CN101064538A - Power control method for time-division synchronous CDMA communication system - Google Patents
Power control method for time-division synchronous CDMA communication system Download PDFInfo
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- CN101064538A CN101064538A CNA2006100775547A CN200610077554A CN101064538A CN 101064538 A CN101064538 A CN 101064538A CN A2006100775547 A CNA2006100775547 A CN A2006100775547A CN 200610077554 A CN200610077554 A CN 200610077554A CN 101064538 A CN101064538 A CN 101064538A
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Abstract
The invention discloses a power control method of time synchronization code multi-address communication system; the technology in the TD-SCDMA system, the network sends the upgoing buildup business physical channel expectation receiving power value to the user's device; the user's device add the measured referenced physical channel route lossless value and the received upgoing buildup business physical channel expectation receiving power value, and calculates the sending power value in the open loop power control. The network calculates the control order parameters according to receiving power value in the upgoing buildup business physical channel, and sends the parameters order to the user's device, the user's device adjusts the sending power of upgoing buildup business physical channel according to the power adjusting order. The system in the invention can be realized easily, and it can control the sending power of UE in upgoing buildup business physical channel timely.
Description
Technical field
The present invention relates to the wireless telecommunication system technical field, relate in particular to a kind of Poewr control method of TD-SCDMA communication system.
Background technology
TD-SCDMA (TD SDMA) wireless telecommunication system is one of 3-G (Generation Three mobile communication system) standard of 3GPP (3rd GenerationPartnership Project) normalized definition.An important feature of 3-G (Generation Three mobile communication system) is to support Packet data service better.In order to improve the upstream packet service rate, the 3GPP standard has been introduced high speed uplink packet access (HSUPA, High SpeedUplink Packet Access) technology, is referred to as up enhancing (Uplink Enhancement) technology again.In the HSUPA technology, protocol processes entity and new channel architecture have newly been introduced.In order to reduce the network processes time delay, the MAC-e entity of the new MAC layer of introducing is placed among the Node B, the protocol processes that is used for being correlated with, the scheduling of the industry of going forward side by side affair and channel resource.
In the HSUPA technology of the TD-SCDMA of 3GPP standard system, the physical channel in the new channel architecture of introducing comprises at least:
Up enhancing Physical Random Access Channel: be used for carrying the business request information that terminal sends to Node B;
The professional physical channel of up enhancing: be used for carrying terminal and send business information to Node B;
Downstream grants physical channel: be used for carrying Node B and send the relevant control information of the professional physical channel of up enhancing to terminal;
Descending indication physical channel: be used for carrying Node B and feed back HARQ (mixing automatic error request) agreement relevant information to terminal.
In the CDMA radio communication system, power control is the problem of a key, for the up direction that is transmitted into network side from terminal, if under the prerequisite that satisfies the communication quality requirement, it is identical to control the signal level that each terminal transmits when arriving the network side radio R-T unit, then can make the up-link capacity of this system reach maximum.Otherwise,, then can be subjected to being difficult to obtain satisfied communication quality from the interference of other terminal signaling if the signal level that transmits when arriving the network side radio R-T unit of terminal is low excessively; And if signal level is too high, though this terminal can obtain communication quality preferably, its power consumption is bigger on the one hand, has a strong impact on the stand-by time of terminal under limited battery, high-power on the other hand signal can produce other terminal and disturb, thereby influences the communication quality of other terminal.
Summary of the invention
Technical problem to be solved by this invention is, a kind of Poewr control method of TD-SCDMA communication system is provided, and in the HSUPA technology in the TD-SCDMA system, to the professional physical channel of up enhancing of new introducing, carries out effective power control.
The invention provides a kind of Poewr control method of TD-SCDMA communication system, be used for the power control of the professional physical channel of up enhancing of high-speed uplink packet access technique, comprise the steps:
(1) network side sends to subscriber equipment with the professional physical channel expectation received power value of up enhancing;
(2) the expectation received power value sum of subscriber equipment the professional physical channel of up enhancing that its path loss values and network side with reference to physical channel that measures is received, as the Initial Trans of the professional physical channel of up enhancing, send uplink business data by the professional physical channel of up enhancing.
Wherein, the present invention can further include:
(3) network side receives the professional physical channel of up enhancing, according to the received power measured value of the professional physical channel of up enhancing, calculates and produces the power control command parameter, and send to subscriber equipment;
(4) subscriber equipment receives described power control command parameter, and according to the transmitting power of the professional physical channel of the up enhancing of this parameter adjustment.
The present invention can further include:
(5) network side sends the relevant authorization messages of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel, described authorization messages comprises the expectation received power value of customer equipment identification and the professional physical channel of up enhancing, and wherein said expectation received power value is newly calculated according to current business mass parameter and sub-district wireless environment parameter by network side node B;
(6) subscriber equipment receives the expectation received power value of the professional physical channel of up enhancing from the authorization messages that sends to this subscriber equipment according to the customer equipment identification information in the described authorization messages, and will be worth and the described path loss values sum that measures with reference to physical channel, as the new Initial Trans of the professional physical channel of up enhancing, send uplink business data.
