CN104185306A - Implicit release method of semi-static resource allocation - Google Patents
Implicit release method of semi-static resource allocation Download PDFInfo
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- CN104185306A CN104185306A CN201310202926.4A CN201310202926A CN104185306A CN 104185306 A CN104185306 A CN 104185306A CN 201310202926 A CN201310202926 A CN 201310202926A CN 104185306 A CN104185306 A CN 104185306A
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Abstract
The application discloses an implicit release method of semi-static resources. The implicit release method includes: A. a sender detects that no high-level data arrive for a continuous period of time, and judges whether semi-static resources can be released, and if yes, step B is executed; B. the sender transmits a predetermined number of empty data frames used for indicating implicit release of resources, wherein the empty data frames carry preset resource element (RE) sub-patterns and do not carry actual signals; C. after receiving the data frames and before normal signal analysis, a receiver performs RE energy detection first according to the predetermined RE sub-patterns, if energy of the predetermined RE sub-patterns detected by continuous N frames satisfies predetermined conditions, semi-static resources are released, and N is a natural number; and D. the sender releases the semi-static resources after transmitting the predetermined number of empty data frames. The scheme of the implicit release method of semi-static resources can also improve reliability of resource release under a circumstance of a relatively high channel block error rate.
Description
Technical field
The application relates to wireless communication technology field, relates in particular to the implicit expression method for releasing that a kind of semi-static resource is distributed.
Background technology
In cellular radio Communication system, the relatively fixing and smaller business for Fixed Time Interval, data package size, and some need to guarantee the particular service that resource is distributed, for reducing signaling consumption and scheduling time delay, the general mode that adopts semi-persistent scheduling, is user and periodically distributes up-downgoing resource for the initial transmission of business.Because semi-static resource authorization once distributes or closes resource, so the distribution of resource and release reliability are important.
For downlink transfer, if base station has discharged resource, and terminal is not received resource release command for a certain reason, when base station is used for to other-end transport service by this resource, the terminal that is released resource still thinks that resource is self, still resolve, be so not only certain to parse error, and waste terminal power.If up release failure is more serious, when base station will self think that the resource having discharged distributes to new terminal, and former terminal is still carried out upstream data transmission in this resource, can directly cause two terminal upstream datas in the collision of place, base station, the failure of base station resolution data.
The release of current semi-static resource can adopt explicit and implicit expression release.Explicit release is directly to send resource to close authorization command, and implicit expression discharges general by detecting empty bag number, arrives after a certain amount of empty bag detection threshold terminal and base station and automatically discharges semi-static resource.
Although it is better that explicit resource discharges the decoding performance of authorization channel self design adopting, but be just better than Traffic Channel, can not guarantee all correct, so discharge to be provided with for semi-static resource in LTE system, authorize feedback mechanism and authorize retransmission mechanism, but when interference is larger, even if retransmit, also still there is the possibility of makeing mistakes.And implicit resource discharges the empty packet inspection technical adopting, although can avoid issuing of authorization command, sky wraps to be not equal to and does not send data, but transmission is filling bit, that is to say before correct resolution data bag, do not know that this bag is for data traffic packet or empty bag.Once parse error, and do not know to send for sky bag.Empty bag detects and carries out in Traffic Channel in addition, and the analysis feature of Traffic Channel itself is worse than control channel, since send the control channel of authorization command, all likely makes mistakes, and the False Rate that so empty bag detects wants large more.
Summary of the invention
The implicit expression method for releasing that the application provides a kind of semi-static resource to distribute can also can improve the reliability that resource discharges in the situation that channel Block Error Rate is higher.
The implicit expression method for releasing of a kind of semi-static resource that the embodiment of the present application provides, comprising:
A, transmit leg detect self continuous a period of time does not have high level data to arrive, and judges whether semi-static resource can be released, if execution step B;
B, transmit leg transmitting predetermined number be used to indicate the empty Frame that resource implicit expression discharges, in described empty Frame, with default resource element RE sub pattern, and do not carry actual signal;
C, recipient receive after Frame, before carrying out normal signal resolution, first according to predetermined RE sub pattern, carry out RE energy measuring, if the predetermined RE sub pattern energy that N continuous frame detects meets predetermined condition, discharge described semi-static resource; N is natural number;
D, transmit leg discharge semi-static resource after the empty Frame of transmitting predetermined number.
Preferably, described RE sub pattern is business RE sub pattern or pilot tone RE sub pattern.
Preferably, described predetermined condition is that the energy that RE sub pattern detects is less than default absolute sense thresholding.
Preferably, described predetermined condition is that in same frame, the energy ratio of RE sub pattern and transmitting data RE is less than default relative threshold.
Preferably, after being judged as YES described in described steps A, before execution step B, further comprise:
Transmit leg sends explicit resource and discharges mandate indication;
Whether the feedback that transmit leg judgement is received is ACK, if so, process ends, otherwise, execution step B.
