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WO2010088831A1 - 基于多载波的反向功率控制方法 - Google Patents

基于多载波的反向功率控制方法 Download PDF

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Publication number
WO2010088831A1
WO2010088831A1 PCT/CN2009/075858 CN2009075858W WO2010088831A1 WO 2010088831 A1 WO2010088831 A1 WO 2010088831A1 CN 2009075858 W CN2009075858 W CN 2009075858W WO 2010088831 A1 WO2010088831 A1 WO 2010088831A1
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WO
WIPO (PCT)
Prior art keywords
service
carrier
power control
terminal
access network
Prior art date
Application number
PCT/CN2009/075858
Other languages
English (en)
French (fr)
Other versions
WO2010088831A8 (zh
Inventor
余西
谢忠时
Original Assignee
中国广东省深圳市
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 中国广东省深圳市 filed Critical 中国广东省深圳市
Priority to US13/147,734 priority Critical patent/US8842618B2/en
Publication of WO2010088831A1 publication Critical patent/WO2010088831A1/zh
Publication of WO2010088831A8 publication Critical patent/WO2010088831A8/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
    • H04W52/265—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the quality of service QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/08—Closed loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment

Definitions

  • the present invention relates to the field of communications, and in particular, to a multi-carrier based reverse power control method.
  • BACKGROUND OF THE INVENTION In a wireless communication system, different monthly services have different monthly quality requirements, and the services can be classified into different service types according to the service quality requirements of the service. For example, the service can be divided into a Best Effort (BE) flow, an Assured Forwarding (AF) flow, and an Expedited Forwarding (EF) flow, where the AF flow and The EF flow system is called a QoS flow.
  • BE stream can tolerate high end-to-end delay and bit error rate (Bit Error)
  • FTP File Transfer Protocol
  • HTTP HyperText Transport Protocol
  • AF streams e.g., video streams generated by video conferencing
  • BE streams are similar to BE streams and can tolerate higher end-to-end delays, but have higher BER requirements and higher requirements for minimum average throughput.
  • EF flows have lower throughput requirements but higher end-to-end latency requirements.
  • VoIP Voice over Internet Protocol
  • VT Video Telephone
  • the network side allocates one carrier for each QoS service, that is, carries each QoS service on a single carrier, and uses the same power control policy for each service. Because the power control policies of the service are different for different services, if multiple service types are different, the network side still uses the same power control policy for each service, especially the QoS service and the non-QoS. In the case of QoS services, terminal resources are wasted and the quality of service is affected.
  • the network side existing in the related art uses the same power for multiple services requested by a user.
  • the present invention is directed to a control strategy, causing waste of terminal resources and affecting the quality of service of the service.
  • the main object of the present invention is to provide a multi-carrier based reverse power control method and apparatus to solve the above problems.
  • a multi-carrier based reverse power control method is provided for an access network to perform power control on multiple services requested by a terminal.
  • the present invention is based on the reverse power control method of multi-carrier comprising: an access network is determined prior to the carrier service, the establishment of the forward and reverse carrier corresponding to the carrier prior to the corresponding relationship between the carrier and the carrier 1 ⁇ before And the corresponding relationship is sent to the terminal; the access network determines the power control command of the service according to the service type of the service; and the access network sends the power control command of the service to the terminal by using the forward carrier.
  • the method may further include: the terminal sending an access request to the access network, requesting to establish a forward traffic channel of the service, where the access request carries the service of the service Type information; the access network establishes a forward traffic channel of the service according to the access request, and the forward traffic channel is carried on the forward carrier.
  • the process for the access network to send the power control command of the service to the terminal by using the forward carrier may include: the access network sends the power control command of the service to the terminal by using the forward traffic channel carried on the forward carrier.
  • the determining the power control command may include: the power control policy and/or the power control parameter determining the power control command.
  • the method may further include: determining, by the terminal, the forward carrier and the corresponding relationship, determining a reverse carrier corresponding to the forward carrier; and using the terminal on the reverse carrier
  • the power control command adjusts the reverse traffic channel pilot power of the service.
  • a multi-carrier based reverse power control method is provided for an access network to perform power control on a plurality of services requested by a terminal.
