CN101179306B - Method and system of transmitting power control command word - Google Patents
Method and system of transmitting power control command word Download PDFInfo
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- CN101179306B CN101179306B CN2006101144725A CN200610114472A CN101179306B CN 101179306 B CN101179306 B CN 101179306B CN 2006101144725 A CN2006101144725 A CN 2006101144725A CN 200610114472 A CN200610114472 A CN 200610114472A CN 101179306 B CN101179306 B CN 101179306B
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Abstract
The invention discloses a transmission method for power control command words, which includes the following steps: configuring power control command blocks and a sending cycle used for transmitting the power control command words of user equipment (UE), then informing the UE of the configuration information and the sending cycle; allocating spaces for the power control command words used for activating the UE in a cell, and adding the power control command words of the every UE into the power control command blocks and sending the power control command blocks according to the sending cycle. The activated UE receives the power control command blocks according to the configuration information and the sending cycle, and captures the power control command words on the corresponding spaces. The invention also discloses a transmission system of the power control command words. The sending cycle can be flexibly setup according to specific condition, therefore, by adopting the method and the system of the invention, not only the transmission cycle of the power control command words can be flexibly setup, but also the identifier of the UE is dispensable.
Description
Technical field
The present invention relates to the technical field of message transmission in the GSM, relate in particular to a kind of transmission method and system of power control command word.
Background technology
Current, global radio communication is just demonstrating the trend of mobile, broadband and IPization, and the competition of mobile communications industry is very fierce.Before existing 3G technology did not also have extensive commercialization, some WiMAX access technologies also began to provide the locomotive function of part, through the broadband mobile, attempt to get into mobile communication market, like IEEE 802.16e technology.In order to maintain competitiveness and the leading position in the mobile communications industry, third generation partner program (3GPP) tissue has started Long Term Evolution plan (LTE, Long Term Evolution) to realize 3G technology seamlessly transitting to B3G and 4G.The target of 3GPP LTE plan is: higher data rate, lower time delay, improved power system capacity and coverage and lower cost.But up to now, 3GPP LTE does not stipulate the transmission method of power control commands word as yet.
Because some transmission channel in LTE like the upstream data channel, has adopted AMC and HARQ technology, thereby the delay requirement and the required precision of power control all reduced greatly.In this case, only need take low-frequency Poewr control method just passable, thereby can be provided with the cycle of power control longer.
For said channel; Like the upstream data channel; If be employed in subscriber equipment (UE; User Equipment) the method transmission power control command word of following reservation corresponding bits in channel, control signaling channel or the corresponding downstream shared control channel of correspondence, the cycle of then controlling the UE uplink transmission power is depended on the transmission cycle of the descending shared control signal channel of following channel, control signaling channel or correspondence.
The transmission cycle of these several kinds of channels is all shorter usually, sends and all compares frequently, thereby cause transmission power control command word more continually, produces certain waste.
If use the corresponding channel of UE to transmit, need provide the corresponding identifier of UE, equally also can bring certain overhead.
Summary of the invention
In view of this, the technical problem that the present invention solves provides a kind of transmission method and system of power control command word, not only the transmission cycle of power control command word can be set neatly, and not need the identifier of UE.
For this reason, technical scheme provided by the invention is following:
A kind of transmission method of power control command word comprises:
Configuration is used for the power control commands piece and the transmission cycle of the power control command word of transmission user equipment UE, and with configuration information and transmission cycle notice UE;
Be the power control command word distribution locations of activation UE in the sub-district, and the power control command word that each activates UE added into power control commands piece, send the power control commands piece by the transmission cycle by corresponding position;
Said activation UE receives the power control commands piece by said configuration information and transmission cycle, and obtains power control command word in the relevant position.
Wherein, by following arrangements of steps power control commands piece:
Position number in the power control commands piece is set, sets up unique call number, set up the call number set, call number is kept in this call number set for each position;
Needed physical resource of power control commands piece and employed code modulation mode are sent in configuration.
Wherein, by following step the position number in the power control commands piece is set:
Add up the par that activates UE in the said sub-district, the position number in the power control commands piece is set to N times of this par, and N is the number greater than 1.
Wherein, by following step the position number in the power control commands piece is set:
The maximum quantity of the activation UE that position number in the power control commands piece is set to support said sub-district.
Wherein, be to activate the power control command word distribution locations of UE in the sub-district by following step:
Distribute a call number for each activates UE, with the call number of distributing deletion from the call number set, it is the call number of its distribution that notice activates UE.
