CN117596707B

CN117596707B - Communication method, terminal, network device, system and storage medium

Info

Publication number: CN117596707B
Application number: CN202410082578.XA
Authority: CN
Inventors: 江小威; 陈波
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2024-01-19
Filing date: 2024-01-19
Publication date: 2024-06-04
Anticipated expiration: 2044-01-19
Also published as: CN117596707A

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a system, and a storage medium. The method comprises the following steps: receiving a random access channel RACH configuration sent by a network device, and sending auxiliary information to the network device according to the RACH configuration, wherein the auxiliary information is used for indicating the network device to determine the retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information comprises: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, by configuring the RACH resources to the terminal by the network equipment, compared with the resources which are not determined for transmission, the realization of effective transmission of the auxiliary information is ensured by different RACH resources, and furthermore, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, thereby improving the downlink coverage performance of the network equipment.

Description

Communication method, terminal, network device, system and storage medium

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a communications method, a terminal, a network device, a system, and a storage medium.

Background

For NTN (Non-TERRESTRIAL NETWORK, non-terrestrial) networks, the problem of downlink coverage is more serious than that of TN (TERRESTRIAL NETWORK, terrestrial) networks due to the higher satellite-to-ground height, and an enhancement scheme of downlink coverage needs to be set to ensure the communication quality. The random access downlink information is used as one of the downlink messages, and under the application scene, the coverage problem exists, so that the random access of the terminal is blocked, and the communication performance of the terminal is affected.

Disclosure of Invention

In order to overcome the downlink coverage problem of random access information in the related art, the disclosure provides a communication method, a terminal, a network device, a system and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a communication method performed by a terminal, the method comprising:

receiving Random Access Channel (RACH) configuration sent by network equipment;

According to the RACH configuration, transmitting auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

According to a second aspect of embodiments of the present disclosure, there is provided a communication method performed by a network device, the method comprising:

Transmitting RACH configuration to a terminal, where the RACH configuration is configured to instruct the terminal to transmit auxiliary information to the network device according to the RACH configuration, where the auxiliary information is configured to instruct the network device to determine retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

According to a third aspect of embodiments of the present disclosure, there is provided a communication method, the method comprising:

the network equipment sends RACH configuration to the terminal;

the terminal sends auxiliary information to the network equipment according to RACH configuration;

the network device determines retransmission times of first downlink access information according to the auxiliary information, wherein the first downlink access information comprises: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

According to a fourth aspect of embodiments of the present disclosure, there is provided a terminal comprising:

a first transceiver module configured to receive a random access channel RACH configuration transmitted by a network device;

A first processing module configured to send auxiliary information to the network device according to the RACH configuration, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

According to a fifth aspect of embodiments of the present disclosure, there is provided a network device comprising:

the second transceiver module is configured to send RACH configuration to a terminal, where the RACH configuration is used to instruct the terminal to send auxiliary information to the network device according to the RACH configuration, the auxiliary information is used to instruct the network device to determine retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

According to a sixth aspect of embodiments of the present disclosure, there is provided a terminal, comprising:

One or more processors;

wherein the terminal is configured to perform the communication method according to any one of the first aspects of the present disclosure.

According to a seventh aspect of embodiments of the present disclosure, there is provided a network device comprising:

One or more processors;

wherein the network device is configured to perform the communication method of any one of the second aspects of the present disclosure.

According to an eighth aspect of embodiments of the present disclosure, there is provided a communication system comprising a terminal configured to implement the communication method of any one of the first aspects of the present disclosure and a network device configured to implement the communication method of any one of the second aspects of the present disclosure.

According to a ninth aspect of embodiments of the present disclosure, there is provided a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method according to any one of the first aspects of the present disclosure, or cause the communication device to perform the communication method according to any one of the second aspects of the present disclosure.

In the above technical solution, a random access channel RACH configuration sent by a network device is received, and according to the RACH configuration, auxiliary information is sent to the network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, RACH resources are configured to the terminal through the network equipment, compared with the resources which are not determined for transmission, the realization of effective transmission of the auxiliary information is guaranteed through different RACH resources, and further, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, so that the downlink coverage performance of the network equipment is improved.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following description of the embodiments refers to the accompanying drawings, which are only some embodiments of the present disclosure, and do not limit the protection scope of the present disclosure in any way.

Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure.

Fig. 2 is an interactive schematic diagram of a communication method shown in accordance with an embodiment of the present disclosure.

Fig. 3 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure.

Fig. 4 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure.

Fig. 5 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure.

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

Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.

Fig. 8 is a schematic structural diagram of a communication device 8100 according to an embodiment of the present disclosure.

Fig. 9 is a schematic structural diagram of a chip 8200 according to an embodiment of the present disclosure.

Detailed Description

The embodiment of the disclosure provides a communication method, a terminal, network equipment, a system and a storage medium.

In a first aspect, an embodiment of the present disclosure proposes a communication method, performed by a terminal, the method including:

receiving Random Access Channel (RACH) configuration sent by network equipment;

In combination with some embodiments of the first aspect, the number of retransmissions includes a number of physical downlink control channel PDCCH retransmissions and/or a number of physical downlink shared channel PDSCH retransmissions.

With reference to some embodiments of the first aspect, the RACH configuration includes at least one of:

dedicated RACH resource configuration information supporting a characteristic combination of the first downlink access information;

Common RACH resource configuration information supporting a combination of characteristics of the first downlink access information.

With reference to some embodiments of the first aspect, the combination of features includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

packet data, wherein the data scale of the packet data is smaller than the set scale;

Network slice automation and service management NSAG.

With reference to some embodiments of the first aspect, the combination of features includes information element IE information, the IE information being used to indicate at least one of:

the Msg2 retransmission;

the Msg4 retransmission;

the Msg2 and the Msg4 retransmissions;

Said Msg2 and said MsgB retransmissions;

The Msg2, the Msg4, and the MsgB retransmissions.

With reference to some embodiments of the first aspect, the RACH configuration includes indication information, the indication information is used to indicate at least one of:

the RACH configuration corresponds to the retransmission times of the first downlink access information;

the RACH configures a Reference Signal Received Power (RSRP) interval corresponding to the RACH;

and configuring a corresponding channel quality indication CQI interval by the RACH.

With reference to some embodiments of the first aspect, the combination of features includes IE information, and the IE information includes the indication information.

With reference to some embodiments of the first aspect, the RACH configuration employs a shared random access occasion, RO, configuration and/or a separate RO configuration.

With reference to some embodiments of the first aspect, the RACH configuration employs the shared RO configuration, the RACH configuration supporting at least one of:

A first combination of characteristics including at least one of the Msg2 retransmission, the Msg4 retransmission, the MsgB retransmission;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first sharing parameter, the sharing parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

With reference to some embodiments of the first aspect, the RACH configuration employs the separate RO configuration, the RACH configuration supporting at least one of:

the retransmission times of the first downlink access information;

the RSRP interval;

The CQI interval;

A second sharing parameter, the sharing parameter comprising at least one of:

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

SSB corresponds to the number of control information block CB preamble sequences and the reference signal power threshold of SUL frequency band SSB;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

With reference to some embodiments of the first aspect, the RACH configuration includes a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure.

With reference to some embodiments of the first aspect, the RACH configuration includes the first RACH resource configuration, and the first RACH resource configuration includes a RACH common configuration for indicating a RACH resource configuration of the first downlink access information retransmission.

With reference to some embodiments of the first aspect, the RACH configuration includes the second RACH resource configuration, the second RACH resource configuration includes a non-contention random access request information MsgA common configuration, and the MsgA common configuration is used to indicate RACH resource configuration of the first downlink access information retransmission.

With reference to some embodiments of the first aspect, the RACH configuration includes a third RACH resource configuration of a contention random access CBRA and/or a fourth RACH resource configuration of a non-contention random access CFRA.

With reference to some embodiments of the first aspect, the RACH configuration includes the fourth RACH resource configuration, and the CFRA includes a PDCCH protocol triggered CFRA.

With reference to some embodiments of the first aspect, the RACH configuration includes the fourth RACH resource configuration, the CFRA includes a primary-secondary cell change triggered CFRA, and the primary-secondary cell change includes at least one of a primary-secondary cell handover, a primary-secondary cell addition, and a primary-secondary cell change.

In combination with some embodiments of the first aspect, the fourth RACH resource configuration employs a shared RO configuration and/or employs a separate RO configuration with a CFRA-RACH configuration of PRACH transmissions.

With reference to some embodiments of the first aspect, the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two-step procedure-IE information.

With reference to some embodiments of the first aspect, the RACH configuration includes the fourth RACH resource configuration, and the CFRA includes a beam failure recovery BFR triggered CFRA.

With reference to some embodiments of the first aspect, the fourth RACH resource configuration includes at least one of:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

With reference to some embodiments of the first aspect, the RACH configuration includes the third RACH resource configuration including a CBRA configuration of BFR.

