CN101483452A - User terminal power control method, base station and user terminal - Google Patents
User terminal power control method, base station and user terminal Download PDFInfo
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- CN101483452A CN101483452A CNA2008100015618A CN200810001561A CN101483452A CN 101483452 A CN101483452 A CN 101483452A CN A2008100015618 A CNA2008100015618 A CN A2008100015618A CN 200810001561 A CN200810001561 A CN 200810001561A CN 101483452 A CN101483452 A CN 101483452A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The present invention relates to the technical field of wireless communication, and discloses a user terminal power control method, a base station and the user terminal, wherein, the embodiment of the invention provides the user terminal power control method which comprises the following steps: after receiving the resource allocation indication, initiating a collision detection of layer 2 with the resource allocated by the resource allocation indication; if a power control command is received in the collision detection process of layer 2, determining whether a power adjusting period is obtained, and if the power adjusting period is obtained, executing the power control command received in the power adjusting period for entering another power adjusting period; and if the power adjusting period is not obtained, not executing the power control command. The technical solution provided by the embodiment of the invention does not lead to the DPCCH power reduction of UE caused by inner loop power control. The uplink power of UE is facilitated to more accurate, and furthermore the raising of error code rate of initial transmission is not caused.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to user terminal power control method, base station and user terminal.
Background technology
User terminal (UE:User Equipment) obtains corresponding resource at the preceding needs of access base station (Node B), specifically can obtain resource by the random access procedure of physical layer, after having obtained resource, just can use the resource of obtaining to insert Node B, the resource of obtaining is to strengthen dedicated channel (E-DCH:Enhanced Dedicated Channel) resource.In obtaining the process of resource, UE can not send the sign of oneself to NodeB, and can only choose a signature at random from the identification signature set, serves as that sign is obtained resource with the signature of choosing then.Owing to be the picked at random signature, thereby may have the situation that a plurality of UE choose same signature, and Node B can not to identify be that a plurality of UE have chosen same signature, still can be the sign Resources allocation with the signature, the UE that signature is corresponding can be known as the sign of the resource that self signature distributes.
Because resource only can be used by a UE at synchronization, if thereby a plurality of UE chosen same signature and be assigned to same resource and will cause colliding.Mainly contain two kinds of modes that solve collision now and all be the collision detection of layer 2 (L2), specific as follows:
First kind of mode: in random access procedure, UE is after transmission is leading, obtain indication and E-DCH resource allocation signal by obtaining indicating channel (AICH:Acquisition Indicator Channel) channel acquisition access, UE uses the E-DCH resource of distributing to begin transmitting uplink data then, the sign of UE, the sign of UE can be Cell Radio Network Temporary Identifier/Identity, Cell-RNTIs (C-RNTI:CELL Radio NetworkTemporary Identifier) etc.; The medium access control that is added into expansion strengthens the head of entity (MAC-e:Medium Access Control-e).After Node B receives E-DCH, the UE that carries according to the MAC-e head identifies, reply this UE by enhancing dedicated channel absolute grant channel (E-AGCH:E-DCHAbsolute Grant Channel) and can continue to use this E-DCH resource, do not receive that in the given time the UE that replys will stop using this resource.Therefore, when bumping, a plurality of UE use identical E-DCH resource to send UE and identify the B to Node, Node B is according to the UE sign that receives, obtained this resource by one of them UE of information answer that carries among the E-AGCH by behind the UE sign mask, do not receive in the scheduled time that the UE that replys will stop using this resource, thereby solved collision.
The second way: in random access procedure, UE is after transmission is leading, obtain indication by AICH channel acquisition access and reply, UE receives high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH:HighSpeed Physical Downlink Shared Channel) channel to obtain the ascending resource assignment messages then.The UE that obtains resource uses the E-DCH resource of distributing that UE sign and schedule information are sent to Node B, and Node B only carries a UE sign by L2 acknowledgement messaging UE in the L2 message.After if UE receives this L2 message in the given time, with the UE that carries sign and own sign relatively, obtained this resource as if identical then showing, if difference then stop using this E-DCH resource.If UE does not receive this L2 message in the given time, then stop using this E-DCH resource.Wherein L2 specifically is media interviews controls (MAC:Media Access Control) layers.