Wherein, by following step the power control command word that each activates UE is added into power control commands piece:
By distributing to the call number that respectively activates UE, each power control command word that activates UE is added the into relevant position of power control commands piece.
Wherein, activate UE and obtain power control command word: activate UE and obtain power control command word in the relevant position of power control commands piece by its call number by following step.
Wherein, further comprise:
When activation UE transfers non-activation to, regain position into its distribution, will preserve into call number set again for the call number of its distribution, stop to its transmission power control commands word.
Wherein, further comprise:
When the quantity that activates UE in the sub-district during more than the position number in the said power control commands piece, to sending the indication information that presets for the UE of its distribution locations;
The UE that receives this indication information will not adjust uplink transmission power.
Based on said method, the present invention also provides a kind of transmission system of power control command word, comprises base station and UE, and wherein, said base station comprises:
Dispensing unit, the power control commands piece and the transmission cycle that are used to dispose the transmission power control command word are with configuration information and transmission cycle notice UE;
Allocation units are used to the power control command word distribution locations that activates UE in the sub-district;
Adding device is used for by corresponding position the power control command word that each activates UE being added into power control commands piece;
Transmitting element is used for sending the power control commands piece by the transmission cycle;
Said UE is used for receiving the power control commands piece by said configuration information and transmission cycle, and obtains power control command word in the relevant position.
Wherein, said dispensing unit comprises:
The position is provided with the unit, is used for being provided with the position number of power control commands piece;
Call number is set up the unit, is used to each position and sets up unique call number, sets up the call number set, and call number is kept in this call number set;
Resource configuration unit is used for configuration and sends needed physical resource of power control commands piece and employed code modulation mode.
Wherein, add up in the said sub-district par that activates UE after, N that position number in the unit power control commands piece is set to this par is set doubly through said position, N is the number greater than 1.
The maximum quantity of the activation UE that position number in the unit power control commands piece is set to support said sub-district wherein, is set through said position.
Wherein, said allocation units comprise:
The call number allocation units are used to each and activate call number of UE distribution, with the call number of distributing deletion from the call number set;
Notification unit is used to notify the call number of activation UE for its distribution.
Wherein, said adding device adds the into relevant position of power control commands piece by distributing to the call number that respectively activates UE with each power control command word that activates UE.
Wherein, said base station also is used for when activation UE transfers non-activation to, regaining the position into its distribution, will preserve into call number set again for the call number of its distribution, stops to its transmission power control commands word.
Wherein, the quantity that said base station also is used for activating UE when the sub-district is during more than the quantity of said position, to sending the indication information that presets for the UE of its distribution locations; UE receives this indication information, will not adjust uplink transmission power.
In the present invention, the power control command word that respectively activates UE in the sub-district is encapsulated in the power control commands piece, sends to by the transmission cycle of presetting and respectively activate UE in the sub-district.Activation UE in the sub-district receives the power control commands piece by the said cycle, and the relevant position in the power control commands piece obtains power control command word.Can find out,, therefore, not only the transmission cycle of power control command word can be set neatly, and not need the identifier of UE through method and system of the present invention because the transmission cycle can be provided with as the case may be neatly.
Description of drawings
Fig. 1 is the flow chart of method provided by the invention;
Fig. 2 is the sketch map of system provided by the invention.
Embodiment
Core concept of the present invention is: in the LTE system; Network side is with a plurality of subscriber equipment (UE; User Equipment) data block formed in power control commands word; Be called power control commands piece (TPC_block), send to said a plurality of UE by the cycle that pre-sets, said a plurality of UE will carry out the adjustment control of ascending power by the said cycle.
Wherein, the number of the TPC_block power control commands that can comprise is determined by position number (TPC_block_length).In TPC_block, each position may be used to carry a power control command word, and also all there is the call number (TPC_index) of a correspondence each position.Each position among the TPC_block possibly comprise a plurality of bit, and this depends on the requirement of the power control command word of needs expression.
The base station through TPC_block when a plurality of UE transmission power control commands word; Each UE need obtain one's own power control command word in corresponding position in TPC_block; So the base station should be in advance for each UE distributes corresponding position, and the index information of this position is notified to each UE, thereby make each UE in TPC_block, find corresponding position by index information; Obtain one's own power control command word, and adjust the uplink transmission power of oneself by this command word.
Because on some transmission channel in the LTE system; Like the upstream data channel; Adopt AMC and HARQ technology, therefore the delay requirement to the power control of UE requires all reduction greatly with accuracy, can be with said cycle setting bigger; Thereby reduce the frequency of UE adjustment control ascending power, system overhead conserved.
