CN100518005C - Transmission method of inner ring power control instruction in interior of base station - Google Patents
Transmission method of inner ring power control instruction in interior of base station Download PDFInfo
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- CN100518005C CN100518005C CNB2005100826309A CN200510082630A CN100518005C CN 100518005 C CN100518005 C CN 100518005C CN B2005100826309 A CNB2005100826309 A CN B2005100826309A CN 200510082630 A CN200510082630 A CN 200510082630A CN 100518005 C CN100518005 C CN 100518005C
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Abstract
This invention discloses a transmission method with the inner ring power control instruction in the base station including pre-designing a control logic unit and a corresponding relation between the up ID and the down ID of the wireless link in it, in which, the up baseband process unit generates TPCI based on the SIR and SIR Target of the received up special physical channel and demodulates TPC2 from the special physical channel and sends said TPC1, TPC2 and the up ID to the control logic unit, which gets the down ID based on the up ID and the corresponding relation and binds it with said YPC1 and TPC2 to send them to the down baseband process unit, which controls power of the down special physical channel and modulates the TPC1 to it.
Description
Technical field
The present invention relates to the inner loop power control field of 3-G (Generation Three mobile communication system), particularly a kind of power control instruction is at the transmission method of inside of base station.
Background technology
Wideband Code Division Multiple Access (WCDMA) (WCDMA) system is an a kind of self-interference system, and its capacity mainly is subjected to the restriction that multiple access disturbs, so power control is very important for the system design of WCDMA.In the power control of WCDMA, the power control that user terminal (UE) and base station (Node B) participates in simultaneously is called inner loop power control (Inner Loop Power Control).Inner loop power control is carried out the fast power adjustment by the uplink and downlink link to communication period, make signal interference ratio (the Signal to Interference Ratio of uplink and downlink link, SIR) converge on signal interference ratio desired value (SIR Target), so inner loop power control can be divided into up inner loop power control (UL Inner Loop PowerControl) and descending inner loop power control (DL Inner Loop Power Control) again.
With reference to figure 1, up inner loop power control is meant: Node B estimates the SIR of the uplink special physical channel that receives, and this SIR compared with SIR Target, obtain power control instruction (TransmitPower Control, TPC), send to UE by downlink dedicated physical control channel (Downlink DedicatedPhysical Control Channel, DL DPCCH) then, UE adjusts uplink transmission power according to this TPC.Descending inner loop power control is meant: UE estimates the SIR of the downward special physical channel that receives, and this SIR compared with SIR Target, obtain TPC, then by special physical controlling channel of upward (Uplink Dedicated Physical Control Channel, UL DPCCH) send to Node B, Node B adjusts down transmitting power according to this TPC.In order to distinguish TPC that is used to adjust down transmitting power and the TPC that adjusts uplink transmission power, below the former is called first power control instruction (TPC1), the latter is called second power control instruction (TPC2).
WCDMA Node B need handle uplink special physical channel and downward special physical channel in baseband portion, the part of handling uplink special physical channel is called the uplink baseband processing unit, and the part of handling downward special physical channel is called the downgoing baseband processing unit.
In the inner loop power control procedure, the workflow of the uplink baseband processing unit of Node B and the work of downgoing baseband processing unit respectively as shown in Figures 2 and 3.
With reference to figure 2, after the uplink baseband processing unit of Node B receives uplink special physical channel (ULDPCH), this signal is carried out the power that intensity estimates to obtain this signal, and, calculate current SIR in conjunction with the noise power that receives.Current SIR and the SIR Target that sets in advance are compared, produce TPC1:, be used to indicate UE to weaken the TPC1 of transmitting power with regard to producing if SIR, illustrates then that the signal power of UE emission is too high greater than SIR Target; If SIR, illustrates then that the signal power of UE emission is low excessively less than SIR Target, just produce the TPC1 that is used to indicate UE enhancing transmitting power.
