WO2010094174A1 - 获取和发送信道质量反馈信息的方法、装置及通信系统 - Google Patents

获取和发送信道质量反馈信息的方法、装置及通信系统 Download PDF

Info

Publication number
WO2010094174A1
WO2010094174A1 PCT/CN2009/070465 CN2009070465W WO2010094174A1 WO 2010094174 A1 WO2010094174 A1 WO 2010094174A1 CN 2009070465 W CN2009070465 W CN 2009070465W WO 2010094174 A1 WO2010094174 A1 WO 2010094174A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel quality
user
channel
feedback
feedback information
Prior art date
Application number
PCT/CN2009/070465
Other languages
English (en)
French (fr)
Inventor
曾云宝
杜颖钢
Original Assignee
华为技术有限公司
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.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN200980147346.1A priority Critical patent/CN102239721B/zh
Priority to PCT/CN2009/070465 priority patent/WO2010094174A1/zh
Publication of WO2010094174A1 publication Critical patent/WO2010094174A1/zh

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/0001Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028Formatting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • H04L2001/0093Point-to-multipoint

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a communication system for acquiring and transmitting channel quality feedback information.
  • WiMAX Worldwide Interoperability for Microwave Access
  • MBS Multicast Broadcast Service
  • the MBS service is a point-to-multipoint service that provides a data source to transmit data to multiple users in a mobile network, which realizes network resource sharing and improves utilization of network resources.
  • the base station since the base station (BS) does not require the MBS user to feed back the channel quality index CQI (Channel Quality Index), the base station or the network cannot dynamically change the modulation code of the MBS service.
  • CQI Channel Quality Index
  • the feedback mechanism of two codewords or more codewords is often used in the prior art to feed back the channel quality of the MBS service. Taking the feedback mechanism of two codewords as an example, in this mode, the MBS user feeds the codeword one or the codeword two to the base station to indicate whether the order of the MCS is lowered or the order of the MCS is not modified.
  • the prior art technical solution does not consider the channel quality feedback of the MBS user in the case of good channel quality, and therefore, if the MBS user When the channel quality is good, the order of the MCS cannot be adjusted to be higher, so that the channel cannot be fully utilized, and the distribution of the MBS users cannot be accurately obtained by using the prior art.
  • Embodiments of the present invention provide a method and apparatus for acquiring channel quality information of a multicast broadcast service, so as to accurately know the distribution of MBS users.
  • a method for obtaining channel quality feedback information including: Obtaining channel feedback parameters;
  • the channel quality feedback information sent by the multicast broadcast service user in the user channel quality set is respectively received, and the distribution of the multicast broadcast service user is obtained.
  • an acquisition device including:
  • a parameter obtaining unit configured to acquire a channel feedback parameter
  • a user dividing unit configured to divide, according to the channel feedback parameter, a channel quality of a multicast broadcast service user into at least three user channel quality sets;
  • the channel quality feedback information acquiring unit is configured to respectively receive channel quality feedback information sent by the multicast broadcast service user in the user channel quality set, to obtain a distribution situation of the multicast broadcast service user.
  • the multicast broadcast service users belonging to different sets respectively send channel quality feedback information to the base station.
  • a transmitting apparatus including:
  • a parameter obtaining unit configured to acquire a channel feedback parameter
  • a user dividing unit configured to divide, according to the channel feedback parameter, a channel quality of a multicast broadcast service user into at least three user channel quality sets;
  • a channel quality feedback information acquiring unit configured to respectively receive channel quality feedback information sent by a multicast broadcast service user in the user channel quality set, to obtain a multicast broadcast service user's letter Road quality information.
  • the channel quality of the MBS user is divided into at least three user channel quality sets, and then the MBS users belonging to each set compare their CQIs with the channel quality set according to the comparison result. Determining the channel quality set to which it belongs and transmitting different channel quality feedback information, the distribution of the MBS users can be accurately determined according to the channel quality feedback information.
  • FIG. 1 is a flowchart of a method for obtaining channel quality feedback information according to an embodiment of the present invention
  • FIG. 2 is a specific flowchart of a method for obtaining channel quality feedback information according to an embodiment of the present invention
  • FIG. 3 is a second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a method for acquiring information according to Embodiment 5 of the present invention;
  • FIG. 1 is a flowchart of a method for obtaining channel quality feedback information according to an embodiment of the present invention
  • FIG. 2 is a specific flowchart of a method for obtaining channel quality feedback information according to an embodiment of the present invention
  • FIG. 3 is a second embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a method for acquiring information according to Embodiment 5 of the present invention;
  • FIG. 1 is a flowchart of a method for obtaining channel quality feedback information according to an embodiment of the present invention
  • FIG. 2 is a specific flowchart of
  • FIG. 5 is a structural diagram of an apparatus for acquiring an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a transmitting apparatus according to Embodiment 6 of the present invention.
  • Figure 7 is a structural diagram of a transmitting apparatus according to Embodiment 6 of the present invention.
  • FIG. 8 is a schematic diagram of a communication system according to Embodiment 7 of the present invention.
  • a method for obtaining channel quality feedback information includes the following steps:
  • Step 11 Obtain channel feedback parameters.
  • the channel feedback parameter may be obtained by the device that obtains the channel quality feedback information, and the device for obtaining the channel quality feedback information may be located in the base station or may be located in another device.
  • a base station will be described as an example.
  • Step 12 The base station divides the channel quality of the user into at least three user channel quality sets according to the channel feedback parameter.
  • the user is a multicast broadcast service user, and the multicast broadcast service user may also be referred to as a multicast service user or a multicast user.
  • a multicast broadcast service user is taken as an example for description.
  • the channel feedback parameter may include a feedback threshold ⁇ / And step size ⁇ .
  • the base station may first use the feedback threshold as a reference point, and the step size is a relative reference value, and each MBS user performs channel quality division.
  • the channel quality of the multicast broadcast service user is divided into the first set. And when the channel quality indicator value of the multicast broadcast service user is in a range of [CQI_Threshold, CQI_Threshold+Step), dividing the channel quality of the multicast broadcast service user into a second set, when When the channel quality indicator value of the multicast broadcast service user is within the range of [CQI_Threshold+Step, + ⁇ ), the channel quality of the multicast broadcast service user is divided into a third set.
  • the first set, the second set, and the third set form a relationship of a complete set.
  • Step 13 The base station separately receives channel quality feedback information sent by the multicast broadcast service user in the user channel quality set, and obtains a distribution of the multicast broadcast service user.
  • the channel quality feedback information received by the base station may include respective channel quality feedback information sent by the MBS users in all user channel quality sets.
  • the divided sets of user channel qualities form a complete set, when the base station receives (divided user channel quality set)
