in the second BWP. At this time, the network device does not need to send the indication information #B to the first terminal.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP, and the partial configuration includes the proportion of the paging frame in the radio frame and the paging frame offset;
  • the number of paging occasions in the paging frame in the first BWP is smaller than the number of paging occasions in the paging frame in the second BWP.
  • the number of paging occasions in the paging frame in the second BWP is not limited, and it is stipulated that the number of paging occasions in the paging frame in the first BWP is equal to 1.
  • the first configuration information includes the configuration of the number of paging occasions in the first intra-BWP paging frame and the configuration of the number of paging occasions in the second intra-BWP paging frame.
  • the first BWP represents the initial downlink BWP of RedCap and the second BWP represents the initial downlink BWP of Legacy
  • the number of paging frames in the initial downlink BWP of RedCap and the number of paging frames in the initial downlink BWP of Legacy The number of frames is the same, but the total number of paging opportunities in RedCap's initial downlink BWP is less than or equal to the number of total paging opportunities in Legacy's initial downlink BWP.
  • the network The number of paging PDCCHs sent by the device in the initial downlink BWP of RedCap can be reduced, which can reduce the paging PDCCH resource overhead, reduce the power consumption of network equipment, and improve resource utilization efficiency.
  • the formula for calculating the UE's own PO in the two BWPs can refer to Existing 3GPP agreement.
  • the first configuration information may be carried by one message or by multiple messages, without limitation.
  • the first part of the first configuration information is carried by SIB1
  • the second part of the first configuration information is carried by SIB2.
  • the network device sends a second DCI in the paging search space set configured in the second BWP, the second DCI includes short message information, and the second DCI can schedule a paging PDSCH.
  • the second BWP is an active BWP, the first terminal receives the second DCI.
  • the first terminal Before the first terminal performs RA, the first terminal may monitor the paging PDCCH in the set of paging search spaces configured in the second BWP. When the network device needs to send short message information to the first terminal, the network device may send the second DCI in the paging search space set configured in the second BWP.
  • the second DCI can also schedule a paging physical downlink shared channel (physical downlink shared channel, PDSCH). That is, the second DCI has the same function as the DCI carried by the current paging PDCCH.
  • PDSCH physical downlink shared channel
  • the second BWP is the initial downlink BWP of Legacy.
  • RRC idle state or RRC inactive state when the first terminal is not performing RA, it monitors the paging PDCCH in the second BWP to monitor whether the first terminal is paged. call.
  • short message information includes but is not limited to one or more of the following:
  • System information update (SI update, or system information modification, SI modification) information
  • public warning system public warning system, PWS) notification information
  • PWS notification information includes: earthquake/tsunami warning system (earthquake and tsunami warning system, ETWS) notification information, commercial mobile alert service (commercial mobile alert service, CMAS) notification information.
  • the paging search space set configured by the network device in the first BWP sends the first DCI to the first terminal, the first DCI includes short message information, and the first DCI is not used for scheduling the paging PDSCH.
  • the first terminal receives the first DCI.
  • the network device configures the RA search space set of the first terminal in the first BWP, when the first terminal is paged, the first terminal performs radio frequency (radio frequency, RF) switching (switch or return), from the second The BWP switches to the first BWP, and the RA search space set configured in the first BWP performs RA.
  • radio frequency radio frequency
  • the network device may send the first DCI to the first terminal in the paging search space set configured in the first BWP.
  • the first terminal can monitor the paging PDCCH in the PO belonging to the first terminal, and the paging search space set configured in the first BWP, so the short message category can be obtained from the first DCI. information.
  • the first terminal when the first terminal performs RA in the first BWP, in order to obtain short message information, the first terminal may monitor the paging PDCCH in the paging search space set configured in the first BWP.
  • the first terminal does not need to perform RF handover, that is, the first terminal does not need to switch to the second BWP, and the paging search space set configured in the second BWP monitors the paging PDCCH to obtain short message information. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, the access delay can be reduced, the delay of obtaining short message information can be reduced, and the UE complexity can be reduced.
  • the first terminal monitors the paging PDCCH at the PO belonging to the first terminal, and does not monitor the paging at the POs of other terminals. PDCCH.
  • the first terminal does not encounter a PO belonging to the first terminal when the RedCap initial downlink BWP executes the RA process, then the first terminal does not need to monitor the paging PDCCH when executing the RA process, and does not need to switch the RF to Legacy Initial downlink BWP.
  • the process of performing RA by the first terminal at the first BWP includes that the first terminal monitors the PDCCH scrambled by the RA-RNTI or the TC-RNTI at the first BWP.
  • the first terminal monitors the paging PDCCH at the PO belonging to the first terminal.
  • the random access contention resolution timer (ra-ContentionResolutionTimer) of the first terminal encounters a PO belonging to the first terminal while running, the first terminal monitors the paging PDCCH at the PO belonging to the first terminal.
  • the first terminal may also monitor the paging PDCCH at a PO not belonging to the first terminal, so as to obtain short message information.
  • a short message information notification occurs, such as a system message is updated, or a network device needs to send a PWS notification, the network device will send a paging PDCCH on both the first BWP and the second BWP to carry short message information .
  • the paging PDCCH sent by the network device on the paging search space set configured in the initial downlink BWP of the RedCap is also scrambled by a paging-radio network temporary identity (P-RNTI). That is, the first DCI is also scrambled by the P-RNTI.
  • P-RNTI paging-radio network temporary identity
  • one PDCCH is scrambled by one RNTI, which means that the cyclic redundancy check (Cyclic redundancy check, CRC) of the DCI carried by the PDCCH is scrambled by the RNTI.
  • CRC Cyclic redundancy check
  • the format of the DCI scrambled by the P-RNTI sent by the network device in the initial downlink BWP of the RedCap is the same as the format of the DCI scrambled by the P-RNTI sent by the network device in the initial downlink BWP of the Legacy.
  • the DCI scrambled by the P-RNTI is called paging DCI, and the paging DCI includes a short message indication field and a short message field.
  • the short message domain is used to carry short message information.
  • 3rd generation partnership project 3rd generation partnership project, 3GPP
  • Table 1 the corresponding relationship between the bit field of the short message indication field and the meaning of the short message indication field is shown in Table 1 below.
  • the first terminal may also learn that the short message indication field in the first DCI can only be set to "00" or "10". If the short message indication field in the first DCI received by the first terminal is set to "11" or "01", the first terminal may regard the first DCI as a false alarm DCI or a DCI sent to other UEs, At this time, the first terminal may ignore the first DCI.
  • the network device is configured, or specified in a protocol, the first DCI includes a first bit field, and the first bit field is set to a first preset value or is reserved.
  • the first bit field is a bit field in the first DCI except the short message indication field and the short message field.
  • all the first bit fields are set to 1.
  • the first bit field is all set to 0. That is to say, the first preset value is all 1s or all 0s.
  • frequency domain resource assignment indication domain
  • time domain resource assignment indication domain
  • virtual resource block-to-physical resource block mapping virtual resource block-to-physical resource block mapping
  • VRB-to-PRB mapping virtual resource block-to-PRB mapping
  • modulation and coding scheme modulation and coding scheme
  • transport block scaling factor TB scaling
  • the first paging message does not actually include PDSCH scheduling information. That is, the first terminal cannot obtain the scheduling information of the PDSCH from the first DCI.
  • the short message indication field in the first DCI can only be set to "00" or "10", as shown in Table 1; or, the short message indication field in the first DCI can also be set to "01” or "11", but at this time "01" or "11" no longer represent the functions shown in Table 1, these two states (ie "01” or "11") can be set as reserved states, or represent other functions.
  • the network device is configured, or specified in a protocol, the first DCI includes a first bit field, and the first bit field is set to a first preset value or is reserved.
  • the first bit field is a bit field in the first DCI except the short message field.
  • the first bit field also includes a short message indication field, and the short message indication field may also be set as a first preset value or reserved.
  • the format of the short message indication field in the first DCI is not limited, that is, the short message indication field can be set to any one of "00", “01”, “10", and “11”, but the first terminal only obtains A short message domain in the first DCI. That is to say, if the short message indication field is set to "10", it means that there is short message information, and the first terminal only obtains the short message field in the first DCI, and ignores other information fields; otherwise, if the short message indication field If it is set to any one of "00", "01", or "11", the first terminal ignores the DCI.
  • the UE only obtains the short message field in the first DCI and ignores the scheduling information of the PDSCH in the first DCI, that is, the UE does not receive or decode the paging PDSCH.
  • the short message indication field is set to "01” it means that there is no short message, that is, no SI update/PWS notification occurs.
  • the UE also ignores the scheduling information of the PDSCH in the first DCI, that is, the UE does not receive or Decode paging PDSCH.
  • the network device may not send the paging PDSCH.
  • the network device may also send a paging PDSCH, where the PDSCH may be a PDSCH sent to other terminals.
