CN102185667A

CN102185667A - Method and device for processing reverse load busy information

Info

Publication number: CN102185667A
Application number: CN2011101026607A
Authority: CN
Inventors: 刘滔
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-04-22
Filing date: 2011-04-22
Publication date: 2011-09-14
Anticipated expiration: 2031-04-22
Also published as: CN102185667B

Abstract

The invention discloses a method and a device for processing reverse load busy information. The method comprises the following steps that: a base station detects reverse signal strength indication (RSSI); the base station executes access-free detection; and the base station generates reverse activity bit (RAB) by using results of the RSSI and the access-free detection. By the invention, the accuracy of the RAB is enhanced and the performance of service is improved.

Description

Busy information processing method of reverse load and device

Technical field

The present invention relates to the communications field, in particular to the processing method and the device of the busy information (Reverse Activity Bit abbreviates RAB as) of a kind of reverse load.

Background technology

Code division multiple access inserts CDMA20001x data evolution (Evolution Data Only, abbreviating EVDO as) technology is a branch of CDMA2000 standard series, be an important RFDC international standard of third generation 3G family, the EVDO technology is the high speed wireless data business platform that provides support specially.The EVDO network can with the common networking of CDMA20001x network that speech business and low-speed data service are provided, shared band.The EVDO high speed data network is in extensive commercial period with international communication market at present at home, and future prospect is wide.Based on the EVDO network, cellular carrier can be the user web browsing is provided, video request program (Video on Demand, abbreviate VOD as), video telephone (Video Telephone abbreviates VT as), procotol phone (Voice over IP, abbreviate VOIP as), various multimedia services such as video broadcasting.

As everyone knows, CDMA is an a kind of self-interference system, and power system capacity is subject to the interference eliminated ability.Along with the oppositely increase of (up) traffic carrying capacity, the reverse capacity of system can infinitely not increase, the close seemingly a kind of downward parabolical relation between them, and under a certain loading condiction, it is maximum that the system reverse capacity reaches.The reverse load that the some time etching system is accepted impacts available reverse signal strength signal intensity indication (Reverse Signal Strength Indication abbreviates RSSI as) and characterizes, expression be the reverse signal intensity that system measures in the inverse bandwidth scope.To CDMA EVDO system, promptly refer to the reverse signal receiving intensity indication in the 1.2288M frequency band of base station.Whether working properly whether RSSI normally be base station reverse receive path outstanding feature.The concrete computational methods of RSSI can be with reference to other documents, and in general, the RSSI value is less than-110dBm or greater than-95dBm, and it is unusual to be judged as RSSI, and last Lower Threshold can be regulated according to actual conditions.

System carries out rssi measurement in quiet period (certain short time that all reverse traffics stop), and this part RSSI mainly comprises system's thermal noise and background noise, promptly is called the end to make an uproar.If the end made an uproar low, this moment, system may detect less than useful reverse traffic signal, and reverse traffic possibly can't carry out; If the end makes an uproar too high, this moment, useful service signal may be submerged in during the end makes an uproar, and seriously reduced the reverse receiving sensitivity of base station.At the bottom of comprising system, the RSSI that the non-quiet period of system (period when reverse traffic carries out) is measured makes an uproar (RSSI that quiet period is measured) and the increment made an uproar in this part relative end of RSSI of normal reverse traffic generation is commonly referred to as noise incremental quantity (Rise Over Thermal abbreviates ROT as).When reverse traffic carried out, ROT must be controlled near the rational system balancing point (being ROT work thresholding).ROT work thresholding has determined the reverse capacity of system, and ROT work thresholding is too high and cross the low system of being beneficial to that all do not have, too highly can influence the stability of a system, crosses low meeting reduction system reverse capacity.

Define forward direction RAB broadcast channel (based on every contained fan) in the CDMA EVDO system and reflected contained fan reverse traffic busy idle condition when BTS service is carried out.Terminal is with the RAB that the receives important reference as next step backward power and reverse rate control.The information (Reverse Activity Bit abbreviates RAB as) of hurrying of reverse load wherein is called reverse activity bit again.

The inaccurate problem of RAB at the processing method of RAB in the correlation technique generates does not propose effective solution at present as yet.

Summary of the invention

Main purpose of the present invention is to provide processing method and the device of a kind of RAB, the inaccurate problem of RAB that generates with the processing method that solves RAB in the above-mentioned correlation technique at least.

