CN105228137B - A kind of transmission method of authorization message - Google Patents
A kind of transmission method of authorization message Download PDFInfo
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- CN105228137B CN105228137B CN201410224803.5A CN201410224803A CN105228137B CN 105228137 B CN105228137 B CN 105228137B CN 201410224803 A CN201410224803 A CN 201410224803A CN 105228137 B CN105228137 B CN 105228137B
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- mandate
- segmentation
- authorization message
- terminal
- transmission
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Abstract
This application discloses a kind of transmission methods of authorization message, and authorization message is segmented, and obtain multiple mandate segmentations, each mandate segmentation are handed down to terminal respectively in such a way that multiframe continuously transmits, while being transmitted control using HARQ retransmission mechanism.Using the present invention, the larger authorization message of information content can be issued quickly, and is avoided that the reliability loss that multiframe authorized transmissions are brought, and be suitable for narrow band width wireless communication systems.
Description
Technical field
The present invention relates to wireless communication techniques, more particularly to a kind of transmission method of authorization message.
Background technology
The design of cordless communication network is limited to available band situation, is for distributed continuous and a wide range of bandwidth
System, all kinds of control channels of design and Traffic Channel that can be more calm.But it is discrete for available band and each is discrete
How the relatively narrow band resource of available band reasonably designs all kinds of channels, and how adequately to utilize discrete narrow band resource
It can be more difficult than broadband system.Furthermore, it is contemplated that the considerations of cost problem of terminal and system design in actual product,
Only support to carry out the monitoring and reception of control channel, especially authorization channel there may be great amount of terminals in narrow bandwidth range.For
Control channel needs to be weighed between efficiency of transmission and transmission quality to ensure high reliability, it is especially this from
The system of narrowband is dissipated, the bit number of the single transmission of single frequency point is less.If that needing once to transmit more mandate letter
Breath is just likely to be limited to the bit number that the authorization channel of single transmission is carried by and can not execute.And for discrete narrow band
Resource allocation for, due to the discretization of resource, the instruction of resource more expends bit number than broadband system.So needing one
Kind can extend authorization channel can transmitted bit number authorization.
Existing authorization method is all to be wirelessly transferred in chronomere to issue one at one, and carrying information content is limited, nothing
The mandate that method meets large information capacity issues demand.And for broadband system, it is possible to accomplish to be wirelessly transferred chronomere at one
It is interior, multiple mandates are issued simultaneously in big frequency range, but for narrowband systems, it is clear that it is difficult to accomplish.
Not yet propose a kind of transmission method of the authorization message suitable for narrow band width wireless communication systems at present.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of transmission method of authorization message, this method is suitable for
Narrow band width wireless communication systems.
In order to achieve the above object, technical solution proposed by the present invention is：
A kind of transmission method of authorization message, including：
Base station is according to the bit number M carried required for the authorization message for currently needing to senddci, current grant single transmission
The effective information bit number W being carried by is calculated and is sent the mandate frame number N that the authorization message needs continuously transmit；
The bit carried required for the authorization message is divided into N sections by the base station, for every section of bit, by its with it is corresponding
Cyclic check CRC check information and authorize segment control unit to combine to obtain one to authorize segmentation, and utilize one
Subframe will authorize segmentation to be sent to terminal, and whether the mandate segment control unit includes to authorize fragment sequence number and be that last is awarded
Weigh the instruction information of segmentation；
Segmentation is authorized for each of receiving, the terminal is carried out according to the CRC check information that mandate segmentation carries
Parsing, and the HARQ feedback information that the mandate is segmented is fed back into the base station；
When the HARQ feedback information that the base station receives mandate segmentation is nack message, the base station is by the mandate
Segmented retransmission gives the terminal；
When the terminal correctly parses the N sections of bits of the authorization message, according to awarding for every section of bit of carrying
The mandate segment control unit in power segmentation, the authorization message is obtained to the N sections of bit recombination.
In conclusion the transmission method of authorization message proposed by the present invention, authorization message is segmented, multiple award is obtained
Power segmentation, and it is handed down to terminal respectively in such a way that multiframe continuously transmits.It is segmented simultaneously for each mandate and uses independent HARQ
Retransmission mechanism.Therefore, the larger mandate of information content can be issued quickly, and is avoided that multiframe authorized transmissions are brought reliable
Property loss, be suitable for narrow band width wireless communication systems.