  • the multi-carrier based reverse power control method includes: for each service, accessing the network to the service type of the service, determining a power control command of the service; the terminal determining the reverse carrier of the service, establishing the reverse carrier and corresponding forward reverse carrier corresponding relationship between the carriers, and ⁇ 1 reverse carrier to a correspondence between the access network; Gen only access network and the reverse carrier according to the corresponding relationship, determines the corresponding forward reverse carrier The carrier transmits the power control command of the service to the terminal through the forward carrier.
  • the method may further include: the terminal sending an access request to the access network, requesting to establish a forward traffic channel of the service, where the access request carries the service type information of the service; and the access network establishes the service according to the access request.
  • the process for the access network to send the power control command of the service to the terminal by using the forward carrier may include: the access network sends the power control command of the service to the terminal by using the forward traffic channel carried on the forward carrier.
  • determining the processing of the power control command can include: determining the power control command by the power control strategy and/or the power control parameter.
  • the method may further include: the terminal adjusting the reverse traffic channel pilot power of the service by using the power control command on the reverse carrier.
  • the reverse carrier and the corresponding relationship may be notified to the access network by the terminal through one of the following messages: a traffic channel setup complete response message, a negotiation message.
  • FIG. 1 is a flow chart of a multi-carrier based reverse power control method according to a first embodiment of the method of the present invention
  • FIG. 2 is a multi-carrier based reverse power control according to a second embodiment of the method of the present invention.
  • FIG. 3 is a detailed process flow diagram of a multi-carrier based reverse power control method according to Embodiment 2 of the method of the present invention.
  • the network side allocates one carrier for each QoS service, and each service is provided.
  • the same power control strategy can result in waste of terminal resources.
  • the present invention provides a multi-carrier based reverse power control scheme, which uses different power control strategies for carriers carrying different services.
  • one of the access network (Access Network, abbreviated as AN) or the access terminal (Access Terminal, abbreviated as AT) is determined for each QoS service.
  • the access network Determining a first reference carrier that carries the QoS service, and determining a correspondence between the first reference carrier and the second reference carrier, where the first reference carrier and the second reference carrier are mutually forward carriers, the access network or The terminal notifies the first reference carrier and the corresponding relationship to the other party, and then the access network sends the power control command of the service to the terminal by using the forward traffic channel carried on the forward carrier, where the terminal corresponds to the forward carrier. On the carrier, the received power control command is used to adjust the reverse traffic channel pilot power of the service.
  • the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.
  • the methods in the prior art are first illustrated.
  • the network side when a user requests VT service and FTP service from the network side at the same time, the network side carries the VT service on one carrier, carries the FTP service on other carriers, and sends the FTP service to the VT service and FTP.
  • the service sends the same power control policy, so that the VT service and the FTP service use the received power control policy to adjust the reverse traffic channel pilot power of the respective service.
  • the VT service belongs to the EF stream, and the FTP service belongs to the BE stream.
  • the multi-carrier based reverse power control method of the present invention can be implemented by two methods, which are implemented by combining the method embodiment 1 and the method.
  • Example 2 describes the two methods separately.
  • Method Embodiment 1 According to an embodiment of the present invention, a multi-carrier based reverse power control method is provided.
  • FIG. 1 is a flowchart of a multi-carrier based reverse power control method according to an embodiment of the present invention. It should be noted that, for convenience of description, the method embodiment of the present invention is shown and described in the form of steps in FIG. The technical solution, the steps shown in Figure 1 can be performed in a computer system such as a set of computer executable instructions. Although the logical order is illustrated in FIG. 1, in some cases, the illustrated or described steps may be performed in a different order than herein. As shown in FIG. 1, the method includes the following steps: 4 (step 4 gathers S 102 to step 4 gathers S 106 ).
  • Step 4 Poly S 102, for each service requested by the user, the access network determines to forward traffic carrier, for establishing the forward and reverse carrier corresponding to the carrier prior to the corresponding relation between the carrier and the carrier 1 ⁇ before And the corresponding relationship is sent to the terminal; Step S104, accessing the service type of the network service, determining a power control command of the service, where the access network may determine the power control command according to the power control policy and/or the power control parameter, and After determining, a power control command is generated (the power control command may be a string of bits); Step S106, the access network sends a power control command of the service to the terminal through the forward carrier, after which the terminal forwards the forward carrier and Corresponding relationship, determining the reverse carrier corresponding to the forward carrier, and adjusting the reverse traffic channel pilot power of the service by using the power control command on the reverse carrier.
