CN116266957B

CN116266957B - Message retransmission method, network equipment and user equipment

Info

Publication number: CN116266957B
Application number: CN202210311824.5A
Authority: CN
Inventors: 李南希; 朱剑驰; 尹航; 郭婧; 佘小明
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2024-02-09
Anticipated expiration: 2042-03-28
Also published as: CN116266957A

Abstract

The disclosure relates to a repeated transmission method of a message, network equipment and user equipment, and relates to the technical field of communication. The repeated transmission method of the message comprises the following steps: and sending control information to the UE needing to resend the user equipment identification information so that the UE can repeatedly transmit the user equipment identification information according to the control information, wherein an MCS field in the control information comprises indication information of the repeated transmission times and indication information of an MCS index. The technical scheme of the disclosure can instruct retransmission of the MCS index of MSG3, thereby improving communication performance.

Description

Message retransmission method, network equipment and user equipment

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to a method for repeating a message, a network device, a user device, a system for repeating a message, an electronic device, and a non-volatile computer readable storage medium.

Background

The 3GPP (3 rd Generation Partnership Project, third generation partnership project) NR (New Radio, new air interface) Rel-16 (release 16) protocol does not yet support repeated transmission of MSG3 (Message 3 ) PUSCH (Physical Uplink Share Channel, physical uplink shared channel). However, this feature has been introduced in the coverage enhancement project of Rel-17 to enhance its upstream coverage performance.

In the related art, repeated transmission of the primary transmission MSG3 and the retransmission MSG3 is supported.

Disclosure of Invention

The inventors of the present disclosure found that the above-described related art has the following problems: the MCS (Modulation and Coding Scheme, modulation coding strategy) index of the retransmission MSG3 cannot be instructed, resulting in degradation of communication performance.

In view of this, the disclosure proposes a repeated transmission technical solution of a message, which can instruct to retransmit the MCS index of MSG3, thereby improving communication performance.

According to some embodiments of the present disclosure, there is provided a method for repeating transmission of a message, including: and sending control information to the UE (User Equipment) needing to resend the User Equipment identification message, so that the UE repeatedly transmits the User Equipment identification message according to the control information, wherein an MCS field in the control information comprises indication information of the repeated transmission times and indication information of an MCS index.

In some embodiments, the indication bits in the indication information are used to indicate the MCS index set in which the MCS index is located, and the other bits in the indication information are used to indicate the index value of the MCS index in the MCS index set.

In some embodiments, the MCS index set is a first MCS index set or a second MCS index set, the first MCS index set being a MCS index set employed when the UE first transmits the user equipment identification message.

In some embodiments, the intersection of the second MCS index set and the first MCS index set is an empty set.

In some embodiments, the elements in the second MCS index set are determined by calculation from the elements in the first MCS index set, or the elements in the second MCS index set are configured by RRC or take a pre-configured fixed value.

In some embodiments, the elements in the second MCS index set are determined by at least one of: the determination is based on a sum or difference of elements in the first MCS index set and the first parameter, or based on a product or quotient of elements in the first MCS index set and the second parameter.

In some embodiments, the first parameter and the second parameter are fixed values that are pre-configured, or the first parameter and the second parameter are configured by RRC (Radio Resource Control ).

In some embodiments, the indication information is used to indicate the MCS index in a third MCS index set, the third MCS index set being a default MCS index set that is pre-configured, or the third MCS index set being configured by RRC.

In some embodiments, the first bit in the MCS field includes indication of the number of repeated transmissions, the second bit includes indication of the MCS index, the first bit includes at least one bit MSB (Most Significant Bit ), and the second bit includes at least one bit LSB (Least Significant Bit ). In some embodiments, the ue identification Message is MSG3 (Message 3) in the ue random access procedure.

According to other embodiments of the present disclosure, there is provided a method for repeating transmission of a message, including: and the UE re-transmits the user equipment identification message according to the control information sent by the network equipment, wherein an MCS field in the control information comprises the indication information of the repeated transmission times and the indication information of the MCS index.

In some embodiments, the first parameter and the second parameter are fixed values that are pre-configured or the first parameter and the second parameter are configured by RRC.

In some embodiments, the first bit in the MCS field includes indication of the number of repeated transmissions, the second bit includes indication of the MCS index, the first bit includes at least one bit MSB, and the second bit includes at least one bit LSB.