Simultaneously, the uplink baseband processing unit also carries out demodulation to the uplink special physical channel that receives, and obtains TPC2.Described demodulation comprises descrambling and despreading, if UE has transmitted by the channel code spread spectrum, the uplink baseband processing unit of Node B just need carry out despreading to the signal that receives so; If UE has transmitted by the scrambler scrambling, the uplink baseband processing unit of Node B just need carry out descrambling to the signal that receives so.Stipulate according to 3rd Generation Partnership Project (3GPP) agreement, uplink special physical channel comprises up Dedicated Physical Data Channel (UL DPDCH) and special physical controlling channel of upward (ULDPCCH), wherein contain through-put power control domain (TPC territory) in the special physical controlling channel of upward, the content in this TPC territory is exactly the TPC2 that UE sends.The uplink baseband processing unit just obtains TPC2 the TPC territory after demodulation.
With reference to figure 3, the transmitting power of the downgoing baseband processing unit of the Node B downward special physical channel (DL DPCH) that control is launched according to TPC2.If TPC2 is the instruction that indication Node B weakens transmitting power, the downgoing baseband processing unit just weakens the power of downward special physical channel according to this TPC2; If TPC2 is the instruction that indication Node B strengthens transmitting power, the downgoing baseband processing unit just strengthens the power of downward special physical channel according to this TPC2.
Simultaneously, the downgoing baseband processing unit of Node B also is modulated to TPC1 the downlink dedicated physical control channel.According to the regulation of 3GPP agreement, downward special physical channel comprises the downlink dedicated physical control channel, also comprises the TPC territory in the downlink dedicated physical control channel, and this TPC territory is used for carrying described TPC1.
In above-mentioned prior art, provided the uplink baseband processing unit and how to have produced TPC1 and obtain TPC2, also provided the downgoing baseband processing unit and how to be modulated to the downlink dedicated physical control channel according to TPC2 control down transmitting power and with TPC1.But, how not to be given among the Node B scheme that described TPC1 and TPC2 is transferred to the downgoing baseband processing unit from the uplink baseband processing unit in the prior art.
Summary of the invention
In view of this, the present invention proposes the transmission method of a kind of inner ring power control instruction at inside of base station, its purpose is, realizes power control instruction transmission from the uplink baseband processing unit to the downgoing baseband processing unit at inside of base station.
According to above-mentioned purpose, the present invention proposes the transmission method of a kind of inner loop power control signal at inside of base station, this method is provided with the control logic unit in advance between uplink baseband processing unit and downgoing baseband processing unit, and in described control logic unit, be provided for identifying on the Radio Link of uplink special physical channel in the same wireless links line identifier and be used to identify the corresponding relation between the line identifier under the downward special physical channel Radio Link, this method further may further comprise the steps:
A. the uplink baseband processing unit obtains being used to control first power control instruction of uplink transmission power and be used to control second power control instruction of down transmitting power according to the uplink special physical channel that receives, and will be used to identify on the Radio Link of described uplink special physical channel line identifier and give the control logic unit according to described first power control instruction, second power control instruction that described uplink special physical channel obtains;
B. the control logic unit obtains line identifier under the corresponding Radio Link according to line identifier on the described Radio Link and described corresponding relation, and line identifier under the described Radio Link and described first power control instruction, second power control instruction are sent to the downgoing baseband processing unit after binding;
C. the downgoing baseband processing unit is according to line identifier under the Radio Link that is used to identify the downward special physical channel that will launch, obtain first power control instruction and second power control instruction of line identifier correspondence under this Radio Link, and control the power of described downward special physical channel, and described first power control instruction is modulated to described downward special physical channel according to described second power control instruction.
Described Radio Link is up to be designated the upstream circuitry number that is used to identify uplink special physical channel.
Described Radio Link is descending to be designated the downstream circuitry number that is used to identify downward special physical channel and the home cell index of sign sub-district, described downward special physical channel place.