  • Step S104 accessing the service type of the network service, determining a power control command of the service, where the access network may determine the power control command according to the power
  • the power control policy may be pre-set in the system and identified in a unified manner, and each power control policy may be represented by a power control parameter.
  • the access network is determined by each service corresponding to the front and reverse carrier to carrier and carrier on the forward power control command ⁇ 1 (i.e., power control command) notifies the terminal,
  • the terminal can adjust the reverse traffic channel pilot power of the service on the corresponding reverse carrier, effectively reducing the power loss of the terminal, and improving the QoS quality of the service.
  • the user requests multiple services from the access network at the same time, and sends an access request to the access network, where the access request carries service type information of multiple services, and requests to establish each service before
  • the access network specifies a forward carrier and a reverse carrier corresponding to the forward carrier for each service, and establishes different forward traffic channels for different services.
  • the embodiment of the present invention will be described by taking the service 1 as an example.
  • the access network specifies a forward carrier for the service 1, and establishes a correspondence between the forward carrier and the reverse carrier corresponding to the forward carrier, and sends the forward carrier and the corresponding relationship to the terminal through the control channel;
  • the network determines the power control policy and/or the power control parameter of the service 1 according to the service type information of the service 1 in the access request, and generates a power control command, where the access network refers to the service 1
  • a forward traffic channel is established on the predetermined forward carrier, and a power control command is sent to the terminal through the forward traffic channel.
  • the terminal receives the forward carrier and the corresponding relationship of the service 1 on the control channel, and parses the reverse carrier corresponding to the forward carrier by using the forward carrier and the corresponding relationship, and is carried on the forward carrier.
  • the power control command of the service 1 is received to the traffic channel, and then the terminal adjusts the reverse traffic channel pilot power of the service 1 using the received power control command on the resolved reverse carrier.
  • the terminal may use different power control policies for different services carried by different carriers, and adjust the pilot power of the reverse traffic channel of each service.
  • Method Embodiment 2 According to an embodiment of the present invention, a multi-carrier based reverse power control method is provided.
  • Step S202 Determine, for each service requested by the user, a service type of the service that is accessed by the network, and determine a power control command of the service, where the access network may determine the power control command according to the power control policy and/or the power control parameter. And generating a power control command after determining (the power control command may be a series of bits);
  • Step S204 the terminal determines the reverse carrier of the service, and establishes a correspondence between the reverse carrier and the forward carrier corresponding to the reverse carrier. Transmitting the reverse carrier and the corresponding relationship to the access network.
  • Step S206 The access network determines the forward carrier corresponding to the reverse carrier according to the reverse carrier and the corresponding relationship, and sends the power control command of the service to the forward carrier. To the terminal, the terminal adjusts the reverse traffic channel pilot power of the service using the power control command on the reverse carrier.
  • the power control policy may be set in the system in advance, and is identified in a unified manner, and each power control policy may be represented by a power control parameter.
  • the terminal determines the forward carrier and the reverse carrier corresponding to each service, and the access network notifies the terminal to use the power policy on the forward carrier, so that the terminal can correspond Adjusting the reverse traffic channel pilot power of the service on the reverse carrier, The efficiency reduces the power loss of the terminal and improves the QoS quality of the service.
  • the user requests multiple services from the access network at the same time, and sends an access request to the access network, where the access request carries service type information of multiple services, and requests to establish each service before
  • the embodiment of the present invention will be described by taking the service 1 as an example.
  • the access network determines the power control policy and/or the power control parameter of the service 1 according to the service type information of the service 1 in the access request, and generates a power control command; the terminal specifies the reverse carrier for the service 1, and establishes the Corresponding relationship between the reverse carrier and the forward carrier corresponding to the reverse carrier, and sending the reverse carrier and the corresponding relationship to the access network through the traffic channel. Specifically, the terminal may reverse by one of the following messages The carrier and the corresponding relationship are notified to the access network: the service channel setup completes the response message and the negotiation message; the access network determines the forward carrier corresponding to the reverse carrier according to the reverse carrier and the corresponding relationship, and establishes a forward direction on the forward carrier.
