WO2011023033A1 - Method for obtaining transmitting power, method and system for measuring channel quality and interference intensity - Google Patents

Abstract

A method for obtaining transmitting power, a method and system for measuring channel quality and interference intensity are disclosed in the present invention, wherein the method for measuring channel quality is used to measure the channel quality information in wireless communication system and includes the following step: base station transmits a reference signal in the frequency partition through the downlink channel to enable a terminal to use the reference signal to measure the channel quality information of the frequency partition. By the present invention, the base station can transmit the reference signal in every frequency partition through the downlink channel according to the transmitting power of the every frequency partition to enable the terminal to use the reference signal to measure the channel quality information of every frequency partition, and so the accuracy of the measured channel quality information in the terminal can be improved.

Description

The present invention relates to the field of mobile communications technologies, and in particular, to a method for acquiring a transmit power, a method and a system for measuring a channel quality/thousand strength. In a wireless communication system, a base station refers to a device that provides services for a terminal, and a base station communicates with a terminal through an uplink/downlink, where downlink or forward refers to a direction from the base station to the terminal, and uplink or reverse refers to the terminal to The direction of the base station. A plurality of terminals can simultaneously transmit data to the base station through the uplink, or can simultaneously receive data from the base station through the downlink. In the data transmission system using the base station scheduling control, the scheduling allocation of all resources of the system is usually performed by the base station, for example, the resource allocation situation when the base station performs downlink transmission and the resources that can be used when the terminal performs uplink transmission, etc. The allocation is scheduled by the base station. In an Orthogonal Frequency Division Multiplexing (OFDM) system, when downlink data transmission is performed between the same base station and different terminals in the same area, since these downlinks are orthogonal to each other, Avoid interference in the community. However, the downlink between different cells may not be orthogonal. Therefore, each terminal may be subjected to downlink interference from other neighboring cell base stations, that is, inter-cell interference. Reducing the impact of inter-cell interference on system performance is an important goal of cellular system design. If the interference between cells is severe, the system capacity will be reduced, especially the transmission capacity of the cell edge users, which will affect the coverage capability of the system and the terminal. Performance. In order to overcome the inter-cell interference, a part of the frequency reuse technology (FFR) can be used to allocate resources of different sub-carrier power levels to the corresponding terminals, so as to increase the strength between the cells. FIG. 1 is a schematic diagram of a frequency resource allocation manner of adjacent three sectors and a transmission power limitation of each frequency partition (Frequency Partition, FP for short). As shown in Figure 1, the main principles of FFR are: First, the available frequency resources are divided into N (N is an integer greater than zero) FP, SL N=4, and the available frequency resources are divided into [ , Ρ ₂ , Ρ ₃ , Ρ ₄ ]. Where , ₂ , Ρ ₃ , Ρ ^ frequency reuse factor is 3 (ie Reuse3, also known as Reuse 1/3), the frequency resource in the middle is allocated to one of the three adjacent sectors, and the other two fans The frequency resource cannot be used by the area or the method of limiting the subcarrier transmit power of the frequency resource is used to use the frequency resource; ^ the frequency reuse factor is 1 (ie Reuse 1), three adjacent sectors; * can be used Frequency resource. Then, each terminal feeds back M (M ≥ 1) FPs to the base station by measuring the channel quality of each FP (for example, the average signal of each FP and the interference and noise ratio SINR, or the interference measurement of each FP). Channel quality information to the base station. Finally, the base station allocates resources to the terminal according to the channel quality information of the FP reported by the terminal. According to the above description, the base station can allocate resources to the terminal only by knowing the channel quality information of each terminal on each FP. However, in the related art, the terminal measures channel quality information of each frequency partition by using an intermediate pilot signal. For the frequency partitions with different transmit powers, the transmit power of the intermediate pilot signals sent by the base station are the same, so that the channel quality information measured by the terminal is not accurate enough. SUMMARY OF THE INVENTION In view of the above, the present invention provides a channel quality measurement solution, which is used to solve the problem that the channel quality information measured by the terminal on each FP cannot be accurate in the prior art. According to an aspect of the present invention, a channel quality measuring method for measuring channel quality information in a wireless communication system is provided. The channel quality measurement method according to the present invention includes: the base station transmitting a reference signal on the frequency partition through the downlink channel, so that the terminal measures channel quality information of the frequency partition by using the reference signal. According to another aspect of the present invention, a method of measuring a disturbance intensity is provided. The method for measuring the interference intensity according to the present invention includes: the base station does not transmit any information on the predetermined time-frequency resource, wherein the predetermined time-frequency resource includes one or more symbols in the time domain, and the frequency domain includes one or more frequency partitions. Subcarrier; by measuring the signal on the predetermined time-frequency resource, The terminal obtains the interference strength on one or more of the frequency partitions described above. According to still another aspect of the present invention, a method for acquiring a transmit power is provided, the method being used for acquiring, by a terminal, transmit power configuration information of a frequency partition. The method for acquiring a transmission power according to the present invention includes: the base station notifying the terminal of the transmission power configuration information of the frequency partition through the downlink channel. According to still another aspect of the present invention, a channel quality measuring system is provided. A channel quality measurement system according to the present invention includes: a base station and a terminal. The base station is configured to send a reference signal on the frequency partition by using the downlink channel, and the terminal is configured to receive the reference signal, and measure channel quality information of the frequency partition according to the reference signal. According to still another aspect of the present invention, a disturbance intensity measuring system is provided. A disturbance intensity measuring system according to the present invention includes: a base station and a terminal. The base station is configured to not transmit any content on the predetermined time-frequency resource, so that the terminal that uses the base station as the serving base station receives only signals from other base stations except the base station on the predetermined time-frequency resource, where the predetermined time-frequency resource is received. The time domain includes one or more symbols, and the frequency domain includes subcarriers on one or more frequency partitions; and the terminal is configured to measure signals on the predetermined time-frequency resources to obtain the interference strength on one or more frequency partitions. According to still another aspect of the present invention, a transmission power acquisition system is provided. A transmission power acquisition system according to the present invention includes: a base station and a terminal. The base station is configured to notify the terminal of the transmit power configuration information of the frequency partition by using the downlink channel, and the terminal is configured to receive the notification sent by the base station, and obtain the transmit power configuration information of the frequency partition according to the notification. With the above at least one solution of the present invention, the base station transmits the reference signal on each FP through the downlink channel through the downlink channel, so that the terminal measures the channel quality information of each frequency partition by using the reference signal, thereby improving the channel measured on the terminal. The accuracy of the quality information. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is a schematic diagram of a frequency resource allocation method of adjacent sectors in the prior art and a transmission power limitation condition of each frequency partition; FIG. 2 is a flowchart of a channel quality measurement method according to an embodiment of the present invention; 3 is a flowchart of a method for measuring a disturbance intensity according to an embodiment of the present invention; FIG. 4 is a flowchart of a method for acquiring transmission power according to an embodiment of the present invention; FIG. 5 is a schematic diagram of a frame structure of an 802.16m system according to an embodiment of the present invention; FIG. 6 is a schematic diagram of FP partitioning and power allocation of base stations of three adjacent sectors after an FFR is enabled in an 802.16m system according to an embodiment of the present invention; FIG. 7 is a transmission of each frequency partition of each base station in Embodiment 1. FIG. 8 is a schematic diagram of transmitting reference signals of respective frequency partitions of each base station in Embodiment 2; FIG. 9 is a flowchart showing a structure and data processing of a system using MIMO technology and precoding technology; FIG. 10 is an embodiment. FIG. 11 is a schematic diagram of transmitting reference signals by respective frequency partitions of each base station in FIG. FIG. 12 is a schematic diagram of transmitting reference signals in respective frequency partitions of respective base stations in Embodiment 5; FIG. 13 is a schematic diagram of transmitting reference signals in respective frequency partitions of each base station in Embodiment 6; FIG. 14 is a schematic diagram of each base station in Embodiment 7 FIG. 15 is a schematic diagram of transmitting reference signals in respective frequency partitions of respective base stations in Embodiment 8; FIG. 16 is a schematic diagram of transmitting reference signals in respective frequency partitions of each base station in Embodiment 9; FIG. 18 is a schematic diagram of transmitting reference signals in respective frequency partitions of respective base stations in Embodiment 11; FIG. FIG. 19 is a schematic diagram of transmitting reference signals in respective frequency partitions of respective base stations in Embodiment 12; FIG. 20 is a schematic diagram of transmitting reference signals in respective frequency partitions of each base station in Embodiment 13; FIG. 21 is a diagram showing each base station in Embodiment 14 A schematic diagram of a reference signal transmitted by each frequency partition. In the embodiment of the present invention, in the embodiment of the present invention, in order to allocate the resources of the different sub-carrier power levels to the corresponding terminals, the base station first needs to obtain the channel quality information of each frequency partition measured by the terminal. A channel quality measurement method for measuring channel quality information in a wireless communication system. In the embodiment of the present invention, the base station sends a reference signal on the frequency partition by using the downlink channel, where the base station transmits the reference power of the reference signal on each frequency partition corresponding to the transmit power (for example, the average transmit power) of the frequency partition, and the terminal The channel quality is measured by the reference signal, so that the accuracy of the measured channel quality information can be improved. The embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The preferred embodiments of the present invention are described in the following with reference to the accompanying drawings, which are intended to illustrate and illustrate the invention. At present, the terminal measures channel quality information of each frequency partition by using an intermediate pilot signal, and for a frequency partition with different transmission power, the transmission power of the intermediate pilot signal transmitted by the base station is the same, so that the channel quality information measured by the terminal is obtained. Insufficient for the problem, the embodiment of the present invention provides three solutions. The first scheme is that the base station sends a reference signal to the terminal on the frequency partition, by which the terminal can measure the channel quality information of the frequency partition; the second scheme is that the serving base station of the terminal is in one or more frequency partitions. No content is transmitted on a predetermined time domain of the predetermined subcarrier, so that the terminal only receives signals from other base stations on the time-frequency resource, so that the interference intensity on the one or more frequency partitions can be obtained; Instructing the terminal to inform the terminal of the transmit power level of one or more frequency partitions, so that the terminal obtains the transmit power configuration of each frequency partition. The three methods are described separately below. According to an embodiment of the present invention, a channel quality measurement method for measuring channel quality in a wireless communication system is first provided. 2 is a flowchart of a channel quality measurement method according to an embodiment of the present invention. As shown in FIG. 2, a channel quality measurement method according to an embodiment of the present invention mainly includes the following steps (step S201 - steps) S203): Step S201: The base station sends a reference signal on one or more frequency partitions by using a downlink channel, where the reference signal is used by the terminal to measure channel quality information of the one or more frequency partitions; specifically, the base station needs to be in the frequency The reference signals on the frequency partitions in the set of partitions may be determined by the base station, may be determined by the upper layer network element and notified to the base station, or may be determined according to a preset standard default configuration. The upper layer network element may be one of the following network elements: a base station, a relay device, a base station controller, an access service network, a connection service network, a core network, a core network gateway, and the like. Specifically, the channel quality information that the terminal needs to measure includes at least one of the following: received signal strength indication information, interference measurement value, signal to interference and noise ratio (SINR), signal to interference ratio, signal to noise ratio, spectrum Efficiency; and other measurements related to channel quality. In a specific application, the content and structure of the reference signal sent by the base station are known by the base station and the terminal, and the specific base station may determine the content and structure of the reference signal by negotiating with the terminal in advance, or the content and structure of the reference signal. It can also be configured by standard. Moreover, in a specific application, the reference signal may be a pilot sequence (for example, an intermediate pilot). If the intermediate pilot is used, the sequence composition of the intermediate pilot may be configured by a standard, and the terminal obtains by measuring the intermediate pilot. Channel quality information on each frequency partition. Specifically, the base station may send the reference signal on a specific subcarrier of the one or more frequency partitions, where the specific subcarrier may be determined by the base station, or may be determined by the upper layer network element and notified to the base station, or The upper layer network element may also be one of the following network elements: a base station, a relay device, a base station controller, an access service network, a connection service network, a core network, a core network gateway, and the like. Specifically, the base station transmits the transmit power of the reference signal on the specific subcarrier of the one or more frequency partitions according to the transmit power of each frequency partition (ie, the average transmit power of the subcarriers of each frequency partition), specifically, a certain The higher the transmit power of the frequency partitions, the higher the transmit power of the base station transmitting the reference signal on a particular subcarrier of the frequency partition. Preferably, the transmit power of the base station transmitting the reference signal on the specific subcarrier of each frequency partition may be the same as the transmit power of the data subcarrier of the frequency partition; or, the base station transmits the transmit of the reference signal on a specific subcarrier of each frequency partition. The power and the transmit power of the data subcarriers of the frequency partition maintain a determined transmit power difference. Step S201: The terminal receives the reference signal, and obtains channel quality information of the one or more frequency partitions by measuring the reference signal. According to an embodiment of the present invention, a method for measuring a disturbance intensity is also provided. 3 is a flowchart of a method for measuring a disturbance intensity according to an embodiment of the present invention. As shown in FIG. 3, the method for measuring a disturbance intensity according to an embodiment of the present invention mainly includes the following steps (step S301 - step S303): S301: The base station does not send any content on the predetermined time-frequency resource, so that the terminal only receives signals from other base stations except the base station on the time-frequency resource, where the predetermined time-frequency resource includes one or more in the time domain. Symbols, the frequency domain includes subcarriers on one or more frequency partitions; Step S303: The terminal obtains the interference strength on the one or more frequency partitions by measuring signals on the predetermined time-frequency resources. The terminal is a terminal or a plurality of terminals of the base station being the base station. Since the serving base station of the terminal does not send any signal on the predetermined time-frequency resource, the terminal receives the signal on the time-frequency resource as a signal from another base station, and by measuring the signal, the terminal can obtain the corresponding frequency partition. Disturbance intensity. Specifically, the predetermined time-frequency resource may be determined by the monthly service base station, or may be determined by the upper-layer network element and notified to the monthly service base station, or may be determined according to a standard default configuration. The upper layer network element may be one of the following network elements: a base station, a relay device, a base station controller, an access service network, a connection network, a core network, a core network gateway, and the like. In the specific implementation process, the predetermined time-frequency resources corresponding to different base stations on the same frequency partition may be the same or different, and preferably, the predetermined time-frequency resources corresponding to different base stations on the same frequency partition are different. According to an embodiment of the present invention, a method for acquiring a transmit power is also provided, where the method is used for acquiring, by a terminal, a transmit power configuration of a frequency partition. 4 is a flowchart of a method for acquiring a transmission power according to an embodiment of the present invention. As shown in FIG. 4, the method for acquiring a transmission power according to an embodiment of the present invention mainly includes the following steps (step S401 - step S403): Step S401: A base station transmitting power allocation information of one or more frequency partitions through a downlink channel Notify the terminal. The one or more frequency partitions may be part or all of the frequency partitions in the frequency partition set. In a specific implementation process, the base station may notify the terminal of the transmit power configuration information of the one or more frequency partitions in the following manner:

(1) The base station carries the transmit power configuration information of the one or more frequency partitions in the signaling and sends the information to the terminal. Specifically, the transmit power configuration information may include an absolute value of the transmit power of each frequency partition, or may be The transmit power of one of the frequency partitions is used as a reference power, and the absolute value of the reference power and the relative transmit power value of the other respective frequency partitions relative to the transmit power are included in the transmit power configuration information;

(2) pre-storing a transmission power configuration index table of a frequency partition in the base station and the terminal, where the index table records respective transmission power configuration information of each frequency partition in the frequency partition set according to the index information, and the base station notifies the terminal one or more And transmitting the index information corresponding to the transmit power configuration information of the one or more frequency partitions in the index table to the terminal, where the terminal is instructed by the index information to obtain one or more of the foregoing The location of the transmit power configuration information of the frequency partition in the index table, thereby acquiring transmit power configuration information of the one or more frequency partitions;

^ΡΗΦ、 ^P _wi],BS3中 [^{F FP FP}3、 ^FA]的平均子载波发射功 率为 d ^PLow ^PL。w2、 ^PHigh 。 本实施例， BS1中 [^、 ^{FP FP} ^^]的平均子 载波发射功率为^ ^Ρ。、 ^/2 ^ο 2], _BS2 中 、 FP₂、 FP, ¾]的平均子载 波发射功率为^ ^{/2 P}。、 ^Po^/2l BS3 中 、 ^{FP FP}3、 的平均子载波 发射功率为 [

