CN101247147A - Power control method of physical channel mapped by high speed descending sharing channel - Google Patents

Power control method of physical channel mapped by high speed descending sharing channel Download PDF

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CN101247147A
CN101247147A CN 200710079258 CN200710079258A CN101247147A CN 101247147 A CN101247147 A CN 101247147A CN 200710079258 CN200710079258 CN 200710079258 CN 200710079258 A CN200710079258 A CN 200710079258A CN 101247147 A CN101247147 A CN 101247147A
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pdsch
channel
scch
power level
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CN101247147B (en
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柯雅珠
程翔
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ZTE Corp
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Abstract

The invention discloses a method for controlling the power of the physical channel mapped by the high-speed descending sharing channel, and the method comprises the following procedures: (a) calculating the emitting power level needed for transmitting the data unit by the wireless network controller according to the measuring reported value reported by the user facility and the size dimension of the data unit of the medium access control protocol, and carrying the emitting power level in the data frame of the high-speed descending sharing channel for transmitting to the base station; and (b) when the base station transmits data to the user facility, confirming the emitting power of the high-speed descending sharing channel by the base station according to the emitting power level, and transmitting the signaling and/or data in the high-speed descending sharing channel with the assured emitting power. The adopting of the method facilitates that the base station can transmits data to the user facility in the common condition of the strengthening connecting mode. The correct receiving of the user facility is guaranteed and at the same time the capability of the system is increased.

Description

A kind of Poewr control method of physical channel mapped by high speed descending sharing channel
Technical field
The present invention relates to a kind of Poewr control method of strengthening the physical channel mapped by high speed descending sharing channel under the connection mode common condition in the mobile communication system.
Background technology
In order to improve the throughput of high data traffic of user and system, the R5 standard agreement of 3GPP has been introduced a kind of high-speed packet and has been shared transmission channel (High Speed Downlink Shared Channel:HS-DSCH), the physical channel that this channel shone upon adopts time-division and sign indicating number branch mode, and this channel has adopted and has mixed (HARQ) and Adaptive Modulation and Coding (AMC) technology of retransmitting automatically, makes peak rate can reach 10.8Mbps～30Mbps.Its final purpose is by providing high speed packet service to be inserted the capacity that increases system and reduces transmission delay to improve the requirement of user to service quality (QoS).
Agreement is to use Secondary Common Control Physical Channel (S-CCPCH) to carry out the transmission of signaling and data for the subscriber equipment of the front access state (CELL_FACH) under Radio Resource control (RRC) connection mode at present, the subscriber equipment of the paging state (CELL_PCH/URA_PCH) under Radio Resource control (RRC) connection mode is to use Secondary Common Control Physical Channel (S-CCPCH) to carry out the reception of beep-page message, based on the S-CCPCH channel is channel shared by multiple users, the function that does not have closed-loop power control, therefore in order to guarantee that the user who covers the edge also can correctly receive signaling and data, the ratio that its power will be provided with is higher, therefore for reduce CELL_FACH and (or) the shared power resource of CELL_PCH/URA_PCH state, the bandwidth of S-CCPCH has certain restriction.
Can by be increased in CELL_FACH and (or) the CELL_PCH/URA_PCH state uses high speed shared channels, improve effective peak speed and reduce the time-delay that signaling CELL_FACH, CELL_PCH, URA_PCH state is under delayed time and reduced state exchange.Therefore the 3GPP consensus standard to Radio Resource control (RRC) connection mode down front access state (CELL_FACH) and (or) paging state (CELL_PCH/URA_PCH) controlled under (RRC) connection mode of Radio Resource strengthens, promptly CELL_FACH and (or) the CELL_PCH/URA_PCH state also can use the high speed shared channels technology (this paper is in CELL-FACH and (or) CELL_PCH/URA_PCH state use the ability of high speed shared channels to abbreviate as strengthen the connection mode common condition), short time interval by the high speed shared channels technology, HARQ and AMC mechanism improve the effective peak speed of strengthening the connection mode common condition.The shared control channel (HS-SCCH) that the public physic channel relevant with high speed shared channels has high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) and use for high speed descending sharing channel, the physical channel of sharing for the high speed that guarantees to strengthen the connection mode common condition can operate as normal, need carry out power control to these two physical channels.
