CN101552628A - Method and device for controlling launching power of shared control channel - Google Patents
Method and device for controlling launching power of shared control channel Download PDFInfo
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Abstract
The invention provides a method and a device for controlling launching power of a shared control channel, which is used for a shared control channel HS-SCCH, belonging to the technical field of telecommunications. The method comprises the following steps that: a base station sends resource scheduling information on an HS-SCCH channel to user equipment; whether the UE receives the resource scheduling information or not is judged; a judging result is obtained; and then, the launching power of the HS-SCCH channel is controlled according to the judging result. Through the method, the launching power of the HS-SCCH channel can be accurately judged whether to be proper or not, and on the basis of guaranteeing that the UE can correctly receive the resource scheduling information on the HS-SCCH channel, the interference of the HS-SCCH channel to other channels and adjacent cells in the same time slot can be effectively lowered so as to improve the system capacity and the system stability.
Description
Technical field
The present invention relates to technical field of telecommunications, relate in particular to a kind of method and device of controlling the transmitting power of shared control channel.
Background technology
HSDPA (High Speed Downlink Packet Access, the high speed downlink packet access) technology is a kind of technology that the high-speed down data business is provided at the multi-user, can be used for satisfying the Packet Service that has the characteristic of bursting in the downlink, as flow data service, interactive application.
Because Radio Resource is limited, in order to satisfy professional rate requirement, in HSDPA, introduced shared channel HS-DSCH (High-Speed Downlink Shared Channel, high-speed downlink shared channel), HS-SCCH (shared control channel) and HS-SICH (Shared Information Channel forHS-DSCH, the shared information channel of HS-DSCH), and by AMC (Adaptive Modulationand Coding, adaptive modulation and coding) and HARQ (Hybrid Automatic Repeat Request, the mixed automatic retransmission request) etc. technology improves user's downlink business speed, thereby turn down service delay, and can improve cell throughout.
The method of existing control HS-SCCH channel transmitting power generally adopts: the TPC (power command control word) that feeds back on HS-SICH according to UE (subscriber equipment) adjusts the HS-SCCH channel transmitting power, and formulate is as follows:
PTX
HS-SCCH(n+1)＝PTX
HS-SCCH(n)+TPC
PTX
HS-SCCH(n+1), the value of expression (n+1) inferior HS-SCCH channel transmitting power;
PTX
HS-SCCH(n), the value of representing the n time HS-SCCH channel transmitting power;
TPC represents the adjustment command word of HS-SCCH channel transmitting power, and according to 3GPP (third generation partner program) protocol specification, TPC=00 represents to adjust upward a power step size; TPC=11 represents to adjust a power step size downwards.
In realizing process of the present invention, find that there are the following problems at least in the prior art:
Owing to be to share by a plurality of users to use HS-DSCH channel and HS-SCCH channel in HSDPA, the time interval that unique user is scheduled may be long, therefore the time interval of unique user reception HS-SCCH also can be long, according to existing HS-SCCH channel transmitting power control algolithm, the HS-SCCH channel transmitting power control interval will be long, causes the HS-SCCH channel transmitting power of Node B (base station) just inaccurate.Especially under user's high-speed mobile, after after a while, path loss variation is bigger, simultaneously, descending time slot disturbs and also may have greatly changed, and the HS-SCCH channel is to adopt TPC command word in the past of a specified duration to do inner loop power control, cause can accurately not controlling the HS-SCCH channel transmitting power, if and the HS-SCCH channel transmitting power is too high, can cause very big interference to other users, cause reducing with other users of time slot or neighbor cell user's the quality of reception; If the HS-SCCH channel transmitting power is too low, may cause the correctly information on the demodulation HS-SCCH channel of scheduled user, UE just can not receive MAC-hs (medium Access Layer) PDU (protocol Data Unit) data block, cause system resource waste, user's service rate and cell throughout all can reduce.
