CN107360594B

CN107360594B - Information processing method and device

Info

Publication number: CN107360594B
Application number: CN201610302659.1A
Authority: CN
Inventors: 王莹莹; 孙军帅; 陈锋; 黄学艳; 陈卓; 易芝玲
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Communications Ltd Research Institute
Priority date: 2016-05-09
Filing date: 2016-05-09
Publication date: 2020-07-07
Anticipated expiration: 2036-05-09
Also published as: CN107360594A

Abstract

The invention discloses an information processing method and device, wherein the method comprises the following steps: adding a super sequence number and an ending identification bit in a frame structure of a data protocol unit (PDU) of a radio link sublayer RLC unacknowledged mode UM; wherein, the super sequence number is used for indicating the identification information of the PDU group where the PDU is located; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group; and sending the PDU of the RLC UM added with the super sequence number and the ending identification bit to a receiving end.

Description

Information processing method and device

Technical Field

The present invention relates to transmission management technologies in the field of communications, and in particular, to an information processing method and apparatus.

Background

In the prior art, the PDCP/RLC is divided and reconstructed, the reordering function of the PDCP PDU is added in the PDCP protocol function, and the RLC function is kept unchanged. However, this solution has the following problems: 1. the method needs to add a sorting function to the data packet in the PDCP protocol, which confuses the functional division of RLC and PDCP and destroys the principle that only RLC is responsible for sorting the data packet; 2. a complete set of complete in-sequence sending and receiving reordering mechanism needs to be added in the PDCP protocol, and the PDCP protocol stack is greatly changed; 3. at present, the PDCP does not need to process the data in the Transparent Mode (TM), and if the PDCP supports the packet ordering function, the TM mode needs to be processed for completeness of the protocol function. 4. When the PDCP is sequenced through SN numbers of PDCP PDUs, the PDCP PDUs transmitted by a plurality of RLC can be sequenced, which causes great complexity and prolongs the sequencing time; 5. when the receiving end re-establishes (reestablishment), a new time delay is added in the re-establishment process because the time for data and control information between the RLC and the PDCP to undergo non-ideal transmission is too long.

Disclosure of Invention

In view of the above, the present invention provides an information processing method and apparatus, which can solve at least the above problems in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the embodiment of the invention provides an information processing method, which comprises the following steps:

adding a super sequence number and an end identification bit in a frame structure of a data protocol unit (PDU) of a radio link sub-layer (RLC) Unacknowledged Mode (UM); wherein, the super sequence number is used for indicating the identification information of the PDU group where the PDU is located; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group;

and sending the PDU of the RLC UM added with the super sequence number and the ending identification bit to a receiving end.

An embodiment of the present invention provides an information processing apparatus, including:

the information processing unit is used for adding a super sequence number and an ending identification bit in a frame structure of the PDU of the RLC UM; wherein, the super sequence number is used for indicating the identification information of the PDU group where the PDU is located; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group;

and the communication unit is used for sending the PDU of the RLC UM added with the super sequence number and the ending identification bit to a receiving end.

The embodiment of the invention provides an information processing method and a device, wherein a super sequence number and an end identification bit are set in a PDU (protocol data Unit) of an RLC UM (radio link control UM), and identification information of a group in which the PDU is located and whether the PDU is the last PDU of the group in which the PDU is located are respectively indicated through the super sequence number and the end identification bit; therefore, the data sorting problem under the scene of simplifying and segmenting the PLC can be set by indicating the group in which the PDU is positioned and whether the PDU is the last PDU in the group, and the method is more suitable for a networking mode of 5G remote non-ideal forward transmission; in addition, compared with the scheme of putting the sorting into the PDCP for realization, the waiting time for sorting by using SN is reduced and the processing efficiency is improved because a plurality of PDUs have the same HSN by introducing the HSN; in the switching process, through the arrangement of the HSN number, the problem of overlarge transmission data volume caused by forwarding a large number of data packets is avoided, and only the data packets corresponding to the group where the data packets with errors are located can be forwarded, so that the data forwarding is reduced; the compatibility is better because the method can be realized only by inserting the newly added information into the PDU frame structure of the RLC UMD.