  • the number of combinations of -1) channel quality feedback information can be used to know the distribution of all MBS users. For example, taking the three user channel quality sets as an example, after the base station receives the channel quality feedback information sent by the MBS users of the two user channel quality sets, the base station can know the distribution of all the MBS users.
  • the method of the first embodiment of the present invention divides the channel quality of the MBS user into at least three user channel quality sets on the base station side, and then compares the CQIs of the MBS users to the channel quality sets by the MBS users belonging to each set, according to The comparison result determines the channel quality set to which it belongs, and sends different channel quality feedback information, so that the device that obtains the channel quality feedback information can accurately determine the distribution of the MBS user according to the channel quality feedback information.
  • the method according to the first embodiment of the present invention may further include:
  • Step 10 The base station sets the channel feedback parameter.
  • the base station may first set the channel feedback parameter according to the CQI of the MBS user in the service establishment phase. For example, the base station may set a channel quality indicator value of the worst channel quality or an average channel quality indicator value of each MBS user as a feedback threshold according to an initial channel quality indicator value of the multicast broadcast service user, and The step size is set, and the feedback threshold and the step size are broadcasted to each multicast broadcast service user. Or the base station implicitly indicates the feedback threshold and the step size by using a modulation coding mode MCS. In this case, the channel feedback parameter and the base station may also set the channel feedback parameter in other manners, and the setting manner is not limited by the embodiment of the present invention.
  • the second embodiment of the present invention provides a method for transmitting channel quality feedback information, including the following steps:
  • Step 21 Obtain a channel feedback parameter, and determine channel quality set partition information of the multicast broadcast service user according to the channel feedback parameter.
  • the information may be obtained by the device that obtains the channel quality feedback information, and the device that obtains the channel quality feedback information may be located in the MBS user terminal, and may also be located in other user terminals, and the following is the MBS user terminal. The example is described.
  • the channel feedback parameter may include a feedback threshold CQI_Threshold and a step size & ⁇ .
  • the MBS user terminal may obtain the channel feedback parameter by using at least the following two methods: receiving a channel feedback parameter that is broadcasted by the base station, or acquiring the channel feedback parameter according to the current MCS modulation and coding mode. Take the MCS modulation mode as an example. In this case, the order of the MCS of the MBS user is 1, and the feedback threshold is 2dB, step size is 4dB.
  • the user set split information may include a total number of divided user sets, and which MBS user belongs to which user set medium information.
  • Step 11 The MBS user terminal determines, according to the channel quality set partition information and the channel quality of each multicast broadcast service user, a set to which each multicast broadcast service user belongs.
  • each MBS user compares its own CQI with channel quality set partition information to determine whether it belongs to the first set or the second set or the third set.
  • Step 23 The multicast broadcast service users belonging to different sets respectively send channel quality feedback information to the base station.
  • the multicast broadcast service user in the first set sends the first channel quality feedback information to the base station
  • the multicast broadcast service user in the second set sends the first broadcast quality service to the base station.
  • the two channel quality feedback information, the multicast broadcast service user in the third set sends the third channel quality feedback information to the base station.
  • the first set, the second set, and the third set form a complete set, only the MBS users in the two sets send channel quality feedback information, so that the base station can obtain the distribution of all MBS users. Thereby further saving channel resources.
  • the first channel quality feedback information and the second channel quality feedback information may be sent through a dedicated shared control channel, for example, the channel quality feedback information may be carried by a codeword or sent by using a message. give away.
  • the first channel quality feedback information may be represented by 0, and the second channel is represented by 1 Quality feedback information; or 1 may be used to indicate first channel quality feedback information, and 0 may be used to indicate second channel quality feedback information.
  • the codeword 1 represents the first channel quality feedback information
  • the codeword 2 represents the second channel quality feedback information
  • the codeword 2 represents the first channel quality feedback information
  • the codeword 1 The second channel quality feedback information is represented, and the above codeword is sent through a shared feedback channel. In this manner, there is no conflicting situation between the transmission between the first channel quality feedback information and the second channel quality feedback information.
  • 01 can be used to indicate the first channel quality feedback information
  • 10 is the second channel quality feedback information
  • 11 is the third channel quality feedback information.
  • three channel quality feedback messages can be distinguished by other means.
  • the method for transmitting channel quality feedback information in the second embodiment of the present invention is that MBS users belonging to different user channel quality sets send different channel quality feedback information to devices that obtain channel quality feedback information, so the channel quality feedback information can be accurately reflected.
  • the technical solution of the example enables the base station to adjust the order of the MCS according to the channel condition in real time, thereby more fully utilizing the channel and saving overhead.
  • the channel quality of the MBS user is divided into three user channel quality sets as an example for description.
  • the base station sends the channel feedback parameter to the MBS user by means of broadcast.
  • Step 31 The base station sets the CQ I of the worst channel quality to be based on the initial CQI of each MBS user. Feedback threshold And transmitting the feedback threshold and the step size to each MBS user in a broadcast manner.
  • Step 32 According to the manner described in Embodiment 1, the base station divides the channel quality of each MBS user into three user channel quality sets according to the feedback threshold and the step size.
  • Step 33 Each MBS user determines a user set to which the CQ I belongs according to the relationship between the CQ I and the user channel quality set, and sends channel quality feedback information to the base station respectively.
  • the MBS user in the first set sends the first channel quality feedback information to the base station, which is represented by codeword one; the multicast broadcast service user in the second set sends the second channel quality feedback information to the base station, which is represented by codeword two
  • the MBS users in the third set do not feed back any information.
  • Step 34 The base station receives the channel quality feedback information sent by the MBS user. If the codeword is one, the NACK indicates that the channel quality of the MBS user is poor, or the codeword one and the codeword two are received at the same time. The order of the MCS; if only the codeword is two, it indicates that the channel quality of the MBS user satisfies the requirement. If the base station does not receive any information within a certain period of time, it indicates that the current channel quality of the MBS user can use a higher order MCS.
  • the MBS user obtains channel feedback parameters in an indirect manner.
  • the method includes the following steps: Step 41: The MBS user obtains channel feedback parameters according to the current MCS modulation mode.
  • the MCS modulation is 1 QPSK 2/3.
  • the order of the MCS of the MBS user is 1, and the feedback threshold is It is 2dB and the step size is 4dB.
  • the base station divides the channel quality of each MBS user into three user channel quality sets according to the feedback threshold and the step size.