Summary of the invention
The purpose of this invention is to provide a kind of method and device of controlling the transmitting power of shared control channel, make it possible to control exactly the HS-SCCH channel transmitting power, the quality of reception of UE on the HS-SCCH channel both was guaranteed, also can not cause interference to system simultaneously because of the HS-SCCH channel transmitting power is excessive.
Embodiments of the invention provide a kind of method of controlling the transmitting power of shared control channel, are used for shared control channel HS-SCCH, comprising:
The scheduling resource information of base station on subscriber equipment transmission shared control channel HS-SCCH;
Judge that whether described subscriber equipment receives described scheduling resource information, obtains judged result;
Control the transmitting power of described shared control channel HS-SCCH according to described judged result.
Preferably, the described method of judging whether described subscriber equipment receives described scheduling resource information comprises: judge that described base station receives the information on the shared information channel HS-SICH that whether receives described subscriber equipment feedback, if, described judged result is that described subscriber equipment receives described scheduling resource information, does not receive described scheduling resource information otherwise described judged result is described subscriber equipment.
Preferably, the method of described transmitting power according to judged result control shared control channel HS-SCCH comprises: if described judged result is that described subscriber equipment receives described scheduling resource information, then turn down the transmitting power of described shared control channel HS-SCCH, otherwise, heighten the transmitting power of described shared control channel HS-SCCH.
Preferably, the described transmitting power of turning down described shared control channel HS-SCCH adopts following formula:
PTX
HS-SCCH(n+1)=MAX (PTX
HS-SCCH(n)-and δ, PTX
HS-SCCH(n)+and TPC ξ), wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
TPC, the power command control word TPC that on described shared information channel HS-SICH, receives for described base station;
ξ is the adjustment step-length of inner loop power control.
Preferably, the described transmitting power of heightening described shared control channel HS-SCCH adopts following formula:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
M is for losing the number of times that described shared information channel HS-SICH goes up information continuously.
Preferably, when described subscriber equipment sent scheduling resource information on the described shared control channel HS-SCCH, the transmitting power of described shared control channel HS-SCCH was with reference to the transmitting power of descending following special physical channel DPCH for the first time described base station.
On the other hand, embodiments of the invention also provide a kind of device of controlling the transmitting power of shared control channel, are used for shared control channel HS-SCCH, comprising:
Sending module is used for the scheduling resource information on subscriber equipment transmission shared control channel HS-SCCH;
Judge module is used to judge whether described subscriber equipment receives described scheduling resource information, obtains judged result; And,
Control module is used for controlling according to described judged result the transmitting power of described shared control channel HS-SCCH.
Preferably, described control module comprises: adjustment unit, be used for adjusting the transmitting power of described shared control channel HS-SCCH according to described judged result, if described judged result is that described subscriber equipment receives described scheduling resource information, then turn down the transmitting power of described shared control channel HS-SCCH, otherwise, heighten the transmitting power of described shared control channel HS-SCCH.
Preferably, described adjustment unit comprises: heighten subelement, be used for when needs are heightened the transmitting power of described shared control channel HS-SCCH, the transmitting power that described shared control channel HS-SCCH is set adopts following formula:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
M is for losing the number of times that described shared information channel HS-SICH goes up information continuously.
Preferably, described adjustment unit comprises: turn down subelement, be used for when needs are turned down the transmitting power of described shared control channel HS-SCCH, the transmitting power that described shared control channel HS-SCCH is set adopts following formula:
PTX
HS-SCCH(n+1)=MAX (PTX
HS-SCCH (N)-and δ, PTX
HS-SCCH(n)+and TPC ξ), wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n) be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
TPC, the power command control word TPC that on described shared information channel HS-SICH, receives for described base station;
ξ is the adjustment step-length of inner loop power control.
On the other hand, embodiments of the invention also provide a kind of base station, comprising: the device of the transmitting power of control shared control channel, and described device comprises:
Sending module is used for the scheduling resource information on subscriber equipment transmission shared control channel HS-SCCH;
Judge module is used to judge whether described subscriber equipment receives described scheduling resource information, obtains judged result; And,
Control module is used for controlling according to described judged result the transmitting power of described shared control channel HS-SCCH.
