CN1819566B

CN1819566B - Method and device for improving inspection performance in assigned distributing mode by user

Info

Publication number: CN1819566B
Application number: CN2006100242928A
Authority: CN
Inventors: 李兴伟; 王炳立
Original assignee: SHANGHAI XUANPU INDUSTRIAL Co Ltd
Current assignee: Shanghai Xuanpu Industrial Co., Ltd.
Priority date: 2006-03-02
Filing date: 2006-03-02
Publication date: 2010-11-03
Anticipated expiration: 2026-03-02
Also published as: CN1819566A

Abstract

The method includes: deciding if current CCTrCH of the current target user contains TFCI code word; making detection of enabled code track and shift training sequence for the first radio frame in each transmission time slot; decoding the TFCI code word; calculating the state of current target user in the enabled code track and in the valid shift training sequence; in remaining transmission time slot, setting detecting result of relevant code track and shifting training sequence; outputting message of valid shift training sequence and enabled code of current target user. The invention can avoid data loss in first radio frame, and overcome the falling of system performance caused by detection inaccuracy for shift training sequence and enabled code track.

Description

In assigned distributing mode by user, improve method and the device that detects performance

Technical field

The present invention relates to improve in a kind of TD-SCDMA (TD SDMA) communication system method and the device that detects performance; Specifically, relate in TD-SCDMA system, in assigned distributing mode by user, use the information of transformat combination directive (Transport Format CombinationIndicator is called for short TFCI) to improve method and the device that detects performance.

Background technology

In the receiving system of TD-SCDMA, transformat combination directive TFCI will indicate the information of receiving system physical coded combination transfers information, in case obtain the value of TFCI, just can decode accordingly to transmission channel.TFCI transmits on first radio frames on each Transmission Time Interval minimum code channel of (Transmission Time Interval is called for short TTI), and keeps constant in whole Transmission Time Interval.

System assignment does not always use full for all code channels of targeted customer.System increases power system capacity simultaneously for the interference that reduces between the user, the number of the channel code that system uses will change according to the actual needs of business, therefore need the actual operating position of targeted customer's channel code be detected, the code channel of this actual use is called as activated code channel, and this targeted customer's real data is handled.

For the situation of change of adaptive system business, during the code channel number that uses when system and system assignment inconsistent, need the code channel situation that activate be detected, in order to the activation situation of judgement code channel.Because the gain of the spread spectrum of system is lower, when using conventional algorithm to detect code channel, error rate is higher, therefore be easy to cause the situation of code channel omission and flase drop, especially in the time of the code channel omission, to cause system data to lose and cause the severe exacerbation of demodulation performance, under the kindred circumstances, flase drop also will cause the reduction of systematic function.

When the method for salary distribution of the movement training sequence of system is used assigned distributing mode by user (UESPEFICMODE), owing to exist one to one corresponding relation still less between the training sequence of system and the code channel, when mistake appears detecting in the distribution that movement training sequence occurs, also will cause the detection mistake of code channel to increase, and finally cause the receptivity of system to descend.

Summary of the invention

The object of the present invention is to provide a kind of method and device that detects performance that in assigned distributing mode by user, improve, utilize the TFCI accurately that calculates in first radio frames, determine the method that code channel detects and movement training sequence detects in the residue subframe except that first radio frames; This method can avoid just going out the situation of active valid data in first radio frames, improve the performance of receiving system.

For reaching above-mentioned purpose, the invention provides

A kind of device that detects performance that improves in assigned distributing mode by user comprises: judge whether this targeted customer's current physical coded combination transfers information contains the module of transformat combination directive; To first radio frames in each Transmission Time Interval of this targeted customer, the module of carrying out the detection of activated code channel and movement training sequence; The code word parsing module of transformat combination directive after receiving first radio frames, is decoded to the code word of transformat combination directive, obtains the value of the transmitted codewords in this Transmission Time Interval; Calculate this targeted customer in the activated code channel of this physical coded combination transfers information and the module of the situation of effective movement training sequence; In remaining Transmission Time Interval, the testing result of relevant code track and movement training sequence module is set; This targeted customer's the effective movement training sequence and the message output module of activated code channel.

Method and the device that detects performance that in assigned distributing mode by user, improve provided by the invention, can overcome significantly because the movement training sequence of system and active coding detect the decline of the systematic function that error caused, can reduce simultaneously the operand of the detection algorithm of system, improve the performance of receiving system.

Description of drawings

Fig. 1 improves the flow chart of the method that detects performance under the assigned distributing mode by user of the present invention with the information of TFCI;

Fig. 2 for the present invention at assigned distributing mode by user, improve the installation drawing of the method that detects performance with the information of TFCI.

