RU2819861C1 - Method and apparatus for indicating a beam and a communication device - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: method of indicating a beam includes receiving (101, 202), using a first receiving beam, first indication information transmitted by a network device, wherein the first indication information indicates a second receiving beam; wherein the first receiving beam corresponds to the first transmitter receiver point (TRP) or the second TRP, and the second receiving beam corresponds to the second TRP, wherein the second receiving beam is configured for at least two physical downlink control channel (PDCCH) transmissions, a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH) and a physical uplink control channel (PUCCH).

EFFECT: providing indication of receiving beam of indication information during communication and increasing probability of successful reception of signalling.

22 cl, 8 dwg

Description

TECHNICAL FIELD

[0001] The present invention relates to the field of wireless communication technology and, in particular, to a beam indicating method, a beam indicating device and a communication device.

PREREQUISITES FOR CREATION OF THE INVENTION

[0002] In a new radio technology (NR, New Radio), especially if the communication frequency band is in the FR (Frequency Range), due to the rapid attenuation of high-frequency channels, beam-based transmission and reception are required to ensure proper coverage.

[0003] In the Rel-16 version, dedicated beams of the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel), Physical Uplink Shared Channel (PUSCH) , Physical Uplink Shared Channel) and Physical Uplink Control Channel (PUCCH), as well as each uplink and downlink reference signal are specified independently, resulting in a significant amount of signaling overhead. Thus, to reduce signaling overhead, a common beam can be used, that is, a common beam is used to indicate multiple channels and/or reference signals. For example, a common beam may be shared by at least two channels or at least two reference signals.

[0004] However, a problem that needs to be solved is how to specify transmitting or receiving beams in the communication process.

SUMMARY OF THE INVENTION

[0005] As part of the disclosure of the present invention, a beam indicating method, a beam indicating apparatus, and a communication device are provided to solve the technical problem associated with the inability to indicate a receiving beam of indication information transmitted by a Medium Access Control (MAC) layer or using downlink control information (DCI, Downlink Control Information).

[0006] According to a first aspect of embodiments of the present invention, a beam indicating method applicable to a terminal is provided. The method includes:

[0007] receiving, using the first reception beam, first indication information transmitted by the network device, the first indication information configured to indicate the second reception beam;

[0008] wherein the first receiving beam corresponds to the first Transmission and Reception Point (TRP) or the second TRP, and the second receiving beam corresponds to the second TRP.

[0009] Additionally, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[0010] Additionally, the first indication information is a first MAC control element (MAC CE, MAC Control Element);

[0011] wherein the first MAC CE is configured to indicate an identifier (ID, Identification) of the first control resource set (CORESET, Control Resource Set) associated with the second TRP, and a state index of the transmission configuration indicator (TCI, Transmission Configuration Indicator) corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[0012] Additionally, the first indication information is the second MAC CE and the first downlink control information (DCI);

[0013] wherein the second MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[0014] the first DCI is configured to indicate a TCL state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[0015] Additionally, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the updated beam of the second TRP.

[0016] Additionally, the first indication information is a third MAC CE;

[0017] wherein the third MAC CE is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[0018] Additionally, the first indication information is a fourth MAC CE and a second DCI;

[0019] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[0020] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[0021] Additionally, the set of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[0022] Additionally, the first DCI and the second DCI contain an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[0023] Additionally, in the first DCI and in the second DCI, each TCI state index corresponds to a predetermined TRP ID and/or CORESET pool index.

[0024] Additionally, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[0025] Additionally, the method also includes:

[0026] determining the first receiving beam;

[0027] wherein the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP.

[0028] Additionally, the method also includes:

[0029] receiving second indication information using a known reception beam corresponding to the first TRP, wherein the second indication information is configured to determine the first reception beam.

[0030] Additionally, a known receive beam corresponds to CORESET CORESET#0 associated with the first TRP; or

[0031] the known receive beam corresponds to the third CORESET associated with the first TRP, and is indicated by the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP.

[0032] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0033] one or more TCI state indices corresponding to the TRP ID; or

[0034] one or more TCI state indexes corresponding to the CORESET pool index.

[0035] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0036] a plurality of TCI state indices corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[0037] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[0038] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0039] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether there is at least one TCI status index in the at least one MAC CE.

[0040] According to a second aspect of embodiments of the present invention, a beam indicating method applicable to a network device is provided. The method includes:

[0041] transmitting first indication information to the terminal using the first transmission beam; wherein

[0042] the first indication information is configured to indicate a second reception beam of the terminal, and the first transmit beam corresponds to the first reception beam of the terminal; And

[0043] the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[0044] Additionally, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[0045] Additionally, the first indication information is a first MAC CE;

[0046] wherein the first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[0047] Additionally, the first indication information is a second MAC CE and a first DCI;

[0048] wherein the second MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[0049] The first DCI is configured to indicate a TCL state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second CE MAC.

[0050] Additionally, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the updated beam of the second TRP.

[0051] Additionally, the first indication information is a third MAC CE;

[0052] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI status index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[0053] Additionally, the first indication information is a fourth MAC CE and a second DCI;

[0054] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[0055] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[0056] Additionally, the plurality of TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[0057] Additionally, the first DCI and the second DCI contain an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[0058] Additionally, in the first DCI and in the second DCI, each TCI state index corresponds to a predetermined TRP ID and/or CORESET pool index.

[0059] Additionally, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[0060] Additionally, the first receive beam is the initial receive beam corresponding to CORESET CORESET#0 associated with the first TRP.

[0061] Additionally, the method also includes:

[0062] transmitting second indication information to the terminal using a transmit beam corresponding to a known reception beam of the terminal;

[0063] wherein the second indication information is configured to indicate a first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[0064] Additionally, a known receive beam corresponds to CORESET CORESET#0 associated with the first TRP; or the known receive beam corresponds to the third CORESET associated with the first TRP and is indicated by the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP.

[0065] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0066] one or more TCI state indices corresponding to the TRP ID; or [0067] one or more TCI state indexes corresponding to the CORESET pool index.

[0068] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0069] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[0070] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[0071] Additionally, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[0072] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[0073] According to a third aspect of embodiments of the present invention, a beam indicating apparatus applicable to a terminal is provided. The device contains:

[0074] a receiving module configured to receive first indication information transmitted by a network device using a first reception beam, the first indication information configured to indicate a second reception beam;

[0075] wherein the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[0076] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[0077] As a possible implementation, the first indication information is a first MAC CE;

[0078] wherein the first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[0079] As a possible implementation, the first indication information is a second MAC CE and a first DCI;

[0080] wherein the second CE MAC is configured to indicate a plurality of activated TCI state indexes; And

[0081] The first DCI is configured to indicate a TCL state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second CE MAC.

[0082] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or

[0083] the first reception beam corresponds to the second TRP, and the second reception beam corresponds to the updated beam of the second TRP.

[0084] As a possible implementation, the first indication information is a third MAC CE;

[0085] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[0086] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[0087] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[0088] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[0089] As a possible implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[0090] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[0091] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[0092] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[0093] As a possible implementation, the device also includes:

[0094] a determination module configured to determine the first reception beam;

[0095] wherein the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP.

[0096] As a possible implementation, the receiving module is also configured to:

[0097] receiving second indication information using a known reception beam corresponding to the first TRP, wherein the second indication information is configured to determine the first reception beam.

[0098] As a possible implementation, the known receive beam corresponds to the CORESET CORESET#0 associated with the first TRP, or the known receive beam is determined according to the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP and is the receive beam , corresponding to the third CORESET associated with the first TRP.

[0099] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00100] one or more TCI state indices corresponding to the TRP ID; or

[00101] one or more TCI state indexes corresponding to the CORESET pool index.

[00102] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC and fourth CE MAC comprises:

[00103] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00104] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00105] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00106] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00107] According to a fourth aspect of embodiments of the present invention, a beam indicating apparatus applicable to a network device is provided. The device contains:

[00108] a transmission module configured to transmit first indication information to the terminal using the first transmission beam;

[00109] wherein the first indication information is configured to indicate a second reception beam of the terminal, and the first transmit beam corresponds to the first reception beam of the terminal; And

[00110] the first receiving beam corresponds to the first TRP or the second TRP, and the second receiving beam corresponds to the second TRP.

[00111] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00112] As a possible implementation, the first indication information is a first MAC CE that is configured to indicate the ID of a first CORESET associated with the second TRP and a TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00113] As a possible implementation, the first indication information is a second MAC CE and a first DCI; wherein the second CE MAC is configured to indicate a plurality of activated TCIs; and the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00114] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the updated beam of the second TRP.

[00115] As a possible implementation, the first indication information is a third MAC CE;

[00116] wherein the third MAC CE is configured to indicate a second CORESET ID associated with the second TRP and a TCI status index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[00117] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00118] wherein the fourth MAC CE is configured to indicate a plurality of activated TCIs; And

[00119] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00120] As a possible implementation, the plurality of TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00121] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[00122] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00123] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00124] As a possible implementation

[00125] The first receive beam is the initial receive beam corresponding to CORESET CORESET#0 associated with the first TRP.

