CN101340624B - Method for dynamically regulating downlink broadcast message sending period - Google Patents
Method for dynamically regulating downlink broadcast message sending period Download PDFInfo
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- CN101340624B CN101340624B CN200710137719XA CN200710137719A CN101340624B CN 101340624 B CN101340624 B CN 101340624B CN 200710137719X A CN200710137719X A CN 200710137719XA CN 200710137719 A CN200710137719 A CN 200710137719A CN 101340624 B CN101340624 B CN 101340624B
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Abstract
The invention discloses a method for dynamically adjusting the transmission period of downlink broadcast messages, which includes the following steps: S102, a base station finds the broadcast messages which are to be sent in the next period are updated to a certain extent, then the transmission period of the broadcast messages is adjusted; S104, after the broadcast messages are transmitted according to the adjusted transmission period for a while, the transmission period of the broadcast messages is readjusted; S106, the broadcast messages are transmitted according to the readjusted transmission period. The method of the invention dynamically adjusts the transmission period of the broadcast messages by the base station according to that whether the downlink broadcast period is updated or not, so as to shorten the time for a mobile terminal to successfully obtain the updated broadcast information, thus improving utilization ratio of wireless resources.
Description
Technical field
The invention belongs to the communications field, be specifically related to the method that a kind of downlink broadcast message sending period is dynamically adjusted in the wireless communication system.
Background technology
In the wireless communication system, the base station sends to all portable terminals according to some cycles with broadcast, each portable terminal obtains to carry out follow-up work with the relevant important parameter of communicating by letter by being correctly decoded these broadcasts, if failing for some reason, portable terminal receives these broadcasts, and the relevant broadcasts message that this broadcast is received is before upgraded to some extent, then portable terminal possibly can't carry out follow-up work, thereby cause waste of radio resources, influence the performance of wireless communication system.It may be noted that the portable terminal direction is arrived in the descending base station that is meant among the present invention, the up portable terminal that is meant is to the base station direction.
Usually, the decoding situation of the downlink broadcast message that portable terminal does not send the base station is made any feedback, can occur the base station like this and not know whether portable terminal obtains under the situation of its broadcast, allocation of downlink resource or ascending resource are given the portable terminal of failing to be correctly decoded broadcast, and these portable terminals possibly can't utilize these resources to receive or send data, thereby wasted valuable Radio Resource.
For example adopting IEEE (Institute of Electrical and Electronics Engineers, U.S. Institute of Electrical and Electronics Engineers) 802.16 wireless communication system is in running, DCD (downlink channel descriptor is periodically broadcasted by down channel in the base station, down channel is described), UCD (uplink channel descriptor, the up channel description) message is given all portable terminals, portable terminal just can complete successfully follow-up process after having only success to obtain these message, it may be noted that, these message may have renewal in the process of cycle transmission.If failing, portable terminal obtains these message, according to the method for standard to describe is next cycle these message of decoding again by the time, but this cycle may be longer, portable terminal is given in base station during this period of time allocation of downlink or ascending resource, and portable terminal possibly can't successfully decode downlink data or rationally utilize ascending resource, cause waste of radio resources.
Summary of the invention
The invention provides the method that a kind of downlink broadcast message sending period is dynamically adjusted, its purpose is to shorten the time of the broadcast after portable terminal successfully obtains to upgrade, and improves wireless resource utility efficiency.
The technical scheme that solution the technology of the present invention problem is adopted is: the method that a kind of downlink broadcast message sending period is dynamically adjusted may further comprise the steps:
S102, base station are found and will be upgraded to some extent in the broadcast that following one-period sends, adjust the transmission cycle of broadcast;
S104, send broadcast after a period of time according to the adjusted transmission cycle, adjust the transmission cycle of broadcast once more;
S106, send broadcast according to adjusted transmission cycle once more.
Further, the broadcast of upgrading the more last cycle transmission of the broadcast that is meant the transmission of following one-period to some extent described in the S102 is upgraded to some extent.
Further, adjusted broadcast message sending period is not more than initial broadcast message sending period described in the S102.
Further, a period of time is the described integral multiple of adjusting the back transmission cycle among the S104.
Further, if in described a period of time, find and to upgrade to some extent again in the broadcast that following one-period sends, then return and carry out S102 among the S104.
Further, the broadcast message sending period of setting once more described in the S104 is not less than adjusted broadcast message sending period described in the S102.
Further, adjusted once more broadcast message sending period is initial broadcast message sending period described in the S106.
Whether the present invention dynamically adjusts the transmission cycle of these broadcasts by the base station according to the renewal in downlink broadcast cycle, thereby shortens the time of the broadcast after portable terminal successfully obtains to upgrade, and improves wireless resource utility efficiency.
Description of drawings
Fig. 1 is a basic flow sheet of the present invention;
Fig. 2 is concrete implementing procedure figure of the present invention;
Fig. 3 is the applicating flow chart of the present invention in the IEEE802.16 system.
Embodiment
Below in conjunction with accompanying drawing, further elaboration technical scheme of the present invention.
Referring to Fig. 1, be basic flow sheet of the present invention.
Referring to Fig. 2, be concrete implementing procedure figure of the present invention, suppose that the cycle of base station transmission broadcast is T1, the initial value of counter variable i is 1, specifically may further comprise the steps:
S201, base station are found and will be upgraded to some extent in the broadcast that the more last cycle of the broadcast that following one-period sends sends, carry out next step;
S202, base station adjustment send the period T 1 of broadcast, and proportionally factor k1 (0＜k1＜=1) the adjustment transmission cycle is T2=T1*k1 usually, carries out next step;
S203, base station send broadcast according to adjusted period T 2, and i=i+1 carries out next step;
If the S204 base station finds and will upgrade to some extent again in the more last broadcast of broadcast that following one-period sends that then i=1 carries out S203; If the broadcast that the base station will send is not upgraded and i＜N, N is a constant, carries out S203; If the broadcast that the base station will send is not upgraded and i=N, carry out next step;
S205, base station adjustment send the period T 3=T2*k2 (k2 is a scale factor, k2＞=1) of broadcast;
S206, base station send broadcast according to the period T 3 of adjusted transmission broadcast.