As can be seen from the above technical solutions, by detecting the energy of RE sub pattern in single frames or multiframe, come the indication implicit resource of implicit expression to discharge, do not changing under the prerequisite of original system channel architecture and design, using distributing semi-static resource transmitting the Traffic Channel of use itself or the message carrier that pilot signal discharges as resource implicit expression, can in the situation that channel Block Error Rate is higher, also can improve the reliability that resource discharges.
Accompanying drawing explanation
The implicit expression method for releasing schematic flow sheet of the semi-static resource that Fig. 1 provides for the embodiment of the present application;
Fig. 2 is used to indicate data RE pattern and and the pilot tone RE pattern schematic diagram that resource implicit expression discharges in the embodiment of the present application.
Embodiment
The implicit expression method for releasing of a kind of semi-static resource that the application provides, its fundamental design idea is, it is not by layer 2 or the explicit indication of layer 3 order that resource discharges, but in detection method, avoid signal demodulation code, by physical layer signal, come implicit expression to notify, by detecting the energy of data resource element (RE, Resource Element) sub pattern in single frames or multiframe, carry out the different event of indication of implicit expression.As long as have the probability of makeing mistakes owing to relating to the process of physical channel demodulation code, so adopt energy measuring to indicate a certain event.Do not changing under the prerequisite of original system channel architecture and design, will distribute semi-static resource transmitting the Traffic Channel of use itself or the message carrier that pilot signal discharges as resource implicit expression.
The implicit expression method for releasing of the semi-static resource that the application provides comprises:
Set energy threshold value, this threshold value can be absolute figure, can be also the relative energy ratio threshold in itself and normal transmission situation;
In business RE resource or set a plurality of RE sub pattern in pilot frequency design, by the RE sub pattern with different, close the transmission of actual signal, represent the event of different meanings.
The recipient of transmitting first detects the energy of business RE in semi-static Traffic Channel or pilot tone RE, carry out again normal pilot measurement, channel estimating and traffic data demodulation decoding, the appearance that the energy size of transmitting business on the frequency band of use or pilot tone RE by detecting both sides is judged a certain event whether, transmit leg will indicate a certain event to recipient, by regular traffic or pilot tone RE position transmitted signal energy not temporarily.
In order to improve detecting reliability, can adopt transmission and the detection of the RE sub pattern of continuous multiple frames, and multiframe sub pattern can be identical, also can adopt default compound mode to send, and can also represent more event by temporal sub pattern combination.
For making know-why, feature and the technique effect of present techniques scheme clearer, below in conjunction with specific embodiment, present techniques scheme is described in detail.
With the descending example that is transmitted as, the implicit expression method for releasing flow process of the semi-static resource that the embodiment of the present application provides as shown in Figure 1, comprises the steps:
Step 101: transmit leg (for downlink transfer, transmit leg is base station) detects self continuous a period of time does not have high level data to arrive, and judges that descending semi-static resource can be released, and indication bottom carries out resource release operations.
Step 102: base station sends explicit resource and discharges mandate indication.
Step 103: whether the feedback that base station judgement is received is ACK, if so, process ends, otherwise, execution step 104.
Step 104: base station transmitting predetermined number be used to indicate the empty Frame that resource implicit expression discharges, in described empty Frame, with default RE sub pattern, and do not carry actual signal.Preferably, described RE sub pattern is business RE sub pattern or pilot tone RE sub pattern.
Step 105: when terminal detects every frame signal, first carry out RE energy measuring according to predetermined RE sub pattern in received bandwidth range, then carry out normal signal resolution.If the predetermined RE sub pattern energy that N continuous frame detects meets predetermined condition, no matter whether these several frame data demodulation are correct, discharge downlink resource.
Preferably, described predetermined condition is that energy that RE sub pattern detects is less than the energy ratio of RE sub pattern and transmitting data RE in predetermined absolute sense thresholding or same frame and is less than default relative threshold,
Step 105: base station discharges descending semi-static resource after the empty Frame of transmitting predetermined number.By suitable setting, can make base station and terminal discharge descending semi-static resource simultaneously.
Wherein, step 102 is to 103 being optional step, and its effect is before implicit resource discharges, and first attempts carrying out explicit resource release, if implicit resource release is no longer carried out in success, carries out implicit resource release if unsuccessful again.
Fig. 2 has provided and in the embodiment of the present application, has been used to indicate data RE pattern and and the pilot tone RE pattern schematic diagram that resource implicit expression discharges.Pattern in Fig. 2 is only example, in actual use, can be not limited to this, and the enlightenment that those skilled in the art can provide according to this pattern expects adopting other pattern.
Implicit resource for up direction discharges, and only transmit leg need to be changed to terminal, and recipient is changed to base station, can obtain its corresponding flow process with reference to flow process shown in Fig. 1, therefore repeat no more.
The foregoing is only the application's preferred embodiment; not in order to limit the application's protection range; all within the spirit and principle of present techniques scheme, any modification of making, be equal to replacement, improvement etc., within all should being included in the scope of the application's protection.