With reference to some embodiments of the first aspect, the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

With reference to some embodiments of the first aspect, the RACH configuration includes the third RACH resource configuration including a CBRA configuration for primary-secondary cell change including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change.

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

With reference to some embodiments of the first aspect, the RACH configuration includes a RACH resource configuration required by a serial interface SI.

In combination with some embodiments of the first aspect, RACH resource configuration of the SI requirements:

RACH resource allocation of the retransmission times corresponding to SI requirements;

RACH resource allocation of the corresponding SI requirement of the RSRP interval;

the CQI interval corresponds to RACH resource configuration of SI requirements.

With reference to some embodiments of the first aspect, the RACH configuration includes characteristic priority information of the first downlink access information.

With reference to some embodiments of the first aspect, the number of retransmissions, the RSRP interval, or the CQI interval under the combination of characteristics have the same priority.

In a second aspect, embodiments of the present disclosure propose a communication method performed by a network device, the method comprising:

With reference to some embodiments of the second aspect, the number of retransmissions includes a number of physical downlink control channel PDCCH retransmissions and/or a number of physical downlink shared channel PDSCH retransmissions.

With reference to some embodiments of the second aspect, the RACH configuration includes at least one of:

With reference to some embodiments of the second aspect, the combination of features includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

Network slice automation and service management NSAG.

With reference to some embodiments of the second aspect, the combination of features includes information element, IE, information indicating at least one of:

the Msg2 retransmission;

the Msg4 retransmission;

the Msg2 and the Msg4 retransmissions;

Said Msg2 and said MsgB retransmissions;

The Msg2, the Msg4, and the MsgB retransmissions.

With reference to some embodiments of the second aspect, the RACH configuration includes indication information, the indication information being used to indicate at least one of:

With reference to some embodiments of the second aspect, the combination of features includes IE information, the IE information including the indication information.

With reference to some embodiments of the second aspect, the RACH configuration employs a shared random access occasion, RO, configuration and/or a separate RO configuration.

With reference to some embodiments of the second aspect, the RACH configuration employs the shared RO configuration, the RACH configuration supporting at least one of:

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first sharing parameter, the sharing parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

With reference to some embodiments of the second aspect, the RACH configuration employs the separate RO configuration, the RACH configuration supporting at least one of:

the retransmission times of the first downlink access information;

the RSRP interval;

The CQI interval;

A second sharing parameter, the sharing parameter comprising at least one of:

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

With reference to some embodiments of the second aspect, the RACH configuration includes a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure.

With reference to some embodiments of the second aspect, the RACH configuration includes the first RACH resource configuration, and the first RACH resource configuration includes a RACH common configuration for indicating a RACH resource configuration of the first downlink access information retransmission.

With reference to some embodiments of the second aspect, the RACH configuration includes the second RACH resource configuration, the second RACH resource configuration includes a non-contention random access request information MsgA common configuration, and the MsgA common configuration is used to indicate RACH resource configuration of the first downlink access information retransmission.

With some embodiments of the second aspect, the RACH configuration includes a third RACH resource configuration of a contention random access CBRA and/or a fourth RACH resource configuration of a non-contention random access CFRA.

With reference to some embodiments of the second aspect, the RACH configuration includes the fourth RACH resource configuration, and the CFRA includes a PDCCH protocol triggered CFRA.

With reference to some embodiments of the second aspect, the RACH configuration includes the fourth RACH resource configuration, the CFRA includes a primary-secondary cell change triggered CFRA, and the primary-secondary cell change includes at least one of a primary-secondary cell handover, a primary-secondary cell addition, and a primary-secondary cell change.

With some embodiments of the second aspect, the fourth RACH resource configuration employs a shared RO configuration and/or employs a separate RO configuration with a CFRA-RACH configuration of PRACH transmissions.

With reference to some embodiments of the second aspect, the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two-step procedure-IE information.

With reference to some embodiments of the second aspect, the RACH configuration includes the fourth RACH resource configuration, and the CFRA includes a beam failure recovery BFR triggered CFRA.

With reference to some embodiments of the second aspect, the fourth RACH resource configuration includes at least one of:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

With reference to some embodiments of the second aspect, the RACH configuration includes the third RACH resource configuration including a CBRA configuration of BFR.

With reference to some embodiments of the second aspect, the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

With reference to some embodiments of the second aspect, the RACH configuration includes the third RACH resource configuration including a CBRA configuration for primary-secondary cell change including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change.

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

With reference to some embodiments of the second aspect, the RACH configuration includes a RACH resource configuration required by a serial interface SI.

With reference to some embodiments of the second aspect, RACH resource configuration of the SI requirement:

the CQI interval corresponds to RACH resource configuration of SI requirements.

With reference to some embodiments of the second aspect, the RACH configuration includes characteristic priority information of the first downlink access information.

With reference to some embodiments of the second aspect, the number of retransmissions, the RSRP interval, or the CQI interval under the combination of characteristics have the same priority.

In a third aspect, embodiments of the present disclosure provide a communication method, the method including:

the network equipment sends RACH configuration to the terminal;

In a fourth aspect, an embodiment of the present disclosure provides a terminal, including:

In a fifth aspect, embodiments of the present disclosure provide a network device, including:

In a sixth aspect, an embodiment of the present disclosure provides a terminal, including:

One or more processors;

In a seventh aspect, embodiments of the present disclosure provide a network device, including:

One or more processors;

In an eighth aspect, an embodiment of the present disclosure provides a communication system, including a terminal configured to implement the communication method of any one of the first aspects of the present disclosure, and a network device configured to implement the communication method of any one of the second aspects of the present disclosure.

In a ninth aspect, the presently disclosed embodiments provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method of any one of the first aspects of the present disclosure or cause the communication device to perform the communication method of any one of the second aspects of the present disclosure.

In this way, the random access channel RACH configuration sent by the network device is received, and according to the RACH configuration, auxiliary information is sent to the network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, the network equipment configures RACH resources to the terminal, auxiliary information is transmitted through different RACH resources, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, and the downlink coverage performance of the network equipment is improved.

The embodiment of the disclosure provides a communication method, a terminal, network equipment, a system and a storage medium. In some embodiments, terms of a communication method and an information processing method, a communication method, and the like may be replaced with each other, terms of a communication device and an information processing device, a communication device, and the like may be replaced with each other, and terms of an information processing system, a communication system, and the like may be replaced with each other.

The embodiments of the present disclosure are not intended to be exhaustive, but rather are exemplary of some embodiments and are not intended to limit the scope of the disclosure. In the case of no contradiction, each step in a certain embodiment may be implemented as an independent embodiment, and the steps may be arbitrarily combined, for example, a scheme in which part of the steps are removed in a certain embodiment may also be implemented as an independent embodiment, the order of the steps in a certain embodiment may be arbitrarily exchanged, and further, alternative implementations in a certain embodiment may be arbitrarily combined; furthermore, various embodiments may be arbitrarily combined, for example, some or all steps of different embodiments may be arbitrarily combined, and an embodiment may be arbitrarily combined with alternative implementations of other embodiments.

In the various embodiments of the disclosure, terms and/or descriptions of the various embodiments are consistent throughout the various embodiments and may be referenced to each other in the absence of any particular explanation or logic conflict, and features from different embodiments may be combined to form new embodiments in accordance with their inherent logic relationships.

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In the presently disclosed embodiments, elements that are referred to in the singular, such as "a," "an," "the," "said," etc., may mean "one and only one," or "one or more," "at least one," etc., unless otherwise indicated. For example, where an article (article) is used in translation, such as "a," "an," "the," etc., in english, a noun following the article may be understood as a singular expression or as a plural expression.

In the presently disclosed embodiments, "plurality" refers to two or more.

In some embodiments, terms such as "at least one of", "one or more of", "multiple of" and the like may be substituted for each other.

In some embodiments, "A, B" at least one of "," a and/or B "," a in one case, B in another case "," a in response to one case, B "in response to another case, etc., may include the following technical solutions, as appropriate: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments, execution is selected from a and B (a and B are selectively executed); in some embodiments a and B (both a and B are performed). Similar to the above when there are more branches such as A, B, C.

In some embodiments, the description modes such as "a or B" may include the following technical schemes according to circumstances: in some embodiments a (a is performed independently of B); b (B is performed independently of a) in some embodiments; in some embodiments execution is selected from a and B (a and B are selectively executed). Similar to the above when there are more branches such as A, B, C.

The prefix words "first", "second", etc. in the embodiments of the present disclosure are only for distinguishing different description objects, and do not limit the location, order, priority, number, content, etc. of the description objects, and the statement of the description object refers to the claims or the description of the embodiment context, and should not constitute unnecessary limitations due to the use of the prefix words. For example, if the description object is a "field", the ordinal words before the "field" in the "first field" and the "second field" do not limit the position or the order between the "fields", and the "first" and the "second" do not limit whether the "fields" modified by the "first" and the "second" are in the same message or not. For another example, describing an object as "level", ordinal words preceding "level" in "first level" and "second level" do not limit priority between "levels". As another example, the number of descriptive objects is not limited by ordinal words, and may be one or more, taking "first device" as an example, where the number of "devices" may be one or more. Furthermore, objects modified by different prefix words may be the same or different, e.g., the description object is "a device", then "a first device" and "a second device" may be the same device or different devices, and the types may be the same or different; for another example, the description object is "information", and the "first information" and the "second information" may be the same information or different information, and the contents thereof may be the same or different.