Wherein, described step (1) may further include:
Network side sends request according to the uplink service of the subscriber equipment of receiving, send the relevant authorization message of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel, described authorization message comprises customer equipment identification, and/or the attribute information of the professional physical channel of up enhancing.
Wherein, described authorization message may further include the expectation received power value of the new professional physical channel of up enhancing that network side node B obtains according to current business mass parameter and sub-district wireless environment calculation of parameter.
Wherein, if the described expectation received power value that newly the calculates save value corresponding with network side compared when differing a predetermined threshold, then upgrade this save value with this value of newly calculating.
Wherein, described step (2) may further include:
The expectation received power value that comprises in the authorization messages of subscriber equipment according to the correspondence that receives upgrades original expectation received power value that receives from network side.
Wherein, in the described step (1), the professional physical channel expectation received power value of described up enhancing when network side is the up enhancing resource of subscriber equipment original allocation, sends to subscriber equipment by the radio network controller of network side by RRC message.
Wherein, in the described step (1), the professional physical channel expectation received power value of described up enhancing, when network side is the up enhancing resource of subscriber equipment dynamic dispatching, during the professional physical channel resources of especially up enhancing, give subscriber equipment by the authorization messages on the downstream grants physical channel by the Node B of network side.
Wherein, in the described step (2), be Primary Common Control Physical Channel with reference to the physics physical channel.
The Poewr control method of the professional physical channel of up enhancing in the HSUPA technology in a kind of TD-SCDMA provided by the present invention system, system realizes simplicity of design, the method that adopts the control of open loop and closed power to combine makes that network side can the transmitting power of fine and timely control terminal on this uplink physical channel.
Description of drawings
Fig. 1 is the flow chart according to the described method of the embodiment of the invention.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing, the method for the invention is described in detail.
The present invention provides Poewr control method respectively for the professional physical channel of up enhancing in the HSUPA technology in the TD-SCDMA system, and the thinking of described Poewr control method comprises:
1) open Loop Power control: the expectation received power value sum of its professional physical channel of up enhancing that receives with reference to the path loss values of physical channel with from network side that measures of subscriber devices compute is as the Initial Trans the open Loop Power control process of the professional physical channel of up enhancing.
2) closed power control: subscriber equipment is adjusted the transmitting power of the professional physical channel of up enhancing according to the power control command that receives the network side transmission.
Method to the power of the professional physical channel of up enhancing in the high-speed uplink packet access technique is controlled as shown in Figure 1, comprises the steps:
Step 101: when network side is the up enhancing resource of subscriber equipment original allocation, by RRC message, the professional physical channel expectation received power value of up enhancing is sent to UE by the RNC (radio network controller) of network side.
These processes may comprise that RRC connects the process (RRC connectionestablishment) of setting up, radio bearer is set up process (radio bearer establishment), radio bearer reconfiguration course (radio bearer reconfiguration), radio bearer dispose procedure (the radio bearerrelease), transmission channel reconfiguration course (transport channel reconfiguration), physical channel reconfiguration course (physical channel reconfiguration), cell updating course (cell update) etc.In these processes, the professional physical channel expectation received power value of up enhancing can be obtained according to QoS (quality of service) parameter and the sub-district wireless environment calculation of parameter of business by RNC, reports and obtains and sub-district wireless environment parameter is measurement by Node B and UE; Perhaps obtain according to QoS (quality of service) parameter and the sub-district wireless environment calculation of parameter of business, and the professional physical channel expectation received power value of up enhancing is sent to RNC by Node B.
UE preserves the expectation received power value of the professional physical channel of up enhancing that receives from RRC message.
Step 102: subscriber equipment at first sends uplink service and sends request when needs send uplink business data.
In the HSUPA of TD-SCDMA system technology, if the UE side has the needs that send uplink business data, UE at first sends uplink service and sends request, and this request is exactly by up enhancing random access control channel carrying, and sends to Node B in random access procedure.
Step 103: after the Node B of network side receives the request of subscriber equipment, send the relevant authorization messages of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel.
The control information that the professional physical channel of up enhancing is relevant comprises the UE sign at least, and/or the attribute information of the professional physical channel of up enhancing (as time slot, spreading code, duration etc.), the expectation received power value of the professional physical channel of up enhancing that the optional Node of comprising B newly calculates.Node B preserves the expectation received power value of the professional physical channel of up enhancing, comprises initial value.If the expectation received power value of the professional physical channel of up enhancing is initially calculated by RNC and produces, then RNC sends to Node B with this value.Then, Node B is according to QoS (quality of service) parameter of business and the expectation received power value of the professional physical channel of the up enhancing of sub-district wireless environment calculation of parameter, when if the value of newly calculating is compared greater than a predetermined threshold with its save value, then upgrade its save value, and send to UE by the authorization messages on the downstream grants physical channel.