According to an aspect of the present invention, provide the processing method of a kind of RAB, having comprised: reverse signal intensity indication (RSSI) is detected in the base station; The base station does not have the detection of access; The base station is used RSSI and nothing to insert the result who detects and is generated RAB.

Preferably, the result that the base station uses RSSI and nothing to insert detection generates RAB and comprises: the result that the base station uses RSSI and nothing to insert detection determines the generating mode of RAB, and generating mode comprises: noise incremental quantity (ROT) mode and load (Load) mode; The base station uses generating mode to generate RAB.

Preferably, use RSSI in base station determines that with the result who does not have the detection of inserting the generating mode of RAB comprises: RSSI is determined greater than system's predetermined value in the base station, and the result who does not have the access detection truly inserts unusual for not having access normally; The base station determines that the generating mode of RAB is the Load mode.

Preferably, the base station uses generating mode to generate after the RAB, also comprises: RAB indication idle condition is determined in the base station in first scheduled time; The base station switches to the ROT mode with the generating mode of RAB; The base station uses ROT to generate RAB.

Preferably, before the result who uses RSSI and nothing to insert detection in the base station determined the generating mode of RAB, also comprise: the base station determined that RAB indicates busy condition in second scheduled time.

According to a further aspect in the invention, provide the processing unit of a kind of RAB, be applied to the base station, having comprised: detection module is used to detect reverse signal intensity indication RSSI; Processing module is used to not have insert and detects; First generation module, the result who is used to use RSSI and do not have the detection of inserting generates RAB.

Preferably, generation module comprises: first determination module, and the result who is used to use RSSI and do not have the detection of inserting determines the generating mode of RAB, generating mode comprises: noise incremental quantity ROT mode and load Load mode; Second generation module is used to use generating mode to generate RAB.

Preferably, second generation module comprises: second determination module, be used for definite RSSI greater than system's predetermined value, and the result who does not have the access detection inserts truly for not having access normally unusual; The 3rd determination module is used for determining that the generating mode of RAB is the Load mode.

Preferably, device also comprises: the 4th determination module is used for determining RAB indication idle condition in first scheduled time; Handover module is used for the generating mode of RAB is switched to the ROT mode; The 3rd generates module, is used to use the ROT mode to generate RAB.

Preferably, generation module also comprises: the 5th determination module is used for determining that RAB indicates busy condition in second scheduled time.

By the present invention, the employing base station is carried out the detection of RSSI and is not had to insert and detect, and uses testing result to generate RAB then, solved in the correlation technique, owing to adopt single RAB generating mode, the inaccurate problem of RAB value that causes, thus improved the accuracy rate of RAB.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Fig. 1 is the flow chart according to the processing method of the RAB of the embodiment of the invention;

Fig. 2 produces flow chart according to the busy information of the self adaptation reverse load of the embodiment of the invention;

Fig. 3 is the structured flowchart according to the processing unit of the RAB of the embodiment of the invention; And

Fig. 4 is the preferred construction block diagram according to the processing unit of the RAB of the embodiment of the invention.

Embodiment

Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

Present embodiment provides the processing method of a kind of RAB, and Fig. 1 is the flow chart according to the processing method of the RAB of the embodiment of the invention, and as shown in Figure 1, this method comprises that following step S102 is to step S106.

Step S102: reverse signal intensity indication (RSSI) is detected in the base station.

Step S104: the base station does not have the detection of access.

Step S106: the base station is used RSSI and nothing to insert the result who detects and is generated RAB.

By above-mentioned steps, the base station carries out the detection of RSSI and does not have insert detecting, and uses testing result to generate RAB then, overcome in the correlation technique, owing to adopt single RAB generating mode, and the inaccurate problem of RAB value that causes, thus improved the accuracy rate of RAB.

Preferably, the base station uses the result of RSSI and nothing access detection to generate RAB numerous embodiments, just can the technical solution problem as long as use the RSSI result that access detects with nothing to generate RAB.A preferred implementation to step S106 describes below.The base station is used RSSI and is not had and insert the generating mode that the result who detects determines RAB, and generating mode comprises: noise incremental quantity (ROT) mode and load (Load) mode; The base station uses generating mode to generate RAB.By the preferred embodiment, the base station is used RSSI and is not had the testing result of access, has avoided in the process of determining RAB, because the RAB that causes unusually of RSSI generates inaccurate problem, has improved the accuracy rate that RAB generates.