In some embodiments, "comprising a", "containing a", "for indicating a", "carrying a", may be interpreted as carrying a directly, or as indicating a indirectly.

In some embodiments, terms such as "time/frequency", "time-frequency domain", and the like refer to the time domain and/or the frequency domain.

In some embodiments, the terms "responsive to … …", "responsive to determination … …", "in the case of … …", "at … …", "when … …", "if … …", "if … …", and the like may be interchanged.

In some embodiments, terms "greater than", "greater than or equal to", "not less than", "more than or equal to", "not less than", "above" and the like may be interchanged, and terms "less than", "less than or equal to", "not greater than", "less than or equal to", "not more than", "below", "lower than or equal to", "no higher than", "below" and the like may be interchanged.

In some embodiments, an apparatus or the like may be interpreted as an entity, or may be interpreted as a virtual, and the names thereof are not limited to the names described in the embodiments, "apparatus," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip system," "entity," "body," and the like may be replaced with each other.

In some embodiments, a "network" may be interpreted as an apparatus (e.g., access network device, core network device, etc.) contained in a network.

In some embodiments, "access network device (access network device, AN device)", "radio access network device (radio access network device, RAN DEVICE)", "Base Station (BS)", "radio base station (radio base station)", "fixed station (fixed station)", "node(s)", "access point (access point)", "transmit point (transmission point, TP)", "Receive Point (RP)", "transmit and/or receive point (transmit/receive point), the terms TRP), panel, antenna panel (ANTENNA PANEL), antenna array (ANTENNA ARRAY), cell (cell), macro cell (macro cell), small cell (SMALL CELL), femto cell (femto cell), pico cell, sector (sector), cell group (cell group), serving cell, carrier, component carrier (component carrier), bandwidth part (BWP) and the like may be replaced with each other.

In some embodiments, terms such as "terminal" (terminal) "," terminal device (TERMINAL DEVICE) "," User Equipment (UE) "," user terminal "(MS)", "Mobile Station (MS)", mobile Terminal (MT) ", subscriber station (subscriber station), mobile unit (mobile unit), subscriber unit (subscriber unit), wireless unit (wireless unit), remote unit (remote unit), mobile device (mobile device), wireless device (WIRELESS DEVICE), wireless communication device (wireless communication device), remote device (remote device), mobile subscriber station (mobile subscriber station), access terminal (ACCESS TERMINAL), mobile terminal (mobile terminal), wireless terminal (WIRELESS TERMINAL), remote terminal (remote terminal), handheld device (handset), user agent (user agent), mobile client (mobile client), and the like may be used interchangeably.

In some embodiments, the access network device, core network device, or network device may be replaced with a terminal. For example, the embodiments of the present disclosure may also be applied to a configuration in which an access network device, a core network device, or communication between a network device and a terminal is replaced with communication between a plurality of terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), or the like). In this case, the terminal may have all or part of the functions of the access network device. In addition, terms such as "uplink", "downlink", and the like may be replaced with terms corresponding to communication between terminals (e.g., "side)". For example, uplink channels, downlink channels, etc. may be replaced with side-uplink channels, uplink, downlink, etc. may be replaced with side-downlink channels.

In some embodiments, the terminal may be replaced with an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have all or part of the functions of the terminal.

In some embodiments, the acquisition of data, information, etc. may comply with laws and regulations of the country of locale.

In some embodiments, data, information, etc. may be obtained after user consent is obtained.

Furthermore, each element, each row, or each column in the tables of the embodiments of the present disclosure may be implemented as a separate embodiment, and any combination of elements, any rows, or any columns may also be implemented as a separate embodiment.

Fig. 1 is a schematic architecture diagram of a communication system shown in accordance with an embodiment of the present disclosure. As shown in fig. 1, the communication system 100 includes a terminal (terminal) 101 and a network device 102.

In some embodiments, the terminal 101 includes at least one of, for example, a mobile phone (mobile phone), a wearable device, an internet of things device, a communication enabled car, a smart car, a tablet (Pad), a wireless transceiver enabled computer, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (SMART GRID), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (SMART CITY), a wireless terminal device in smart home (smart home), but is not limited thereto.

In some embodiments, the network device 102 is, for example, a node or device that accesses a terminal to a wireless network, and the access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (next generation eNB, ng-eNB), a next generation NodeB (next generation NodeB, gNB), a NodeB (node B, NB), a Home NodeB (HNB), a home NodeB (home evolved nodeB, heNB), a wireless backhaul device, a radio network controller (radio network controller, RNC), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a baseband unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open base station (Open RAN), a Cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are applicable to similar technical problems.

The embodiments of the present disclosure described below may be applied to the communication system 100 shown in fig. 1, or a part of the main body, but are not limited thereto. The respective bodies shown in fig. 1 are examples, and the communication system may include all or part of the bodies in fig. 1, or may include other bodies than fig. 1, and the number and form of the respective bodies may be arbitrary, and the respective bodies may be physical or virtual, and the connection relationship between the respective bodies is examples, and the respective bodies may not be connected or may be connected, and the connection may be arbitrary, direct connection or indirect connection, or wired connection or wireless connection.

Embodiments of the present disclosure may be applied to long term evolution (Long Term Evolution, LTE), LTE-Advanced (LTE-a), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, fourth generation mobile communication system (4th generation mobile communication system,4G)), fifth generation mobile communication system (5th generation mobile communication system,5G), 5G New air interface (New Radio, NR), future Radio access (Future Radio Access, FRA), new Radio access technology (New-Radio Access Technology, RAT), new Radio (New Radio, NR), new Radio access (New Radio access, NX), future generation Radio access (Future generation Radio access, FX), global System for Mobile communications (GSM (registered trademark)), CDMA2000, ultra mobile broadband (Ultra Mobile Broadband, UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, ultra-WideBand (UWB), bluetooth (registered trademark)), land public mobile network (Public Land Mobile Network, PLMN) network, device-to-Device (D2D) system, machine-to-machine (Machine to Machine, M2M) system, internet of things (Internet of Things, ioT) system, vehicle-to-eventing (V2X), system utilizing other communication methods, next generation system extended based on them, and the like. In addition, a plurality of system combinations (e.g., LTE or a combination of LTE-a and 5G, etc.) may be applied.

In some embodiments, the Random access performance of the terminal is improved by improving the downlink coverage of the message, and NR (New Radio, new air interface) supports configuring different PRACH (Physical Random ACCESS CHANNEL ) resources for different combinations of characteristics. The combination of characteristics includes at least one of: msg3 retransmission, msg1 retransmission, redCap (Reduced capability, performance degradation), SMALL DATA (small packet data), NSAG (Networkslice AS group, network slice automation and service management). The cost in the random access process is reduced through the characteristic combination, so that the downlink coverage performance of downlink access information in the network equipment is improved, and the random access capability of the terminal is improved.

In some embodiments, to improve downlink coverage of Msg2/Msg4/MsgB, downlink coverage performance may be improved by retransmission of Msg2/Msg 4/MsgB. In order for the network to be able to determine the number of retransmissions of Msg2/Msg4/MsgB, the UE is required to report assistance information to assist the network in determining the repetition. The auxiliary information may include at least one of: downlink signal quality, e.g. CQI (Channel Quality Indicator, channel quality indication) or downlink reference point RSRP (REFERENCE SIGNAL RECEIVING Power/REFERENCE SIGNAL RECEIVED Power, reference signal received Power); suggesting retransmission times; capability information of the UE, the capability information being used to indicate whether the UE supports Msg2/Msg4/MsgB retransmission. The terminal may transmit the assistance information through contention random access request information Msg1 or non-contention random access request information MsgA, for example.

Fig. 2 is an interactive schematic diagram of a communication method shown in accordance with an embodiment of the present disclosure. As shown in fig. 2, an embodiment of the present disclosure relates to a communication method, which is performed by a terminal and a network device, the method including:

in step S2101, the network device transmits a RACH configuration to the terminal.

In some embodiments, the RACH configuration is used to instruct the terminal to report assistance information according to the RACH configuration.

In some embodiments, the auxiliary information includes at least one of:

Downlink signal quality;

suggesting retransmission times;

capability information, the capability information is used for indicating whether the terminal supports retransmission of the first downlink access information.

In some embodiments, the terminal and the network device are configured with a direct correspondence between the auxiliary information and the RACH configuration, and the terminal uploads the auxiliary information by adopting corresponding RACH configuration resources according to different auxiliary information.

