CN101389058B - Method for processing downlink broadcast message in radio communication system - Google Patents
Method for processing downlink broadcast message in radio communication system Download PDFInfo
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- CN101389058B CN101389058B CN200710145338A CN200710145338A CN101389058B CN 101389058 B CN101389058 B CN 101389058B CN 200710145338 A CN200710145338 A CN 200710145338A CN 200710145338 A CN200710145338 A CN 200710145338A CN 101389058 B CN101389058 B CN 101389058B
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Abstract
The invention discloses a method for processing downlink broadcast message in a wireless communication system, comprising the following steps: a base station sends the downlink broadcast message; a wireless terminal communicated with the base station normally can not receive the downlink broadcast message accurately; the wireless terminal learns that the content of the downlink broadcast message changes with the stored correlative broadcast message, sends notification message through an uplink channel to inform the base station of not receiving the sent downlink broadcast message accurately, and requires the base station to retransmit the sent downlink broadcast message. By adopting the method, the base station determines the retransmitting strategy of the downlink broadcast message according to the information fed back by the wireless terminal, thereby, the wireless terminal can obtain an uplink parameter and a downlink parameter accurately, and the utilization rate of the wireless resource can be improved.
Description
Technical field
The present invention relates to wireless communication field, be specifically related to a kind of method that is used for handling the wireless communication system downlink broadcast message.
Background technology
In wireless communication system, the base station sends to all wireless terminals through the downlink broadcast channel with broadcast, and each wireless terminal obtains the important parameter relevant with communication through correct these broadcasts of resolving; Such as emission parameter of up-downgoing etc.; Thereby keep communicating by letter normally with the base station,, then possibly keep communicating by letter normally with the base station if wireless terminal can not correctly be resolved these broadcasts; May cause waste of radio resources, thereby influence the performance of wireless communication system.It may be noted that the said descending base station that is meant arrives the wireless terminal direction, up be meant wireless terminal to the base station direction.
Yet in present wireless communication system; The parsing situation of the downlink broadcast message that wireless terminal generally can't send the base station is fed back; May occur the base station like this and not know whether wireless terminal obtains under the situation of downlink broadcast message; Just initiatively allocation of downlink resource or ascending resource are given and are failed correctly to resolve the wireless terminal of downlink broadcast message, and wireless terminal can't utilize these resources to resolve or send data, thereby have wasted valuable Radio Resource.
Summary of the invention
The objective of the invention is; A kind of method that is used for handling the wireless communication system downlink broadcast message is proposed; Exist in the prior art in order to overcome; Can't correctly receive under the situation of downlink broadcast message at wireless terminal, can not utilize the Radio Resource of base station assigns and cause the problem of valuable waste of radio resources.
In order to realize the foregoing invention purpose, the present invention specifically is achieved in that
A kind of method that is used for handling the wireless communication system downlink broadcast message comprises the steps:
Step 1, downlink broadcast message is sent in the base station;
Step 2 fails correctly to receive downlink broadcast message with the wireless terminal of base station proper communication;
Step 3; The content that wireless terminal is known said downlink broadcast message changes with the content of the relevant broadcasts message of having preserved; Through up channel send a notification message informing base station its fail the downlink broadcast message that correct reception sent, require the base station to resend the said downlink broadcast message that has sent.
In the step 2 of the method for the invention, said wireless terminal fails correctly to receive downlink broadcast message, specifically be meant,
Said wireless terminal can't be resolved the downlink broadcast message that receives.
In the step 2 of the method for the invention, said wireless terminal fails correctly to receive downlink broadcast message, specifically be meant,
Said wireless terminal misses the downlink broadcast message that reception has been sent.
In the step 1 of the method for the invention, said base station is when wireless terminal falls into the down time interval of park mode, sends downlink broadcast message.
In the step 1 of the method for the invention, said base station is when wireless terminal does not fall into the listening period interval of idle pulley, sends downlink broadcast message.