  • Step 43 Each MBS user determines a user set to which the CQI belongs according to the relationship between the CQI and the user channel quality set, and sends channel quality feedback information to the base station respectively.
  • the MBS user in the first set sends the first channel quality feedback information to the base station, which is represented by codeword one; the multicast broadcast service user in the second set sends the second channel quality feedback information to the base station, which is represented by codeword two
  • the MBS users in the third set do not feed back any information.
  • Step 44 The base station receives the channel quality feedback information sent by the MBS user. If the codeword is one, the NACK indicates that the channel quality of the MBS user is poor, or the codeword one and the codeword two are received at the same time. The order of the MCS; if only the codeword is two, it indicates that the channel quality of the MBS user satisfies the requirement. If the base station does not receive any information within a certain period of time, it indicates that the current channel quality of the MBS user can use a higher order MCS.
  • the first channel quality feedback information fed back by the MBS user in the first set is represented by 0, and the second channel quality feedback information fed back by the MBS user in the second set is represented by 1. If the base station demodulates that both 0 and 1 have or only 0, it means that the order of the MCS needs to be lowered; if the demodulation is only 1 , the MCS order is unchanged; if the demodulation is 1 or 0, This means that a higher order MCS can be used.
  • the base station in the embodiment of the present invention can accurately know the distribution of MBS users according to the channel quality feedback information sent by the MBS user. Moreover, with the technical solution of the embodiment of the present invention, the quality of the MBS user with the worst channel quality can be ensured, and the order of the MCS can be adjusted according to the channel condition in real time, thereby making full use of the channel.
  • the storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or a Random Acces s Memory (RAM).
  • the fifth embodiment of the present invention provides an obtaining apparatus, configured to acquire channel quality feedback information, where the apparatus includes:
  • a parameter obtaining unit 51 configured to acquire a channel feedback parameter
  • a user dividing unit 52 configured to divide, according to the channel feedback parameter, a channel quality of a multicast broadcast service user into at least three user channel quality sets;
  • the channel quality feedback information acquiring unit 53 is configured to respectively receive channel quality feedback information sent by the multicast broadcast service user in the user channel quality set, to obtain a distribution of the multicast broadcast service user.
  • the user dividing unit 52 may include: a comparing module 521, configured to compare a channel quality indicator value of the multicast broadcast service user with a channel feedback parameter; and a user dividing module 522, configured to: When the channel quality indicator value of the multicast broadcast service user is smaller than the feedback threshold, dividing the channel quality of the multicast broadcast service user into a first set; when the channel quality of the multicast broadcast service user When the indication value is in the range of [Cg/ _ Threshold, CQI _ Threshold + Step), the channel quality of the multicast broadcast service user is divided into a second set; when the channel quality indicator value of the multicast broadcast service user is located When the range of [C /_73 ⁇ 4r£w1 ⁇ 2/t + Step, + ⁇ ), the channel quality of the multicast broadcast service user is divided into a third set; wherein, the CQI_ Threshold represents a feedback threshold, >3 ⁇ 4 Indicates the step size.
  • a setting unit 54 may be further included for setting the channel feedback parameters.
  • the channel feedback parameter may include a feedback threshold and a step size.
  • the base station may use the channel quality indicator value of the worst channel quality or the MBS user according to the initial channel quality indicator value of the multicast broadcast service user.
  • the average channel quality indicator value is set to a feedback threshold value, and the step size is set, and the feedback threshold value and the step size are broadcasted to each multicast broadcast service user.
  • the base station implicitly represents the feedback threshold by using a modulation and coding mode MCS, and sets a step size.
  • the base station may further include a sending unit 55, configured to send, by using a broadcast manner, the broadcast broadcast service user to the multicast broadcast service user. Channel feedback parameters.
  • the device shown in Fig. 4 or Fig. 5 may be located in a base station or may be located in another device.
  • the acquiring apparatus provided by the embodiment of the present invention divides the channel quality of the MBS user into at least three user channel quality sets, and then performs the CQI and the channel quality set by the MBS users belonging to each set. Comparing, determining a channel quality set to which the channel quality is assigned according to the comparison result, and transmitting different channel quality feedback information, so that the acquiring device can accurately determine the distribution of the MBS user according to the channel quality feedback information.
  • the sixth embodiment of the present invention provides a transmitting apparatus, configured to send channel quality feedback information, where the apparatus includes:
  • the information acquiring unit 01 is configured to acquire channel feedback parameters, and determine channel quality set partition information of the multicast broadcast service user according to the channel feedback parameter;
  • a set attribution determining unit 62 configured to determine, according to the channel quality set partition information and channel quality of each multicast broadcast service user, a set to which each multicast broadcast service user belongs;
  • the channel quality feedback information sending unit 63 is configured to send channel quality feedback information of the multicast broadcast service users belonging to different sets to the base station.
  • the channel feedback parameter includes a feedback threshold value and a step size
  • the channel quality set split information of the multicast broadcast service user includes dividing a channel quality of the multicast broadcast service user into at least three user channel quality sets.
  • the set attribution determining unit 62 may include: a comparing module 621, configured to compare channel quality indicator values of different multicast broadcast service users with user channel quality sets.
  • the information sending module 622 is configured to send the comparison result to the channel quality feedback information sending unit 63, so that the channel quality feedback information sending unit 63 will classify the channel quality feedback of the multicast broadcast service users belonging to different sets.
  • the information is sent to the base station.
  • the multicast broadcast service user in the first set sends the first channel quality feedback information to the base station
  • the multicast broadcast service user in the second set sends the second channel quality feedback information to the base station
  • the multicast broadcast service user in the third set sends the third channel quality feedback information to the base station.
  • the base station can obtain the distribution of all MBS users. Thereby further saving channel resources.
  • the device according to Embodiment 6 of the present invention may be located in a multicast broadcast service user terminal.
  • the sending apparatus provided in Embodiment 6 of the present invention sends different channel quality feedback information to the acquiring apparatus by the MBS users belonging to different user channel quality sets, so the channel quality feedback information can accurately reflect the MBS users. Distribution.
  • Embodiment 7 of the present invention further provides a communication system.
  • the base station 71 includes: the base station includes the acquiring device shown in FIG. 4 or FIG. 5; and the multicast broadcast service user terminal 72 includes the transmitting device shown in FIG. 6 or FIG. 7.
  • Embodiment 7 of the present invention can improve the accuracy of the distribution of MBS users fed back by the user terminal of the multicast broadcast service.

