Cache reporting method and device for radio bearer

A technology of wireless bearer and buffer status report, applied in the field of communication, can solve the problem of base station scheduling redundant uplink resources, and achieve the effect of resource optimization and resource saving

Active Publication Date: 2020-12-29
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a wireless bearer buffer reporting method and device to solve the problem of redundant uplink resource scheduling by the base station caused by the existing buffer reporting method

Method used

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  • Cache reporting method and device for radio bearer
  • Cache reporting method and device for radio bearer
  • Cache reporting method and device for radio bearer

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0088] Example 1: If image 3 As shown, the RB has activated repeated transmission and corresponds to two RLC entities, wherein the RLC entity corresponding to the second logical channel is the main RLC entity, and always performs data transmission of the RB, so the buffer of the corresponding logical channel group is always calculated when the data arrives Reporting; the RLC entity corresponding to the first logical channel is a secondary RLC entity, and the first logical channel is to be used for repeated transmission. At this time, it is assumed that for the first logical channel corresponding to the PDCP entity of the RB, only the PDCP PDU and PDCP SDU are backed up at the PDCP layer (shown in the dashed box in the figure), and although the RLC entity activates repeated transmission, the image 3 The PDCP PDU1, PDCP PDU2, PDCP SDU1, and PDCP SDU2 backed up by the middle PDCP layer are not retransmitted. At this time, there is no target PDCP PDU in the first logical channel...

example 2

[0090] Example 2: If Figure 4 As shown, the RB has activated repeated transmission and corresponds to two RLC entities, wherein the RLC entity corresponding to the second logical channel is the main RLC entity, and always performs data transmission of the RB, so the buffer of the corresponding logical channel group is always calculated when the data arrives Reporting; the RLC entity corresponding to the first logical channel is a secondary RLC entity, and the first logical channel is to be used for repeated transmission. At this time, it is assumed that the first logical channel corresponding to the PDCP entity of the RB is delivered to the RLC layer after the PDCP layer backs up the PDCP PDU to obtain the RLC PDU. Figure 4 The PDCP PDU1, PDCP PDU2, PDCP SDU1, PDCP SDU2 backed up by the PDCP layer (indicated by the dashed box in the figure) and the RLC PDU (shown by the dashed box in the figure) that have been submitted to the RLC layer are not retransmitted. There is no ta...

example 3

[0092] Example 3: If Figure 5 As shown, the RB has activated repeated transmission and corresponds to two RLC entities, wherein the RLC entity corresponding to the second logical channel is the main RLC entity, and always performs data transmission of the RB, so the buffer of the corresponding logical channel group is always calculated when the data arrives Reporting; the RLC entity corresponding to the first logical channel is a secondary RLC entity, and the first logical channel is to be used for repeated transmission. At this time, it is assumed that for the first logical channel corresponding to the PDCP entity of the RB, after the PDCP layer backs up the PDCP PDU, all the backup PDCP PDUs are repeatedly transmitted, that is, it is determined that all the backup PDCP PDUs are target PDCP PDUs. At this time, the first logical The first buffered data amount corresponding to the channel is the sum of the PDUs inside the dotted ellipse, that is, the PDCP PDU1, PDCP PDU2, PDCP...

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Abstract

The embodiment of the invention provides a cache reporting method and device for a radio bearer. The method comprises the steps of obtaining a PDU (Protocol Data Unit) determined to carry out uplink data transmission for an RB (Radio Bearer) which has been activated for repeated transmission; and reporting a buffer status report (BSR) according to the PDU which is determined to perform uplink datatransmission. The embodiments of the invention realize accurate allocation of uplink transmission resources of a terminal by a base station, save uplink resources, and improve resource transmission efficiency.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for buffering and reporting radio bearers. Background technique [0002] Currently, the 5G NR system mainly supports three types of services, including enhanced MobileBroadband (eMBB), massive Machine Type Communications (mMTC) and Ultra-Reliable and Low Latency Communications (Ultra-Reliable and Low Latency Communications, URLLC). For URLLC, due to its relatively high requirements on delay and reliability, 3GPP has introduced a repeated transmission mechanism, that is, the same packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer protocol data is transmitted through multiple paths. The unit PDU (Protocol Data Unit, PDU) improves transmission reliability and reduces transmission delay through multiple transmission gain. Wherein, the repeated transmission model includes a carrier aggregation (Carrier aggregation, CA) ...

Claims

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Application Information

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IPC IPC(8): H04W28/02H04W72/12
CPCH04W28/0278H04W72/1268H04W72/21
Inventor 谌丽赵亚利
Owner DATANG MOBILE COMM EQUIP CO LTD
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