The step that the processing unit of uplink baseband described in the steps A obtains being used to control first power control instruction of uplink transmission power according to the uplink special physical channel that receives and is used to control second power control instruction of down transmitting power comprises: the uplink baseband processing unit produces described first power control instruction according to the signal interference ratio SIR of the uplink special physical channel that receives and the target signal interference ratio SIR Target that sets in advance, and demodulates described second power control instruction from described uplink special physical channel.
The processing unit of uplink baseband described in the steps A comprises with the step that the SIR Target that sets in advance produces first power control instruction according to the SIR of the uplink special physical channel that receives: more described SIR and SIR Target, as described SIR during, produce and be used to indicate first power control instruction that weakens transmitting power greater than SIR Target; As described SIR during, produce and be used to indicate first power control instruction that strengthens transmitting power less than SIR Target.
Described uplink special physical channel comprises special physical controlling channel of upward, and described special physical controlling channel of upward comprises power control instruction TPC territory; The step that demodulates second power control instruction described in the steps A from described uplink special physical channel comprises: described uplink special physical channel is carried out demodulation, and obtain second power control instruction the TPC territory of the special physical controlling channel of upward after described demodulation.
Described control logic unit adopts on-site programmable gate array FPGA or electrically programmable logical device EPLD to realize.
Step with line identifier under the described Radio Link and described first power control instruction, the binding of second power control instruction described in the step B comprises: line identifier under the described Radio Link and described first power control instruction, second power control instruction are bound together; Or with line identifier under the described Radio Link respectively with the binding of described first power control instruction, second power control instruction.
Described downward special physical channel comprises the downlink dedicated physical control channel, and described downlink dedicated physical control channel comprises the TPC territory; The step that described in the step C described first power control instruction is modulated to described downward special physical channel comprises: described first power control instruction is modulated in the TPC territory of described downlink dedicated physical control channel.
From such scheme as can be seen, because the present invention has increased the P_BUS that is used for transmission power control instruction between uplink baseband processing unit and downgoing baseband processing unit and control logic unit wherein, and in the control logic unit, preserved on the Radio Link corresponding relation of line identifier under the line identifier and Radio Link.In the inner loop power control procedure, the uplink baseband processing unit is after obtaining power control instruction TPC1 and TPC2 according to uplink special physical channel, line identifier on the Radio Link of power control instruction and this uplink special physical channel is sent to the control logic unit together, the control logic unit according to line identifier on the Radio Link obtain under the Radio Link line identifier and and power control instruction send to the downgoing baseband processing unit after binding, the downgoing baseband processing unit is according to line identifier take-off output control command under the Radio Link of the downward special physical channel that will launch, control the power of downward special physical channel then according to TPC1, and TPC2 is modulated to the downlink dedicated physical control channel.The present invention has constructed the transmission channel of power control instruction and the transmission method of power control instruction in Node B, filled up the blank of this respect, make inner loop power be controlled at Node B end and realized fully, and the inner ring power control instruction transmission method of the present invention's use has characteristics real-time.
Description of drawings
Fig. 1 is the basic structure schematic diagram of WCDMA inner loop power control;
Fig. 2 is the workflow diagram of uplink baseband processing unit in the prior art;
Fig. 3 is the workflow diagram of downgoing baseband processing unit in the prior art;
Fig. 4 is a system configuration schematic diagram of the present invention;
Fig. 5 is a flow chart of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
Fig. 4 is a system configuration schematic diagram of the present invention.With reference to figure 4, this system comprise uplink baseband processing unit, downgoing baseband processing unit and be used between uplink baseband processing unit and downgoing baseband processing unit the power control instruction passage of transmission inner ring power control instruction (Power Control BUS, P_BUS).P_BUS comprises the interface between control logic unit and control logic unit and uplink baseband processing unit, the downgoing baseband processing unit, described control logic unit generally adopts field programmable gate array (FPGA) or electrically programmable logical device logic control devices such as (EPLD) to realize that the interface between logic control device and uplink baseband processing unit, the downgoing baseband processing unit can adopt high speed serial ports, parallel port or bus modes such as (as Cell Bus).