A technical scheme in the technique scheme has following beneficial effect: can judge accurately whether the HS-SCCH channel transmitting power is suitable, guaranteeing that UE can correctly receive on the basis of the scheduling resource information on the HS-SCCH channel, effectively reduce the HS-SCCH channel to interference, thereby improved the power system capacity and the stability of a system with other channels of time slot and neighbor cell.
Description of drawings
Fig. 1 is the method flow diagram of the transmitting power of control shared control channel in the embodiments of the invention;
Fig. 2 is the device block diagram of the transmitting power of control shared control channel in the embodiments of the invention.
Embodiment
In an embodiment of the present invention, judge at first whether UE receives the scheduling resource information on the HS-SCCH channel, obtains judged result, controls the HS-SCCH channel transmitting power according to judged result then.
Wherein this determination methods can be according to the timing relationship of HS-SCCH channel and HS-SICH channel, judge whether UE receives the scheduling resource information on the HS-SCCH channel, if Node B receives the scheduling resource information on the HS-SICH channel of UE feedback, then UE receives the scheduling resource information on the HS-SCCH channel, illustrate that the HS-SCCH channel transmitting power is enough big, can turn down the HS-SCCH channel transmitting power this moment; Otherwise UE does not receive the scheduling resource information on the HS-SCCH channel, illustrates that the HS-SCCH channel transmitting power is smaller, can not satisfy the demodulation threshold of HS-SCCH channel, and can heighten the HS-SCCH channel transmitting power this moment.
Above-mentioned demodulation threshold is the signal-noise ratio threshold that UE (receiving terminal) can correctly solve data, the size of signal to noise ratio and HS-SCCH channel transmitting power is corresponding, so control the HS-SCCH channel transmitting power in the present embodiment, will guarantee that just the demodulation threshold of HS-SCCH channel meets the demands.
In order to make those skilled in the art understand technical scheme of the present invention better, embodiments of the invention are described in further detail below in conjunction with drawings and embodiments.
As shown in Figure 1, be the method flow diagram of the transmitting power of control shared control channel in the embodiments of the invention, its concrete steps are as follows:
In the present embodiment, Node B according to dispatching algorithm (for example: the direct ratio fair scheduling algorithm) select a subscriber equipment to carry out transfer of data in a certain subframe, Node B at first sends scheduling resource information to this subscriber equipment on the HS-SCCH channel, this scheduling resource information comprises: the transformat of HS-DSCH channel, HARQ relevant information, user equipment information, SS (Synchronization Shift, synchronisation offset) and TPC.
If Node B is the scheduling resource information of the first time on UE transmission HS-SCCH channel, the value of HS-SCCH channel transmitting power can adopt the value with reference to the transmitting power of the descending DPCH of following (DPCH) at this moment, and is as follows with reference to formula:
PTX
HS-SCCH=PTX
DPCH+ Δ, wherein
PTX
DPCH, represent the descending value of following the DPCH channel transmitting power;
PTX
HS-SCCH, the value of expression HS-SCCH channel transmitting power;
Δ is represented: HS-SCCH channel transmitting power and the descending difference of following between the DPCH channel transmitting power.In the present embodiment, the value of Δ can obtain according to simulation result.
Because Node B can't obtain the downlink path loss when the scheduling resource information that sends for the first time on the HS-SCCH channel, so can't carry out open Loop Power control.But in the UE access procedure, UE can go up at RACH (Random Access Channel) and report PCCPCH (Primary Common Control Physical Channel) RSCP (received power of broadcast channel) to RNC (radio network controller), the PCCPCH RSCP calculating path loss that RNC can report according to UE is so RNC can utilize this path loss when calculating the value of the descending DPCH of following channel emission power.Because same user's path loss is the same, so the value of initial HS-SCCH channel transmitting power can be with reference to the descending value of following the DPCH channel transmitting power.