In some embodiments, the user equipment identification message is MSG3 in a user equipment random access procedure.

According to still further embodiments of the present disclosure, there is provided a network device comprising: and the sending unit is used for sending control information to the UE needing to resend the UE identification information so that the UE can repeatedly transmit the UE identification information according to the control information, and a Modulation Coding Strategy (MCS) field in the control information comprises indication information of the repeated transmission times and indication information of an MCS index.

According to still further embodiments of the present disclosure, there is provided a user equipment, UE, which needs to retransmit a user equipment identification message, comprising: and the transmission unit is used for retransmitting the user equipment identification message according to the control information sent by the network equipment, wherein the MCS field in the control information comprises the indication information of the repeated transmission times and the indication information of the MCS index.

According to still further embodiments of the present disclosure, there is provided a retransmission system of a message, including: a network device configured to execute the method for repeating transmission of a message on the network device side in any of the above embodiments; and the user equipment is used for executing the repeated transmission method of the message measured by the user equipment in any embodiment.

According to still further embodiments of the present disclosure, there is provided an electronic device including: a memory; and a processor coupled to the memory, the processor configured to perform the method of repeated transmission of messages on the network device side or the method of repeated transmission of messages measured by the user device in any of the embodiments described above based on instructions stored in the memory means.

According to still further embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for repeated transmission of a message on the network device side in any of the above embodiments, or the method for repeated transmission of a message measured by a user device.

In the above embodiment, the network device indicates the number of repeated transmissions and MCS index to the UE that needs to retransmit the UE identification message through the MCS field, thereby improving communication performance.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 illustrates a flow chart of some embodiments of a method of repeating transmissions of messages of the present disclosure;

FIG. 2 illustrates a flow chart of further embodiments of a method of repeating transmissions of messages of the present disclosure;

fig. 3 illustrates a flow chart of yet other embodiments of a method of repeating transmissions of messages of the present disclosure;

fig. 4a shows a block diagram of some embodiments of a network device of the present disclosure;

fig. 4b shows a block diagram of some embodiments of a user device of the present disclosure;

FIG. 5 illustrates a block diagram of some embodiments of an electronic device of the present disclosure;

FIG. 6 illustrates a block diagram of further embodiments of an electronic device of the present disclosure;

fig. 7 illustrates a block diagram of some embodiments of a retransmission system for messages of the present disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and apparatus should be considered part of the specification.

In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

For the repeated transmission in the primary transmission process of MSG3, the number of repeated transmission may be indicated by using the highest 2 bits of the MCS field of the RAR UL grant (random access response uplink grant) for scheduling the primary transmission; its MCS index may be indicated with the lowest 2 bits of the MCS field.

For the retransmission in the retransmission (non-primary transmission) process of MSG3, the number of repeated transmissions is indicated by using the highest 2 bits of the MCS field of DCI (Downlink Control Information ) Format 0_0 (Format 0_0) that schedules the retransmission.

In some embodiments, the disclosure proposes a retransmission information indication technical scheme for MSG3 retransmission for MCS index indication of retransmission in MSG3 retransmission. The technical scheme can give consideration to the complexity and the precision requirement of signaling indication, can more accurately indicate the related information of repeated transmission, and has good practicability.

For example, the resource configuration of MSG3 retransmission may be indicated by DCI format 0_0. The CRC (Cyclic Redundancy Check ) of the DCI may be scrambled by a TC-RNTI (Temporary Cell-Radio Network Temporary Identifier, temporary Cell network Temporary identifier).

For example, the number of retransmissions of MSG3 retransmission may be indicated by the MCS. The MCS field may contain 5 bits in total. When MSG3 retransmission is enabled, the highest 2 bits of the MCS field are used to indicate the number of repeated transmissions, and the remaining 3 bits may be used to indicate the MCS index.

For example, the technical solution of the present disclosure may be implemented by the following embodiments.

Fig. 1 illustrates a flow chart of some embodiments of a method of repeating transmissions of messages of the present disclosure.

As shown in fig. 1, in step 110, control information is transmitted to a UE that needs to retransmit a user equipment identification message, and an MCS field in the control information includes indication information of the number of repeated transmissions and indication information of an MCS index. For example, the ue identification message is MSG3 in the ue random access procedure.