In the step 3 of the method for the invention; Wireless terminal is provided with a waiting timer;, timer do not receive the downlink broadcast message that the base station resends after finishing; Perhaps before timer finishes, can't resolve the downlink broadcast message that the base station resends, then wireless terminal resends notification message and gives the base station.
Connect above-mentioned technical scheme; In the said step 3; If wireless terminal was not received the downlink broadcast message that the base station resends after the said waiting timer that resets finished; Perhaps wireless terminal can't be resolved the downlink broadcast message that the base station resends before the said waiting timer that resets finishes, and then wireless terminal carries out network and inserts again and initialization.
In the step 3 of the method for the invention, before said timer finished, wireless terminal received and resolves the downlink broadcast message that the base station resends, then timeing closing device.
In the method for the invention, said base station is to resend downlink broadcast message through clean culture, multicast or broadcast channel.
In the method for the invention, said notification message is with Header mode, subheader mode, Message mode, and perhaps specific code word mode sends to the base station.
The inventive method can't successfully resolved downlink broadcast message with the wireless terminal of base station proper communication, perhaps misses when receiving downlink broadcast message, and the proactive notification base station, the request base station resends.The retransmission policy of this downlink broadcast message is confirmed according to this wireless terminal feedack in the base station, thereby makes wireless terminal can accurately obtain the up-downgoing parameter, and improves wireless resource utility efficiency.
Description of drawings
Fig. 1 is a main flow chart of realizing the method for the invention;
Fig. 2 is the described concrete process chart of the embodiment of the invention when wireless terminal can't be resolved downlink broadcast message;
Fig. 3 is the described concrete process chart of the embodiment of the invention when wireless terminal is in park mode;
Fig. 4 is the described concrete realization flow figure of the embodiment of the invention when wireless terminal is in idle pulley.
Embodiment
Major technique thought of the present invention is; The content of the downlink broadcast message of finding to receive with the wireless terminal of base station proper communication changes with the content of the relevant broadcasts message of having preserved, causes wireless terminal can't successfully resolve downlink broadcast message, perhaps misses when receiving downlink broadcast message; Informing base station initiatively sends a notification message; The request base station resends, thereby makes wireless terminal can accurately obtain the up-downgoing parameter, and avoids waste of radio resources.
When wireless terminal can't successfully be resolved downlink broadcast message, the concrete steps that adopt the method for the invention to handle were following:
Step 1, downlink broadcast message is sent in the base station;
Step 2 can't successfully be resolved this downlink broadcast message with the wireless terminal of base station proper communication;
Step 3, the content of this downlink broadcast message of wireless terminal judgement changes with the content of the relevant broadcasts message of having preserved;
Step 4, wireless terminal through up channel initiatively send a notification message informing base station its fail and resolve the downlink broadcast message that has sent base station.
Based on above-mentioned steps 4, wireless terminal can be set waiting timer, after timer finishes, does not receive the content of upgrading in broadcast that the base station resends or the broadcast, and wireless terminal can resend notice to the base station.
Wireless terminal is attempted after the certain number of times of informing base station, does not still receive the content of upgrading in broadcast that the base station resends or the broadcast, and wireless terminal can carry out network insertion and initialization again.
Based on above-mentioned steps 4, the base station can be through clean culture, and the mode of multicast or broadcasting resends this downlink broadcast message;
Based on above-mentioned steps 4, the base station also can be through clean culture, and the mode of multicast or broadcasting is sent the content of upgrading in the more last corresponding message in this downlink broadcast message.
When wireless terminal missed the reception downlink broadcast message, the concrete steps that adopt the method for the invention to handle were following:
Step 1, downlink broadcast message is sent in the base station;
Step 2, wireless terminal receive and the content of the content of judging this downlink broadcast message and the relevant broadcasts message of having preserved changes;
Step 3, wireless terminal through up channel initiatively send a notification message informing base station its miss and receive the downlink broadcast message that has sent the base station;
Based on above-mentioned steps 3, wireless terminal can be set waiting timer, after timer finishes, does not receive the content of upgrading in broadcast that the base station resends or the broadcast, and wireless terminal can resend notice to the base station.
