WO2012100549A1 - Cqi上报方法、获取cqi的方法、系统、终端及基站 - Google Patents

Cqi上报方法、获取cqi的方法、系统、终端及基站 Download PDF

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Publication number
WO2012100549A1
WO2012100549A1 PCT/CN2011/079908 CN2011079908W WO2012100549A1 WO 2012100549 A1 WO2012100549 A1 WO 2012100549A1 CN 2011079908 W CN2011079908 W CN 2011079908W WO 2012100549 A1 WO2012100549 A1 WO 2012100549A1
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WIPO (PCT)
Prior art keywords
cqi
terminal
base station
channel quality
current
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Ceased
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PCT/CN2011/079908
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English (en)
French (fr)
Inventor
鱼洋
张舜卿
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP11857098.5A priority Critical patent/EP2670188A4/en
Publication of WO2012100549A1 publication Critical patent/WO2012100549A1/zh
Priority to US13/952,048 priority patent/US20130315120A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/24—Monitoring; Testing of receivers with feedback of measurements to the transmitter
    • 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

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a CQI (Channel Quarity Indecation) method, a method, a system, a terminal, and a base station for acquiring CQI.
  • CQI Channel Quarity Indecation
  • the HARQ Hybrid Automatic Repeat Request
  • the terminal requests the base station through HARQ. Pass data.
  • the base station needs the UE (User Equipment) to report the channel quality of the transmission data, and the UE feeds back the channel quality information to the base station through the CQI.
  • the UE usually reports the CQI according to a certain period. However, when the UE is in the state of no data transmission, the UE still reports the CQI according to the period, which will result in energy loss on the UE side.
  • the base station can change the frequency of CQI reported by the UE through the process of air interface reconfiguration, the frequent reconfiguration process according to the HARQ situation will also consume the power consumption of the UE side, and is likely to cause communication interruption of the UE side user. Summary of the invention
  • the embodiments of the present invention provide a CQI reporting method, a method, a system, a terminal, and a base station for acquiring CQI, so as to solve the problem that the existing CQI reporting manner easily causes terminal energy loss.
  • a channel quality indication CQI reporting method includes:
  • the CQI is reported to the base station according to the CQI reporting period within a preset time; when the preset time is exceeded, the CQI and the previous report in the current CQI reporting period are determined. If the difference of the CQI is less than the pre-configured threshold, if it is less than, the CQI in the current reporting period is stopped from being sent to the base station.
  • a method for obtaining a channel quality indicator CQI includes:
  • the channel quality indication information obtained when the terminal reports the CQI is used as the current channel quality indication information.
  • a system for channel quality indication CQI reporting includes: a terminal and a base station,
  • the terminal after completing the downlink synchronization, reports the CQI to the base station according to the CQI reporting period within a preset time.
  • the preset time is exceeded, the difference between the CQI in the current CQI reporting period and the previous reported CQI is determined. Whether the value is less than the pre-configured threshold, if not, stopping sending the CQI in the current uplink period to the base station;
  • the base station is configured to detect, according to the transmission time interval TTI, the CQI reported by the terminal, and if the CQI reported by the terminal is detected, obtain the current channel quality indication information from the CQI, if the CQI reported by the terminal is not detected.
  • the channel quality indication information obtained when the terminal reports the CQI last time is used as the current channel quality indication information.
  • a terminal for channel quality indication CQI reporting includes:
  • the reporting unit is configured to report the CQI to the base station according to the CQI reporting period in the preset time after the terminal completes the downlink synchronization;
  • a determining unit configured to determine, when the preset time is exceeded, whether a difference between a CQI in a current CQI reporting period and a previously reported CQI is less than a pre-configured threshold
  • control unit configured to: when the determining unit determines that a difference between a CQI in a current CQI reporting period and a previously reported CQI is less than a pre-configured threshold, controlling the reporting unit to stop sending the current uplink period to the base station CQI inside.
  • a base station comprising: a detecting unit, configured to detect a CQI on the terminal according to a transmission time interval;
  • An obtaining unit configured to: obtain the current channel quality indication information from the CQI if the CQI reported by the terminal is detected, and if the CQI reported by the terminal is not detected, obtain the current CQI when the terminal reports the CQI
  • the channel quality indication information is used as current channel quality indication information.
  • the terminal after completing the downlink synchronization, the terminal reports the CQI to the base station according to the CQI reporting period within a preset time. When the preset time is exceeded, the CQI and the current CQI reporting period are determined. Whether the difference of the CQI reported once is less than the pre-configured threshold. If it is less than, the CQI in the current reporting period is stopped from being sent to the base station.