Below in conjunction with specific embodiment method provided by the present invention is further specified, Fig. 1 is the flow chart of the inventive method.
In step 101, when setting up in the sub-district, the capacity configuration TPC_block according to the sub-district is provided with TPC_block_length.
Wherein, can confirm TPC_block_length through two kinds of methods.
First method is: add up the par that is in the UE of state of activation in this sub-district; TPC_block_length is set to N times of this par, and N is the number greater than 1, and can guarantee that TPC_block_length is an integer.The value of N can be confirmed according to the objective requirements such as ruuning situation of resource operating position and base station.
Second method is: the maximum quantity of the activation UE that this sub-district can be supported is set to TPC_block_length.
In step 102, to set up the call number of each position, and set up call number pond (TPC_index_pool), i.e. the set of call number is kept at TPC_index_pool with all call numbers.
In step 103, the transmission cycle of parameter such as the employed physical resource of TPC_block, code modulating method and TPC_block of will sending through broadcasting is notified the UE in this sub-district.
Wherein, the transmission cycle of TPC_block can be in agreement or BCH specify.
In step 104,, the call number that has been assigned with is deleted from TPC_index_pool, and the call number of distributing is sent to corresponding UE through control information for call number of UE distribution of each activation in the sub-district.
In step 105, for the UE of each activation in this sub-district produces corresponding power control command word.
In step 106, add the power control command word of each UE among the TPC_block corresponding position, use physical resource and the code modulating method described in the step 103, the transmission cycle described in 103 is sent TPC_block set by step.
In step 107; The UE that activates in this sub-district uses physical resource and the code modulating method described in the step 103; The transmission cycle described in 103 receives TPC_block set by step, and obtains one's own power control command word according to the call number of distributing in the step 104 corresponding position in TPC_block.
In step 108, the UE that activates in this sub-district is according to the uplink transmission power of power control command word adjustment oneself.
Said method specifies the UE transmission power control command word how in the sub-district, to activate.If the UE in the sub-district transfers unactivated state to from state of activation, i.e. UE deexcitation, then the present invention further comprises:
The call number of the UE that distributes to deexcitation relay get back to TPC_index_pool, thereby can this call number be distributed to the UE of other activation.
If the quantity of the activation UE in the sub-district during greater than TPC_block_length, then can't all be distributed a call number for the UE of each activation.In this case, can be selectively be the UE allocation index that activates number.
For being the activation UE of its allocation index number, also can be that this UE distributes a special indication information, expression will not carried out uplink power control to this UE.After said UE receives this indication information, will not adjust uplink transmission power.
Below, be that example is done more specifically explanation with activation UE transmission power control command word in base station and the sub-district.
Suppose that sub-district A is when setting up; It supports that the maximum number of activation UE is 10000; Then the position number (TPC_block_length) with TPC_block is set to TPC_block_length=10000; And set up corresponding location index pond (TPC_index_pool), and having 10000 location indexs number (TPC_index) among this TPC_index_pool, the scope of TPC_index is 1～10000.
After TPC_block_length is provided with completion; The base station can be through broadcasting; With the UE that sends in the relevant parameter notifying cell A such as the employed physical resource of TPC_block, code modulating method, wherein, the transmission cycle of TPC_block can specify in agreement; Or in BCH, specify, the transmission cycle of supposing TPC_block here is 40ms.
When the UE1 among the A of sub-district activates; The base station will know that UE1 activates; And from TPC_index_pool, select a TPC_index to distribute to UE1, suppose TPC_index=28, then the base station will be from TPC_index_pool be that 28 TPC_index deletes with call number.The base station is notified UE1 through the control signaling with TPC_index=28, and UE1 will obtain uplink power control information according to the location index of base station assigns numbers 28 on No. 28 position.
After the base station generates the power control commands word of UE1, this command word is put into No. 28 position of TPC_block, and be the cycle, send TPC_block with 40ms.Suppose that the transmission cycle is 40ms, and the cycle of agreement regulation subframe is 1ms, then TPC_block is only sent in the base station when subframe numbers is 40 integral multiple, and at other constantly, the pairing physical resource of TPC_block uses for other channels.
UE1 can know relevant parameters such as the employed physical resource of base station transmission TPC_block, code modulating method through broadcast, and sends cycle 40ms.UE1 will receive the TPC_block that send the base station by cycle 40ms, and on No. 28 position of TPC_block, obtain uplink power control information by according to relevant parameters such as said physical resource, code modulating methods, according to this information adjustment uplink transmission power.