[00126] As a possible implementation, the transmission module is also configured to:

[00127] transmitting second indication information to the terminal using a transmit beam corresponding to a known receive beam of the terminal;

[00128] wherein the second indication information is configured to indicate the first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[00129] As a possible implementation, a known receive beam corresponds to a CORESET CORESET#0 associated with the first TRP, or a known receive beam corresponds to a third CORESET associated with the first TRP and is indicated by third indication information transmitted using the CORESET CORESET#0 associated with first TRP.

[00130] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00131] one or more TCI state indices corresponding to the TRP ID; or

[00132] one or more TCI state indexes corresponding to the CORESET pool index.

[00133] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00134] a plurality of TCI state indices corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00135] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00136] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00137] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00138] In accordance with a fifth aspect of embodiments of the present invention, a terminal is provided. The terminal contains a transceiver, memory and processor;

[00139] The memory is configured to store computer programs, the transceiver is configured to transmit and receive data under the control of the processor, and the processor is configured to read the computer programs in the memory to perform the following operations:

[00140] receiving, using the first reception beam, first indication information transmitted by the network device, the first indication information configured to indicate the second reception beam;

[00141] wherein the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00142] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00143] As a possible implementation, the first indication information is a first MAC CE;

[00144] wherein the first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00145] As a possible implementation, the first indication information is a second MAC CE and a first DCI;

[00146] wherein the second MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[00147] The first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00148] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or

[00149] the first reception beam corresponds to the second TRP, and the second reception beam corresponds to the updated beam of the second TRP.

[00150] As a possible implementation, the first indication information is a third MAC CE;

[00151] wherein the third MAC CE is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[00152] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00153] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[00154] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00155] As a possible implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00156] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[00157] As a possible implementation, in the first DCI and in the second DCI, each TCI state index corresponds to a predefined TRP ID and/or CORESET pool index.

[00158] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00159] As a possible implementation, the terminal also includes:

[00160] determining the first receiving beam;

[00161] wherein the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP.

[00162] As a possible implementation, the terminal also includes:

[00163] receiving second indication information using a known reception beam corresponding to the first TRP, wherein the second indication information is configured to determine the first reception beam.

[00164] As a possible implementation, a known receive beam corresponds to CORESET CORESET#0 associated with the first TRP; or the known receive beam corresponds to the third CORESET associated with the first TRP and is indicated by the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP.

[00165] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises one or more TCI state indices corresponding to a TRP ID; or one or more TCI state indexes corresponding to the CORESET pool index.

[00166] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises a plurality of TCI state indices corresponding to a plurality of TRP IDs, wherein each TCI state index corresponds to a TRP ID; or a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00167] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises an indication field corresponding to at least one TCI status index, wherein the indication field is configured to indicate, whether said at least one MAC CE has at least one TCI status index.

[00168] In accordance with a sixth aspect of embodiments of the present invention, a network device is provided. The network device contains a transceiver, memory and processor;

[00169] The memory is configured to store computer programs, the transceiver is configured to transmit and receive data under the control of the processor, and the processor is configured to read the computer programs in the memory to perform the following operations:

[00170] transmitting first indication information to the terminal using the first transmission beam;

[00171] wherein the first indication information is configured to indicate a second reception beam of the terminal, and the first transmit beam corresponds to the first reception beam of the terminal; And

[00172] the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00173] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00174] As a possible implementation, the first indication information is a first MAC CE that is configured to indicate the ID of a first CORESET associated with the second TRP and a TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00175] As a possible implementation, the first indication information is a second MAC CE and a first DCI; wherein the second CE MAC is configured to indicate a plurality of activated TCIs; and the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00176] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the updated beam of the second TRP.

[00177] As a possible implementation, the first indication information is a third MAC CE;

[00178] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI status index corresponding to the updated ray of the second TRP, and the updated ray of the second TRP corresponds to the second CORESET.

[00179] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00180] wherein the fourth MAC CE is configured to indicate a plurality of activated TCIs; And

[00181] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00182] As a possible implementation, the plurality of TCL state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00183] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI state index.

[00184] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00185] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00186] As a possible implementation, the first receive beam is the initial receive beam corresponding to CORESET CORESET#0 associated with the first TRP.

[00187] As an exemplary implementation, the network device also includes:

[00188] transmitting second indication information to the terminal using a transmit beam corresponding to a known receive beam of the terminal;

[00189] wherein the second indication information is configured to indicate a first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[00190] As a possible implementation, a known receive beam corresponds to a CORESET CORESET#0 associated with the first TRP, or a known receive beam corresponds to a third CORESET associated with the first TRP and is indicated by third indication information transmitted using the CORESET CORESET#0 associated with first TRP.

[00191] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00192] one or more TCI state indices corresponding to the TRP ID; or

[00193] one or more TCI state indexes corresponding to the CORESET pool index.

[00194] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00195] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00196] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00197] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00198] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00199] In accordance with a seventh aspect of embodiments of the present invention, a communication system is provided. The communication system contains: a terminal and a network device. The terminal may implement a beam indicating method according to the first aspect, and the network device may implement a beam indicating method according to the second aspect.

[00200] According to an eighth aspect of embodiments of the present invention, there is provided a computer-readable medium on which computer-readable instructions are stored. When executing computer-readable instructions, the processor implements a beam indicating method according to the first aspect.

[00201] In accordance with a ninth aspect of embodiments of the present invention, there is provided a computer-readable medium on which computer-readable instructions are stored. When executing the machine-readable instructions, the processor implements the beam indicating method according to the second aspect.

[00202] In accordance with a tenth aspect of embodiments of the present invention, there is provided a computer program product comprising computer programs. When computer programs are executed by the processor, a beam indicating method corresponding to the first or second aspect is implemented.

[00203] Technical solutions corresponding to embodiments of the present invention provide the following technical results.

[00204] The terminal receives first indication information using the first receive beam to determine a second receive beam to be used for subsequent communication with the network device. The first receive beam corresponds to the first TRP or the second TRP. According to the first indication information, a second reception beam corresponding to the second TRP is determined, so that the second reception beam is used when subsequently receiving the beam indication signaling transmitted by the network device using the second TRP, thereby indicating the indication information reception beam in the communication process and increasing the probability of successful alarm reception.

[00205] Additional aspects and advantages of the embodiments of the present invention will be set forth in the description that follows, and such aspects will become apparent from the description or may be learned by practice of the embodiments of the disclosure.

BRIEF DESCRIPTION OF THE DRAWINGS

[00206] These and other aspects and advantages of the embodiments of the present invention will become more apparent and understandable from the following description, in which reference is made to the accompanying drawings.

[00207] In FIG. 1 is a flowchart of a beam indicating method provided by an embodiment of the present invention.

[00208] In FIG. 2 is a block diagram of another beam indicating method provided by an embodiment of the present invention.

[00209] In FIG. 3 is a block diagram of another beam indicating method provided by an embodiment of the present invention.

[00210] In FIG. 4 is a block diagram of another beam indicating method provided by an embodiment of the present invention.

[00211] In FIG. 5 is a block diagram of a beam indicating apparatus provided by an embodiment of the present invention.

[00212] In FIG. 6 is a block diagram of another beam indicating apparatus provided by an embodiment of the present invention.

[00213] In FIG. 7 is a block diagram of a terminal provided by an embodiment of the present invention.

[00214] In FIG. 8 is a block diagram of a network device provided by an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[00215] The following describes in more detail examples of implementation of the present invention, illustrated by means of the accompanying drawings. The following description is given by reference to the accompanying drawings, in which like numbers denote the same or similar elements unless expressly indicated otherwise. The exemplary embodiments set forth in the following description do not cover all embodiments in accordance with the disclosure of the present invention. To the contrary, this specification provides only exemplary implementations of devices and methods consistent with aspects related to the disclosure of the invention, the essence of which is set forth in the accompanying claims.

[00216] The terms used in the embodiments of the present invention are used only to describe specific embodiments and are not intended to limit the embodiments of the invention. The singular number as used in the embodiments of the present invention and the accompanying claims also includes plural forms unless the context clearly indicates otherwise. It should also be appreciated that as used herein, the term “and/or” indicates and includes any combination or all possible combinations of one or more related enumerated elements.

[00217] It should also be noted that although the terms “first,” “second,” and “third” may be used to describe various information in the embodiments of the present invention, that information should not be limited to these terms. These terms are used only to distinguish information of the same type. For example, within the spirit of the present invention, the first information may also be referred to as second information, and likewise, the second information may also be referred to as first information. Depending on the context, the word "if" used in this description may mean "when", "while" or "in response to a determination".

[00218] The following describes in detail embodiments of the present invention and examples of their implementation, which are illustrated by the accompanying drawings, in which the same or similar numbers indicate the same or similar elements. The embodiments described below with reference to the accompanying drawings are explanatory and are used to explain the present invention, but are not intended to limit the invention.

[00219] A beam indicating method, a beam indicating apparatus, and a communication system provided within the scope of the present invention are described in detail below with reference to the accompanying drawings.

[00220] Explanation of terms

[00221] The initial beam is a beam used initially by the terminal to perform uplink and downlink transmission using TRP.