/2 ] 实施例一 在本实施例中， 以单天线的例， 对本发明实施例提供的上述第一种方法 进行说明。 在本实施例中， 当 FFR使能后， 基站通过发送参考信号以供终端测量 FP的信道质量信息， 终端将测量得到的 FP的信道质量信息反馈给基站， 基 站才艮据收到的反馈信息以及已经存储的终端相关信息为终端分配资源。 其中， BS1 BS2 BS3发送的参考信号为终端已知的信号， 并且发送参 考信号的周期可以相同或不同， 本实施例中假设 BS1 BS2 BS3都利用相 同超帧内相同帧内的子帧 SF2 ( Subframe2 )的最后一个 OFDM符号（即第 6 个 OFDM符号）发送参考信号， 如图 7所示， 参考信号具体占用的子载波位 置如图 7中黑色方块的子载波 SC1至 SC8 BS1 BS2 BS3发送参考信号 占用子载波的发射功率需要 居相应基站在 FP1 FP2 FP3和 FP4上的平均 子载波功率进行配置。 BS1 中子载波 SC1和 SC2的发射功率要参考 FP1的 平均子载波发射功率 P。， 即/^^^^土^^ ， 其中， A_CTn_SS1表示 SC1 和 SC2的发射功率， _SS1表示 /^ ₂ 的浮动系数， 即反映允许 ₁₍^₂ 相 对于 P。的浮动大小。同理， BS1 中子载波 SC3和 SC4的发射功率要参考 FP2 的平均子载波发射功率 P。， 即 A_CT。 ₄^ =(1±A_2SS1)P。； BS1中子载波 SC5和 (3) The base station sends the preset signaling to the terminal, and the terminal acquires the transmit power configuration information of the frequency partition corresponding to the preset signaling according to the correspondence between the pre-stored preset signaling and the transmit power configuration information of the frequency partition. . The preset signaling includes one of the following: identity information of the base station (IDCell), identification information of the sector (StagelD), and information of the evolved secondary preamble index (hereinafter referred to as SA-Preamble Index). The foregoing correspondence relationship refers to a correspondence between the preset signaling and the transmit power configuration information of the one or more frequency partitions, and the terminal may obtain the one or more by receiving the preset signaling and according to the correspondence. Transmit power configuration information for frequency partitions. In the specific implementation process, the foregoing correspondence relationship stored by the terminal may be a standard default configuration, or may be determined after being negotiated with the base station in advance. Step S403: The terminal receives the notification sent by the base station, and obtains the transmit power configuration information of the one or more frequency partitions according to the notification. Corresponding to the above three methods, the embodiments of the present invention provide three systems for respectively implementing the above three methods. The description is separately made below. According to an embodiment of the present invention, a channel quality measurement system is also provided. A channel quality measurement system according to an embodiment of the present invention includes: a base station and a terminal, where the base station is configured to send a reference signal on a frequency partition by using a downlink channel; and the terminal is configured to receive the reference signal, and measure the reference signal according to the reference signal Channel quality information of the above frequency partition. According to an embodiment of the invention, a disturbance intensity measuring system is also provided. The interference strength measurement system according to the embodiment of the present invention includes: a base station and a terminal, where the base station is configured to not transmit any content on the predetermined time-frequency resource, so that the base station is used as the terminal of the monthly base station at the predetermined time The frequency resource only receives signals from other base stations except the base station, where the predetermined time-frequency resource includes one or more symbols in the time domain, and the frequency domain includes subcarriers on one or more frequency partitions; The signal on the predetermined time-frequency resource is measured to obtain the interference intensity on the one or more frequency partitions. According to an embodiment of the present invention, a transmission power acquisition system is also provided. A transmit power acquisition system according to an embodiment of the present invention includes: a base station and a terminal. The base station is configured to notify the terminal of the transmit power configuration information of the frequency partition by using the downlink channel, and the terminal is configured to receive the foregoing notification, and obtain, according to the notification, the transmit power configuration information of the frequency partition. In order to further understand the above technical solutions provided by the embodiments of the present invention, the technical solutions provided by the embodiments of the present invention are described below through specific embodiments. In the following embodiments, the frame structure shown in FIG. 5 and the FP partition and power allocation of the base stations of three adjacent sectors shown in FIG. 6 will be described as an example. Figure 5 shows the frame structure of an 802.16m system. As shown in Figure 5, a superframe is 20ms, including 4 frames. One frame is 5 ms, including 8 subframes (Subframe) „ One subframe includes K OFDM symbols (Symbol), in this embodiment, K is 6. One OFDM symbol includes N (N>=1) subcarriers in the frequency domain. (Subcarrier ) „ and N subcarriers can be divided into M frequency partitions ( FrequencyPartition ). In this embodiment _ Let M be 4, divide the subcarriers into 4 FPs, that is, FP1 FP2 FP3 and FP4. Figure 6 shows the FP partitioning and power allocation of the base stations BS1 BS2 BS3 of three adjacent sectors after the FFR is enabled in an 802.16m system. Schematic diagram of the situation. As shown in FIG. 6, the frequency resource is first divided into four FPs, wherein the frequency reuse factor of FP2 FP3 FP4 is Reusel/3, and the frequency reuse factor of FP1 is Reusel BS1, and the average subcarrier transmit power of ^FP ^ ^FP is [ P _re "^ ^P m _g k, _W 2], the average subcarrier transmit power of [ ^{F FP FP} 3, ^F A] in BS2 is [d

^Ρ Η Φ, ^P _w i], the average subcarrier transmission power of [ ^{F FP FP} 3, ^F A] in BS3 is d ^P Low ^P L . W2, ^P High. In this embodiment, the average subcarrier transmission power of [^, ^{FP FP} ^^] in BS1 is ^ ^Ρ . , ^/2 ^ο 2], the average subcarrier transmit power of _BS2 , FP ₂ , FP, 3⁄4] is ^ ^{/2 P} . , ^P o ^/2 l BS3, ^{FP FP} 3, the average subcarrier transmit power is [

/2] Embodiment 1 In this embodiment, the first method provided by the embodiment of the present invention is described by using a single antenna. In this embodiment, after the FFR is enabled, the base station sends the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the measured channel quality information of the FP to the base station, and the base station receives the feedback information according to the received information. And the terminal related information that has been stored allocates resources to the terminal. The reference signal transmitted by the BS1 BS2 BS3 is a signal known by the terminal, and the period of the transmission reference signal may be the same or different. In this embodiment, it is assumed that the BS1 BS2 BS3 utilizes the subframe SF2 in the same frame in the same superframe (Subframe2). The last OFDM symbol (ie, the 6th OFDM symbol) transmits a reference signal. As shown in FIG. 7, the subcarrier position specifically occupied by the reference signal is as shown in the black square subcarriers SC1 to SC8 BS1 BS2 BS3 in FIG. The transmit power of the occupied subcarriers needs to be configured with the average subcarrier power of the corresponding base station on FP1 FP2 FP3 and FP4. The transmission power of the subcarriers SC1 and SC2 in BS1 is to be referred to the average subcarrier transmission power P of FP1. , ie /^^^^土^^ , where A _CT n _SS1 represents the transmit power of SC1 and SC2, and _SS1 represents the floating coefficient of /^ ₂ , which reflects the allowable _{1 (} ^ ₂ phase For P. The size of the float. Similarly, the transmit power of subcarriers SC3 and SC4 in BS1 should refer to the average subcarrier transmit power P of FP2. , ie A _CT . ₄ ^ = (1 ± A _2SS1 ) P. ; BS1 subcarrier SC5 and