When the UE1 deexcitation, the UE1 deexcitation will be known in the base station, and the TPC_index of UE1 is distributed in withdrawal, promptly No. 28, this TPC_index relay get back to TPC_index_pool, so that this TPC_index distributed to the UE of other activation.
If when UE1 activates, though knowing UE1, the base station activates, there has not been this moment TPC_index can supply to distribute among the TPC_index_pool, then special indication information will be distributed for UE1 in the base station.After UE1 receives this indication information that sends the base station, with the adjustment of not carrying out uplink transmission power.
Based on said method, the present invention also provides a kind of transmission system of power control command word, and Fig. 2 is the sketch map of this system, and this system comprises base station and UE, and wherein, said base station comprises dispensing unit 21, allocation units 22, adding device 23 and transmitting element 24.
When the sub-district is set up,, and configuration information and transmission cycle passed through broadcast announcement UE through power control commands piece and the transmission cycle of dispensing unit 21 configuration transmission power control command words.The base station utilizes allocation units 22, can be for activating the power control command word distribution locations of UE in the sub-district.The base station is after the UE for each activation in the sub-district produces corresponding power control command word, with by corresponding position the power control command word of each UE being added into power control commands piece through adding device 23.Then, transmitting element 24 sends to the UE that each activates by the transmission cycle with said power control commands piece.
Said UE is used for receiving the power control commands piece by said configuration information and transmission cycle, and obtains power control command word in the relevant position.
Wherein, dispensing unit 21 comprises that the position is provided with unit 211, call number is set up unit 212 and resource configuration unit 213.
When the sub-district is set up; Through the position unit 211 is set the position number in the power control commands piece is set; Utilize call number to set up unit 212 and set up unique call number for each position; Set up the call number set, call number is kept in this call number set, and send needed physical resource of power control commands piece and employed code modulation mode through resource configuration unit 213 configurations.
Through the position mode that unit 211 is provided with the position number is set and has two kinds; A kind of is to add up the par that activates UE in the said sub-district in advance; N that position number in the unit 211 power control commands pieces is set to this par is set doubly through the position then, N is the number greater than 1; Another kind is the maximum quantity that the activation UE that position number in the unit 211 power control commands pieces is set to support said sub-district is set through the position.
Wherein, allocation units 22 comprise call number allocation units 221 and notification unit 222.
Utilize call number allocation units 221 to distribute a call number, with the call number of distributing deletion from the call number set for each UE; Then, be the call number of its distribution through notification unit 222 notice UE.
Wherein, adding device 23 is distributed to the call number of each UE by call number allocation units 221, and the power control command word of each UE is added the into relevant position of power control commands piece.
When activation UE transfers non-activation to, the position into its distribution will be regained in said base station, will preserve into call number set again for the call number of its distribution, stop to its transmission power control commands word.
When the quantity that activates UE in the sub-district during more than the quantity of said position, said base station can be UE allocation index number selectively.
The base station also can be to sending the indication information that presets for the UE of its distribution locations; UE receives this indication information, will not adjust uplink transmission power.
Claims (17)
1. the transmission method of a power control command word is characterized in that, comprising:
Configuration is used for the power control commands piece and the transmission cycle of the power control command word of transmission user equipment UE, and with configuration information and transmission cycle notice UE;
Be the power control command word distribution locations of activation UE in the sub-district, and the power control command word that each activates UE added into power control commands piece, send the power control commands piece by the transmission cycle by corresponding position;
Said activation UE receives the power control commands piece by said configuration information and transmission cycle, and obtains power control command word in the relevant position.
2. method according to claim 1 is characterized in that, presses following arrangements of steps power control commands piece:
Position number in the power control commands piece is set, sets up unique call number, set up the call number set, call number is kept in this call number set for each position;
Needed physical resource of power control commands piece and employed code modulation mode are sent in configuration.
3. method according to claim 2 is characterized in that, by following step the position number in the power control commands piece is set:
Add up the par that activates UE in the said sub-district, the position number in the power control commands piece is set to N times of this par, and N is the number greater than 1.
4. method according to claim 2 is characterized in that, by following step the position number in the power control commands piece is set:
The maximum quantity of the activation UE that position number in the power control commands piece is set to support said sub-district.
5. method according to claim 2 is characterized in that, is to activate the power control command word distribution locations of UE in the sub-district by following step:
Distribute a call number for each activates UE, with the call number of distributing deletion from the call number set, it is the call number of its distribution that notice activates UE.