Yet, at the subscriber equipment of CELL_FACH and/or CELL_PCH/URA_PCH state, also these two physical channels are not carried out the method that power is controlled at present.
Summary of the invention
Technical problem to be solved by this invention provides a kind of Poewr control method of physical channel mapped by high speed descending sharing channel, a kind of relevant physical channel Poewr control method of high speed descending sharing channel under the connection mode common condition of strengthening is provided, make the base station can use suitable power to send when the subscriber equipment of strengthening under the connection mode common condition sends data, guarantee the correct reception of subscriber equipment for being in.
In order to solve the problems of the technologies described above, the invention provides a kind of Poewr control method of physical channel mapped by high speed descending sharing channel, may further comprise the steps:
(a) radio network controller calculates according to the size of the measurement report values of user equipment to report, media access control protocol data unit and sends the needed transmit power level of this data cell, and carries this transmit power level send to the base station in the Frame of high speed descending sharing channel;
When (b) base station sent data to subscriber equipment, the transmitting power of high speed descending sharing channel was determined according to this transmit power level in the base station, and used the transmitting power of determining to send signaling and/or data on high speed descending sharing channel.
Further, said method also can comprise following characteristics: in described step (a), the needed transmit power level of this data cell of described transmission is meant spendable first transmit power level when control channel HS-SCCH that is used for high speed descending sharing channel and one or more high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transmit these data; In described step (b), when the base station sends data to subscriber equipment, distribute to total transmitting power of HS-SCCH and HS-PDSCH according to first transmit power level size decision of media access control protocol data unit, according to the power division ratio of HS-SCCH and HS-PDSCH, determine the transmitting power of HS-SCCH and HS-PDSCH.
Further, said method also can comprise following characteristics: in described step (a), the needed transmit power level of this data cell of described transmission is meant spendable second transmit power level of one or more HS-PDSCH; In described step (b), the transmitting power of HS-PDSCH is distributed in the base station according to second transmit power level size decision of media access control protocol data unit, according to the power division ratio of HS-SCCH and HS-PDSCH, determine the transmitting power of HS-SCCH then.
Further, said method also can comprise following characteristics: in described step (a), subscriber equipment is by the cell update request message, wireless resource control connection request message or measurement report message report its measurement result to Common Pilot Channel to radio network controller, described measurement result is the signal interference ratio of Common Pilot Channel or the received signal intensity or the path loss of Common Pilot Channel, when the signal interference ratio of described Common Pilot Channel big more, perhaps the received signal intensity when Common Pilot Channel is strong more, perhaps the processing gain of HS-PDSCH and HS-SCCH is big more, and then this moment, needed transmit power level was more little; When path loss big more, perhaps when the size of media access control protocol data unit big more, then this moment, needed transmit power level was also big more.
Further, said method also can comprise following characteristics: in described step (a), the computing formula of first transmit power level of HS-SCCH and HS-PDSCH is as follows:
TPL = 2 ( L + [ N T + ( 1 - γ + i ) × Load / L - CpichPower ] ) - PG 1 - PG 2 + E b N O hspdsch + E b N O hsscch
Wherein: TPL is first transmit power level, and L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, and CpichPower is the transmitting power of Common Pilot Channel, E b/ N oBe signal interference ratio, PG1 is the processing gain of HS-PDSCH channel, and PG2 is the processing gain of HS-SCCH channel.
Further, said method also can comprise following characteristics: described processing gain equals the ratio of bandwidth and service rate, the processing gain PG1=W/R of described HS-PDSCH channel, wherein, W=3.84M, MacPduSize is the size of protocol Data Unit relevant in the Frame, the processing gain PG2=W/128 of described HS-SCCH channel.
Further, said method also can comprise following characteristics: in described step (b), total transmitting power of described HS-SCCH and HS-PDSCHs is Common Pilot Channel transmitting power and the described first transmit power level sum.