In realizing process of the present invention, the inventor finds: use above-mentioned two kinds of collision solutions, if collision takes place, though can solve collision, but before collision solves, a plurality of UE use identical ascending resource simultaneously, Node B can think that this ascending resource is to be sent by a UE, carrying out Multipath searching (RAKE) according to multipath receives, the up DPCCH power of signal interference ratio (SIR:Signal toInterference Ratio) control of the special physical controlling channel of upward (DPCCH:Dedicated Physical Control Channel) after inner-loop power control can merge according to multipath is to satisfy the sir target value, because the DPCCH of this moment is the gross power of a plurality of UE, thereby can regulate the power of UE by power control command, UE can regulate power according to the power control command that receives, and causes the SIR of each UE all to be discontented with the foot-eye value.Therefore, after collision solved, the DPCCH power of UE also had been lowered, thereby the ascending power of the UE of the up E-DCH resource of continuation use is not accurate enough, can cause the rising of the initial transmission error rate.
Summary of the invention
The embodiment of the invention provides collision checking method, Poewr control method, base station and user terminal, to solve the under powered problem of DPCCH of the UE that causes because of collision detection.
The purpose of the embodiment of the invention is achieved through the following technical solutions:
The embodiment of the invention provides a kind of user terminal power control method, comprising:
After receiving the resource allocation indication, from the signature set that presets, select signature to carry out the collision detection of layer 1;
If in the collision detection process of described layer 1, obtain resource, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed.
The embodiment of the invention also provides another kind of user terminal power control method, comprising:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, judge whether to arrive the power adjustment cycle, if arrive the power adjustment cycle, carry out the power control command that receives in the power adjustment cycle, enter next power adjustment cycle; If do not arrive the power adjustment cycle, do not carry out described power control command.
The embodiment of the invention also provides the third user terminal power control method, comprising:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, carry out the power adjustment or keep power constant according to the power adjustment mode that presets.
The embodiment of the invention also provides a kind of user terminal, comprising:
Receiving element is used to receive the resource allocation indication;
Layer 1 detecting unit is used for selecting signature to carry out the collision detection of layer 1 from the signature set that presets after described receiving element receives described resource allocation indication;
Layer 2 detecting unit are used for using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed when the collision detection process of described layer 1 obtains resource.
The embodiment of the invention also provides another kind of user terminal, comprising:
Receiving element is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate the unit, be used for after described receiving element receives described resource allocation indication, using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
Judging unit is used for judging whether to arrive the power adjustment cycle after described receiving element receives described power control command;
Command executing unit is used for carrying out the power control command of accepting in the power adjustment cycle when described judgment unit judges arrives the power adjustment cycle.
The embodiment of the invention also provides the third user terminal, comprising:
Receiving element is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate the unit, be used for after described receiving element receives described resource allocation indication, using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
The command process unit is used for not carrying out described power control command after described receiving element receives described power control command, keeps power constant.
The embodiment of the invention also provides a kind of base station, comprising:
Information receiving unit is used to receive the information that comprises signature, and described information, is selected from the signature set that presets after receiving the resource allocation indication by user terminal;
Message sending unit is used for after described information receiving unit receives described information, sends the response message that comprises a signature.
The above technical scheme that provides from the embodiment of the invention as can be seen, because the embodiment of the invention can be before the collision detection of carrying out L2, carry out the collision detection of L1 earlier, thereby when bumping, collision detection by L1 detects earlier, also have the probability of collision when having reduced the collision detection of L2, thus the probability that need regulate the DPCCH power of UE when having reduced the collision detection of L2; Embodiments of the invention can also just be carried out power control command when the power adjustment cycle arrives, thereby can stablize the power of UE in the power adjustment cycle; Embodiments of the invention can also not carried out power control command after receiving power control command, the power of UE is not adjusted, thereby can be stablized the power of UE; Therefore, the user terminal power control method that uses the embodiment of the invention to provide can not cause the DPCCH power of UE to reduce because of inner loop power control, makes the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Description of drawings
Fig. 1 is the flow chart of user terminal power control method embodiment one in the embodiment of the invention;
Fig. 2 is the flow chart of user terminal power control method embodiment two in the embodiment of the invention;
Fig. 3 is the flow chart of user terminal power control method embodiment three in the embodiment of the invention;
Fig. 4 is the structure chart of user terminal embodiment one in the embodiment of the invention;
Fig. 5 is the structure chart of user terminal embodiment two in the embodiment of the invention;
Fig. 6 is the structure chart of user terminal embodiment three in the embodiment of the invention;
Fig. 7 is the structure chart of base station embodiment one in the embodiment of the invention;
Fig. 8 is the structure chart of base station embodiment two in the embodiment of the invention.
