CN109587730A

CN109587730A - A kind of information indicating method, user equipment and base station

Info

Publication number: CN109587730A
Application number: CN201710899327.0A
Authority: CN
Inventors: 谌丽
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT
Priority date: 2017-09-28
Filing date: 2017-09-28
Publication date: 2019-04-05
Also published as: TW201916653A; TWI693813B; WO2019062562A1

Abstract

The embodiment of the present invention provides a kind of information indicating method, user equipment and base station, this method comprises: user equipment, which receives, carries filling bit padding instruction information in media access control random access response protocol Data Unit MAC the RAR PDU, the MAC RAR PDU that base station is sent；The user equipment indicates information according to the padding in the MAC RAR PDU, determines the padding in the MAC RAR PDU.In this way, user equipment can indicate that information determines the padding in MAC RAR PDU according to the padding in MAC RAR PDU, avoids carrying out unnecessary parsing to the part padding, the power consumption of user equipment can be saved；Meanwhile, it is capable to avoid user equipment to the unpredictable consequence of padding error resolution bring, such as erroneous judgement random access response and random access failure caused by carrying out uplink according to erroneous judgement or interference etc. is generated to other users.

Description

Information indication method, user equipment and base station

Technical Field

The present invention relates to the field of communications technologies, and in particular, to an information indication method, a user equipment, and a base station.

Background

In an LTE (Long Term Evolution) system, a MAC RAR PDU (Media Access control Random Access Response Protocol Data Unit) is composed of a MAC header (MAC header) and a MAC load (MAC payload). When the size of the scheduling resource is larger than the size of the resource required by the MAC header and the MAC payload, the remaining part needs to be filled with padding bits (i.e., padding). After receiving the MAC RAR PDU, a User Equipment (UE) may obtain the size of the MAC header and the size of the MAC load, and then subtract the sum of the MAC header and the MAC load (MAC payload) according to the size of the MAC RAR PDU, to obtain the size of padding.

In the next generation mobile communication system, a MAC RAR PDU (Media Access Control Random Access response Protocol Data Unit) is composed of a plurality of MAC sub-PDUs (MAC sub-PDUs), and each MAC sub-PDU has an independent indication function. However, due to the above MAC RAR PDU structure, the ue cannot determine padding in the MAC RAR PDU, for example, assuming that padding is all 1, the ue considers it as a MAC sub-PDU and follows the MAC sub-PDU during parsing, which is prone to error and increases the power consumption of the ue.

Therefore, in the next generation mobile communication system, the ue cannot determine the padding in the MAC RAR PDU, and when the padding in the MAC RAR PDU is encountered, unnecessary parsing is performed, which increases the power consumption of the ue.

Disclosure of Invention

The embodiment of the invention provides an information indication method, user equipment and a base station, which are used for solving the problem that the user equipment cannot determine filling bits in an MAC RAR PDU.

The embodiment of the invention provides an information indication method, which is applied to user equipment and comprises the following steps:

receiving a media access control random access response protocol data unit (MAC RAR PDU) sent by a base station, wherein the MAC RAR PDU carries filling bit padding indication information;

and determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

Optionally, the MAC RAR PDU includes one or more MAC sub-PDUs, where the MAC sub-PDUs at least include non-padding MAC sub-PDUs, each non-padding MAC sub-PDU includes a MAC subheader, and each MAC subheader carries padding indication information used for indicating whether a current MAC sub-PDU is padding or not.

Optionally, an E field occupying 1bit in each MAC subheader is used to indicate whether padding is behind the current MAC sub-pdu.

Optionally, the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU includes:

analyzing an E domain in an MAC subheader of each MAC subPDU;

and if the E field in the MAC subheader of the target MAC subPDU is a first preset value, determining that padding is behind the target MAC subPDU.

Optionally, the MAC RAR PDU includes one or more MAC sub-PDUs, each MAC sub-PDU includes a MAC subheader, and each MAC subheader carries padding indication information used for indicating whether the current MAC sub-PDU is padding.

Optionally, the E field occupying 1bit in each MAC subheader is used to indicate whether the current MAC sub-pdu is padding.

analyzing an E domain in an MAC subheader of each MAC subPDU;

and if the E field in the MAC subheader of the target MAC subPDU is a second preset value, determining that the target MAC subPDU is padding.

Optionally, the condition that each MAC subheader carries a random access preamble sequence RAPID is used to indicate whether the current MAC sub pdu is padding.

analyzing the MAC subheader of each MAC subPDU, and judging whether each MAC subheader carries an RAPID or not;

if the RAPID is carried in the MAC subheader of the target MAC subPDU, judging whether the RAPID carried in the MAC subheader of the target MAC subPDU is a third preset value or not;

and if the RAPID carried in the MAC subheader of the target MAC subPDU is the third preset value, determining that the target MAC subPDU is padding.

Optionally, whether the current MAC sub-pdu is padding is indicated by using the T field occupying 1bit and the T1 field occupying 1bit in each MAC subheader.

analyzing the T domain in the MAC subheader of each MAC subPDU, and judging whether the T domain in the MAC subheader of each MAC subPDU is a fourth preset value or not;

if the T field in the MAC subheader of the target MAC subPDU is the fourth preset value, analyzing the T1 field in the MAC subheader of the target MAC subPDU, and judging whether the T1 field in the MAC subheader of the target MAC subPDU is the fifth preset value or not;

and if the T1 field in the MAC subheader of the target MAC subPDU is the fifth preset value, determining that the MAC subPDU is padding.