  • the base station can flexibly select whether to report the CQI to the base station according to whether the CQI changes, instead of reporting the CQI in each CQI reporting period, so when the CQI of the terminal does not change significantly, the CQI is reduced. The number of reports can reduce the transmit power of the terminal, effectively improve the uplink transmission capacity, and reduce the uplink transmission interference.
  • FIG. 1 is a flowchart of a first embodiment of a CQI reporting method according to the present invention
  • FIG. 2A is a flowchart of a second embodiment of a CQI reporting method according to the present invention.
  • 2B is a flowchart of an embodiment of a method for acquiring CQI according to the present invention
  • FIG. 3 is a block diagram of an embodiment of a system for reporting CQI according to the present invention.
  • FIG. 4 is a block diagram of a first embodiment of a terminal for reporting CQI according to the present invention.
  • FIG. 5 is a block diagram of a second embodiment of a terminal for reporting CQI according to the present invention.
  • FIG. 6 is a block diagram of a third embodiment of a terminal for reporting CQI according to the present invention.
  • FIG. 7 is a block diagram of an embodiment of a base station of the present invention. detailed description
  • the following embodiments of the present invention provide a CQI reporting method, a method, system, terminal, and base station for acquiring CQI.
  • FIG. 1 it is a flowchart of a first embodiment of a CQI reporting method according to the present invention:
  • Step 101 After completing the downlink synchronization, the terminal reports the CQI to the base station according to the CQI reporting period within a preset time.
  • the terminal needs to continuously send a CQI for a period of time to detect the channel quality, so the preset time is the protection time of the initial time.
  • Step 102 When the preset time is exceeded, it is determined whether the difference between the CQI in the current CQI reporting period and the previous reported CQI is less than the pre-configured threshold. If the value is less than, the step 103 is performed;
  • the terminal When the timer expires, the terminal enters the dynamic adjustment state of the CQI. At this time, the terminal determines whether to report the CQI to the base station according to the change of the CQI.
  • the CQI in the current CQI reporting period (CQI cycle) is mentioned in the embodiment of the present invention. Whether the difference of the CQI reported in the previous time is less than the pre-configured threshold may not only mean that the two CQIs are exactly the same, but also that the current CQI and the previous CQI of the previous one are within a certain range, indicating that they are in two adjacent The CQI did not change much during the period.
  • Step 103 Stop sending the CQI in the current CQI reporting period to the base station.
  • Step 104 Send the CQI in the current CQI reporting period to the base station.
  • FIG. 2A it is a flowchart of a second embodiment of a CQI reporting method according to the present invention:
  • Step 201 Receive a radio bearer message sent by the base station, where the radio bearer message includes a preset time and a pre-configured threshold.
  • the base station transmits a radio bearer message (e.g., Radio Bear Setup message, or Radio Bear Reconfiguration) to the terminal.
  • the radio bearer message includes a preset time T1. Since the transmission channel is unstable at the initial time after the downlink synchronization is completed, the terminal needs to continuously transmit the CQI for a period of time to detect the channel quality, so T1 is the initial time. Protection time.
  • the radio bearer message further includes a pre-configured threshold, where the pre-configured threshold is used to determine whether the CQI in the current period is compared with the CQI in the previous period, and the pre-configured threshold may include uplink pre-configuration. Threshold and downstream pre-configured thresholds.
  • the terminal In the initial synchronization process between the terminal and the network side, although the terminal already has the capability of reporting CQI, since the base station side has not completed the initial synchronization, there may be a case of demodulating the CQI by mistake, so the terminal may not upload the CQI before the synchronization with the base station is completed.
  • Step 202 Read the preset time and the pre-configured threshold from the radio bearer message.
  • Step 203 Set a timer according to the preset time of the reading.
  • Step 204 When the terminal completes downlink synchronization, the timer is started.
  • Step 205 After the terminal completes the downlink synchronization, the CQL is reported to the base station according to the CQI reporting period before the timer expires.
  • Step 206 When the timer expires, it is determined whether the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than the pre-configured threshold. If the value is less than, the step 207 is performed; otherwise, step 208 is performed.
  • the terminal enters the dynamic adjustment state of the CQI.
  • the terminal determines whether to report the CQI to the base station according to the change of the CQI, that is, determines the CQI and the former in the current CQI reporting period. Whether the difference of the CQI reported once is less than the pre-configured threshold.
  • the CQI in the current CQI reporting period may be the same as the CQI of the previous previous 4 ⁇ , or may be the current CQI and the previous previous 4 ⁇ .
  • the change in CQI is within a certain range.
  • the current CQI in the current CQI is CQI now, and the previous CQI is CQI last. If CQI now is approximately equal to CQI last, the difference between CQI now and CQI last is within the preset range. , then no longer report CQI now, and assign CQI last equal to CQI now.
  • Step 207 Stop sending the CQI in the current CQI reporting period to the base station.
