CN101383639B - Uplink power control information transmission method, uplink power control method and device - Google Patents
Uplink power control information transmission method, uplink power control method and device Download PDFInfo
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Abstract
The invention discloses a transmission method of up power control information, which comprises the following steps: frequency resources used for sending the up power control information in a DwPTS is determined; configuration information including resources used for sending the up power control information is informed to a UE in a cell, the frequency resources determined in the DwPTS sends the up power control information. The up power control information is sent in the DwPTS, the frequency resource utilization of the DwPTS is improved, the purpose of the DwPTS is increased, and any influence on the data transmission speed of the conventional time slot does not exist. In addition, the method sending the up power control information in the DwPTS matches with the prior method sending the up power control information, thereby better implementary effect is achieved. The invention also discloses a transmission device of the up power control information, and an up power control method and an up power control device, and the up transmission power can be more accurately controlled by the UE through adopting the method or the device.
Description
Technical field
The present invention relates to the Long Term Evolution of TDD (time division duplex) system, relate in particular to a kind of uplink power control transmission of Information method and apparatus in the Long Term Evolution of TDD system, and corresponding ascending power control method and device.
Background technology
At present, 3GPP (third generation partner program) tissue has set about beginning its existing system standard is carried out long-term evolution.In the middle of numerous physical layer transmission technology, OFDM (OFDM) technology is with its higher availability of frequency spectrum, and lower processing complexity becomes the first-selection in all descending schemes.
Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is to be decomposed into several rate data streams to the data flow of a two-forty on one group of mutually orthogonal subcarrier, to transmit simultaneously.The OFDM technology is because its multicarrier character has performance advantage aspect a lot.
A significant advantage of OFDM technology is exactly data parallel transmissions on a plurality of subcarriers respectively, and the length of the symbol on each subcarrier increases accordingly, and is insensitive to channel delay; Add protection on each symbol at interval through further giving, promptly introduce CP (Cyclic Prefix) under the situation of channel delay, can eliminate ISI (intersymbol interference) fully less than circulating prefix-length.Like this, each subcarrier has all experienced flat fading channel.In addition, the OFDM technology also has advantages such as the ability of availability of frequency spectrum height, anti-narrow band interference and frequency selective fading is stronger.
In the evolution scheme of TDD system, the transmission of data division can be adopted the OFDM mode.Subframe structure in the TDD system evolved scheme is as shown in Figure 1, and the time span of a sub-frame is 5ms (millisecond), be divided into 7 common time slots (TS0～TS6) and three special time slots (and DwPTS, GP, UpPTS).
Wherein DwPTS (descending pilot frequency time slot) only is used for network side transmission P-SCH (primary synchronization channel).Because DwPTS is not used in the transmission data, its unique purposes is that network side sends the P-SCH that is used for down-going synchronous, and P-SCH only takies the fixedly bandwidth of 1.25MHz, and to the system of bandwidth greater than 1.25MHz, remaining running time-frequency resource is wasted.
In addition; In the evolution scheme of present TDD system; When carrying out uplink power control; If UE is assigned with a plurality of PRB (Physical Resource Block) at frequency domain, thinks that then the ascending power parameter of all PRB all is identical, and send each PRB desired power according to said ascending power calculation of parameter UE.But because the influence of various factors, the ascending power parameter of each PRB is not to be consistent, therefore, by present method, will make the transmitting power of UE on different PRB identical, causes the control of ascending power not accurate enough.
Summary of the invention
In view of this, the technical problem that the present invention solves provides a kind of uplink power control transmission of Information method, makes network side send uplink power control information for UE, and can improve the resource utilization of DwPTS.
Another technical problem that the present invention solves provides a kind of uplink power control transmission of Information device.
In addition, the present invention also provides a kind of ascending power control method and uplink transmission power control device, adopts this method or device can make UE control uplink transmission power more accurately.