Landscapes

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

Description

获取和发送信道质量反馈信息的方法、 装置及通信系统 技术领域
本发明涉及通信技术领域, 尤其涉及一种获取和发送信道质量反馈信息 的方法、 装置及通信系统。
背景技术
为了有效的利用移动网络资源, WiMAX( Worldwide Interoperability for Microwave Access, 微波接入全球互通)定义了 MBS ( Multi-cast Broadcast Service,多播广播业务)业务。 所述 MBS 业务是在移动网络中提供一个数据 源向多个用户发送数据的点到多点业务, 它实现了网络资源共享, 提高了网 络资源的利用率。
但是对于 MBS 业务来讲, 由于基站(Base Station, BS )并不要求 MBS 用户反馈信道质量 CQI (Channel Quality Index, 信道质量指示), 因此, 基 站或者网络不能够动态的改变 MBS 业务的调制编码。 为解决这个问题, 现有 技术中常利用两个码字或者更多码字的反馈机制来反馈 MBS业务的信道质量。 以两个码字的反馈机制为例, 在这种方式下, MBS用户向基站反馈码字一或者 码字二以表示是降低 MCS的阶次还是不修改 MCS的阶次。
在实现本发明的过程中, 发明人发现现有技术中至少存在如下问题: 现有技术的技术方案并没有考虑到 MBS 用户在信道质量好的情况下的信 道质量反馈, 因此, 若 MBS用户的信道质量都很好的时候, 不能将 MCS的阶 次调整到更高, 从而不能充分利用信道, 也就导致利用现有技术不能准确的 获知 MBS用户的分布情况。
发明内容
本发明实施例提供一种获取多播广播业务信道质量信息的方法、 装置, 以准确的获知 MBS用户的分布情况。
根据本发明的一方面, 提供一种获取信道质量反馈信息的方法, 包括: 获取信道反馈参数;
根据所述信道反馈参数, 将多播广播业务用户的信道质量划分成至少三 个用户信道质量集合;
分别接收由所述用户信道质量集合中的多播广播业务用户发送的信道质 量反馈信息, 获取多播广播业务用户的分布情况。
根据本发明的另一方面, 还提供一种获取装置, 包括:
参数获取单元, 用于获取信道反馈参数;
用户划分单元, 用于根据所述信道反馈参数, 将多播广播业务用户的信 道质量划分成至少三个用户信道质量集合;
信道质量反馈信息获取单元 , 用于分别接收由所述用户信道质量集合中 的多播广播业务用户发送的信道质量反馈信息, 获取多播广播业务用户的分 布情况。
根据本发明的另一方面, 还提供一种发送信道质量反馈信息的方法、 装 置, 以准确的发送 MBS用户的分布情况。
获取信道反馈参数, 并根据所述信道反馈参数确定多播广播业务用户的 信道质量集合划分信息;
根据所述信道质量集合划分信息以及各多播广播业务用户的信道质量, 确定各多播广播业务用户所属的集合;
分属于不同集合的多播广播业务用户分别向基站发送信道质量反馈信 息。
根据本发明的另一方面, 还提供一种发送装置, 包括:
参数获取单元, 用于获取信道反馈参数;
用户划分单元, 用于根据所述信道反馈参数, 将多播广播业务用户的信 道质量划分成至少三个用户信道质量集合;
信道质量反馈信息获取单元 , 用于分别接收由所述用户信道质量集合中 的多播广播业务用户发送的信道质量反馈信息, 获取多播广播业务用户的信 道质量信息。
通过本发明实施例提供的技术方案, 将 MBS 用户的信道质量划分成至少 三个用户信道质量集合, 然后由分属于每个集合的 MBS用户将自身的 CQI与 信道质量集合进行比较, 根据比较结果确定其所属信道质量集合, 并发送不 同的信道质量反馈信息, 可以准确的根据所述信道质量反馈信息确定 MBS 用 户的分布情况。
附图说明
为了更清楚地说明本发明实施例的技术方案, 下面将对实施例描述中所 需要使用的附图作一简单地介绍, 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为本发明实施例一获取信道质量反馈信息的方法的流程图; 图 2为本发明实施例一获取信道质量反馈信息的方法的具体流程图; 图 3为本发明实施例二发送信道质量反馈信息的方法的流程图; 图 4为本发明实施例五获取装置的示意图;
图 5为本发明实施例五获取装置的结构图;
图 6为本发明实施例六的发送装置的示意图;
图 7本发明实施例六的发送装置的结构图;
图 8为本发明实施例七通信系统的示意图。
具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而 不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作 出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
实施例一
为准确的获知 MBS用户的分布情况即 MBS用户的信道质量信息, 如图 1 所示, 本发明实施例一提供了一种获取信道质量反馈信息的方法, 包括如下 步骤:
步骤 11、 获取信道反馈参数。
在本发明实施例一中, 可由获取信道质量反馈信息的装置来获取信道反 馈参数, 并且所述获取信道质量反馈信息的装置可以位于基站中, 也可以位 于其他设备中。 在以下, 将以基站为例进行描述。
步骤 12、 所述基站根据所述信道反馈参数, 将用户的信道质量划分成至 少三个用户信道质量集合。 其中, 用户为多播广播业务用户, 并多播广播业 务用户也可以称为多播业务用户或多播用户, 在本实施例中, 以多播广播业 务用户作为例子进行说明。
其中, 所述信道反馈参数可以包括反馈门限值 ρ/
Figure imgf000006_0001
和步长 Φ。 所述基站可首先以所述反馈门限值为参考点, 步长为相对参考值, 将各 MBS 用户进行信道质量划分。
以划分为三个用户信道质量集合为例, 当所述多播广播业务用户的信道 质量指示值小于所述反馈门限值时, 将所述多播广播业务用户的信道质量划 分到第一集合, 当所述多播广播业务用户的信道质量指示值位于 [CQI _ Threshold, CQI _ Threshold + Step)范围内时, 将所述多播广播业务用户的信 道质量划分到第二集合, 当所述多播广播业务用户的信道质量指示值位于 [CQI _ Threshold + Step,+∞)范围内时, 将所述多播广播业务用户的信道质量划分 到第三集合。 其中, 所述第一集合、 第二集合、 第三集合构成一个全集的关 系。
步骤 13、 所述基站分别接收由所述用户信道质量集合中的多播广播业务 用户发送的信道质量反馈信息, 获取多播广播业务用户的分布情况。
在基站接收到的信道质量反馈信息中, 可包括全部用户信道质量集合中 的 MBS 用户发送的各自的信道质量反馈信息。 此外, 由于划分的各用户信道 质量集合之间构成一个全集, 因此, 当基站接收到 (划分的用户信道质量集 合的个数 -1 )个信道质量反馈信息, 就可获知全部 MBS 用户的分布情况。 例 如, 以划分三个用户信道质量集合为例, 当基站接收到两个用户信道质量集 合的 MBS用户发送的信道质量反馈信息后, 基站就可获知全部 MBS用户的分 布情况。
