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Method and apparatus for improved data communication for cellular access system

An access system and cellular technology, applied in transmission systems, digital transmission systems, using return channels for error prevention/detection, etc., can solve problems such as RLC transmission window stalls, system performance and throughput degradation, etc.

Inactive Publication Date: 2012-05-30
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the current ACK / NACK reporting protocol is that a full control block is required every time an ACK / NACK message is sent
For acknowledged mode services, there is a potential risk of stalling the RLC transmission window, which can degrade system performance and throughput

Method used

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  • Method and apparatus for improved data communication for cellular access system
  • Method and apparatus for improved data communication for cellular access system
  • Method and apparatus for improved data communication for cellular access system

Examples

Experimental program
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Embodiment Construction

[0030] In the following the invention will be further described using examples of preferred embodiments and with reference to the accompanying drawings. Reference will sometimes be made to nomenclature and specific standards from known systems, such as the EDGE standard or the GSM system. Such references are made merely to provide clear specific examples and should not be viewed as limiting. Those skilled in the art will appreciate that the present invention can be applied equally well to a wide range of cellular access systems using functions similar to those shown in the following embodiments, although in other systems different terms of.

[0031] For example, a node in a cellular access system will be shown below and referred to as a radio base station RBS. In some systems, essentially the same function as the RBS is performed by a node known as a Node B or sometimes an "eNodeB", likewise a node known in these examples as a UE (User Equipment) Sometimes referred to as MS...

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PUM

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Abstract

The invention claims a method (200) for a cellular system (100), with an RBS (120) which controls a cell (110) with User Equipments UE (130, 140). The RBS and the UEs exchange data which may comprise sequence numbers, and exchange reports on whether or not data has been received successfully, so that both the UE and the RBS can be the reporting party and the report receiving party. The reporting party sends a report (210) to the report receiving party on whether or not data has been received successfully, together with data to the report receiving party or to another party in the cell. The reporting party decides (220) the contents of the report using one of the following priority rules: data with lower delay tolerance is given priority, data detected as received in error is given priority, data is given priority according to block sequence numbers.

Description

technical field [0001] The invention discloses a method for use in a cellular access system in which there is at least one radio base station RBS for controlling traffic to and from a cell in the system , a user with a user equipment UE can exist in the cell. With the present invention, an improved performance of so-called ACK / NACK reporting can be obtained. Background technique [0002] The current EDGE standard allows for two different radio link control RLC modes of operation: acknowledged and un-acknowledged (un-acknowledged) modes. In unacknowledged mode, data delay is kept to a minimum because there is no retransmission delay, but bandwidth is wasted because excessive channel coding must be used to guarantee an acceptable frame error rate (FER). [0003] In acknowledged mode, on the other hand, data blocks are retransmitted until they are correctly received, regardless of delay requirements. Since the number of retransmissions is unlimited, it is not possible to gua...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04L29/06H04L1/1809
CPCH04L1/0073H04L1/0061H04L1/1809H04L1/1635H04L1/08H04L1/1614H04L1/1664
Inventor Y·廷纳M·宋德伯格H·珀森A·伯格斯特伦
Owner TELEFON AB LM ERICSSON (PUBL)