For example, the UE determines a specific number of repeated transmissions according to the highest 2 bits (i.e., 2 bits MSBs) of the MCS field; the specific MCS index is determined according to the lowest 3 bits (i.e., 3 bit LSBs) of the MCS field.

For example, the MCS index set is a first MCS index set or a second MCS index set, and the first MCS index set is an MCS index set adopted when the UE first transmits the user equipment identification message.

In some embodiments, 1 bit (e.g., the least significant bit) of the least significant 3 bits of the MCS field is an "MCS index set indication" for indicating the MCS index set used. If the bit value is "0", then indicating that the first MCS index set is used; the bit value is "1", indicating that the second MCS index set is used.

For example, the first MCS index set is an MCS index set used when MSG3 is initially transmitted. As the first MCS index set may contain 4 elements, it may be configured through RRC signaling or with default configuration.

In some embodiments, the intersection of the second MCS index set and the first MCS index set is an empty set. For example, the second MCS index set is another MCS index set that is different from the first MCS index set. The intersection of the second MCS index set and the first MCS index set is an empty set.

In some embodiments, the elements in the second MCS index set are configured by RRC or are configured with default. For example, elements in the second MCS index set are configured by RRC or take a pre-configured fixed value.

For example, the elements in the second MCS index set are determined by at least one of: the determination is based on a sum or difference of elements in the first MCS index set and the first parameter, or based on a product or quotient of elements in the first MCS index set and the second parameter.

In some embodiments, the elements in the first MCS index set are processed with corresponding parameters and then modulo-processed to determine the elements in the second MCS index set. For example, the arithmetic processing may include addition operations, difference operations, product operations, quotient operations, or other types of operations.

For example, the first parameter and the second parameter are fixed values configured in advance, or the first parameter and the second parameter are configured by RRC (Radio Resource Control ).

In some embodiments, the elements in the second MCS index set are calculated from the elements in the first MCS index set. For example, elements in the second MCS index set may be determined by one or more of the following in combination: the elements in the second MCS index set are each added with an identical offset value, which is a predefined fixed value or a value configured by RRC, to the elements in the first MCS index set; or multiplying each element in the first MCS index set by a same factor, the factor being a predefined fixed value or a value configured by RRC; or performing other types of operation processing by the elements in the first MCS index set, and then performing modular operation determination.

In some embodiments, the remaining 2 bits outside of the "MCS index set indication" of the MCS field are utilized to indicate a particular index in the MCS index set. For example, when the "MCS index set indicates" bit value of "0", the remaining 2 bits indicate one of 4 indexes in the first MCS index set; when the "MCS index set indicates a" bit value of "1", the remaining 2 bits indicate one of 4 indexes in the second MCS index set.

In some embodiments, the correspondence between the index value in the first MCS index set and the MCS field may be as shown in table 1.

TABLE 1

For example, the lowest 3-bit value of the MCS field is "110". The UE uses a first MCS index set according to the indication of the lowest bit value of 0; the UE determines to use an MCS index with an index value of 3 in the first MCS index set according to the remaining 2 bit value of "11".

In some embodiments, the lowest 3-bit value of the MCS field is "011". The UE uses a second MCS index set according to the least significant bit being '1'; the second MCS index set is determined by an element of the first MCS index set plus an offset value.

For example, if the offset value is set to 6, the correspondence between the index value and the MCS field in the second MCS index set is shown in table 2.

TABLE 2

For example, the UE determines the MCS index value to be the MCS index number 7 according to the remaining two bit value of "01".

In some embodiments, the lowest 3-bit value of the MCS field is "101". The UE uses a second MCS index set according to the least significant bit value of '1'; the second MCS index set is determined by multiplying an element of the first MCS index set by a factor plus an offset value.

For example, if the factor is set to 5 and the offset value locates 5, the correspondence between the index value and the MCS field in the second MCS index set is shown in table 3.

TABLE 3 Table 3

For example, the UE determines the MCS index value to be the MCS index number 15 according to the remaining two bit value of "10".

For example, a specific MCS index is directly specified according to the lowest 3 bits of the MCS field. The 3 bits may indicate one of 8 indices in the third MCS index set. The third MCS index set may be configured by RRC, or by default.

In some embodiments, the index value in the third MCS index set corresponds to the MCS field as shown in table 4.