本发明实施例一的方法, 通过在基站侧将 MBS 用户的信道质量划分成至 少三个用户信道质量集合, 然后由分属于每个集合的 MBS 用户将自身的 CQI 与信道质量集合进行比较, 根据比较结果确定其所属信道质量集合, 并发送 不同的信道质量反馈信息, 以使得获取信道质量反馈信息的装置能够准确的 根据所述信道质量反馈信息确定 MBS用户的分布情况。
此外, 如图 2所示, 在步骤 11前, 为进一步提高获取的 MBS用户的分布 情况的准确性, 本发明实施例一所述的方法还可包括:
步骤 10、 所述基站设置所述信道反馈参数。
在此步骤中, 所述基站可以在业务建立阶段首先根据 MBS用户的 CQI设 定所述信道反馈参数。 例如, 所述基站可根据所述多播广播业务用户的初始 信道质量指示值, 将最差信道质量的信道质量指示值或者将各 MBS 用户的平 均信道质量指示值设置为反馈门限值, 并设置步长, 并将所述反馈门限值和 步长以广播的方式发送给各多播广播业务用户。 或者所述基站通过调制编码 方式 MCS 隐含表示所述反馈门限值和步长。 在这种情况下, 信道反馈参数并 当然, 所述基站还可通过其他的方式设置所述信道反馈参数, 其设置方 式并不受本发明实施例的限制。
实施例二
如图 3所示, 本发明实施例二提供了一种发送信道质量反馈信息的方法, 包括如下步骤:
步骤 21、 获取信道反馈参数, 并根据所述信道反馈参数确定多播广播业 务用户的信道质量集合划分信息。 在此实施例中, 可由获取信道质量反馈信息的装置获取各信息, 并且所 述获取信道质量反馈信息的装置可位于 MBS用户终端中, 当然还可以位于其 他用户终端中, 以下以 MBS用户终端为例进行描述。
与实施例一中描述的相同, 所述信道反馈参数可以包括反馈门限值 CQI— Threshold和步长 &φ。所述 MBS用户终端可通过至少以下两种方式获取信 道反馈参数: 接收由基站广播发送的信道反馈参数, 或者根据目前的 MCS调 制编码方式, 获取所述信道反馈参数。 以 MCS调制方式为 1为例, 在这种情 况下, MBS用户的 MCS的阶次为 1 , 反馈门限值
Figure imgf000008_0001
2dB, 步 长为 4dB。 所述用户集合划分信息可以包括所划分的用户集合的总数, 某个 MBS用户是隶属于哪个用户集合中等信息。
步骤 11、 所述 MBS用户终端根据所述信道质量集合划分信息以及各多播 广播业务用户的信道质量, 确定各多播广播业务用户所属的集合。
与实施例一中描述的划分为三个集合相对应, 各 MBS 用户将自身的 CQI 与信道质量集合划分信息进行比较, 确定它是分属于第一集合或第二集合或 第三集合。
步骤 23、 分属于不同集合的多播广播业务用户分别向基站发送信道质量 反馈信息。
在此步骤中, 以划分为三个集合为例, 第一集合中的多播广播业务用户 向基站发送第一信道质量反馈信息, 第二集合中的多播广播业务用户向所述 基站发送第二信道质量反馈信息, 第三集合中的多播广播业务用户向所述基 站发送第三信道质量反馈信息。
在具体应用过程中, 由于第一集合、 第二集合和第三集合构成一个全集, 所以可只有其中两个集合中的 MBS用户发送信道质量反馈信息就能够使得基 站获得全部 MBS 用户的分布情况, 从而进一步节约信道资源。 并且, 所述第 一信道质量反馈信息和第二信道质量反馈信息可通过专门的共享控制信道发 送, 例如可以通过码字承载所述信道质量反馈信息或者以消息的方式进行发 送。
以第一集合和第二集合中的 MBS 用户发送信道质量反馈消息为例, 当通 过专门的消息方式发送所述信道质量反馈信息时, 可用 0表示第一信道质量 反馈信息, 1表示第二信道质量反馈信息; 或者可用 1表示第一信道质量反馈 信息, 0表示第二信道质量反馈信息。 而以码字来承载信道质量反馈信息时, 可用码字一表示第一信道质量反馈信息, 码字二表示第二信道质量反馈信息, 或者码字二表示第一信道质量反馈信息, 码字一表示第二信道质量反馈信息, 并将上述码字通过共享反馈信道发送。 在这种方式下, 第一信道质量反馈信 息和第二信道质量反馈信息之间的发送不存在相互冲突的情况。
而当三个集合中的 MBS用户均发送信道质量反馈消息时, 可用 01表示第 一信道质量反馈信息, 10表示第二信道质量反馈信息, 11表示第三信道质量 反馈信息。 当然, 还可通过其他方式区分三种信道质量反馈消息。
本发明实施例二发送信道质量反馈信息的方法, 是由分属于不同用户信 道质量集合的 MBS 用户向获取信道质量反馈信息的装置发送不同信道质量反 馈信息, 因此该信道质量反馈信息能够准确的反映 MBS 用户的分布情况。 并 且, 正是通过分属于不同用户信道质量集合的 MBS用户向获取信道质量反馈 信息的装置发送不同信道质量反馈信息, 因此在保证最差信道质量的 MBS 用 户的服务质量的同时, 利用本发明实施例的技术方案, 能够使得基站实时地 根据信道状况调整 MCS的阶次, 从而更充分的利用了信道, 节省了开销。
下面结合实施例三和实施例四详细描述一下本发明实施例的技术方案。 以下实施例中, 以将 MBS用户的信道质量划分成三个用户信道质量集合为例 进行描述。
实施例三
在实施例三中, 基站通过广播的方式将信道反馈参数发送给 MBS 用户。 包括:
步骤 31、 基站根据各 MBS用户的初始 CQI ,将最差信道质量的 CQ I设置为 反馈门限值
Figure imgf000010_0001
, 并将所述反馈门限值和步长 以广播的方式发送给各 MBS用户。
步骤 32、 按照实施例一中所描述的方式, 所述基站根据反馈门限值和步 长将各 MBS用户的信道质量划分成三个用户信道质量集合。
步骤 33、 各 MBS用户根据其 CQ I与用户信道质量集合划分的关系, 确定 其所属的用户集合, 并分别向基站发送信道质量反馈信息。
第一集合中的 MBS用户向基站发送第一信道质量反馈信息, 用码字一表 示; 第二集合中的多播广播业务用户向所述基站发送第二信道质量反馈信 息, 用码字二表示; 第三集合中的 MBS用户不反馈任何信息。
步骤 34、 所述基站接收由 MBS用户发送的信道质量反馈信息, 若为码字 一,则表示 NACK且该 MBS用户的信道质量差,或者同时收到码字一和码字二, 则需要降低 MCS的阶次; 若只有码字二, 则表示该 MBS用户的信道质量满足 要求。 若基站在一定时间内没有接收到任何信息, 则表示 MBS 用户的当前信 道质量可以釆用更高阶次的 MCS。
实施例四
在实施例四中, MBS用户通过间接的方式获取信道反馈参数。 包括: 步骤 41、 MBS用户根据目前的 MCS调制方式获取信道反馈参数。
结合表 1 , 以 MCS调制方式为 1 QPSK 2/ 3为例, 在这种情况下, MBS用 户的 MCS的阶次为 1 , 反馈门限值
Figure imgf000010_0002
为 2dB, 步长为 4dB。
表 1
Figure imgf000010_0003
3/16QAM 3/4 10
4/64QAM 3/4 14 步骤 42、 按照实施例一中所描述的方式, 所述基站根据反馈门限值和步 长将各 MBS用户的信道质量划分成三个用户信道质量集合。