  • FIG. 3 is a schematic diagram of a communication method 300 provided by an embodiment of the present application.
  • the method 300 includes the following steps:
  • the network device sends first configuration information to the first terminal.
  • the first configuration information is used to configure an RA search space set in the first BWP.
  • the RA search space set is used for the first terminal to perform RA in the first BWP.
  • the first BWP does not include the paging search space set.
  • the first terminal receives the first configuration information.
  • the first configuration information is also used to configure the paging search space set in the second BWP.
  • the first terminal monitors the paging PDCCH in the paging search space set configured in the second BWP.
  • the second BWP is the initial downlink BWP of Legacy.
  • RRC idle (idle) state or RRC inactive state when the UE is not performing RA, it monitors the paging PDCCH in the second BWP to monitor whether the first terminal is paged.
  • the first terminal When the first terminal is paged, the first terminal performs RF handover, switches to the first BWP, and performs RA in the RA search space set configured in the first BWP.
  • the execution of RA by the first terminal on the first BWP may also mean that the first terminal has data to send to the network device, so the first terminal executes the RA process spontaneously.
  • the network device sends short message information to the first terminal at the first BWP.
  • the first terminal receives short message information.
  • the existing RA process includes 4-step RA and 2-step RA, wherein 4-step RA includes the following steps.
  • Step 1 The first terminal sends a message 1 (message1, Msg1). Correspondingly, the network device receives message 1.
  • Step 2 The first terminal monitors the PDCCH scrambled by the random access radio network temporary identifier RA-RNTI in the RA search space set.
  • Step 3 The network device sends DCI#A on the PDCCH scrambled by the RA-RNTI, and the DCI#A includes the first scheduling information of the PDSCH. Correspondingly, the first terminal receives DCI#A.
  • Step 4 The network device sends a message 2 (message2, Msg2) on the PDSCH scheduled by the PDCCH scrambled by the RA-RNTI, and the message 2 includes a random access response (random access response, RAR) of the first terminal.
  • the RAR is used to schedule the physical uplink shared channel (PUSCH).
  • the first terminal receives message 2.
  • Step 5 The first terminal sends a message 3 (message3, Msg3) on the PUSCH scheduled by the RAR.
  • the network device receives message 3.
  • Step 6 The first terminal monitors the PDCCH scrambled by the radio network temporary identifier TC-RNTI of the temporary cell in the RA search space set.
  • Step 7 The network device sends the DCI#B on the PDCCH scrambled by the TC-RNTI, and the first terminal receives the DCI#B accordingly.
  • the DCI#B includes the second scheduling information of the PDSCH.
  • DCI#B includes information about scheduling retransmission message 3 .
  • Step 8 The network device sends a message 4 (message4, Msg4) on the PDSCH scheduled by the PDCCH scrambled by the TC-RNTI, and the message 4 includes the contention resolution identifier of the first terminal. Correspondingly, the first terminal receives message 4.
  • a message 4 (message4, Msg4)
  • Msg4 the message 4 includes the contention resolution identifier of the first terminal.
  • the first terminal receives message 4.
  • the following introduces several possible situations in which the network device sends short message information to the first terminal at the first BWP during the process of the first terminal performing RA in the RA search space set.
  • the network device sends short message information to the first terminal at the first BWP, the short message information is carried on the first PDSCH, and the first PDSCH is scheduled by the PDCCH scrambled by the RA-RNTI.
  • the first terminal receives short message information.
  • message 2 may carry short message information.
  • the short message information notification carried in the Msg2PDSCH is a public message, and only one piece of indication information needs to be included in one PDSCH, and all UEs receiving the Msg2PDSCH can obtain the indication information.
  • Msg2PDSCH includes 2 bits, one of which is used to indicate whether SI update occurs, and the other bit is used to indicate whether there is a PWS notification.
  • the network device sends short message information to the first terminal on the first BWP.
  • the short message information is carried on the second PDCCH.
  • the second PDCCH is scrambled through RA-RNTI.
  • the short message information includes public early warning system PWS notification information.
  • the first terminal receives short message information.
  • the short message information may also include SI update information.
  • an information field may be added to the RA-RNTI scrambled DCI or part of the reserved information fields may be used to carry short message information.
  • short message information may be carried in DCI#A.
  • the network device sends short message information to the first terminal at the first BWP, the short message information is carried on the third PDCCH, and the third PDCCH is scrambled through the TC-RNTI.
  • the first terminal receives short message information.
  • an information field may be added to the DCI scrambled by the TC-RNTI or part of the reserved information field may be used to carry short message information.
  • short message information may be carried in DCI#B.
  • the format of DCI#B includes DCI format 1_0 and DCI format 0_0.
  • the network device may send short message information to the first terminal in the first BWP. Therefore, when the first terminal executes RA in the first BWP, it does not need to execute RF handover in order to acquire short message information. That is, the first terminal does not need to switch to the second BWP to monitor the paging PDCCH in the paging search space set in the second BWP in order to acquire short message information. Therefore, by adopting the solution of the present application, the power consumption of the first terminal can be effectively reduced, and the complexity of the first terminal can be reduced.
  • the UE has a paging discontinuous reception (DRX) cycle in the radio resource control (radio resource control, RRC) idle (idle)/inactive (inactive) state, and the UE performs the corresponding paging in each paging DRX cycle
  • the paging occasion (PO) monitors the paging PDCCH.
  • the paging DRX cycle is generally long, such as 1.28 seconds.
  • the UE Before the UE wakes up to monitor the paging PDCCH after a long sleep, it generally needs to perform measurements first, such as performing time/frequency tracking (or time/frequency tracking), automatic Gain control adjustment (automatic gain control, AGC), and/or beam selection (beam selection), etc.
  • the UE In the RRC idle/inactive state, the UE generally implements time-frequency tracking, AGC adjustment and/or beam selection by receiving a synchronization signal block (SS/PBCH block, SSB).
  • SS/PBCH block synchronization signal block
  • the UE needs to receive the defined cell SSB (cell-defining SSB, CD-SSB) before monitoring the paging PDCCH to perform time-frequency synchronization, AGC adjustment and/or beam selection, etc., and then The radio frequency (radio frequency, RF) is switched to RedCap's initial downlink BWP to monitor the paging PDCCH. It can be seen that the UE needs to perform RF switching between receiving CD-SSB and monitoring the paging PDCCH, which will increase UE power consumption.
  • SSB cell-defining SSB, CD-SSB
  • RF radio frequency
  • the paging message of the Normal UE in the initial downlink BWP of the Legacy and the paging message of the RedCap UE in the initial downlink BWP of the RedCap can be accommodated through a paging PDSCH, but , the network device needs to send the paging PDCCH and the paging PDSCH in the two BWPs respectively. It can be seen that sending paging messages for Normal UE and RedCap UE respectively at two BWPs will increase the paging resource overhead. It should be understood that, in this document, the two BWPs refer to the RedCap initial downlink BWP and the Legacy initial downlink BWP.
  • RedCap UE does not need to switch RF between CD-SSB and listening to paging PDCCH. There is also no need to configure an additional SSB for measurement for the RedCap UE in addition to the CD-SSB.
  • FIG. 4 is a schematic diagram of a communication method 400 provided by an embodiment of the present application.
  • the method 400 includes the following steps:
  • the network device sends first configuration information to the first terminal, where the first configuration information is used to configure a paging search space set in the first BWP and in the second BWP, and the paging search space set is used for the first terminal to monitor paging PDCCH, to monitor short message information or monitor whether the first terminal is paged.
  • the first terminal receives the first configuration information.
  • the configuration of the paging search space set in the first BWP is the same as the configuration of the paging search space set in the second BWP.
  • the description in S201 refer to the description in S201.
  • the configuration of the paging search space set in the first BWP is different from the configuration of the paging search space set in the second BWP.
  • the description in S201 refer to the description in S201.
  • the first configuration information is also used to configure the paging occasion PO in the first BWP and in the second BWP.
  • the network device sends first indication information, where the first indication information is used to instruct the first terminal to monitor a BWP of the paging PDCCH from the first BWP and the second BWP.
  • the first terminal receives the first indication information.
  • the first indication information is also used to indicate whether the first terminal monitors the paging PDCCH.
  • the first indication information may be a paging early indication (paging early indication, PEI).
  • PEI paging early indication
  • the first terminal monitors the paging PDCCH at a BWP indicated by the first indication information.
  • the first terminal monitors the paging PDCCH at a BWP indicated by the first indication information.
  • the first indication information indicates that the first terminal monitors the paging PDCCH in the first BWP, and then the first terminal monitors the paging PDCCH in the paging search space set in the first BWP.
  • the first indication information indicates that the first terminal monitors the paging PDCCH in the second BWP, and then the first terminal monitors the paging PDCCH in the paging search space set in the second BWP.