  • the terminal no longer reports the CQI in the current CQI reporting period to the base station, thereby reducing the number of CQI reports. , reduce the transmission power of the terminal, effectively improve the uplink transmission capacity, and reduce the uplink transmission interference.
  • Step 208 Send the CQI in the current CQI reporting period to the base station.
  • a flow of an embodiment of a method for obtaining a CQI on a base station side corresponding to an embodiment of a method for reporting a CQI of a terminal in the present invention is as follows:
  • Step 211 The base station detects the CQI of the terminal according to Transmission (Transmission Time Interval).
  • the base station detects the CQI reported by the UE at each port.
  • Step 212 Determine whether the CQI reported by the terminal is detected in the current frame. If yes, go to step 213; otherwise, go to step 214.
  • the base station may not detect the CQI in some ports.
  • Step 213 Obtain channel quality indication information from the detected CQI as current channel quality indication information, and perform step 215.
  • Step 214 The channel quality indication information obtained when the terminal reports the CQI last time is used as the current channel quality indication information.
  • the base station uses the channel quality indication information obtained when the terminal reports the CQI the previous time as the current channel quality indication information.
  • Step 215 Perform user data scheduling according to current channel quality indication information.
  • the present invention also provides an embodiment of a system, a terminal, and a base station for CQI reporting.
  • FIG. 3 it is a block diagram of an embodiment of a CQI reporting system according to the present invention:
  • the system includes: a terminal 310 and a base station 320.
  • the terminal 310 after completing the downlink synchronization, reports the CQI to the base station 320 according to the CQI reporting period within a preset time, and when the preset time is exceeded, determines the CQI and the previous report in the current CQI reporting period. Whether the difference of the CQI is less than a pre-configured threshold, if not, stopping sending the CQI in the current reporting period to the base station;
  • the base station 320 is configured to detect, according to the transmission time interval TTI, the CQI reported by the terminal, and if the CQI reported by the terminal is detected, obtain the current channel quality indication information from the CQI, if the terminal does not detect the reported
  • the CQI is used as the current channel quality indication information by using the channel quality indication information obtained when the terminal reports the CQI.
  • the terminal 310 is further configured to receive a radio bearer message sent by the base station 320, and read the preset time and the pre-configured threshold from the radio bearer message, according to the preset time read.
  • a timer is set, and when the terminal 310 completes downlink synchronization, the timer is turned on.
  • FIG. 4 it is a block diagram of a first embodiment of a CQI reporting terminal according to the present invention:
  • the terminal includes: a reporting unit 410, a determining unit 420, and a control unit 430.
  • the reporting unit 410 is configured to press the preset time after the terminal completes the downlink synchronization. Reporting CQI to the base station according to the CQI reporting period;
  • the determining unit 420 is configured to determine, when the preset time is exceeded, whether the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than a pre-configured threshold;
  • the control unit 430 is configured to: when the determining unit 420 determines that the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than the pre-configured threshold, the reporting unit stops controlling to send the current reporting period to the base station.
  • CQI Referring to FIG. 5, it is a block diagram of a second embodiment of a CQI reporting terminal according to the present invention:
  • the terminal includes: a receiving unit 510, a reading unit 520, a reporting unit 530, a determining unit 540, and a control unit 550.
  • the receiving unit 510 is configured to receive a radio bearer message sent by the base station, where the radio bearer message includes the preset time and the pre-configured threshold.
  • the reading unit 520 is configured to read the preset time and the pre-configured threshold from the radio bearer message.
  • the reporting unit 530 is configured to: after the terminal completes downlink synchronization, according to the preset time
  • the CQI reporting period reports the CQI to the base station
  • the determining unit 540 is configured to determine, when the preset time is exceeded, whether the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than a pre-configured threshold;
  • the control unit 550 is configured to: when the determining unit 540 determines that the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than the pre-configured threshold, the reporting unit stops controlling to send the current reporting period to the base station. CQI.
  • FIG. 6 is a block diagram of a third embodiment of a CQI reporting terminal according to the present invention:
  • the terminal includes a receiving unit 610, a reading unit 620, a setting unit 630, an opening unit 640, a reporting unit 650, a determining unit 660, and a control unit 670.
  • the receiving unit 610 is configured to receive a radio bearer message sent by the base station, where the radio bearer message includes a preset time;
  • the reading unit 620 is configured to read the preset time from the radio bearer message, and the setting unit 630 is configured to set a timer according to the read preset time;
  • the initiating unit 640 is configured to: when the terminal completes the downlink synchronization, the timer is started; the reporting unit 650 is configured to: after the timer expires, report the CQI to the base station according to the CQI reporting period before the timer expires. ;
  • the determining unit 660 is configured to determine, when the timer expires, whether the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than a pre-configured threshold;
  • the control unit 670 is configured to: when the determining unit determines that the difference between the CQI in the current CQI reporting period and the previously reported CQI is less than the pre-configured threshold, control the reporting unit to stop sending the current uplink to the base station. CQI within the period.