Below the mode of ROT and the mode of Load are described.The principle of ROT mode is that ROT and ROT work thresholding are compared:

If ROT＞=thresholding, it is 1 that RAB is set, and it is busy to characterize reverse traffic;

If ROT＜thresholding, it is 0 that RAB then is set, and characterizes the reverse traffic free time.

The advantage of ROT mode is to measure the reverse traffic busy idle condition of contained fan comparatively real-time and accurately, but the shortcoming of algorithm is to be subject to RSSI, and unusual if RSSI occurs, the mechanism of ROT will lose efficacy.

The principle of Load mode is to estimate the not busy situation of back busy of contained fan by the relative gain value of the relative Reverse Pilot Channel of various backward channels of base band demodulating chip output.The algorithm advantage is can reduce to be subjected to the end influence of RSSI of making an uproar, and can dispose and be implemented in the system that the ROT mode can't realize; Shortcoming is not have the ROT mode accurately with in real time.

Need to prove that traditional RAB producing method can only be selected a kind of in system, can't do adaptively selected according to contained fan load and other abnormal conditions.Present embodiment does not have the access Automatic Measurement Technique by use RSSI abnormality detection technology and EVDO in the EVDO system, realizes that adaptive RAB produces algorithm and selects.The high problem of making an uproar at the bottom of the RSSI that the high problem of making an uproar at the bottom of the RSSI that causes for internal system or external disturbance cause has good interference free performance, has improved the reverse capacity of system.

Preferably, above-mentioned base station use RSSI determines that with the result who does not have the detection of inserting the generating mode of RAB comprises: RSSI is determined greater than system's predetermined value in the base station, and the result who does not have the access detection truly inserts unusual for not having access normally; The base station determines that the generating mode of RAB is the Load mode.Pass through the preferred embodiment, RSSI greater than system's predetermined value and do not have the result that insert to detect for do not have insert normal, when true access is unusual, determine that the RAB generating mode is the Load mode, avoided at RSSI during greater than system's predetermined value, adopt the ROT mode to cause RAB to generate inaccurate problem, improved the accuracy rate of RAB.

Preferably, the base station uses generating mode to generate after the RAB, also comprises: RAB indication idle condition is determined in the base station in first scheduled time; The base station switches to the ROT mode with the generating mode of RAB; The base station uses ROT to generate RAB.By the preferred embodiment, after RAB indication idle condition, the generating mode of RAB is switched to ROT, because the characteristics of ROT mode are the values that generates RAB real-time and accurately, thereby improved real-time and accuracy that RAB generates.

Preferably, before the result who uses RSSI and nothing to insert detection in the base station determined the generating mode of RAB, also comprise: the base station determined that RAB indicates busy condition in second scheduled time.By the preferred embodiment, improved the accuracy that the RAB generating mode is determined.

Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.

Embodiment one

Present embodiment provides the self adaptation production method of a kind of RAB, and present embodiment combines the foregoing description and preferred implementation wherein, and this method comprises:

Step 1: carry out the RSSI abnormality detection.

Preferably, in this step,, do tracking relatively,, judge that then RSSI is unusual high if the RSSI signal that monitoring obtains is higher than alarming threshold with predefined RSSI alarming threshold by the RSSI signal that real-time monitoring is come from radio-frequency devices.

Step 2: do not have to insert and detect.

Preferably, in this step, can use EVDO not have the detection module of access and handle, this module is divided into control logic and inserts two major parts of sample, its function is the access procedure of the true terminal of simulation, and whether the access searcher demodulation function that detects baseband chip is normal.Insert the fpga logic device that sample resides at the base station, comprise general access exploration basic structure, comprise the access duration, access rate, insert sign (UATI), Long Code Mask (LCM), signal to noise ratio (Ecp/Nt), the path delay of time, frequency spectrum frequency displacement, information such as access package data.Control logic is responsible for starting and stopping testing process according to detected parameters (as detecting duration, detecting parameters such as frequency), judges according to the base band demodulating result whether nothing inserts testing process normal, and whether true terminal access procedure is normal.

Step 3: judged result is that RSSI is when high in step 1, if the testing result of RAB busy for a long time (being busy condition) and step 2 as RAB=1 in 24 hours for " do not have insert detect normal; true terminal inserts unusual ", showing makes an uproar at the bottom of the too high RSSI of system begins to influence normal access procedure, making an uproar at the bottom of the too high RSSI may be from internal system, also may be from system's external disturbance.At this moment, if current RAB producing method is the ROT mode, then switch to the Load mode.