Further introduce technical scheme of the present invention below by example.
IEEE802.16 is a kind of broadband wireless MAN technology, be intended to for fixed broadband wireless access system provide one efficient, practical and have the access means of good interoperability performance, its agreement is mainly paid close attention to the air interface partial content.As shown in Figure 3, be the applicating flow chart of the present invention in the IEEE802.16 system.
S301, if it is T1=10 second that the base station sends the cycle of broadcast, the base station finds that at the 10th second the DCD message that will send upgrades to some extent;
S302, adjustment send the period T 2=T1*k1 of broadcast, wherein scale factor k1 can be defined as a constant by system in advance, perhaps by the base station according to before portable terminal the reception condition of downlink data is adjusted the size of this variable, supposition k1 is 0.2 in this example, then T2=2 second;
S303, base station be according to 2 seconds adjusted cycles, in time period M=6s (M is the integral multiple of T2 usually), in promptly the 11st second to the 16th second, sends DCD message;
S304, if the base station finds that at the 14th second DCD message has renewal again, then the moment behind the DCD information updating continues to send broadcast according to 2 seconds cycles, time span is 6 seconds, in promptly the 15th second to the 20th second, by that analogy, if DCD message is not upgraded in this time period, then this section period finishes base station, back adjustment transmission period T 3=T2*k2, wherein scale factor k2 can be defined as a constant by system in advance, perhaps the reception condition of downlink data is adjusted the size of this variable by portable terminal before the basis of base station, supposition k2 is 5 in this example, then T3=10 second.It may be noted that, calculate the time reference starting point in every kind of initial moment of Cycle Length in the said process and be the 1st second, the initial moment when promptly being the cycle with T1 is the 1st second, the 11st second, the 21st second ..., the initial moment when being the cycle with T2 is the 1st second, the 3rd second, the 5th second ..., the initial moment when being the cycle with T3 is the 1st second, the 11st second, the 21st second ....
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (6)
1. the method that downlink broadcast message sending period is dynamically adjusted is characterized in that, may further comprise the steps:
S102: the base station finds and will upgrade to some extent in the broadcast that following one-period sends that adjust the transmission cycle of broadcast, adjusted broadcast message sending period is less than the broadcast message sending period before adjusting;
S104: after a period of time, adjust the transmission cycle of broadcast once more according to adjusted transmission cycle transmission broadcast;
S106: according to the adjusted transmission cycle sends broadcast once more.
2. the method that downlink broadcast message sending period as claimed in claim 1 is dynamically adjusted is characterized in that, the broadcast that the more last cycle of broadcast that upgrading to some extent described in the step S102 is meant the transmission of following one-period sends is upgraded to some extent.
3. the method that downlink broadcast message sending period as claimed in claim 2 is dynamically adjusted is characterized in that a period of time described in the step S104 is the integral multiple of described adjusted broadcast message sending period.
4. as the dynamic method of adjusting of any described downlink broadcast message sending period among the claim 1-3, it is characterized in that, among the step S104,, then return execution in step S102 if in described a period of time, find and to upgrade to some extent again in the broadcast that following one-period sends.
5. the method that downlink broadcast message sending period as claimed in claim 4 is dynamically adjusted is characterized in that adjusted once more broadcast message sending period is greater than adjusted broadcast message sending period described in the step S102 described in the step S106.
6. the method that downlink broadcast message sending period as claimed in claim 4 is dynamically adjusted is characterized in that, adjusted once more broadcast message sending period described in the step S106 is the broadcast message sending period before adjusting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710137719XA CN101340624B (en) | 2007-07-06 | 2007-07-06 | Method for dynamically regulating downlink broadcast message sending period |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710137719XA CN101340624B (en) | 2007-07-06 | 2007-07-06 | Method for dynamically regulating downlink broadcast message sending period |
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| CN101340624A CN101340624A (en) | 2009-01-07 |
| CN101340624B true CN101340624B (en) | 2011-11-30 |
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| CN200710137719XA Expired - Fee Related CN101340624B (en) | 2007-07-06 | 2007-07-06 | Method for dynamically regulating downlink broadcast message sending period |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101631323B (en) * | 2009-07-30 | 2012-03-21 | 京信通信系统（中国）有限公司 | Base station system broadcast control message transmitting method and device thereof |
| CN102026142B (en) * | 2009-09-21 | 2015-04-08 | 华为技术有限公司 | Method, device and access network for sending otherratneighborlist |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1829340A (en) * | 2005-03-03 | 2006-09-06 | 中兴通讯股份有限公司 | Method for transmitting broadcast channel assignment message in CDMA standard group communication system |
| CN1951038A (en) * | 2004-05-07 | 2007-04-18 | 三星电子株式会社 | Method and system for transmitting and receiving broadcast service data in a wireless communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1951038A (en) * | 2004-05-07 | 2007-04-18 | 三星电子株式会社 | Method and system for transmitting and receiving broadcast service data in a wireless communication system |
| CN1829340A (en) * | 2005-03-03 | 2006-09-06 | 中兴通讯股份有限公司 | Method for transmitting broadcast channel assignment message in CDMA standard group communication system |
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| CN101340624A (en) | 2009-01-07 |
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