The transmit power of SC6 should refer to the average subcarrier transmit power of FP3. /2 , that is, ^P sc orsce^sx = 0 ^Δ ₃ ) / 2; the transmission power of subcarriers SC7 and SC8 in BS 1 is to refer to the average subcarrier transmission power FP of FP4. /2, which is A _CT . ^ _SS1 = (l ± A _4SS1 ) P. /2. In this embodiment,

PsC △I,asi,

PsC

p = P 12, P = P 12 Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS2 is Pw _mi = P _n p = /? , P = P , ' P = P 12 Similarly, assuming subcarrier SC1 in BS3 -SC8's transmit power is Λ

~ '0 - 0 In this embodiment, it is assumed that the serving base station of the terminal MS1 is BS1, and after the BS1 transmits the reference signal in the sixth OFDM symbol of the subframe SF2 (Subframe2), the terminal MS1 measures the channel quality on the subcarriers SC1 to SC8. The information is fed back to BS1 with channel quality information of a specific FP. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FP base stations BS1 BS2 BS3 using the sixth of the subframe SF2. The subcarriers SC1-SC8 of the OFDM symbols may also transmit data information by using other available subcarriers on the symbol while transmitting the reference signal. Alternatively, the base station BS1 BS2 BS3 utilizes the subcarrier SC1- of the sixth OFDM symbol of the subframe SF2. While the SC8 transmits the reference signal, the other subcarriers on the symbol do not transmit the content; specifically, the base station BS1 BS2 BS3 may transmit the reference signal by using all available subcarriers of the 6th OFDM symbol of the subframe SF2; The transmission position of the signal is not limited to the sixth OFDM symbol of the subframe SF2 selected in the embodiment, but may be located in other symbols, or may be located in other downlink subframes, or may be located in multiple OFDM symbols. In addition, in the 802.16m system, the reference signal can be combined with the intermediate pilot (Miniamble) to make the channel quality measurement of the FP more accurate. The terminal MS 1 obtains the channel matrix of the FP by measuring the intermediate pilot, and obtains the channel quality information of the FP by measuring the reference signals SC1 to SC8, and feeds back the channel quality information of the specific FP to the BS 1. The specific FP may be notified by the base station to the terminal MS 1 or by the terminal MS 1 and may be connected to the base station BS 1 , where the specific FP may include one or more FPs or all FPs, where the intermediate pilots ( Midamble) refers to a specific pilot sequence transmitted on a specific symbol in a frame, used for channel measurement at the receiving end, the transmission period of the intermediate pilot is 1 frame, and the transmission power of all subcarriers occupied by the intermediate pilot the same. The intermediate pilot can be used to estimate the channel of all subcarrier locations over the entire symbol. Embodiment 2 In this embodiment, a single antenna is taken as an example for description. In this embodiment, after the FFR is enabled, the base station sends the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the measured channel quality information of the FP to the base station, and the base station receives the feedback information according to the received information. And the terminal related information that has been stored allocates resources to the terminal. The reference signal transmitted by the BS 1 BS2 BS3 is a signal known by the terminal, and includes a pilot reference signal and a data reference signal. In this embodiment, the reference signal has the same transmission period, and the BS 1 BS2 BS3 transmits the reference signal by using the last OFDM symbol (the sixth OFDM symbol) of the same intra subframe SF2 (Subframe2) in the same superframe, as shown in FIG. 5. P1 is the pilot reference signal of BS1, P2 is the pilot reference signal of BS2, P3 is the pilot reference signal of BS3, the transmission power of P1 P2 P3 subcarrier is the same, and the subcarrier position occupied by the data reference signal is specifically The transmission power of the subcarriers SC1 to SC8 BS 1 BS2 BS3 as shown in FIG. 8 for transmitting the data reference signal occupies the subcarriers needs to be configured according to the average subcarrier powers of the respective base stations on FP1 FP2 FP3 and FP4. The transmit power of the subcarriers SC1 and SC2 in BS 1 is referred to the average subcarrier transmit power PQ of FP1, that is, Ρ« = (1 ΔΔ )Ρ. , where Ρ „ denotes the transmit power of SC1 and SC2, and Δ denotes the floating coefficient of /^, which reflects the allowable floating size of / ^ _SS1 relative to Ρ _0. Similarly, the transmit power of sub-carriers SC3 and SC4 in BS 1 is Refer to the average subcarrier transmit power _{FP of} FP2, that is, P _{s orSC} = G soil); the transmit power of subcarriers SC5 and SC6 in BS 1 should refer to the average subcarrier transmit power FP /2 of FP3, that is, ^P sc5orsc6^ = G ^Δ ₃ ) / 2 ; The transmit power of the subcarriers SC7 and SC8 in BS 1 is to refer to the average subcarrier transmit power P of FP4. /2, which is A _CT . ^ _SS1 = (l ± A _4SS1 ) P. /2. In this embodiment,

~ '

¹ p SC5orSC6, BS\ = ^J P 0/ '2, ^{, 1} P SC, orSC , BS = ^J P 0/ ⁷ 2 ^ ° Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS2 is P _s

SC3orSC4, BS2 ~ ^A 0 ¹ ^ ' ^A SC5orSC6, BS2 - ^J 0 , ^A SC7orSC^, BS2 - ^J 0 Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS3 is P _s