  • FIG. 3 illustrates a flow of an AT notifying a carrier of a carrier carrying a QoS service by a message according to an embodiment of the present invention. As shown in FIG. 3, the following processing steps are included (steps S301 to S306).
  • Step S301 When the AT has a QoS service requirement, the AT sends a QoS service request to the AN to request to establish a service channel, where the QoS service request carries service type information of each service.
  • the AN determines that the QoS service channel (ie, the forward traffic channel described above) can be established with the AT according to resources of the current system, and establishes QoS between the AN and the AT on the forward carrier. Business channel.
  • Step S303 after the AT and the AN complete the establishment of the QoS service channel, the AT specifies the correspondence between the reverse carrier and the forward carrier corresponding to the reverse carrier for each service, and notifies the AN of the reverse carrier of each service and the corresponding Correspondence relationship.
  • Step S304 the AN determines a forward carrier corresponding to the reverse carrier according to the reverse carrier and the corresponding relationship.
  • Step S306 the AT obtains a power control command according to the forward carrier, and performs power control on the reverse carrier corresponding to the forward carrier, that is, uses the received power control command to adjust the reverse of the service on the reverse carrier. Pilot power to the traffic channel.
  • the multi-carrier based reverse power control method determines the forward carrier and the reverse carrier corresponding to each service, and uses a corresponding power policy for each service. Compared with the prior art, the power loss of the terminal can be effectively reduced, and the QoS quality of the service is improved.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Description