Technical scheme provided by the invention is following:
A kind of uplink power control transmission of Information method comprises:
Confirm in descending pilot frequency time slot DwPTS, to be used to send the frequency resource of uplink power control information;
To comprise the interior user equipment (UE) of configuration information of resource notifying cell that is used to send uplink power control information, wherein, said uplink power control information comprises each the Physical Resource Block PRB ascending power parameter P separately that distributes to user equipment (UE)
O_i, P
O_iIt is the ascending power parameter of distributing to i Physical Resource Block PRB of user equipment (UE);
Send uplink power control information in the frequency resource of confirming described in the descending pilot frequency time slot DwPTS; After making said user equipment (UE) receive said uplink power control information, obtain the adjusted actual uplink transmitted power of said user equipment (UE) P through calculating
;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the Physical Resource Block PRB of user equipment (UE), P
PRB_iFor user equipment (UE) sends i Physical Resource Block PRB desired power;
P
PRB_i=P
O_i+ α * PL+ Δ, α are the path loss compensating factors of sub-district, and PL is a path loss, and Δ is that the closed loop of sending upward signal is corrected the factor.
Preferably, confirm in descending pilot frequency time slot DwPTS, to send the frequency resource of uplink power control information by pre-configured frequency resource.
Preferably, by pre-configured frequency resource selection strategy, confirm in descending pilot frequency time slot DwPTS, to send the frequency resource of uplink power control information.
Preferably, give all user equipment (UE)s in the sub-district with said configuration information broadcast announcement, or notify each user equipment (UE) respectively with said configuration information through the scheduling controlling channel through system message.
Preferably, in the uplink power control information of sending, carry indication information, indicate the pairing ascending time slot of this uplink power control information.
Preferably, through sending the subframe numbers of uplink power control information, indicate the pairing ascending time slot of this uplink power control information.
Preferably, the uplink power control information of each frequency band is sent at the corresponding frequency band of descending pilot frequency time slot DwPTS;
Wherein, further comprise:
The uplink power control information of the shared frequency band of primary synchronization channel P-SCH is gone up transmission at D-BCCH (dynamic broadcast control channel);
In the uplink power control information of descending pilot frequency time slot DwPTS transmission and the uplink power control information of sending at dynamic broadcast control channel D-BCCH, the transmission cycle of the two is consistent.
A kind of ascending power control method is used for user equipment (UE), comprising:
Receive uplink power control information, learn the ascending power parameter P of i the Physical Resource Block PRB that distributes to this user equipment (UE)
O_i
Calculate
and obtain adjusted actual uplink transmitted power P;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the Physical Resource Block PRB of user equipment (UE), P
PRB_iFor user equipment (UE) sends i Physical Resource Block PRB desired power;
P
PRB_i=P
O_i+ α * PL+ Δ, α are the path loss compensating factors of sub-district, and PL is a path loss, and Δ is that the closed loop of sending upward signal is corrected the factor.
Preferably, receive uplink power control information at descending pilot frequency time slot DwPTS.
Preferably, through the entrained clear and definite indication information of uplink power control information, learn the pairing ascending time slot of this uplink power control information.
Preferably, through receiving the subframe numbers of uplink power control information, learn the pairing ascending time slot of this uplink power control information.
A kind of uplink power control device is used for user equipment (UE), comprising:
Parameter obtains the unit, is used for after user equipment (UE) receives uplink power control information, and the ascending power parameter P of i Physical Resource Block PRB of this user equipment (UE) is distributed in acquisition
O_iWith
Power calculation unit is used for calculating
and obtains adjusted actual uplink transmitted power P;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the PRB of UE, P
PRB_iFor user equipment (UE) sends i PRB desired power;
P
PRB_i=P
O_i+ α * PL+ Δ, α are the path loss compensating factors of sub-district, and PL is a path loss, and Δ is that the closed loop of sending upward signal is corrected the factor, P
O_iIt is the ascending power parameter of distributing to i Physical Resource Block PRB of user equipment (UE).
Can find out; Adopt uplink power control transmission of Information method provided by the invention, send uplink power control information, not only can improve the frequency resource utilance of DwPTS at DwPTS; Also increased the purposes of DwPTS, and the message transmission rate of conventional time slot has also been had no influence.In addition, can also the method for method of sending uplink power control information at DwPTS and existing transmission uplink power control information be used, thereby reach the better implement effect.
