CN101330716A - Method for improving capability of wireless communication system - Google Patents
Method for improving capability of wireless communication system Download PDFInfo
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- CN101330716A CN101330716A CNA200710075166XA CN200710075166A CN101330716A CN 101330716 A CN101330716 A CN 101330716A CN A200710075166X A CNA200710075166X A CN A200710075166XA CN 200710075166 A CN200710075166 A CN 200710075166A CN 101330716 A CN101330716 A CN 101330716A
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Abstract
The invention discloses a method for improving the capacity of a wireless communication system, which comprises following steps: (1) determining the block error rate BLER of a dynamic monitor system of a layer 2 at a transmitting terminal; and (2) releasing a radio bearer if the BLER is larger than or equal to a failure block error rate target value, or else keeping the radio bearer. The method can determine the service quality for a subscriber by monitoring the packet loss rate of the layer 2 at the transmission end, thereby reducing the quality report bandwidth of an air interface, processing subscribers with the poor channel quality in time and improving the system capacity.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of method that improves capability of wireless communication system.
Background technology
IMS (IP Multimedia Subsystem, IP Multimedia System) is the subsystem of the support IP multimedia service of 3GPP (third generation partner program is 3G technology standard mechanism) proposition.Its distinguishing feature is to adopt session initiation protocol (Session Initiation Protocol:SIP) system, communication is irrelevant with access way, can possess that multiple media business controlled function is separated with bearing capacity, calling separates with session, application separates with service, business and network detach, and multiple abilities such as mobile network and internet service fusion.IMS has complied with the trend of communication network fusion development, can estimate that in the complete IP network in future, IMS will become the general-purpose platform based on the SIP session, both has been applicable to IP-based multimedia service, also is applicable to traditional voice, data and video traffic.In the hierarchical network architecture of IMS, professional presentation mode has had very big change, separates from network entity, finishes professional generation, business authentication, service operation and service billing etc. by various application servers and certificate server.
Providing the subject matter of real-time multimedia business with packet domain is that network can only provide the service of doing one's best.Also promptly, network does not provide the bandwidth assurance of some and wraps time delay assurance required in the transmission course to certain specific connection of user.IP voice-over (Voice over IP:VoIP) business for example, the quality of user in communication process just may alter a great deal, and allows the people be difficult to accept.The real time multimedia sessions mechanism that the IMS system need provide a kind of QoS of having to guarantee.
Be carried on the IMS for speech, it has adopted RTP (Real-time TransportProtocol:RTP)/RTCP Real-time Transport Control Protocol (Real-time Transport Control Protocol:RTCP)/UDP/IPv6 to come the bearer service data, a complete RTP (RTCP)/the UDP/IPv6 head takies 60 bytes, and AMR coded speech one frame of 12.2K only takies 32 bytes.In IMS speech business process, there is no need every frame and all transmit complete RTP (RTCP)/UDP/IPv6 head, can compress it, and the compression ratio of RTP (RTCP)/UDP/IPv6 head will directly have influence on the service efficiency of radio bearer, and 3GPP has adopted the robust header compressed algorithm ROHC of a kind of high compression ratio, high reliability to come compressed rtp (RTCP)/UDP/IPV6 head.Use the head compression method of ROHC, big appointment reduces 63% of whole Frame length, and this is equivalent to improve to a great extent the capacity of system.
The ROHC compression algorithm is very effective when channel quality is relatively good, but when channel quality is poor, then can not adopt compress mode.If the mode that adopt bandwidth of air-interface to increase this moment, the quality of eating dishes without rice or wine can't be improved, and also may cause quality poorer because of reducing of spreading gain.Reduce BLERtarget (block error probability desired value) if adopt, the method that improves transmitting power then can cause the capacity of system to reduce.Therefore need a kind of processing method that under the situation of bad channel quality, improves power system capacity.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of method that improves capability of wireless communication system, can be fit to the processing of the situation of bad channel quality.