The embodiment of the invention also provides an information indication method, which is applied to a base station and comprises the following steps:

constructing a media access control random access response protocol data unit (MAC RAR PDU) carrying padding bit padding indication information;

and sending the MAC RAR PDU to user equipment.

Optionally, the constructing of the MAC RAR PDU carrying the padding indication information includes:

and if padding is carried out after the target MAC sub PDU, setting an E field occupying 1bit in an MAC subheader of the target MAC sub PDU as a first preset value.

and if the target MAC sub PDU is padding, setting an E field occupying 1bit in an MAC subheader of the target MAC sub PDU as a second preset value.

if the target MAC sub PDU is padding, setting the MAC sub head of the target MAC sub PDU as the MAC sub head carrying RAPID, and setting the RAPID in the MAC sub head of the target MAC sub PDU as a third preset value.

if the target MAC sub-PDU is padding, setting a T field occupying 1bit in the MAC sub-header of the target MAC sub-PDU as a fourth preset value, and setting a T1 field occupying 1bit in the MAC sub-header of the target MAC sub-PDU as a fifth preset value.

An embodiment of the present invention further provides a user equipment, including:

a receiving module, configured to receive a MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

and the determining module is used for determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

An embodiment of the present invention further provides a base station, including:

a constructing module, configured to construct a media access control random access response protocol data unit MAC RAR PDU carrying padding bit padding indication information;

and the sending module is used for sending the MAC RAR PDU to user equipment.

An embodiment of the present invention further provides a user equipment, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor,

the transceiver is configured to receive a MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

the transceiver is further configured to determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU;

or,

the processor is used for reading the program in the memory and executing the following processes: and determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

analyzing an E domain in an MAC subheader of each MAC subPDU;

An embodiment of the present invention further provides a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor,

the processor is used for reading the program in the memory and executing the following processes:

and the transceiver is used for sending the MAC RAR PDU to user equipment.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, and when the program is executed by a processor, the program realizes the steps in the information indication method of the user equipment side provided by the embodiment of the invention; alternatively, the program implements the steps in the information indication method on the base station side provided in the embodiment of the present invention when executed by the processor.

In the embodiment of the invention, user equipment receives a media access control random access response protocol data unit MAC RAR PDU sent by a base station, wherein the MAC RAR PDU carries padding indication information; and the user equipment determines padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU. Therefore, the user equipment can determine the padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU, unnecessary analysis on the padding part is avoided, and the power consumption of the user equipment can be saved; meanwhile, unpredictable results brought by the user equipment to padding error analysis can be avoided, for example, random access failure caused by misjudgment of random access response and uplink transmission according to misjudgment or interference on other users can be avoided.

Drawings

FIG. 1 is a schematic diagram of a network architecture to which embodiments of the present invention are applicable;

fig. 2 is a diagram of a contention random access procedure;

fig. 3 is a diagram of a non-contention random access procedure;

fig. 4 is a schematic diagram of a MAC RAR PDU structure in an LTE system;

fig. 5 is a schematic diagram of a MAC subheader structure carrying RAPID in an LTE system;

FIG. 6 is a diagram of a structure of a BI-carrying MAC subheader in an LTE system;

fig. 7 is a schematic diagram of a MAC RAR structure in an LTE system;

fig. 8 is a schematic structural diagram of a MAC RAR PDU in the next generation mobile communication system according to an embodiment of the present invention;

FIG. 9 is a flowchart illustrating steps of a method for indicating information according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a MAC RAR PDU including padding according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another MAC RAR PDU including padding according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a MAC padding sub-header according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a MAC subheader carrying RAPID according to an embodiment of the present invention;

FIG. 14 is a diagram illustrating a structure of a MAC subheader carrying BI according to an embodiment of the present invention;

FIG. 15 is a diagram illustrating a structure of another BI-bearing MAC subheader according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another MAC padding sub-header provided in the embodiment of the present invention;

fig. 17 is a flowchart illustrating another information indication method according to an embodiment of the present invention;

fig. 18 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 19 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 20 is a schematic structural diagram of another user equipment provided in an embodiment of the present invention;

fig. 21 is a schematic structural diagram of another base station according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1, fig. 1 is a schematic diagram of a network structure to which the embodiment of the present invention is applicable, and as shown in fig. 1, the network structure includes a User Equipment (UE) 11 and a base station 12, where the User Equipment 11 may be a terminal-side Device such as a Mobile phone, a tablet personal Computer (tablet personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that a specific type of the User Equipment 11 is not limited in the embodiment of the present invention. The base station 12 may be, for example: a macro station, an LTE eNB, a 5G NR NB (fifth generation mobile communication system base station), and the like, it should be noted that the specific type of the base station 12 is not limited in the embodiment of the present invention.

Contention random access for LTE systems is used for the following purposes: user equipment is initially accessed; RRC (Radio resource control) connection re-establishment or handover; downlink data arrives in an RRC connected state in an asynchronous state; uplink data arrives in the RRC connected state; positioning in RRC connected state. The next generation mobile communication system (NR) also introduces the purposes of system message request, inactive UE (inactive UE) connection recovery, etc.