In some embodiments, the number of retransmissions includes a PDCCH number of retransmissions and/or a PDSCH number of retransmissions. For example, the retransmission of the first downlink access information may include a PDCCH retransmission of Msg2/Msg4/MsgB and/or a PDSCH retransmission of Msg2/Msg 4/MsgB.

In some embodiments, the RACH configuration includes at least one of:

For example, the RACH configuration information includes dedicated RACH resource configuration information supporting a combination of characteristics of Msg2/Msg4/MsgB and/or common RACH resource configuration information supporting a combination of characteristics of Msg2/Msg 4/MsgB.

In some embodiments, the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

Network slice automation and service management NSAG.

By way of example, the characteristic combination is used to increase portability of communication information in the random access process and improve downlink coverage performance of the network device. In the network device and the terminal of the present embodiment, the characteristic combination may include: msg3 retransmission, msg1 retransmission, reduced communication performance, packet data, and NSAG slice communication. By means of characteristic combination, consumption in the communication process is reduced, communication overhead is reduced, response capability of network equipment and terminals is improved, and coverage performance of the network equipment is enhanced.

In some embodiments, the combination of characteristics includes information element IE information indicating at least one of:

Msg2 retransmission;

msg4 retransmission;

msg2 and Msg4 retransmissions;

Msg2 and MsgB retransmissions;

Msg2, msg4 and MsgB retransmissions.

For example, IE (Information element ) information is added to the characteristic combination, where the IE information is used to indicate retransmission combinations of multiple downlink access information, for example: msg2 retransmission, msg4 retransmission, msg2+msg4 retransmission, msg2+ MsgB retransmission, msg2+msg4+ MsgB retransmission.

In some embodiments, the RACH configuration includes indication information for indicating at least one of:

RACH configuration corresponds to the retransmission times of the first downlink access information;

configuring a Reference Signal Received Power (RSRP) interval corresponding to the RACH;

the RACH configures a corresponding channel quality indicator CQI interval.

For example, in this embodiment, different RACH resources are configured for different retransmission times/RSRP intervals/CQI intervals. The network device indicates the number of retransmissions, RSRP interval or CQI interval of the RACH configuration corresponding to the first downlink access information through the indication information. That is, different RACH configurations correspond to different retransmission times or RSRP intervals or CQI intervals, and the current retransmission times or RSRP intervals or RACH configurations corresponding to the CQI intervals are indicated by the indication information.

In some embodiments, the combination of characteristics includes IE information, the IE information including indication information. For example, in this embodiment, the indication information may be included in the IE information of the characteristic combination corresponding preamble, and the IE information may be indicated by the characteristic combination preamble.

In some embodiments, the network device may configure the plurality of terminals to have the same characteristic combination, but the number of retransmissions or RACH configurations corresponding to the RSRP interval or the CQI interval are different under the same characteristic combination.

In some embodiments, the RACH configuration employs a shared random access occasion, RO, configuration and/or a separate RO configuration. By way of example, the RACH configuration configured by the network device in this embodiment may support sharing of RO configuration with other RACH configurations; or the RACH configuration of the network device configuration employs a separate RO configuration.

In some embodiments, the RACH configuration employs a shared RO configuration that supports at least one of:

a first combination of characteristics including at least one of an Msg2 retransmission, an Msg4 retransmission, and a MsgB retransmission;

retransmission of the first downlink access information;

RSRP intervals;

A CQI interval;

A first sharing parameter, the first sharing parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

By way of example, the RACH configuration in this embodiment shares the RO configuration with other RACH configurations. When the RACH configuration employs a shared RO configuration, the RACH configuration supports at least one of: retransmission of the first downlink access information, RSRP interval, CQI interval. Or share the first shared parameter with other RACH configurations. The first shared parameter includes at least one of: the method comprises the steps of preamble target receiving power, power increasing step length, maximum transmission times of the preamble, response receiving window, SSB resource index of a system synchronization block, SUL signal strength threshold of a supplementary uplink, preamble initial offset, preamble number, A group preamble sequence number, B group power offset value and A group available random access preamble sequence number. The first sharing parameter is helpful to enable the terminal and the network equipment to better cooperate and coordinate in the network optimization process, and the uniformity and consistency of network performance are ensured. The first shared parameter is typically used in radio frequency planning and optimization to ensure that network coverage, signal quality, interference suppression, etc. are managed and optimized effectively. By sharing these parameters, corresponding adjustments can be made in the respective areas to improve overall network performance and coverage.

In some embodiments, the RACH configuration employs a separate RO configuration, which supports at least one of:

The retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

A second sharing parameter, the second sharing parameter comprising at least one of:

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

For example, the RACH configuration of the network device configuration employs a separate RO configuration that is not shared with other RACH configurations. The RACH configuration supports a first combination of features including at least one of Msg2 retransmission, msg4 retransmission, msgB retransmission, number of retransmissions of the first downlink access information/RSRP interval/CQI interval. Or employing a second sharing parameter comprising at least one of: PRACH configuration index, msg1-FDM, msg1 initial frequency, zero correlation area configuration, preamble target received power, maximum preamble transmission times, power increment step length, response receiving window, RA signaling total number, SSB-CB preamble sequence number and SUL frequency band SSB reference signal power threshold, random access contention resolution time threshold, PRACH root sequence index, msg1 subcarrier spacing, limited set configuration, msg3 transformation precoder, RA access identification priority, A group preamble sequence number, B group power offset value, A group available random access preamble sequence number. In this embodiment, a separate RO configuration is used to configure radio frequency parameters and optimization strategies for a particular network device or a particular coverage area. For example, for areas where there is a poor (poorly covered) area, high interference areas, or special scenarios (such as high speed rail coverage, etc.) in the network, individual radio frequency parameter configurations and optimization policy adjustments may be performed for these areas to improve network performance. In this mode, radio frequency parameters such as antenna tilt angle, power control parameters, neighbor cell definition, etc. are adjusted in a targeted manner according to the requirements of a specific area. Through the second sharing parameters, different network optimization teams or engineers can work cooperatively, so that the uniformity and coordination of the performance optimization and adjustment of the network are ensured. Sharing these parameters helps to maintain consistency and interoperability of the network, thereby improving overall network performance and user experience.

In some embodiments, the RACH configuration includes a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure. For example, the RACH configuration includes a first RACH resource configuration corresponding to 4-STER-RA and/or a second RACH resource configuration corresponding to 2-STER-RA. Wherein 4-STER-RA is the contention random access procedure of the terminal, and 2-STER-RA is the non-contention random access procedure of the terminal.

In some embodiments, the RACH configuration includes a first RACH resource configuration including a RACH common configuration for indicating a RACH resource configuration for a first downlink access information retransmission. For example, the first RACH resource configuration in the present embodiment is a RACH common configuration, which is used to indicate the RACH resource configuration of the first downlink access information retransmission.

In some embodiments, the RACH configuration includes a second RACH resource configuration including a non-contention random access request information MsgA common configuration, msgA common configuration being a RACH resource configuration for indicating retransmission of the first downlink access information. For example, for a 4-STER-RA, indicating a RACH resource configuration for a first downlink access information retransmission in a first RACH resource configuration, the first RACH resource configuration being a RACH common configuration; for 2-STER-RA, the RACH resource configuration of the first downlink access information retransmission is indicated in a second RACH resource configuration, which is MsgA common configuration.

In some embodiments, the RACH configuration includes a third RACH resource configuration of a contention random access CBRA and/or a fourth RACH resource configuration of a non-contention random access CFRA. Exemplary RACH configurations include CBRA and/or RACH resource configurations of CFRA.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration and the CFRA includes a PDCCH protocol triggered CFRA. For example, in this embodiment, the RACH is configured as a fourth RACH resource configuration, that is, the fourth RACH resource configuration is configured as a CFRA configuration, and the CFRA configuration includes a CFRA triggered by the PDCCH protocol. At this time, the RACH configuration may be carried in the PDCCH protocol, or in a common RACH configuration.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration, the CFRA includes a primary-secondary cell change triggered CFRA, and the primary-secondary cell change includes at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change. For example, the RACH configuration includes a fourth RACH resource configuration that is a CFRA, the CFRA at this time including a primary-secondary cell change triggered CFRA including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change.

In some embodiments, the fourth RACH resource configuration employs a shared RO configuration and/or employs a separate RO configuration with the CFRA-RACH configuration of the PRACH transmission. The fourth RACH resource configuration is illustratively a CFRA-RACH configuration, the configuration information may share ROs with other CFRA-RACH configurations, and a separate RO configuration may also be employed.

In some embodiments, the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two step procedure-IE information. The fourth RACH resource configuration is carried in CFRA-IE information, or in CFRA-2STEP-IE information, for example.

Optionally, in some embodiments, if the RACH configuration supports only 4-STEP-CFRA, the plurality of PRACH-CFRA configurations defining the handover are free of CFRA-2STEP configurations.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration and the CFRA includes a beam failure recovery BFR triggered CFRA. For example, the RACH configuration is a fourth RACH resource configuration that is a CFRA configuration that includes BFR triggered CFRA.