(this demodulation threshold is the signal-noise ratio threshold that receiving terminal can demodulation on the DPCH channel) may have certain difference because the demodulation threshold of the demodulation threshold of HS-SCCH channel and the descending DPCH of following channel, descending time slot disturbs also has difference, for example: in the WCDMA system, the difference that does not have descending time slot to disturb; And in the TD-SCDMA system, so HS-SCCH channel and follow the DPCH channel may be not at same descending time slot is the difference that can exist descending time slot to disturb.If when having the difference that descending time slot disturbs, can be on the descending basis of following the DPCH channel emission power power difference DELTA of compensation.
In the present embodiment, can judge whether UE receives the information on the HS-SCCH channel according to the timing relationship of HS-SCCH channel and HS-SICH channel.This timing relationship is, UE will receive MAC-hs PDU data block after receiving schedule information on the HS-SCCH channel on corresponding radio resource, delay when fixing at one then, on the HS-SICH channel to Node B feeding back ACK/nack message.Node B knows this fixed delay, so Node B knows when receive the UE feedack.
After the information on Node B transmission HS-SCCH channel, UE receives MAC-hs PDU on corresponding HS-DSCH channel, timing relationship according to HS-SCCH channel and HS-SICH channel, Node B will receive the information on the HS-SICH channel of this UE feedback at certain ascending time slot of certain subframe, if Node B has received the UE feedack, just at the ACK/NACK of HS-SICH channel to NodeB feedback MAC-hs PDU data block, illustrate that UE receives the scheduling resource information on the HS-SCCH channel, thereby explanation HS-SCCH channel transmitting power is enough big; If Node B does not receive the information on the HS-SICH channel of UE feedback, illustrate that subscriber equipment does not receive the scheduling resource information on the HS-SCCH channel, thereby illustrate that the HS-SCCH channel transmitting power is lower.
In the present embodiment, judged result is two kinds of situations, is presented in different what states below respectively and adjusts the HS-SCCH channel transmitting power.
Situation one, if judged result be that UE receives the scheduling resource information on the HS-SCCH channel, illustrate that then the HS-SCCH channel transmitting power is enough big, this moment can turn down the HS-SCCH channel transmitting power.Available following formula is adjusted:
PTX
HS-SCCH(n+1)＝MAX(PTX
HS-SCCH(n)-δ，PTX
HS-SCCH(n)+TPC·ξ)
PTX
HS-SCCH(n+1) expression: the value of (n+1) inferior HS-SCCH channel transmitting power;
PTX
HS-SCCH(n) expression: the value of the n time HS-SCCH channel transmitting power;
δ represents: adjust step-length according to the power that the timing relationship of HS-SICH channel and HS-SCCH channel is judged, δ can obtain a proper size by emulation, such as: 0.5dB;
TPC represents: the TPC command word that Node B receives on the HS-SICH channel;
ξ represents: common inner loop power control step-length, general value is 1dB, requires δ＜ξ.
Situation two, if judged result be that UE does not receive the scheduling resource information on the HS-SCCH channel, illustrate that then the HS-SCCH channel transmitting power is smaller, can not satisfy the demodulation threshold of HS-SCCH channel, this moment need heighten the HS-SCCH channel transmitting power.
In above-mentioned second kind of situation, do not receive scheduling resource information on the HS-SCCH channel when determining UE, just Node B does not receive the information on the HS-SICH channel of UE feedback, exist this moment two kinds may:
(1) UE has received the scheduling resource information on the HS-SCCH channel, UE has also fed back the information on the HS-SICH channel, but Node B does not receive the information on the HS-SICH channel of feedback, for this situation, because ACK/NACK adopts the 36bit repeated encoding, coding gain is 101g (36)=15.56dB, so the desired demodulation threshold of HS-SICH channel is very low, the general requirement of the BLER (Block Error Rate) of HS-SICH channel is 10 simultaneously
-3～10
-4, therefore can ignore for this situation.