Description of the drawings
Fig. 1 is the flow diagram of the embodiment of the present invention one.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, right below in conjunction with the accompanying drawings and the specific embodiments
The present invention is described in further detail.
Core of the invention thought is：Authorization message is segmented, multiple mandate segmentations is obtained, is continuously transmitted with multiframe
Mode be handed down to terminal, simultaneously for each mandate segmentation use hybrid automatic repeat-request (HARQ) retransmission mechanism.In this way,
The larger mandate of information content can be issued quickly, and is avoided that the reliability loss that multiframe authorized transmissions are brought.
Fig. 1 is the flow diagram of the embodiment of the present invention one, as shown in Figure 1, the embodiment includes mainly：
Step 101, base station are according to the bit number M carried required for the authorization message for currently needing to senddci, current grant
The effective information bit number W that single transmission is carried by is calculated and is sent the mandate frame number that the authorization message needs continuously transmit
N。
It specifically, can be according to N=Mdci/ W obtains the N.
In practical applications, the W is that the bit number M that current grant single transmission is carried by takes with needed for single transmission
The difference of the control information bit of band.
Wherein, the control information will include at least：The required cyclic check CRC bits of single transmission mandate authorize
Fragment sequence number and whether be last authorize segmentation instruction information.
The bit carried required for the authorization message is divided into N sections by step 102, the base station, will for every section of bit
It combines to obtain a mandate segmentation with corresponding cyclic check (CRC) check information and mandate segment control unit,
And segment transmissions will be authorized to terminal using subframe, comprising authorizing fragment sequence number and be in the mandates segment control unit
The no instruction information for being last and authorizing segmentation.
Step 103 is segmented, the CRC check that the terminal is carried according to mandate segmentation for each of receiving to authorize
Information is parsed, and the HARQ feedback information that the mandate is segmented is sent to the base station.
Here, it is segmented for each of receiving to authorize, terminal needs are individually parsed, and individually progress HARQ is anti-
Feedback, in this way, can be retransmitted just for the segmentation that parsing mistake occurs.
Step 104, when the base station receive a mandate segmentation HARQ feedback information be nack message when, the base station
Give the mandate segmented retransmission to the terminal.
In practical applications, when feedback channel detection mistake occurs, for example ACK information is detected and is believed at NACK by base station
Breath, base station can be further according to the repeating transmission of nack message progress corresponding segments, in this way, terminal will be correct to one again at this time
The mandate segmentation of reception is received.Preferably, can be in a manner of further taking and abandon the mandate segmentation of newest reception, to solve
It is certainly above-mentioned the problem of repeating to receive, specific as follows：
If the mandate segmentation that the terminal is currently received is segmented segmentation sequence having the same with the mandate having received
Number, and the two carries identical new and old mandate indicating bit, then it is assumed that and it is to repeat to receive, at this time, it may be necessary to be awarded currently received
Power segmentation abandons.
Preferably, number of retransmissions thresholding, i.e. maximum retransmission can be arranged, enter to avoid due to bad channel quality
Retransmit endless loop.Specifically, when the base station or the terminal monitoring reach pre- to any number of retransmissions for authorizing segmentation
If maximum retransmission when, triggering stop authorize segmentation re-transmission, and delete be properly received in the terminal belong to same
Other of one authorization message authorize segmentation.
Step 105, when the terminal can correctly parse the N sections of bits of the authorization message, according to carrying
The mandate segment control unit in the mandate segmentation of every section of bit, the authorization message is obtained to the N sections of bit recombination.
In practical applications, successful probability is retransmitted in order to further under conditions of channel quality is poor, improve, but same
When in view of normal HARQ retransmit time delay, and authorize expense, preferably, can also further carry out HARQ re-transmissions
When introduce redundant retransmission technology, i.e., every time retransmit when carry out multiple redundant transmission, with improve this re-transmission the probability of success, preferably
, following methods may be used and realize this purpose：
When a mandate segmentation carries out n-th re-transmission, the mandate is segmented using maximum superfluous in this re-transmission
Remaining the number of transmissions is the redundant transmission of y+ (n-1) × z, wherein y is the radix of preset redundant retransmission, and z is preset redundancy time
Number increases step-length.
Here, z leads to the increased step parameter of redundancy number for number of retransmissions increase.
The y and z is nonnegative integer, and occurrence can be according to actual needs arranged by those skilled in the art.