Embodiment
For make purpose of the present invention, technical scheme, and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 1 has described the flow process of the user terminal power control method embodiment one that the embodiment of the invention provides, comprising:
UE can receive the resource allocation indication from Node B after inserting at random, have the information of the resource of distribution in the resource allocation indication, specifically can be the E-DCH resource, as the E-DCH channel etc.Certainly, when receiving the resource allocation indication, also can receive the information such as reply that inserts.
Because a plurality of UE of access phase may select identical access signature, therefore same resource may be distributed to a plurality of UE, therefore need carry out collision detection, and the embodiment of the invention was carried out the L1 collision detection before the L2 collision detection; Carry out collision detection because this stage UE can not send the UE sign of self, thereby from the signature set that presets, select signature to carry out collision detection as self identification.The signature set that presets can be collision detection (CD:Collision Detection) signature set, also can be signature set that increases newly etc.The embodiment of the invention does not limit signature set, not to selecting the method for signature to limit from signature set yet.
The testing process of layer 1 is specific as follows: select signature from the signature set that presets; Send the information of the signature comprise selection to the base station, whether this information triggers the resource of the resource allocation indication being distributed base station and bumps and detect; The resource that the base station is distributed the resource allocation indication sends response message after whether bumping and detecting, if the base station gets access at least two signatures from the information that receives, response message comprises at least two signatures; If the base station gets access to a signature from the information that receives, response message comprises a signature; Reception is from the response message of base station, and whether the signature that the detection response message comprises is identical with the signature of selecting, if the identical resource that then obtains.
UE can send the information that comprises signature to the base station within the predetermined time after obtaining the resource allocation indication; Therefore, the information that receives in this preset time of base station all is to be sent by the UE that is assigned to same resource.The base station judges whether to bump according to the number of signatures that information comprised that receives, if at least two signatures are arranged, then explanation has at least two UE to obtain same resource, and collision has promptly taken place; If have only a signature, then explanation does not bump.The response message that sends includes only a signature, and the UE that chooses the signature that response message comprises obtains resource.Wherein, if the information that the base station receives has comprised at least two signatures, then choosing a signature at least from above-mentioned two signatures, how the embodiment of the invention specifically chooses a signature at least from above-mentioned two signatures if not limiting.
The collision detection of the resource initiating layer 2 that step 104, use resource allocation indication are distributed.
The collision detection process of layer 2 specifically can be as follows: UE uses the E-DCH resource of distributing to begin transmitting uplink data, and the sign of UE is added into the head of the MAC-e of expansion.After Node B receives E-DCH, according to the UE sign that the MAC-e head carries, reply this UE by E-AGCH and can continue to use this E-DCH resource, do not receive that in the given time the UE that replys will use this resource the stopping time.Therefore, when bumping, a plurality of UE use identical E-DCH resource to send UE and identify the B to Node, NodeB is according to the UE sign that receives, obtained this resource by one of them UE of information answer that carries among the E-AGCH by behind the UE sign mask, do not receive in the scheduled time that the UE that replys will stop using this resource, thereby solved collision.
The collision detection process of layer 2 is concrete can also be as follows: the UE that obtains resource uses the E-DCH resource of distributing that UE sign and schedule information are sent to Node B, and Node B only carries a UE sign by L2 acknowledgement messaging UE in the L2 message.After if UE receives this L2 message in the given time, with the UE that carries sign and own sign relatively, obtained this resource as if identical then showing, if difference then stop using this E-DCH resource.If UE does not receive this L2 message in the given time, then stop using this E-DCH resource.