Drawings

FIG. 1 is a flow chart of an information processing method according to an embodiment of the present invention;

FIG. 2a is a diagram of a frame structure (5bitSN number) of a conventional RLC UMD PDU;

fig. 2b is a schematic structural diagram after adding HSN and EM fields on the basis of the frame structure of fig. 2a according to an embodiment of the present invention;

FIGS. 3 a/3 b-7 a/7 b are diagrams of several frame structures of RLC UMD PDU and the frame structure after HSN and EM fields are added on the basis of these frame structures in the prior art;

FIG. 8 is a schematic diagram of an apparatus according to an embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The first embodiment,

An embodiment of the present invention provides an information processing method, as shown in fig. 1, including:

step 101: adding a super sequence number and an ending identification bit in a frame structure of a data protocol unit (PDU) of a radio link sublayer RLC unacknowledged mode UM; wherein, the super sequence number is used for indicating the identification information of the PDU group where the PDU is located; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group;

step 102: and sending the PDU of the RLC UM added with the super sequence number and the ending identification bit to a receiving end.

The scheme provided by this embodiment redesigns the frame structure of the conventional RLC UMD PDU to obtain a new RLC UMD PDU frame structure, so that the redesigned RLC UMD PDU is suitable for the requirement of simplifying RLC packet sequencing in a 5G remote network, and meanwhile, unbevable challenges are not brought to the implementation of a receiving end.

First, a super sequence number, i.e., identification information for indicating a PDU group in which each PDU is located, is added to each PDU in a PDU group.

The length of the super sequence number may be set to an integer multiple of eight minus a length of one bit. The super Sequence Number may be a super Sequence Number (HSN) field in the PDU.

And the HSN domain is used for ensuring the whole byte alignment of the data packet of the RLC and defining the length of the HSN as 8 x N-1 bit. The HSN is used to mark the PDU group (cluster) corresponding to the RLC PDU. The HSN is the same for each RLC UMD PDU belonging to the same PDU cluster.

Wherein the PDU group specifically is: a group of PDUs connected by Packet Data Convergence Protocol (PDCP) Sequence Numbers (SNs).

Secondly, an end flag may also be set in each PDU, and the end flag is added to a second location, specifically:

before the sending the PDU of the RLC UM added with the super sequence number to the receiving end, the method further includes: and generating an end identification bit, wherein the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group.

Correspondingly, in the PDU frame structure of the RLC UM, determining a second position; adding the end marker bit to the second location.

The end flag bit may be used as an end flag (EM, Endmaker) field, and the Endmaker length is set to be one bit (1bit) length.

Specifically, in the ending flag, 0 may be used to indicate that the UMD PDU corresponding to the RLC UMD PDU is not the end of the PDU cluster in which the RLC UMD PDU is located, and 1 may be used to indicate that the RLC UMD PDU is the last PDU of the PDU cluster in which the RLC UMD PDU is located.

Again, the first location may be disposed adjacent to the second location; in particular, the second position may be disposed before and adjacent to the first position.

By adopting the scheme, the super sequence number and the ending identification bit are set in the PDU of the RLC UM, and the identification information of the group in which the PDU is located and whether the PDU is the last PDU of the group in which the PDU is located are respectively indicated through the super sequence number and the ending identification bit; therefore, the data sorting problem under the scene of simplifying and segmenting the PLC can be set by indicating the group in which the PDU is positioned and whether the PDU is the last PDU in the group, and the method is more suitable for a networking mode of 5G remote non-ideal forward transmission; in addition, compared with the scheme of putting the sorting into the PDCP for realization, the waiting time for sorting by using SN is reduced and the processing efficiency is improved because a plurality of PDUs have the same HSN by introducing the HSN; in the switching process, through the arrangement of the HSN number, the problem of overlarge transmission data volume caused by forwarding a large number of data packets is avoided, and only the data packets corresponding to the group where the data packets with errors are located can be forwarded, so that the data forwarding is reduced; the compatibility is better because the realization can be realized only by inserting the new information into the PDU frame structure of the RLCUMD.