Need to prove that making an uproar at the bottom of the RSSI when high, satisfying following condition is that base band demodulating is unusual: do not have and insert that to irritate the bag testing process unusual.This situation may be that hardware failure or bottom baseband chip are unusual, and concrete processing method can adopt the processing mode of prior art, does not repeat them here.

By this preferred embodiment, used RSSI abnormality detection technology and EVDO not to have the access Automatic Measurement Technique.The generating mode of adaptive selection RAB, the problem that the reverse traffic of avoiding causing because the unusual high RAB of causing of equipment RSSI is in busy condition for a long time can't carry out.

Need to prove that present embodiment can be applied in the EVDO system, the flow process of the method that each base station use present embodiment provides is carried out the adaptively selected of RAB generating mode.

Embodiment two

Present embodiment provides a kind of self adaptation oppositely to meet busy information generation method, and Fig. 2 produces flow chart according to the busy information of the self adaptation reverse load of the embodiment of the invention, and as shown in Figure 2, this method comprises following step.

Step S202: system initialization comprises the algorithm parameter configuration in this step.

Step S204: carry out the detection of RSSI.

Step S206: timer TRSSI is set, and regularly whether measure R SSI value is high unusually, if judged result is for being execution in step S208, otherwise execution in step S210.

Step S208: whether monitoring RAB is in busy condition, and the monitoring duration is Trab, if monitoring result is for being in busy condition, execution in step S212, otherwise execution in step S210.

Step S210: flow process finishes.

Step S212: starting does not have the testing process of access, and the monitoring duration is T _NoAcc, do not have and insert the method that detects principle and method employing prior art, do not repeat them here.

Step S214: judge that whether testing result is not have to insert normal (access procedure that the access package sample produces is normal), truly inserts unusual (at T _NoAccDo not receive an access package in the duration), if judged result is for being execution in step S216, otherwise execution in step S218.

Step S216: judge that the current ROT mode that whether adopts generates RAB, if judged result is for being execution in step S222, otherwise execution in step S220.

Step S218: be that hardware or chip are unusual, change other flow processing over to.

Step S220: with current RSSI, information alarm reports such as RAB supply artificial treatment to the backstage.

Step S222: the RAB producing method is switched to the LOAD mode, and start conversion timing device Ttrans.

Step S224: judge whether the RAB state is idle.If judged result is for being execution in step S228, otherwise execution in step S226.

Step S226: start conversion timing device Ttrans.The conversion timing device returns step S224 in the time of overtime.

Step S228: the RAB producing method is switched to the ROT mode again.

Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.

The embodiment of the invention provides the processing unit of a kind of RAB, is applied to the base station, and this device can be used to realize the processing method of above-mentioned RAB.Fig. 3 is the structured flowchart according to the processing unit of the RAB of the embodiment of the invention, and as shown in Figure 3, this device comprises: detection module 32, the processing module 34 and first generation module 36 are elaborated to said structure below.

Detection module 32 is used to detect reverse signal intensity indication RSSI; Processing module 34 is used to not have insert and detects; First generation module 36 is connected to detection module 32 and processing module 34, and RSSI that is used to use detection module 32 to detect to obtain and processing module 34 do not have to insert and detect the result who obtains and generate RAB.

Fig. 4 is the preferred construction block diagram according to the processing unit of the RAB of the embodiment of the invention, and as shown in Figure 4, first generation module 36 comprises: first determination module 362 and second generation module 364; Second generation module 364 comprises: second determination module 3642 and the 3rd determination module 3644; Said apparatus also comprises: the 4th determination module 42, and handover module 44 and the 3rd generates module 46; First generation module 36 also comprises: the 5th determination module 366 is elaborated to said structure below.

Preferably, first generation module 36 comprises: first determination module 362, and the result who is used to use RSSI and do not have the detection of inserting determines the generating mode of RAB, generating mode comprises: noise incremental quantity ROT mode and carrying Load mode; Second generation module 364 is connected to first determination module 362, and the generating mode that is used to use first determination module 362 to determine generates RAB.