In addition, adopt ascending power control method provided by the invention, owing to adopt the ascending power calculation of parameter UE of each PRB to send each PRB desired power respectively, thus can make UE carry out the control of uplink transmission power more accurately.
Description of drawings
Fig. 1 is the subframe structure sketch map in the TDD system evolved scheme;
Fig. 2 is the sketch map that in the Long Term Evolution scheme, in DwPTS, transmits P-SCH;
Fig. 3 is the method flow diagram that sends uplink power control information at DwPTS provided by the invention;
Fig. 4 is a uplink power control transmission of Information schematic representation of apparatus provided by the invention;
Fig. 5 is the sketch map of uplink transmission power control device provided by the invention.
Embodiment
In the evolution scheme of TDD system, the transmission of data division can be adopted the OFDM mode.In order to be implemented in the down-going synchronous under the OFDM mode, introduced descending synchronous signal channel (SCH, Synchronization Channel).SCH comprises P-SCH and S-SCH (auxiliary synchronization channel).The master sync signal that network side sends in each sub-district all is identical, and the auxiliary synchronous signals that sends in each sub-district is different.
Fig. 2 shows in the Long Term Evolution scheme, in DwPTS, only utilizes the limited number of sub-carrier of frequency band central authorities to send P-SCH, and dash area representes to be used to send the subcarrier of P-SCH among the figure.Wherein, said limited number of sub-carrier can be called special frequency resource.When system bandwidth is big, a large amount of residual frequency resources except that special frequency resource will be arranged.
In the Long Term Evolution scheme of TDD system, after UE (subscriber equipment) and network side connect, Node B (base station) will send uplink power control information to UE at descending common time slot.UE will utilize this information that its uplink transmission power is adjusted after receiving the uplink power control information of Node B transmission at descending common time slot.
Can find out through above-mentioned analysis, can utilize the residual frequency resource among the DwPTS to send uplink power control information fully, make network side send uplink power control information, and can improve the resource utilization of DwPTS for UE.
For making those skilled in the art can understand the present invention better, specify below in conjunction with 1 pair of method in DwPTS transmission uplink power control information provided by the invention of embodiment, Fig. 3 is the flow chart of this method.
In step 31, confirm in DwPTS, to be used to send the frequency resource of uplink power control information.
Because it is limited in DwPTS, being used to transmit the special frequency resource of P-SCH, therefore, will there be a large amount of residual frequency resources to be available for sending uplink power control information when system bandwidth greatly the time.Concrete which residual frequency resource that adopts is sent uplink power control information, and mode has multiple.
A kind of mode can be: the pre-configured residual frequency resource that is used to send uplink power control information, when needs send uplink power control information, adopt the residual frequency resource of said configuration to get final product regularly.Adopt the benefit of this mode to be, realize simply the processing complexity when having reduced actual motion.
Another kind of mode can be: pre-configured frequency resource selection strategy, when needs send uplink power control information, will dynamically select to be used to send the residual frequency resource of uplink power control information according to said frequency resource selection strategy.Adopt the benefit of this mode to be, when actual motion, can select to be used to send the residual frequency resource of uplink power control information more neatly according to the operating position of frequency resource.
In step 32, will comprise the interior UE of configuration information of resource notifying cell that is used to send uplink power control information.
Resource described here had both comprised time interval resource, and promptly DwPTS also comprises the frequency resource of confirming in the step 31.
Can give all UE in the sub-district with said configuration information broadcast announcement through system message, for example configuration information is broadcast to all UE in the sub-district through D-BCCH.Also can notify each UE respectively with said configuration information through the scheduling controlling channel.
When needs send uplink power control information, in step 33, send uplink power control information in the frequency resource of confirming described in the DwPTS.
After UE receives said resource allocation information, can learn and send employed time interval resource of uplink power control information and frequency resource.
UE is normal to send up control data or business datum, and waits for the uplink power control information that receives in the corresponding frequencies resource of DwPTS.