From the above, present embodiment is before the collision detection of carrying out L2, carry out the collision detection of L1 earlier, thereby when bumping, the collision detection by L1 detects earlier, the probability that also has collision when having reduced the collision detection of L2, thereby therefore the probability that need regulate the DPCCH power of UE when having reduced the collision detection of L2, can not cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
As the description of embodiment one, before the L2 collision detection, increased the collision detection of L1, the collision detection detailed process of L1 is: UE by send Access Preamble and receive on the AICH reply after, access phase finishes, the collision resolution stage of L1 begins.UE is optional signature in the CD signature set, and selects an access slot subchannel from the CD groups of subchannels, then with the identical CD prefix of power delivery of the through-put power of last Access Preamble, waits for replying that Node B sends then.If Node B finds to have used a plurality of CD signatures, collision has promptly taken place, then only reply a CD signature.Because the CD signature is concentrated 16 signatures are arranged, the UE of Jie Ruing concentrates at the CD signature and selects the likelihood ratio of identical signature less simultaneously, thereby the L2 collision detection stage find collision may be also smaller, control inaccurate problem thereby reduced the power that may occur in the L2 collision detection.
Wherein, do not reduce the DPCCH power of UE for further assurance, the embodiment of the invention can also be improved the collision detection process of L2, and therefore, collision checking method embodiment provided by the invention can also comprise: receive power control command in the collision detection process of layer 2 after; Judge whether to adjust the time,, carry out power control command if power is adjusted the time for power.
The power adjustment time can preestablish, and for example can be set at several time slots etc.; Adjust the time every power and just carry out power control command one time, thereby can in power is adjusted the time, stablize the power of UE.
Or comprise: after in the collision detection process of layer 2, receiving power control command; Do not carry out the power control command that receives, keep power constant.
After receiving power control command, do not carry out power control command, keep the power of UE constant; Specifically the power of UE can be remained power last time, or the power bias that on the basis of power last time, fixes; Promptly do not carry out power control command fully, or only after receiving power control command, the power bias that fixes, and the power adjustment size of constant power biasing is predefined, irrelevant with power control command, thus can stablize the power of UE.
By the way the collision detection process of layer 2 is improved,, therefore, can not reduced the DPCCH power of UE, make the ascending power of UE accurate, can not cause the rising of the initial transmission error rate owing to can stablize the power of UE.
As from the foregoing, collide in the solution process when UE identifies to Node B at use E-DCH transmission UE, UE adopts inner-loop power control at a slow speed, comprises that specifically the power of up DPCCH in the several slots adjustment once according to the power control command that receives.Also can be to adopt open loop power control, comprise that specifically UE remains unchanged in the through-put power of the special physical controlling channel of upward in L2 collision detection stage, the power of last Access Preamble that sends as reference UE etc., UE can equate or have constant power to setover at the power in this stage with it.During collision solves, after UE receives the power control commands of down control channel transmission, carry out the power adjustment according to above-mentioned inner-loop power control mode or open loop power control mode at a slow speed, after collision solution process finishes, just carry out power control according to original inner-loop power control mechanism.Wherein, the variation of power control mode can be switched voluntarily by UE before and after the collision solution process, also can be controlled by downlink signaling by Node B.
Fig. 2 has described the flow process of the user terminal power control method embodiment two that the embodiment of the invention provides, comprising:
The collision detection of the resource initiating layer 2 that step 202, use resource allocation indication are distributed;
The power adjustment cycle can preestablish, and for example can be set at several time slots etc.;
The power control command that receives in step 205, the execution power adjustment cycle;
Wherein, the power control command that receives in the execution power adjustment cycle that can be part or all of also can determine how to carry out power control command according to the quantity of the power control command that receives in the power adjustment cycle that receives.
If do not arrive the power adjustment cycle, then do not carry out power control command, thereby can power not adjusted, holding power stable.