[00222] A known beam is a beam already used by the terminal to perform uplink and downlink transmissions using TRP.

[00223] The updated beam is a beam to be used by the terminal to perform uplink and downlink transmission using TRP.

[00224] The TRP corresponds to the serving cell or neighboring cell of the terminal.

[00225] CORESET refers to the configuration resources used for the PDCCH for DCI signaling.

[00226] A CORESET pool index value corresponds to one or more CORESETs, and each CORESET pool index corresponds to a TRP, that is, CORESETs corresponding to different CORESET pool index values are used for the PDCCHs of different TRPs.

[00227] In FIG. 1 is a flowchart of a beam indicating method provided by an embodiment of the present invention. The method is applicable in the terminal.

[00228] As shown in FIG. 1, the method includes the following steps.

[00229] In step 101, first indication information transmitted by the network device is received using a first reception beam, the first indication information is configured to indicate a second reception beam, wherein the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP. .

[00230] The beam indicating method according to embodiments of the present invention can be used in any terminal. The terminals may be located throughout the mobile communication system, and each terminal may be a fixed or mobile device. Those skilled in the art may also refer to a terminal as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, terminal device, wireless device, wireless communication device, remote device, mobile user station, user access device. , mobile user device, wireless user device, remote user device, handheld device, user agent, mobile client, client, vehicle-mounted device, wearable device, or use other appropriate terms. The terminal may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a portable device, a tablet, a laptop computer, a cordless telephone, a wireless local loop (WLL), etc. d., that is, a device capable of communicating with a network device in a mobile communication system.

[00231] Network devices are placed on the wireless access network to perform the wireless access function for the terminal. The network device may be a base station (BS, Base Station). The network device may communicate wirelessly with the terminal through one or more antennas. A network device may provide communications coverage for the geographic area in which it is located. The BS may be a different type of device, such as a macro base station, a micro base station, a relay station, an access point, etc. In some embodiments, the BS may be referred to by those skilled in the art as a transceiver BS, a wireless BS, an access point, a wireless transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a NodeB, an evolved NodeB (eNB or eNodeB, evolved NodeB), or other suitable terms. For example, in a 5G system, the BS is called gNB. For ease of description, in embodiments of the present invention, the above-mentioned devices performing wireless communication functions for terminals are collectively referred to as network devices.

[00232] According to an embodiment, the terminal receives first indication information using a first reception beam to determine a second reception beam to be used for subsequent communication between the terminal and the network device. The first reception beam corresponds to the first TRP or the second TRP, which means that it may represent first indication information transmitted by the first TRP or first indication information transmitted by the second TRP that is received using the first reception beam. As an implementation, if the first indication information is transmitted by the first TRP, the first TRP informs the terminal about the subsequent second reception beam using the indication information, the second reception beam corresponds to the second TRP, and the terminal uses the second reception beam to receive the information transmitted by the second TRP, including data. transmitted on a shared channel, or signaling, or reference signals on a control channel. As another implementation, if the first indication information is transmitted by the second TRP, it means that the first reception beam corresponds to the second TRP, and the second reception beam still corresponds to the second TRP, and the second TRP informs the terminal with the first indication information that the subsequent second the transmit beam is still transmitted by the second TRP. Accordingly, the second TRP updates the reception beam used by the terminal to receive communication information transmitted by the second TRP. According to the first indication information, a second reception beam corresponding to the second TRP is determined, so that the second reception beam is used upon subsequent reception of the beam indication signaling transmitted by the network device using the second TRP, thereby indicating the reception beam, providing the indication of the reception beam of the indication information if The TRP switches or the TRP's own beam needs to be updated during communication, thereby increasing the likelihood of successful signaling reception.

[00233] According to the above embodiments, the terminal uses a first reception beam to receive the first indication information transmitted by the network device, and in various scenarios, the second reception beam indicated by the first indication information corresponds to various beams of the second TRP, which may indicate the initial beam or updated beam, as explained below for each of the three different scenarios.

[00234] In the first scenario, the first receive beam corresponds to the first TRP, and the second receive beam corresponds to the start beam of the second TRP. In this embodiment, the terminal receives first guidance information transmitted by the network device using a first reception beam, wherein the guidance information indicates an initial beam of the second TRP. For example, the first TRP corresponds to a TRP of a serving cell, and the second TRP may correspond to a TRP of a serving cell or a neighboring cell. Since the terminal has not previously transmitted with the second TRP, the terminal is not aware of the initial beam for communication with the second TRP, so the first TRP needs to transmit indication information for indicating the initial beam.

[00235] In this scenario, the signaling for indicating the first indication information may differ, as illustrated by the two embodiments below.

[00236] According to an embodiment of the present invention, the first indication information is a first MAC CE.

[00237] The first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET. For example, the first CORESET ID (ie, the first CORESET ID) may be CORESET#1, CORESET#2, or CORESET#3, which is not limited to the embodiment.

[00238] According to an embodiment, the first MAC CE activates a TCI status index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET, that is, the first CORESET corresponds to the activated TCI status index. The TCI status index activated by the MAC CE can also be used to transmit other CORESETs belonging to the same group as the first CORESET, Physical Downlink Control Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), Physical Channel uplink control (PUCCH) or reference signal. The reference signal includes a channel state information reference signal (CSI-RS, Channel State Information-Reference Signal), a sounding reference signal (SRS, Sounding Reference Signal), a positioning reference signal (PRS, Positioning Reference Signal), a demodulation reference signal (DMRS, Demodulation Reference Signal), etc. That is, the TCI status index activated by the CE MAC may correspond to the common beam.

[00239] According to another embodiment of the present invention, the first indication information is a second MAC CE and a first DCI. That is, the first indication information is determined based on both the second MAC CE and the first DCI.

[00240] The second CE MAC is configured to indicate a plurality of enabled TCI state indexes. The first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE. That is, if the second MAC CE indicates that the plurality of TCIs is activated, the first DCI is configured to determine the TCI from the plurality of activated TCIs as the TCI corresponding to the initial beam of the second TRP. The TCI status index indicated by the DCI can also be used to transmit other CORESETs belonging to the same group as the first CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index indicated by the DCI may correspond to a common beam.

[00241] According to the second scenario, the first reception beam used by the terminal corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; that is, the updated beam of the second TRP is also indicated by the indication information transmitted by the first TRP. When considering the first and second scenarios comprehensively, both the initial beam of the second TRP and the updated beam of the second TRP are indicated by the indication information transmitted by the first TRP. For example, the first TRP corresponds to the TRP of the serving cell, and the second TRP corresponds to the TRP of the serving cell or a neighboring cell.

[00242] According to the third scenario, the first reception beam used by the corresponding terminal corresponds to the second TRP, and the subsequent reception beam still corresponds to the second TRP, that is, the corresponding second TRP provides an update indication of its own corresponding reception beam to initiate updating of the corresponding reception beam of the terminal. Thus, the first receive beam corresponds to the second TRP, and the second receive beam corresponds to the updated beam of the second TRP. If the first and third scenarios are considered comprehensively, the initial beam of the second TRP is indicated by the indication information transmitted by the first TRP, and the updated beam of the second TRP is indicated by the indication information transmitted by the second TRP. For example, the first TRP corresponds to the TRP of the serving cell, and the second TRP corresponds to the TRP of the serving cell or a neighboring cell.

[00243] In the second and third scenarios, the signaling for indicating the first indication information is different, as illustrated by the two embodiments below.

[00244] As an implementation, the first indication information is a third MAC CE. The third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET. For example, the second CORESET ID (ie, the second CORESET ID) may be CORESET#1, CORESET#2, or CORESET#3, which is not limited to this embodiment. The TCI status index activated by the MAC CE can also be used to transmit other CORESETs belonging to the same group as the second CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index activated by the CE MAC may correspond to a common beam.

[00245] It should be appreciated that the TCI state index is configured to indicate a beam, which means that the corresponding beam can be determined based on the reference signal resource indicated by the TCI state index.

[00246] It should be noted that the first CORESET ID and the second CORESET ID may be identical or different. For example, the first CORESET ID may be CORESET#0, and the second CORESET ID may be CORESET#1. Alternatively, the first CORESET ID and the second CORESET ID may both be CORESET#0 or CORESET#1, which is not limited to this embodiment.

[00247] As another implementation, the first indication information is a fourth MAC CE and a second DCI. The fourth MAC CE is configured to indicate a plurality of activated TCIs. The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE. The TCI status index indicated by the DCI may also be used to transmit other CORESETs belonging to the same group as the second CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index indicated by the DCI may correspond to a common beam.

[00248] According to an embodiment of the present invention, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00249] one or more TCI state indices corresponding to the TRP ID; or one or more TCI state indexes corresponding to the CORESET pool index.