  • FIG. 7 a block diagram of an embodiment of a base station according to the present invention is shown:
  • the base station includes: a detecting unit 710, a reading unit 720, and a scheduling unit 730.
  • the detecting unit 710 is configured to detect, according to the transmission time interval, the CQI reported by the terminal, where the acquiring unit 720 is configured to obtain the current channel quality indication information from the CQI if the CQI reported by the terminal is detected, if not The CQI reported by the terminal is detected, and the channel quality indication information obtained when the terminal reports the CQI is used as the current channel quality indication information.
  • the base station may further include: a scheduling unit 730, configured to perform user data scheduling according to the current channel quality indication information.
  • a scheduling unit 730 configured to perform user data scheduling according to the current channel quality indication information.
  • the base station can flexibly select whether to report the CQI to the base station according to whether the CQI changes, instead of reporting the CQI in each CQI reporting period, so the CQI of the terminal does not change significantly.
  • the transmit power of the terminal can be reduced, the uplink transmission capacity can be effectively increased, and the uplink transmission interference can be reduced.
  • the techniques in the embodiments of the present invention can be implemented by means of software plus a necessary general hardware platform.
  • the technical solution in the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention or in some portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.

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  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Description

CQI上报方法、 获取 CQI的方法、 系统、 终端及基站 技术领域
本发明涉及无线通信技术领域， 特别是涉及一种 CQI ( Channel Quallity Indecation, 信道质量指示）上 4艮方法、 获取 CQI的方法、 系统、 终端及基站。 背景技术
在 UMTS ( Universal Mobile Telecommunications System, 通用移动通信 系统）中， HARQ ( Hybrid Automatic Repeat Request, 混合自动重传）技术用 来保证数据传输的可靠性， 当前一次传输数据失败时， 终端通过 HARQ请求 基站重传数据。在通过 HARQ实现数据重传时，基站需要 UE( User Equipment, 用户终端）上报传输数据的信道质量， UE通过 CQI将信道质量信息反馈给 基站。