Wireless terminal is attempted after the certain number of times of informing base station, does not still receive the content of upgrading in broadcast that the base station resends or the broadcast, and wireless terminal can carry out network insertion and initialization again.
Based on above-mentioned steps 3, the base station can be through clean culture, and the mode of multicast or broadcasting resends this downlink broadcast message;
Based on above-mentioned steps 3, the base station also can be through clean culture, and the mode of multicast or broadcasting is sent the content of upgrading in the more last corresponding message in this downlink broadcast message.
Said wireless terminal can be with Header (head) mode, subheader (son head) mode to the form of the announcement information that send the base station, Message (message) mode, or with specific code word mode.The mode that wireless terminal sends announcement information can be independently to send on the up channel, also can be to send with data.
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.
IEEE (Institute of E1ectrical and Electronics Engineers) the 802.16th, a kind of broadband wireless MAN technology; Be intended to for fixed broadband wireless access system provides efficient, as to be suitable for and to have good interoperability performance access means, its agreement is mainly paid close attention to the air interface partial content.
The wireless communication system that adopts this standard is in running, and DCD (downlink channel descriptor, down link is described), UCD (uplink channeldescriptor are periodically broadcasted through down channel in the base station; The up link description) message is given all wireless terminals; Wireless terminal has only success to obtain the emission parameter that could obtain up-downgoing after these message, communicates by letter normally with the base station, it may be noted that; These message possibly have renewal in the process of cycle transmission.If failing, wireless terminal resolves these message; Wait until that according to the described method of standard next cycle receives and resolve these message again; During this period of time allocation of downlink or ascending resource are given wireless terminal in the base station like this; And wireless terminal can't successfully be resolved downlink data or rationally utilized ascending resource, causes valuable waste of radio resources.
As shown in Figure 2, in the wireless communication system that adopts IEEE 802.16 standards, suppose that the base station gives all wireless terminals in down channel periodic broadcast DCD message, specifically treatment step is following:
The first step, the base station sends DL_MAP message through down channel broadcasting and DCD message is given all wireless terminals.
Second step; Whether wireless terminal is successfully resolved its DCD message that receives is judged; If wireless terminal is successfully resolved its DCD message that receives, then this wireless terminal finishes downlink broadcast DCD Message Processing flow process, otherwise; Wireless terminal can't successfully be resolved the DCD message that send the base station, then changes for the 3rd step over to.
The 3rd step; Wireless terminal judges according to the DCD_Count field in the DL_MAP message that receives whether DCD message of sending the base station and the DCD message of having preserved change, if do not change, then can wireless terminal receive the DCD message (do not consider that this message successfully resolves) of base station transmission; Finish the downlink broadcast message handling process; Otherwise, change, changed for the 4th step over to.
The 4th step, the wireless terminal downlink broadcast DCD message that has sent its parsing base station that fails through up channel (competition or non-competing) informing base station, and set waiting timer.
If before timer finishes; Wireless terminal receives and successfully resolves DCD message that the base station resends through descending clean culture, multicast or broadcast channel or the variation part in the DCD message; Then this wireless terminal is closed waiting timer, and downlink broadcast DCD Message Processing flow process finishes; If wireless terminal still can't successfully be resolved the DCD message that the base station resends before timer finishes, perhaps, do not receive by timer the response of base station after finishing, then changed for the 5th step over to.
In the 5th step, wireless terminal resends notification message through up channel and gives the base station, and the request base station resends DCD message, and resets waiting timer; If wireless terminal is not still received the response of base station after the trial of certain number of times, then wireless terminal finishes downlink broadcast DCD Message Processing flow process, carries out network and inserts again and initialization.
As shown in Figure 3, in the wireless communication system that adopts IEEE 802.16 standards, suppose the base station in down channel periodic broadcast DCD message to all wireless terminals, when wireless terminal was in park mode, concrete treatment step was following:
The first step, base station are sent downlink broadcast DCD message and are given all wireless terminals in the coverage, and the time of base station transmission downlink broadcast DCD message falls into the down time interval of the wireless terminal of park mode.