6. method according to claim 5 is characterized in that, by following step the power control command word that each activates UE is added into power control commands piece:
By distributing to the call number that respectively activates UE, each power control command word that activates UE is added the into relevant position of power control commands piece.
7. method according to claim 6 is characterized in that, activates UE and obtains power control command word by following step: activate UE and obtain power control command word by its call number in the relevant position of power control commands piece.
8. according to any described method of claim 5 to 7, it is characterized in that, further comprise:
When activation UE transfers non-activation to, regain position into its distribution, will preserve into call number set again for the call number of its distribution, stop to its transmission power control commands word.
9. according to any described method of claim 1 to 7, it is characterized in that, further comprise:
When the quantity that activates UE in the sub-district during more than the position number in the said power control commands piece, to sending the indication information that presets for the UE of its distribution locations;
The UE that receives this indication information will not adjust uplink transmission power.
10. the transmission system of a power control command word comprises base station and UE, it is characterized in that,
Said base station comprises:
Dispensing unit, the power control commands piece and the transmission cycle that are used to dispose the transmission power control command word are with configuration information and transmission cycle notice UE;
Allocation units are used to the power control command word distribution locations that activates UE in the sub-district;
Adding device is used for by corresponding position the power control command word that each activates UE being added into power control commands piece;
Transmitting element is used for sending the power control commands piece by the transmission cycle;
Said UE is used for receiving the power control commands piece by said configuration information and transmission cycle, and obtains power control command word in the relevant position.
11. system according to claim 10 is characterized in that, said dispensing unit comprises:
The position is provided with the unit, is used for being provided with the position number of power control commands piece;
Call number is set up the unit, is used to each position and sets up unique call number, sets up the call number set, and call number is kept in this call number set;
Resource configuration unit is used for configuration and sends needed physical resource of power control commands piece and employed code modulation mode.
12. system according to claim 11 is characterized in that, add up in the said sub-district par that activates UE after, N that position number in the unit power control commands piece is set to this par is set doubly through said position, N is the number greater than 1.
13. system according to claim 11 is characterized in that, the maximum quantity of the activation UE that position number in the unit power control commands piece is set to support said sub-district is set through said position.
14. system according to claim 11 is characterized in that, said allocation units comprise:
The call number allocation units are used to each and activate call number of UE distribution, with the call number of distributing deletion from the call number set;
Notification unit is used to notify the call number of activation UE for its distribution.
15. system according to claim 14 is characterized in that, said adding device adds the into relevant position of power control commands piece by distributing to the call number that respectively activates UE with each power control command word that activates UE.
16. according to claim 14 or 15 described systems; It is characterized in that said base station also is used for when activation UE transfers non-activation to, regaining the position into its distribution; To preserve into call number set again for the call number of its distribution, stop to its transmission power control commands word.
17., it is characterized in that the quantity that said base station also is used for activating UE when the sub-district is during more than the quantity of said position, to sending the indication information that presets for the UE of its distribution locations according to any described system of claim 10 to 15; UE receives this indication information, will not adjust uplink transmission power.
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| CN2006101144725A CN101179306B (en) | 2006-11-10 | 2006-11-10 | Method and system of transmitting power control command word |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20100100592A (en) | 2009-03-06 | 2010-09-15 | 삼성전자주식회사 | Method and apparatus for power control in wireless communication system |
| CN101702823B (en) * | 2009-11-04 | 2015-05-13 | 中兴通讯股份有限公司 | Method for sending emissive power control command |
| KR20110108226A (en) * | 2010-03-26 | 2011-10-05 | 삼성전자주식회사 | Device and method to activate and deactivate carriers in wireless communication system |
| CN103857041B (en) * | 2012-11-30 | 2017-12-05 | 华为技术有限公司 | The method of receive information, method, base station and the user equipment for sending information |
| CN106304298A (en) * | 2015-05-14 | 2017-01-04 | 中兴通讯股份有限公司 | A kind of unauthorized resource ascending power control method, terminal, base station and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734963A (en) * | 2004-08-12 | 2006-02-15 | 华为技术有限公司 | Inner ring power frequency control method |
| CN1744453A (en) * | 2004-08-31 | 2006-03-08 | 西门子（中国）有限公司 | Adaptive up closed ring power control method in CDMA system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734963A (en) * | 2004-08-12 | 2006-02-15 | 华为技术有限公司 | Inner ring power frequency control method |
| CN1744453A (en) * | 2004-08-31 | 2006-03-08 | 西门子（中国）有限公司 | Adaptive up closed ring power control method in CDMA system |
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