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Data processing method and apparatus thereof

A data processing and data packet technology, applied in transmission systems, electrical components, wireless communications, etc., can solve problems such as packet loss, unrecognizable data packets, and lack of PDCP SDU aggregation function

Active Publication Date: 2013-09-25
常熟市知识产权运营中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the process of implementing the present invention, the inventor found that the prior art has at least the following problems: when the source base station is a base station of the LTE-A system and the target base station is a base station of the LTE system, since the target base station can only support a 12-bit PDCP sequence number, And the target base station does not have the PDCP SDU aggregation function. Therefore, during the handover process of the user equipment (User Equipment, UE) from the source base station to the target base station, the target base station cannot recognize the data packets with the lengthened sequence number forwarded by the source base station or the aggregated packets. packets of
The configuration mismatch between the source base station and the target base station will cause packet loss during the handover process

Method used

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Embodiment Construction

[0022] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0023] figure 1 It is a schematic flow diagram of the method of the first embodiment of the present invention, including:

[0024] Step 11: When it is necessary to switch to a target system with a different numbering method of the PDCP sequence number, the base station or the terminal determines the PDCP data packet to be renumbered.

[0025] When the source system adopts the PDCP sequence number extension mode, the PDCP packets to be renumbered can be PDCP SDU or PDCP Protocol Data Unit (Protocol Data Unit, PDU); when the source system adopts the PDCP SDU aggregation mode, the PDCP packets to be renumbered The data packet is an aggregated PDCP data packet that aggregates more than two PDCP SDUs.

[0026] Step 12: The base station or the terminal renumbers the PDCP packets to be renumbered, so that the renumbered PDC...

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Abstract

A data processing method and apparatus is disclosed by the embodiments of the present invention. The method includes the following steps: on demand of handing over to a target system with different numbering ways of PDCP sequence numbers, determining the PDCP data packets waiting for being re-numbered; then re-numbering the PDCP data packets waiting for being re-numbered, and enabling the re-numbered PDCP sequence numbers to be in the support range of the target system. The embodiments of the present invention enable UE to implement lossless handover when handing over among the different systems with different numbering ways of PDCP sequence numbers.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a data processing method and device. Background technique [0002] The uplink and downlink peak rates of the Long Term Evolution Advanced (LTE-A) system are 500 Mbps and 1 Gbps respectively, and the uplink and downlink peak rates of the Long Term Evolution (LTE) system are 50 Mbps and 100 Mbps respectively. Due to the increase of the data transmission rate, a larger number of Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) service data units (Service Data Unit, SDU) needs to be generated in a very short time. In the current LTE system, the length of the PDCP sequence number is 12 bits, that is, the range of the sequence number is 0-4095. In the LTE-A system, in order to support a larger number of PDCP SDUs, the following two methods can be adopted: one is to use the method of extending the PDCP sequence number, that is, to extend the length o...

Claims

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Application Information

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IPC IPC(8): H04W40/26H04W80/04H04L29/06
CPCH04W36/02H04W80/02
Inventor 常俊仁李亚娟
Owner 常熟市知识产权运营中心有限公司
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