Further, said method also can comprise following characteristics: in described step (a), the computing formula of second transmit power level of described HS-PDSCH is as follows:
TPL = L + [ N T + ( 1 - γ + i ) × Load / L ] - PG + E b N O hspdsch - CpichPower
Wherein: TPL is second transmit power level, and L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, E b/ N oBe signal interference ratio, PG is the processing gain of HS-PDSCH channel, PG=W/R, wherein, W=3.84M,
Figure A20071007925800083
MacPduSize is the size of protocol Data Unit relevant in the Frame, and CpichPower is the transmitting power of Common Pilot Channel.
Further, said method also can comprise following characteristics: in described step (b), total transmitting power of described HS-PDSCH is Common Pilot Channel transmitting power and the described second transmit power level sum.
Further, said method also can comprise following characteristics: the power division ratio of described HS-SCCH and HS-PDSCH is to determine according to HS-SCCH and HS-PDSCH institute data carried by data bit, spreading gain, significance level.
Further, said method also can comprise following characteristics: described power division ratio is the ratio of the spreading factor of the two and the product of weight.
Further, said method also can comprise following characteristics: when HS-PDSCH has many, give every HS-PDSCH with HS-PDSCH channel transmitting power mean allocation.
Further, said method also can comprise following characteristics: in described step (b), if having a plurality of data blocks to be multiplexed in the media access control protocol data unit in a Transmission Time Interval is sent out, then the HS-SCCH channel transmitting power is got the maximum of a plurality of data block transmitting powers, the HS-PDSCH channel transmitting power is got the transmitting power sum of these a plurality of data blocks, and the transmitting power sum of HS-SCCH and HS-PDSCHs is smaller or equal to described maximum transmission power and Common Pilot Channel transmitting power sum.
The invention provides a kind of relevant physical channel Poewr control method of high speed descending sharing channel under the connection mode common condition of strengthening, make the base station can use suitable power to send when the subscriber equipment of strengthening under the connection mode common condition sends data for being in, guarantee the correct reception of subscriber equipment, improved the capacity of system simultaneously.
Description of drawings
Fig. 1 is the Poewr control method flow chart of first embodiment of the invention HS-PDSCH and HS-SCCH;
Fig. 2 is the Poewr control method flow chart of second embodiment of the invention HS-PDSCH and HS-SCCH.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
Fig. 1 is for strengthening the embodiment 1 of the physical channel Poewr control method that high speed shared channels is relevant under the connection mode common condition.
Step 110, subscriber equipment are passed through cell update request message, wireless resource control connection request message or measurement report message to its measurement result to Common Pilot Channel of wireless network controller reporting;
Measurement result to Common Pilot Channel is: the received signal intensity (RSCP) of signal interference ratio of Common Pilot Channel (Ec/N0) or Common Pilot Channel or path loss (pathloss).
Step 120, when the data that need transmit subscriber equipment when radio network controller are given the base station, calculate HS-SCCH and HS-PDSCH (1 or many) spendable transmit power level when transmitting these data according to the size of the measurement report values of user equipment to report, media access control protocol data unit, and in the Frame of high speed descending sharing channel, carry transmit power level and send to the base station;
Described transmit power level correctly receives the deviation of needed minimum emissive power of data and above-mentioned maximum transmission power for the present present position of user, in other words, just user's current location with respect to the deviation that correctly receives the needed transmitting power of data at cell edge.Near more needed transmitting power is more little from the base station for subscriber equipment, and the transmit power level that obtains thus is a negative value, and when subscriber equipment was in cell edge, this transmit power level then got zero.
Radio network controller can be determined transmit power level by the following method, but be not limited to this: by subscriber equipment at the measurement report that inserts the Common Pilot Channel that reports radio network controller on the transmission channel at random, such as the signal interference ratio (CPICH_Ec/N0) of Common Pilot Channel or the received signal intensity (RSCP) or the path loss (pathloss) of Common Pilot Channel, and the size of media access control protocol data unit is determined the needed transmit power level of this data cell.When the signal interference ratio of Common Pilot Channel big more, perhaps when the received signal intensity of Common Pilot Channel strong more, show that subscriber equipment is near more apart from the base station, then this moment, needed transmit power level was more little; When path loss is big more, illustrate that subscriber equipment is far away more apart from the base station, perhaps the size when media access control protocol data unit is big more, and then this moment, needed transmit power level was also big more.In addition, transmit power level also has relation with processing gain, and the processing gain of HS-PDSCH and HS-SCCH is big more, and transmit power level is more little.