基于多载波的反向功率控制方法 技术领域 本发明涉及通信领域， 尤其涉及一种基于多载波的反向功率控制方法。 背景技术 在无线通信系统中， 不同的月艮务具有不同的月艮务质量要求， 并且才艮据业 务的服务质量要求， 可以将业务分为不同的业务类型。 例如， 可以将业务分 为尽力交付（ Best Effort, 简称为 BE )流、 保证吞吐量（ Assured Forwarding, 简称为 AF ) 流和时延敏感 （Expedited Forwarding, 简称为 EF ) 流， 其中， AF流和 EF流统称为 QoS流。 其中， BE 流能够忍受较高的端到端延迟， 并且对误比特率 （Bit Error
Rate, 简称为 BER )的要求较氐。例如， 文件传输协议（ File Transfer Protocol, 简称为 FTP ) (也称为文件下载） 和超文本传送协议 ( HyperText Transport Protocol, 简称为 HTTP ) (也称为网页浏览） 均为 BE流。
AF流（例如， 视频会议产生的视频流） 与 BE流类似， 能够忍受较高 的端到端延迟， 但对 BER的要求较高， 并且对最小平均吞吐量的要求较高。
EF 流对吞吐量的要求较低， 但对端到端时延要求较高。 例如， 网络电 话 ( Voice over Internet Protocol , 简称为 VoIP ) 业务和可视电话 ( Video Telephone, 简称为 VT ) 业务均为 EF流。 目前， 在 DOREVB系统中， 其主要使用多载波技术。 当用户同时请求 多个业务时， 网络侧会为每个 QoS业务分配一个载波， 即， 将每个 QoS业 务承载在单一载波上， 并对每个业务釆用相同的功率控制策略。 由于针对不 同的业务， 业务的功率控制策略各有不同， 如果请求的多种业务类型不同， 但此时网络侧仍对每个业务釆用相同的功率控制策略， 特别是同时存在 QoS 业务和非 QoS业务时， 就会造成终端资源的浪费， 并影响业务的 艮务质量。 发明内容 考虑到相关技术中存在的网络侧对用户请求的多个业务釆用相同功率 控制策略， 造成终端资源的浪费， 并影响业务的服务质量的问题而提出本发 明， 为此， 本发明的主要目的在于提供一种基于多载波的反向功率控制方法 及装置， 以解决上述问题。 根据本发明的一个方面， 提供了一种基于多载波的反向功率控制方法， 用于接入网对终端请求的多个业务进行功率控制。 根据本发明的基于多载波的反向功率控制方法包括：接入网为业务确定 前向载波， 建立前向载波对应的反向载波与前向载波之间的对应关系， 并^ 1 前向载波和对应关系发送给终端； 接入网根据业务的业务类型， 确定业务的 功率控制命令； 接入网通过前向载波将业务的功率控制命令发送给终端。 其中， 在接入网为业务确定前向载波之前， 该方法还可以包括： 终端向 接入网发送接入请求， 请求建立业务的前向业务信道， 其中， 接入请求中携 带有业务的业务类型信息；接入网根据接入请求， 建立业务的前向业务信道， 前向业务信道 载在前向载波上。 其中 ,接入网通过前向载波将业务的功率控制命令发送给终端的处理可 以包括： 接入网通过 7 载在前向载波上的前向业务信道将业务的功率控制命 令发送给终端。 此外， 在该方法中， 确定功率控制命令的处理可以包括： 居功率控制 策略和 /或功率控制参数确定功率控制命令。 优选地， 在接入网将业务的功率控制命令发送给终端之后， 该方法还可 以包括： 终端 居前向载波和对应关系， 确定前向载波对应的反向载波； 终 端在反向载波上利用功率控制命令调整业务的反向业务信道导频功率。 根据本发明的另一方面， 提供了一种基于多载波的反向功率控制方法， 用于接入网对终端请求的多个业务进行功率控制。 根据本发明的基于多载波的反向功率控制方法包括： 对于每个业务，接 入网 居该业务的业务类型， 确定业务的功率控制命令； 终端确定业务的反 向载波， 建立反向载波与反向载波对应的前向载波之间的对应关系， 并^ 1反 向载波和对应关系发送给接入网； 接入网才艮据反向载波和对应关系， 确定反 向载波对应的前向载波， 将业务的功率控制命令通过前向载波发送给终端。 其中， 接入网将业务的功率控制命令通过前向载波发送给终端之前， 该 方法还可以包括： 终端向接入网发送接入请求， 请求建立业务的前向业务信 道， 其中， 接入请求中携带有业务的业务类型信息； 接入网根据接入请求， 建立业务的前向业务信道， 其中， 前向业务信道 7 载在前向载波上。 此外，接入网通过前向载波将业务的功率控制命令发送给终端的处理可 以包括： 接入网通过 7 载在前向载波上的前向业务信道将业务的功率控制命 令发送给终端。 此外， 确定功率控制命令的处理可以包括： 居功率控制策略和 /或功 率控制参数确定功率控制命令。 优选地， 在接入网将业务的功率控制命令发送给终端之后， 该方法还可 以包括： 终端在反向载波上利用功率控制命令调整业务的反向业务信道导频 功率。 