  • the first terminal when the first indication information indicates that the first terminal does not monitor the paging PDCCH, the first terminal does not monitor the paging PDCCH. That is, only when the first indication information indicates that the first terminal monitors the paging PDCCH, the information indicating which BWP the first terminal monitors the paging PDCCH in the first indication information will take effect.
  • the information indicating in which BWP the first terminal monitors the paging PDCCH in the first indication information is reserved or set to a specific value , such as setting to all 0s or all 1s, or to indicate other functions.
  • the network device can configure a paging search space set for the first terminal in the first BWP and the second BWP, and instruct the first terminal to monitor paging in the first BWP or the second BWP through the first indication information PDCCH, so as to realize dynamic paging load balancing.
  • the network device configures the first terminal to monitor the first indication information in the second BWP (for example, the Legacy initial downlink BWP), and only when the paging capacity in the second BWP is insufficient, the first terminal is switched to the first BWP (for example, the The RedCap initial downlink BWP) monitors the paging (paging) PDCCH, which can reduce the RF handover of the UE and reduce the paging resource overhead.
  • the first BWP for example, the Legacy initial downlink BWP
  • the first BWP for example, the The RedCap initial downlink BWP
  • the method 400 also includes S411:
  • the network device sends second indication information, where the second indication information instructs the first terminal to monitor the first indication information at the second BWP.
  • the first terminal receives the second indication information.
  • the first terminal may be configured or stipulated in a protocol, so that the first terminal monitors the first indication information at the second BWP.
  • the network device sends the second configuration information to the second terminal.
  • the second terminal receives the second configuration information.
  • the second configuration information is used for configuring the paging search space set in the second BWP, and for configuring the PO in the second BWP.
  • the second indication information is further used to instruct the second terminal to monitor the first indication information at the second BWP, and the first indication information is also used to indicate whether the second terminal monitors the paging PDCCH.
  • the first terminal and the second terminal monitor the same first indication information.
  • the second terminal monitors the paging PDCCH in the paging search space set in the second BWP.
  • the first indication information may also instruct some second-type terminals to monitor the paging PDCCH at the first BWP.
  • the network device may instruct some second-type terminals to listen to the paging PDCCH on the first BWP for load balancing.
  • the first configuration information includes second configuration information.
  • the first configuration information and the second configuration information are carried in the same message, such as SIB1, and both the first terminal and the second terminal can receive the first configuration information and the second configuration information.
  • the first configuration information is also used to configure an RA search space set for the first terminal in the first BWP, and the RA search space set is used for the first terminal to configure Execute RA.
  • the method 400 also includes:
  • the paging search space set configured by the network device in the first BWP sends the fourth DCI to the first terminal, where the fourth DCI includes short message information.
  • the first terminal receives the fourth DCI.
  • the following describes how the first terminal performs RA in the first possible situation.
  • the first terminal monitors the first indication information on the second BWP.
  • the first terminal monitors the paging PDCCH in the paging search space set in the first BWP. If the first terminal is paged, the first terminal performs RA on the set of RA search spaces within the first BWP. When the first terminal performs RA in the RA search space set in the first BWP, the first terminal can continue to monitor the paging PDCCH in the paging search space set in the first BWP, so that it can obtain the short message category from the fourth DCI information. If the first terminal is not paged, the first terminal returns to the second BWP to monitor the next first indication information.
  • the first terminal monitors the paging PDCCH in the paging search space set in the second BWP. If the first terminal is paged, the first terminal performs RF handover, and the set of RA search spaces within the first BWP performs RA. When the first terminal performs RA in the RA search space set in the first BWP, the first terminal can continue to monitor the paging PDCCH in the paging search space set in the first BWP, so that it can obtain the short message category from the fourth DCI information. If the first terminal is not paged, the first terminal continues to monitor the next first indication information at the second BWP.
  • the first configuration information is also used to configure the RA search space set in the second BWP for the first terminal.
  • the method 400 also includes:
  • the paging search space set configured by the network device in the second BWP sends the fifth DCI to the first terminal, where the fifth DCI includes short message information.
  • the first terminal receives the fifth DCI.
  • the following describes how the first terminal performs RA in the second possible situation.
  • the first terminal monitors the first indication information on the second BWP.
  • the first terminal monitors the paging PDCCH in the paging search space set in the first BWP. If the first terminal is paged, the first terminal performs RF handover, and the first terminal performs RA in the set of RA search spaces within the second BWP. When the first terminal performs RA in the RA search space set in the second BWP, the first terminal can continue to monitor the paging PDCCH in the paging search space set in the second BWP, so that the short message class can be obtained from the fifth DCI information. If the first terminal is not paged, the first terminal returns to the second BWP to monitor the next first indication information.
  • the first terminal monitors the paging PDCCH in the paging search space set in the second BWP. If the first terminal is paged, the first terminal performs RA on the set of RA search spaces within the second BWP. When the first terminal performs RA in the RA search space set in the second BWP, the first terminal can continue to monitor the paging PDCCH in the paging search space set in the second BWP, so that the short message class can be obtained from the fifth DCI information. If the first terminal is not paged, the first terminal continues to monitor the next first indication information at the second BWP.
  • PEI is only for the first type of terminal.
  • the PEI indicates whether the first type of terminal monitors the paging PDCCH, and indicates to the first type of terminal which BWP monitors the paging PDCCH from the first BWP and the second BWP.
  • the PEI targets the first type of terminal and the second type of terminal.
  • the PEI indicates whether the first type of terminal and the second type of terminal monitor the paging PDCCH, and indicates to the first type of terminal which BWP monitors the paging PDCCH from the first BWP and the second BWP. It should be understood that the above-mentioned first terminal belongs to the first type of terminal, and the above-mentioned second terminal belongs to the second type of terminal.
  • the first terminal monitors the paging PDCCH in the PO belonging to the first terminal in the first BWP;
  • the PEI indicates that the first terminal monitors the paging PDCCH in the second BWP, the first terminal monitors the paging PDCCH in the PO belonging to the first terminal in the second BWP;
  • the second terminal monitors the paging PDCCH in the PO belonging to the second terminal in the second BWP.
  • the first BWP indicates the initial downlink BWP of RedCap
  • the second BWP indicates the initial downlink BWP of Legacy.
  • a PEI is associated with one or more POs, and the PEI is used to indicate whether the UE on the PO associated with the PEI monitors the paging PDCCH.
  • the PEI is used to indicate which BWP the RedCap UE on the PO associated with the PEI monitors the paging PDCCH.
  • a PEI is associated with POs on two BWPs, that is, one or more POs on the initial downlink BWP of the Legacy and one or more POs on the initial downlink BWP of the RedCap
  • the PEI is used to indicate whether the UE on the PO associated with the PEI monitors the paging PDCCH.
  • the PEI is used to indicate which BWP the RedCap UE on the PO associated with the PEI monitors the paging PDCCH.
  • Which POs the PEI is specifically associated with can be pre-defined by network device configuration or protocol. For example, PEI is associated with all POs included in one paging frame.
  • the UE monitors the paging PDCCH only on POs belonging to the UE among the POs associated with the PEI.
  • the UE only monitors the PEI on the PEI resource associated with its own PO.
  • the PEI indicates whether the first type of terminal and the second type of terminal monitor the paging PDCCH, and indicates to the first type of terminal a BWP that monitors the paging PDCCH from the first BWP and the second BWP, There are the following two methods.
  • the PEI includes a first bit field and a second bit field, the first bit field indicates whether the first type of terminal and the second type of terminal monitor the paging message, and the second bit field is used to indicate to the first type of terminal A BWP that monitors the paging PDCCH in the second BWP.
  • the PEI includes a third bit field, and the third bit field indicates whether the first type of terminal and the second type of terminal monitor the paging PDCCH, and indicates to the first type of terminal whether to monitor the paging PDCCH from the first BWP and the second BWP. BWP.
  • the above-mentioned method 1 will be described, and the above-mentioned method 1 includes the following three cases.
  • the configuration of the PO in the first BWP is the same as that of the PO in the second BWP.
  • the PEI is associated with N POs in the second BWP, where N is a positive integer. It should be understood that the PEI is also associated with N POs in the first BWP.
  • One PEI is in the N POs associated with two BWPs, for a RedCap UE, if the Legacy initial downlink BWP, the PO belonging to the RedCap UE is the x_ith PO among the N POs associated with the PEI in the Legacy initial downlink BWP , then the RedCap UE's own PO in the RedCap initial downlink BWP is also the x_ith PO among the N POs associated with the PEI in the RedCap initial downlink BWP.
  • the x_ith PO among the N POs associated with PEI in the initial downlink BWP of Legacy and "the x_ith PO among the N POs associated with PEI in the initial downlink BWP of RedCap” are associated POs, or they are called It is a PO with a mapping relationship. At this time, it can also be said that one PEI is associated with 2N POs in two BWPs.
  • the first bit field indicates whether the first-type terminal and the second-type terminal monitor the paging PDCCH, including the following possible situations.