From the above, use present embodiment can when the power adjustment cycle arrives, just carry out power control command, thereby can in the power adjustment cycle, stablize the power of UE, therefore, can not cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Fig. 3 has described the flow process of the Poewr control method embodiment three that the embodiment of the invention provides, comprising:
The collision detection of the resource initiating layer 2 that step 302, use resource allocation indication are distributed;
After receiving power control command, do not carry out power control command, keep the power of UE constant; The power of UE can be remained power last time, or the power bias that on the basis of power last time, fixes; Promptly do not carry out power control command fully, or only after receiving power control command, the power bias that fixes, and the power adjustment size of constant power biasing is predefined, irrelevant with power control command, thus can stablize the power of UE.
From the above, use present embodiment after receiving power control command, do not carry out power control command, the power of UE is not adjusted, thereby can stablize the power of UE, therefore, can not cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Wherein, the Poewr control method that the embodiment of the invention provides can carry out the collision detection of L1 earlier before the resource of using the resource allocation indication to be distributed is initiated the collision detection of L2, thereby only in the collision detection of having passed through L1, promptly in the collision detection of L1, obtained just to carry out after the resource collision detection of L2, thereby reduced the probability that when the collision detection of L2, also has collision, further reduced because inner loop power control causes the under powered possibility of the DPCCH of UE.
The embodiment of the invention also provides user terminal, and Fig. 4 has described the structure of user terminal embodiment one provided by the invention, comprising:
Receiving element 401 is used to receive the resource allocation indication;
Layer 1 detecting unit 402 is used for after receiving element receives the resource allocation indication, selects signature to carry out the collision detection of layer 1 from the signature set that presets;
Layer 1 detecting unit specifically can comprise: selected cell is used for selecting signature from the signature set that presets after receiving element 401 receives the resource allocation indication;
At this moment, user terminal embodiment one also comprises information transmitting unit, be used for sending the information of the signature that comprises that selected cell is selected to the base station, whether the resource that this information triggering base station is distributed the resource allocation indication bumps and detects, after whether the resource that the base station is distributed the resource allocation indication bumps and detects, send response message, if the information that the base station receives comprises at least two signatures, response message comprises at least two signatures; If the information that the base station receives comprises a signature, response message comprises a described signature; Above-mentioned receiving element 401 also is used to receive the response message from the base station, and whether the signature that the detection response message comprises is identical with the signature of selecting, if the identical resource that then obtains.
Layer 2 detecting unit 403 are used for using resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed when the collision detection process of layer 1 obtains resource.
From the above, present embodiment can be before the collision detection of carrying out L2, carry out the collision detection of L1 earlier, thereby when bumping, the collision detection by L1 detects earlier, the probability that also has collision when having reduced the collision detection of L2, thereby therefore the probability that need regulate the DPCCH power of UE when having reduced the collision detection of L2, can not cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Further, the receiving element 401 of user terminal embodiment one provided by the invention also is used for the collision detection process received power control command at layer 2;
At this moment, user terminal embodiment one provided by the invention can also comprise:
Judging unit is used for judging whether to arrive the power adjustment cycle after receiving element 401 received power control commands;
Command executing unit is used for carrying out the power control command that receives in the power adjustment cycle when judgment unit judges arrives the power adjustment cycle.
Perhaps can also comprise:
The command process unit is used for not carrying out power control command after receiving element 401 receives power control command, keeps power constant.
At this moment, use user terminal embodiment one provided by the invention can also stablize the power of UE, therefore, can not can cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Fig. 5 has described the structure of user terminal embodiment two provided by the invention, comprising:
Receiving element 501 is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate unit 502, be used for after receiving element 501 receives the resource allocation indication, using resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
Judging unit 503 is used for judging whether to arrive the power adjustment cycle after receiving element 501 receives power control command;
From the above, use present embodiment can when the power adjustment cycle arrives, just carry out power control command, thereby can in the power adjustment cycle, stablize the power of UE, therefore, can not cause the DPCCH power of UE to reduce because of inner loop power control, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate.