(2) UE does not receive the scheduling resource information on the HS-SCCH channel, thereby explanation HS-SCCH channel transmitting power is smaller, can not satisfy the demodulation threshold of HS-SCCH channel.Heighten the HS-SCCH channel transmitting power according to above-mentioned analysis needs, available following formula is adjusted:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1), the value of expression (n+1) inferior HS-SCCH channel transmitting power;
PTX
HS-SCCH(n), the value of representing the n time HS-SCCH channel transmitting power;
δ represents: adjust step-length according to the power that HS-SICH channel and HS-SCCH channel timing relationship are judged, δ can obtain a proper size by emulation, such as 0.5dB;
M represents: lose the number of times of the information on the HS-SICH channel continuously, the continuous message that does not receive on the HS-SICH channel for m time of expression Node B.If Node B after the information of losing on the HS-SICH channel for m time continuously, has received the information on the HS-SICH channel that UE feeds back, then need m is reset to 0.
Can judge accurately by above-mentioned technology whether the HS-SCCH channel emission power is suitable, and can be in conjunction with the fine adjustment function of inner loop power control, guaranteeing that UE can correctly receive on the basis of the information on the HS-SCCH channel, with low HS-SCCH channel to interference with other channels of time slot and neighbor cell, thereby improved the power system capacity and the stability of a system.
Embodiments of the invention also provide a kind of device that is used to cooperate the described method of the embodiment of the invention, describe below in conjunction with Fig. 2.What need at first explanation in addition is; because following embodiment is for realizing said method embodiment; so the module in this device all is to establish in order to realize each step in the said method; but embodiments of the invention are not limited to following embodiment, and any device of said method of realizing all should be contained in protection scope of the present invention.
Referring to Fig. 2, be the device block diagram of the transmitting power of the control shared control channel of embodiments of the invention, by among the figure as can be known, this device comprises:
Sending module 21, be used for the scheduling resource information on subscriber equipment (not shown) transmission HS-SCCH channel, this scheduling resource information comprises: the transformat of HS-DSCH channel, HARQ relevant information, user equipment information, SS (Synchronization Shift, synchronisation offset) and TPC;
Pass through said apparatus, can judge accurately whether the HS-SCCH channel emission power is suitable, guaranteeing that UE can correctly receive on the basis of the information on the HS-SCCH channel, effectively turn down the HS-SCCH channel to interference, thereby improved the power system capacity and the stability of a system with other channels of time slot and neighbor cell.
In another embodiment of the present invention, above-mentioned judge module 22 comprises: judging unit 221, be connected with sending module 21, be used for whether receiving information (just at the ACK/NACK of HS-SICH channel) on the HS-SICH channel of subscriber equipment feedback to Node B feedback MAC-hs PDU data block according to the base station, judge whether subscriber equipment receives the scheduling resource information on the HS-SCCH channel, if subscriber equipment receives the scheduling resource information on the HS-SCCH channel; Otherwise subscriber equipment does not receive the scheduling resource information on the HS-SCCH channel.
In another embodiment of the present invention, above-mentioned control module 23 comprises: adjustment unit 231, be connected with judge module 22, be used for adjusting the HS-SCCH channel transmitting power according to judged result, if described judged result is that subscriber equipment receives the scheduling resource information on the HS-SCCH channel, then turn down the HS-SCCH channel transmitting power, otherwise, heighten the HS-SCCH channel transmitting power.
In another embodiment of the present invention, above-mentioned adjustment unit 231 comprises: heighten subelement 2311, be used for the HS-SCCH channel transmitting power being set adopting following formula when needs are heightened the HS-SCCH channel transmitting power:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1) be the value of (n+1) inferior HS-SCCH channel transmitting power;
PTX
HS-SCCH(n) be the value of the n time HS-SCCH channel transmitting power;
δ adjusts step-length according to the power that the timing relationship of HS-SICH channel and HS-SCCH channel is judged, δ can obtain a proper size by emulation, such as: 0.5dB;
M represents: lose the number of times of the information on the HS-SICH channel continuously, the continuous information that does not receive on the HS-SICH channel for m time of expression Node B.If Node B after the information of losing on the HS-SICH channel for m time continuously, has received the information on the HS-SICH channel that UE feeds back, then need m is reset to 0.