  • the first bit field includes bit i, and the bit i is used to indicate whether all terminals on the i-th PO monitor the paging PDCCH.
  • the first bit field includes bit i1 and bit i2.
  • Bit i1 is used to indicate whether all the first-type terminals on the i-th PO monitor whether to monitor the paging PDCCH
  • bit i2 is used to indicate the Whether all second-type terminals monitor the paging PDCCH.
  • bit i1 to bit ix bits i1 to bit ix have one-to-one correspondence with x group terminals
  • bit i(x+1) to bit i(x+y) and y group terminal bit i(x+1) to bit i(x+y)
  • bit i(x+y) bits in bit i1 to bit ix and bit i(x+1) to bit i(x+y) is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and x and y are positive integers .
  • the number of bits corresponding to (x+y) terminal groups on the i-th PO in the first bit field is (x+y).
  • the number of bits corresponding to (x+y) terminal groups on the i-th PO in the first bit field may be less than (x+y), so as to save signaling overhead.
  • M bits are used to indicate whether (x+y) terminal groups monitor the paging PDCCH.
  • all terminals on the i-th PO are divided into j groups, at least one group of terminals in the j group of terminals includes at least one first-type terminal and at least one second-type terminal, and the first bit field includes bits i1 to bit ij, bit i1 to bit ij correspond to j groups of terminals one by one, each bit in bit i1 to bit ij is used to indicate whether the corresponding group of terminals monitors the paging PDCCH, and j is a positive integer.
  • the terminals of the first type and the terminals of the second type are not distinguished.
  • the number of bits corresponding to a total of j terminal groups on the i-th PO in the first bit field is j.
  • the number of bits in the first bit field corresponding to a total of j terminal groups on the i-th PO may be less than j, so as to save signaling overhead.
  • i is a positive integer less than or equal to N.
  • the second bit field is used to indicate to the first type of terminal a BWP that monitors the paging PDCCH from the first BWP and the second BWP, including the following possible situations.
  • the second bit field includes bit k, and the bit k is used to indicate a BWP that all first-type terminals on the k-th PO monitor the paging PDCCH , k is a positive integer less than or equal to N.
  • the second bit field includes bit m, and the bit m is used to indicate that all first-type terminals on all POs included in the m-th PF monitor a BWP of the paging PDCCH, and m is less than Or a positive integer equal to M.
  • the second bit field includes 1 bit, and the 1 bit is used to indicate that all first-type terminals on all POs associated with the PEI monitor a BWP of the paging PDCCH.
  • the partial configuration of the PO in the first BWP is the same as the partial configuration of the PO in the second BWP.
  • This partial configuration includes the proportion of the paging frame in the radio frame and the offset of the paging frame.
  • Each paging frame in the first BWP includes The number of paging occasions in the second BWP is different from the number of paging occasions included in each paging frame in the second BWP.
  • the time domain positions of its own POs calculated in the two BWPs may be different.
  • the calculation formula for the RedCap UE to determine its own PO in the two BWPs can refer to the existing protocol.
  • the number of paging occasions included in each paging frame in the first BWP is equal to 4, and the number of paging occasions included in each paging frame in the second BWP is equal to 2, for the same paging Frame, in the initial downlink BWP of RedCap, the paging frame includes sPO1, sPO2, sPO3, sPO4, in the initial downlink BWP of Legacy, the paging frame includes PO1, PO2, if UE1 calculates its own PO in the initial downlink BWP of RedCap as sPO1 , UE3 calculates its own PO in the initial downlink BWP of RedCap as sPO3, then in the initial downlink BWP of Legacy, both UE1 and UE3 calculate its own PO as PO1; if UE2 calculates its own PO in the initial downlink BWP of RedCap as sPO2 , UE4 calculates its own PO in RedCap's initial downlink BWP as sPO4, then in Legacy's initial downlink B
  • UE1 can be called the RedCap UE on sPO1 or the RedCap UE on PO1;
  • UE3 can be called the RedCap UE on sPO3 or the RedCap UE on PO1;
  • UE2 and UE4 are similar .
  • the number of paging occasions included in each paging frame in the first BWP is equal to 2
  • the number of paging occasions included in each paging frame in the second BWP is equal to 4
  • the paging frame in the initial downlink BWP of RedCap, the paging frame includes sPO1 and sPO2, in the initial downlink BWP of Legacy, the paging frame includes PO1, PO2, PO3, PO4, if UE1 calculates its own PO in the initial downlink BWP of Legacy as PO1 , UE3 calculates its own PO in the initial downlink BWP of Legacy as PO3, then in the initial downlink BWP of RedCap, UE1 and UE3 calculate its own PO as sPO1; if UE2 calculates its own PO in the initial downlink BWP of Legacy as PO2 , UE4 calculates its own PO in the Legacy initial downlink BWP as PO4, then in the RedCap initial downlink BWP, UE2 and UE4 calculate their own PO
  • UE1 can be called the RedCap UE on PO1 or the RedCap UE on sPO1;
  • UE3 can be called the RedCap UE on PO3 or the RedCap UE on sPO1;
  • UE2 and UE4 are similar .
  • the above sPO means separate PO.
  • the number of POs associated with the PEI in the first BWP is different from the number of POs associated with the PEI in the second BWP.
  • H the number of POs associated with the PEI at the first BWP
  • N the number of POs associated with the second BWP
  • the number of bits included in the first bit field is associated with the second value.
  • the number of bits included in the first bit field is associated with the first value and the second value.
  • the first bit field indicates whether the first type terminal and the second type terminal monitor the paging PDCCH.
  • PEI is used to indicate whether the second type of terminal on the PO monitors the paging PDCCH;
  • the PEI is used to indicate whether the terminal of the first type on the PO monitors the paging PDCCH.
  • the first bit field indicates whether the first-type terminal and the second-type terminal monitor the paging PDCCH, including the following possible situations.
  • the first bit field includes N bits and H bits, wherein, the N+H bits are in one-to-one correspondence with the N+H POs associated with the PEI in the two BWPs.
  • the nth bit among the N bits is used to indicate whether all the second-type terminals on the nth PO among the N POs monitor the paging PDCCH.
  • the h-th bit among the H bits is used to indicate whether all the first-type terminals on the h-th PO among the H POs monitor the paging PDCCH.
  • n is a positive integer smaller than N
  • h is a positive integer smaller than H.
  • All the second-type terminals on the nth PO among the N POs are divided into n1 subgroups, and all the first-type terminals on the h-th PO among the H POs are divided into h1 subgroups.
  • the first bit field includes n1 bits and h1 bits, where n1 bits correspond to n1 subgroups one-to-one, and h1 bits correspond to h1 subgroups one-to-one.
  • n1 bits correspond to n1 subgroups one-to-one
  • h1 bits correspond to h1 subgroups one-to-one.
  • Each bit in the n1 bits is used to indicate whether the second-type terminal in the corresponding subgroup listens to the paging message
  • each bit in the h1 bits is used to indicate the first-type terminal in the corresponding subgroup Whether to listen for paging messages.
  • the second bit field is used to indicate to the first type of terminal a BWP that monitors the paging PDCCH from the first BWP and the second BWP, including the following several possible situations, including the following several possible situations.
  • the number of bits included in the second bit field is equal to the second value.
  • the second bit field includes N bits, and the N bits are in one-to-one correspondence with the N POs associated with the PEI in the second BWP.
  • the nth bit among the N bits is used to instruct all the first-type terminals on the nth PO among the N POs to monitor a BWP of the paging PDCCH.
  • the number of bits included in the second bit field is equal to the first value.
  • the second bit field includes H bits, and the H bits are in one-to-one correspondence with the PEI associated with the H POs in the first BWP.
  • the h-th bit among the H bits is used to instruct all the first-type terminals on the h-th PO among the H POs to monitor a BWP of the paging PDCCH.
  • the number of bits included in the second bit field is equal to the smaller value between the first value and the second value.
  • the number of bits included in the second bit field is equal to min(N, H).
  • min(N, H) When the value of min(N, H) is N, the above first possible situation can be referred to; when the value of min(N, H) is H, the above second possible situation can be referred to. I won't repeat them here.
  • the number of bits included in the second bit field is equal to the larger value between the first value and the second value.
  • the number of bits included in the second bit field is equal to max(N, H).
  • max(N, H) N
  • the above first possible situation can be referred to
  • max(N, H) H
  • the above second possible situation can be referred to. I won't repeat them here.
  • the number of bits included in the second bit field is equal to the third value, and the third value is the number of PFs associated with the PEI in the second BWP. It should be understood that the number of PFs associated with the PEI in the second BWP is equal to the number of PFs associated with the PEI in the first BWP.
  • the second bit field includes W bits, and the W bits are in one-to-one correspondence with the W PFs associated with the PEI.
  • the wth bit among the W bits is used to indicate that all the terminals of the first type on all POs included in the wth PF among the W PFs monitor a BWP of the paging PDCCH.