Can find out, in terms of existing technologies, send uplink power control information, not only can improve the frequency resource utilance of DwPTS, also increase the purposes of DwPTS, and the message transmission rate of conventional time slot is also had no influence at DwPTS.In addition, can also the method for method of sending uplink power control information at DwPTS and existing transmission uplink power control information be used, thereby reach the better implement effect.
In order to obtain better laser propagation effect, can the uplink power control information of frequency band n be sent on the frequency band n of DwPTS, that is, the uplink power control information of each frequency band is sent at the corresponding frequency band of DwPTS.In addition, because P-SCH takies the frequency band of 1.25MHz regularly, therefore, the uplink power control information of the shared frequency band of P-SCH can be sent on D-BCCH.
It should be noted that; In the uplink power control information of DwPTS transmission and the uplink power control information of sending at D-BCH; The transmission cycle of the two should be consistent, and because the uplink power control information change must be than comparatively fast, so the transmission cycle should be enough little.
Also need to prove, have corresponding relation between up power control information and the ascending time slot, that is, UE should adopt the pairing uplink power control information of this ascending time slot at each ascending time slot, adjusts its uplink transmission power at this time slot.Therefore, when sending uplink power control information, should indicate the pairing ascending time slot of this uplink power control information.
The method of indication comprises two kinds, and a kind of is to show clearly, and a kind of is hint.
A kind of method of showing clearly is: in the uplink power control information of sending, carry clear and definite indication information, indicate the pairing ascending time slot of this uplink power control information.
A kind of method of simply showing clearly is: the indication information that 3 bit (bit) are set.Because need the ascending time slot of indication to have 7 (time slot TS1～TS6 and UpPTS) at most, so 3 bit enough indicate said 7 ascending time slots.
A kind of hint method is: through sending the subframe numbers of uplink power control information, indicate the pairing ascending time slot of this uplink power control information.
For example, (during time slot TS1～TS4), be the uplink power control information that the DwPTS of 4N sends at subframe numbers, the corresponding ascending time slot of this uplink power control information is time slot TS1 when the ascending time slot in the sub-frame has 4; At subframe numbers is the uplink power control information of the DwPTS transmission of 4N+1, and the corresponding ascending time slot of this uplink power control information is time slot TS2; At subframe numbers is the uplink power control information of the DwPTS transmission of 4N+2, and the corresponding ascending time slot of this uplink power control information is time slot TS3; At subframe numbers is the uplink power control information of the DwPTS transmission of 4N+3, and the corresponding ascending time slot of this uplink power control information is time slot TS4.Wherein, N is a nonnegative integer.
Can find out that when adopting above-mentioned hint method, UE will be periodic to the adjustment of the uplink transmission power of each ascending time slot, the cycle of adjustment is 4 sub-frame.Because UE is the DwPTS of 4N when receiving the uplink transmission power control information at subframe numbers only, just adjusts its uplink transmission power at time slot TS1.In like manner, UE is the DwPTS of 4N+1,4N+2 and 4N+3 when receiving the uplink transmission power control information at subframe numbers only, just adjusts its uplink transmission power at time slot TS2, TS3 and TS4
Above-mentioned is to be example so that 4 ascending time slots to be arranged in the sub-frame; The rest may be inferred; When m ascending time slot arranged in the sub-frame, be the uplink power control information of the DwPTS transmission of m * N+i at subframe numbers, the corresponding ascending time slot of this uplink power control information is time slot TS (i+1); I=0,1 ..., m-1.
After UE receives uplink power control information, will be according to said its uplink transmission power of information adjustment at corresponding ascending time slot.
In the evolution scheme of present TDD system, the uplink power control algorithm that is adopted is shown in equality (1):
Wherein, P is the actual uplink transmitted power of UE, and min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of UE, M is a number of on frequency domain, distributing to the PRB of UE, P
PRB_iFor UE sends i PRB desired power.Wherein, can calculate P according to equality (2)
PRB_i:
P
PRB_i＝P
o+α×PL+Δ (2)
Wherein, P
oBe the ascending power parameter of sub-district, α is the path loss compensating factor of sub-district, and PL is a path loss, and Δ is that the closed loop of sending upward signal is corrected the factor.