Wherein, after the uplink baseband processing unit receives uplink special physical channel, obtain TPC1 and TPC2 according to method of the prior art.The uplink baseband processing unit is with TPC1, TPC2 and identify that line identifier sends to the control logic unit together on the Radio Link of this uplink special physical channel then.In Node B, the uplink special physical channel and the downward special physical channel of one wireless links need be connected, therefore in the Node B master control signaling software module is arranged, this module is set up in the process at Radio Link and is distributed on the corresponding Radio Link line identifier under the line identifier and Radio Link for uplink special physical channel and downward special physical channel, line identifier above row circuit number (UL CircuitID) is an example on the Radio Link in the present invention, and the Radio Link downstream signal is an example with home cell index (Local Cell Index) and the downstream circuitry number (DL Circuit ID) that is used to identify sub-district, downward special physical channel place.That is to say, with uplink special physical channel of up circuit number sign, with home cell index and downstream circuitry number downward special physical channel of sign.
Set in advance on the Radio Link corresponding relation of line identifier under the line identifier and Radio Link in the control logic unit of P_BUS, be about to identify under the Radio Link of line identifier and sign downward special physical channel on the Radio Link of uplink special physical channel in the same wireless links line identifier and set up corresponding relation.The control logic unit receives on TPC1, TPC2 and the Radio Link behind the line identifier, find line identifier under the corresponding Radio Link according to line identifier on the Radio Link and corresponding relation, and TPC1, the TPC2 that will send over together with line identifier on this Radio Link and send to the downgoing baseband processing unit after the line identifier binding under the corresponding Radio Link with it.Certainly, also line identifier on the original Radio Link together can be issued the downgoing baseband processing unit.
The downgoing baseband processing unit receives under power control instruction and the Radio Link behind the line identifier, according to line identifier under the Radio Link that identifies the downward special physical channel that to launch, take out line identifier sends under this Radio Link power control instruction TPC1 and TPC2.According to method of the prior art, TPC1 is modulated to the downlink dedicated physical control channel then, and the power of controlling downward special physical channel according to TPC2.
With reference to figure 5, flow process of the present invention is as follows:
It is pointed out that step 501 and step 502 carry out simultaneously, it being divided into two steps here is in order to narrate conveniently.
Line identifier is meant the upstream circuitry number of a uplink special physical channel of unique identification in the uplink baseband processing unit on the Radio Link in the present embodiment, and line identifier is meant the home cell index of a downward special physical channel of unique identification in the downgoing baseband processing unit and downstream circuitry number under the Radio Link.But be not limited to this, on the described Radio Link under line identifier and the Radio Link line identifier also can be that other can uplink special physical channel of unique identification or the information of downward special physical channel.
Claims (9)
1, a kind of inner loop power control signal is at the transmission method of inside of base station, it is characterized in that, between uplink baseband processing unit and downgoing baseband processing unit, the control logic unit is set in advance, and in described control logic unit, be provided for identifying on the Radio Link of uplink special physical channel in the same wireless links line identifier and be used to identify the corresponding relation between the line identifier under the downward special physical channel Radio Link, this method further may further comprise the steps:
A. the uplink baseband processing unit obtains being used to control first power control instruction of uplink transmission power and be used to control second power control instruction of down transmitting power according to the uplink special physical channel that receives, and will be used to identify on the Radio Link of described uplink special physical channel line identifier and give the control logic unit according to described first power control instruction, second power control instruction that described uplink special physical channel obtains;
B. the control logic unit obtains line identifier under the corresponding Radio Link according to line identifier on the described Radio Link and described corresponding relation, and line identifier under the described Radio Link and described first power control instruction, second power control instruction are sent to the downgoing baseband processing unit after binding;
C. the downgoing baseband processing unit is according to line identifier under the Radio Link that is used to identify the downward special physical channel that will launch, obtain first power control instruction and second power control instruction of line identifier correspondence under this Radio Link, and control the power of described downward special physical channel, and described first power control instruction is modulated to described downward special physical channel according to described second power control instruction.