In some embodiments, the fourth RACH resource configuration includes at least one of the following parameters: BFR root sequence index, preamble target received power, power increase step length, preamble maximum transmission times, response receiving window, candidate beam reference signal list, RSRP-SSB threshold, RACH-SSB search space configuration, RA-SSB mask index, search space ID of uplink transmission data, RA priority, msg1 subcarrier spacing, retransmission times of first downlink access information, RSRP interval and CQI interval. By way of example, the fourth RACH resource configuration in this embodiment is a CFRA-RACH configuration, which is used to identify and determine different carrier frequencies that can be received by the wireless communication device, and by using CFRA technology, it is ensured that the best carrier frequency can be more intelligently selected in the RACH procedure, so as to improve the access success rate and reduce interference and congestion situations in the wireless network. Such a configuration may help optimize the performance of the wireless network and improve the access experience for the end user.

For example, the CFRA-RACH configuration may be configured by the primary cell and/or the secondary cell alone, and may also be included in the subcarrier spacing beam fault recovery configuration and beam fault recovery SCell (primary secondary cell) configuration information.

In some embodiments, the RACH configuration includes the third RACH resource configuration including a CBRA configuration of the BFR. The RACH configuration is illustratively a third RACH resource configuration, which is CBRA-RACH. The CBRA-RACH includes a BFR triggered CBRA configuration.

In some embodiments, the third RACH resource configuration includes at least one of the following parameters: the target receiving power of the preamble, the power increase step length, the maximum transmission times of the preamble, the response receiving window, the RA priority, the RA two-step random access priority and the Msg1 subcarrier spacing. For example, the CBRA-RACH configuration has the same function as the CFRA-RACH configuration described above, and reference may be made to the above embodiment, and a detailed description thereof will be omitted.

In some embodiments, the RACH configuration includes a third RACH resource configuration including a CBRA configuration for primary-secondary cell changes including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change. The RACH is configured as a third RACH resource configuration that is configured as a CBRA-RACH that includes primary and secondary cell handover, addition and change of triggered CBRA.

In some embodiments, the third RACH resource configuration includes at least one of: the target receiving power of the preamble, the power increase step length, the maximum transmission times of the preamble, the response receiving window, the RA priority, the RA two-step random access priority and the Msg1 subcarrier spacing. For example, in this embodiment, CBRA-RACH is a CBRA triggered by primary and secondary cell change, and the CBRA-RACH configuration includes a plurality of parameters, and the roles of the parameters are the same as those in the foregoing embodiment, which may be referred to the foregoing embodiment and will not be described herein.

In some embodiments, the RACH configuration includes RACH resource configuration required by a serial interface SI (System Information ). For example, the RACH configuration in this embodiment includes RACH resource configuration information for SI requirements. RACH resource configuration for SI requirements refers to RACH resource allocation and configuration for system information requirements in a wireless communication network. The system information plays a very important role in the wireless communication network, and comprises necessary network parameters, operator information, cell information, frequency band configuration, neighbor cell information and the like, and has important significance for the access, positioning, network selection and the like of wireless terminal equipment.

In some embodiments, RACH resource configuration for SI requirements:

the CQI interval corresponds to RACH resource configuration of SI requirements.

For example, RACH configuration of SI requirements may be through retransmission times/RSRP interval/CQI interval. RACH resource configuration fad for SI requirements includes: RACH context parameters, such as RACH general parameters: SSB-RACH scenario; SI requests resources such as: preamble index, RA association cycle index, RA-SSB-scene mask index; SI request periods.

In some embodiments, the RACH configuration includes characteristic priority information of the first downlink access information. The RACH configuration information includes, for example, a characteristic priority of Msg2/MsgB/Msg4 retransmissions.

In some embodiments, the number of retransmissions, RSRP interval, or CQI interval under the combination of characteristics has the same priority. For example, different retransmission times/RSRP intervals/CQI intervals under the same characteristic combination may have the same priority.

In step S2102, the terminal sends auxiliary information to the network device according to RACH configuration.

In this embodiment, the terminal determines the quality of the downlink signal of the terminal or suggests the number of times of retransmission of the first downlink access information or the retransmission capability of the first downlink access signal according to the RACH configuration sent by the network device. Generating the auxiliary information according to the information, and sending the auxiliary information to the network equipment, wherein the auxiliary information is used for assisting the network equipment to determine the retransmission times of the first downlink access information.

In step S2103, the network device determines the number of retransmissions of the first downlink access information according to the auxiliary information.

For example, the network device determines the retransmission times of the first downlink access information according to the auxiliary information reported by the terminal.

In some embodiments, the names of information and the like are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "instruction", "command", "channel", "parameter", "field", "symbol", "codebook", "code word", "code point", "codepoint", "bit", "data", "program", "chip", and the like may be replaced with each other.

In some embodiments, the terms "codebook", "codeword", "precoding matrix" and the like may be interchanged. For example, a codebook may be a collection of one or more codewords/precoding matrices.

In some embodiments, terms such as "uplink," "physical uplink," and the like may be interchanged, terms such as "downlink," "physical downlink," and the like may be interchanged, terms such as "side," "side link," "side communication," "side link," "direct link," and the like may be interchanged.

In some embodiments, terms such as "downlink control information (downlink control information, DCI)", "Downlink (DL) assignment", "DL DCI", "Uplink (UL) grant", "UL DCI", and the like may be replaced with each other.

In some embodiments, terms of "physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH)", "DL data", etc. may be replaced with each other, and terms of "Physical Uplink Shared Channel (PUSCH)", "UL data", etc. may be replaced with each other.

In some embodiments, terms such as "radio," "wireless," "radio access network," "RAN," and "RAN-based" may be used interchangeably.

In some embodiments, terms of "synchronization signal (synchronization signal, SS)", "synchronization signal block (synchronization signal block, SSB)", "reference signal (REFERENCE SIGNAL, RS)", "pilot signal", and the like may be substituted for each other.

In some embodiments, terms such as "time of day," "point of time," "time location," and the like may be interchanged, and terms such as "duration," "period," "time window," "time," and the like may be interchanged.

In some embodiments, terms of "component carrier (component carrier, CC)", "cell", "frequency carrier (frequency carrier)", "carrier frequency (carrier frequency)", and the like may be interchanged.

In some embodiments, terms such as "Resource Block (RB)", "physical resource block (physical resource block, PRB)", "subcarrier group (SCG)", "resource element group (resource element group, REG)", "PRB pair", "RB pair", "Resource Element (RE)", "subcarrier (sub-carrier)", and the like may be substituted for each other.

In some embodiments, "acquire," "obtain," "receive," "transmit," "bi-directional transmit," "send and/or receive" may be used interchangeably and may be interpreted as receiving from other principals, acquiring from protocols, acquiring from higher layers, processing itself, autonomous implementation, etc.

In some embodiments, terms such as "send," "transmit," "report," "send," "transmit," "bi-directional," "send and/or receive," and the like may be used interchangeably.

In some embodiments, terms such as "specific (certains)", "predetermined (preseted)", "preset", "set", "indicated (indicated)", "certain", "arbitrary", "first", and the like may be replaced with each other, and "specific a", "predetermined a", "preset a", "set a", "indicated a", "certain a", "arbitrary a", "first a" may be interpreted as a predetermined in a protocol or the like, may be interpreted as a obtained by setting, configuring, or indicating, or the like, may be interpreted as specific a, certain a, arbitrary a, or first a, or the like, but are not limited thereto.

In some embodiments, the determination or judgment may be performed by a value (0 or 1) expressed in 1 bit, may be performed by a true-false value (boolean) expressed in true (true) or false (false), or may be performed by a comparison of values (e.g., a comparison with a predetermined value), but is not limited thereto.

In some embodiments, "not expected to receive" may be interpreted as not receiving on time domain resources and/or frequency domain resources, or as not performing subsequent processing on data or the like after the data or the like is received; "not expected to transmit" may be interpreted as not transmitting, or may be interpreted as transmitting but not expecting the receiver to respond to the transmitted content.

In this way, the network device sends the random access channel RACH configuration to the terminal, the terminal sends the auxiliary information to the network device according to the RACH configuration, and the network device determines the retransmission times of the first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, the network equipment configures RACH resources to the terminal, compared with the resources which are not determined for transmission, the network equipment guarantees the realization of effective transmission of the auxiliary information through different RACH resources, and further, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, thereby improving the downlink coverage performance of the network equipment.

Fig. 3 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in fig. 3, an embodiment of the present disclosure relates to a communication method, which is performed by a terminal, the method including:

Step S3101, a random access channel RACH configuration transmitted by a network device is received.

In some embodiments, the number of retransmissions includes a number of physical downlink control channel PDCCH retransmissions and/or a number of physical downlink shared channel PDSCH retransmissions.

In some embodiments, the RACH configuration includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

Packet data, the data scale of the packet data is smaller than the set scale;

Network slice automation and service management NSAG.