Second step; The wireless terminal that is in park mode is successfully decoded from the DCD_Count field in the DL_MAP message of base station in the up duration interval; Find that this field is inequality with the DCD_Count field of oneself safeguarding; Wireless terminal learns that DCD message has renewal, and it misses the downlink broadcast DCD message that has sent the reception base station to wireless terminal through up channel (competition or non-competing) informing base station, and sets waiting timer.
If before timer finishes; Wireless terminal receives and successfully resolves the base station through descending clean culture, multicast or the DCD message of broadcast channel transmission or the variation part of DCD message; Then wireless terminal is closed waiting timer; And getting into park mode again, downlink broadcast DCD Message Processing flow process finishes; If before timer finished, wireless terminal still can't successfully be resolved the DCD message that the base station resends, perhaps, timer do not receive the response of base station after finishing, then changed for the 3rd step over to.
In the 3rd step, wireless terminal resends notice through up channel and gives the base station, and the request base station resends DCD message, and resets waiting timer; If wireless terminal is not still received the response of base station after the trial of certain number of times, then wireless terminal finishes downlink broadcast DCD Message Processing flow process, carries out network and inserts again and initialization.
As shown in Figure 4, in the wireless communication system that adopts IEEE 802.16 standards, suppose that the base station gives all wireless terminals in down channel periodic broadcast DCD message, when wireless terminal was in idle pulley, specifically treatment step was following:
The first step, base station are sent downlink broadcast DCD message and are given all wireless terminals in the coverage, and the time of base station transmission downlink broadcast DCD message does not fall into the listening intervals of the wireless terminal of idle pulley.
Second step; The wireless terminal that is in idle pulley is successfully decoded in listening intervals from the DCD_Count field in the .DL_MAP message of base station; Find that this field is inequality with the DCD_Count field of oneself safeguarding; Wireless terminal just can know that DCD message has renewal, and it misses the downlink broadcast DCD message that has sent the reception base station to wireless terminal through up channel (competition or non-competing) informing base station, and sets waiting timer.
If before timer finishes; Wireless terminal receives and successfully resolves the base station through descending clean culture, multicast or the DCD message of broadcast channel transmission or the variation part of DCD message; Then wireless terminal is closed waiting timer; And getting into idle pulley again, downlink broadcast DCD Message Processing flow process finishes; If wireless terminal still can't successfully be resolved the DCD message that the base station resends, perhaps, timer do not receive the response of base station after finishing, then changed for the 3rd step over to.
In the 3rd step, wireless terminal resends notice at up channel and gives the base station, and the request base station resends DCD message, and resets waiting timer; If wireless terminal is not still received the response of base station after the trial of certain number of times, then wireless terminal finishes downlink broadcast DCD Message Processing flow process, carries out network and inserts again and initialization.
It fails to obtain corresponding broadcast to wireless terminal through the up channel informing base station; This up channel is that wireless terminal is distributed to non-competing mode in the base station; For example fast feedback channel or base station assigns are used for the ascending resource of service data transmission to wireless terminal; Also can be that wireless terminal is distributed to competitive way in the base station; Under competitive way, wireless terminal can and utilize the specific ranging sign indicating number of base station appointment or in the ranging of base station appointment sign indicating number section, select a ranging sign indicating number to tell some wireless terminal of base station to fail to obtain broadcast according to certain algorithm according to certain algorithm selection transmission opportunity.
In the wireless communication system that adopts IEEE 802.16 standards, identical to the handling process of UCD message and DCD message.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a method that is used for handling the wireless communication system downlink broadcast message is characterized in that, comprises the steps:
Step 1, downlink broadcast message is sent in the base station;
Step 2 fails correctly to receive downlink broadcast message with the wireless terminal of base station proper communication;
Step 3; The content that wireless terminal is known said downlink broadcast message changes with the content of the relevant broadcasts message of having preserved; Through up channel send a notification message informing base station its fail the downlink broadcast message that correct reception sent, require the base station to resend the said downlink broadcast message that has sent; Said wireless terminal is when sending a notification message; One waiting timer is set;, waiting timer do not receive the downlink broadcast message that the base station resends after finishing; Perhaps before waiting timer finishes, can't resolve the downlink broadcast message that the base station resends, then wireless terminal resends notification message and gives the base station, resets waiting timer; Wherein, said base station resends downlink broadcast message through multicast or broadcast channel.
2. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 1 is characterized in that, in the said step 2, said wireless terminal fails correctly to receive downlink broadcast message, specifically be meant,
Said wireless terminal can't be resolved the downlink broadcast message that receives.
3. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 1 is characterized in that, in the said step 2, said wireless terminal fails correctly to receive downlink broadcast message, specifically be meant,
Said wireless terminal misses the downlink broadcast message that reception has been sent.
4. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 3 is characterized in that, in the said step 1,
Said base station is when wireless terminal falls into the down time interval of park mode, sends downlink broadcast message.
5. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 3 is characterized in that, in the said step 1,
Said base station is when wireless terminal does not fall into the listening period interval of idle pulley, sends downlink broadcast message.
6. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 1 is characterized in that, in the said step 3,
If wireless terminal was not received the downlink broadcast message that the base station resends after the said waiting timer that resets finished; Perhaps wireless terminal can't be resolved the downlink broadcast message that the base station resends before the said waiting timer that resets finishes, and then wireless terminal carries out network and inserts again and initialization.
7. the method that is used for handling the wireless communication system downlink broadcast message as claimed in claim 1 is characterized in that, in the said step 3,
Before said waiting timer finished, wireless terminal received and resolves the downlink broadcast message that the base station resends, and then closes waiting timer.
8. like claim 2 or the 3 described methods that are used for handling the wireless communication system downlink broadcast message, it is characterized in that,
Said notification message is with Header mode, subheader mode, Message mode, and perhaps specific code word mode sends to the base station.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710145338A CN101389058B (en) | 2007-09-10 | 2007-09-10 | Method for processing downlink broadcast message in radio communication system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710145338A CN101389058B (en) | 2007-09-10 | 2007-09-10 | Method for processing downlink broadcast message in radio communication system |
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| CN101389058A CN101389058A (en) | 2009-03-18 |
| CN101389058B true CN101389058B (en) | 2012-09-05 |
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| CN111200789B (en) * | 2020-01-07 | 2022-04-26 | 中国联合网络通信集团有限公司 | Service data transmission method and device |
Citations (4)
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|---|---|---|---|---|
| CN1620834A (en) * | 2001-12-20 | 2005-05-25 | 高通股份有限公司 | Acknowledging missed messages broadcast on a control channel |
| WO2006049438A1 (en) * | 2004-11-03 | 2006-05-11 | Samsung Electronics Co., Ltd. | System and method for transmitting/receiving hybrid automatic repeat request buffer capability information in broadband wireless access communication system |
| CN1805602A (en) * | 2005-01-10 | 2006-07-19 | 华为技术有限公司 | Method of implementing switching mobile station to target base station |
| CN1891003A (en) * | 2003-10-08 | 2007-01-03 | 高通股份有限公司 | Method and apparatus for feedback reporting in a wireless communications system |
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- 2007-09-10 CN CN200710145338A patent/CN101389058B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1620834A (en) * | 2001-12-20 | 2005-05-25 | 高通股份有限公司 | Acknowledging missed messages broadcast on a control channel |
| CN1891003A (en) * | 2003-10-08 | 2007-01-03 | 高通股份有限公司 | Method and apparatus for feedback reporting in a wireless communications system |
| WO2006049438A1 (en) * | 2004-11-03 | 2006-05-11 | Samsung Electronics Co., Ltd. | System and method for transmitting/receiving hybrid automatic repeat request buffer capability information in broadband wireless access communication system |
| CN1805602A (en) * | 2005-01-10 | 2006-07-19 | 华为技术有限公司 | Method of implementing switching mobile station to target base station |
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