In another embodiment of the present invention, above-mentioned adjustment unit 231 also comprises: turn down subelement 2312, be used for the HS-SCCH channel transmitting power being set adopting following formula when needs are turned down the HS-SCCH channel transmitting power:
PTX
HS-SCCH(n+1)=MAX (PTX
HS-SCCH(n)-and δ, PTX
HS-SCCH(n)+and TPC ξ), wherein
PTX
HS-SCCH(n+1) be the value of (n+1) inferior HS-SCCH channel transmitting power;
PTX
HS-SCCH(n) be the value of the n time HS-SCCH channel transmitting power;
δ represents: adjust step-length according to the power that the timing relationship of HS-SICH channel and HS-SCCH channel is judged, δ can obtain a proper size by emulation, such as: 0.5dB;
TPC represents: the TPC command word that Node B receives on the HS-SICH channel.
ξ represents: common inner loop power control step-length, general value is 1dB.
A kind of base station also is provided in an embodiment of the present invention, and this base station comprises the device of the transmitting power of controlling shared control channel, and the structure of this device is no longer applied at this and to be stated as shown in Figure 2.
As shown from the above technical solution, can rapid adjustment HS-SCCH channel transmitting power at present embodiment, according to the timing relationship of HS-SICH channel and HS-SCCH channel, judge accurately whether the HS-SCCH channel transmitting power is suitable.And fine adjustment function in conjunction with common inner loop power control, guaranteeing that UE can correctly receive on the basis of the scheduling resource information on the HS-SCCH channel, reduce the HS-SCCH channel simultaneously to interference with other channels of time slot and neighbor cell, thereby can accomplish more effective, quicker, more accurate power adjustment, thereby customer service speed and cell throughout have been guaranteed, effectively reduce system interference simultaneously, improve the power system capacity and the stability of a system.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (11)
1. a method of controlling the transmitting power of shared control channel is used for shared control channel HS-SCCH, it is characterized in that, comprising:
The scheduling resource information of base station on subscriber equipment transmission shared control channel HS-SCCH;
Judge that whether described subscriber equipment receives described scheduling resource information, obtains judged result;
Control the transmitting power of described shared control channel HS-SCCH according to described judged result.
2. method according to claim 1 is characterized in that, the described method of judging whether described subscriber equipment receives described scheduling resource information comprises:
Judge that described base station receives the information on the shared information channel HS-SICH that whether receives described subscriber equipment feedback, if, described judged result is that described subscriber equipment receives described scheduling resource information, does not receive described scheduling resource information otherwise described judged result is described subscriber equipment.
3. method according to claim 1 is characterized in that, the method for described transmitting power according to judged result control shared control channel HS-SCCH comprises:
If described judged result is that described subscriber equipment receives described scheduling resource information, then turn down the transmitting power of described shared control channel HS-SCCH, otherwise, heighten the transmitting power of described shared control channel HS-SCCH.
4. method according to claim 3 is characterized in that, the described transmitting power of turning down described shared control channel HS-SCCH adopts following formula:
PTX
HS-SCCH(n+1)=MAX (PTX
HS-SCCH(n)-and δ, PTX
HS-SCCH(n)+and TPC ξ), wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
TPC, the power command control word TPC that on described shared information channel HS-SICH, receives for described base station;
ξ is the adjustment step-length of inner loop power control.
5. method according to claim 3 is characterized in that, the described transmitting power of heightening described shared control channel HS-SCCH adopts following formula:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
M is for losing the number of times that described shared information channel HS-SICH goes up information continuously.
6. method according to claim 1, it is characterized in that, when described subscriber equipment sent scheduling resource information on the described shared control channel HS-SCCH, the transmitting power of described shared control channel HS-SCCH was with reference to the transmitting power of descending following special physical channel DPCH for the first time for described base station.
7. a device of controlling the transmitting power of shared control channel is used for shared control channel HS-SCCH, it is characterized in that, comprising:
Sending module is used for the scheduling resource information on subscriber equipment transmission shared control channel HS-SCCH;
Judge module is used to judge whether described subscriber equipment receives described scheduling resource information, obtains judged result; And,
Control module is used for controlling according to described judged result the transmitting power of described shared control channel HS-SCCH.