Referring to fig. 2, fig. 2 is a schematic diagram of a contention random access procedure, as shown in fig. 2, the contention random access procedure mainly includes:

the Msg201, the user equipment selects a Random Access Preamble (Random Access Preamble) and a Physical Random Access Channel (PRACH), and transmits the selected Random Access Preamble to the base station on the selected PRACH resource. In the NR, a specific random access preamble and/or PRACH resource may be reserved for Msg201based system message request (Msg201based request).

The Msg202 and the base station receive the random access request (i.e. Msg201) sent by the user equipment, and send a random access response to the user equipment. The random access response may include an uplink timing advance, an uplink resource scheduling signaling (UL grant) allocated for uplink scheduling transmission, and a temporary C-RNTI (Cell Radio network temporary Identifier) allocated by the network side to the ue. A PDCCH (Physical Downlink Control Channel) carrying the scheduling message of the Msg202 may be scrambled with an RA-RNTI (random access Radio Network Temporary Identifier). The Msg202 may also carry a preamble ID (preamble ID), and the user equipment may determine whether the Msg202 corresponds to the Msg201 sent by the user equipment through the RA-RNTI and the preamble ID.

In NR, for a system message request based on Msg201, Msg202 may include only preamble ID information corresponding to Msg201, and not include other contents. In addition, in NR, for the system message request scenario based on Msg201, the random access procedure ends up to Msg202, i.e. if the received Msg202 includes the preamble ID corresponding to the preamble sent by Msg201, the system message request procedure based on Msg201 is considered to be completed.

Msg203 and the user equipment send uplink transmission on the UL grant specified by Msg202, and Msg203 transmits uplink transmission with different contents for different random access reasons, for example, for initial access, Msg203 transmits an RRC connection establishment request.

The user equipment can judge whether random access is successful according to the Msg204, and for the initially accessed user equipment, after the Contention Resolution is successful, the temporary C-RNTI of the user equipment in the cell is automatically converted into the unique user equipment identifier C-RNTI of the user equipment in the cell.

The non-contention random access is used for handover, downlink data arrival, positioning, and uplink timing acquisition. Referring to fig. 3, fig. 3 is a schematic diagram of a non-contention random access procedure, as shown in fig. 3, the non-contention random access procedure mainly includes:

msg301, the base station sends a random access Preamble sequence allocation (RA Preamble assignment) message to the user equipment, where the RA Preamble sequence allocation message includes a dedicated Preamble for non-contention random access and PRACH resource used for random access, which are allocated by the base station to the user equipment.

And the Msg302 and the user equipment send the specified special preamble to the base station on the specified PRACH resource according to the indication of the Msg 301. After receiving the Msg302, the base station can calculate the uplink timing advance TA according to the Msg 302.

The Msg303 and the base station send a random access response to the user equipment, wherein the random access response comprises timing advance information and a subsequent uplink transmission resource allocation UL grant, and the timing advance is used for the user equipment to determine a timing relation of subsequent uplink transmission.

In the LTE system, the MAC RAR PDU includes a MAC header, and the MAC RAR PDU may further include a MAC payload and/or padding, where the MA payload includes one or more MAC RARs (Media Access Control random Access responses). Referring to fig. 4, fig. 4 is a schematic structural diagram of a MAC RAR PDU in an LTE system, where, as shown in fig. 4, a MAC header includes one or more MAC subheaders, and at most one MAC subheader carrying a BI (Backoff Indicator) may be included in one MAC RAR PDU, that is, the BIsubheader shown in fig. 4. The MAC subheader carrying the BI does not correspond to the MAC RAR, and other MAC subheaders respectively correspond to one MAC RAR. When the size of the scheduling resource is equal to the size of the MAC header and the size of the resource required by the MAC RAR, the MAC RAR PDU does not need to be filled; when the size of the scheduling resource is larger than the size of the resource required by the MAC header and the MAC RAR, the remaining part needs to be filled with padding bits, i.e., padding. That is, one MAC RAR PDU may or may not include padding, that is, padding in fig. 4 is optional (opt).

The MAC subheader format in the LTE system includes two types, one type is a MAC subheader carrying BI, and the other type is a MAC subheader carrying RAPID (Random Access preamble ID), such as RAPID subframe header in fig. 4, where the subheader carrying RAPID always corresponds to a MAC RAR.

The MAC subheader carrying RAPID is an E/T/RAPID subheader, i.e. includes an E domain, a T domain and RAPID, and the structure of the MAC subheader carrying RAPID is shown in fig. 5. The MAC subheader carrying the BI is E/T/R/R/BI subheader, namely comprising an E field, a T field, a reserved bit R and the BI. See fig. 6 for the structure of the MAC subheader carrying the BI.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a MAC RAR in the LTE system, and as shown in fig. 7, the meanings of the MAC RAR in the respective domains are:

r: reserving bits;

timing Advance Command: a timing advance command, which is used for indicating the time adjustment amount of the uplink data sent by the user equipment and occupying 11 bits;

UL Grant: a resource allocation domain, which is used for indicating the uplink resource allocation and occupies 20 bits;

temporary C-RNTI: the temporary C-RNTI, is only useful for contention random access.