Msg2 retransmission;

msg4 retransmission;

msg2 and Msg4 retransmissions;

Msg2 and MsgB retransmissions;

Msg2, msg4 and MsgB retransmissions.

the RACH configures a corresponding channel quality indicator CQI interval.

In some embodiments, the combination of characteristics includes IE information, the IE information including indication information.

In some embodiments, the RACH configuration employs a shared random access occasion, RO, configuration and/or a separate RO configuration.

The retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

The retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

In some embodiments, the RACH configuration includes a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure.

In some embodiments, the RACH configuration includes a first RACH resource configuration including a RACH common configuration for indicating a RACH resource configuration for a first downlink access information retransmission.

In some embodiments, the RACH configuration includes a second RACH resource configuration including a non-contention random access request information MsgA common configuration, msgA common configuration being a RACH resource configuration for indicating retransmission of the first downlink access information.

In some embodiments, the RACH configuration includes a third RACH resource configuration of a contention random access CBRA and/or a fourth RACH resource configuration of a non-contention random access CFRA.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration including PDCCH protocol triggered CFRA.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration including a primary-secondary cell change triggered CFRA, the primary-secondary cell change including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change.

In some embodiments, the fourth RACH resource configuration employs a shared RO configuration and/or employs a separate RO configuration with the CFRA-RACH configuration of the PRACH transmission.

In some embodiments, the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two step procedure-IE information.

In some embodiments, the RACH configuration includes a fourth RACH resource configuration including a beam failure recovery BFR triggered CFRA.

In some embodiments, the fourth RACH resource configuration includes at least one of:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

In some embodiments, the RACH configuration includes a third RACH resource configuration including a CBRA configuration of the BFR.

In some embodiments, the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

In some embodiments, the RACH configuration includes a third RACH resource configuration including a CBRA configuration for primary-secondary cell changes including at least one of primary-secondary cell handover, primary-secondary cell addition, and primary-secondary cell change.

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

In some embodiments, the RACH configuration includes a RACH resource configuration required by the serial interface SI.

In some embodiments, RACH resource configuration for SI requirements:

the CQI interval corresponds to RACH resource configuration of SI requirements.

In some embodiments, the RACH configuration includes characteristic priority information of the first downlink access information.

In some embodiments, the number of retransmissions, RSRP interval, or CQI interval under the combination of characteristics has the same priority.

The related implementation of step S3101 in the embodiments of the present disclosure may refer to the embodiments in step S2101, which are not described herein.

Step S3102, according to the RACH configuration, transmitting auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of the first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

The related implementation of step S3101 in the embodiments of the present disclosure may refer to the embodiment in step S2102, and will not be described herein.

In this way, the random access channel RACH configuration sent by the network device is received, and according to the RACH configuration, auxiliary information is sent to the network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, the network equipment configures RACH resources to the terminal, compared with the resources which are not determined for transmission, the network equipment guarantees the realization of effective transmission of the auxiliary information through different RACH resources, and further, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, thereby improving the downlink coverage performance of the network equipment.

Fig. 4 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in fig. 4, an embodiment of the present disclosure relates to a communication method, performed by a network device, the method including:

Step S4101, RACH configuration is sent to the terminal.

In some embodiments, the RACH configuration is used to instruct the terminal to send assistance information to the network device according to the RACH configuration.

In some embodiments, the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB.

In some embodiments, the RACH configuration includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

Packet data, the data scale of the packet data is smaller than the set scale;

Network slice automation and service management NSAG.

Msg2 retransmission;

msg4 retransmission;

msg2 and Msg4 retransmissions;

Msg2 and MsgB retransmissions;

Msg2, msg4 and MsgB retransmissions.

the RACH configures a corresponding channel quality indicator CQI interval.

The retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

The retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

In some embodiments, RACH resource configuration for SI requirements:

the CQI interval corresponds to RACH resource configuration of SI requirements.

The related implementation of step S4101 in the embodiments of the present disclosure may refer to the embodiments in step S2101, which are not described herein.

In this way, the network device sends the RACH configuration to the terminal, where the RACH configuration is used to instruct the terminal to send the auxiliary information to the network device according to the RACH configuration, and the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Therefore, the network equipment configures RACH resources to the terminal, compared with the resources which are not determined for transmission, the network equipment guarantees the realization of effective transmission of the auxiliary information through different RACH resources, and further, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, thereby improving the downlink coverage performance of the network equipment.

Fig. 5 is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in fig. 5, an embodiment of the present disclosure relates to a communication method, which is performed by a terminal, the method including:

In step S5101, RACH configuration transmitted by a network device is received.

In step S5102, auxiliary information is sent to the network device according to the RACH configuration, where the auxiliary information is used to instruct the network device to determine the retransmission times of Msg2/Msg4/MsgB according to the auxiliary information.

In some embodiments, the Msg2/Msg4/MsgB retransmission comprises an Msg2/Msg4/MsgB PDCCH retransmission and/or an Msg2/Msg4/MsgB PDSCH retransmission.

In some embodiments, the RACH configuration information includes at least one of:

Dedicated RACH resource configuration supporting a combination of characteristics of Msg2/Msg 4/MsgB;

common RACH resource configuration supporting feature combinations of Msg2/Msg 4/MsgB.

In some embodiments, adding IE information to the combination of characteristics is used to indicate at least one of: msg2 retransmission, msg4 retransmission, msg2+msg4 retransmission, msg2+ MsgB retransmission, msg2+ MsgB +msg4 retransmission.

In some embodiments, different RACH resources may be configured for different numbers of retransmissions/RSRP intervals/CQI intervals.

In some embodiments, the RACH configuration information of the number of retransmissions includes indication information for indicating the number of Msg2/MsgB/Msg4 retransmissions or the RSRP interval/CQI interval corresponding to the RACH configuration. The indication information of the retransmission times or the RSRP interval/CQI interval is contained in the IE information of the characteristic combining preamble.

In some embodiments, the network device may configure multiple RACH configurations with the same combination of features, but with different Msg2/MsgB/Msg4 number of retransmissions/RSRP interval/CQI interval.

In some embodiments, the RACH configuration supports a configuration that shares ROs with other RACH configurations, or a separate RO configuration is employed.

In some embodiments, if the RACH configuration employs a shared RO configuration, multiple combinations of characteristics (e.g., msg2 retransmissions, msg4 retransmissions, msgB retransmissions, msg2/MsgB retransmissions) or per retransmission times/RSRP interval/CQI interval configurations or sharing one or more of the following parameters are supported:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

In some embodiments, if the RACH configuration employs a separate RO configuration, multiple combinations of characteristics (e.g., msg2 retransmissions, msg4 retransmissions, msgB retransmissions, msg2/MsgB retransmissions) or per retransmission times/RSRP interval/CQI interval configurations or sharing one or more of the following parameters are supported:

the retransmission times of the first downlink access information;

the RSRP interval;

The CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

In some embodiments, the RACH configuration information includes RACH resource configurations of 4-STEP-RA and/or 2-STEP-RA.

In some embodiments, for 4-STEP-RA, the RACH resource configuration for Msg2/MsgB/Msg4 retransmission is indicated in RACH-ConfigCommon (common configuration); for 2-STEP-RA, the RACH resource configuration for Msg2/MsgB/Msg4 retransmissions is indicated in MsgA-ConfigCommon (public configuration).

In some embodiments, the RACH configuration information includes a CBRA and/or RACH resource configuration of a CFRA.

In some embodiments, the CFRA comprises a PDCCH protocol triggered CFRA.

In some embodiments, the RACH configuration may be carried in the PDCCH protocol or in a common RACH configuration (RACH-ConfigCommon-common configuration).

In some embodiments, the CFRA includes a HO or PSCell (Primary Secondary Cell ) add/change triggered CFRA.

In some embodiments, the CFRA-RACH configuration may share RO access occasions with a CFRA-RACH configuration of a single PRACH transmission or the CFRA-RACH configuration employs separate RO access occasions.

In some embodiments, the CFRA RACH configuration of the multi-PRACH transmission may multiplex the CFRA RACH configuration of a single PRACH transmission.

In some embodiments, the CFRA-RACH configuration is carried in CFRA-IE information and/or CFRA-2Step-IE information. Alternatively, only 4-Step CFRA may be supported, and CFRA-2Step configuration is not included in the multi-PRACH-CFRA configuration defining the handover.

In some embodiments, the CFRA includes a BFR (Beam Failure Recovery ) triggered CFRA.

In some embodiments, the CFRA-RACH configuration may include at least one of the following parameters:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

In some embodiments, the CFRA-RACH configuration may be configured separately for the primary and secondary cells, i.e. contained in Beam Failure Recovery Config (subcarrier-spaced beam-failure recovery configuration) and Beam Failure Recovery SCell Config (beam-failure recovery SCell configuration), respectively.

In some embodiments, the CBRA configuration may include one or more of the following parameters:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

In some embodiments, the RACH configuration information includes RACH resource configuration for SI requirements.