In order to realize above purpose, the present invention has adopted following technical scheme:
A kind of method that improves capability of wireless communication system comprises following treatment step:
1) block error rate BLER of layer 2 dynamic monitoring system of transmitting terminal;
2) if BLER more than or equal to call drop block error probability desired value, then releasing wireless loading; Otherwise maintenance radio bearer.
Block error rate BLER is by formula
Obtain.
Described call drop block error probability desired value is configurable desired value.
The Block Error Rate of dynamic monitoring system is specially in the described step 1): the layer 2 of transmitting terminal adopts sliding window modes, layout during one of every cunning, the Block Error Rate of statistics primary system in the time statistical window.
Described step 2) specifically comprise following treatment step:
2.1) judge that whether the Block Error Rate of system is more than or equal to the call drop block error probability desired value; If then change step 2.2); Otherwise keep radio bearer and return step 1);
2.2) Block Error Rate of statistical system is continuously more than or equal to the number of times of call drop block error probability desired value; When number of times more than or equal to counting during threshold value, releasing wireless loading; Otherwise return step 1).
Described step 2.2) Block Error Rate that is specially the mode statistical system that adopts counter in is continuously more than or equal to the number of times of call drop block error probability desired value.
Described step 2.2) the counting threshold value in is configurable count value.
The present invention judges quality of services for users by layer 2 packet loss of monitoring transmitting terminal, and this packet loss information can not take too much bandwidth of air-interface, can be in time the user of bad channel quality be carried out respective handling, has improved the capacity of system.
Description of drawings
Fig. 1 is the process chart of the method for the invention;
Fig. 2 is the process chart of the method for the invention one embodiment.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
As shown in Figure 1, described method of the present invention is to judge quality of services for users by layer 2 packet loss of monitoring transmitting terminal, thereby in time the user of bad channel quality is handled, and improves the capacity of system.Comprise following treatment step:
Step 101: layer 2 dynamic monitoring block error rate BLER in timing statistics of transmitting terminal;
Step 102: judge that block error rate BLER whether more than or equal to call drop block error probability desired value BLERtarget_drop, carry out step 103 in this way; Otherwise carry out step 104;
Step 103: releasing wireless loading;
Step 104: keep radio bearer.
Wherein, Block Error Rate
Call drop block error probability desired value BLERtarget_drop is configurable desired value, can it be configured by the requirement of channel quality or raising power system capacity.
As shown in Figure 2, the handling process of one embodiment of the invention comprises following steps:
Step 201: the layer of transmitting terminal 2 is monitored block error rate BLER in statistical window, adopts sliding window mode, layout, the then Block Error Rate of statistics primary system in the time statistical window during one of every cunning;
Step 202: judge whether block error rate BLER is greater than or equal to call drop block error probability desired value BLERtarget_drop, if be greater than or equal to, then execution in step 203; Otherwise execution in step 206;
Step 203: trigger event A, and the counter of incident A added 1;
The counter of step 204: incident A is greater than or equal to the counting thresholding of incident A, and then execution in step 205, otherwise gets back to step 201;
Step 205: releasing wireless loading;
Step 206: keep radio bearer, the counter O reset of incident A turns back to step 201.
For step 202, be actually one and judge system's Block Error Rate whether continuously more than or equal to the process of call drop block error probability desired value, when system's Block Error Rate not continuously more than or equal to the call drop block error probability desired value, then keep radio bearer; When said process occurring, adopt counter to continuously more than or equal to the number of times of call drop block error probability desired value add up, when counting on more than or equal to counting thresholding, then releasing wireless loading.The counting thresholding is configurable count value, and the demand that improves capacity according to system is configured.