步骤 43、 各 MBS用户根据其 CQI与用户信道质量集合划分的关系, 确定 其所属的用户集合, 并分别向基站发送信道质量反馈信息。
第一集合中的 MBS用户向基站发送第一信道质量反馈信息, 用码字一表 示; 第二集合中的多播广播业务用户向所述基站发送第二信道质量反馈信息, 用码字二表示; 第三集合中的 MBS用户不反馈任何信息。
步骤 44、 所述基站接收由 MBS用户发送的信道质量反馈信息, 若为码字 一,则表示 NACK且该 MBS用户的信道质量差,或者同时收到码字一和码字二, 则需要降低 MCS的阶次; 若只有码字二, 则表示该 MBS用户的信道质量满足 要求。 若基站在一定时间内没有接收到任何信息, 则表示 MBS 用户的当前信 道质量可以釆用更高阶次的 MCS。
或者当 MBS通过消息方式反馈信道质量信息时, 第一集合中的 MBS用户 反馈的第一信道质量反馈信息用 0表示, 第二集合中的 MBS用户反馈的第二 信道质量反馈信息用 1表示。 若基站解调得出 0和 1都有或者只有 0 , 则表示 需要降低 MCS的阶次; 若解调得出只有 1 , 则 MCS阶次不变; 若解调得出 1或 0都没有, 则表示可以釆用更高阶次的 MCS。
由以上实施例可以看出, 本发明实施例中基站能够根据 MBS用户发送的 信道质量反馈信息, 准确的获知 MBS 用户的分布情况。 并且, 利用本发明实 施例的技术方案, 在保证最差信道质量的 MBS用户的服务质量的同时, 能够 实时地根据信道状况调整 MCS的阶次, 从而更充分的利用了信道。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流 程, 是可以通过计算机程序来指令相关的硬件来完成, 所述的程序可存储于 一计算机可读取存储介质中, 该程序在执行时, 可包括如上述各方法的实施 例的流程。其中,所述的存储介质可为磁碟、光盘、只读存储记忆体( Read-Only Memory, ROM )或随机存储记忆体 ( Random Acces s Memory, RAM )等。
实施例五
如图 4 所示, 本发明实施例五提供一种获取装置, 用于获取信道质量反 馈信息, 该装置包括:
参数获取单元 51 , 用于获取信道反馈参数;
用户划分单元 52 , 用于根据所述信道反馈参数, 将多播广播业务用户的 信道质量划分成至少三个用户信道质量集合;
信道质量反馈信息获取单元 53 , 用于分别接收由所述用户信道质量集合 中的多播广播业务用户发送的信道质量反馈信息, 获取多播广播业务用户的 分布情况。
其中, 如图 5所示, 所述用户划分单元 52可包括: 比较模块 521 , 用于 将所述多播广播业务用户的信道质量指示值与信道反馈参数进行比较; 用户 划分模块 522 ,用于当所述多播广播业务用户的信道质量指示值小于所述反馈 门限值时, 将所述多播广播业务用户的信道质量划分到第一集合; 当所述多 播广播业务用户的信道质量指示值位于 [Cg/ _ Threshold, CQI _ Threshold + Step)范 围内时, 将所述多播广播业务用户的信道质量划分到第二集合; 当所述多播 广播业务用户的信道质量指示值位于 [C /_7¾r£w½/t + Step,+∞)范围内时, 将所 述多播广播业务用户的信道质量划分到第三集合;其中,所逸 CQI— Threshold表 示反馈门限值, >¾ 表示步长。
此外, 为进一步提高获取的 MBS用户的分布情况的准确性, 如图 5所示, 还可包括设置单元 54 , 用于设置所述信道反馈参数。 其中, 所述信道反馈参 数可包括反馈门限值和步长。
与实施例一中描述的相同, 所述基站可根据所述多播广播业务用户的初 始信道质量指示值, 将最差信道质量的信道质量指示值或者将各 MBS用户的 平均信道质量指示值设置为反馈门限值, 并设置步长, 并将所述反馈门限值 和步长以广播的方式发送给各多播广播业务用户。 或者所述基站通过调制编 码方式 MCS 隐含表示所述反馈门限值, 并设置步长。 当所述基站根据所述多 播广播业务用户的初始信道质量指示值时, 如图 5 所示, 还可包括发送单元 55 , 用于通过广播的方式向所述多播广播业务用户发送所述信道反馈参数。
在具体应用中, 图 4或图 5所示的装置可位于基站中, 还可以位于其他 设备中。
由以上可以看出, 本发明实施例提供的获取装置, 将 MBS 用户的信道质 量划分成至少三个用户信道质量集合, 然后由分属于每个集合的 MBS用户将 自身的 CQI 与信道质量集合进行比较, 根据比较结果确定其所属信道质量集 合, 并发送不同的信道质量反馈信息, 以使得获取装置能够准确的根据所述 信道质量反馈信息确定 MBS用户的分布情况。
实施例六
如图 6 所示, 本发明实施例六提供一种发送装置, 用于发送信道质量反 馈信息, 该装置包括:
信息获取单元 01 , 用于获取信道反馈参数, 并根据所述信道反馈参数确 定多播广播业务用户的信道质量集合划分信息;
集合归属确定单元 62 , 用于根据所述信道质量集合划分信息以及各多播 广播业务用户的信道质量, 确定各多播广播业务用户所属的集合;
信道质量反馈信息发送单元 63 , 用于将分属于不同集合的多播广播业务 用户的信道质量反馈信息发送给基站。
其中, 所述信道反馈参数包括反馈门限值和步长, 所述多播广播业务用 户的信道质量集合划分信息包括将所述多播广播业务用户的信道质量划分成 至少三个用户信道质量集合。
其中, 如图 7所示, 所述集合归属确定单元 62可包括: 比较模块 621 , 用于将不同多播广播业务用户的信道质量指示值同用户信道质量集合进行比 较; 信息发送模块 622 , 用于将比较结果发送给所述信道质量反馈信息发送单 元 63 ,以使所述信道质量反馈信息发送单元 63将分属于不同集合的多播广播 业务用户的信道质量反馈信息发送给基站。
以划分为三个集合为例, 第一集合中的多播广播业务用户向基站发送第 一信道质量反馈信息, 第二集合中的多播广播业务用户向所述基站发送第二 信道质量反馈信息, 第三集合中的多播广播业务用户向所述基站发送第三信 道质量反馈信息。
在具体应用过程中, 由于第一集合、 第二集合和第三集合构成一个全集, 所以可只有其中两个集合中的 MBS用户发送信道质量反馈信息就能够使得基 站获得全部 MBS用户的分布情况, 从而进一步节约信道资源。
本发明实施例六所述的装置可位于多播广播业务用户终端中。
由以上可以看出, 本发明实施例六提供的发送装置, 是由分属于不同用 户信道质量集合的 MBS用户向获取装置发送不同信道质量反馈信息, 因此该 信道质量反馈信息能够准确的反映 MBS用户的分布情况。
实施例七
如图 8所示, 本发明实施例七还提供了一种通信系统。 包括: 基站 71 , 所述基站包括图 4或图 5所示的获取装置; 多播广播业务用户终端 72 , 包括 图 6或图 7所示的发送装置。
由以上可以看出, 本发明实施例七所述的通信系统, 能够提高多播广播 业务用户终端反馈的 MBS用户分布情况的准确性。
以上所述, 仅为本发明的具体实施方式, 但本发明的保护范围并不局限 于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应所述以权利要求的保护范围为准。