[00250] According to a second embodiment consistent with the disclosure of the present invention, at least one CE MAC of the first CE MAC, the second CE MAC, the third CE MAC and the fourth CE MAC comprises:

[00251] a plurality of TCI state indices corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00252] According to a second embodiment consistent with the disclosure of the present invention, at least one CE MAC of the first CE MAC, the second CE MAC, the third CE MAC and the fourth CE MAC comprises:

[00253] an indication field corresponding to at least one TCI status index, wherein the indication field is configured to indicate whether there is at least one TCI status index in the at least one MAC CE, for example: a first indication field, a second indication field , the active TCI field of the first TRP and the active TCI field of the second TRP. The first indication field corresponds to the first TRP, for example, if the indication field is 0, this means that the TCI state index in the MAC CE (active TCI field of the first TRP) is missing, that is, the TCI state corresponding to the first TRP is not activated. The second indication field corresponds to the second TRP, for example, if the indication field is 1, this means that the TCI state index is present in the MAC CE (active TCI field of the second TRP), that is, the TCI state corresponding to the first TRP is activated.

[00254] According to an embodiment of the present invention, if a CE MAC indicates a plurality of activated TCI state indexes when indicating the initial beam of a second TRP, then a CE MAC is required to indicate the plurality of TCI state indexes and a DCI to indicate a TCI state index corresponding to the initial beam of the second TRP. In addition, if it is also desired to indicate the updated beam of the second TRP, another MAC CE is required to indicate a plurality of TCI state indexes and a DCI to indicate the TCI state index corresponding to the updated beam of the second TRP. That is, after specifying the initial beam of the second TRP, the subsequent updated beam is also indicated, and two MAC CEs are required. In order to reduce signaling overhead, MAC CEs may be combined.

[00255] As a possible implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP. That is, the plurality of activated TCI state indexes carried in the fourth CE MAC at least includes a TCI state index corresponding to the initial beam and a TCI state index corresponding to the updated beam. Thus, if it is desired to indicate the initial beam of the second TRP, it is necessary to transmit only the DCI to indicate the TCI state index corresponding to the initial beam of the second TRP from the plurality of activated TCI state indexes carried in the fourth MAC CE. Alternatively, if it is desired to indicate the initial beam of the second TRP, then a given TCI state index from a plurality of activated TCI state indexes carried in the fourth MAC CE may be directly designated as the initial beam of the second TRP. For example, the smallest TCI status index is determined as a given TCI status index. Alternatively, the fourth CE MAC maintains a mapping relationship between the TCI indication field code points of the DCI information and TCI state combinations. A TCI state combination contains 1 or 2 TCI states, and a given TCI state index is a TCI state index in a TCI state combination corresponding to a given DCI code point. For example, a given DCI code point is the code point with the smallest value. If an updated beam of the second TRP is subsequently required to be indicated, then another DCI is sent to indicate one TCI state index from the plurality of activated TCI state indexes in the fourth MAC CE that corresponds to the updated beam of the second TRP. By using one CE MAC to represent the CE MAC to indicate the initial beam and the CE MAC to indicate the updated CE MAC beam, the CE MAC overhead and cost in the system are reduced.

[00256] According to an embodiment of the present invention, in some scenarios, the first receive beam corresponds to the first TRP, and the second receive beam corresponds to the initial beam of the second TRP. In another scenario, the first receive beam corresponds to the first TRP, and the second receive beam corresponds to the updated beam of the second TRP. In these two scenarios, if the CE MAC is configured to indicate a plurality of activated TCIs, then said DCI is required to indicate one TCI among the plurality of activated TCIs and indicate whether the TCI corresponds to the first TRP or the second TRP, to improve efficiency and precision of indication. The following describes in detail the option implemented using the following three implementations.

[00257] As a first implementation, the first DCI and the second DCI contain an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to a TCI status index. That is, the target indication field indicates which TRP and/or CORESET pool corresponds to the TCI status index. Each CORESET pool index corresponds to a TRP. Once the CORESET pool index is determined, the corresponding TRP can be determined, which, for example, can be the first TRP or the second TRP.

[00258] As a second implementation, in the first DCI and in the second DCI, each TCI state index corresponds to a predefined TRP ID and/or CORESET pool index. Thus, different TCI state indices have corresponding TRP IDs, that is, different TRP IDs correspond to different TCI state indices. For example, if the TCI state indices corresponding to the first TRP are 1 and 2, the TCI state indices corresponding to the second TRP are 3 and 4. Thus, according to the predetermined TRP ID corresponding to the TCI state index, it can be determined which TRP is the corresponding TRP, such as first TRP or second TRP. Alternatively, various TCI state indexes have corresponding CORESET pool indices, according to a predetermined CORESET pool index corresponding to the TCI state index, and it is possible to determine which TRP is the corresponding TRP, eg, the first TRP or the second TRP. There is a mapping between CORESET pool indexes and TRPs, and if a CORESET pool index is determined, then the corresponding TRP can be determined, eg the first TRP or the second TRP.

[00259] As a third implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00260] As an example, consider the first DCI, according to the implementation, the TRP ID corresponding to the TCI status index in the first DCI is the TRP ID indicated by the CE MAC that activates the TCI status index. That is, the CE MAC indicates the TRP ID. As an implementation in the MAC CE format, the location of the bits for activating the TCI state indices of different TRPs is set differently. Based on the location of the bits, it is possible to determine the TRP to which the activated TCI status index belongs. As a second implementation, the CORESET pool index corresponding to the first DCI is the CORESET pool index indicated by the CE MAC that activates the TCI status index. As a third implementation, the MAC CE format contains a CORESET ID, and each CORESET ID corresponds to a unique CORESET pool index, that is, a TRP corresponding to a TCI state index can be determined based on the CORESET ID. As a fourth implementation, various bit values may also be set to indicate whether the TCI status index of the corresponding TRP should be activated and the TRP whose TCI status index is being activated.

[00261] In FIG. 2 is a block diagram of another beam indicating method provided by an embodiment of the present invention. The method is applicable in the terminal. As shown in FIG. 2, the method includes the following steps.

[00262] At step 201, a first receiving beam is determined.

[00263] As an implementation consistent with an embodiment of the present invention, the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP. The initial receive beam is a beam used initially by the terminal to perform uplink and downlink transmission using the first TRP. The initial receive beam CORESET#0 associated with the first TRP may be determined by the terminal based on the detected Reference Signal Receiving Power (RSRP) of the SSB (Synchronization Signal and Strategic Missile Block) transmitted by the network device. If the terminal detects that the RSRP value exceeds the threshold, it initiates random access using the Physical Random Access Channel (PRACH) corresponding to SSB, that is, the receive beam corresponding to SSB is used as the initial receive beam CORESET#0 , and thus the first receiving beam is determined.

[00264] As another embodiment of the present invention, a known reception beam corresponding to the first TRP is used to receive the second indication information. The second indication information is configured to indicate the first reception beam. That is, a known reception beam corresponding to the first TRP is used to receive second indication information that indicates the first reception beam.

[00265] A known receive beam is a beam already used by the terminal in the process of receiving downlink transmission data transmitted by the first TRP. As an implementation, the known receive beam corresponds to CORESET#0 associated with the first TRP. That is, a known beam is a beam corresponding to CORESET#0 determined if the terminal detects that the RSRP SSB value transmitted by the network device is greater than a threshold value. As another implementation, a known receive beam corresponding to the third CORESET associated with the first TRP is indicated by third indication information transmitted using CORESET#0 associated with the first TRP.

[00266] At step 202, first indication information transmitted by the network device is received using a first reception beam, wherein the first indication information is configured to indicate a second reception beam, and the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00267] Step 202 can be explained with reference to any previous embodiment with the same principles, which are not further described again.

[00268] According to an embodiment of the method, the terminal receives first indication information using a first reception beam to determine a second reception beam to be used in subsequent communication between the terminal and the network device. The first reception beam corresponds to the first TRP or the second TRP, that is, the first reception beam may be a reception beam used when receiving the first indication information transmitted by the first TRP, or a reception beam used when receiving the first indication information transmitted by the second TRP. According to the first indication information, a second reception beam corresponding to the second TRP is determined, so that the second reception beam is used when subsequently receiving the guidance signaling transmitted by the network device using the second TRP, thereby indicating the reception beam and increasing the probability of successful reception of the signaling.

[00269] In FIG. 3 is a block diagram of another beam indicating method provided by an embodiment of the present invention. The method is applicable in a network device.

[00270] As shown in FIG. 3, the method includes the following steps.

[00271] At step 301, first indication information is transmitted to the terminal using a first transmit beam, wherein the first indication information is configured to indicate a second receive beam of the terminal, and the first transmit beam corresponds to the first receive beam of the terminal, and the first receive beam corresponds to the first TRP or the second TRP, and the second receiving beam corresponds to the second TRP.

[00272] The beam indicating method according to an embodiment of the present invention can be applied to any network device. Network devices are placed on a wireless access network to perform the wireless access function for the terminal. The network device may be a BS. The network device may communicate wirelessly with the terminal through one or more antennas. A network device may provide communications coverage for the geographic area in which it is located. The BS may be a different type of device, such as a macro base station, a micro base station, a relay station, an access point, etc. In some embodiments, the BS may be referred to by those skilled in the art as a transceiver BS, a wireless BS, an access point, a wireless transceiver, a BSS, an ESS, a NodeB, an enhanced NodeB (eNB or eNodeB), or other suitable terms. For example, in 5G system the BS is called gNB. For ease of description, in embodiments of the present invention, the above-mentioned devices performing wireless communication functions for terminals are collectively referred to as network devices.