8. device according to claim 7 is characterized in that, described control module comprises:
Adjustment unit, be used for adjusting the transmitting power of described shared control channel HS-SCCH according to described judged result, if described judged result is that described subscriber equipment receives described scheduling resource information, then turn down the transmitting power of described shared control channel HS-SCCH, otherwise, heighten the transmitting power of described shared control channel HS-SCCH.
9. device according to claim 8 is characterized in that, described adjustment unit comprises:
Heighten subelement, be used for when needs are heightened the transmitting power of described shared control channel HS-SCCH, the transmitting power that described shared control channel HS-SCCH is set adopts following formula:
PTX
HS-SCCH(n+1)=PTX
HS-SCCH(n)+2
mδ, wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n), be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
M is for losing the number of times that described shared information channel HS-SICH goes up information continuously.
10. device according to claim 8 is characterized in that, described adjustment unit comprises:
Turn down subelement, be used for when needs are turned down the transmitting power of described shared control channel HS-SCCH, the transmitting power that described shared control channel HS-SCCH is set adopts following formula:
PTX
HS-SCCH(n+1)=MAX (PTX
HS-SCCH(n)-and δ, PTX
HS-SCCH(n)+and TPC ξ), wherein
PTX
HS-SCCH(n+1), be the value of the transmitting power of (n+1) inferior shared control channel HS-SCCH;
PTX
HS-SCCH(n) be the value of the transmitting power of the n time shared control channel HS-SCCH;
δ is for power is adjusted step-length;
TPC, the power command control word TPC that on described shared information channel HS-SICH, receives for described base station;
ξ is the adjustment step-length of inner loop power control.
11. a base station comprises the device of the transmitting power of controlling shared control channel it is characterized in that described device comprises:
Sending module is used for the scheduling resource information on subscriber equipment transmission shared control channel HS-SCCH;
Judge module is used to judge whether described subscriber equipment receives described scheduling resource information, obtains judged result; And,
Control module is used for controlling according to described judged result the transmitting power of described shared control channel HS-SCCH.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264123A (en) * | 2010-05-26 | 2011-11-30 | 电信科学技术研究院 | Method and device for distributing PDSCH (physical downlink shared channel) power |
| CN102655656A (en) * | 2011-03-02 | 2012-09-05 | 鼎桥通信技术有限公司 | High speed downlink link packet access (HSDLPA) scheduling method, device and base station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100892312B1 (en) * | 2002-01-05 | 2009-04-08 | 엘지전자 주식회사 | Method for controlling transmission power of HS-SCCH in mobile communication system |
| JP4288093B2 (en) * | 2003-04-09 | 2009-07-01 | 株式会社エヌ・ティ・ティ・ドコモ | Wireless communication control system and wireless communication control method |
| CN100373806C (en) * | 2005-11-02 | 2008-03-05 | 中兴通讯股份有限公司 | High speed shared control channels and method for realizing high speed shared information channel power |
| CN100499392C (en) * | 2006-03-20 | 2009-06-10 | 中兴通讯股份有限公司 | Process for configuring power controlling parameter of high-speed sharing channel in TD-SCDMA system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102264123A (en) * | 2010-05-26 | 2011-11-30 | 电信科学技术研究院 | Method and device for distributing PDSCH (physical downlink shared channel) power |
| CN102264123B (en) * | 2010-05-26 | 2014-07-23 | 电信科学技术研究院 | Method and device for distributing PDSCH (physical downlink shared channel) power |
| CN102655656A (en) * | 2011-03-02 | 2012-09-05 | 鼎桥通信技术有限公司 | High speed downlink link packet access (HSDLPA) scheduling method, device and base station |
| CN102655656B (en) * | 2011-03-02 | 2015-02-04 | 鼎桥通信技术有限公司 | High speed downlink link packet access (HSDLPA) scheduling method, device and base station |
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