Claims

权利 要 求 书
1、 一种获取信道质量反馈信息的方法, 其特征在于, 包括:
获取信道反馈参数;
根据所述信道反馈参数, 将用户的信道质量划分成至少三个用户信道质量 分别接收由所述用户信道质量集合中的用户发送的信道质量反馈信息, 获 取用户的分布情况。
2、 根据权利要求 1所述的获取信道质量反馈信息的方法, 其特征在于, 在 所述获取信道反馈参数之前, 所述方法还包括:
根据用户的信道质量设置所述信道反馈参数。
3、根据权利要求 1或 2所述的获取信道质量反馈信息的方法,其特征在于, 所述信道反馈参数包括反馈门限值和步长。
4、 根据权利要求 2所述的获取信道质量反馈信息的方法, 其特征在于, 所 述设置所述信道反馈参数包括:
根据所述用户的初始信道质量指示值确定所述反馈门限值, 并设置步长; 或者
通过调制编码方式隐含表示所述反馈门限值和步长。
5、 根据权利要求 4所述的获取信道质量反馈信息的方法, 其特征在于, 所 述信道反馈参数通过广播的方式发送给用户或由所述用户自身根据所述调制编 码方式确定所述信道反馈参数。
6、 根据权利要求 3所述的获取信道质量反馈信息的方法, 其特征在于, 所 述根据所述信道反馈参数, 将用户的信道质量划分成至少三个用户信道质量集 合包括:
以所述反馈门限值为参考点, 步长为相对参考值, 当所述用户的信道质量 指示值小于所述反馈门限值时, 将所述用户的信道质量划分到第一集合;
当所述用户的信道质量指示值位于 [Cg/ _ Threshold, CQI _ Threshold + Step)范围 内时, 将所述用户的信道质量划分到第二集合;
当所述用户的信道质量指示值位于 [C / _ 7¾r£w½/t + Step,+∞)范围内时, 将所 述用户的信道质量划分到第三集合;
其中, 所述 Cg/ _ 7¾r£w/?o/t表示反馈门限值, >¾φ表示步长。
7、 一种发送信道质量反馈信息的方法, 其特征在于, 包括:
获取信道反馈参数, 并根据所述信道反馈参数确定用户的信道质量集合划 分信息;
根据所述信道质量集合划分信息以及各用户的信道质量, 确定各用户所属 的集合;
分属于不同集合的用户分别向基站发送信道质量反馈信息。
8、 根据权利要求 7所述的发送信道质量反馈信息的方法, 其特征在于, 所 述获取信道反馈参数包括:
接收由基站广播发送的信道反馈参数; 或者
根据调制编码方式, 各用户自身获取所述信道反馈参数。
9、根据权利要求 7或 8所述的发送信道质量反馈信息的方法,其特征在于, 所述信道反馈参数包括反馈门限值和步长。
1 0、 根据权利要求 9 所述的发送信道质量反馈信息的方法, 其特征在于, 所述用户的信道质量集合划分信息包括将所述用户的信道质量划分成至少三个 用户信道质量集合;
所述分属于不同集合的用户分别向基站发送信道质量反馈信息包括: 由至少两个集合中的用户分别向基站发送各自的信道质量反馈信息。
1 1、 根据权利要求 1 0所述的发送信道质量反馈信息的方法, 其特征在于, 所述分属于不同集合的多用户分别向基站发送信道质量反馈信息的方式包括: 通过共享控制信道发送所述信道质量反馈信息。
1 2、 一种获取装置, 其特征在于, 包括:
参数获取单元, 用于获取信道反馈参数; 用户划分单元, 用于根据所述信道反馈参数, 将用户的信道质量划分成至 少三个用户信道质量集合;
信道质量反馈信息获取单元 , 用于分别接收由所述用户信道质量集合中的 用户发送的信道质量反馈信息, 获取用户的分布情况。
1 3、 根据权利要求 12所述的获取装置, 其特征在于, 还包括:
设置单元, 用于设置所述信道反馈参数;
发送单元, 用于通过广播的方式向所述用户发送所述信道反馈参数。
14、 根据权利要求 12或 1 3所述的获取装置, 其特征在于, 所述信道反馈 参数包括反馈门限值和步长。
15、 根据权利要求 14所述的获取装置, 其特征在于, 所述用户划分单元包 括:
比较模块, 用于将所述用户的信道质量指示值与信道反馈参数进行比较; 用户划分模块, 用于当所述用户的信道质量指示值小于所述反馈门限值时, 将所述用户的信道质量划分到第一集合; 当所述用户的信道质量指示值位于 [CQI _ Threshold, CQI _ Threshold + Step)范围内时, 将所述用户的信道质量划分到第 二集合; 当所述用户的信道质量指示值位于 [Cg/_ 7¾r£w/w/t + 1¾£^,+∞)范围内时, 将所述用户划分的信道质量到第三集合; 其中, 所述 ρ/_ 7¾Γ£^。/ί表示反馈门 限值, >¾ 表示步长。
16、 一种发送装置, 其特征在于, 包括:
信息获取单元, 用于获取信道反馈参数, 并根据所述信道反馈参数确定用 户的信道质量集合划分信息;
集合归属确定单元, 用于根据所述信道质量集合划分信息以及各用户的信 道质量, 确定各用户所属的集合;
信道质量反馈信息发送单元, 用于将分属于不同集合的用户的信道质量反 馈信息发送给基站。
17、 根据权利要求 16所述的发送装置, 其特征在于, 所述信道反馈参数包 括反馈门限值和步长, 所述用户的信道质量集合划分信息包括将所述用户的信 道质量划分成至少三个用户信道质量集合;
所述集合归属确定单元包括:
比较模块, 用于将不同用户的信道质量指示值与用户信道质量集合划分进 行比较;
信息发送模块, 用于将比较结果发送给所述信道质量反馈信息发送单元, 以使所述信道质量反馈信息发送单元将分属于不同集合的用户的信道质量反馈 信息发送给基站。
18、 一种通信系统, 其特征在于, 包括:
基站, 用于获取信道反馈参数, 并根据所述信道反馈参数, 将用户的信道 质量划分成至少三个用户信道质量集合, 及分别接收由所述用户信道质量集合 中的用户发送的信道质量反馈信息, 获取用户的分布情况;
用户终端, 用于获取所述信道反馈参数, 并根据所述信道反馈参数确定用 户的信道质量集合划分信息, 根据所述信道质量集合划分信息以及各用户的信 道质量, 确定各用户所属的集合, 将分属于不同集合的用户的信道质量反馈信 息发送给所述基站。
PCT/CN2009/070465 2009-02-18 2009-02-18 获取和发送信道质量反馈信息的方法、装置及通信系统 WO2010094174A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200980147346.1A CN102239721B (zh) 2009-02-18 2009-02-18 获取和发送信道质量反馈信息的方法、装置及通信系统
PCT/CN2009/070465 WO2010094174A1 (zh) 2009-02-18 2009-02-18 获取和发送信道质量反馈信息的方法、装置及通信系统