现有技术中， UE通常按照一定的周期上报 CQI, 但是当 UE处于无数据 传输的状态时， UE仍然按照周期上报 CQI将导致 UE侧的能量损耗。 虽然基 站可以通过空口重配置的过程改变 UE上报 CQI的频度，但是根据 HARQ情 况频繁进行重配过程也将消耗 UE侧的功耗，且容易造成 UE侧用户的通信中 断。 发明内容
本发明实施例提供了一种 CQI上报方法、 获取 CQI的方法、 系统、 终端 及基站， 以解决现有 CQI上报方式容易造成终端能量损耗的问题。
为了解决上述技术问题， 本发明实施例公开了如下技术方案：
一种信道质量指示 CQI上报方法， 包括：
终端完成下行同步后，在预设时间内按照 CQI上报周期向基站上报 CQI; 当超过所述预设时间时，判断当前 CQI上报周期内的 CQI与前一次上报 的 CQI的差值是否小于预配置门限， 若小于， 则停止向基站发送所述当前上 报周期内的 CQI。
一种获取信道质量指示 CQI的方法， 包括：
按照传输时间间隔 ΤΉ检测终端上报的 CQI;
若检测到所述终端上报的 CQI , 从所述 CQI中获得当前的信道质量指示 信息；
若没有检测到所述终端上报的 CQI, 将所述终端前一次上报 CQI时获得 的信道质量指示信息作为当前信道质量指示信息。
一种用于信道质量指示 CQI上报的系统， 包括： 终端和基站，
所述终端， 用于完成下行同步后， 在预设时间内按照 CQI上报周期向基 站上报 CQI, 当超过所述预设时间时， 判断当前 CQI上报周期内的 CQI与前 一次上报的 CQI的差值是否小于预配置门限， 若小于， 则停止向基站发送所 述当前上 ·^艮周期内的 CQI;
所述基站， 用于按照传输时间间隔 TTI检测终端上报的 CQI, 若检测到 所述终端上报的 CQI, 从所述 CQI中获得当前的信道质量指示信息， 若没有 检测到所述终端上报的 CQI, 将所述终端前一次上报 CQI时获得的信道质量 指示信息作为当前信道质量指示信息。
一种用于信道质量指示 CQI上报的终端， 包括：
上报单元， 用于所述终端完成下行同步后， 在预设时间内按照 CQI上报 周期向基站上报 CQI;
判断单元，用于当超过所述预设时间时，判断当前 CQI上报周期内的 CQI 与前一次上报的 CQI的差值是否小于预配置门限；
控制单元，用于当所述判断单元判断当前 CQI上报周期内的 CQI与前一 次上报的 CQI的差值小于预配置门限时， 控制所述上报单元停止向基站发送 所述当前上 ·^艮周期内的 CQI。
一种基站， 包括： 检测单元， 用于按照传输时间间隔 ΤΉ检测所述终端上 ^艮的 CQI;
获取单元， 用于若检测到所述终端上报的 CQI, 从所述 CQI中获得当前 的信道质量指示信息， 若没有检测到所述终端上报的 CQI, 将所述终端前一 次上报 CQI时获得的信道质量指示信息作为当前信道质量指示信息。
由上述实施例可以看出， 本发明实施例中终端完成下行同步后， 在预设 时间内按照 CQI上报周期向基站上报 CQI,当超过预设时间时，判断当前 CQI 上报周期内的 CQI与前一次上报的 CQI的差值是否小于预配置门限，若小于， 则停止向基站发送当前上报周期内的 CQI。 本发明实施例中， 由于基站可以 根据 CQI是否发生变化的情况灵活选择是否向基站上报 CQI, 而不是在每个 CQI上报周期均上报 CQI, 因此当终端的 CQI未发生明显变动时， 通过减少 CQI上报次数， 可以降低终端的发射功率， 有效提升上行传输容量， 减少上 行传输干扰。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案， 下面将对实 施例或现有技术描述中所需要使用的附图作筒单地介绍， 显而易见地， 下面 描述中的附图仅仅是本发明的一些实施例， 对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下， 还可以根据这些附图获得其他的附图。
图 1为本发明 CQI上报方法的第一实施例流程图；
图 2A为本发明 CQI上报方法的第二实施例流程图；
图 2B为本发明获取 CQI的方法的实施例流程；
图 3为本发明用于 CQI上报的系统的实施例框图；
图 4为本发明用于 CQI上报的终端的第一实施例框图；
图 5为本发明用于 CQI上报的终端的第二实施例框图；
图 6为本发明用于 CQI上报的终端的第三实施例框图；
图 7为本发明基站的实施例框图。 具体实施方式
本发明如下实施例提供了一种 CQI上报方法、 获取 CQI的方法、 系统、 终端及基站。
为了使本技术领域的人员更好地理解本发明实施例中的技术方案， 并使 本发明实施例的上述目的、 特征和优点能够更加明显易懂， 下面结合附图对 本发明实施例中技术方案作进一步详细的说明。
参见图 1 , 为本发明 CQI上报方法的第一实施例流程图：
步骤 101 : 终端完成下行同步后， 在预设时间内按照 CQI上报周期向基 站上报 CQI。
在下行同步完成后的初始时刻， 传输信道不稳定， 因此需要终端持续发 送一段时间的 CQI, 以检测信道质量情况， 因此预设时间即为初始时刻的保 护时间。