Wherein, comprise parameter P in the uplink power control information of transmission
oAscending power parameter P
oCan be regarded as the power of the network side expectation PRB of transmission that UE adopted.Based on the transmitted power of this expectation, consider the path loss of signal, and the deviation of some existence, can calculate UE through equality (2) and send each PRB desired power.
Then, just can obtain all PRB desired power of UE transmission through calculating
.After calculating all PRB desired power of acquisition UE transmission, if this power is less than P
Max, then with the uplink transmission power of this power as reality, otherwise, with P
MaxUplink transmission power as reality.
Need to prove, at definite ascending power parameter P
oThe time, need to comprise: uplink interference level, target Signal to Interference plus Noise Ratio parameters such as (SINR) with reference to a lot of factors.And, in present evolution scheme, with regard to a sub-district, the ascending power parameter P of all PRB
oAll be identical.
Wherein,
P
SBe the power of signal, P
IBe the power of interference signal, P
NBe noise power.
But when UE was assigned with a plurality of PRB at frequency domain, the uplink interference level of each PRB was inconsistent, correspondingly, and the ascending power parameter P of each PRB
oShould not consistent yet.If by present evolution scheme, the ascending power parameter P of all PRB in sub-district
oAll identical, will cause the transmitted power on different PRB identical, not accurate enough to the control of ascending power.
For ascending power being controlled more exactly, the present invention proposes a kind of method of uplink power control.Utilize this method, can confirm the ascending power parameter of this PRB respectively, and the ascending power parameter of each PRB is sent to UE through uplink power control information according to each PRB.UE will calculate respectively according to the ascending power parameter of each PRB and send each PRB desired power P
PRB_i, and then calculate and send the needed gross power of all PRB
At last, exist
And P
MaxBetween the little person of selective value as the uplink transmission power P of reality.
Wherein, can calculate P according to equality (3)
PRB_i:
P
PRB_i＝P
o_i+α×PL+Δ (3)
Wherein, P
O_iBe the ascending power parameter of distributing to i the PRB of UE, Node B is at definite ascending power parameter P
O_iThe time, need the factor of reference to comprise: to parameters such as the uplink interference level of said i PRB and target SINR.
Can find out, confirm the ascending power parameter P of each PRB respectively
O_i, and utilize this parameter to calculate UE respectively and send each PRB desired power P
PRB_i, can carry out the control of ascending power more accurately.
Based on aforesaid uplink power control transmission of Information method; The present invention also provides a kind of uplink power control transmission of Information device; Fig. 4 is this schematic representation of apparatus, and this device comprises: frequency resource is confirmed cell S 41, configuration information transmitting element S42 and control information transmitting element S43.
Utilize frequency resource to confirm that cell S 41 can confirm in DwPTS, to be used to send the frequency resource of uplink power control information.
Wherein, the mode of confirming frequency resource has multiple.
A kind of mode can be: the pre-configured residual frequency resource that is used to send uplink power control information, when needs send uplink power control information, adopt the residual frequency resource of said configuration to get final product regularly.Adopt the benefit of this mode to be, realize simply the processing complexity when having reduced actual motion.
Another kind of mode can be: pre-configured frequency resource selection strategy, when needs send uplink power control information, will dynamically select to be used to send the residual frequency resource of uplink power control information according to said frequency resource selection strategy.Adopt the benefit of this mode to be, when actual motion, can select to be used to send the residual frequency resource of uplink power control information more neatly according to the operating position of frequency resource.
After frequency resource confirms that cell S 41 is confirmed to send the frequency resource of uplink power control information, configuration information transmitting element S42 will comprise the interior UE of configuration information of resource notifying cell that is used to send uplink power control information.
Resource described here had both comprised time interval resource, i.e. DwPTS comprises that also frequency resource confirms the frequency resource that cell S 41 is confirmed.
Configuration information transmitting element S42 can give all UE in the sub-district with said configuration information broadcast announcement through system message; For example configuration information is broadcast to all UE in the sub-district, also can notifies each UE respectively with said configuration information through the scheduling controlling channel through D-BCCH.