Preferably, second generation module 364 comprises: second determination module 3642, be used for definite RSSI greater than system's predetermined value, and the result who does not have the access detection inserts truly for not having access normally unusual; The 3rd determination module 3644, be connected to second determination module 3642, be used for determining RSSI greater than system's predetermined value at second determination module 3642, and do not have insert the result that detects for do not have insert normal, when true access was unusual, the generating mode of determining RAB was the Load mode.

Said apparatus also comprises: the 4th determination module 42, be connected to first generation module 36, and be used for before first generation module 36 generates RAB, in first scheduled time, determining RAB indication idle condition; Handover module 44 is connected to the 4th determination module 42, when being used for the 4th determination module 42 determining RAB indication idle condition in first scheduled time, the generating mode of RAB is switched to the ROT mode; The 3rd generates module 46, is connected to handover module 44, is used to use handover module 44, and the ROT that but changes to generates RAB.

Preferably, first generation module 36 also comprises: the 5th determination module 366, be connected to first determination module 362, be used for first determination module 362 and use the result of RSSI and nothing access detection to determine before the generating mode of RAB, determine that RAB indicates busy condition in second scheduled time.

Need to prove that the processing unit of the RAB that describes among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, do not repeat them here.

Pass through the foregoing description, processing method and the device of a kind of RAB are provided, carry out the detection of RSSI and do not have the detection of access by the base station, use testing result to generate RAB then, overcome in the correlation technique that the busy information of the unusual high reverse load that causes of RSSI produces inaccurate problem in the mobile radio system, thereby improved unusual reverse traffic performance when high for RSSI in the EVDO system.It is main time division way wireless telecommunication system, for example the EVDO system in the CDMA2000 series standard that method provided by the invention can be used for data service.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, carry out by calculation element thereby they can be stored in the storage device, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. the processing method of the busy information RAB of reverse load is characterized in that, comprising:

Reverse signal intensity indication RSSI is detected in the base station;

Described base station does not have the detection of access;

Described base station is used described RSSI and described nothing to insert the result who detects and is generated described RAB.

2. method according to claim 1 is characterized in that, the result that described base station uses described RSSI and described nothing to insert detection generates described RAB and comprises:

Described base station uses described RSSI and described nothing to insert the generating mode that the result who detects determines RAB, and described generating mode comprises: noise incremental quantity ROT mode and load Load mode;

Described base station uses described generating mode to generate described RAB.

3. method according to claim 2 is characterized in that, the result that described base station uses described RSSI and described nothing to insert detection determines that the generating mode of RAB comprises:

Described RSSI is determined greater than system's predetermined value in described base station, and the result that the access of described nothing detects inserts normally true the access unusually for nothing;

Described base station determines that the generating mode of described RAB is described Load mode.

4. method according to claim 3 is characterized in that, described base station uses described generating mode to generate after the described RAB, also comprises:

Described RAB indication idle condition is determined in described base station in first scheduled time;

Described base station switches to described ROT mode with the generating mode of described RAB;

Described base station uses described ROT mode to generate described RAB.

5. method according to claim 2 is characterized in that, the result who uses described RSSI and described nothing to insert detection in described base station also comprises before determining the generating mode of RAB:

Described base station determines that described RAB indicates busy condition in second scheduled time.

6. the processing unit of the busy information RAB of reverse load is applied to the base station, it is characterized in that, comprising:

Detection module is used to detect reverse signal intensity indication RSSI;

Processing module is used to not have insert and detects;

First generation module is used to use described RSSI and described nothing to insert the result who detects and generates described RAB.

7. device according to claim 6 is characterized in that, described first generation module comprises:

First determination module is used to use described RSSI and described nothing to insert the generating mode that the result who detects determines RAB, and described generating mode comprises: noise incremental quantity ROT mode and load Load mode;

Second generation module is used to use described generating mode to generate described RAB.

8. device according to claim 7 is characterized in that, described second generation module comprises:

Second determination module is used for determining described RSSI greater than system's predetermined value, and the result that the access of described nothing detects inserts normally true the access unusually for nothing;

The 3rd determination module is used for determining that the generating mode of described RAB is described Load mode.

9. device according to claim 8 is characterized in that, described device also comprises:

The 4th determination module is used for determining described RAB indication idle condition in first scheduled time;

Handover module is used for the generating mode of described RAB is switched to described ROT mode;

The 3rd generates module, is used to use described ROT mode to generate described RAB.

10. device according to claim 7 is characterized in that, described first generation module also comprises:

The 5th determination module is used for determining that described RAB indicates busy condition in second scheduled time.