If comprise the expectation received power value of the professional physical channel of up enhancing in the authorization messages, UE upgrades the expectation received power value of the professional physical channel of up enhancing of its preservation with this value.
Step 104: the professional physical channel open Loop Power control of the up enhancing of subscriber devices compute Initial Trans.
The expectation received power value sum of the professional physical channel of up enhancing that receives with reference to the path loss values of physical channel with from network side that UE calculates that it measures is promptly calculated according to following formula as the Initial Trans the open Loop Power control process of the professional physical channel of up enhancing:
P
E-PUCH＝L
PCCPCH+PRX
E-PUCHdes
Wherein, L
PCCPCHIt is the path loss values that UE measures with reference to physical channel P-CCPCH (Primary Common Control Physical Channel, Primary Common Control Physical Channel); PRX
E-PUCHdesIt is the expectation received power value of the professional physical channel of up enhancing.
Step 105:UE sends uplink business data with above-mentioned initial power emission by the professional physical channel of up enhancing.
Step 106: network side Node B receives the professional physical channel of up enhancing, according to the received power measured value of the professional physical channel of up enhancing, calculates and produces power control command (TPC) parameter.
Network side it is also conceivable that wireless environment, as factors such as up interference when calculating the generation power control command.The TPC production method is identical with the TPC order production method of the DPCH (DPCH) in the present 3GPP standard.
Step 107: network side Node B sends to subscriber equipment with the TPC command parameter.
In the HSUPA of TD-SCDMA system technology, in order to improve the channel service efficiency, descending indication physical channel can be a common signal channel or shared channel, and promptly a plurality of UE can use this channel simultaneously, and obtains relevant indication information separately according to configuration information.Therefore, each UE related power control command can with other indication information of this UE together, adopt identical bearing mode, send to UE by descending indication physical channel.Power control command also can carry by alternate manner, as PLCCH (physical layer Common Control Channel) channel, UE private downlink physical channel.When by the carrying of UE DPCH, the professional physical channel of up enhancing is shared identical power control command (TPC) with UE dedicated uplink physical channel
Step 108: subscriber equipment receives described power control command parameter, and according to the transmitting power of the professional physical channel of the up enhancing of power control command parameter adjustment that receives.
Power control command TPC makes UE increase or reduce the professional physical channel of the up enhancing transmission power level before this of predetermined step-length, and this predetermined step-length sends to UE by network side by broadcasting or dedicated signaling message.This step and step 106, the 107th, the professional physical channel closed power of up enhancing process, this process are after the professional physical channel initial transmissions of up enhancing, the process that constantly repeats.
Step 109: the Node B of network side sends the relevant authorization messages of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel.
The control information that the professional physical channel of up enhancing is relevant comprises the expectation received power value of UE sign and the professional physical channel of up enhancing.Wherein, the expectation received power value of the professional physical channel of up enhancing is that Node B newly calculates.
Step 110: subscriber equipment calculates the professional physical channel open Loop Power control of up enhancing Initial Trans according to the expectation received power value of the new professional physical channel of up enhancing that receives from authorization messages, carry out once new open Loop Power control process.
Step 111:UE sends uplink business data with above-mentioned new initial power emission by the professional physical channel of up enhancing.
Claims (10)
1, a kind of Poewr control method of TD-SCDMA communication system is used for the power control of the professional physical channel of up enhancing of high-speed uplink packet access technique, it is characterized in that, comprises the steps:
(1) network side sends to subscriber equipment with the professional physical channel expectation received power value of up enhancing;
(2) the expectation received power value sum of subscriber equipment the professional physical channel of up enhancing that its path loss values and network side with reference to physical channel that measures is received, as the Initial Trans of the professional physical channel of up enhancing, send uplink business data by the professional physical channel of up enhancing.
2, the method for claim 1 is characterized in that, further comprises:
(3) network side calculates and produces the power control command parameter, and send to subscriber equipment according to the received power measured value of the professional physical channel of up enhancing;
(4) subscriber equipment receives described power control command parameter, and according to the transmitting power of the professional physical channel of the up enhancing of this parameter adjustment.
3, method as claimed in claim 2 is characterized in that, further comprises:
(5) network side sends the relevant authorization messages of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel, described authorization messages comprises the expectation received power value of customer equipment identification and the professional physical channel of up enhancing, and wherein said expectation received power value is newly calculated according to current business mass parameter and sub-district wireless environment parameter by network side node B;
(6) subscriber equipment receives the expectation received power value of the professional physical channel of up enhancing from the authorization messages that sends to this subscriber equipment according to the customer equipment identification information in the described authorization messages, and will be worth and the described path loss values sum that measures with reference to physical channel, as the new Initial Trans of the professional physical channel of up enhancing, send uplink business data.