[00273] Terminals may be located throughout a mobile communication system, and each terminal may be a fixed or mobile device. Those skilled in the art may also refer to a terminal as a mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, terminal device, wireless device, wireless communication device, remote device, mobile user station, user access device. , mobile user device, wireless user device, remote user device, handheld device, user agent, mobile client, client, vehicle-mounted device, wearable device, or use other appropriate terms. The terminal may be a cellular telephone, PDA, wireless modem, wireless communication device, portable device, tablet, laptop computer, cordless telephone, WLL station, etc., that is, a device capable of communicating with a network device in a mobile communication system.

[00274] According to an embodiment, the network device transmits the first indication information to the terminal using the first transmit beam, so that the terminal determines the second reception beam based on the first indication information. The second reception beam is a reception beam used by the terminal to subsequently communicate with the network device after receiving the first indication information.

[00275] According to an embodiment, the first transmit beam corresponds to the first receive beam of the terminal. The first receive beam corresponds to the first TRP or the second TRP. That is, the first reception beam is used to receive either first indication information transmitted by the first TRP or first indication information transmitted by the second TRP. As one implementation, if the first indication information is transmitted by the first TRP, then the first TRP informs the terminal about a subsequent second reception beam through the first indication information, and the second reception beam corresponds to the second TRP. As another implementation, if the first indication information is transmitted by the second TRP, it means that the first reception beam corresponds to the second TRP, and the second reception beam still corresponds to the second TRP, and the corresponding terminal updates the reception beam used when receiving communication information transmitted by the second TRP . According to the first indication information, the second reception beam of the terminal is determined, and thus the terminal uses the second reception beam for reception, if subsequently the network device uses the second TRP to transmit signaling for the beam indication, whereby the terminal's reception beam is indicated, and the beam is handed over, when the TRP is switched or the TRP's own transmit beam needs to be updated during communication, thereby increasing the likelihood of successful signaling reception.

[00276] According to the above embodiment, the network device transmits first indication information to the terminal using the first transmission beam, and in various scenarios, the first reception beam corresponds to the first TRP or the second TRP, while the second transmission beam indicated by the first indication information , corresponds to different beams of the second TRP, which can represent either an initial beam or an updated beam, as explained below for each of the three different scenarios.

[00277] In the first scenario, the first receive beam corresponds to the beam of the first TRP, and the second receive beam corresponds to the initial beam of the second TRP. In this embodiment, the network device transmits first indication information to the terminal using the first transmission beam of the first TRP, wherein the first indication information indicates the initial beam of the second TRP. For example, the first TRP corresponds to a TRP of a serving cell, and the second TRP may correspond to a TRP of a serving cell or a neighboring cell. Since the terminal has not previously transmitted with the second TRP, the terminal is not aware of the initial beam for communication with the second TRP, so the first TRP needs to transmit first indication information for indicating the initial beam.

[00278] In this scenario, the signaling for indicating the first indication information is different, as illustrated by the two embodiments below.

[00279] According to an embodiment of the present invention, the first indication information is a first MAC CE.

[00280] The first CE MAC is configured to indicate a first CORESET ID (also referred to as a first CORESET ID) associated with the second TRP and a TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET. For example, the first CORESET ID may be CORESET#1, CORESET#2, or CORESET#3, which is not limited to the embodiment.

[00281] According to an embodiment, the first MAC CE activates a TCI status index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET, that is, the first CORESET corresponds to the activated TCI status index. The TCI status index activated by the MAC CE can also be used to transmit other CORESETs belonging to the same group as the first CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index activated by the CE MAC may correspond to a common beam.

[00282] According to another embodiment of the present invention, the first indication information is a second MAC CE and a first DCI. That is, the first indication information is determined based on both the second MAC CE and the first DCI.

[00283] The second CE MAC is configured to indicate a plurality of enabled TCI state indexes. The first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE. That is, if the second MAC CE indicates that the plurality of TCIs is activated, the first DCI is configured to determine the TCI from the plurality of activated TCIs as the TCI corresponding to the initial beam of the second TRP. The TCI status index indicated by the DCI can also be used to transmit other CORESETs belonging to the same group as the first CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index indicated by the DCI may correspond to a common beam.

[00284] According to the second scenario, the first reception beam corresponds to the beam of the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; that is, the updated beam of the second TRP is also indicated by the indication information transmitted by the first TRP. When considering the first and second scenarios comprehensively, both the initial beam of the second TRP and the updated beam of the second TRP are indicated by the first indication information transmitted by the first TRP. For example, the first TRP corresponds to the TRP of the serving cell, and the second TRP corresponds to the TRP of the serving cell or a neighboring cell.

[00285] In the third scenario, the corresponding second TRP provides an update indication for its own corresponding receive beam. Thus, the first receive beam corresponds to the second TRP, and the second receive beam corresponds to the updated beam of the second TRP. When considering the first and third scenarios comprehensively, the initial beam of the second TRP is indicated by the first indication information transmitted by the first TRP, and the updated beam of the second TRP is indicated by the first indication information transmitted by the second TRP. For example, the first TRP corresponds to the TRP of the serving cell, and the second TRP corresponds to the TRP of the serving cell or a neighboring cell.

[00286] In the second and third scenarios, the signaling for indicating the first indication information is different, as illustrated by the two embodiments below.

[00287] As one implementation, the first indication information is a third MAC CE. The third MAC CE is configured to indicate a second CORESET ID (also referred to as a second CORESET ID) associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET. For example, the second CORESET ID may be CORESET#1, CORESET#2, or CORESET#3, which is not limited to the embodiment. The TCI status index activated by the MAC CE can also be used to transmit other CORESETs belonging to the same group as the second CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index activated by the CE MAC may correspond to a common beam.

[00288] It should be appreciated that the TCI state index is configured to indicate a beam, which means that the corresponding beam can be determined based on the reference signal resource indicated by the TCI state index.

[00289] It should be noted that the first CORESET ID and the second CORESET ID may be identical or different. For example, the first CORESET ID may be CORESET#0, and the second CORESET ID may be CORESET#1. Alternatively, the first CORESET ID and the second CORESET ID may both be CORESET#0 or CORESET#1, which is not limited to this embodiment.

[00290] As another implementation, the first indication information is a fourth MAC CE and a second DCI. The fourth MAC CE is configured to indicate a plurality of activated TCIs. The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE. The TCI status index indicated by the DCI may also be used to transmit other CORESETs belonging to the same group as the second CORESET, PDSCH, PUSCH, PUCCH or reference signal. The reference signal includes CSI-RS, SRS, PRS, DMRS, etc. That is, the TCI state index indicated by the DCI may correspond to a common beam.

[00291] According to an embodiment of the present invention, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00292] one or more TCI state indices corresponding to the TRP ID; or one or more TCI state indexes corresponding to the CORESET pool index.

[00293] According to a second embodiment consistent with the disclosure of the present invention, at least one CE MAC of the first CE MAC, the second CE MAC, the third CE MAC and the fourth CE MAC comprises:

[00294] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00295] According to a second embodiment consistent with the disclosure of the present invention, at least one CE MAC of the first CE MAC, the second CE MAC, the third CE MAC and the fourth CE MAC comprises:

[00296] an indication field corresponding to at least one TCI status index, wherein the indication field is configured to indicate whether there is at least one TCI status index in the at least one MAC CE, for example: a first indication field, a second indication field , the active TCI field of the first TRP and the active TCI field of the second TRP. The first indication field corresponds to the first TRP, if the indication field is 0, this means that the TCI state index in the MAC CE (active TCI field of the first TRP) is missing, that is, the TCI state corresponding to the first TRP is not activated. The second indication field corresponds to the second TRP, if the indication field is 1, it means that the TCI state index is present in the MAC CE (active TCI field of the second TRP), that is, the TCI state corresponding to the first TRP is activated.

[00297] According to an embodiment of the present invention, if a CE MAC indicates a plurality of activated TCI state indexes when indicating the initial beam of the second TRP, then a CE MAC is required to indicate the plurality of TCI state indexes and a DCI to indicate the TCI state index corresponding to the initial beam of the second TRP. In addition, if it is further desired to indicate the updated beam of the second TRP, another CE MAC is required to indicate a plurality of TCI state indexes and a DCI to indicate the TCI state index corresponding to the updated beam of the second TRP. That is, after specifying the initial beam of the second TRP, the subsequent updated beam is also indicated, and two MAC CEs are required. In order to reduce signaling overhead, MAC CEs may be combined.