In the LTE system, the meaning of each domain in one MAC subheader is:

e: indicating the type of the subsequent information of the MAC subheader, i.e. indicating whether the subsequent information of the MAC subheader is the MAC subheader or the MAC payload;

t: indicating whether the MAC subheader is a BI subheader or a RAR subheader;

RAPID: corresponding to preamble ID in the random access request;

BI: and (4) indicating rollback.

In LTE, after receiving a MAC RAR PDU, a user equipment may parse the MAC header to obtain the size of the MAC header and the MA load, and then subtract the sum of the MAC header and the MAC load (MAC payload) from the size of the MAC RAR PDU to obtain the size of padding.

In the next generation mobile communication system (e.g., 5G NR, fifth generation mobile communication system), the structure of the MAC RAR PDU is changed to include a plurality of MAC sub-PDUs (MAC sub-PDUs), each of which has an independent indication function, as shown in fig. 8.

The MAC sub pdu includes the following three types:

indicating the MAC subPDU of the BI, wherein the MAC subPDU only has one MAC subheader;

indicating MAC subPDU of the MAC RAR, wherein the MAC subPDU comprises an MAC subheader and the MAC RAR;

and the MAC sub PDU which indicates the response of the system message request only has one MAC subheader.

However, since the MAC RAR PDU of the 5G NR includes one or more MAC subpdus, the user terminal cannot deduce the size of the padding portion from the MAC subpdus. In view of the above problems, embodiments of the present invention provide an information indicating method, and the present invention will be described in detail with reference to specific embodiments.

Referring to fig. 9, fig. 9 is a flowchart of an information indicating method according to an embodiment of the present invention, where the method is applied to a user equipment, and as shown in fig. 9, the method includes:

step 901, receiving a MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information.

Step 902, determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

In the embodiment of the invention, after user equipment sends a random access request to a base station, the base station constructs an MAC RAR PDU carrying padding indication information according to the size of data to be sent and the size of scheduling resources, and sends the MAC RAR PDU to the user equipment. The user equipment receives MAC RAR PDU sent by a base station, and determines padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU.

The MAC RAR PDU includes one or more MAC sub-PDUs, the padding indication information may be carried in a MAC subheader of the MAC sub-PDU, and the padding indication information carried in the MAC subheader may indicate whether the current MAC sub-PDU is padding or not, and may also indicate whether the current MAC sub-PDU is padding or not. The current MAC sub pdu is followed by the current MAC sub pdu, i.e. starting from the next byte after the end of the current MAC sub pdu. If the current MAC sub PDU is followed by padding, it means that padding is started from the next byte after the end of the current MAC sub PDU.

The base station may carry the padding indication in the MAC subheader of the non-padding MAC sub-pdu, or introduce the MAC padding subheader, and introduce a differentiation indication bit in the MAC subheader to indicate the padding subheader.

Optionally, the MAC RAR PDU includes one or more MAC sub-PDUs, where the MAC sub-PDUs at least include non-padding MAC sub-PDUs, each non-padding MAC sub-PDU includes a MAC subheader, and each MAC subheader carries padding indication information used for indicating whether a padding MAC sub-PDU is followed by a current MAC sub-PDU.

In this embodiment, the padding indication information is carried in the MAC subheader of the non-padding MAC sub-pdu, and the padding indication information carried in the MAC subheader indicates whether padding is present after the current MAC sub-pdu.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a MAC RAR PDU provided in an embodiment of the present invention, and as shown in fig. 10, the MAC RAR PDU includes one or more MAC sub-PDUs, where the MAC sub-PDUs at least include non-padding MAC sub-PDUs, and each non-padding MAC sub-PDU includes a MAC subheader, where each MAC subheader carries padding indication information. It should be noted that, as shown in fig. 10, in this embodiment, padding is used as a special MAC sub-pdu, and there is no corresponding MAC subheader in the padding part.

Optionally, whether padding follows the current MAC sub-pdu is indicated by an E field occupying 1bit in each MAC subheader.

When padding indication information is carried in a MAC subheader of a non-padding MAC sub-pdu, and the padding indication information is used to indicate whether a current MAC sub-pdu is padded later, the method may indicate whether the current MAC sub-pdu is padded later by using an E field occupying 1bit in each MAC subheader.

The method may multiplex a MAC subheader format in the LTE system, and specifically, since the structure of the MAC RAR PDU is changed to include multiple MAC subpdus, and the role of the E-domain of the MAC subheader in the LTE system is no longer required, it may be indicated whether the next MAC subPDU is padding by using the E-domain in the MAC subheader, that is, the E-domain in the multiplexed MAC subheader indicates whether the next MAC subPDU is padding, for example, the E-domain with the first preset value is used to indicate that the next MAC subPDU is padding. In this embodiment, the MAC subheader indicating RAPID is the same as the MAC subheader indicating RAPID in the LTE system in format, as shown in fig. 5; the MAC subheader indicating the BI is the same as the MAC subheader format indicating the BI in the LTE system, as shown in fig. 6.

analyzing an E domain in an MAC subheader of each MAC subPDU;

In this embodiment, the method indicates that the next MAC sub pdu is padding by using the E field of the first preset value in the MAC subheader. Specifically, the ue parses the E field in the MAC subheader of each MAC sub pdu, and determines whether the E field in the MAC subheader of each MAC sub pdu is a first preset value; and if the E field in the MAC subheader of the target MAC subPDU is the first preset value, the user equipment determines that the target MAC subPDU is padding. And if the E field in the MAC subheader of the target MAC subPDU is not the first preset value, the user equipment determines that the target MAC subPDU is not padding.