Embodiment

Below by Fig. 1 and Fig. 2, introduce specific embodiments of the invention in detail, so that further understand content of the present invention.

As shown in Figure 1, under assigned distributing mode by user of the present invention, the information of usefulness TFCI improves the flow chart of the method that detects performance, and it comprises following steps:

Step 1, judge whether this targeted customer's current C CTrCH contains the TFCI code word:

If contain TFCI code word, execution in step 2;

If do not contain the TFCI code word, then receiving system thinks that all resources that this channel distributed all take fully, does not need its shared activated code channel and effective movement training sequence are detected redirect execution in step 6;

Step 2, to first radio frames in each Transmission Time Interval of this targeted customer, carry out the detection of activated code channel and movement training sequence, be used to measure the effective movement training sequence that this targeted customer and other users may exist and the situation of activated code channel;

At the sign indicating number detection-phase, by a detection threshold is set, the code channel that detects effective movement training sequence and be activated;

The setting principle of described detection threshold is: make as much as possible movement training sequence and code channel determined be effectively to activate; Avoid in first radio frames occurring the situation of losing, thereby avoid the detection of transformat combination directive to make mistakes, further avoid the severe exacerbation of systematic function owing to the effective information that omission causes;

Further, described detection threshold is arranged to: measuring all movement training sequence and code channel all is effectively to activate;

The code word of step 3, TFCI is resolved: after receiving first radio frames, the code word of TFCI is decoded, obtain the value of the transmitted codewords in this Transmission Time Interval;

Step 4, calculate this targeted customer in the activated code channel of this CCTrCH and the effective situation of movement training sequence;

According to the regulation of 3GPP TS 25.222 agreements, calculate the rate information of the business of this targeted customer on this CCTrCH, thereby calculate targeted customer's's this moment the activated code channel and the information of effective movement training sequence;

Step 5, according to the result that step 4 obtains, in remaining Transmission Time Interval, the testing result of relevant code track and movement training sequence is set directly;

Promptly, in remaining Transmission Time Interval, do not carry out the detection of movement training sequence and activated code channel, and according to effective activation situation of movement training sequence in first radio frames in the Transmission Time Interval that calculates in the step 4 and code channel, the result that direct corresponding setting detects, the i.e. activation value of movement training sequence and code channel among the targeted customer;

Step 6, effective movement training sequence of exporting this targeted customer and the information of activated code channel.

Correspondingly, a kind of device that detects performance that improves in assigned distributing mode by user as shown in Figure 2, comprising: judge whether this targeted customer's current physical coded combination transfers information contains the module of transformat combination directive; To first radio frames in each Transmission Time Interval of this targeted customer, the module of carrying out the detection of activated code channel and movement training sequence; The code word parsing module of transformat combination directive after receiving first radio frames, is decoded to the code word of transformat combination directive, obtains the value of the transmitted codewords in this Transmission Time Interval; Calculate this targeted customer in the activated code channel of this physical coded combination transfers information and the module of the situation of effective movement training sequence; In remaining Transmission Time Interval, the testing result of relevant code track and movement training sequence module is set; This targeted customer's the effective movement training sequence and the message output module of activated code channel.

Claims

1. one kind is improved the device that detects performance in assigned distributing mode by user, it is characterized in that this device comprises:

Judge whether this targeted customer's current physical coded combination transfers information contains the module of transformat combination directive;

To first radio frames in each Transmission Time Interval of this targeted customer, the module of carrying out the detection of activated code channel and movement training sequence;

The code word parsing module of transformat combination directive after receiving first radio frames, is decoded to the code word of transformat combination directive, obtains the value of the transmitted codewords in this Transmission Time Interval;

Calculate this targeted customer in the activated code channel of this physical coded combination transfers information and the module of the situation of effective movement training sequence;

In remaining Transmission Time Interval, the testing result of relevant code track and movement training sequence module is set;

This targeted customer's the effective movement training sequence and the message output module of activated code channel.

2. the device that detects performance that improves in assigned distributing mode by user as claimed in claim 1 is characterized in that, at the sign indicating number detection-phase, and by a detection threshold is set, the code channel that detects effective movement training sequence and be activated.

3. the device that in assigned distributing mode by user, improves the detection performance as claimed in claim 2 with the information of transformat combination directive, it is characterized in that the setting principle of described detection threshold is: make as much as possible movement training sequence and code channel determined be effectively to activate.

4. the device that in assigned distributing mode by user, improves the detection performance as claimed in claim 1 with the information of transformat combination directive, it is characterized in that, regulation according to 3GPP TS 25.222 agreements, calculate the rate information of the business of this targeted customer on this physical coded combination transfers information, thereby calculate targeted customer's's this moment the activated code channel and the information of effective movement training sequence.