TABLE 4 Table 4

For example, if the lowest 3-bit value of the MCS field is "101", the UE determines the MCS index value to be the MCS index number 5.

In some embodiments, the network device schedules the user device for repeated transmission of MSG3 retransmissions.

In some embodiments, in step 120, the UE retransmits the user equipment identification message according to the control information.

For example, the user equipment parses the corresponding control information, including the MCS field. The user equipment determines the repeated transmission times according to a plurality of bits of the highest bit of the MCS field; the corresponding MCS index is determined according to a number of bits of the lowest bit of the MCS field.

Fig. 2 illustrates a flow chart of further embodiments of a method of repeating transmissions of messages of the present disclosure.

As shown in fig. 2, in step 210, the network device schedules the user device for repeated transmission of MSG3 retransmissions.

In step 220, the user parses the corresponding control information, including the MCS field, determines the number of repeated transmissions according to the most significant bits of the MCS field, and determines the corresponding MCS index according to the least significant bits of the MCS field.

The 1 bit (e.g., the least significant bit) of the least significant 3 bits of the MCS field is the "MCS index set indication", i.e., the indication bit, for indicating the MCS index set used. If the bit value is "0", then step 230 is performed; if the bit value is "1", step 240 is performed.

In step 230, the UE determines to use one index of the first MCS index set based on the remaining lowest bit indication.

In step 240, the UE determines to use one index of the second MCS index set based on the remaining lowest bit indication.

Fig. 3 illustrates a flow chart of yet other embodiments of a method of repeating transmissions of messages of the present disclosure.

As shown in fig. 3, in some embodiments, the UE receives control information from the network device in step 310. The MCS field in the control information includes indication information of the number of repeated transmissions and indication information of an MCS index.

In step 320, the UE retransmits the UE identification message according to the control information sent from the network device.

Fig. 4a illustrates a block diagram of some embodiments of a network device of the present disclosure.

As shown in fig. 4a, the network device 4a includes: a sending unit 4a, configured to send control information to a UE that needs to resend the UE identification message, so that the UE repeatedly transmits the UE identification message according to the control information, where a modulation coding strategy MCS field in the control information includes indication information of the number of repeated transmissions and indication information of an MCS index.

In some embodiments, the network device 4a further comprises a configuration unit (not shown in the figure) for configuring elements in the second MCS index set, the third MCS index set, the first parameter, the second parameter, etc.

Fig. 4b shows a block diagram of some embodiments of a user device of the present disclosure.

As shown in fig. 4b, the user equipment 4b comprises: and the transmission unit 41b is configured to retransmit the user equipment identification message according to control information sent by the network equipment, where an MCS field in the control information includes indication information of the number of repeated transmissions and indication information of an MCS index.

In some embodiments, the user equipment 4b further comprises a receiving unit (not shown in the figure) for receiving control information and the like sent by the network equipment.

Fig. 5 illustrates a block diagram of some embodiments of an electronic device of the present disclosure.

As shown in fig. 5, the electronic apparatus 5 of this embodiment includes: a memory 51 and a processor 52 coupled to the memory 51, the processor 52 being configured to perform the method of repeated transmission of messages on the network device side or the method of repeated transmission of messages measured by the user device in any of the above embodiments based on instructions stored in the memory 51.

The memory 51 may include, for example, a system memory, a fixed nonvolatile storage medium, and the like. The system memory stores, for example, an operating system, application programs, boot Loader, database, and other programs.

Fig. 6 shows a block diagram of further embodiments of the electronic device of the present disclosure.

As shown in fig. 6, the electronic device 6 of this embodiment includes: a memory 610 and a processor 620 coupled to the memory 610, the processor 620 is configured to perform the method of repeated transmission of messages on the network device side or the method of repeated transmission of messages measured by the user device in any of the above embodiments based on the instructions stored in the memory 610.

The memory 610 may include, for example, system memory, fixed nonvolatile storage media, and the like. The system memory stores, for example, an operating system, application programs, boot Loader, and other programs.

The electronic device 6 may also include an input-output interface 630, a network interface 640, a storage interface 650, and the like. These interfaces 630, 640, 650 and the memory 610 and processor 620 may be connected by, for example, a bus 660. The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, a touch screen, a microphone, and a speaker. Network interface 640 provides a connection interface for various networking devices. The storage interface 650 provides a connection interface for external storage devices such as SD cards, U-discs, and the like.