  • the second bit field includes 1 bit, and the 1 bit is used to indicate that all first-type terminals on all POs associated with the PEI monitor a BWP of the paging PDCCH.
  • the first bit field and the second bit field may be configured by the network device or pre-defined by the protocol.
  • the configuration of the PO in the first BWP is different from the configuration of the PO in the second BWP.
  • the ratio of the paging frame in the radio frame and/or the paging frame offset are different.
  • the number of paging occasions may be the same or different.
  • a radio frame is PF at the first BWP, but not PF at the second BWP.
  • a radio frame is not PF at the first BWP, but is PF at the second BWP.
  • the PEI When the PEI is not associated with the PO in the first BWP, the PEI only indicates whether the second type of terminal monitors the paging PDCCH.
  • the PEI When the PEI is not associated with the PO in the second BWP, the PEI only indicates whether the first type of terminal monitors the paging PDCCH.
  • the first type of terminal still monitors the PEI in the second BWP, that is, the PEI resource is still located in the second BWP. If the PEI instructs the first type of terminal to monitor the paging PDCCH, the awakened first type of terminal defaults to The corresponding PO in a BWP monitors the paging PDCCH.
  • the second bit field included in the PEI is not valid, or is reserved, or is set to a specific value, or is used to indicate other functions.
  • the configuration of the PO in the first BWP and the configuration of the PO in the second BWP may be the same or different.
  • the third bit field indicates whether the first type of terminal and the second type of terminal monitor the paging PDCCH, and indicates to the first type of terminal a BWP that monitors the paging PDCCH from the first BWP and the second BWP, including the following possibilities situation. It is assumed that the PEI is associated with N POs in the second BWP, where N is a positive integer.
  • the third bit field includes 3 bits, which are denoted as bit #n1, bit #n2, and bit #n3.
  • bit #n1 indicates whether the second type terminal on the nth PO monitors the paging PDCCH.
  • Bit #n2 and bit #n3 jointly indicate whether the first type terminal on the nth PO monitors the paging PDCCH, and indicates to the first type terminal which BWP monitors the paging PDCCH from the first BWP and the second BWP.
  • n is a positive integer smaller than N.
  • the third bit field includes bit #n2, bit #n3 and P bits, where the implementation of bit #n2 and bit #n3 is still as shown in Table 2.
  • the third bit field includes 2 bits, denoted as bit #n1 and bit #n2.
  • Bit #n1 and bit #n2 jointly indicate whether the first type of terminal and the second type of terminal on the nth PO monitor the paging PDCCH, and indicate to the first type of terminal to monitor the paging PDCCH from the first BWP and the second BWP A BWP of.
  • the third bit field includes 2 bits, denoted as bit #n1 and bit #n2.
  • Bit #n1 and bit #n2 jointly indicate whether the first type of terminal and the second type of terminal on the nth PO monitor the paging PDCCH, and indicate to the first type of terminal to monitor the paging PDCCH from the first BWP and the second BWP A BWP of.
  • the third bit field also includes Y bits, and the Y bits are in one-to-one correspondence with the Y subgroups.
  • Y is a positive integer.
  • the yth bit among the Y bits is used to indicate whether the first type terminal in the yth subgroup monitors the paging PDCCH.
  • y is a positive integer less than or equal to Y.
  • bit #n1 and bit #n2 When the bit status of bit #n1 and bit #n2 is "10", the yth bit among the Y bits is used to indicate whether the second type terminal in the yth subgroup monitors the paging PDCCH.
  • bit status of bit #n1 and bit #n2 is "11"
  • the yth bit among the Y bits is used to indicate whether the first-type terminal and the second-type terminal in the yth subgroup monitor the paging PDCCH.
  • the bit state "11" may also implicitly indicate that the second type of terminal on the nth PO monitors the paging PDCCH at the second BWP, the nth PO Terminals of the first type on a PO monitor the paging PDCCH on the first BWP.
  • the bit state "11" may also implicitly indicate that both the second type terminal and the first type terminal on the nth PO are on the second The BWP monitors the paging PDCCH.
  • the first-type terminals on the nth PO are divided into Q subgroups, and the second-type terminals on the nth PO are divided into T subgroups.
  • the third bit field further includes Q+T bits, and the Q+T bits are in one-to-one correspondence with the Q+T subgroups.
  • Q, T are positive integers.
  • bit #n1 and bit #n2 When the bit status of bit #n1 and bit #n2 is "01", the qth bit among the Q bits is used to indicate whether the first type of terminal in the qth subgroup of the Q subgroups monitors the paging PDCCH .
  • q is a positive integer less than or equal to Q.
  • the t-th bit among the T bits is used to indicate whether the second-type terminal in the t-th subgroup of the T subgroups monitors the paging PDCCH .
  • t is a positive integer less than or equal to T.
  • bit #n1 and bit #n2 When the bit status of bit #n1 and bit #n2 is "11", the qth bit among the Q bits is used to indicate whether the first type of terminal in the qth subgroup of the Q subgroups monitors the paging PDCCH , the t-th bit among the T bits is used to indicate whether the second-type terminal in the t-th subgroup of the T subgroups monitors the paging PDCCH.
  • the bit state "11" can also implicitly indicate the nth
  • the second type of terminal on the PO monitors the paging PDCCH at the second BWP
  • the first type of terminal on the nth PO monitors the paging PDCCH at the first BWP.
  • the bit state "11" may also implicitly indicate that the second Both the second-type terminals and the first-type terminals on the n POs monitor the paging PDCCH at the second BWP.
  • the first type of terminal may determine the relationship between the number of subgroups instructed to monitor the paging PDCCH and the first threshold.
  • the first threshold may be pre-configured in the first type of terminal, or the first threshold may be pre-defined by a protocol.
  • the PEI may be carried by the PDCCH.
  • the PEI may also be carried by a reference signal sequence, for example, different reference signal sequences indicate different indication states.
  • a secondary synchronization signal (secondary synchronization signal, SSS) sequence may carry PEI information.
  • the PEI can instruct some first-type terminals to monitor the paging PDCCH at the second BWP, and at the same time instruct another part of the first-type terminals to The paging PDCCH is monitored, so as to achieve load balancing, as many first-type terminals as possible monitor the paging PDCCH at the second BWP, thereby reducing the number of RF handovers performed by the UE to save UE power consumption.
  • the bandwidth supported by the RedCap UE is small, and a part of the BWP (frequency range) configured for the RedCap UE may not include the CD-SSB (denoted as the first SSB).
  • the RedCap initial downlink BWP configured for the RedCap UE may not include the CD-SSB.
  • RedCap UE may still need to receive SSB for time-frequency tracking, beam management, RRM measurement, RLM measurement, and/or CSI measurement when the BWP is the active BWP.
  • RedCap UE needs to perform RF switching when receiving SSB. During RF switching, UE cannot transmit data on the activated BWP, which will cause data interruption. In addition, frequent RF switching of UE will also increase UE power consumption.
  • RedCap UE is configured with other SSBs except CD-SSB, for example, RedCap UE is configured with SSB for measurement in the RedCap initial downlink BWP.
  • the present application proposes a method 500 .
  • FIG. 5 is a schematic diagram of a communication method 500 provided by an embodiment of the present application.
  • the second SSB will be described below with reference to FIG. 5 .
  • the method 500 includes the following steps:
  • the network device sends a first synchronization signal block (SS/PBCH block, SSB) to the first terminal, the first SSB includes a physical broadcast channel (physical broadcast channel, PBCH), and the PBCH is used to carry a master information block (master information block, MIB) information.
  • the first terminal receives the first SSB.
  • the first SSB is used to determine the first cell to which the first terminal is connected.
  • the first SSB is a CD-SSB.
  • the first terminal determines to connect to the first cell according to the first SSB.
  • the first cell is a cell under the network device.
  • the network device sends configuration information of the second SSB to the first terminal in the first cell.
  • the first terminal receives configuration information of the second SSB.
  • the first terminal may also receive configuration information of the second SSB from the network device in the second cell. For example, after the first terminal connects to the first cell, the network device configures the second cell for the first terminal, and the second cell does not include the first SSB.
  • the second SSB also belongs to the first cell.
  • the second SSB belongs to the second cell.
  • the network device sends the second SSB to the first terminal according to the configuration information of the second SSB.
  • the second SSB does not include the PBCH, and the second SSB includes at least one secondary synchronization signal (secondary synchronization signal, SSS).
  • the second SSB is located in the first BWP.
  • the first BWP is the initial downlink BWP of RedCap.
  • the frequency of the first SSB is different from the frequency of the second SSB, the second SSB has a second period, the first SSB has a first period, and the second period is less than or equal to the first period.
  • the frequency of the second SSB is not located on a synchronization raster (sync raster).
  • sync raster synchronization raster
  • the frequency of the first SSB is on the synchronization grid.