步骤 102: 当超过预设时间时， 判断当前 CQI上报周期内的 CQI与前一 次上报的 CQI的差值是否小于预配置门限， 若小于， 则执行步骤 103; 否贝 执行步骤 104。
当定时器超时时， 终端进入 CQI的动态调整状态， 此时终端根据 CQI的 变化情况决定是否向基站上报 CQI, 本发明实施例中提到的判断当前 CQI上 报周期（ CQI cycle )内的 CQI与前一次上报的 CQI的差值是否小于预配置门 限， 可以不仅指两个 CQI完全相同， 也可以是当前 CQI与前一次上 4艮的 CQI 的变化在一定范围内， 则表示在两个相邻的周期内 CQI变动不大。
步骤 103: 停止向基站发送当前 CQI上报周期内的 CQI。
当前 CQI上 ·^艮周期内的 CQI与前一次上 ·^艮的 CQI的差值小于预配置门 限，则终端不再向基站上报当前 CQI上报周期内的 CQI,由此可以减少上 CQI 上报次数， 降低终端的发射功率， 有效提升上行传输容量， 减少上行传输干 扰。 步骤 104: 向基站发送当前 CQI上报周期内的 CQI。 参见图 2A, 为本发明 CQI上报方法的第二实施例流程图：
步骤 201 : 接收基站发送的无线承载消息， 该无线承载消息中包含预设 时间及预配置门限。
当终端与基站建立下行同步时， 基站向终端发送无线承载消息 （例如， Radio Bear Setup (无线承载建立消息 ), 或 Radio Bear Reconfiguration (无线 承载重置消息））。 该无线承载消息中包含了预设时间 T1 , 由于在下行同步完 成后的初始时刻， 传输信道不稳定， 因此需要终端持续发送一段时间的 CQI, 以检测信道质量情况， 因此 T1即为初始时刻的保护时间。该无线承载消息中 进一步包括了预配置门限， 预配置门限是用于判断当前周期内的 CQI与前一 个周期内的 CQI相比， 是否需要上报的标准， 该预配置门限可以分别包括上 行预配置门限和下行预配置门限。
在终端与网络侧初始同步过程中， 虽然终端已经具备上报 CQI的能力， 但是由于基站侧还未完成初始同步， 可能存在误解调 CQI的情况， 因此终端 在与基站进行同步完成前可不上传 CQI。
步骤 202: 从无线承载消息中读取该预设时间及所述预配置门限。
步骤 203: 根据该读取的预设时间设置定时器。
步骤 204: 当终端完成下行同步时， 开启该定时器。
步骤 205: 终端完成下行同步后， 在定时器超时前按照 CQI上报周期向 基站上报 CQL
步骤 206: 当定时器超时时， 判断当前 CQI上报周期内的 CQI与前一次 上报的 CQI的差值是否小于预配置门限， 若小于， 则执行步骤 207; 否则， 执行步骤 208。
当定时器超时时， 终端进入 CQI的动态调整状态， 此时终端根据 CQI的 变化情况决定是否向基站上报 CQI, 即判断当前 CQI上报周期内的 CQI与前 一次上报的 CQI的差值是否小于预配置门限， 例如， 可以是当前 CQI上报周 期内的 CQI与前一次上 4艮的 CQI相同， 也可以是当前 CQI与前一次上 4艮的
CQI的变化在一定范围内。
殳设当前 CQI上 4艮周期内的当前 CQI为 CQI now, 前一次上 4艮的 CQI 为 CQI last, 如果 CQI now近似等于 CQI last, 即 CQI now与 CQI last的差值 在预设的范围内， 则不再上报 CQI now , 并赋值 CQI last等于 CQI now。
步骤 207: 停止向基站发送当前 CQI上报周期内的 CQI。
当前 CQI上 ·^艮周期内的 CQI与前一次上 ·^艮的 CQI的差值小于预配置门 限，则终端不再向基站上报当前 CQI上报周期内的 CQI,由此可以减少上 CQI 上报次数， 降低终端的发射功率， 有效提升上行传输容量， 减少上行传输干 扰。
步骤 208: 向基站发送当前 CQI上报周期内的 CQI。 参见图 2B,为本发明中与终端 CQI上报方法实施例相对应的基站侧的获 取上报 CQI的方法的实施例流程：
步骤 211 : 基站按照 ΤΉ ( Transmission Time Interval, 传输时间间隔 )检 测终端上 4艮的 CQI。
基站在每个 ΤΉ均检测 UE上报的 CQI。
步骤 212: 判断当前 ΤΉ内是否检测到终端上报的 CQI, 若是， 则执行 步骤 213; 否则， 执行步骤 214。
由于终端在 CQI变化不大的情况下可以不上报 CQI, 因此基站可能在某 些 ΤΉ内检测不到 CQI。
步骤 213: 从检测到的 CQI中获得信道质量指示信息作为当前信道质量 指示信息， 执行步骤 215。
步骤 214: 将终端前一次上报 CQI时获得的信道质量指示信息作为当前 信道质量指示信息。 当未检测到终端上报的 CQI时， 则说明信道适量变化不大， 因此基站将 终端前一次上报 CQI时获得的信道质量指示信息默认作为当前信道质量指示 信息。
步骤 215: 根据当前信道质量指示信息进行用户数据调度。 与本发明 CQI上报方法的实施例相对应，本发明还提供了用于 CQI上报 的系统、 终端及基站的实施例。
参见图 3 , 为本发明 CQI上报系统的实施例框图：