[00298] As one implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP. That is, the plurality of activated TCI state indexes carried in the fourth CE MAC at least includes a TCI state index corresponding to the initial beam and a TCI state index corresponding to the updated beam. Thus, if it is desired to indicate the initial beam of the second TRP, it is necessary to transmit only the DCI to indicate the TCI state index corresponding to the initial beam of the second TRP from the plurality of activated TCI state indexes carried in the fourth MAC CE. Alternatively, if it is desired to indicate the initial beam of the second TRP, then a given TCI state index from a plurality of activated TCI state indexes carried in the fourth MAC CE may be directly designated as the initial beam of the second TRP. For example, the smallest TCI status index is determined as a given TCI status index. Alternatively, the fourth MAC CE provides a mapping relationship between the TCI DCI indication field code points and TCI state combinations. A TCI state combination contains 1 or 2 TCI states, and a given TCI state index is a TCI state index in a TCI state combination corresponding to a given DCI code point. For example, a given DCI code point is the code point with the smallest value. If an updated beam of the second TRP is subsequently required to be indicated, then another DCI is sent to indicate one TCI state index from the plurality of activated TCI state indexes in the fourth MAC CE that corresponds to the updated beam of the second TRP. By presenting a CE MAC to indicate the initial beam and a CE MAC to indicate the updated beam using a single CE MAC, the MAC CE overhead is reduced and the system overhead is reduced.

[00299] According to an embodiment of the present invention, in some scenarios, the first receive beam corresponds to the first TRP, and the second receive beam corresponds to the initial beam of the second TRP. In another scenario, the first receive beam corresponds to the first TRP, and the second receive beam corresponds to the updated beam of the second TRP. In these two scenarios, when the CE MAC is configured to indicate a plurality of activated TCIs, a DCI is required to indicate one TCI among the plurality of activated TCIs and indicate whether the TCI corresponds to the first TRP or the second TRP, to improve efficiency and precision of indication. The following describes in detail the option implemented using the following three implementations.

[00300] As a first implementation, the first DCI and the second DCI contain an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index. That is, the target indication field indicates which TRP and/or CORESET pool corresponds to the TCI status index. Each CORESET pool index corresponds to a TRP. Once the CORESET pool index is determined, the corresponding TRP can be determined, which, for example, can be the first TRP or the second TRP.

[00301] As a second implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index. Thus, different TCI state indices have corresponding TRP IDs, that is, different TRP IDs correspond to different TCI state indices. For example, if the TCI state indices corresponding to the first TRP are 1 and 2, the TCI state indices corresponding to the second TRP are 3 and 4. Thus, according to the predetermined TRP ID corresponding to the TCI state index, it can be determined which TRP is the corresponding TRP, such as first TRP or second TRP. Alternatively, different TCI state indexes have corresponding CORESET pool indices according to a predetermined CORESET pool index corresponding to the TCI state index, and it is possible to determine which TRP is the corresponding TRP, eg, the first TRP or the second TRP. There is a correspondence between CORESET pool indexes and TRPs, if a CORESET pool index is determined, then it is possible to determine which TRP is the corresponding TRP, for example the first TRP or the second TRP.

[00302] As a third implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00303] As an example, consider the first DCI, according to the implementation, the TRP ID corresponding to the TCI status index in the first DCI is the TRP ID indicated by the CE MAC that activates the TCI status index. That is, the CE MAC indicates the TRP ID. As one implementation in the MAC CE format, the location of the bits for activating the TCI state indices of different TRPs is set differently. Based on the location of the bits, it is possible to determine the TRP to which the activated TCI status index belongs. As a second implementation, the CORESET pool index corresponding to the TCI status index in the first DCI is the CORESET pool index indicated by the CE MAC that activates the TCI status index. As a third implementation, the MAC CE format contains a CORESET ID, and each CORESET ID corresponds to a unique CORESET pool index, that is, a TRP corresponding to a TCI state index can be determined based on the CORESET ID. As a fourth implementation, various bit values may also be set to indicate whether the TCI status index of the corresponding TRP should be activated, and the TRP whose TCI status index is being activated.

[00304] According to an embodiment of the present invention, first indication information is transmitted to the terminal using a first transmission beam, wherein the first transmission beam corresponds to a first reception beam, that is, the terminal receives the first indication information using the first reception beam. As for the method of determining the first reception beam used by the terminal, according to an embodiment of the present invention, the first reception beam is the initial reception beam corresponding to CORESET#0 associated with the first TRP. The initial receive beam is a beam used initially by the terminal to perform uplink and downlink transmissions using the first TRP. The initial receive beam corresponding to CORESET#0 associated with the first TRP may be determined by the terminal based on the detected RSRP SSB value transmitted by the network device. If the terminal detects that the RSRP value exceeds the threshold value, then it initiates random access using the PRACH resource corresponding to the SSB, that is, the receive beam corresponding to the SSB is used as the initial receive beam CORESET#0, and thus the first receive beam is determined .

[00305] In FIG. 4 is a block diagram of another beam indicating method provided by an embodiment of the present invention. The method is applicable in a network device. Next, another method of indicating the first reception beam of the terminal is described. As shown in FIG. 4, the method includes the following steps.

[00306] At step 401, the second indication information is transmitted to the terminal using a transmit beam corresponding to a known receive beam of the terminal.

[00307] The second indication information is configured to indicate the first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[00308] According to an embodiment of the present invention, a known receive beam is a beam already used by the terminal when transmitting downlink transmission data to the terminal by the first TRP. As an implementation, the known receive beam corresponds to CORESET#0 associated with the first TRP. That is, the known receive beam is a beam corresponding to CORESET#0 determined if the terminal detects that the RSRP SSB value transmitted by the network device is greater than a threshold value. As another implementation, a known receive beam corresponding to the third CORESET associated with the first TRP is indicated by third indication information transmitted using CORESET#0 associated with the first TRP.

[00309] At step 402, the first indication information is transmitted to the terminal using the first transmit beam;

[00310] Step 402 can be explained with reference to any previous embodiment with the same principles, which are not further described again.

[00311] According to the beam indication method of the embodiment, the network device transmits first indication information to the terminal using the first transmit beam to determine the second reception beam to be used by the terminal when the terminal subsequently communicates with the network device. The first receiving beam corresponds to the first TRP or the second TRP, and the second receiving beam corresponds to the second TRP. If the network device subsequently uses the second TRP to transmit beam indication signaling, the terminal uses the second receive beam to receive the signaling, resulting in the terminal receiving beam being indicated and increasing the probability of successful reception of the signaling.

[00312] According to the beam indicating method described above in the embodiments, a beam indicating apparatus is also provided within the scope of the disclosure of the present invention. Since the beam indicating device provided in the embodiments of the present invention corresponds to the method described above in the embodiments, implementations of the beam indicating method are also applicable in the beam indicating device according to the embodiment of the present invention and will not be described in detail further.

[00313] In FIG. 5 is a block diagram of a beam indicating apparatus 110 as illustrated by an embodiment of the present invention. The device is applicable in the terminal.

[00314] As shown in FIG. 5, the beam indicating device 110 includes a receiving unit 51.

[00315] The receiving unit 51 is configured to receive first indication information transmitted by the network device using the first reception beam, and the indication information is configured to indicate the second reception beam.

[00316] The first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00317] Additionally, as a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00318] As a possible implementation, the first indication information is a first MAC CE.

[00319] The first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00320] As a possible implementation, the first indication information is a second MAC CE and a first DCI.

[00321] The second CE MAC is configured to indicate a plurality of enabled TCI state indexes.

[00322] The first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00323] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or

[00324] the first reception beam corresponds to the second TRP, and the second reception beam corresponds to the updated beam of the second TRP.

[00325] As a possible implementation, the first indication information is a third MAC CE.

[00326] The third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET.

[00327] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI.

[00328] The fourth CE MAC is configured to indicate a plurality of activated TCI state indexes.

[00329] The second DCI is configured to indicate a TCL state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00330] As a possible implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00331] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI state index.

[00332] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00333] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00334] As a possible implementation, the device also includes: [00335] a determination module configured to determine the first reception beam;

[00336] wherein the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP.

[00337] As a possible implementation, the receiving module 51 is also configured to:

[00338] receiving second indication information using a known reception beam corresponding to the first TRP, wherein the second indication information is configured to determine the first reception beam.

[00339] As a possible implementation, a known receive beam corresponds to CORESET CORESET#0 associated with the first TRP; or the known receive beam corresponds to the third CORESET associated with the first TRP and is indicated by the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP.

[00340] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00341] one or more TCI state indices corresponding to the TRP ID; or

[00342] one or more TCI state indexes corresponding to the CORESET pool index.

[00343] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00344] a plurality of TCI state indices corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00345] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00346] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00347] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00348] In an apparatus according to an embodiment of the present invention, the terminal receives first indication information using a first reception beam to determine a second reception beam to be used when the terminal subsequently communicates with a network device. The first reception beam corresponds to the first TRP or the second TRP, that is, the first reception beam may be a reception beam used when receiving the first indication information transmitted by the first TRP, or a reception beam used when receiving the first indication information transmitted by the second TRP. According to the first indication information, a second reception beam corresponding to the second TRP is determined, so that the second reception beam is used to receive the indication signaling transmitted by the network device using the second TRP, thereby indicating the reception beam and increasing the probability of successful reception of the signaling.

[00349] According to the beam indicating method described above in the embodiments, a beam indicating apparatus is also provided within the scope of the disclosure of the present invention. Since the beam indicating device provided in the embodiments of the present invention corresponds to the beam indicating method described above in the embodiments, implementations of the beam indicating method are also applicable in the beam indicating device presented in the embodiment of the present invention and will not be described in detail further.