4, the method for claim 1 is characterized in that, described step (1) further comprises:
Network side sends request according to the uplink service of the subscriber equipment of receiving, send the relevant authorization message of the professional physical channel of up enhancing to subscriber equipment by the downstream grants physical channel, described authorization message comprises customer equipment identification, and/or the attribute information of the professional physical channel of up enhancing.
5, method as claimed in claim 4 is characterized in that, described authorization message further comprises the expectation received power value of the new professional physical channel of up enhancing that network side node B obtains according to current business mass parameter and sub-district wireless environment calculation of parameter.
6, method as claimed in claim 5 is characterized in that, if the described expectation received power value that newly the calculates save value corresponding with network side compared when differing a predetermined threshold, then upgrades this save value with this value of newly calculating.
7, method as claimed in claim 5 is characterized in that, described step (2) further comprises:
The expectation received power value that comprises in the authorization messages of subscriber equipment according to the correspondence that receives upgrades original expectation received power value that receives from network side.
8, the method for claim 1, it is characterized in that, in the described step (1), the professional physical channel expectation received power value of described up enhancing, when network side is the up enhancing resource of subscriber equipment original allocation, send to subscriber equipment by RRC message by the radio network controller of network side.
9, the method for claim 1, it is characterized in that, in the described step (1), the professional physical channel expectation received power value of described up enhancing, when network side is the up enhancing resource of subscriber equipment dynamic dispatching, during the professional physical channel resources of especially up enhancing, give subscriber equipment by the authorization messages on the downstream grants physical channel by the Node B of network side.
10, the method for claim 1 is characterized in that, in the described step (2), is Primary Common Control Physical Channel with reference to the physics physical channel.
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| CN2006100775547A CN101064538B (en) | 2006-04-30 | 2006-04-30 | Power control method for time-division synchronous CDMA communication system |
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| CN2006100775547A CN101064538B (en) | 2006-04-30 | 2006-04-30 | Power control method for time-division synchronous CDMA communication system |
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| CN101527958A (en) * | 2009-04-09 | 2009-09-09 | 中兴通讯股份有限公司 | Determining method of launch power, base station and terminal thereof |
| CN101998613A (en) * | 2009-08-21 | 2011-03-30 | 鼎桥通信技术有限公司 | Method for controlling power of evolved physical uplink channel (E-PUCH) in high-speed uplink packet access (HSUPA) system |
| CN101572949B (en) * | 2008-04-28 | 2011-04-20 | 华为技术有限公司 | Method, communication system and user device for enhancing random access |
| CN102045823A (en) * | 2009-10-16 | 2011-05-04 | 大唐移动通信设备有限公司 | Method, system and equipment for controlling power |
| CN102316573A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | Monitoring channel transmitting power informing method and AGC (Automatic Gain Control) setting method |
| CN102315896A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | Monitoring type channel receiving method |
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| CN101835253B (en) * | 2009-03-12 | 2013-08-07 | 中兴通讯股份有限公司 | UE (User Equipment) side uplink power control device and method in TD-SCDMA (Time Division-Synchronous Code Division Multiple Access) system |
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| MY128631A (en) * | 1999-03-22 | 2007-02-28 | Interdigital Tech Corp | Outer loop/weighted open loop power control in a time division duplex communication system |
| 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 |
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| CN101527958A (en) * | 2009-04-09 | 2009-09-09 | 中兴通讯股份有限公司 | Determining method of launch power, base station and terminal thereof |
| CN101527958B (en) * | 2009-04-09 | 2014-09-10 | 中兴通讯股份有限公司 | Determining method of launch power, base station and terminal thereof |
| CN101873682B (en) * | 2009-04-21 | 2013-01-23 | 电信科学技术研究院 | Realizing method , system and device of high-speed uplink grouping access service |
| CN101998613A (en) * | 2009-08-21 | 2011-03-30 | 鼎桥通信技术有限公司 | Method for controlling power of evolved physical uplink channel (E-PUCH) in high-speed uplink packet access (HSUPA) system |
| CN102045823A (en) * | 2009-10-16 | 2011-05-04 | 大唐移动通信设备有限公司 | Method, system and equipment for controlling power |
| CN102045823B (en) * | 2009-10-16 | 2014-02-05 | 电信科学技术研究院 | Method, system and equipment for controlling power |
| CN102316573A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | Monitoring channel transmitting power informing method and AGC (Automatic Gain Control) setting method |
| CN102315896A (en) * | 2010-06-30 | 2012-01-11 | 重庆重邮信科通信技术有限公司 | Monitoring type channel receiving method |
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