In some embodiments, RACH resources required for SI may be configured with number of retransmissions/RSRP interval/CQI interval.

In some embodiments, the RACH resource configuration of SI requirements includes: RACH context parameters, such as RACH general parameters: SSB-RACH scenario; SI requests resources such as: preamble index, RA association cycle index, RA-SSB-scene mask index; SI request periods.

In some embodiments, the RACH configuration information includes characteristic priority information for Msg2/MsgB/Msg4 retransmissions.

In some embodiments, different retransmission times/RSRP intervals/CQI intervals of the same characteristics have the same characteristic priority.

By the mode, the network equipment configures the RACH resources to the terminal, compared with the resources which are not determined for transmission, the network equipment guarantees the realization of effective transmission of the auxiliary information through different RACH resources, and further, the network equipment determines the retransmission times of the downlink access information according to the auxiliary information, so that the downlink coverage performance of the network equipment is improved.

Fig. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure. As shown in fig. 6, the terminal 6100 may include: a first transceiver module 6101 and a first processing module 6102. In some embodiments, the first transceiver module 6101 is configured to receive a random access channel RACH configuration sent by a network device, and the first processor module 6102 is configured to send, according to the RACH configuration, auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine a number of retransmissions of first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Optionally, the transceiver module is configured to perform at least one of the communication steps of sending and/or receiving performed by the terminal 101 in any of the above methods, which is not described herein.

In some embodiments, the first transceiver module 6101 may include a transmitting module and/or a receiving module, which may be separate or integrated. Alternatively, the transceiver module may be interchangeable with a transceiver.

In some embodiments, the first processing module 6102 may be interchanged with an execution module.

Fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure. As shown in fig. 7, the network device 7100 may include: a second transceiver module 7101. In some embodiments, the second transceiver module 7101 is configured to send a RACH configuration to a terminal, where the RACH configuration is configured to instruct the terminal to send auxiliary information to the network device according to the RACH configuration, where the auxiliary information is configured to instruct the network device to determine a number of retransmissions of first downlink access information according to the auxiliary information, where the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB. Optionally, the second transceiver module 7101 is configured to perform at least one of the communication steps of sending and/or receiving performed by the network device 102 in any of the above methods, which is not described herein.

In some embodiments, the second transceiver module 7101 may include a transmitting module and/or a receiving module, which may be separate or integrated. Alternatively, the transceiver module may be interchangeable with a transceiver.

Fig. 8 is a schematic structural diagram of a communication device 8100 according to an embodiment of the present disclosure. The communication device 8100 may be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user device, etc.), a chip system, a processor, etc. that supports the network device to implement any of the above methods, or a chip, a chip system, a processor, etc. that supports the terminal to implement any of the above methods. The communication device 8100 may be used to implement the method described in the above method embodiments, and reference may be made in particular to the description of the above method embodiments.

As shown in fig. 8, communication device 8100 includes one or more third processors 8101. The third processor 8101 may be a general-purpose processor or a special-purpose processor, etc., and may be, for example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process data for the programs. Optionally, the communication device 8100 is configured to perform any of the above methods. Optionally, one or more third processors 8101 are configured to invoke instructions to cause communication device 8100 to perform any of the above methods.

In some embodiments, communication device 8100 also includes one or more third transceivers 8102. When the communication device 8100 includes one or more third transceivers 8102, the third transceivers 8102 perform at least one of the communication steps of transmitting and/or receiving, etc., in the above-described method, and the third processor 8101 performs at least one of the other steps. In alternative embodiments, the transceiver may include a receiver and/or a transmitter, which may be separate or integrated. Alternatively, terms such as transceiver, transceiver unit, transceiver circuit, interface, etc. may be replaced with each other, terms such as transmitter, transmitter unit, transmitter circuit, etc. may be replaced with each other, and terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

In some embodiments, communication device 8100 also includes one or more third memory 8103 for storing data. Optionally, all or part of the third memory 8103 may also be external to the communication device 8100. In alternative embodiments, communication device 8100 may include one or more first interface circuits 8104. Optionally, the first interface circuit 8104 is connected to the third memory 8103, and the first interface circuit 8104 is operable to receive data from the third memory 8103 or other device and is operable to transmit data to the third processor 8101 or other device. For example, the first interface circuit 8104 may read data stored in the third memory 8103 and transmit the data to the third processor 8101.

The communication device 8100 in the above embodiment description may be a network device or a terminal, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by fig. 8. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be: 1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem; (2) A set of one or more ICs, optionally including storage means for storing data, programs; (3) an ASIC, such as a Modem (Modem); (4) modules that may be embedded within other devices; (5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligent device, and the like; (6) others, and so on.

Fig. 9 is a schematic structural diagram of a chip 8200 according to an embodiment of the present disclosure. For the case where the communication device 8100 may be a chip or a chip system, reference may be made to a schematic structural diagram of the chip 8200 shown in fig. 9, but is not limited thereto.

The chip 8200 includes one or more fourth processors 8201. The chip 8200 is used to perform any of the above methods.

In some embodiments, the chip 8200 further comprises one or more second interface circuits 8202. Alternatively, the terms interface circuit, interface, transceiver pin, etc. may be interchanged. In some embodiments, the chip 8200 further comprises one or more fourth memories 8203 for storing data. Alternatively, all or part of the fourth memory 8203 may be external to the chip 8200. Optionally, a second interface circuit 8202 is connected to the fourth memory 8203, the second interface circuit 8202 may be configured to receive data from the fourth memory 8203 or another device, and the second interface circuit 8202 may be configured to send data to the fourth memory 8203 or another device. For example, the second interface circuit 8202 may read data stored in the fourth memory 8203 and transmit the data to the fourth processor 8201.

In some embodiments, the second interface circuit 8202 performs at least one of the communication steps of sending and/or receiving in the above-described methods. The second interface circuit 8202 performs the communication step of transmitting and/or receiving in the above method, for example, by: the second interface circuit 8202 performs data interaction between the fourth processor 8201, the chip 8200, the fourth memory 8203, or the transceiving device. In some embodiments, fourth processor 8201 performs at least one of the other steps.

The modules and/or devices described in the embodiments of the virtual device, the physical device, the chip, etc. may be arbitrarily combined or separated according to circumstances. Alternatively, some or all of the steps may be performed cooperatively by a plurality of modules and/or devices, without limitation.

The present disclosure also proposes a storage medium having stored thereon instructions that, when executed on a communication device 8100, cause the communication device 8100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Alternatively, the storage medium described above is a computer-readable storage medium, but is not limited thereto, and it may be a storage medium readable by other devices. Alternatively, the above-described storage medium may be a non-transitory (non-transitory) storage medium, but is not limited thereto, and it may also be a transitory storage medium.

The present disclosure also proposes a program product which, when executed by a communication device 8100, causes the communication device 8100 to perform any of the above methods. Optionally, the above-described program product is a computer program product.

The present disclosure also proposes a computer program which, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A method of communication, performed by a terminal, the method comprising:

receiving Random Access Channel (RACH) configuration sent by network equipment;

According to the RACH configuration, transmitting auxiliary information to the network device, where the auxiliary information is used to instruct the network device to determine the retransmission times of the first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB;

The RACH configuration includes at least one of:

Common RACH resource configuration information supporting a combination of characteristics of the first downlink access information;

the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

network slice automation and service management NSAG;

The RACH configuration includes indication information for indicating at least one of:

the RACH configures a corresponding channel quality indication CQI interval;

The characteristic combination includes IE information including the indication information;

The RACH configuration adopts shared random access opportunity (RO) configuration and/or individual RO configuration;

The RACH configuration employs the shared RO configuration, the RACH configuration supporting at least one of:

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first shared parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

The number of available random access preamble sequences of group A;

the RACH configuration employs the separate RO configuration, the RACH configuration supporting at least one of:

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

2. The method of claim 1, wherein the number of retransmissions comprises a number of physical downlink control channel, PDCCH, retransmissions and/or a number of physical downlink shared channel, PDSCH, retransmissions.

3. The method of claim 1, wherein the combination of characteristics includes information element, IE, information indicating at least one of:

the Msg2 retransmission;

the Msg4 retransmission;

the Msg2 and the Msg4 retransmissions;

Said Msg2 and said MsgB retransmissions;

The Msg2, the Msg4, and the MsgB retransmissions.

4. The method of claim 1, wherein the RACH configuration comprises a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure.

5. The method of claim 4, wherein the RACH configuration comprises the first RACH resource configuration, the first RACH resource configuration comprises a RACH common configuration for indicating a RACH resource configuration for the first downlink access information retransmission.

6. The method of claim 4, wherein the RACH configuration comprises the second RACH resource configuration comprising a non-contention random access request information MsgA common configuration, the MsgA common configuration being used to indicate RACH resource configuration for the first downlink access information retransmission.

7. The method according to claim 1, wherein the RACH configuration comprises a third RACH resource configuration of a contention random access, CBRA, and/or a fourth RACH resource configuration of a non-contention random access, CFRA.