Using the above method, each re-transmission for authorizing segmentation for one will all be realized by the way of redundant transmission, and
Maximum redundancy the number of transmissions is y+ (n-1) × z, is awarded in this way, can dynamically be adjusted according to number of retransmissions when each HARQ is retransmitted
The maximum redundancy the number of transmissions for weighing segmentation, with the increase of the number of re-transmission, the maximum redundancy the number of transmissions retransmitted every time also will
Increase, in this way, the probability of success of re-transmission can be further increased.
Simplest two special cases are exactly：A) z=0, is equivalent to each HARQ and retransmits fixed y times and continuously repeat transmission.
B) y=1, z=1 are equivalent to the 1st time and retransmit transmission 1 time, and the 2nd re-transmission continuously repeats transmission 2 times, and the 3rd re-transmission continuously repeats
Transmission 3 times ...
In order to avoid the waste of transfer resource, for belonging to each redundant transmission once retransmitted, the terminal is anti-
Corresponding ACK/NACK information is presented to the base station, when the base station receives an ACK information, then stops corresponding authorizing and divides
The re-transmission of section.
Here, it is transmitted with a HARQ each repeated and redundants retransmitted for belonging to, terminal feeds back corresponding ACK/
Nack message retransmits successfully in this way, base station can be known according to ACK information in time when terminal has correctly received mandate segmentation,
So as to stop the re-transmission being segmented to the mandate in time.
In practical applications, due to having certain timing intervals, multiple multiple HARQ for authorizing segmentation between HARQ re-transmissions
Re-transmission must undergo one considerable time, it is possible to occur：In this period the also incomplete end of transmission of old mandate and
Come into force, but radio resource allocation situation has changed, have the ability completely as base station to terminal redistribute one piece it is more excellent
Transfer resource.At this point, base station just needs to stop old mandate as soon as possible, new mandate is used in combination to replace.It can be awarded in this way old
Power issues midway, is stopped with prestissimo and new mandate is used to be covered, ensure that the quick and flexibility of resource allocation.
But cannot use and simply issue new mandate, because new authorize it could also be possible that segment transmissions, some segmentation newly authorized is very
Without some segmentation of the successful old mandate of reception, mistake recombinate before being easy to be mistakenly considered by terminal.
For the situation, the new and old instruction information of mandate for authorizing segmentation to carry can be utilized to indicate current authorization message pair
Each mandate answered is segmented into new mandate section.Following methods specifically may be used and realize this purpose：
The mandate segmentation, which carries, in a step 102 authorizes new and old instruction information；When the authorization message is new mandate
When information, the corresponding all new and old instruction information of the mandate authorized in segmentation of the authorization message are previous authorization message pair
The inverted value for the new and old instruction information of mandate answered.For example previous authorization message is corresponding that authorize new and old instruction information be 0, then newly
It is 1, previous is 1, then new is 0.
In step 103 when the terminal receives a mandate segmentation and can correctly parse, the terminal will
New and old mandate in the previous mandate segmentation for the new and old mandate instruction information and self record that mandate segmentation carries indicates information
It is compared, if it is different, then deleting the previous all mandates segmentation for authorizing and being segmented corresponding authorization message.
Preferably, described authorize new and old instruction information that can be carried by the mandate segment control unit.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of transmission method of authorization message, which is characterized in that including：
Base station is according to the bit number M carried required for the authorization message for currently needing to senddci, current grant single transmission institute energy
The effective information bit number W of carrying is calculated and is sent the mandate frame number N that the authorization message needs continuously transmit；
The bit carried required for the authorization message is divided into N sections by the base station, and for every section of bit, it is followed with corresponding
Ring check (CRC) check information and mandate segment control unit are combined to obtain a mandate segmentation, and utilize a subframe
Segmentation will be authorized to be sent to terminal, whether the mandate segment control unit includes to authorize fragment sequence number and be last mandate point
The instruction information of section；
Segmentation is authorized for each of receiving, the terminal is parsed according to the CRC check information that mandate segmentation carries,
And the hybrid automatic repeat-request HARQ feedback information that the mandate is segmented is sent to the base station；
When the HARQ feedback information that the base station receives mandate segmentation is nack message, which is segmented by the base station
It retransmits to the terminal；
When the terminal correctly parses the N sections of bits of the authorization message, according to the mandate point for carrying every section of bit
The mandate segment control unit in section, the authorization message is obtained to the N sections of bit recombination.
2. according to the method described in claim 1, it is characterized in that, according to N=Mdci/ W obtains the N.
