Method, device and communication system for triggering buffer state report

Abstract

The embodiment of the invention discloses a method for triggering a buffer state report (BSR), comprising the following steps: suspending RB after receiving a wireless resource control connection reconfiguration message from a base station; responding to the base station to finish reconstruction message; recovering the RB after receiving the wireless resource control connection reconfiguration message from the base station; and transmitting BSR to the base station. The embodiment of the invention also provides a device and a communication system for triggering the BSR, which relate to the field of mobile communication. The invention is provided to solve the problem of data loss resulting from failing to obtain the uplink resource in time after the RB is recovered from the suspension statusin the prior art. The invention can be applied to transmit the BSR by a triggering terminal in the mobile communication system.

Description

technical field [0001] The invention relates to the field of digital mobile communication, in particular to a method and a device for triggering a buffer state report in a third-generation mobile communication long-term evolution system. Background technique [0002] The 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as "3GPP"), as an important organization in the field of mobile communications, promotes the standardization work of 3G technology. The Long Term Evolution ("LTE") project was approved at the 26th meeting of the 3GPP wireless access network, and the project was launched from the second half of 2004. The goal of LTE is to develop a framework of radio access technologies characterized by high data rates, low response times, and optimal packet access. [0003] In the long-term evolution system, different terminals send uplink scheduling information reports to the base station when triggered by timers or events. The uplink sche...

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Problems solved by technology

[0004] In the process of realizing the above-mentioned BSR uplink transmission, the inventors found at least the following problems in the prior art: during the radio resource control connection re-establishment process, the system will suspend the signaling radio bearer 1 when the terminal does not receive the connection reconfiguration message. (Signaling Radio Bearer 1, SRB1) other than RB, the data of the RB will be cached in the bearer layer

After the system restores RB, the terminal does not meet the four trigger conditions proposed in the protocol 36.321, and cannot immediately send a BSR request to the base station to allocate channel resources, so that the data buffered in the bearer layer cannot be sent in time, which will cause data overflow in the buffer area of ​​the bearer layer or timing out The server will discard the cached data when the time comes, causing the cached data to be lost

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