Described transmit power level is used for determining total transmitting power of HS-SCCH and one or more HS-PDSCH, is example with the path loss, and the computational methods of transmit power level (TPL) are as follows:
TPL = 2 ( L + [ N T + ( 1 - γ + i ) × Load / L - CpichPower ] ) - PG 1 - PG 2 + E b N O hspdsch + E b N O hsscch
Wherein: L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, E b/ N oBe signal interference ratio, PG1 is the processing gain of HS-PDSCH physical channel, PG1=W/R (ratio of bandwidth and service rate), wherein, W=3.84M,
Figure A20071007925800102
Figure A20071007925800103
Round in the expression, PG2 is the processing gain of HS-SCCH physical channel, and PG2=W/128, MacPduSize are the sizes of protocol Data Unit relevant in the Frame, and CpichPower is the transmitting power of Common Pilot Channel.
Step 130, when the base station sends data to subscriber equipment, distribute to total transmitting power of HS-SCCH and HS-PDSCH according to the transmit power level size decision of media access control protocol data unit, distribute to the power division ratio of HS-SCCH and HS-PDSCHs then according to HS-SCCH and HS-PDSCH institute data carried by data bit, spreading gain, significance level decision, thereby finally determine the transmitting power of HS-SCCH and HS-PDSCHs, the base station uses the transmitting power of determining to send signaling and/or data respectively on HS-SCCH and HS-PDSCH.
Concrete computational methods are as follows, but are not limited to this:
Total transmitting power of HS-SCCH and HS-PDSCHs:
TransmitPowerforHs＝TPL+CpichPower
The base station is as follows according to the transmitting power ratio method of TransmitPowerforHs decision HS-SCCH and HS-PDSCH:
TransimtPowerforHsscch TransimtPowerforHsPdsch = 1 N × 16 128 × α
Wherein: N is a HS-PDSCH physical channel bar number, if modulation system is QPSK, then
Figure A20071007925800112
Figure A20071007925800113
If modulation system is 16QAM, then Wherein, MachsPduSize is the protocol Data Unit size that MAC-hs will send, and 16 is the spreading factor of HS-PDSCH; 128 is the spreading factor of HS-SCCH, and α is the significance level weight, more than or equal to 1.
As seen, when HS-PDSCH has only one, and weight equals at 1 o'clock, and HS-SCCH is the ratio of the spreading factor of the two with the power division ratio of HS-PDSCH.
Fig. 2 is for strengthening the embodiment 2 of the physical channel Poewr control method that high speed shared channels is relevant under the connection mode common condition.
Step 210, subscriber equipment are passed through cell update request message, wireless resource control connection request message or measurement report message to its measurement result to Common Pilot Channel of wireless network controller reporting;
Measurement result to Common Pilot Channel is: the received signal intensity (RSCP) of signal interference ratio of Common Pilot Channel (Ec/N0) or Common Pilot Channel or path loss (pathloss).
Step 220, when the data that need transmit subscriber equipment when radio network controller are given the base station, size according to the measurement report values of reporting of user, media access control protocol data unit is calculated the spendable transmit power level of HS-PDSCHs, and carries transmit power level send to the base station in the Frame at high speed descending sharing channel;
When described transmit power level was used for determining the total transmitting power of one or more HS-PDSCH, the computational methods of transmit power level (TPL) were as follows:
TPL = L + [ N T + ( 1 - γ + i ) × Load / L ] - PG + E b N O hspdsch - CpichPower
Wherein: L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, E b/ N oBe signal interference ratio, PG is the processing gain of HS-PDSCH channel, and PG equals the ratio W/R of bandwidth and service rate, wherein, and W=3.84M,
Figure A20071007925800122
Figure A20071007925800123
Round in the expression, MacPduSize is the size of protocol Data Unit relevant in the Frame, and CpichPower is the transmitting power of Common Pilot Channel.