Claims (5)
1. an implicit expression method for releasing for semi-static resource, is characterized in that, comprising:
A, transmit leg detect self continuous a period of time does not have high level data to arrive, and judges whether semi-static resource can be released, if execution step B;
B, transmit leg transmitting predetermined number be used to indicate the empty Frame that resource implicit expression discharges, in described empty Frame, with default resource element RE sub pattern, and do not carry actual signal;
C, recipient receive after Frame, before carrying out normal signal resolution, first according to predetermined RE sub pattern, carry out RE energy measuring, if the predetermined RE sub pattern energy that N continuous frame detects meets predetermined condition, discharge described semi-static resource; N is natural number;
D, transmit leg discharge semi-static resource after the empty Frame of transmitting predetermined number.
2. method according to claim 1, is characterized in that, described RE sub pattern is business RE sub pattern or pilot tone RE sub pattern.
3. method according to claim 1, is characterized in that, described predetermined condition is that the energy that RE sub pattern detects is less than default absolute sense thresholding.
4. method according to claim 1, is characterized in that, described predetermined condition is that in same frame, the energy ratio of RE sub pattern and transmitting data RE is less than default relative threshold.
5. according to the method described in claim 1 to 4 any one, it is characterized in that, after being judged as YES described in described steps A, before execution step B, further comprise:
Transmit leg sends explicit resource and discharges mandate indication;
Whether the feedback that transmit leg judgement is received is ACK, if so, process ends, otherwise, execution step B.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310202926.4A CN104185306B (en) | 2013-05-28 | 2013-05-28 | A kind of implicit method for releasing of semi-persistent resource distribution |
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| CN201310202926.4A CN104185306B (en) | 2013-05-28 | 2013-05-28 | A kind of implicit method for releasing of semi-persistent resource distribution |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106941726A (en) * | 2016-01-04 | 2017-07-11 | 中国移动通信集团公司 | A kind of information acquisition method and equipment |
| CN107211437A (en) * | 2015-02-17 | 2017-09-26 | 诺基亚通信公司 | The method discharged for resource |
| GB2579792A (en) * | 2018-12-13 | 2020-07-08 | Tcl Communication Ltd | Management of pre-allocated resources |
| CN113453235A (en) * | 2021-06-09 | 2021-09-28 | 中国联合网络通信集团有限公司 | Method and device for allocating wireless resources |
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| US20100111026A1 (en) * | 2008-11-04 | 2010-05-06 | Chia-Chun Hsu | Method and apparatus for improving a semi-persistent scheduling resource release process in a wireless communication system |
| CN101730247A (en) * | 2008-10-29 | 2010-06-09 | 华为技术有限公司 | Method and device for releasing semi-static scheduling resources and user equipment |
| CN102017500A (en) * | 2008-05-02 | 2011-04-13 | 高通股份有限公司 | Method and apparatus for uplink ACK/NACK resource allocation |
| CN102026410A (en) * | 2010-12-21 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for releasing semi-persistent scheduling (SPS) service resources |
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| CN102017500A (en) * | 2008-05-02 | 2011-04-13 | 高通股份有限公司 | Method and apparatus for uplink ACK/NACK resource allocation |
| CN101730247A (en) * | 2008-10-29 | 2010-06-09 | 华为技术有限公司 | Method and device for releasing semi-static scheduling resources and user equipment |
| US20100111026A1 (en) * | 2008-11-04 | 2010-05-06 | Chia-Chun Hsu | Method and apparatus for improving a semi-persistent scheduling resource release process in a wireless communication system |
| CN102026410A (en) * | 2010-12-21 | 2011-04-20 | 中兴通讯股份有限公司 | Method and system for releasing semi-persistent scheduling (SPS) service resources |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107211437A (en) * | 2015-02-17 | 2017-09-26 | 诺基亚通信公司 | The method discharged for resource |
| CN107211437B (en) * | 2015-02-17 | 2020-06-02 | 维沃移动通信有限公司 | Method for resource release |
| CN106941726A (en) * | 2016-01-04 | 2017-07-11 | 中国移动通信集团公司 | A kind of information acquisition method and equipment |
| GB2579792A (en) * | 2018-12-13 | 2020-07-08 | Tcl Communication Ltd | Management of pre-allocated resources |
| GB2579792B (en) * | 2018-12-13 | 2021-01-20 | Tcl Communication Ltd | Management of pre-allocated resources |
| CN113261359A (en) * | 2018-12-13 | 2021-08-13 | 捷开通讯(深圳)有限公司 | Management of pre-allocated resources |
| CN113261359B (en) * | 2018-12-13 | 2023-05-23 | 捷开通讯(深圳)有限公司 | Management of pre-allocated resources |
| CN113453235A (en) * | 2021-06-09 | 2021-09-28 | 中国联合网络通信集团有限公司 | Method and device for allocating wireless resources |
| CN113453235B (en) * | 2021-06-09 | 2022-11-22 | 中国联合网络通信集团有限公司 | Method and device for allocating wireless resources |
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