  • the second SSB may also be called an additional synchronization signal block (additional SS/PBCH block, add-SSB), SSB not including PBCH (SSB without PBCH), redcap synchronization signal (redcap synchronization signal, RSS), or redcap Reference signal (redcap reference signal, RRS).
  • additional synchronization signal block additional SS/PBCH block, add-SSB
  • SSB not including PBCH SSB without PBCH
  • redcap synchronization signal redcap synchronization signal
  • RSS redcap synchronization signal
  • RRS redcap Reference signal
  • the first terminal performs measurement according to the second SSB.
  • the measurements performed by the first terminal according to the second SSB include but are not limited to one or more of the following:
  • Time-frequency tracking also called time-frequency synchronization
  • time/frequency tracking time/frequency tracking
  • automatic gain control adjustment automatic gain control, AGC
  • beam management such as beam selection (beam selection)
  • wireless resource management radio resource management, RRM
  • radio link monitoring radio link monitoring, RLM
  • channel state information channel state information, CSI
  • the second SSB may be configured for the first terminal in the first BWP, so that the first terminal can perform measurement.
  • the PBCH may not be included in the second SSB, thereby reducing power consumption of network equipment and saving resource overhead.
  • the time-frequency structure, frequency domain location, time domain location, and quasi co-location (quasi co-location, QCL) relationship of the second SSB will be described in detail below.
  • the time-frequency structure of the second SSB is introduced.
  • the time-frequency format of the first SSB is shown in FIG. 6 .
  • the first SSB includes a primary synchronization signal (primary synchronization signal, PSS), SSS, and PBCH.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH primary synchronization signal
  • the time-frequency format of the second SSB is designed according to the time-frequency format of the first SSB.
  • the second SSB includes 1 SSS, and 1 SSS occupies a third orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol.
  • OFDM orthogonal frequency division multiplexing
  • the time-frequency structure of the second SSB may also include the following situations.
  • the second SSB also includes 1 PSS, and 1 PSS occupies the first OFDM symbol, and the first OFDM symbol is located before the third OFDM symbol, and between the first OFDM symbol and the third OFDM symbol Only the second OFDM symbol is spaced between them.
  • the second SSB further includes 1 SSS, and the further included 1 SSS occupies the first OFDM symbol.
  • the second SSB also includes 1 PSS, 2 SSSs, 1 PSS occupies the first OFDM symbol, and the 2 SSSs occupy the second OFDM symbol and the fourth OFDM symbol respectively.
  • the four OFDM symbol is the first OFDM symbol after the third OFDM symbol.
  • the second SSB further includes 3 SSSs, and the 3 SSSs respectively occupy the first OFDM symbol, the second OFDM symbol, and the fourth OFDM symbol.
  • the second SSB also includes 1 PSS and 1 SSS, and 1 PSS occupies the first OFDM symbol, and the 1 SSS that also includes occupies the fourth OFDM symbol or the first OFDM symbol. Two OFDM symbols.
  • the second SSB also includes 2 SSSs, and the 2 SSSs occupy the second OFDM symbol and the fourth OFDM symbol respectively, or, the 2 SSSs occupy the The first OFDM symbol and the fourth OFDM symbol, or, the two SSSs occupy the first OFDM symbol and the second OFDM symbol respectively.
  • the second SSB also includes 1 PSS and a demodulation reference signal (demodulation reference signal, DMRS), 1 PSS occupies the first OFDM symbol, and the DMRS is allowed to occupy the second OFDM symbol, the third OFDM symbol, and the fourth OFDM symbol.
  • DMRS demodulation reference signal
  • the 1 PSS and the 1 SSS occupy 127 resource elements (resource element, RE) respectively, and the frequency domain ranges occupied by the 1 PSS and the 1 SSS are the same.
  • the DMRS allows to occupy 60 REs on the second OFDM symbol, allows to occupy 24 REs on the third OFDM symbol, and allows to occupy 60 REs on the fourth OFDM symbol.
  • the i-th RE among the 60 REs on the second OFDM symbol has the same frequency as the i-th RE among the 60 REs on the fourth OFDM symbol, and the 60 REs on the second OFDM symbol or the fourth OFDM symbol
  • the j+1th RE in is offset by 4 REs relative to the jth RE
  • i is a positive integer less than or equal to 60
  • j is a positive integer less than or equal to 59.
  • the number of the first RE is a+4 and the number of the second RE is a, it is said that the first RE is offset by 4 REs relative to the second RE.
  • the frequency of the k-th RE among the 24 REs on the third OFDM symbol is the same as the frequency of the k-th RE among the 60 REs on the second OFDM symbol, and k is a positive integer less than or equal to 12.
  • the frequency of the mth RE among the 24 REs on the third OFDM symbol is the same as the frequency of the m+36th RE among the 60 REs on the second OFDM symbol, and m is greater than or equal to 13 and less than or equal to 24 positive integer.
  • the PSS or SSS on the OFDM symbol of the second SSB occupies the same frequency domain range.
  • the second SSB is relative to the first SSB, and the second SSB only includes PSS, SSS and PBCH DMRS, but does not include PBCH valid data.
  • the first terminal can perform measurements according to PSS, SSS and PBCH DMRS.
  • REs in the second SSB originally used to send PBCH valid data can be used to transmit other downlink data.
  • the frequency position of the PBCH DMRS in the second SSB is determined according to the frequency position of the PBCH DMRS in the first SSB.
  • the frequency position of the PBCH DMRS in the second SSB relative to the SSS is the same as the frequency position of the PBCH DMRS in the first SSB relative to the SSS.
  • Table 5 Number of REs occupied by PSS, SSS, PBCH, PBCH DMRS included in the first SSB among the 240 REs included in the first SSB
  • the second SSB further includes 1 SSS, and the further included 1 SSS occupies the second OFDM symbol or the fourth OFDM symbol.
  • the frequency domain ranges occupied by the PSS or the SSS on the OFDM symbols of the second SSB are different.
  • the frequency domain range occupied by the PSS on the first OFDM symbol is the same as the frequency domain range occupied by the SSS on the third OFDM symbol.
  • the frequency domain range occupied by the SSS on the second OFDM symbol is the same as the frequency domain range occupied by the SSS on the fourth OFDM symbol.
  • the frequency domain range occupied by the SSS on the second OFDM symbol is different from the frequency domain range occupied by the SSS on the third OFDM symbol.
  • different indication information may be indicated according to different frequency domain ranges occupied by the PSS or SSS.
  • the specific time-frequency format of the second SSB can be configured by a network device, for example, configured by SIB1, or predefined by a protocol.
  • time-frequency format of the second SSB since the time-frequency format of the second SSB is different from that of the first SSB, a part of time-frequency resources can be saved, and the saved time-frequency resources can be used to send downlink data.
  • the method 500 also includes:
  • the network device sends downlink data using the saved time-frequency resources.
  • the first terminal receives downlink data.
  • the downlink data includes at least one of the following: physical downlink shared channel PDSCH, physical downlink control channel PDCCH, downlink reference signal, and the downlink reference signal includes at least one of the following: channel state information reference signal CSI-RS, tracking reference signal TRS, positioning reference Signal PRS etc.
  • the network device may use the saved time-frequency resources to send downlink data in the following possible ways.
  • the network device sends downlink data in a physical resource block (physical resource block, PRB) that does not transmit the second SSB. That is, time-frequency resources that can transmit downlink data are determined at the granularity of PRB.
  • PRB physical resource block
  • the PRBs including the second SSB are not used for downlink data transmission, and the PRBs not including the second SSB in the first resource can be used for downlink data transmission.
  • frequency domain resources adjacent to frequency domain resources occupied by the SSS are not used for sending downlink data.
  • the frequency domain resources occupied by the SSS are the frequency domain resources included from frequency #A to frequency #B, where frequency #A is the maximum frequency occupied by the SSS, and frequency #B is the minimum frequency occupied by the SSS.
  • the frequency domain resources adjacent to the frequency domain resources occupied by the SSS include: 9 adjacent REs that are larger than frequency #A and adjacent to frequency #A, and 9 adjacent REs that are smaller than frequency #B and adjacent to frequency #B 8 adjacent REs.
  • the frequency domain resources occupied by the SSS are REs numbered 56 to 182
  • the frequency domain resources adjacent to the frequency domain resources occupied by the SSS include: REs numbered 183 to 191 and REs numbered 48 to 55. It should be understood that during calculation at this time, the numbers of REs on one OFDM symbol are continuous.
  • the network device sends downlink data on REs that do not transmit the second SSB.
  • time-frequency resources that can send downlink data are determined at the granularity of REs.
  • the first resource carrying downlink data overlaps with the second SSB, REs including the second SSB are not used for downlink data transmission, and REs not including the second SSB in the first resource can be used for downlink data transmission.
  • the frequency domain resources adjacent to the frequency domain resources occupied by the SSS are not used to transmit downlink data.
  • the network device sends downlink data on PRBs or REs that do not transmit the PSS and/or SSS, and on REs that do not transmit the DMRS.