优选地， 在该方法中， 可以通过终端通过以下消息之一将反向载波和对 应关系通知给接入网： 业务信道建立完成响应消息、 协商消息。 借助本发明的上述至少一个技术方案 ,通过确定出每个业务对应的前向 载波和反向载波， 并对每个业务釆用相应的功率策略， 相比于现有技术， 可 以有效降低终端的功率损耗， 提高业务的 QoS质量。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中： 图 1 是才艮据本发明方法实施例一的基于多载波的反向功率控制方法的 流程图； 图 2 是根据本发明方法实施例二的基于多载波的反向功率控制方法的 流程图； 图 3 是根据本发明方法实施例二的基于多载波的反向功率控制方法的 详细处理流程图。 具体实施方式 如上所述， 目前， 在使用多载波技术的网络系统中， 当用户同时请求包 括 QoS月艮务的多个业务时， 网络侧为每个 QoS业务分配一个载波， 并对每 个业务釆用相同的功率控制策略， 会导致终端资源的浪费， 基于此， 本发明 提供一种基于多载波的反向功率控制方案， 对承载不同业务的载波釆用不同 的功率控制策略。 在本发明实施例中， 对于每个 QoS业务， 接入网 （Access Network, 简 称为 AN )或接入终端（ Access Terminal, 简称为 AT ) (即， 上文所述的终端） 中的一方确定出承载该 QoS业务的第一参考载波，并确定出第一参考载波与 第二参考载波的对应关系， 其中， 该第一参考载波与第二参考载波互为前反 向载波， 接入网或终端将该第一参考载波和对应关系通知对方， 之后， 接入 网通过承载在前向载波上的前向业务信道将该业务的功率控制命令发送给终 端， 终端在该前向载波对应的反向载波上， 利用接收到的功率控制命令调整 该业务的反向业务信道导频功率。 在不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互组 合。 为了便于理解本发明实施例， 在说明本发明实施例之前， 首先对现有技 术中的方法进行举例说明。 例如， 在多载波的网络系统中， 用户向网络侧同 时请求 VT业务和 FTP业务时， 网络侧会将 VT业务 载在一个载波上， 将 FTP业务 载在其它载波上， 并向 VT业务和 FTP业务发送相同的功率控制 策略， 使 VT业务和 FTP业务利用接收到的功率控制策略调整各自业务的反 向业务信道导频功率。 但由于 VT业务属于 EF流， FTP业务属于 BE流， 二 者的业务类型不相同， 并且 VT业务的 QoS要求比 FTP业务的 QoS要求高， 如果对承载 VT业务的反向载波和承载下载业务的反向载波釆用同样的功率 控制策略， 会浪费终端的功率， 并影响 QoS业务的服务质量。 下面将结合附图详细描述本发明实施例的具体实施方式，在具体实现过 程中， 可以通过两种方法实现本发明的基于多载波的反向功率控制方法， 下 面结合方法实施例一和方法实施例二对这两种方法分别进行说明。 方法实施例一 根据本发明实施例， 提供了一种基于多载波的反向功率控制方法。 图 1是根据本发明实施例的基于多载波的反向功率控制方法的流程图， 需要说明的是， 为了便于描述， 在图 1中以步骤的形式示出并描述了本发明 的方法实施例的技术方案， 在图 1中所示出的步骤可以在诸如一组计算机可 执行指令的计算机系统中执行。 虽然在图 1中示出了逻辑顺序， 但是在某些 情况下， 可以以不同于此处的顺序执行所示出或描述的步 4聚。 如图 1所示， 该方法包括以下步 4聚 (步 4聚 S 102至步 4聚 S 106 )。 步 4聚 S 102, 对于用户请求的每个业务， 接入网为该业务确定前向载波， 建立前向载波对应的反向载波与前向载波之间的对应关系， 并^ 1前向载波和 对应关系发送给终端； 步骤 S 104, 接入网 居业务的业务类型， 确定业务的功率控制命令， 其中， 接入网可以根据功率控制策略和 /或功率控制参数来确定功率控制命 令， 并在确定之后产生功率控制命令 （功率控制命令可以是一串比特位）； 步骤 S 106, 接入网通过前向载波将业务的功率控制命令发送给终端， 之后， 终端才艮据前向载波和对应关系， 确定前向载波对应的反向载波， 并在 反向载波上利用功率控制命令调整业务的反向业务信道导频功率。 其中， 功率控制策略可以在系统中预先设定好， 并通过统一的方式进行 标识， 并且每个功率控制策略可以通过功率控制参数来表示。 通过本发明实施例提供的技术方案，通过接入网确定出每个业务对应的 前向载波和反向载波， 并在前向载波上^ 1功控命令（即， 功率控制命令） 通 知终端， 使得终端可以在对应的反向载波上调整该业务的反向业务信道导频 功率， 有效降低了终端的功率损耗， 提高业务的 QoS质量。 