[00350] In FIG. 6 is a block diagram of a beam indicating apparatus 120 as illustrated by an embodiment of the present invention. The device is applicable in a network device.

[00351] The beam indicating device 120 includes a transmission module 61 .

[00352] The transmission unit 61 is configured to transmit first indication information to the terminal using the first transmission beam.

[00353] The first indication information is configured to indicate a second reception beam of the terminal, and the first transmit beam corresponds to the first reception beam of the terminal; and the first receiving beam corresponds to the first TRP or the second TRP, and the second receiving beam corresponds to the second TRP.

[00354] Additionally, as a possible implementation, the first reception beam is a beam of the first TRP, and the second reception beam is a start beam of the second TRP.

[00355] As a possible implementation, the first indication information is a first MAC CE that is configured to indicate the ID of a first CORESET associated with the second TRP and a TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00356] As a possible implementation, the first indication information is a second MAC CE and a first DCI; wherein the second CE MAC is configured to indicate a plurality of activated TCIs; and the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00357] As a possible implementation, the first reception beam corresponds to the beam of the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first reception beam corresponds to a beam of the second TRP, and the second reception beam corresponds to an updated beam of the second TRP.

[00358] As a possible implementation, the first indication information is a third MAC CE;

[00359] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated ray of the second TRP, and the updated ray of the second TRP corresponds to the second CORESET.

[00360] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00361] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[00362] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00363] As a possible implementation, the plurality of TCL state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00364] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[00365] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00366] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00367] As a possible implementation, the first receive beam is the initial receive beam corresponding to CORESET CORESET#0 associated with the first TRP.

[00368] As a possible implementation, the above transmission module 61 is also configured to:

[00369] transmitting second indication information to the terminal using a transmit beam corresponding to a known receive beam of the terminal; wherein the second indication information is configured to indicate a first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[00370] As a possible implementation, a known receive beam corresponds to a CORESET CORESET#0 associated with the first TRP, or a known receive beam corresponds to a third CORESET associated with the first TRP and is indicated by third indication information transmitted using the CORESET CORESET#0 associated with first TRP.

[00371] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00372] one or more TCI state indices corresponding to the TRP ID; or [00373] one or more TCI state indexes corresponding to the CORESET pool index.

[00374] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00375] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00376] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00377] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00378] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00379] According to an embodiment of the present invention, the network device transmits first indication information to the terminal using a first transmit beam to determine a second receive beam to be used by the terminal when the terminal subsequently communicates with the network device. The first receiving beam corresponds to the first TRP or the second TRP, and the second receiving beam corresponds to the second TRP. If the network device uses the second TRP to subsequently transmit indication signaling, the terminal uses the second receive beam to receive the signaling, thereby increasing the probability of successfully receiving the signaling.

[00380] In FIG. 7 is a block diagram of a terminal provided by an embodiment of the present invention. For example, the terminal may be a mobile phone, a computer, a digital radio user device, a messaging device, a game console, a tablet, a medical device, a fitness device, a PDA, etc.

[00381] As shown in FIG. 7, the terminal includes a transceiver 800, a processor 810, and a memory 820.

[00382] Memory 820 is configured to store computer programs, transceiver 800 is configured to transmit and receive data under the control of processor 810, and processor 810 is configured to read computer programs from memory 820 to perform the following operations:

[00383] receiving, using the first reception beam, first indication information transmitted by the network device, the first indication information configured to indicate the second reception beam;

[00384] wherein the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00385] The transceiver 800 is configured to receive and transmit data under the control of the processor 810.

[00386] As shown in FIG. 7, the bus architecture can support any number of interconnected buses and bridges. More specifically, various circuits of one or more processors, represented by processor 810, and storage devices, represented by memory 820, are connected to each other. The bus architecture may also interconnect various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further. The bus interface supports communication between devices. The transceiver 800 may be a plurality of elements, including a transmitter and a receiver, containing units for communicating with various other devices in a transmission medium. The transmission medium includes wireless channel, wired channel, optical fiber, etc. For various user devices, the user interface can also be an interface that allows the required devices to be connected externally or internally.

Connectable devices include, but are not limited to, a keyboard, display, speaker, microphone, joystick, etc.

[00387] Processor 810 is responsible for managing the bus architecture and routine operations, and memory 820 may store data used by processor 810 to perform operations.

[00388] Additionally, the processor 810 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or a complex programmable logic device (FPGA). CPLD, Complex Programmable Logic Device). The 810 processor can support a multi-core architecture.

[00389] Processor 810 is configured to perform any of the methods shown in FIG. 12 and illustrated by embodiments of the present invention, in accordance with executable instructions obtained by calling computer programs stored in memory. Processor 810 and memory 820 may also be physically located separately.

[00390] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00391] As a possible implementation, the first indication information is a first MAC CE;

[00392] wherein the first CE MAC is configured to indicate the ID of the first CORESET associated with the second TRP and the TCI state index corresponding to the initial beam of the second TRP, and the initial beam of the second TRP corresponds to the first CORESET.

[00393] As a possible implementation, the first indication information is a second MAC CE and a first DCI;

[00394] wherein the second CE MAC is configured to indicate a plurality of activated TCIs; And

[00395] The first DCI is configured to indicate a TCL state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of enabled TCI state indexes included in the second CE MAC.

[00396] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or

[00397] the first reception beam corresponds to the second TRP, and the second reception beam corresponds to the updated beam of the second TRP.

[00398] As a possible implementation, the first indication information is a third MAC CE;

[00399] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated ray of the second TRP, and the updated ray of the second TRP corresponds to the second CORESET.

[00400] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00401] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[00402] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00403] As a possible implementation, the plurality of activated TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00404] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[00405] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00406] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00407] As a possible implementation, the terminal is also configured to perform the following operation:

[00408] determining the first receiving beam;

[00409] wherein the first receive beam is the initial receive beam of CORESET CORESET#0 associated with the first TRP.

[00410] As a possible implementation, the terminal is also configured to perform the following operation:

[00411] receiving second indication information using a known reception beam corresponding to the first TRP, wherein the second indication information is configured to determine the first reception beam.

[00412] As a possible implementation, a known receive beam corresponds to CORESET CORESET#0 associated with the first TRP; or the known receive beam corresponds to the third CORESET associated with the first TRP and is indicated by the third indication information transmitted using the CORESET CORESET#0 associated with the first TRP.

[00413] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises one or more TCI state indices corresponding to a TRP ID; or one or more TCI state indexes corresponding to the CORESET pool index.

[00414] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises a plurality of TCI state indices corresponding to a plurality of TRP IDs, wherein each TCI state index corresponds to a TRP ID; or a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, each TCI state index corresponding to a CORESET pool index.

[00415] As an exemplary implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises an indication field corresponding to at least one TCI status index, wherein the indication field is configured to indicate, whether said at least one MAC CE has at least one TCI status index.

[00416] It should be noted that the terminal provided by the embodiment of the present invention can perform all the steps of the methods shown in FIG. 12 and may provide the same technical results, and the same components and advantages set forth in the method embodiments are not further described again.

[00417] In FIG. 8 is a block diagram of a network device provided by an embodiment of the present invention. As shown in FIG. 8, the network device includes a transceiver 900, a processor 910, and a memory 920.

[00418] Memory 920 is configured to store computer programs, transceiver 900 is configured to transmit and receive data under the control of processor 910, and processor 910 is configured to read computer programs from memory 920 to perform the following operations:

[00419] transmitting first indication information to the terminal using the first transmission beam;

[00420] wherein the first indication information is configured to indicate a second reception beam of the terminal, and the first transmit beam corresponds to the first reception beam of the terminal; And

[00421] the first reception beam corresponds to the first TRP or the second TRP, and the second reception beam corresponds to the second TRP.

[00422] The transceiver 900 is configured to receive and transmit data under the control of the processor 910.

[00423] As shown in FIG. 8, the bus architecture can support any number of interconnected buses and bridges. More specifically, various circuits of one or more processors, represented by processor 910, and storage devices, represented by memory 920, are connected to each other. The bus architecture may also interconnect various other circuits, such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further. The bus interface supports communication between devices. The transceiver 900 may be a plurality of elements, including a transmitter and a receiver, containing units for communicating with various other devices in a transmission medium. The transmission medium includes wireless channel, wired channel, optical fiber, etc. Processor 910 is responsible for managing the bus architecture and routine operations, and memory 920 may store data used by processor 910 to perform operations.

[00424] Processor 910 may be a CPU, ASIC, FPGA, or CPLD, and processor 910 may support a multi-core architecture.

[00425] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the start beam of the second TRP.

[00426] As a possible implementation, the first indication information is a first MAC CE that is configured to indicate the ID of a first CORESET associated with a second TRP and a TCI state index corresponding to a start beam of the second TRP, and the start beam of the second TRP corresponds to the first CORESET.

[00427] As a possible implementation, the first indication information is a second MAC CE and a first DCI; wherein the second CE MAC is configured to indicate a plurality of activated TCIs; and the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE.

[00428] As a possible implementation, the first reception beam corresponds to the first TRP, and the second reception beam corresponds to the updated beam of the second TRP; or the first receiving beam corresponds to the second TRP, and the second receiving beam corresponds to the updated beam of the second TRP.