The first preset value may be 1 or 0, which is not limited in the embodiment of the present invention. Taking the first preset value as 1 as an example, if the E field in the MAC subheader of the target MAC sub-pdu is 1, the ue determines that the target MAC sub-pdu is preceded by padding; and if the E field in the MAC subheader of the target MAC subPDU is 0, the user equipment determines that the target MAC subPDU is not padding.

It can be understood that, in this embodiment, when the base station constructs the MAC RARPDU carrying the padding indication information, if the target MAC sub-pdu is followed by padding, the base station sets the E field in the MAC subheader of the target MAC sub-pdu to the first preset value, for example, 1; if the target MAC sub PDU is not padding, the base station sets the E field in the MAC sub-header of the target MAC sub PDU not equal to the first preset value, for example 0.

Optionally, the MAC RAR PDU includes one or more MAC sub-PDUs, each MAC sub-PDU includes a MAC subheader, and each MAC subheader carries padding indication information used for indicating whether a current MAC sub-PDU is padding.

The structure of the MAC RAR PDU in this embodiment is shown in fig. 11, where the method introduces a MAC padding sub-header (padding sub-header shown in fig. 11), that is, the MAC padding sub-header and padding form a special MAC sub-PDU, and padding indication information carried in each MAC sub-header is used to indicate whether the current MAC sub-PDU is padding.

Specifically, padding indication information carried in each MAC subheader is used to indicate whether the current MAC subheader is a MAC padding subheader, and if the current MAC subheader is a MAC padding subheader, the current MAC sub-pdu is padding; and if the current MAC subheader is not the MAC padding subheader, the current MAC sub PDU is not padding.

Optionally, whether the current MAC sub-pdu is padding is indicated by using an E field occupying 1bit in each MAC subheader.

When the padding indication information in the MAC subheader is used to indicate whether the current MAC sub-pdu is padding, the method may indicate whether the current MAC sub-pdu is padding using an E field occupying 1bit in each MAC subheader.

The method may multiplex a MAC subheader format in the LTE system, and specifically, since the structure of the MAC RAR PDU is changed to include multiple MAC subpdus, and the role of the E domain of the MAC subheader in the LTE system is no longer required, it may be indicated whether the current MAC subPDU is padding by using the E domain in the MAC subheader, that is, the E domain in the multiplexed MAC subheader indicates whether the current MAC subPDU is padding, for example, the E domain with a second preset value indicates that the current MAC subPDU is padding. In this embodiment, the MAC subheader indicating RAPID is the same as the MAC subheader indicating RAPID in the LTE system in format, as shown in fig. 5; the MAC subheader indicating the BI is the same in format as the MAC subheader indicating the BI in the LTE system, as shown in fig. 6; the format of the mac padding subheader indicating padding is shown in fig. 12, wherein LCID is logical channel identity (logical channel identity) in the format shown in fig. 12.

analyzing an E domain in an MAC subheader of each MAC subPDU;

In this embodiment, the method indicates that the current MAC sub pdu is padding by using an E field of a second preset value in the MAC subheader. Specifically, the ue parses the E field in the MAC subheader of each MAC sub pdu, and determines whether the E field in the MAC subheader of each MAC sub pdu is a second preset value; and if the E field in the MAC subheader of the target MAC subPDU is the second preset value, the user equipment determines that the target MAC subPDU is padding. And if the E field in the MAC subheader of the target MAC subPDU is not the second preset value, the user equipment determines that the target MAC subPDU is not padding.

The second preset value may be 1 or 0, which is not limited in the embodiment of the present invention. Taking the second preset value as 1 as an example, if the E field in the MAC subheader of the target MAC sub-pdu is 1, the ue determines that the target MAC sub-pdu is padding; and if the E field in the MAC subheader of the target MAC subPDU is 0, the user equipment determines that the target MAC subPDU is not padding.

It can be understood that, in this embodiment, when the base station constructs the MAC RARPDU carrying the padding indication information, if the target MAC sub-pdu is padding, the base station sets the E field in the MAC subheader of the target MAC sub-pdu to the second preset value, for example, 1; if the target MAC sub-pdu is not padding, the base station sets the E field in the MAC subheader of the target MAC sub-pdu to be not equal to the second preset value, for example, 0.

Optionally, whether the current MAC sub-pdu is padding is indicated by using the condition that each MAC subheader carries a random access preamble sequence RAPID.

When the padding indication information in the MAC subheader is used to indicate whether the current MAC sub-pdu is padding, the method may indicate whether the current MAC sub-pdu is padding by using a condition that each MAC subheader carries a RAPID.

The method can multiplex the MAC subheader format indication padding indicating RAR in the LTE system, and does not use the E field in the MAC subheader any more, namely the E field in the MAC subheader is set as the R field, namely the reserved bit. In this embodiment, the MAC subheader format indicating RAR is shown in fig. 13, and the MAC subheader format indicating BI is shown in fig. 14. The method may indicate that the current MAC sub pdu is padding using RAPID of a third preset value.