  • the PRBs or REs including the PSS and/or SSS of the second SSB are not used for downlink data transmission, and the REs including the DMRS of the second SSB are not used for For downlink data transmission, other resources in the first resource can be used for downlink data transmission.
  • the frequency domain resources adjacent to the frequency domain resources occupied by the SSS are not used to transmit downlink data.
  • the first resource is not used for downlink data transmission, other reasons may also cause other resources in the first resource not to be used for downlink data transmission, for example, semi-static configuration or dynamic instruction of the network device Rate matching resources are not used for downlink data transmission.
  • the second SSB may include consecutive OFDM symbols, or may include discontinuous OFDM symbols. As shown in (2) in FIG. 7 , the second SSB actually only includes the first OFDM symbol and the third OFDM symbol, and the second OFDM symbol is not used to transmit the second SSB. According to the solution of the present application, the network device can send downlink data in the saved time-frequency resource, thereby improving the utilization rate of the time-frequency resource.
  • the first RE occupied by the SSS on the third OFDM symbol of the first SSB is offset by 56 REs relative to the first RE occupied by the PBCH on the second OFDM symbol. That is, if the number of the first RE occupied by the PBCH is k, the number of the first RE occupied by the SSS is k+56. That is to say, the first SSB occupies a total of 240 REs in the frequency domain, corresponding to 20 resource blocks (resource blocks, RBs).
  • the first SSB can determine the frequency of the PSS or SSS of the first SSB according to the first frequency occupied by the PBCH, where the first frequency is the minimum frequency occupied by the PBCH.
  • the network device may indicate a frequency and then determine the frequency domain position of the second SSB according to the frequency.
  • the network device indicates the first frequency, and the frequency domain offset between the first frequency and the second SSB in the frequency domain is X, and the frequency domain position of the second SSB can be determined according to the first frequency and the frequency domain offset X.
  • the following methods are included.
  • the network device configures frequency #A to the first terminal.
  • the frequency #A can be regarded as the minimum frequency occupied by the PBCH included in a virtual SSB, for example, it can be the start frequency of the PBCH or the center frequency of the first RE included in the PBCH.
  • the first terminal determines the frequency domain position of the second SSB according to the frequency #A.
  • the first terminal may determine the start frequency of the SSS on the third OFDM symbol included in the second SSB according to the frequency #A, and then determine the frequency domain position of the second SSB.
  • Example 1 the start frequency of the SSS on the third OFDM symbol included in the second SSB is greater than frequency #A, and the start frequency of the SSS on the third OFDM symbol is offset by 56 REs relative to frequency #A, or the third OFDM
  • the center frequency of the first RE of the SSS on a symbol is offset by 56 REs relative to frequency #A.
  • the network device configures frequency #B to the first terminal.
  • the frequency #B can be regarded as a center frequency of a virtual SSB.
  • frequency #B corresponds to the center frequency of the 121st RE among the 240 REs included in a virtual SSB.
  • the first terminal determines frequency #A according to frequency #B. Furthermore, the first terminal determines the frequency domain position of the second SSB according to the frequency #A.
  • the first terminal directly determines the frequency domain position of the second SSB according to the frequency #B.
  • Example 1 the start frequency of the SSS on the third OFDM symbol included in the second SSB is smaller than frequency #B, and the center frequency of the first RE of the SSS on the third OFDM symbol is offset by 64 REs relative to frequency #B.
  • the network device configures a frequency offset between frequency #A and a specific resource to the first terminal.
  • the first terminal determines the frequency #A according to the frequency offset between the frequency #A and the specific resource. Furthermore, the first terminal determines the frequency domain position of the second SSB according to the frequency #A.
  • the specific resource may be the first BWP configured for the first terminal or a control resource set (control-resource set, CORESET) configured for the first terminal.
  • the network device configures a frequency #C to the first terminal, and the frequency #C corresponds to the starting frequency of the SSS on the third OFDM symbol included in the second SSB, or, the frequency #C corresponds to the SSS on the third OFDM symbol included in the second SSB The center frequency of the first RE.
  • the time domain position of the second SSB is introduced.
  • the time domain position includes time domain pattern, period and so on.
  • a half-frame may include one or more second SSBs, and a set of multiple second SSBs within a half-frame may be called an add-SSB burst set, or have other names, which shall not be limit.
  • the time domain pattern of the add-SSB burst set in the half frame is the same as that of the CD-SSB burst set (SS burst set) used by the first terminal in the initial access in the half frame. Same style.
  • a CD-SSB burst set includes Lmax candidate SSB resources, and the time-domain positions (or time-domain patterns) of the candidate SSB resources included in the CD-SSB burst set in a half-frame include multiple implementations, specifically Reference may be made to the description in section 4.1 of 38.213 of the 3GPP protocol.
  • an add-SSB burst set also includes Lmax candidate add-SSB resources.
  • the nth candidate add-SSB resource of the add-SSB burst set in the half frame and the nth candidate SSB resource of the CD-SSB burst set in the half frame may be referred to as one-to-one corresponding resources, or Associated resources.
  • the network device sends CD-SSB on the nth candidate SSB resource in the half frame of the CD-SSB burst set, the nth candidate add-SSB associated with it in the half frame of the add-SSB burst set A second SSB (add-SSB) is also sent on the resource. If the network device does not transmit CD-SSB on the nth candidate SSB resource in the half frame of the CD-SSB burst set, the nth candidate add-SSB associated with it in the half frame of the add-SSB burst set The second SSB is also not sent on the resource.
  • the network device may send indication information #C to the first terminal, where the indication information #C indicates the time-domain pattern of the add-SSB burst set in the half-frame.
  • the indication information #C indicates the time-domain pattern of the add-SSB burst set in the half-frame.
  • the nth candidate SSB resource in the CD-SSB burst set is located in the yth to y+3 OFDM symbols in the xth time slot in the half frame, then the corresponding The nth candidate add-SSB resource in the transmission set is also located in the xth time slot in the half frame.
  • the nth candidate add-SSB resource For the OFDM symbol occupied by the nth candidate add-SSB resource, if the nth candidate add-SSB resource includes , the first OFDM symbol is located at the y-th OFDM symbol of the x-th slot, and if the n-th candidate add-SSB resource includes the second OFDM symbol as described above, the second OFDM symbol is located at the th The y+1th OFDM symbol of the xth slot, if the nth candidate add-SSB resource includes the third OFDM symbol as described above, the third OFDM symbol is located in the y+2th OFDM symbol of the xth slot symbol, if the nth candidate add-SSB resource includes the fourth OFDM symbol as described above, the fourth OFDM symbol is located in the y+3th OFDM symbol of the xth time slot.
  • the network device sends indication information #D to the first terminal, where the indication information #D indicates the period of the add-SSB burst set.
  • the indication information #D may be carried in the SIB1 information.
  • it is specified in the protocol that the period of the add-SSB burst set is the same as that of the CD-SSB burst set.
  • the network device does not send the indication information #D, it specifies that the period of the add-SSB burst set is the same as the period of the CD-SSB burst set.
  • period of the add-SSB burst set can also be understood as the period of the half frame including the add-SSB, and the period of the add-SSB burst set can also be called the period of the add-SSB.
  • the network device sends indication information #E to the first terminal, where the indication information #E indicates the period offset of the add-SSB burst set.
  • the first terminal may determine the system frame number (system frame number, SFN) and half frame number including the add-SSB burst set according to the indication information #E.
  • the temporal pattern of the set of add-SSB bursts in a field is the same as the temporal pattern of a set of CD-SSB bursts in a field.
  • the first SSB is located in the first field and the second SSB is located in the second field.
  • the number of first SSBs included in the first field and the number of second SSBs included in the second field are both Q, where Q is a positive integer. It may be stipulated in the agreement that the qth first SSB included in the first half-frame and the qth second SSB included in the second half-frame have a quasi-co-location QCL relationship, and the QCL relationship includes at least one of the following: quasi-co-location type A QCL-TypeA, quasi-co-location type D QCL-TypeD, q is a positive integer less than or equal to Q.
  • the QCL relationship also includes at least one of the following: quasi-co-location type B QCL-TypeB, quasi-co-location type C QCL-TypeC.
  • the qth first SSB can be used as the QCL source reference signal (QCL resource reference signal) of the qth second SSB.
  • the QCL type between the antenna port (antenna port) of the qth first SSB and the antenna port of the qth second SSB can be QCL-TypeA, QCL-TypeB, QCL-TypeC or QCL-TypeD one or more.
  • the large-scale channel fading parameter calculated from one port can infer the large-scale channel fading parameter of the other port.
  • Large-scale channel fading parameters include at least one of the following parameters:
  • Delay spread, doppler spread, doppler shift, average gain, average delay or spatial Rx parameters are .
  • reference signal sequences such as PSS, SSS or PBCH DMRS included in the same add-SSB are all QCL. It can also be considered that the beam directions of reference signal sequences such as PSS, SSS or PBCH DMRS included in an add-SSB are the same.