在具体实施过程中， 用户同时向接入网请求多个业务， 会向接入网发送 接入请求， 其中， 该接入请求中携带有多个业务的业务类型信息， 请求建立 各业务的前向业务信道， 接入网根据该接入请求， 为各业务分别指定前向载 波和该前向载波对应的反向载波，并为不同的业务建立不同的前向业务信道， 为了清楚描述， 现以业务 1为例对本发明实施例进行说明。 接入网为业务 1指定前向载波，建立该前向载波与该前向载波对应的反 向载波之间的对应关系， 并通过控制信道将该前向载波和对应关系发送给终 端； 接入网根据接入请求中的业务 1的业务类型信息， 确定出业务 1的功率 控制策略和 /或功率控制参数， 并产生功率控制命令， 接入网在为业务 1所指 定的前向载波上建立前向业务信道， 并通过该前向业务信道将功率控制命令 发送给终端。 相应地， 终端在控制信道上接收业务 1的前向载波和对应关系， 通过该 前向载波和对应关系， 解析出该前向载波对应的反向载波， 并在 载在前向 载波上的前向业务信道接收业务 1的功率控制命令， 之后， 终端在解析出的 反向载波上利用接收到的功率控制命令调整业务 1 的反向业务信道导频功 率。 这样， 通过本发明实施例提供的方法， 终端可以 居不同载波 载的不 同业务， 釆用不同的功率控制策略， 对各业务的反向业务信道导频功率进行 调整。 方法实施例二 根据本发明实施例， 提供一种基于多载波的反向功率控制方法。 图 2是根据本发明实施例的基于多载波的反向功率控制方法的流程图， 如图 2所示， 包括以下处理 (步骤 S202至步骤 S206 )。 步骤 S202, 对于用户请求的每个业务， 接入网 居业务的业务类型， 确定业务的功率控制命令， 其中， 接入网可以才艮据功率控制策略和 /或功率控 制参数来确定功率控制命令， 并在确定之后产生功率控制命令 （功率控制命 令可以是一串比特位）； 步骤 S204, 终端确定业务的反向载波， 建立反向载波与反向载波对应 的前向载波之间的对应关系， 并将反向载波和对应关系发送给接入网； 步骤 S206, 接入网根据反向载波和对应关系， 确定反向载波对应的前 向载波， 将业务的功率控制命令通过前向载波发送给终端， 终端在反向载波 上利用功率控制命令调整业务的反向业务信道导频功率。 其中，功率控制策略可以预先在系统中设置，通过统一的方式进行标识， 并且每个功率控制策略可以通过功率控制参数来表示。 通过本发明实施例提供的技术方案，终端确定出每个业务对应的前向载 波和反向载波， 接入网通过在前向载波上通知终端各业务所釆用功率策略， 使得终端可以在对应的反向载波上调整该业务的反向业务信道导频功率， 有 效降低了终端的功率损耗， 提高业务的 QoS质量。 在具体实施过程中， 用户同时向接入网请求多个业务， 会向接入网发送 接入请求， 其中， 该接入请求中携带有多个业务的业务类型信息， 请求建立 各业务的前向业务信道， 为了清楚描述， 现以业务 1为例对本发明实施例进 行说明。 接入网根据接入请求中的业务 1的业务类型信息，确定出业务 1的功率 控制策略和 /或功率控制参数， 并由此产生功率控制命令； 终端为业务 1指定 反向载波， 建立该反向载波与该反向载波对应的前向载波之间的对应关系， 并通过业务信道将该反向载波和对应关系发送给接入网， 具体地， 终端可以 通过以下消息之一将反向载波和对应关系通知给接入网： 业务信道建立完成 响应消息、 协商消息； 接入网根据反向载波和对应关系， 确定反向载波对应 的前向载波， 在该前向载波上建立前向业务信道， 并通过该前向业务信道^ 1 功率控制命令发送给终端。 相应地，终端在 载在前向载波的前向业务信道上接收业务 1的功率控 制命令， 之后， 终端在指定的反向载波上利用接收到的功率控制命令调整业 务 1的反向业务信道导频功率。 这样， 通过本发明实施例提供的方法， 终端可以 居不同载波 载的不 同业务， 釆用不同的功率控制策略， 对各业务的反向业务信道导频功率进行 调整。 图 3描述了根据本发明实施例的 AT通过消息通知 AN承载 QoS业务的 载波的流程， 如图 3所示， 包括以下处理步骤 (步骤 S301至步骤 S306 )。 步骤 S301 , AT有 QoS业务需求时， 向 AN发送 QoS业务请求， 请求 建立业务通道， 其中， 该 QoS业务请求中携带有各业务的业务类型信息。 步骤 S302, AN会才艮据当前系统的资源， 确定出可以与 AT建立 QoS 业务通道 （即， 上文所述的前向业务信道）， 并在前向载波上建立 AN和 AT 之间的 QoS业务通道。 