SC3orSC4, BS3 — ^J 0 , ^ , ^A SC5orSC6, BS3 — ^J 0 , ^ , ^A SC7orSC^, BS3 — ^J 0 In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and when BS1 is in subframe SF2 (Subframe2) After transmitting the reference signal by the sixth OFDM symbol, the terminal MS1 measures the pilot reference signal P1 to obtain the channel matrix of the FP, and obtains the channel quality information of the FP by measuring the data reference signals SC1 to SC8, and feeds back the channel quality information of the specific FP to the BS1. . The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. Moreover, in the present embodiment, the base station BS1 does not transmit data on the subcarriers on which the BS2 transmits the pilot reference signal P2, and the base station BS1 does not transmit data on the subcarriers on which the BS3 transmits the pilot reference signal P3. The base station BS1 may transmit or not transmit data information by using other available subcarriers on the symbol of the transmission reference signal. For the same reason, the same processing can be applied to the base stations BS2 and BS3. The base station BS1, BS2, and BS3 may use the all available subcarriers of the sixth OFDM symbol of the subframe SF2 to transmit the reference signal. It should be noted that the transmission position of the reference signal is not limited to the subframe SF2 selected in this embodiment. The six OFDM symbols may be located in other OFDM symbols, or may be located in other downlink subframes, or may be located in multiple OFDM symbols. Embodiment 3 This embodiment describes a multi-antenna as an example. In this embodiment, after the FFR is enabled, the base station sends the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the measured channel quality information of the FP to the base station, and the base station receives the feedback information according to the received information. And the terminal related information that has been stored allocates resources to the terminal. In this embodiment, the system uses Multiple-Input Multiple-Output (MIMO) and Precoding (Precode). The structure and data processing flow of the system are shown in Figure 9. transmission data is divided into L (L> = 1) layers (layer), then the L ^ ¹ layer data into the MIMO encoder (MIMO encoder), to generate Mt (Mt> = L) data streams (stream Then, the Mt streams are sent to the precoder (Precoder), and finally the data to be transmitted is mapped to Nt antennas (Antenna) for transmission. The reference signals sent by BS 1, BS2, and BS3 are known signals of the terminal, and the transmission periods may be the same or different. In this embodiment, ^_"& BS 1, BS2, and BS3 all transmit reference signals by using the last OFDM symbol (6th OFDM symbol) of the subframe SF2 (Subframe2) in the same frame in the same superframe. The transmission process of the reference signal is specifically described as an example.

相对于 P₀的浮动大小。 同理， BS 1 中子载 波 SC5 至 SC8 的发射功率要参考 FP2 的平均子载波发射功率 P。， 即

= )Ρ。； BS1 中子载波 SC9和 SC12的发射功率要参考 FP3 的平均子载波发射功率 Ρ。/2, 即 =(l±A_3SS1)P。/2; BS1 中子载波 BS 1 first divides the modulated and encoded reference signal into L layers, then sends the data of the L layers into the MIMO encoder to generate M _t streams, and then sends the M _t streams to the Precoder, and finally the ^ ¹ reference signal Mapped to N _t antennas ( Antenna ) for transmission. The process of the Precoder is that after the M _t streams are sent into the Precoder, the base station selects a precoding matrix PM-a from the known precoding matrix set, and multiplies PM-a by M _t streams to map the result. Send to N _t antennas (Antenna). The base station may be configured by default by the standard when selecting the precoding matrix PM-a, or may be randomly selected by the base station and notify the terminal of the PMI number of the selected PM-a. As shown in FIG. 10, the reference signal is transmitted on N _t (negative N _t = 2 in this embodiment) antenna ( Antenna ), and the specifically occupied subcarrier positions are as shown in FIG. 10 with sub-carriers SC1 to SC16 of the padded block. . The transmission power of the BS 1 transmission reference signal occupying the subcarrier needs to be configured according to the average subcarrier power of the BS 1 on FP1, FP2, FP3 and FP4. The transmission power of the subcarriers SC1 to SC4 in BS 1 is to be referred to the average subcarrier transmission power P _{Q of} FP1, that is, /^^^:^^^^/ ³ . , where, represents the transmit power of SC1, SC2, SC3, SC4, the floating coefficient represented,

The size of the float relative to P ₀ . Similarly, BS 1 neutron loading The transmit power of the waves SC5 to SC8 is referred to the average subcarrier transmit power P of FP2. , which is

= )Ρ. The transmit power of subcarriers SC9 and SC12 in BS1 should refer to the average subcarrier transmit power FP of FP3. /2, ie = (l ± A _3SS1 ) P. /2; subcarrier in BS1

The transmit power of SC13 and SC16 is based on the average subcarrier transmit power P of FP4. /2, ie

= (1 ± Δ ) Ρ. /2. In this embodiment, Δ, Δ ₂ , Δ ₃ , Δ _{4 are} assumed to be equal to

0, MP = , p = , p = /? , P = P 12 Similarly, assume that the transmit power of subcarriers SC1-SC16 in _BS2 is P _SC1 _ _{SC4 BS2} = P. , ρ =Ρ 1 ¹ 2, Ρ =Ρ , ' Ρ =Ρ 1 '2 Similarly, assume that the transmit power of subcarriers SC1-SC16 in BS3 is /^_^ ₄₃ „ =Ρ _η ,

P. /2 /2, p = p In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and after the BS1 transmits the reference signal in the sixth OFDM symbol of the subframe SF2 (Subframe2), the terminal MS1 measures the subcarrier SC1. To the channel quality information on the SC16, the channel quality information of the specific FP is fed back to the BS1. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. The base stations BS1, BS2, and BS3 transmit the reference signals by using the subcarriers SC1-SC16 of the sixth OFDM symbol of the subframe SF2, and may also transmit the data information by using other available subcarriers on the symbol; or, the base stations BS1, BS2, and BS3 When the reference signals are transmitted by the subcarriers SC1-SC16 of the sixth OFDM symbol of the subframe SF2, the other subcarriers on the symbol do not transmit the content; the base stations BS1, BS2, and BS3 may utilize the sixth OFDM symbol of the subframe SF2. All the available subcarriers are used to transmit the reference signal. It should be noted that the location of the reference signal is not limited to the sixth OFDM symbol of the subframe SF2 selected in this embodiment, and may be located in other symbols or in other downlinks. Within the frame, it can also be located in multiple OFDM symbols. In addition, in the 802.16m system, the reference signal can be combined with the intermediate pilot (Miniamble) to make the channel quality measurement of the FP more accurate. The terminal MS1 obtains the channel moment of the FP by measuring the intermediate pilot And obtaining the channel quality information of the FP by measuring the reference signals SC1 to SC16, and feeding back the channel quality information of the specific FP to the BS 1. The specific FP may be notified by the base station to the terminal MS 1 or by the terminal MS 1 and may be connected to the base station BS 1 , and the specific FP may include one or more FPs or all FPs. Embodiment 4 This embodiment is described by taking multiple antennas as an example. In the first draft example, after the FFR is enabled, the base station transmits the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the measured channel quality information of the FP to the base station, and the base station receives the feedback information according to the received information. And the terminal related information that has been stored allocates resources to the terminal. In this embodiment, the system also adopts the structure shown in FIG. 9 as a data processing flow, wherein the reference signals transmitted by BS 1, BS2, and BS3 are signals known by the terminal, and the transmission period is the same. It is assumed in the present embodiment that BS 1, BS2, and BS3 both transmit reference signals using the last OFDM symbol (6th OFDM symbol) of subframe SF2 (Subframe2) in the same frame in the same superframe. The following describes the transmission process of the reference signal by taking BS 1 as an example.