3. according to the method described in claim 1, it is characterized in that, the method further includes：
The mandate segment control unit also includes to authorize new and old instruction information；
If the mandate segmentation that the terminal is currently received is segmented fragment sequence number having the same with the mandate having received, and
And the two carries the identical new and old instruction information of mandate, then is segmented currently received mandate and abandons.
4. according to the method described in claim 1, it is characterized in that, the method further includes：
When the number of retransmissions of the base station or the terminal monitoring to any mandate segmentation reaches preset maximum re-transmission time
When number, triggering stops the re-transmission of mandate segmentation, and deletes the same authorization message of belonging to being properly received in the terminal
Other authorize segmentation.
5. according to the method described in claim 1, it is characterized in that, the method further includes：
When a mandate segmentation carries out n-th re-transmission, the mandate is segmented in this re-transmission and carries out maximum redundancy biography
Defeated number is the redundant transmission of y+ (n-1) × z, wherein y is the radix of preset redundant retransmission, and z increases for preset redundancy number
Add step-length.
6. according to the method described in claim 5, it is characterized in that, the method further includes：
For belonging to each redundant transmission once retransmitted, the terminal feeds back corresponding ACK/NACK information to the base
It stands, when the base station receives an ACK information, then stops the corresponding re-transmission for authorizing segmentation.
7. according to the method described in claim 1, it is characterized in that, the method further includes：
The mandate segment control unit also includes to authorize new and old instruction information；When the authorization message is new authorization message
When, the corresponding all new and old instruction information of the mandate authorized in segmentation of the authorization message are that previous authorization message is corresponding
Authorize the inverted value of new and old instruction information；
When the terminal receives a mandate segmentation and can correctly parse, the terminal carries mandate segmentation
New and old instruction information is authorized to be compared with the new and old instruction information of mandate in the previous mandate of self record segmentation, if not
Together, then the previous all mandates segmentation for authorizing and being segmented corresponding authorization message is deleted.
8. the method according to the description of claim 7 is characterized in that described authorize new and old instruction information to be segmented control by the mandate
Unit processed carries.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410224803.5A CN105228137B (en) | 2014-05-26 | 2014-05-26 | A kind of transmission method of authorization message |
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| CN201410224803.5A CN105228137B (en) | 2014-05-26 | 2014-05-26 | A kind of transmission method of authorization message |
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| CN105228137A CN105228137A (en) | 2016-01-06 |
| CN105228137B true CN105228137B (en) | 2018-10-30 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109361493B (en) * | 2018-10-29 | 2021-08-20 | 南京中感微电子有限公司 | Bluetooth receiving method, Bluetooth receiver and Bluetooth device |
| CN109654671B (en) * | 2018-12-29 | 2021-01-08 | 北京合创三众能源科技股份有限公司 | Air conditioning system data transmission method, controller and air conditioning system |
| CN110300456B (en) * | 2019-05-06 | 2023-05-26 | 国网浙江省电力有限公司嘉兴供电公司 | Superposition authorization method for semi-static transmission of narrow-band system |
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| CN101399643A (en) * | 2007-09-29 | 2009-04-01 | 上海贝尔阿尔卡特股份有限公司 | Control method and device for confirming mode data transmission |
| CN101436922A (en) * | 2008-12-17 | 2009-05-20 | 烽火通信科技股份有限公司 | Method for transmitting massive data based on UDP protocol |
| CN102571572A (en) * | 2011-12-28 | 2012-07-11 | 中国人民解放军国防科学技术大学 | Short message satellite communication-based data transmission method and device |
| CN102790659A (en) * | 2012-07-18 | 2012-11-21 | 福建先创通信有限公司 | Method for transmitting data packet in mobile communication system |
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2014
- 2014-05-26 CN CN201410224803.5A patent/CN105228137B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101399643A (en) * | 2007-09-29 | 2009-04-01 | 上海贝尔阿尔卡特股份有限公司 | Control method and device for confirming mode data transmission |
| CN101436922A (en) * | 2008-12-17 | 2009-05-20 | 烽火通信科技股份有限公司 | Method for transmitting massive data based on UDP protocol |
| CN102571572A (en) * | 2011-12-28 | 2012-07-11 | 中国人民解放军国防科学技术大学 | Short message satellite communication-based data transmission method and device |
| CN102790659A (en) * | 2012-07-18 | 2012-11-21 | 福建先创通信有限公司 | Method for transmitting data packet in mobile communication system |
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