Step 230, when the base station sends data to subscriber equipment, distribute to the transmitting power of HS-PDSCHs according to the transmit power level size decision of media access control protocol data unit, distribute to the power division ratio of HS-SCCH and HS-PDSCHs then according to HS-SCCH and HS-PDSCH institute data carried by data bit, spreading gain, significance level decision, thereby determine the transmitting power of HS-SCCH, the base station use the transmitting power of determining on HS-SCCH and HS-PDSCH, send respectively signaling and/data.
The transmitting power of HS-PDSCHs is distributed in the base station according to the transmit power level size decision of media access control protocol data unit, distribute to the power division ratio of HS-SCCH and HS-PDSCHs according to HS-SCCH and HS-PDSCH institute data carried by data bit, spreading gain, significance level decision then, thereby determine the transmitting power of HS-SCCH.
Concrete computational methods are as follows, but are not limited to this:
Total transmitting power TransmitPowerforHspdsch=TPL+CpichPower base station of HS-PDSCHs determines the transmitting power of HS-SCCH according to TransmitPowerforHspdsch:
TransimtPowerforHsscch TransimtPowerforHsPdsch = 1 N × 16 128 × α
Wherein: N is a HS-PDSCH physical channel bar number, if modulation system is QPSK, then
Figure A20071007925800132
Figure A20071007925800133
If modulation system is 16QAM, then
Figure A20071007925800134
MachsPduSize is the protocol Data Unit size that MAC-hs will send.
If having the data block of a plurality of MAC-c/sh/m to be multiplexed in the media access control protocol data unit in a Transmission Time Interval of the medium access control entity (MAC-hs) of high speed descending sharing channel is sent out, then the transmitting power of HS-SCCH is got the maximum of a plurality of data blocks, HS-PDSCH gets the transmitting power sum of these a plurality of data blocks, and the transmitting power sum of HS-SCCH and HS-PDSCHs can not surpass the relevant spendable maximum transmission power of physical channel of high speed descending sharing channel.
For a MAC-hs pdu, a Transmission Time Interval only needs a HS-SCCH, and HS-PDSCH can be for one or more of at a Transmission Time Interval.If HS-PDSCH is many, then can on the transmitting power basis of determining, mean allocation arrive every physical channel.
The invention provides a kind of relevant physical channel Poewr control method of high speed descending sharing channel under the connection mode common condition of strengthening, so that the base station can use suitable power to send for being in when the subscriber equipment of strengthening under the connection mode common condition sends data, guarantee the correct reception of subscriber equipment and the capacity of raising system.

Claims (13)

1. the Poewr control method of a physical channel mapped by high speed descending sharing channel may further comprise the steps:
(a) radio network controller calculates according to the size of the measurement report values of user equipment to report, media access control protocol data unit and sends the needed transmit power level of this data cell, and carries this transmit power level send to the base station in the Frame of high speed descending sharing channel;
When (b) base station sent data to subscriber equipment, the transmitting power of high speed descending sharing channel was determined according to this transmit power level in the base station, and used the transmitting power of determining to send signaling and/or data on high speed descending sharing channel.
2. the method for claim 1, it is characterized in that, in described step (a), the needed transmit power level of this data cell of described transmission is meant spendable first transmit power level when control channel HS-SCCH that is used for high speed descending sharing channel and one or more high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH transmit these data; In described step (b), when the base station sends data to subscriber equipment, distribute to total transmitting power of HS-SCCH and HS-PDSCH according to first transmit power level size decision of media access control protocol data unit, according to the power division ratio of HS-SCCH and HS-PDSCH, determine the transmitting power of HS-SCCH and HS-PDSCH.
3. the method for claim 1 is characterized in that, in described step (a), the needed transmit power level of this data cell of described transmission is meant spendable second transmit power level of one or more HS-PDSCH; In described step (b), the transmitting power of HS-PDSCH is distributed in the base station according to second transmit power level size decision of media access control protocol data unit, according to the power division ratio of HS-SCCH and HS-PDSCH, determine the transmitting power of HS-SCCH then.