该系统包括： 终端 310和基站 320。
其中， 所述终端 310, 用于完成下行同步后， 在预设时间内按照 CQI上 报周期向基站 320上报 CQI, 当超过所述预设时间时， 判断当前 CQI上报周 期内的 CQI与前一次上报的 CQI的差值是否小于预配置门限， 若小于， 则停 止向基站发送所述当前上报周期内的 CQI;
所述基站 320, 用于按照传输时间间隔 TTI检测终端上报的 CQI, 若检 测到所述终端上报的 CQI, 从所述 CQI中获得当前的信道质量指示信息， 若 没有检测到所述终端上报的 CQI, 将所述终端前一次上报 CQI时获得的信道 质量指示信息作为当前信道质量指示信息。
进一步， 所述终端 310, 还用于接收基站 320发送的无线承载消息， 并 从所述无线承载消息中读取所述预设时间及所述预配置门限， 根据所述读取 的预设时间设置定时器， 当终端 310完成下行同步时， 开启所述定时器。
进一步， 所述基站 320, 还用于根据所述当前信道质量指示信息进行用 户数据调度。 参见图 4, 为本发明 CQI上报终端的第一实施例框图：
该终端包括： 上报单元 410、 判断单元 420和控制单元 430。
其中， 上报单元 410, 用于所述终端完成下行同步后， 在预设时间内按 照 CQI上报周期向基站上报 CQI;
判断单元 420, 用于当超过所述预设时间时， 判断当前 CQI上报周期内 的 CQI与前一次上报的 CQI的差值是否小于预配置门限；
控制单元 430 ,用于当所述判断单元 420判断当前 CQI上报周期内的 CQI 与前一次上报的 CQI的差值小于预配置门限时， 控制所述上报单元停止向基 站发送所述当前上报周期内的 CQI。 参见图 5 , 为本发明 CQI上报终端的第二实施例框图：
该终端包括： 接收单元 510、读取单元 520、上报单元 530、判断单元 540 和控制单元 550。
其中， 接收单元 510, 用于接收基站发送的无线承载消息， 所述无线承 载消息中包含所述预设时间及所述预配置门限；
读取单元 520 , 用于从所述无线承载消息中读取所述预设时间及所述预 配置门限；
上报单元 530, 用于所述终端完成下行同步后， 在所述预设时间内按照
CQI上报周期向基站上报 CQI;
判断单元 540, 用于当超过所述预设时间时， 判断当前 CQI上报周期内 的 CQI与前一次上报的 CQI的差值是否小于预配置门限；
控制单元 550,用于当所述判断单元 540判断当前 CQI上报周期内的 CQI 与前一次上报的 CQI的差值小于预配置门限时， 控制所述上报单元停止向基 站发送所述当前上报周期内的 CQI。
参见图 6, 为本发明 CQI上报终端的第三实施例框图：
该终端包括：接收单元 610、读取单元 620、设置单元 630、开启单元 640、 上报单元 650、 判断单元 660和控制单元 670。
其中， 接收单元 610, 用于接收基站发送的无线承载消息， 所述无线承 载消息中包含预设时间； 读取单元 620, 用于从所述无线承载消息中读取所述预设时间； 设置单元 630, 用于根据所述读取的预设时间设置定时器；
开启单元 640, 用于当所述终端完成下行同步时， 开启所述定时器； 上报单元 650, 用于所述终端完成下行同步后， 在所述定时器超时前按 照 CQI上报周期向基站上报 CQI;
判断单元 660, 用于当定时器超时时， 判断当前 CQI上报周期内的 CQI 与前一次上报的 CQI的差值是否小于预配置门限；
控制单元 670, 用于当所述判断单元判断当前 CQI上报周期内的 CQI与 前一次上报的 CQI的差值小于预配置门限时， 控制所述上报单元停止向基站 发送所述当前上 ·^艮周期内的 CQI。 参见图 7, 为本发明基站的实施例框图：
该基站包括： 检测单元 710、 读取单元 720和调度单元 730。
检测单元 710, 用于按照传输时间间隔 ΤΉ检测所述终端上报的 CQI; 获取单元 720, 用于若检测到所述终端上报的 CQI, 从所述 CQI中获得 当前的信道质量指示信息， 若没有检测到所述终端上报的 CQI, 将所述终端 前一次上报 CQI时获得的信道质量指示信息作为当前信道质量指示信息。
进一步， 该基站还可以包括： 调度单元 730, 用于根据所述当前信道质 量指示信息进行用户数据调度。 通过对以上实施方式的描述可知，本发明实施例中终端完成下行同步后， 在预设时间内按照 CQI上报周期向基站上报 CQI, 当超过预设时间时， 判断 当前 CQI上报周期内的 CQI与前一次上报的 CQI的差值是否小于预配置门 限， 若小于， 则停止向基站发送当前上报周期内的 CQI。 本发明实施例中， 由于基站可以根据 CQI是否发生变化的情况灵活选择是否向基站上报 CQI, 而不是在每个 CQI上报周期均上报 CQI, 因此当终端的 CQI未发生明显变动 时， 通过减少 CQI上报次数， 可以降低终端的发射功率， 有效提升上行传输 容量， 减少上行传输干扰。