  • the second SSB indicates different indication information through different reference signal sequences, for example, the second SSB carries the PEI as described above.
  • FIG. 8 is a communication device (such as a network device, or a first terminal) provided by an embodiment of the present application.
  • the communication device may include a transceiver unit 801 and a processing unit 802 .
  • the transceiver unit 801 may be used to implement a corresponding communication function.
  • the transceiver unit 801 may also be called a communication interface or a communication unit.
  • the processing unit 802 may be configured to perform processing operations.
  • the communication device further includes a storage unit, which can be used to store instructions and/or data, and the processing unit 802 can read the instructions and/or data in the storage unit, so as to implement the above-mentioned method embodiments. Actions performed by the network device, or actions performed by the first terminal in the foregoing method embodiments.
  • the communication device may be the network device in the foregoing embodiments, or may be a component (such as a chip) of the network device.
  • the communication device may implement the steps or processes corresponding to the execution of the network device in the above method embodiments.
  • the transceiver unit 801 is configured to send the first configuration information, and is also used to send the second DCI in the paging search space set configured in the second BWP, and is also used to send the second DCI in the first BWP Send the first DCI in the configured paging search space set.
  • the processing unit 802 may be configured to generate the first configuration information, generate the second DCI, and generate the first DCI.
  • the transceiving unit 801 is configured to send the first configuration information, and is also configured to send short message type information when the first terminal performs RA in the RA search space set.
  • the processing unit 802 may be configured to generate first configuration information.
  • the transceiving unit 801 is configured to send the first configuration information, and is also configured to send the first indication information.
  • the processing unit 802 may be configured to generate first configuration information, and generate first indication information.
  • the transceiver unit 801 is configured to send the first SSB, is further configured to send configuration information of the second SSB in the first cell, and is further configured to send the second SSB according to the configuration information of the second SSB.
  • the processing unit 802 may be configured to generate the first SSB and generate the second SSB.
  • the communication device may be the first terminal in the foregoing embodiments, or may be a component (such as a chip) of the first terminal.
  • the communication device may implement the steps or processes corresponding to the steps or processes performed by the first terminal in the above method embodiments.
  • the transceiving unit 801 is configured to receive the first configuration information, to receive the second DCI in the paging search space set configured in the second BWP, and to receive the second DCI in the first BWP
  • the configured paging search space set receives the first DCI.
  • the processing unit 802 may be configured to decode the second DCI, and obtain short message information from the second DCI, and may also be configured to decode the first DCI, and obtain short message information from the first DCI.
  • the transceiving unit 801 is configured to receive first configuration information, and is also configured to receive short message information during the first terminal performing RA in the RA search space set.
  • the transceiving unit 801 is configured to receive first configuration information, and is also configured to receive first indication information.
  • the processing unit 802 may be configured to decode the first indication information, and determine which BWP monitors the paging PDCCH.
  • the transceiving unit 801 is configured to receive the first SSB, and is further configured to receive configuration information of the second SSB in the first cell, and is further configured to receive the second SSB.
  • the processing unit 802 may be configured to determine to connect to the first cell according to the first SSB, and may also be configured to perform measurement according to the second SSB.
  • the multi-link device here is embodied in the form of functional units.
  • the term "unit” here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • ASIC application specific integrated circuit
  • processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality.
  • the multi-link device may specifically be the first MLD in the foregoing embodiments, and may be used to execute each process corresponding to the first MLD in the foregoing method embodiments and/or or steps, or, the multi-link device may specifically be the second MLD in the above embodiments, and may be used to execute the various processes and/or steps corresponding to the second MLD in the above method embodiments. To avoid repetition, here No longer.
  • the multi-link device in each solution above has the function of implementing the corresponding steps performed by the multi-link device (such as the first MLD or the second MLD) in the above method.
  • the functions described above may be implemented by hardware, or may be implemented by executing corresponding software on the hardware.
  • the hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver computer), and other units, such as a processing unit, may be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.
  • transceiver unit 801 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.
  • the multi-link device in FIG. 8 may be the first MLD or the second MLD in the foregoing embodiments, or may be a chip or a chip system, for example, a system on chip (system on chip, SoC).
  • the transceiver unit may be an input-output circuit or a communication interface;
  • the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. It is not limited here.
  • the embodiment of the present application also provides a communication device, as shown in FIG. 9 , including: a processor 901 .
  • the processor 901 is configured to execute computer programs or instructions stored in the memory 903, or read data stored in the memory 903, so as to execute the methods in the above method embodiments.
  • the communication device also includes a communication interface 902, and the communication interface 902 is used for receiving and/or sending signals.
  • the processor 901 is configured to control the communication interface 902 to receive and/or send signals.
  • the communication device further includes a memory 903, and the memory 903 is used to store computer programs or instructions and/or data.
  • the memory 903 can be integrated with the processor 901, or can also be set separately.
  • the processor 901, the communication interface 902, and the memory 903 are connected to each other through a bus 904;
  • the bus 904 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA ) bus, etc.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the above-mentioned bus 904 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 used in FIG. 9 , but it does not mean that there is only one bus or one type of bus.
  • the communication device is configured to implement the operations performed by the network device or the first terminal in the above method embodiments.
  • the processor 901 can be used to generate the first configuration information, generate the second DCI, and generate the first DCI; the communication interface 902 is used to send the first configuration information, and is also used for The paging search space set configured in the BWP sends the second DCI, and is also used to send the first DCI in the paging search space set configured in the first BWP.
  • the communication interface 902 is used to receive the first configuration information, and is also used to receive the second DCI in the paging search space set configured in the second BWP, and is also used to receive the second DCI in the second BWP.
  • a paging search space set configured in a BWP receives the first DCI; the processor 901 can be used to decode the second DCI, obtain short message information from the second DCI, and can also be used to decode the first DCI, Obtain short message information from the first DCI.
  • the processor (such as the processor 901) mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP.
  • the processor may further include hardware chips.
  • the aforementioned hardware chip may be an application-specific integrated circuit (application-specific integrated circuit, ASIC), a programmable logic device (programmable logic device, PLD) or a combination thereof.
  • the aforementioned PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), a general array logic (generic array logic, GAL) or any combination thereof.
  • the memory (such as the memory 903 ) mentioned in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (RAM), which acts as external cache memory.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • 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 functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the 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 are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) 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. .

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Abstract

Des modes de réalisation de la présente invention concernent un procédé et un appareil de communication. Le procédé comprend les étapes suivantes : un premier terminal reçoit des premières informations de configuration en provenance d'un dispositif de réseau, les premières informations de configuration étant utilisées pour configurer des ensembles d'espaces de recherche de radiomessagerie dans une première partie de bande passante (BWP) et une seconde BWP ; lorsque la première BWP représente une BWP active, le premier terminal reçoit des premières informations de commande de liaison descendante (DCI) dans l'ensemble d'espaces de recherche de radiomessagerie configuré dans la première BWP, les premières DCI comprenant des informations de message court, et les premières DCI n'étant pas utilisées pour planifier un canal partagé de liaison descendante physique (PDSCH) de radiomessagerie ; lorsque la seconde BWP représente une BWP active, le premier terminal reçoit des secondes DCI dans l'ensemble d'espaces de recherche de radiomessagerie configuré dans la seconde BWP, les secondes DCI comprenant des informations de message court, et les secondes DCI étant capables de planifier le PDSCH de radiomessagerie. Au moyen de la solution de la présente invention, la consommation d'énergie et le retard d'accès du premier terminal peuvent être réduits.
PCT/CN2022/121259 2021-09-28 2022-09-26 Procédé et appareil de communication WO2023051442A1 (fr)

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Citations (4)

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Publication number Priority date Publication date Assignee Title
CN110839291A (zh) * 2018-08-19 2020-02-25 华为技术有限公司 传输下行控制信息的方法和装置
CN111699731A (zh) * 2018-01-12 2020-09-22 联想（新加坡）私人有限公司 接收寻呼消息
CN112771911A (zh) * 2018-04-12 2021-05-07 鸿颖创新有限公司 用于系统信息修改和获取过程的方法及装置
WO2021104520A1 (fr) * 2019-11-29 2021-06-03 FG Innovation Company Limited Procédé de surveillance d'occasions de radiomessagerie, et dispositif associé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111699731A (zh) * 2018-01-12 2020-09-22 联想（新加坡）私人有限公司 接收寻呼消息
CN112771911A (zh) * 2018-04-12 2021-05-07 鸿颖创新有限公司 用于系统信息修改和获取过程的方法及装置
CN110839291A (zh) * 2018-08-19 2020-02-25 华为技术有限公司 传输下行控制信息的方法和装置
WO2021104520A1 (fr) * 2019-11-29 2021-06-03 FG Innovation Company Limited Procédé de surveillance d'occasions de radiomessagerie, et dispositif associé

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