BS 1 first divides the modulated and encoded reference signal into L layers, and then sends the data of the L layers into the MIMOencoder to generate M _t streams, ϋ M _t streams are sent to the Precoder, and finally the reference signals are mapped to N. Send on _t antennas (Antenna). The precoder process is: after the M _t streams are sent into the Precoder, the base station selects a precoding matrix PM-a from a known precoding matrix set by using a Precoding Matrix Indication (PMI), and Multiply PM-a by M _t streams and map the result to N _t antennas (Antenna ) for transmission. The base station may be configured by default by the standard when selecting the precoding matrix PM-a, or may be randomly selected by the base station and notify the terminal of the PMI number of the selected PM-a. A reference signal (in this embodiment is assumed that N _t = 2) transmission antenna occupies specific (Antenna) sub-carrier position shown in Figure 11, wherein the reference signal includes a pilot signal and the reference data of the reference signal in the N _t. Wherein P1-1 is the pilot reference signal of antenna 1 of BS 1, P1-2 is the pilot reference signal of antenna 2 of BS 1, and the pilot reference signal of BS 1, BS2 and BS3 is frequency division multiplexed. . The sub-carriers SC1 to SC16 of the black square are data reference signals. The transmission power required by the BS 1 transmission data reference signal to occupy the subcarriers is configured according to the average subcarrier power of the BS 1 on FP1, FP2, FP3 and FP4. The transmit power of subcarriers SC1 to SC4 in BS 1 should be referenced to the average of FP1. Subcarrier transmit power P. , ie P« ₄ ^ = (l soil _SS1 ) P. , where, represents SC1, SC2

The transmit power of SC3 and SC4, indicating the floating coefficient of /^ _TOSS1 , that is, reflecting the permission

BS1 中子载波 SC13 和 SC16的发射功率要参考 Relative to P. The size of the float. Similarly, the transmit power of the subcarriers SC5 to SC8 in BS1 should refer to the average subcarrier transmit power P of FP2. , ie ΑΟΠ = ( ^{1 ± Δ} ₂ ^) Ρ. The transmit power of subcarriers SC9 and SC12 in BS1 should refer to the average subcarrier transmit power FP of FP3. /2, ie

The transmit power of subcarriers SC13 and SC16 in BS1 should be referred to

The average subcarrier transmit power of FP4 is Ρ. /2 , ie P _SCT3 _ _SCT6 ^ = (1 ± Δ _{4 SS1} )P. / 2. In this embodiment,

Δ. , 八 , 八 ^ and the temple at 0 , then Ρς , ,

= P丄2,, P, = P 2. Similarly, assume that the transmit power of subcarriers SC1-SC16 in BS2 is P _s

=P /2, P = P , P =P 12 Similarly, the transmit power of subcarriers SC1-SC16 in BS3 is set to Λ

P. = P 12, P = P 12, P = p In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and after the BS1 transmits the reference signal in the sixth OFDM symbol of the subframe SF2 (Subframe2), the terminal MS1 The pilot reference signals P1-1, P1-2 are obtained to obtain a channel matrix of the FP, and the channel quality information of the FP is obtained by measuring the data reference signals SC1 to SC16, and the channel quality information of the specific FP is fed back to the BS1. The specific FP may be notified to the terminal MS1 by the base station or selected by the terminal MS1 and uploaded to the base station BS1. The specific FP may include one or more FPs or all FPs. The base station BS1 does not transmit data on the subcarriers on which the BS2 transmits the pilot reference signal P2, and the base station BS1 does not transmit data on the subcarriers on which the BS3 transmits the pilot reference signal P3. The base station BS1 may transmit or not transmit data information by using other available subcarriers on the symbol of the transmission reference signal. Similarly, the same processing can be performed for the base stations BS2 and BS3. The base stations BS1, BS2, and BS3 may transmit reference signals by using all available subcarriers of the sixth OFDM symbol of the subframe SF2; It should be noted that the transmission position of the reference signal is not limited to the sixth OFDM symbol of the subframe SF2 selected in this embodiment, and may be located in other OFDM symbols, or may be located in other downlink subframes, or may be located in multiple downlink subframes. Within OFDM symbols. Embodiment 5 This embodiment is described by taking a single antenna as an example. In this embodiment, the base station uses the intermediate pilot to transmit the reference signal. In the 802.16m system, the intermediate pilot (Midamble) refers to transmitting a specific pilot sequence on a specific symbol in one frame, and is used at the receiving end. Performing channel measurement, for example, transmitting an intermediate pilot on a first OFDM symbol in a penultimate subframe of the downlink subframe (subframe SF3 in this embodiment), and the intermediate pilot transmission period is 1 frame, and The transmit power of all subcarriers occupied by the intermediate pilot is the same. The intermediate pilot can be used to estimate the channel of all subcarrier positions on the entire symbol, which can facilitate the transmission end to use an efficient transmission strategy according to the current channel condition. In this embodiment, after the FFR is enabled, the base station sends a reference signal by using an OFDM symbol that transmits the intermediate pilot every N (N>=1) intermediate pilot transmission periods (ie, the symbol does not transmit the intermediate guide) The channel transmits the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the channel quality information of the measured FP to the base station, and the base station allocates resources to the terminal according to the received feedback information and the terminal related information already stored. In this embodiment, the reference signal sent by BS1, BS2, and BS3 is a signal known by the terminal, and the reference signal is transmitted by using the first OFDM symbol of the subframe SF3 (Subframe3), and the subcarrier position occupied by the reference signal is as shown in FIG. Black square subcarriers SC1 to SC8 are shown. The transmission power of the BS1, BS2, BS3 transmission reference signal occupying the subcarrier needs to be configured according to the average subcarrier power of the corresponding base station on FP1, FP2, FP3 and FP4. The transmit power of the subcarriers SC1 and SC2 in BS1 is to be referred to the average subcarrier transmit power _{P of FP1} . , ie /^^^^ soil ^^ , where, represents the transmit power of SC1 and SC2, and A _1SS1 represents / ^. The floating coefficient of _2SS1 , which reflects the allowable P _SCT . n _{SS1 is} relative to P. The size of the float. Similarly, the transmit power of subcarriers SC3 and SC4 in BS1 should refer to the average subcarrier transmit power P of FP2. That is ₃ . ₄ ^ = (1 ± Δ ₂ ) Ρ. ;

