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State report generation method and system as well as state report receiving method

A technology for status reporting and reporting, applied in the field of communications, can solve the problem of large space occupied by status reports, and achieve the effect of reducing the space occupied by transmission

Inactive Publication Date: 2018-02-23
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a status report generation and system, and a status report receiving method, to at least solve the problem in the related art that the status report sent by the receiving end device occupies a large space when there is a transmission error in the data

Method used

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  • State report generation method and system as well as state report receiving method
  • State report generation method and system as well as state report receiving method
  • State report generation method and system as well as state report receiving method

Examples

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Embodiment 1

[0072] The embodiments described in this application document can run in a 5G system. The receiving end device can be a terminal or a network side device, and the corresponding sending end device can be a network side device or a terminal device. After sending the data packet, the status report described in this application document can be generated, or the network side device can also generate a status report after receiving the data packet uploaded by the terminal. The embodiments described in this application document have the above two scenarios.

[0073] figure 1 is a flowchart of a method for generating a status report according to an embodiment of the present invention, such as figure 1 As shown, the process includes the following steps:

[0074] S102. The receiving end device generates a status report, where the status report carries indication information for indicating one or more lost data packets;

[0075] S104, the receiving end device sends the status report t...

specific Embodiment 1

[0108] The specific embodiment 1 corresponds to the mode 1 in the above-mentioned preferred embodiment.

[0109] Figure 4 It is a schematic diagram of the PDCP (sequence number 15 bits) status report format based on the segmented bitmap according to the specific embodiment 1. in, Figure 4 The discussion is based on the assumption that the length of the PDCP sequence number is 15. Therefore, the maximum PDCP sequence number Maximum_PDCP_SN is 32767, that is, the range of the sequence number SN is 0 to 32767, and the length of the reordering window is 15 bits of the length of the PDCP sequence number. half of , which is 16384. When the received data packet is the data packet delivered out of order by RLC during PDCP reconstruction, and the out-of-order does not meet the conditions for submission to the upper layer, the data packet is stored in the cache and not submitted to the upper layer temporarily. This incorrectly received data packet The generation of the status repor...

specific Embodiment 2

[0117] The specific embodiment 2 corresponds to the mode 2 in the above-mentioned preferred embodiment.

[0118] Figure 5 It is a schematic diagram of the PDCP (sequence number 15 bits) status report format without bitmap according to the specific embodiment 2. When the SN numbers of data packets that need to be retransmitted by the opposite end span a large range, and the data packets that need to be retransmitted are sparsely distributed, in order to reduce the bit overhead, it is necessary to enhance the PDCP status report format in the prior art, that is, no bitmap is required Carrying out-of-sequence data packets, only use the NMS to indicate the sequence number SN of a single data packet. For example, if data packets with SN=100, 300, 500, and 1000 are lost, the span between each lost data packet is very large, and the distribution is very sparse, so it is not suitable to use segmented bitmaps to generate status reports . For this scenario, directly use the sequence ...

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Abstract

The invention provides a state report generation method and system as well as a state report receiving method. The state report generation method comprises the following steps that: receiving-end equipment generates a state report, wherein the state report carries indication information for indicating one or more missing data packets; and the receiving-end equipment transmits the state report to transmitting-end equipment. Through adoption of the technical scheme, the problem of occupation of a large space by the state report transmitted by the receiving-end equipment in the case of data transmission error in the prior art is solved, and the transmission occupied space of the state report is reduced greatly.

Description

technical field [0001] The invention relates to the communication field, in particular to a status report generation and system, and a status report receiving method. Background technique [0002] In related technologies, the user plane status reporting mechanism is applied to certain wireless bearers that require receiving confirmation by the receiving end. The receiving end feeds back the receiving status of the data, and notifies the relevant entity of the user plane at the sending end through the feedback from the receiving end. The data packet information received by the receiving end when the reconstruction is completed, so as to reduce unnecessary repeated data packet transmission after the reconstruction of the relevant entity of the user plane of the transmitting end is completed. [0003] In the 4G communication network in the related art, the feedback status report of the user plane entity such as the Packet Data Convergence Protocol (PDCP for short) adopts the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W28/02H04W28/14
CPCH04W28/0278H04W28/14H04L1/18
Inventor 何青春黄河李楠
Owner ZTE CORP
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