In this embodiment, the method indicates that the current MAC sub-pdu is padding by using RAPID of a third preset value (for example, all 0) in the MAC subheader. Specifically, the ue parses the MAC subheader of each MAC subPDU, and determines whether each MAC subheader carries an RAPID; if the MAC subheader of the target MAC subPDU carries RAPID, the MAC subheader of the target MAC subPDU is the MAC subheader with RAR or the MAC padding subheader; the user equipment further judges whether the RAPID carried in the MAC subheader of the target MAC subPDU is a third preset value, if the RAPID carried in the MAC subheader of the target MAC subPDU is the third preset value, the user equipment determines that the target MAC subPDU is padding; if the RAPID carried in the MAC subheader of the target MAC subPDU is not the third preset value, the ue determines that the RAPID carried in the MAC subheader of the target MAC subPDU corresponds to the random access preamble sequence in the random access request message, and the MAC subheader is followed by the MAC RAR.

It can be understood that, in this embodiment, when the base station constructs the MAC RARPDU carrying the padding indication information, if the target MAC sub-pdu is padding, the base station sets the MAC sub-header of the target MAC sub-pdu to the MAC sub-header carrying the RAPID, and sets the RAPID in the MAC sub-header of the target MAC sub-pdu to the third preset value, for example, all 0.

Optionally, whether the current MAC sub-pdu is padding is indicated by using a T field occupying 1bit and a T1 field occupying 1bit in each MAC subheader.

When the padding indication information in the MAC subheader is used to indicate whether the current MAC sub-pdu is padding, the method may indicate whether the current MAC sub-pdu is padding using the T field occupying 1bit and the T1 field occupying 1bit in each MAC subheader.

The method can multiplex the MAC subheader format indication padding indicating BI in the LTE system, and does not use the E field in the MAC subheader any more, namely, the E field in the MAC subheader is set to the R field, namely, the reserved bit. In this embodiment, the MAC subheader format indicating RAR is shown in fig. 13, the MAC subheader format indicating BI is shown in fig. 15, and the MAC subheader format indicating padding is shown in fig. 16. The method may indicate that the current MAC sub pdu is padding using a T field of a fourth preset value and a T1 field of a fifth preset value.

In this embodiment, the method indicates that the current MAC sub-pdu is padding by using a T field of a fourth preset value and a T1 of a fifth preset value in the MAC subheader. Specifically, the ue parses a T field in the MAC subheader of each MAC subPDU, and determines whether the T field in the MAC subheader of each MAC subPDU is a fourth preset value; if the T field in the MAC subheader of the target MAC subPDU is not the fourth preset value, the user equipment determines that the MAC subheader of the target MAC subPDU is the MAC subheader indicating RAR and is not the MAC padding subheader; if the T field in the MAC subheader of the target MAC subPDU is the fourth preset value, the user equipment determines that the MAC subheader of the target MAC subPDU is the MAC padding subheader or the MAC subheader of the indication BI, the user equipment further analyzes the T1 field in the MAC subheader of the target MAC subPDU and judges whether the T1 field in the MAC subheader of the target MAC subPDU is the fifth preset value; if the T1 field in the MAC subheader of the target MAC sub pdu is the fifth preset value, the ue determines that the target MAC sub pdu is padding; and if the T1 field in the MAC subheader of the target MAC subPDU is not the fifth preset value, the user equipment determines that the MAC subheader of the target MAC subPDU is the MAC subheader indicating the BI.

It can be understood that, in this embodiment, when the base station constructs the MAC RARPDU carrying the padding indication information, if the target MAC sub-pdu is padding, the base station sets the T field in the MAC subheader of the target MAC sub-pdu to the fourth preset value (e.g., 0), and sets the T1 field occupying 1bit in the MAC subheader of the target MAC sub-pdu to the fifth preset value (e.g., 0).

In the embodiment of the invention, user equipment receives a media access control random access response protocol data unit MAC RAR PDU sent by a base station, wherein the MAC RAR PDU carries padding indication information; and the user equipment determines padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU. Therefore, the user equipment can determine the padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU, avoid unnecessary analysis of the padding part, save the power consumption of the user equipment, and ensure that the user equipment can correctly and effectively receive the random access response without missing effective information; meanwhile, unpredictable results brought by the user equipment to padding error analysis can be avoided, for example, random access failure caused by misjudgment of random access response and uplink transmission according to misjudgment or interference on other users can be avoided.

Referring to fig. 17, fig. 17 is a flowchart of another information indication method according to an embodiment of the present invention, where the method is applied to a base station, and as shown in fig. 17, the method includes:

step 1701, constructing a MAC RAR PDU carrying padding indication information.

Step 1702, sending the MAC RAR PDU to the ue.

It should be noted that, this embodiment is used as an implementation of the base station side corresponding to the embodiment shown in fig. 9, and specific implementation thereof may refer to the relevant description of the embodiment shown in fig. 9, so that, in order to avoid repeated description, the present embodiment is not described again, and the same beneficial effects may also be achieved.