Because the channel quality missionary society of eating dishes without rice or wine causes the increase in RTCP flow and head length time, but the RTCP bag has the characteristic to the packet loss sensitivity, and layer 2 then sends the RTCP bag in order to guarantee the transmission of RTCP in RTCP wraps tolerable time delay scope so; And the RTP bag has the characteristic of delay sensitive, can tolerate the packet loss of certain probability.The present invention can adapt to the requirement of different RTP (RTCP)/UDP/IPv6, only needs according to system's actual conditions the call drop block error probability desired value to be carried out corresponding configuration; Come the dynamically Block Error Rate of monitoring system by layer 2, and thereby itself and call drop block error probability desired value relatively selected to discharge or keep radio bearer, adopt this method, the packet loss information of monitoring can not take too much bandwidth of air-interface, also can be in time the user of bad channel quality be carried out respective handling, reached the purpose that under the situation of bad channel quality, also can improve power system capacity.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (7)
1. a method that improves capability of wireless communication system is characterized in that, described method comprises following treatment step:
1) block error rate BLER of layer 2 dynamic monitoring system of transmitting terminal;
2) if BLER more than or equal to call drop block error probability desired value, then releasing wireless loading; Otherwise maintenance radio bearer.
2. the method for raising capability of wireless communication system according to claim 1 is characterized in that, described block error rate BLER is by formula
Obtain.
3. the method for raising capability of wireless communication system according to claim 1 is characterized in that, described call drop block error probability desired value is configurable desired value.
4. according to the method for claim 1 or 3 described raising capability of wireless communication system, it is characterized in that, the Block Error Rate of dynamic monitoring system is specially in the described step 1): the layer 2 of transmitting terminal adopts sliding window modes, layout during one of every cunning, the Block Error Rate of statistics primary system in the time statistical window.
5. according to the method for claim 1 or 3 described raising capability of wireless communication system, it is characterized in that described step 2) specifically comprise following treatment step:
2.1) judge that whether the Block Error Rate of system is more than or equal to the call drop block error probability desired value; If then change step 2.2); Otherwise keep radio bearer and return step 1);
2.2) Block Error Rate of statistical system is continuously more than or equal to the number of times of call drop block error probability desired value; When number of times more than or equal to counting during threshold value, releasing wireless loading; Otherwise return step 1).
6. the method for raising capability of wireless communication system according to claim 5 is characterized in that, described step 2.2) in be specially the mode statistical system that adopts counter Block Error Rate continuously more than or equal to the number of times of call drop block error probability desired value.
7. the method for raising capability of wireless communication system according to claim 5 is characterized in that, described step 2.2) in the counting threshold value be configurable count value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710075166XA CN101330716A (en) | 2007-06-21 | 2007-06-21 | Method for improving capability of wireless communication system |
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| CNA200710075166XA CN101330716A (en) | 2007-06-21 | 2007-06-21 | Method for improving capability of wireless communication system |
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| CN101330716A true CN101330716A (en) | 2008-12-24 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013056530A1 (en) * | 2011-10-20 | 2013-04-25 | 中兴通讯股份有限公司 | Method, apparatus and system for determining call drop rate |
| CN103873198A (en) * | 2011-06-10 | 2014-06-18 | 华为技术有限公司 | Method and device for correcting channel quality indicator values |
| WO2019153156A1 (en) * | 2018-02-07 | 2019-08-15 | Oppo广东移动通信有限公司 | Wireless communication method and device |
-
2007
- 2007-06-21 CN CNA200710075166XA patent/CN101330716A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103873198A (en) * | 2011-06-10 | 2014-06-18 | 华为技术有限公司 | Method and device for correcting channel quality indicator values |
| WO2013056530A1 (en) * | 2011-10-20 | 2013-04-25 | 中兴通讯股份有限公司 | Method, apparatus and system for determining call drop rate |
| WO2019153156A1 (en) * | 2018-02-07 | 2019-08-15 | Oppo广东移动通信有限公司 | Wireless communication method and device |
| US10911968B2 (en) | 2018-02-07 | 2021-02-02 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method for wireless communication, terminal, and non-transitory computer-readable storage medium |
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Open date: 20081224 |