Fig. 6 has described the structure of user terminal embodiment three provided by the invention, comprising:
Receiving element 601 is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate unit 602, be used for after receiving element 601 receives the resource allocation indication, using resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
From the above, use present embodiment after receiving power control command, do not carry out power control command, the power of UE is not adjusted, thereby can stablize the power of UE, therefore, can not reduce the DPCCH power of UE, make the ascending power of UE accurate, can not cause the rising of the initial transmission error rate.
The embodiment of the invention also provides the base station, and the structure of base station embodiment one provided by the invention comprises as shown in Figure 7:
Fig. 8 has described the structure of base station embodiment two, comprising:
Judging unit 802 is used for after information receiving unit 801 receives above-mentioned information, judges whether the information that information receiving unit receives comprises at least two signatures;
Signature selected cell 803 is used for selecting a signature from least two signatures when judging unit 802 judges that the information of information receiving unit reception comprises at least two signatures;
From the above, present embodiment is judging that the information of accepting comprises at least two signatures, be resource that UE distributes when collision has taken place, transmission includes only the response message of a signature, thereby only allow a UE obtain resource, thereby solve collision, the probability that also has collision when having reduced the collision detection of L2, thereby the probability that need regulate the DPCCH power of UE when having reduced the collision detection of L2, therefore, can not cause the DPCCH power of UE to reduce, make the ascending power of UE more accurate, can not cause the rising of the initial transmission error rate because of inner loop power control.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
After receiving the resource allocation indication, from the signature set that presets, select signature to carry out the collision detection of layer 1;
If in the collision detection process of described layer 1, obtain resource, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed.
Or comprise the steps:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, judge whether to arrive the power adjustment cycle, if arrive the power adjustment cycle, carry out the power control command that receives in the power adjustment cycle, enter next power adjustment cycle; If do not arrive the power adjustment cycle, do not carry out described power control command.
Or comprise the steps:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, do not carry out power control command, keep power constant.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than user terminal power control method, base station and user terminal that the embodiment of the invention provided are described in detail, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (15)
1, a kind of user terminal power control method is characterized in that, comprising:
After receiving the resource allocation indication, from the signature set that presets, select signature to carry out the collision detection of layer 1;
If in the collision detection process of described layer 1, obtain resource, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed.
2, user terminal power control method as claimed in claim 1 is characterized in that, the described collision detection of selecting signature to carry out layer 1 from the signature set that presets comprises:
From the signature set that presets, select signature;
Send the information of the described signature comprise selection to the base station, whether this information triggers the resource of described resource allocation indication being distributed described base station and bumps and detect;
Reception is from the response message that comprises a signature of base station, whether detect the signature that described response message comprises identical with the described signature of selecting, if the identical resource that then obtains, whether the resource that described response message is distributed described resource allocation indication by described base station bumps is detected the back transmission, if the information that described base station receives comprises at least two signatures, described response message comprises in described at least two signatures; If the information that described base station receives comprises a signature, described response message comprises a described signature.
3, user terminal power control method as claimed in claim 1 or 2 is characterized in that, this method further comprises receive power control command in the collision detection process of described layer 2 after:;
Judge whether to arrive the power adjustment cycle,, carry out the power control command that receives in the power adjustment cycle, enter next power adjustment cycle if arrive the power adjustment cycle; If do not arrive the power adjustment cycle, do not carry out described power control command.
4, user terminal power control method as claimed in claim 1 or 2 is characterized in that, this method receives power control command in the collision detection process of described layer 2 after, keeps power constant.
5, user terminal power control method as claimed in claim 4 is characterized in that, constant being specially of described maintenance power:
Keep the power biasing that fixes for transmitted power last time or on the basis of transmitted power last time.
6, a kind of user terminal power control method is characterized in that, comprising:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, judge whether to arrive the power adjustment cycle, if arrive the power adjustment cycle, carry out the power control command that receives in the power adjustment cycle, enter next power adjustment cycle; If do not arrive the power adjustment cycle, do not carry out described power control command.
7, a kind of user terminal power control method is characterized in that, comprising:
After receiving the resource allocation indication, use described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
If in the collision detection process of described layer 2, receive power control command, carry out the power adjustment or keep power constant according to the power adjustment mode that presets.