本领域的技术人员可以清楚地了解到本发明实施例中的技术可借助软件 加必需的通用硬件平台的方式来实现。 基于这样的理解， 本发明实施例中的 技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体 现出来， 该计算机软件产品可以存储在存储介质中， 如 ROM/RAM、 磁碟、 光盘等， 包括若干指令用以使得一台计算机设备（可以是个人计算机， 服务 器， 或者网络设备等）执行本发明各个实施例或者实施例的某些部分所述的 方法。
最后应说明的是： 以上实施例仅用以说明本发明的技术方案， 而非对其 限制； 尽管参照前述实施例对本发明进行了详细的说明， 本领域的普通技术 人员应当理解： 其依然可以对前述各实施例所记载的技术方案进行修改， 或 者对其中部分技术特征进行等同替换； 而这些修改或者替换， 并不使相应技 术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims

权利 要求
1、 一种信道质量指示 CQI上报方法， 其特征在于， 包括：
终端完成下行同步后，在预设时间内按照 CQI上报周期向基站上报 CQI; 和
当超过所述预设时间时，判断当前 CQI上报周期内的 CQI与前一次上报 的 CQI的差值是否小于预配置门限， 若小于， 则停止向基站发送所述当前上 报周期内的 CQI。
2、 根据权利要求 1所述的方法， 其特征在于， 还包括：
接收基站发送的无线承载消息， 所述无线承载消息中包含所述预设时间 及所述预配置门限；
从所述无线承载消息中读取所述预设时间及所述预配置门限。
3、 根据权利要求 2所述的方法， 其特征在于， 还包括：
根据所述预设时间设置定时器；
当所述终端完成下行同步时， 开启所述定时器。
4、 一种获取信道质量指示 CQI的方法， 其特征在于， 包括：
按照传输时间间隔 ΤΉ检测终端上报的 CQI;
若检测到所述终端上报的 CQI , 从所述 CQI中获得当前的信道质量指示 信息； 和
若没有检测到所述终端上报的 CQI, 将所述终端前一次上报 CQI时获得 的信道质量指示信息作为当前信道质量指示信息。
5、 根据权利要求 4所述的方法， 其特征在于， 还包括： 根据所述当前信 道质量指示信息进行用户数据调度。
6、 一种用于信道质量指示 CQI 上 4艮的系统， 其特征在于， 包括： 终端 和基站，
所述终端， 用于完成下行同步后， 在预设时间内按照 CQI上报周期向基 站上报 CQI, 当超过所述预设时间时， 判断当前 CQI上报周期内的 CQI与前 一次上报的 CQI的差值是否小于预配置门限， 若小于， 则停止向基站发送所 述当前上 ·^艮周期内的 CQI;
所述基站， 用于按照传输时间间隔 TTI检测终端上报的 CQI, 若检测到 所述终端上报的 CQI, 从所述 CQI中获得当前的信道质量指示信息， 若没有 检测到所述终端上报的 CQI, 将所述终端前一次上报 CQI时获得的信道质量 指示信息作为当前信道质量指示信息。
7、 根据权利要求 6所述的系统， 其特征在于，
所述终端， 还用于接收基站发送的无线承载消息， 并从所述无线承载消 息中读取所述预设时间及所述预配置门限， 根据所述读取的预设时间设置定 时器， 当终端完成下行同步时， 开启所述定时器。
8、 根据权利要求 6所述的系统， 其特征在于，
所述基站， 还用于根据所述当前信道质量指示信息进行用户数据调度。
9、 一种用于信道质量指示 CQI上报的终端， 其特征在于， 包括： 上报单元， 用于所述终端完成下行同步后， 在预设时间内按照 CQI上报 周期向基站上报 CQI;
判断单元，用于当超过所述预设时间时，判断当前 CQI上报周期内的 CQI 与前一次上报的 CQI的差值是否小于预配置门限； 和
控制单元，用于当所述判断单元判断当前 CQI上报周期内的 CQI与前一 次上报的 CQI的差值小于预配置门限时， 控制所述上报单元停止向基站发送 所述当前上 ·^艮周期内的 CQI。
10、 根据权利要求 9所述的终端， 其特征在于， 还包括：
接收单元， 用于接收基站发送的无线承载消息， 所述无线承载消息中包 含所述预设时间及所述预配置门限；
读取单元， 用于从所述无线承载消息中读取所述预设时间及所述预配置 门限。
11、 根据权利要求 10所述的终端， 其特征在于， 还包括： 设置单元， 用于根据所述读取的预设时间设置定时器；
开启单元， 用于当所述终端完成下行同步时， 开启所述定时器。
12、 一种基站， 其特征在于， 包括：
检测单元， 用于按照传输时间间隔 ΤΉ检测所述终端上 ^艮的 CQI; 和 获取单元， 用于若检测到所述终端上报的 CQI, 从所述 CQI中获得当前 的信道质量指示信息， 若没有检测到所述终端上报的 CQI, 将所述终端前一 次上报 CQI时获得的信道质量指示信息作为当前信道质量指示信息。
13、 根据权利要求 12所述的基站， 其特征在于， 还包括：
调度单元， 用于根据所述当前信道质量指示信息进行用户数据调度。
PCT/CN2011/079908 2011-01-26 2011-09-21 Cqi上报方法、获取cqi的方法、系统、终端及基站 Ceased WO2012100549A1 (zh)

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