As shown in fig. 7, the repeated transmission system 7 of the message includes: a network device 71 for executing the repeated transmission method of the message on the network device side in any of the above embodiments; the ue 72 is configured to perform the method for repeated transmission of the message measured by the ue in any of the above embodiments.

It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media including, but not limited to, disk storage, CD-ROM, optical storage, and the like, having computer-usable program code embodied therein.

Up to this point, the retransmission method of the message, the network device, the user device, the retransmission system of the message, the electronic device, and the non-volatile computer-readable storage medium according to the present disclosure have been described in detail. In order to avoid obscuring the concepts of the present disclosure, some details known in the art are not described. How to implement the solutions disclosed herein will be fully apparent to those skilled in the art from the above description.

The methods and systems of the present disclosure may be implemented in a number of ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, firmware. The above-described sequence of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the sequence specifically described above unless specifically stated otherwise. Furthermore, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method of repeated transmission of a message, comprising:

transmitting control information to User Equipment (UE) needing to retransmit the UE identification information so that the UE retransmits the UE identification information according to the control information, wherein a Modulation and Coding Strategy (MCS) field in the control information comprises indication information of the number of repeated transmission and indication information of an MCS index,

wherein, the liquid crystal display device comprises a liquid crystal display device,

the indication bits in the indication information of the MCS indexes are used for indicating an MCS index set where the MCS indexes are located, the MCS index set is a first MCS index set or a second MCS index set, the intersection of the second MCS index set and the first MCS index set is an empty set, the elements in the second MCS index set are determined by calculating according to the elements in the first MCS index set, and the elements in the second MCS index set are determined by at least one of the following ways:

determined according to the sum or difference of the elements in the first MCS index set and the first parameter, or

Is determined from a product or quotient of an element in the first MCS index set and a second parameter.

2. The repeated transmission method according to claim 1, wherein,

other bits in the indication information of the MCS index are used to indicate an index value of the MCS index in the MCS index set.

3. The retransmission method according to claim 1, wherein the first MCS index set is an MCS index set employed when the UE first transmits the user equipment identification message.

4. The repeated transmission method according to claim 1, wherein,

the first parameter and the second parameter are fixed values which are pre-configured, or

The first parameter and the second parameter are configured by RRC.

5. The repeated transmission method according to claim 1, wherein the indication information is used to indicate the MCS index in a third MCS index set, the third MCS index set being a default MCS index set configured in advance or the third MCS index set being configured by RRC.

6. The retransmission method according to any of claims 1-5, wherein a first bit in the MCS field comprises the indication of the number of retransmissions, a second bit comprises the indication of the MCS index, the first bit comprises at least one most significant bit MSB, and the second bit comprises at least one least significant bit LSB.

7. The repeated transmission method according to any of claims 1-5, wherein the user equipment identification message is message MSG3 in a random access procedure of the user equipment.

8. A method of repeated transmission of a message, comprising:

the user equipment UE re-transmits the user equipment identification information according to the control information sent by the network equipment, wherein the modulation coding strategy MCS field in the control information comprises the indication information of the repeated transmission times and the indication information of the MCS index,

9. A network device, comprising:

a sending unit, configured to send control information to a UE that needs to resend a UE identification message, so that the UE retransmits the UE identification message according to the control information, where a modulation and coding scheme MCS field in the control information includes indication information of a number of repeated transmissions and indication information of an MCS index,

10. A user equipment, comprising:

a transmission unit, configured to re-perform repeated transmission of the ue identification message according to control information sent by the network device, where a modulation and coding scheme MCS field in the control information includes indication information of a number of repeated transmissions and indication information of an MCS index,

11. A system for repeated transmission of messages, comprising:

network device for performing the repeated transmission method of messages according to any of claims 1 to 7;

a user equipment for performing the method for repeated transmission of messages according to claim 8.

12. An electronic device, comprising:

a memory; and

a processor coupled to the memory, the processor configured to perform the method of repeating the message of any one of claims 1-7, or the method of repeating the message of claim 8, based on instructions stored in the memory.

13. A non-transitory computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of repeated transmission of a message according to any one of claims 1 to 7, or the method of repeated transmission of a message according to claim 8.