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Method and device for sending and receiving data

A technology of sending equipment and receiving equipment, applied in the direction of network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as unfavorable overall network efficiency, affecting real-time operation and transmission efficiency, etc., to improve overall network efficiency and reduce Effects of Packet Complexity and Header Overhead

Active Publication Date: 2018-01-30
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method and device for sending and receiving data transmission, which is used to solve the problem existing in the prior art that if the current layer 2 design is adopted in a high-speed scenario, it will seriously affect the real-time performance and transmission efficiency of the operation, which is not conducive to the network The question of overall efficiency

Method used

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  • Method and device for sending and receiving data
  • Method and device for sending and receiving data
  • Method and device for sending and receiving data

Examples

Experimental program
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Embodiment 1

[0153] Embodiment 1. A scheme for multiplexing data of different logical channels.

[0154] In the implementation, the data block needs to be sent to the physical layer and sent out by the physical layer, and all data can be transmitted on the physical layer resource at the same time. In order to improve transmission efficiency, the embodiment of the present invention multiplexes data of different types and from different logical channels for simultaneous transmission.

[0155] In order to improve the efficiency of data multiplexing, reduce header overhead as much as possible and maintain flexibility, multiplexing of different logical channels in the embodiment of the present invention can adopt some or all of the following methods:

[0156] 1. The sending device puts data from different logical channels into PDUs, and distinguishes them by logical channel identifiers (such as logical channel numbers). After the data packets of one logical channel are placed, the data of the n...

Embodiment 2

[0182] Embodiment 2, the first scheme for transmitting internal data packets of a logical channel.

[0183] Inside a logical channel, there may be control information, initial transmission data, and retransmission data at the logical channel level. The control information at the logical channel level here is different from the control information in Embodiment 1 above. The control information in Embodiment 1 is UE-level control information, while the control information referred to in Embodiment 2 is control information at the logical channel level. , such as some status report feedback in AM mode, header compression control information, etc.

[0184] When the sending device organizes the data blocks in a logical channel, the control information generally has the highest priority, the retransmission data takes the second place, and the initial transmission data has the lowest priority. First, then the retransmission data, and finally the initial transmission data.

[0185] A...

Embodiment 3

[0199] Embodiment 3, the second scheme for transmitting internal data packets of a logical channel.

[0200] Similar to Embodiment 2, Embodiment 3 also provides an organization method of data packets within a logical channel. Regarding control information, retransmission data, priority of initial transmission data, and order of placement, they are consistent with Embodiment 2.

[0201] In Embodiment 3, the sending device concentrates the headers in the sub-headers, followed by real control information and data payloads.

[0202] A possible PDU structure is listed below, such as Figure 5 shown. It should be noted, Figure 5 The shown structure is only a possible implementation manner, as long as the PDU structure capable of multiplexing is applicable to the embodiment of the present invention.

[0203] Figure 5 In , the meanings and values ​​of each field are consistent with those in Embodiment 2 and Embodiment 1. The difference is that the header indication information...

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Abstract

The embodiment of the invention relates to the wireless communication technology field, especially to a method and device for sending and receiving data. The objective of the invention is to solve theproblem that if a current layer two design is adopted in a high-rate scene, timeliness and transmission efficiency of operation can be seriously influenced so as to go against a whole network efficiency in the prior art. In this embodiment of the present invention, an SN (Sequence Number) is allocated to each layer two data packet, and each layer two data packet is sent according to the allocatedSN to obtain a data block, and a PDU (Protocol Data Unit) is generated according to the SN and the data block. Because only one SN is needed to be allocated for each layer two data packet, the grouppacket complexity and first cost of data are effectively reduced, an influence on timeliness and transmission efficiency of the operation is also effectively reduced, the overall network efficiency isimproved, and the method and device for sending and receiving data can be better applied to high-rate scenes.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method and device for sending and receiving data. Background technique [0002] Data transmission between UE (terminal) and eNB (evolved base station) usually goes through PDCP (Packet Data Convergence Protocol, packet data aggregation protocol) layer, RLC (Radio Link Control, radio link control) layer, MAC (Medium Access Control, Media access control) layer and PHY (physical) layer transmission, each layer completes different data processing. The PDCP layer mainly performs security operations and header compression and decompression processing, such as encryption and integrity protection, ROHC (Robust Header Compression, robust header compression;) compression and decompression, etc.; the RLC layer mainly completes the segmented concatenation and sequence of data Submission and ARQ (Automatic Repeat reQuest; automatic repeat request) data transmission guarantee...

Claims

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Application Information

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IPC IPC(8): H04W28/06
Inventor 刘佳敏皮埃尔
Owner DATANG MOBILE COMM EQUIP CO LTD
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