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2009/070465 WO2010094174A1 (zh) 2009-02-18 2009-02-18 获取和发送信道质量反馈信息的方法、装置及通信系统

Publications (1)

Publication Number Publication Date
WO2010094174A1 true WO2010094174A1 (zh) 2010-08-26

Family

ID=42633421

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2009/070465 WO2010094174A1 (zh) 2009-02-18 2009-02-18 获取和发送信道质量反馈信息的方法、装置及通信系统

Country Status (2)

Country Link
CN (1) CN102239721B (zh)
WO (1) WO2010094174A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104468052A (zh) * 2013-09-23 2015-03-25 联芯科技有限公司 信道质量指示信息的选择方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20210011277A (ko) * 2019-07-22 2021-02-01 삼성전자주식회사 채널 피드백에 기초한 멀티캐스트 전송을 위한 방법 및 장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811709A2 (en) * 2006-01-18 2007-07-25 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving data in a communication system
CN101052141A (zh) * 2007-05-11 2007-10-10 中兴通讯股份有限公司 多媒体广播组播业务质量控制和调整方法
WO2007148934A1 (en) * 2006-06-21 2007-12-27 Lg Electronics Inc. Method for supporting quality of multimedia broadcast multicast service (mbms) in mobile communications system and terminal thereof
CN101155403A (zh) * 2006-09-30 2008-04-02 中兴通讯股份有限公司 一种提高多媒体广播/组播业务服务质量的方法
CN101242566A (zh) * 2007-02-08 2008-08-13 鼎桥通信技术有限公司 多媒体广播多播业务传输方法、系统及基站

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1811709A2 (en) * 2006-01-18 2007-07-25 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving data in a communication system
WO2007148934A1 (en) * 2006-06-21 2007-12-27 Lg Electronics Inc. Method for supporting quality of multimedia broadcast multicast service (mbms) in mobile communications system and terminal thereof
CN101155403A (zh) * 2006-09-30 2008-04-02 中兴通讯股份有限公司 一种提高多媒体广播/组播业务服务质量的方法
CN101242566A (zh) * 2007-02-08 2008-08-13 鼎桥通信技术有限公司 多媒体广播多播业务传输方法、系统及基站
CN101052141A (zh) * 2007-05-11 2007-10-10 中兴通讯股份有限公司 多媒体广播组播业务质量控制和调整方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104468052A (zh) * 2013-09-23 2015-03-25 联芯科技有限公司 信道质量指示信息的选择方法
CN104468052B (zh) * 2013-09-23 2018-08-03 联芯科技有限公司 信道质量指示信息的选择方法

Also Published As

Publication number Publication date
CN102239721B (zh) 2014-12-31
CN102239721A (zh) 2011-11-09

Similar Documents

Publication Publication Date Title
US20220272717A1 (en) Signal sending method and device, signal receiving method and device, information feedback method and device, communication node, and medium
EP3324658B1 (en) Sc-mcch sending method and apparatus, and sc-ptm receiving method and apparatus
CN108886671B (zh) 处理用于多播传输的准共址(qcl)配置的方法
US11051317B2 (en) SC-MCCH sending method and apparatus, and SC-PTM receiving method and apparatus
US8059625B2 (en) Distributed architecture and methods for broadcast/multicast service
US10659927B2 (en) Signal transmission method and apparatus
KR101323518B1 (ko) 브로드캐스트/멀티캐스트 서비스를 위한 적응적 베어러구성
US20090073911A1 (en) Feedback method for multicast service in wireless communication system, and a system implementing the method
CN112804765A (zh) 用于上行链路无授权随机接入中的链路自适应的装置和方法
JP2015502083A (ja) ブロードキャスト/マルチキャストサービスのための効率的な可変レート
WO2009000101A1 (en) A method and system of mbms data retransmisson
JP5472966B2 (ja) 移動通信システム、端末装置、基地局装置、およびデータ通信方法
WO2021004136A1 (zh) 组播反馈资源确定方法及装置、存储介质、用户设备
WO2022143772A1 (zh) 数据传输方法、设备和存储介质
KR20110127265A (ko) 협력 mimo에서 다운링크 서비스 데이터에 대한 콘텐츠 동기화를 수행하는 방법 및 그 장치
WO2014078981A1 (zh) 调度无线资源的方法、网络设备和用户设备
WO2019000873A1 (zh) 一种调制编码方式的调整方法及基站
WO2010094174A1 (zh) 获取和发送信道质量反馈信息的方法、装置及通信系统
JP5136646B2 (ja) 通信制御方法、無線装置、基地局
US9668238B1 (en) Multicast file delivery
CN111130723B (zh) V2x传输中实现灵活反馈的方法、装置及用户设备
WO2015110630A1 (en) Efficient multicasting method and system applying direct device-to-device connections
WO2018139365A1 (ja) 通信システム、基地局、移動局及び通信方法
CN104995932B (zh) 一种无线资源分配的方法及装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 200980147346.1

Country of ref document: CN

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09840225

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09840225

Country of ref document: EP

Kind code of ref document: A1