2, method according to claim 1 is characterized in that, described Radio Link is up to be designated the upstream circuitry number that is used to identify uplink special physical channel.
3, method according to claim 1 is characterized in that, described Radio Link is descending to be designated the downstream circuitry number that is used to identify downward special physical channel and the home cell index of sign sub-district, described downward special physical channel place.
4, method according to claim 1, it is characterized in that the step that the processing unit of uplink baseband described in the steps A obtains being used to control first power control instruction of uplink transmission power according to the uplink special physical channel that receives and is used to control second power control instruction of down transmitting power comprises:
The uplink baseband processing unit produces described first power control instruction according to the signal interference ratio SIR of the uplink special physical channel that receives and the target signal interference ratio SIR Target that sets in advance, and demodulates described second power control instruction from described uplink special physical channel.
5, method according to claim 4 is characterized in that, the processing unit of uplink baseband described in the steps A comprises with the step that the SIR Target that sets in advance produces first power control instruction according to the SIR of the uplink special physical channel that receives:
More described SIR and SIR Target as described SIR during greater than SIR Target, produce and are used to indicate first power control instruction that weakens transmitting power; As described SIR during, produce and be used to indicate first power control instruction that strengthens transmitting power less than SIR Target.
6, method according to claim 4 is characterized in that, described uplink special physical channel comprises special physical controlling channel of upward, and described special physical controlling channel of upward comprises power control instruction TPC territory;
The step that demodulates second power control instruction described in the steps A from described uplink special physical channel comprises: described uplink special physical channel is carried out demodulation, and obtain second power control instruction the TPC territory of the special physical controlling channel of upward after described demodulation.
7, method according to claim 1 is characterized in that, described control logic unit adopts on-site programmable gate array FPGA or electrically programmable logical device EPLD to realize.
8, method according to claim 1, it is characterized in that the step with line identifier under the described Radio Link and described first power control instruction, the binding of second power control instruction described in the step B comprises: line identifier under the described Radio Link and described first power control instruction, second power control instruction are bound together; Or with line identifier under the described Radio Link respectively with the binding of described first power control instruction, second power control instruction.
9, method according to claim 1 is characterized in that, described downward special physical channel comprises the downlink dedicated physical control channel, and described downlink dedicated physical control channel comprises the TPC territory;
The step that described in the step C described first power control instruction is modulated to described downward special physical channel comprises: described first power control instruction is modulated in the TPC territory of described downlink dedicated physical control channel.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100826309A CN100518005C (en) | 2005-07-06 | 2005-07-06 | Transmission method of inner ring power control instruction in interior of base station |
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| CNB2005100826309A CN100518005C (en) | 2005-07-06 | 2005-07-06 | Transmission method of inner ring power control instruction in interior of base station |
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| CN1852037A CN1852037A (en) | 2006-10-25 |
| CN100518005C true CN100518005C (en) | 2009-07-22 |
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| CN101488787B (en) * | 2008-01-14 | 2012-06-27 | 大唐移动通信设备有限公司 | Control method and base station for uplink loss |
| KR101459147B1 (en) | 2008-02-04 | 2014-11-10 | 엘지전자 주식회사 | Method of transmitting transmit power control command in wireless communication system |
| CN102056276A (en) * | 2009-11-10 | 2011-05-11 | 中兴通讯股份有限公司 | Method and device for base station to determine downlink inner ring power control |
| CN102056277B (en) * | 2009-11-10 | 2014-10-22 | 中兴通讯股份有限公司 | Method, device and system for determining downlink inner-loop power control mode |
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Effective date of registration: 20211229 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. Effective date of registration: 20211229 Address after: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee after: HUAWEI TECHNOLOGIES Co.,Ltd. Address before: Shanghai city 200127 Eshan road 91 No. 98 Pudong Software Park Lujiazui branch No. 2 Patentee before: SHANGHAI HUAWEI TECHNOLOGIES CO.,LTD. |
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