8. The method of claim 7, wherein the RACH configuration comprises the fourth RACH resource configuration comprising a PDCCH protocol triggered CFRA.

9. The method of claim 8, wherein the RACH configuration comprises the fourth RACH resource configuration comprising a primary-secondary cell change-triggered CFRA, the primary-secondary cell change comprising at least one of a primary-secondary cell handover, a primary-secondary cell addition, and a primary-secondary cell change.

10. The method according to claim 8 or 9, wherein the fourth RACH resource configuration and CFRA-RACH configuration of PRACH transmission are in a shared RO configuration and/or in a separate RO configuration.

11. The method according to claim 10, wherein the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two-step procedure-IE information.

12. The method of claim 7, wherein the RACH configuration comprises the fourth RACH resource configuration comprising a beam failure recovery BFR triggered CFRA.

13. The method of claim 10, wherein the fourth RACH resource configuration includes at least one of:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

14. The method of claim 7, wherein the RACH configuration comprises the third RACH resource configuration comprising a CBRA configuration of a BFR.

15. The method of claim 14, wherein the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

16. The method of claim 7, wherein the RACH configuration comprises the third RACH resource configuration, the third RACH resource configuration comprises a CBRA configuration for primary-secondary cell changes including at least one of primary-secondary cell handovers, primary-secondary cell additions, and primary-secondary cell changes.

17. The method of claim 16, wherein the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

18. The method of claim 1, wherein the RACH configuration comprises a RACH resource configuration required by a serial interface SI.

19. The method of claim 18, wherein the SI-required RACH resource configuration:

the CQI interval corresponds to RACH resource configuration of SI requirements.

20. The method of claim 1, wherein the RACH configuration includes characteristic priority information of the first downlink access information.

21. The method of claim 20, wherein the number of retransmissions, RSRP interval, or CQI interval under the combination of characteristics has the same priority.

22. A method of communication, performed by a network device, the method comprising:

Transmitting RACH configuration to a terminal, where the RACH configuration is configured to instruct the terminal to transmit auxiliary information to the network device according to the RACH configuration, where the auxiliary information is configured to instruct the network device to determine retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB;

The RACH configuration includes at least one of:

the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

network slice automation and service management NSAG;

the RACH configures a corresponding channel quality indication CQI interval;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first shared parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

The number of available random access preamble sequences of group A;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

23. The method of claim 22, wherein the number of retransmissions comprises a number of physical downlink control channel, PDCCH, retransmissions and/or a number of physical downlink shared channel, PDSCH, retransmissions.

24. The method of claim 22, wherein the combination of characteristics includes information element, IE, information indicating at least one of:

the Msg2 retransmission;

the Msg4 retransmission;

the Msg2 and the Msg4 retransmissions;

Said Msg2 and said MsgB retransmissions;

The Msg2, the Msg4, and the MsgB retransmissions.

25. The method of claim 22, wherein the RACH configuration comprises a first RACH resource configuration of a four-step RA procedure and/or a second RACH resource configuration of a two-step RA procedure.

26. The method of claim 25, wherein the RACH configuration comprises the first RACH resource configuration, the first RACH resource configuration comprises a RACH common configuration for indicating a RACH resource configuration for the first downlink access information retransmission.

27. The method of claim 25, wherein the RACH configuration comprises the second RACH resource configuration comprising a non-contention random access request information MsgA common configuration, the MsgA common configuration being used to indicate RACH resource configuration for the first downlink access information retransmission.

28. The method according to claim 25, wherein the RACH configuration comprises a third RACH resource configuration of a contention random access, CBRA, and/or a fourth RACH resource configuration of a non-contention random access, CFRA.

29. The method of claim 28, wherein the RACH configuration comprises the fourth RACH resource configuration and the CFRA comprises a PDCCH protocol triggered CFRA.

30. The method of claim 28, wherein the RACH configuration comprises the fourth RACH resource configuration, the CFRA comprises a primary-secondary cell change triggered CFRA, and the primary-secondary cell change comprises at least one of a primary-secondary cell handover, a primary-secondary cell addition, and a primary-secondary cell change.

31. The method according to claim 29 or 30, wherein the fourth RACH resource configuration and CFRA-RACH configuration of PRACH transmission are in a shared RO configuration and/or in a separate RO configuration.

32. The method according to claim 31, wherein the fourth RACH resource configuration is carried in CFRA-IE information and/or CFRA-two-step procedure-IE information.

33. The method of claim 28, wherein the RACH configuration comprises the fourth RACH resource configuration, and wherein the CFRA comprises a beam failure recovery BFR triggered CFRA.

34. The method of claim 31, wherein the fourth RACH resource configuration includes at least one of:

BFR root sequence index;

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

A list of candidate beam reference signals;

RSRP-SSB threshold;

RACH-SSB search space configuration;

RA-SSB mask index;

a search space ID of uplink transmission data;

RA priority;

msg1 subcarrier spacing;

The retransmission times of the first downlink access information;

RSRP intervals;

CQI interval.

35. The method of claim 28, wherein the RACH configuration comprises the third RACH resource configuration comprising a CBRA configuration of a BFR.

36. The method of claim 35, wherein the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

37. The method of claim 28, wherein the RACH configuration comprises the third RACH resource configuration, the third RACH resource configuration comprises a CBRA configuration for primary-secondary cell changes including at least one of primary-secondary cell handovers, primary-secondary cell additions, and primary-secondary cell changes.

38. The method of claim 37, wherein the third RACH resource configuration includes at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

RA priority;

RA two-step random access priority;

msg1 subcarrier spacing.

39. The method of claim 22, wherein the RACH configuration comprises a RACH resource configuration required by a serial interface SI.

40. The method of claim 39, wherein the SI requires RACH resource configuration:

the CQI interval corresponds to RACH resource configuration of SI requirements.

41. The method of claim 22, wherein the RACH configuration includes characteristic priority information of the first downlink access information.

42. The method of claim 41, wherein the number of retransmissions, the RSRP interval, or the CQI interval under the combination of characteristics have the same priority.

43. A method of communication, the method comprising:

the network equipment sends RACH configuration to the terminal;

The network device determines retransmission times of first downlink access information according to the auxiliary information, wherein the first downlink access information comprises: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB;

The RACH configuration includes at least one of:

the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

network slice automation and service management NSAG;

the RACH configures a corresponding channel quality indication CQI interval;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first shared parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

The number of available random access preamble sequences of group A;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

44. A terminal, comprising:

a first processing module configured to send auxiliary information to the network device according to the RACH configuration, where the auxiliary information is used to instruct the network device to determine the number of retransmissions of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB;

The RACH configuration includes at least one of:

the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

network slice automation and service management NSAG;

the RACH configures a corresponding channel quality indication CQI interval;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first shared parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

The number of available random access preamble sequences of group A;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

45. A network device, comprising:

The second transceiver module is configured to send RACH configuration to a terminal, where the RACH configuration is used to instruct the terminal to send auxiliary information to the network device according to the RACH configuration, the auxiliary information is used to instruct the network device to determine retransmission times of first downlink access information according to the auxiliary information, and the first downlink access information includes: at least one of contention random access response information Msg2, contention resolution information Msg4, and non-contention random access response information MsgB;

The RACH configuration includes at least one of:

the combination of characteristics includes at least one of:

retransmission of connection request information Msg 3;

competing random access request information Msg1 for retransmission;

Performance degradation RedCap;

network slice automation and service management NSAG;

the RACH configures a corresponding channel quality indication CQI interval;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

a first shared parameter comprising at least one of:

Preamble target received power;

A power increase step size;

maximum transmission times of the preamble;

Responding to the receiving window;

System synchronization block SSB resource index;

Supplementing an uplink SUL signal strength threshold;

A preamble start offset;

The number of preambles;

The number of group a leader sequences;

Group B power offset values;

The number of available random access preamble sequences of group A;

the retransmission times of the first downlink access information;

RSRP intervals;

A CQI interval;

Physical random access channel PRACH configuration index;

Msg 1-frequency division multiplexing FDM;

msg1 onset frequency;

Zero correlation zone configuration;

Preamble target received power;

maximum transmission times of the preamble;

A power increase step size;

Responding to the receiving window;

Random access RA signaling total number;

a random access contention-resolved time threshold;

PRACH root sequence index;

msg1 subcarrier spacing;

restricted set configuration;

An Msg3 transform precoder;

RA access identity priority;

The number of group a leader sequences;

Group B power offset values;

Group a number of available random access preamble sequences.

46. A terminal, comprising:

One or more processors;

Wherein the terminal is configured to perform the communication method of any of claims 1-21.

47. A network device, comprising:

One or more processors;

Wherein the network device is configured to perform the communication method of any of claims 22-42.

48. A communication system comprising a terminal configured to implement the communication method of any of claims 1-21 and a network device configured to implement the communication method of any of claims 22-42.

49. A storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the communication method of any one of claims 1-21 or cause the communication device to perform the communication method of any one of claims 22-42.