When needs send uplink power control information, control information transmitting element S43 will send uplink power control information in the frequency resource of confirming described in the DwPTS.
After UE receives said resource allocation information, can learn and send employed time interval resource of uplink power control information and frequency resource.
UE is normal to send up control data or business datum, and waits for the uplink power control information that receives in the corresponding frequencies resource of DwPTS.
Can find out, in terms of existing technologies, send uplink power control information, not only can improve the frequency resource utilance of DwPTS, also increase the purposes of DwPTS, and the message transmission rate of conventional time slot is also had no influence at DwPTS.In addition, can also the method for method of sending uplink power control information at DwPTS and existing transmission uplink power control information be used, thereby reach the better implement effect.
Also need to prove, have corresponding relation between up power control information and the ascending time slot, that is, UE should adopt the pairing uplink power control information of this ascending time slot at each ascending time slot, adjusts its uplink transmission power at this time slot.Therefore, when sending uplink power control information, should indicate the pairing ascending time slot of this uplink power control information.At this moment, said uplink power control transmission of Information device also should comprise an indicating member, is used for adding clear and definite indication information in the uplink power control information of sending, and indicates the pairing ascending time slot of this uplink power control information.
A kind of method of simply showing clearly is: the indication information that 3 bit (bit) are set.Because need the ascending time slot of indication to have 7 (time slot TS1～TS6 and UpPTS) at most, so 3 bit enough indicate said 7 ascending time slots.
Indicating member also can be controlled control information transmitting element S43, through the subframe numbers that control information transmitting element S43 sends uplink power control information, indicates the pairing ascending time slot of this uplink power control information.
Based on above-mentioned ascending power control method, the present invention also proposes the uplink power control device of a kind of UE of being used for, and Fig. 5 is this schematic representation of apparatus, and this device comprises that parameter obtains cell S 51 and power calculation unit S52.
After UE received the uplink power control information that network side sends, parameter obtained cell S 51 can obtain to distribute to i the PRB of this UE from this information ascending power parameter P
O_iPower calculation unit S52 can obtain adjusted actual uplink transmitted power P through calculating
;
P wherein
MaxBe the maximum uplink transmission power of UE, M is a number of on frequency domain, distributing to the PRB of UE, P
PRB_iFor UE sends i PRB desired power;
P
PRB_i=P
O_i+ α * PL+ Δ, α are the path loss compensating factors of sub-district, and PL is a path loss, and Δ is that the closed loop of sending upward signal is corrected the factor.
Said disclosed embodiment is provided, can be so that those skilled in the art can realize or use the present invention.To those skilled in the art, the various modifications of these embodiment are conspicuous, and the general principles of definition here also can be applied to other embodiment on the basis that does not depart from the scope of the present invention with purport.Above-described embodiment is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a uplink power control transmission of Information method is characterized in that, comprising:
Confirm in descending pilot frequency time slot DwPTS, to be used to send the frequency resource of uplink power control information;
To comprise the interior user equipment (UE) of configuration information of resource notifying cell that is used to send uplink power control information, wherein, said uplink power control information comprises each the Physical Resource Block PRB ascending power parameter P separately that distributes to user equipment (UE)
O_i, P
O_iIt is the ascending power parameter of distributing to i Physical Resource Block PRB of user equipment (UE);
Send uplink power control information in the frequency resource of confirming described in the descending pilot frequency time slot DwPTS; After making said user equipment (UE) receive said uplink power control information, obtain the adjusted actual uplink transmitted power of said user equipment (UE) P through calculating
;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the Physical Resource Block PRB of user equipment (UE), P
PRB_iFor user equipment (UE) sends i Physical Resource Block PRB desired power;
2. the method for claim 1 is characterized in that, confirms in descending pilot frequency time slot DwPTS, to send the frequency resource of uplink power control information by pre-configured frequency resource.
3. the method for claim 1 is characterized in that, by pre-configured frequency resource selection strategy, confirms in descending pilot frequency time slot DwPTS, to send the frequency resource of uplink power control information.
4. the method for claim 1 is characterized in that, gives all user equipment (UE)s in the sub-district through system message with said configuration information broadcast announcement, or notifies each user equipment (UE) through the scheduling controlling channel respectively with said configuration information.