[00429] As a possible implementation, the first indication information is a third MAC CE;

[00430] wherein the third CE MAC is configured to indicate a second CORESET ID associated with the second TRP and a TCI state index corresponding to the updated ray of the second TRP, and the updated ray of the second TRP corresponds to the second CORESET.

[00431] As a possible implementation, the first indication information is a fourth MAC CE and a second DCI;

[00432] wherein the fourth MAC CE is configured to indicate a plurality of activated TCI state indexes; And

[00433] The second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE.

[00434] As a possible implementation, the plurality of TCI state indices carried in the fourth MAC CE includes a TCI state index corresponding to the initial beam of the second TRP.

[00435] As an exemplary implementation, the first DCI and the second DCI include an indication target field, and the indication target field is configured to indicate a TRP ID and/or a CORESET pool index corresponding to the TCI status index.

[00436] As a possible implementation, in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index.

[00437] As a possible implementation, the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the CE MAC that activates the TCI status index.

[00438] As a possible implementation, the first receive beam is the initial receive beam corresponding to CORESET CORESET#0 associated with the first TRP.

[00439] As a possible implementation, the network device is also configured to perform the following operation:

[00440] transmitting second indication information to the terminal using a transmit beam corresponding to a known receive beam of the terminal;

[00441] wherein the second indication information is configured to indicate the first reception beam of the terminal, and the known reception beam corresponds to the first TRP.

[00442] As a possible implementation, a known receive beam corresponds to a CORESET CORESET#0 associated with the first TRP, or a known receive beam corresponds to a third CORESET associated with the first TRP and is indicated by third indication information transmitted using the CORESET CORESET#0 associated with first TRP.

[00443] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00444] one or more TCI state indices corresponding to the TRP ID; or

[00445] one or more TCI state indexes corresponding to the CORESET pool index.

[00446] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00447] a plurality of TCI state indexes corresponding to a plurality of TRP IDs, each TCI state index corresponding to a TRP ID; or

[00448] a plurality of TCI state indices corresponding to a plurality of CORESET pool indices, with each TCI state index corresponding to a CORESET pool index.

[00449] As a possible implementation, at least one CE MAC of the first CE MAC, second CE MAC, third CE MAC, and fourth CE MAC comprises:

[00450] an indication field corresponding to the at least one TCI status index, wherein the indication field is configured to indicate whether the at least one CE MAC has at least one TCI status index.

[00451] It should be noted that the above network device represented by the embodiment of the present invention is capable of implementing all steps of the methods shown above with reference to FIGS. 3-4, and may provide the same technical results, and the same components and advantages corresponding to the embodiments of the methods are not further described again.

[00452] To implement the above embodiments, a communication system is also provided within the scope of the present invention.

[00453] According to an embodiment of the present invention, there is also provided a communication system comprising a terminal and a network device. The terminal is capable of implementing the beam indicating method described in FIG. 1-2, the network device is capable of implementing the beam indicating method described in FIG. 3-4.

[00454] To implement the above embodiments, a computer-readable medium is also provided within the scope of the disclosure of the present invention.

[00455] In accordance with an embodiment of the present invention, there is provided a computer-readable medium on which executable programs are stored. When executing programs by the processor, the above method is performed, for example, at least the method shown in any of FIGS. 1-4.

[00456] To implement the above embodiments, a computer program product is also provided within the scope of the disclosure of the present invention.

[00457] An embodiment of the present invention provides a computer program product. When executing programs by the processor, the above method is performed, for example, at least the method shown in any of FIGS. 1-4.

[00458] Other embodiments of the present invention will be apparent to one skilled in the art based on consideration of this description and practice of the disclosed invention. This application is intended to cover any changes, uses, or adaptations of the disclosure of the present invention consistent with its basic principles, including such departures from the disclosure of the present invention as are known or customary practice in the art. This description and illustrations are to be considered as examples only, with the spirit and scope of the present invention being defined by the following claims.

[00459] It should be appreciated that the disclosure of the present invention is not limited to exactly the same as set forth above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the spirit of the present invention. The scope of the present invention is intended to be defined only by the appended claims.

Claims (49)

1. A method of indicating a beam performed by a terminal, including: receiving (101, 202), using the first reception beam, first indication information transmitted by the network device, the first indication information indicating the second reception beam; wherein the first receive beam corresponds to the first transceiver point (TRP) or the second TRP, and the second receive beam corresponds to the second TRP, wherein the second receive beam is configured for at least two transmissions of a physical downlink control channel (PDCCH), a physical shared channel downlink (PDSCH), physical uplink shared channel (PUSCH) and physical uplink control channel (PUCCH). 2. The method of claim 1, wherein the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the initial beam of the second TRP. 3. The method of claim 2, wherein the first indication information is a first media access control element (MAC CE); wherein the first MAC CE is configured to indicate a first control resource set (CORESET) identifier (ID) associated with the second TRP and a transmission configuration indicator (TCI) status index corresponding to the initial beam of the second TRP, wherein the initial beam of the second TRP corresponds to the first CORESET . 4. The method of claim 2, wherein the first indication information is a second MAC CE and a first downlink control information (DCI); wherein the second MAC CE is configured to indicate a plurality of activated TCIs; And the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE. 5. The method according to claim 1, wherein the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the updated beam of the second TRP; or the first receive beam corresponds to the second TRP and the second receive beam corresponds to the updated beam of the second TRP. 6. The method according to claim 5, wherein the first indication information is a third MAC CE; wherein the third MAC CE is configured to indicate a second CORESET ID associated with the second TRP and a TCI status index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET. 7. The method of claim 5, wherein the first indication information is a fourth MAC CE and a second DCI; wherein the fourth MAC CE is configured to indicate a plurality of activated TCIs; And the second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE. 8. The method according to claim 4 or 7, wherein in the first DCI and in the second DCI, each TCI state index corresponds to a predefined TRP ID and/or CORESET pool index. 9. The method of claim 4 or 7, wherein the TRP ID and/or CORESET pool index corresponding to the TCI status index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the MAC CE, which activates the TCI status index. 10. A method of indicating a beam performed by a network device and including: transmitting (301, 402) to the terminal first indication information using the first transmission beam; wherein the first indication information indicates a second receiving beam of the terminal, and the first transmitting beam corresponds to the first receiving beam of the terminal; And the first receiving beam corresponds to the first transceiver point (TRP) or the second TRP, and the second receiving beam corresponds to the second TRP, wherein the second receiving beam is configured for at least two transmissions of a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), and a physical uplink control channel (PUCCH). 11. The method of claim 10, wherein the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the initial beam of the second TRP. 12. The method of claim 11, wherein the first indication information is a first media access control element (MAC CE), wherein the first MAC CE is configured to indicate a first control resource set (CORESET) identifier (ID) associated with the second TRP and a transmission configuration indicator (TCI) status index corresponding to the initial beam of the second TRP, wherein the initial beam of the second TRP corresponds to the first CORESET . 13. The method of claim 11, wherein the first indication information is a second MAC CE and a first downlink control information (DCI); wherein the second MAC CE is configured to indicate a plurality of activated TCIs; And the first DCI is configured to indicate a TCI state index corresponding to the initial beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the second MAC CE. 14. The method of claim 10, wherein the first receiving beam corresponds to the first TRP and the second receiving beam corresponds to the updated beam of the second TRP; or the first receive beam corresponds to the second TRP and the second receive beam corresponds to the updated beam of the second TRP. 15. The method of claim 14, wherein the first indication information is a third MAC CE; wherein the third MAC CE is configured to indicate a second CORESET ID associated with the second TRP and a TCI status index corresponding to the updated beam of the second TRP, and the updated beam of the second TRP corresponds to the second CORESET. 16. The method of claim 14, wherein the first indication information is a fourth MAC CE and a second DCI; wherein the fourth MAC CE is configured to indicate a plurality of activated TCIs; And the second DCI is configured to indicate a TCI state index corresponding to the updated beam of the second TRP, and the TCI state index is one of a plurality of activated TCI state indexes included in the fourth MAC CE. 17. The method of claim 13 or 16, wherein in the first DCI and in the second DCI, each TCI status index corresponds to a predefined TRP ID and/or CORESET pool index. 18. The method of claim 13 or 16, wherein the TRP ID and/or CORESET pool index corresponding to the TCI state index in either the first DCI or the second DCI is the TRP ID and/or CORESET pool index indicated by the MAC CE that activates the TCI status index. 19. A terminal for communication with a network device, containing: memory and processor; wherein the memory is configured to store computer programs, and the processor is configured to read computer programs in memory to perform the method of any one of claims. 1-9. 20. Network device for communication with the terminal, containing: memory and processor; wherein the memory is configured to store computer programs, and the processor is configured to read the computer programs in the memory to perform the method of any one of claims. 10-18. 21. A machine-readable medium on which machine-readable instructions are stored, upon execution of which the processor implements the method according to any one of claims. 1-9. 22. A machine-readable medium on which machine-readable instructions are stored, upon execution of which the processor implements the method according to any one of claims. 10-18.