步骤 S303 , AT和 AN完成 QoS业务通道建立后， AT为各业务的分别 指定反向载波和该反向载波对应的前向载波间的对应关系， 通知 AN 载各 业务的反向载波和相应的对应关系。 步骤 S304, AN根据反向载波和对应关系， 确定反向载波对应的前向载 波。 步骤 S305 , AN通过该前向载波向终端发送功率控制命令， 对 AT承载 QoS业务釆用特定的反向功率控制策略， 确定提高还是降低 AT相应载波的 功率控制。 步骤 S306, AT才艮据在前向载波上获取功率控制命令， 并在该前向载波 对应的反向载波上进行功率控制， 即在反向载波上利用接收到的功率控制命 令调整业务的反向业务信道导频功率。 如上所述， 借助于本发明实施例提供的基于多载波的反向功率控制方 法， 通过确定出每个业务对应的前向载波和反向载波， 并对每个业务釆用相 应的功率策略， 相比于现有技术， 可以有效降低终端的功率损耗， 提高业务 的 QoS质量。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种基于多载波的反向功率控制方法， 用于接入网对终端请求的多个业 务进行功率控制， 其特征在于， 对于每个业务， 所述方法包括：
接入网为所述业务确定前向载波，建立所述前向载波对应的反向载 波与所述前向载波之间的对应关系， 并将所述前向载波和所述对应关系 发送给所述终端； 所述接入网才艮据所述业务的业务类型，确定所述业务的功率控制命 令；
所述接入网通过所述前向载波将所述业务的功率控制命令发送给 所述终端。
2. 根据权利要求 1所述的方法， 其特征在于， 所述接入网为所述业务确定 前向载波之前， 所述方法还包括：
所述终端向所述接入网发送接入请求 ,请求建立所述业务的前向业 务信道， 其中， 所述接入请求中携带有所述业务的业务类型信息； 所述接入网 居所述接入请求， 建立所述业务的前向业务信道， 所 述前向业务信道 载在所述前向载波上。
3. 根据权利要求 2所述的方法， 其特征在于， 所述接入网通过所述前向载 波将所述业务的功率控制命令发送给所述终端包括：
所述接入网通过^载在所述前向载波上的所述前向业务信道将所 述业务的功率控制命令发送给所述终端。
4. 根据权利要求 1所述的方法， 其特征在于， 确定所述功率控制命令的处 理包括：
根据功率控制策略和 /或功率控制参数确定所述功率控制命令。
5. 根据权利要求 1至 4中任一项所述的方法， 其特征在于， 所述接入网将 所述业务的功率控制命令发送给所述终端之后， 所述方法还包括：
所述终端 -据所述前向载波和所述对应关系，确定所述前向载波对 应的反向载波； 所述终端在所述反向载波上利用所述功率控制命令调整所述业务 的反向业务信道导频功率。
6. 一种基于多载波的反向功率控制方法， 用于接入网对终端请求的多个业 务进行功率控制， 其特征在于， 对于每个业务， 所述方法包括：
接入网根据所述业务的业务类型， 确定所述业务的功率控制命令； 所述终端确定所述业务的反向载波，建立所述反向载波与所述反向 载波对应的前向载波之间的对应关系， 并将所述反向载波和所述对应关 系发送给所述接入网；
所述接入网才艮据所述反向载波和所述对应关系，确定所述反向载波 对应的前向载波， 将所述业务的功率控制命令通过所述前向载波发送给 所述终端。
7. 根据权利要求 6所述的方法， 其特征在于， 所述接入网将所述业务的功 率控制命令通过所述前向载波发送给所述终端之前， 所述方法还包括： 所述终端向所述接入网发送接入请求 ,请求建立所述业务的前向业 务信道， 其中， 所述接入请求中携带有所述业务的业务类型信息； 所述接入网 居所述接入请求， 建立所述业务的前向业务信道， 其 中， 所述前向业务信道^载在所述前向载波上。
8. 根据权利要求 7所述的方法， 其特征在于， 所述接入网通过所述前向载 波将所述业务的功率控制命令发送给所述终端包括：
所述接入网通过^载在所述前向载波上的所述前向业务信道将所 述业务的功率控制命令发送给所述终端。
9. 根据权利要求 6所述的方法， 其特征在于， 确定所述功率控制命令的处 理包括：
根据功率控制策略和 /或功率控制参数确定所述功率控制命令。
10. 根据权利要求 6至 9中任一项所述的方法， 其特征在于， 所述接入网将 所述业务的功率控制命令发送给所述终端之后， 所述方法还包括：
所述终端在所述反向载波上利用所述功率控制命令调整所述业务 的反向业务信道导频功率。
1. 根据权利要求 6至 9中任一项所述的方法， 其特征在于， 通过终端通过 以下消息之一 ^！夺所述反向载波和所述对应关系通知给所述接入网： 业务 信道建立完成响应消息、 协商消息。
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