Referring to fig. 18, fig. 18 is a structural diagram of a user equipment according to an embodiment of the present invention, and as shown in fig. 18, the user equipment 1800 includes:

a receiving module 1801, configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

a determining module 1082, configured to determine padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

Optionally, the determining module 1082 determines padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU, including:

analyzing an E domain in an MAC subheader of each MAC subPDU;

It should be noted that, in this embodiment, the user equipment 1800 may be the user equipment in any implementation manner in the method embodiment in the embodiment of the present invention, and any implementation manner of the user equipment in the method embodiment in the embodiment of the present invention may be implemented by the user equipment 1800 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Referring to fig. 19, fig. 19 is a structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 19, a base station 1900 includes:

a constructing module 1901, configured to construct a MAC RAR PDU carrying padding bit padding indication information;

a sending module 1902, configured to send the MAC RAR PDU to a user equipment.

Optionally, the constructing module 1901 constructs a MAC RAR PDU carrying padding indication information, including:

It should be noted that, in this embodiment, the base station 1900 may be a base station of any implementation manner in the method embodiment in the present invention, and any implementation manner of the base station in the method embodiment in the present invention may be implemented by the base station 1900 in this embodiment, and the same beneficial effects are achieved, and details are not described here.

Referring to fig. 20, fig. 20 is a structural diagram of another ue according to an embodiment of the present invention, and as shown in fig. 20, the ue includes: a transceiver 2010, a memory 2020, a processor 2000 and a computer program stored on the memory 2020 and executable on the processor, wherein:

the transceiver 2010, configured to receive measurement configuration information sent by a base station, where the measurement configuration information is measurement configuration information of a synchronization signal block actually sent on at least one bandwidth part BWP, and when the user equipment receives the measurement configuration information, the user equipment operates at the BWP where the synchronization signal block is not sent;

the transceiver 2010 is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

the transceiver 2010 is further configured to determine padding in the MAC RAR PDU according to padding indication information in the MAC RAR PDU;

or,

the processor 2000 is configured to read a program in the memory, and execute the following processes: and determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU.

As can be seen from the above, the determining, according to the padding indication information in the MAC RAR PDU, the padding in the MAC RAR PDU may be performed by the transceiver 2010 or the processor 2000.

Among other things, a transceiver 2010 for receiving and transmitting data under the control of the processor 2000.

In fig. 20, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 2000, and various circuits, represented by memory 2020, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 2010 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 2000 is responsible for managing the bus architecture and general processing, and the memory 2020 may store data used by the processor 2000 in performing operations.

It is to be appreciated that the memory 2020 is not limited to only one type of device on the user device and that the memory 2020 and the processor 2000 may be separate and distinct geographic locations.

analyzing an E domain in an MAC subheader of each MAC subPDU;

It should be noted that, in this embodiment, the user equipment may be the user equipment in any implementation manner in the method embodiment in the embodiment of the present invention, and any implementation manner of the user equipment in the method embodiment in the embodiment of the present invention may be implemented by the user equipment in this embodiment, so as to achieve the same beneficial effects, and details are not described here.

Referring to fig. 21, fig. 21 is a structural diagram of another base station provided in the present invention, and as shown in fig. 21, the base station includes: a transceiver 2110, a memory 2120, a processor 2100, and a computer program stored on the memory 2120 and executable on the processor, wherein:

the processor 2100 is configured to read a program in a memory and execute the following processes:

the transceiver 2110 is configured to send the MAC RAR PDU to a user equipment.

Among other things, a transceiver 2110 for receiving and transmitting data under the control of the processor 2100.

In FIG. 21, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by the processor 2100 and memory represented by the memory 2120. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 2110 may be a plurality of elements including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

The processor 2100 is responsible for managing the bus architecture and general processing, and the memory 2120 may store data used by the processor 2100 in performing operations.

It should be noted that the memory 2120 is not limited to only one device on the user device, and the memory 2120 and the processor 2100 may be separated in different geographical locations.

It should be noted that, in this embodiment, the base station may be a base station of any implementation manner in the method embodiment in the present invention, and any implementation manner of the base station in the method embodiment in the present invention may be implemented by the base station in this embodiment, and the same beneficial effects are achieved, and details are not described here.

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the information indication method on the user equipment side provided by the embodiment of the present invention.

The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the information indication method on the base station side provided in the embodiment of the present invention.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the transceiving method according to various embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. An information indication method applied to a user equipment includes:

2. The method of claim 1, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information for indicating whether padding is followed by a current MAC sub-PDU.

3. The method of claim 2 wherein an E field occupying 1bit in each MAC subheader is used to indicate whether a current MAC subPDU is followed by padding.

4. The method as claimed in claim 3, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

analyzing an E domain in an MAC subheader of each MAC subPDU;

5. The method of claim 1, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information for indicating whether a current MAC sub-PDU is padding.

6. The method of claim 5, wherein an E field occupying 1bit in each MAC subheader is utilized to indicate whether a current MAC subpDU is padding.

7. The method as claimed in claim 6, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

analyzing an E domain in an MAC subheader of each MAC subPDU;

8. The method of claim 5, wherein the condition that each MAC subheader carries a random access preamble sequence RAPID is used to indicate whether a current MAC subpPDU is padding.

9. The method as claimed in claim 8, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

10. The method of claim 5 wherein the T field occupying 1bit and the T1 field occupying 1bit in each MAC subheader are used to indicate whether the current MAC subpDU is padding.