8, a kind of user terminal is characterized in that, comprising:
Receiving element is used to receive the resource allocation indication;
Layer 1 detecting unit is used for selecting signature to carry out the collision detection of layer 1 from the signature set that presets after described receiving element receives described resource allocation indication;
Layer 2 detecting unit are used for using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed when the collision detection process of described layer 1 obtains resource.
9, user terminal as claimed in claim 8 is characterized in that, described layer 1 detecting unit comprises:
Selected cell is used for selecting signature from the signature set that presets after described receiving element receives described resource allocation indication;
This user terminal also comprises transmitting element, is used for sending to the base station information of the described signature comprise that described selected cell is selected, and whether this information triggers the resource of described resource allocation indication being distributed described base station and bump and detect;
Described receiving element also is used to receive the response message that comprises a signature from described base station, and whether with the described signature selected identical, if the identical resource that then obtains if detecting the signature that described response message comprises; Whether the resource that described response message is distributed described resource allocation indication by described base station bumps is detected the back transmission, if the information that described base station receives comprises at least two signatures, described response message comprises in described at least two signatures; If the information that described base station receives comprises a signature, described response message comprises a described signature.
10, user terminal as claimed in claim 8 or 9 is characterized in that, described receiving element also is used for the collision detection process received power control command at described layer 2;
This user terminal also comprises:
Judging unit is used for judging whether to arrive the power adjustment cycle after described receiving element receives described power control command;
Command executing unit is used for carrying out the power control command that receives in the power adjustment cycle when described judgment unit judges arrives the power adjustment cycle.
11, user terminal as claimed in claim 8 or 9 is characterized in that, described receiving element also is used for the collision detection process received power control command at described layer 2;
This user terminal also comprises:
The command process unit is used for not carrying out described power control command after described receiving element receives described power control command, keeps power constant.
12, a kind of user terminal is characterized in that, comprising:
Receiving element is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate the unit, be used for after described receiving element receives described resource allocation indication, using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
Judging unit is used for judging whether to arrive the power adjustment cycle after described receiving element receives described power control command;
Command executing unit is used for carrying out the power control command of accepting in the power adjustment cycle when described judgment unit judges arrives the power adjustment cycle.
13, a kind of user terminal is characterized in that, comprising:
Receiving element is used to receive the resource allocation indication; Received power control command in the collision detection process of layer 2;
Detect and initiate the unit, be used for after described receiving element receives described resource allocation indication, using described resource allocation to indicate the collision detection of the resource initiating layer 2 that is distributed;
The command process unit is used for not carrying out described power control command after described receiving element receives described power control command, keeps power constant.
14, a kind of base station is characterized in that, comprising:
Information receiving unit is used to receive the information that comprises signature, and described information, is selected from the signature set that presets after receiving the resource allocation indication by user terminal;
Message sending unit is used for after described information receiving unit receives described information, sends the response message that comprises a signature.
15, base station as claimed in claim 14 is characterized in that, also comprises:
Judging unit is used for after described information receiving unit receives described information, judges whether the information that described information receiving unit receives comprises at least two signatures;
The signature selected cell is used for selecting a signature at least from described two signatures when the information that the described information receiving unit of described judgment unit judges receives comprises at least two signatures;
The included signature of described response message that described message sending unit sends is the signature that described signature selected cell is selected at least from described two signatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100015618A CN101483452A (en) | 2008-01-09 | 2008-01-09 | User terminal power control method, base station and user terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100015618A CN101483452A (en) | 2008-01-09 | 2008-01-09 | User terminal power control method, base station and user terminal |
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| Publication Number | Publication Date |
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| CN101483452A true CN101483452A (en) | 2009-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100015618A Pending CN101483452A (en) | 2008-01-09 | 2008-01-09 | User terminal power control method, base station and user terminal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8494545B2 (en) | 2009-03-18 | 2013-07-23 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for acquiring load information |
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2008
- 2008-01-09 CN CNA2008100015618A patent/CN101483452A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8494545B2 (en) | 2009-03-18 | 2013-07-23 | Huawei Technologies Co., Ltd. | Method, apparatus, and system for acquiring load information |
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