Example II,

In combination with the technical solution provided by the first embodiment, a plurality of examples are provided in this embodiment to explain a processing manner in an actual frame structure:

referring to fig. 2a and fig. 2b, a frame structure of a conventional RLC UMD PDU and a frame structure adopting the scheme provided in this embodiment are respectively described, and on the basis that the conventional RLC UMD PDU structure (5bitSN) provided in fig. 2a has no LI, RLC UM frame structures (HSN takes a length of 7bir as an example) of an HSN domain and an EM domain are added, so as to obtain the frame structure of fig. 2 b. The embodiment can be applied to a sending end, the centralized control module distributes the PDUs (protocol data units) cluster, and each PDU cluster is processed and mapped into a group of RLC PDUs. And multiple groups of parallel RLC PDUs are transmitted to a receiving end, the receiving end RLC determines the end position of the current PDU cluster according to the EM domain, then sequences all RLC PDUs in the PDU cluster, finally notifies the centralized control unit of the PDU cluster which is internally sequenced and the corresponding HSN, and the centralized control unit completes the sequencing of the PDU clusters. The HSN is used as the unique identification of the PDUcluster and is used for sequencing the PDU cluster received by the receiving end master control unit.

Similar to the above example, referring to fig. 3 a/3 b to fig. 7 a/7 b, the frame structure of conventional a RLC cumd PDU (without LI) and the RLC UM frame structure of HSN domain and EM domain are added, respectively, and it is understood that the specific locations of Endmaker and SFN in this embodiment are not too much constrained.

Example III,

An embodiment of the present invention provides an information processing apparatus, as shown in fig. 8, the apparatus including:

an information processing unit 81, configured to add a super sequence number and an end flag in a frame structure of a protocol data unit PDU of an RLC unacknowledged mode UM; wherein, the super sequence number is used for indicating the identification information of the PDU group where the PDU is located; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group;

a communication unit 82, configured to send the PDU of the RLC UM to which the super sequence number and the end flag are added to a receiving end.

The information processing unit is used for determining a first position and a second position in a frame structure of a Protocol Data Unit (PDU) of a Radio Link Control (RLC) Unacknowledged Mode (UM).

and generating an end identification bit, wherein the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group.

The integrated module according to the embodiment of the present invention may also be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product stored in a storage medium, and including several instructions for enabling a computer device (which may be a personal computer, a network device, or a network device) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. An information processing method, characterized in that the method comprises:

adding a super sequence number and an ending identification bit in a frame structure of a data protocol unit (PDU) of a radio link sublayer RLC unacknowledged mode UM; the super sequence number is used for indicating the identification information of the PDU group where the PDU is located, and the super sequence numbers of the PDUs of each RLC UM in the same PDU group are the same; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group; the PDU group is a group of PDUs connected with a packet data convergence protocol PDCP serial number SN;

2. The method of claim 1, further comprising:

in a frame structure of a data protocol unit, PDU, of a radio link sublayer, RLC unacknowledged mode, UM, a first position and a second position are determined.

3. The method of claim 2, further comprising:

setting the super sequence number at the first location and the end marker bit at the second location.

4. The method of claim 2, further comprising:

setting the length of the super sequence number to be an integer of eight times the length of one bit;

and setting the length of the end identification bit as the length of one bit.

5. The method of claim 2, further comprising:

the first position is disposed adjacent to the second position.

6. An information processing apparatus characterized in that the apparatus comprises:

the information processing unit is used for adding a super sequence number and an ending identification bit in a frame structure of a data protocol unit (PDU) of a radio link sub-layer RLC unacknowledged mode UM; the super sequence number is used for indicating the identification information of the PDU group where the PDU is located, and the super sequence numbers of the PDUs of each RLC UM in the same PDU group are the same; the end identification bit is used for indicating whether the PDU is the last PDU in the PDU group; the PDU group is a group of PDUs connected with a packet data convergence protocol PDCP serial number SN;

7. The apparatus according to claim 6, wherein the information processing unit is configured to determine the first location and the second location in a frame structure of a data protocol unit, PDU, of a radio link sublayer, RLC, unacknowledged mode, UM.

8. The apparatus of claim 7,

the information processing unit is configured to set the super sequence number at the first position, and set the end flag at the second position.

9. The apparatus of claim 7,

the information processing unit is used for setting the length of the super sequence number to be an integer of eight times the length of one bit; and setting the length of the end identification bit as the length of one bit.

10. The apparatus according to claim 7, wherein said information processing unit is configured to set said first position adjacent to said second position.

11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.