11. The method as claimed in claim 10, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

if the T domain in the MAC subheader of the target MAC subPDU is the fourth preset value, analyzing the T1 domain in the MAC subheader of the target MAC subPDU, and judging whether the T1 domain in the MAC subheader of the target MAC subPDU is the fifth preset value or not;

12. An information indication method, applied to a base station, includes:

and sending the MAC RAR PDU to user equipment.

13. The method of claim 12, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information for indicating whether padding is followed by a current MAC sub-PDU.

14. The method of claim 13 wherein an E field occupying 1bit in each MAC subheader is used to indicate whether a current MAC subPDU is followed by padding.

15. The method of claim 14, wherein constructing the mac rar PDU carrying the padding indication information comprises:

16. The method of claim 12, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information for indicating whether a current MAC sub-PDU is padding.

17. The method of claim 16 wherein an E field occupying 1bit in each MAC subheader is used to indicate whether a current MAC subPDU is padding.

18. The method of claim 17, wherein constructing the mac rar PDU carrying the padding indication information comprises:

19. The method of claim 16, wherein the condition that each MAC subheader carries a random access preamble sequence RAPID is utilized to indicate whether a current MAC sub-pdu is padding.

20. The method of claim 19, wherein constructing the mac rar PDU carrying the padding indication information comprises:

21. The method of claim 16 wherein the T field occupying 1bit and the T1 field occupying 1bit in each MAC subheader are used to indicate whether the current MAC sub-pdu is padding.

22. The method of claim 21, wherein constructing the mac rar PDU carrying the padding indication information comprises:

23. A user device, comprising:

a receiving module, configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

24. The UE of claim 23, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU contains a MAC subheader, and each MAC subheader carries padding indication information indicating whether padding is followed by a current MAC sub-PDU.

25. The UE of claim 23, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information indicating whether a current MAC sub-PDU is padding.

26. A base station, comprising:

and the sending module is used for sending the MAC RAR PDU to user equipment.

27. The base station of claim 26, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information indicating whether padding is followed by the current MAC sub-PDU.

28. The base station of claim 26, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information for indicating whether a current MAC sub-PDU is padding.

29. A user equipment, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor,

the transceiver is configured to receive a media access control random access response protocol data unit MAC RAR PDU sent by a base station, where the MAC RAR PDU carries padding indication information;

or,

30. The UE of claim 29, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU contains a MAC subheader, and each MAC subheader carries padding indication information indicating whether padding is followed by a current MAC sub-PDU.

31. The UE of claim 30, wherein an E field occupying 1bit in each MAC subheader is used to indicate whether a current MAC subpPDU is followed by padding.

32. The UE of claim 31, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

analyzing an E domain in an MAC subheader of each MAC subPDU;

33. The UE of claim 29, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU comprises a MAC subheader, and each MAC subheader carries padding indication information indicating whether a current MAC sub-PDU is padding.

34. The UE of claim 33, wherein an E field occupying 1bit in each MAC subheader is utilized to indicate whether a current MAC subpDU is padding.

35. The UE of claim 34, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

analyzing an E domain in an MAC subheader of each MAC subPDU;

36. The UE of claim 33, wherein the indication of whether the current MAC sub-PDU is padding is performed by using a random access preamble sequence RAPID carried in each MAC subheader.

37. The UE of claim 36, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

38. The UE of claim 33, wherein a T field occupying 1bit and a T1 field occupying 1bit in each MAC subheader are utilized to indicate whether a current MAC subpDU is padding.

39. The UE of claim 38, wherein the determining padding in the MAC RAR PDU according to the padding indication information in the MAC RAR PDU comprises:

40. A base station, comprising: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor,

and the transceiver is used for sending the MAC RAR PDU to user equipment.

41. The base station of claim 40, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, and wherein the MAC sub-PDUs comprise at least non-padding MAC sub-PDUs, each non-padding MAC sub-PDU contains a MAC subheader, and each MAC subheader carries padding indication information indicating whether padding is followed by a current MAC sub-PDU.

42. The base station of claim 41, wherein an E field occupying 1bit in each MAC subheader is utilized to indicate whether a current MAC subpPDU is followed by padding.

43. The base station of claim 42, wherein the constructing of the MACRAR PDU carrying padding indication information comprises:

44. The base station of claim 40, wherein the MAC RAR PDU comprises one or more MAC sub-PDUs, each MAC sub-PDU contains a MAC subheader, and each MAC subheader carries padding indication information for indicating whether a current MAC sub-PDU is padding.

45. The base station of claim 44, wherein an E field occupying 1bit in each MAC subheader is utilized to indicate whether a current MAC subpPDU is padding.

46. The base station of claim 45, wherein the constructing of the MACRAR PDU carrying padding indication information comprises:

47. The base station of claim 44, wherein the condition that each MAC subheader carries a random access preamble sequence RAPID is utilized to indicate whether the current MAC subpPDU is padding.

48. The base station of claim 47, wherein the constructing of the MACRAR PDU carrying padding indication information comprises:

49. The base station of claim 44, wherein the T field occupying 1bit and the T1 field occupying 1bit in each MAC subheader are utilized to indicate whether the current MAC subpPDU is padding.

50. The base station of claim 49, wherein the constructing of the MACRAR PDU carrying padding indication information comprises:

51. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps in the information indicating method according to any one of claims 1 to 11; alternatively, the program realizes the steps in the information indication method according to any one of claims 12 to 22 when executed by a processor.