4. as claim 2 or 3 described methods, it is characterized in that, in described step (a), subscriber equipment is by the cell update request message, wireless resource control connection request message or measurement report message report its measurement result to Common Pilot Channel to radio network controller, described measurement result is the signal interference ratio of Common Pilot Channel or the received signal intensity or the path loss of Common Pilot Channel, when the signal interference ratio of described Common Pilot Channel big more, perhaps the received signal intensity when Common Pilot Channel is strong more, perhaps the processing gain of HS-PDSCH and HS-SCCH is big more, and then this moment, needed transmit power level was more little; When path loss big more, perhaps when the size of media access control protocol data unit big more, then this moment, needed transmit power level was also big more.
5. method as claimed in claim 2 is characterized in that, in described step (a), the computing formula of first transmit power level of HS-SCCH and HS-PDSCH is as follows:
TPL = 2 ( L + [ N T + ( 1 - γ + i ) × Load / L - CpichPower ] ) - PG 1 - PG 2 + E b N O hspdsch + E b N O hsscch
Wherein: TPL is first transmit power level, and L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, and CpichPower is the transmitting power of Common Pilot Channel, E b/ N oBe signal interference ratio, PG1 is the processing gain of HS-PDSCH channel, and PG2 is the processing gain of HS-SCCH channel.
6. method as claimed in claim 5 is characterized in that described processing gain equals the ratio of bandwidth and service rate, the processing gain PG1=W/R of described HS-PDSCH channel, wherein, W=3.84M,
Figure A2007100792580003C2
MacPduSize is the size of protocol Data Unit relevant in the Frame, the processing gain PG2=W/128 of described HS-SCCH channel.
7. method as claimed in claim 5 is characterized in that, in described step (b), total transmitting power of described HS-SCCH and HS-PDSCHs is Common Pilot Channel transmitting power and the described first transmit power level sum.
8. method as claimed in claim 3 is characterized in that, in described step (a), the computing formula of second transmit power level of described HS-PDSCH is as follows:
TPL = L + [ N T + ( 1 - γ + i ) × Load / L ] - PG + E b N O hspdsch - CpichPower
Wherein: TPL is second transmit power level, and L is the path loss of user equipment to report, N TBe noise power, γ is a nonorthogonal factor, and i is the interference factor of neighbor cell, and Load is the load of current area, E b/ N oBe signal interference ratio, PG is the processing gain of HS-PDSCH channel, PG=W/R, wherein, W=3.84M,
Figure A2007100792580003C4
MacPduSize is the size of protocol Data Unit relevant in the Frame, and CpichPower is the transmitting power of Common Pilot Channel.
9. method as claimed in claim 8 is characterized in that, in described step (b), total transmitting power of described HS-PDSCH is Common Pilot Channel transmitting power and the described second transmit power level sum.
10. as claim 2 or 3 described methods, it is characterized in that the power division ratio of described HS-SCCH and HS-PDSCH is to determine according to HS-SCCH and HS-PDSCH institute data carried by data bit, spreading gain, significance level.
11. method as claimed in claim 10 is characterized in that, described power division ratio is the ratio of spreading factor of the two and the product of weight.
12. as claim 2 or 3 described methods, it is characterized in that, when HS-PDSCH has many, give every HS-PDSCH with HS-PDSCH channel transmitting power mean allocation.
13. as claim 2 or 3 described methods, it is characterized in that, in described step (b), if having a plurality of data blocks to be multiplexed in the media access control protocol data unit in a Transmission Time Interval is sent out, then the HS-SCCH channel transmitting power is got the maximum of a plurality of data block transmitting powers, the HS-PDSCH channel transmitting power is got the transmitting power sum of these a plurality of data blocks, and the transmitting power sum of HS-SCCH and HS-PDSCHs is smaller or equal to described maximum transmission power and Common Pilot Channel transmitting power sum.
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CN109275182B (en) * 2013-06-14 2021-10-01 华为技术有限公司 Notification method and device of downlink power distribution parameters
WO2015013893A1 (en) * 2013-07-30 2015-02-05 华为技术有限公司 Method and device for obtaining downlink quality information
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