5. the method for claim 1 is characterized in that, in the uplink power control information of sending, carries indication information, indicates the pairing ascending time slot of this uplink power control information.
6. the method for claim 1 is characterized in that, through sending the subframe numbers of uplink power control information, indicates the pairing ascending time slot of this uplink power control information.
7. the method for claim 1 is characterized in that, the uplink power control information of each frequency band is sent at the corresponding frequency band of descending pilot frequency time slot DwPTS.
8. method as claimed in claim 7 is characterized in that, further comprises:
The uplink power control information of the shared frequency band of primary synchronization channel P-SCH is sent on dynamic broadcast control channel D-BCCH;
In the uplink power control information of descending pilot frequency time slot DwPTS transmission and the uplink power control information of sending at dynamic broadcast control channel D-BCCH, the transmission cycle of the two is consistent.
9. an ascending power control method is used for user equipment (UE), it is characterized in that, comprising:
Receive uplink power control information, learn the ascending power parameter P of i the Physical Resource Block PRB that distributes to this user equipment (UE)
O_i
Calculate
and obtain adjusted actual uplink transmitted power P;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the PRB of UE, P
PRB_iFor user equipment (UE) sends i Physical Resource Block PRB desired power;
Be the path loss compensating factor of sub-district, PL is a path loss,
Be that the closed loop of sending upward signal is corrected the factor, P
O_iIt is the ascending power parameter of distributing to i Physical Resource Block PRB of user equipment (UE).
10. method as claimed in claim 9 is characterized in that, receives uplink power control information at descending pilot frequency time slot DwPTS.
11. method as claimed in claim 9 is characterized in that, through the entrained clear and definite indication information of uplink power control information, learns the pairing ascending time slot of this uplink power control information.
12. method as claimed in claim 9 is characterized in that, through receiving the subframe numbers of uplink power control information, learns the pairing ascending time slot of this uplink power control information.
13. a uplink power control device is used for user equipment (UE), it is characterized in that, comprising:
Parameter obtains the unit, is used for after user equipment (UE) receives uplink power control information, and the ascending power parameter P of i Physical Resource Block PRB of this user equipment (UE) is distributed in acquisition
O_iWith
Power calculation unit is used for calculating
and obtains adjusted actual uplink transmitted power P;
Wherein, min{a, b} represent to get the minimum value among a, the b, P
MaxBe the maximum uplink transmission power of user equipment (UE), M is a number of on frequency domain, distributing to the PRB of UE, P
PRB_iFor user equipment (UE) sends i Physical Resource Block PRB desired power;
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| CN101415226B (en) * | 2007-10-15 | 2010-06-23 | 大唐移动通信设备有限公司 | Method and apparatus for improving down pilot time slot resource utilization ratio of TDD system |
| CN104244389B (en) * | 2009-03-16 | 2018-01-19 | 华为技术有限公司 | A kind of Poewr control method, device and the network equipment |
| CN101888636B (en) | 2009-05-14 | 2013-10-02 | 电信科学技术研究院 | Configuration and detection method of downlink measurement pilot frequency, and device |
| WO2012173570A1 (en) * | 2011-06-17 | 2012-12-20 | Telefonaktiebolaget L M Ericsson (Publ) | A wireless device, a network node and methods therein |
| CN102395184B (en) * | 2011-06-30 | 2015-08-26 | 电信科学技术研究院 | A kind of method and device implementing uplink power control |
| WO2015113244A1 (en) * | 2014-01-29 | 2015-08-06 | 华为技术有限公司 | User equipment and method for determining transmit power |
| CN108282873B (en) * | 2017-01-06 | 2023-04-07 | 中兴通讯股份有限公司 | System message transmission method, device and system |
| CN110650522B (en) * | 2018-06-26 | 2023-01-10 | 中国移动通信有限公司研究院 | Closed-loop power control method, network side equipment and terminal |
| CN116782354A (en) * | 2019-02-15 | 2023-09-19 | 中兴通讯股份有限公司 | Power control parameter indication |
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