The transmit power of subcarriers SC5 and SC6 in BS1 should refer to the average subcarrier transmit power Po/2 of FP3, that is, A _C5 . ₆ =(1±Δ ₃ ) The transmit power of subcarriers SC7 and SC8 in BS1 is Refer to the average subcarrier transmit power P _Q /2 of FP4, that is, A _CT . ^ _SS1 = (l ± A _4SS1 ) P. /2. In the "1" column of this implementation, if Δ, Δ, Δ, Δ £ is set to dry 0, then J° = p , p = Ρ , p = P /2 , P = P 12 Similarly, assuming subcarrier SC1 in BS2 The transmit power of SC8 is P _s

P = P /2, P = P, P,. =P /2 Similarly, it is assumed that the transmission power of subcarriers SC1-SC8 in BS3 is P _s p = p 12 , P = P /2, P. In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and when BS1 is in the sub After transmitting the reference signal by the first OFDM symbol of the frame SF3 (Subframe2), the terminal MS1 measures the channel quality information on the subcarriers SC1 to SC8, and feeds back the channel quality information of the specific FP to the BS1. The specific FP may be notified to the terminal MS1 by the base station or selected by the terminal MS1 and uploaded to the base station BS1. The specific FP may include one or more FPs or all FPs. The base stations BS1, BS2, BS3 transmit the reference signals by using the subcarriers SC1-SC8 of the first OFDM symbol of the subframe SF3, and may also transmit the data information by using other available subcarriers on the symbol; or the base stations BS1, BS2, BS3 utilize The subcarriers SC1-SC8 of the first OFDM symbol of the subframe SF3 transmit the reference signal, and the other subcarriers on the symbol do not transmit the content; the base stations BS1, BS2, and BS3 may utilize all of the first OFDM symbols of the subframe SF3. The reference signal can be transmitted by using a subcarrier. Embodiment 6 This embodiment is described by taking a single antenna as an example.

In an embodiment, after the FFR is enabled, the base station transmits the reference signal by using an OFDM symbol that transmits the intermediate pilot every N (N>=1) intermediate pilot transmission periods (ie, the symbol does not transmit the intermediate pilot) And transmitting the reference signal) for the terminal to measure the channel quality information of the FP, the terminal feeds back the measured channel quality information of the FP to the base station, and the base station according to the received feedback information and the existing The stored terminal related information allocates resources to the terminal.

~ ' The reference signals transmitted by BS1, BS2, BS3 are known signals of the terminal. In this embodiment, it is assumed that the reference signal is transmitted by using the first OFDM symbol of the subframe SF3 (Subframe3), and the subcarrier position occupied by the reference signal is as shown in FIG. 10, and includes a pilot reference signal and a data reference signal. P1 is the pilot reference signal of BS1, P2 is the pilot reference signal of BS2, P3 is the pilot reference signal of BS3, and the transmission power of P1, P2, P3 subcarriers is the same, and the data reference signal is black square subcarrier as shown in FIG. SC1 to SC8 are shown. The transmission power of the BS1, BS2, and BS3 transmitting data reference signals occupying the subcarriers needs to be configured according to the average subcarrier powers of the corresponding base stations on FP1, FP2, FP3, and FP4. The transmission power of the subcarriers SC1 and SC2 in BS1 is to be referred to the average subcarrier transmission power P of FP1. , ie = (1 soil Δ ) Ρ. , where P _s . _BS shows the transmit power of SC1 and SC2, Δ denotes /^ _{1 (} the floating coefficient of ^ ₂ , that is, reflects the allowable / ^ ^ _SS1 floating size relative to Ρ _0. Similarly, the transmit power of sub-carriers SC3 and SC4 in BS1 To refer to the average subcarrier transmit power _{FP of} FP2, that is, P _{s orSC} = G soil); the transmit power of subcarriers SC5 and SC6 in BS 1 should refer to the average subcarrier transmit power FP of FP3. /2, that is, ^P sc orsce^sx = 0 ^Δ ₃ ) / 2; the transmission power of the subcarriers SC7 and SC8 in BS 1 is to refer to the average subcarrier transmission power P of FP4. /2, which is A _CT . ^ _SS1 = (l ± A _4SS1 ) P. /2. In this embodiment,

~ '

¹ p SC5orSC6, BS\ = ^J P 0/ '2, ^{, 1} P SC, orSC , BS = ^J P 0/ ⁷ 2 ^ ° Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS2 is P _s

SC3orSC4, BS2 = Ρ 01 ' 2,, Ρ ^ SC5orSC6, BS2 = Ρ 0 ,, ^ Ρ SC7orSC^, BS2 = Ρ ^ 012 Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS3 is P _s

SC3orSC4, BS3 = Ρ ^J 01 , 2,, Ρ ^ SC5orSC6, BS3 = Ρ ^J 01 , 2,, Ρ ^ SC7orSC^, BS3 = ρ ^ 0 In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, when BS1 In subframe SF3

After transmitting the reference signal by the first OFDM symbol of (Subframe3), the terminal MS1 measures the pilot reference signal P1 to obtain the channel matrix of the FP, and obtains the channel quality information of the FP by measuring the data reference signals SC1 to SC8, and feeds back the specific FP to the BS1. Channel quality information. Where the specific The FP may be notified by the base station to the terminal MS 1 or by the terminal MS 1 and up to the base station BS 1 , and the specific FP may include one or more FPs or all FPs. The base station BS 1 does not transmit data on the subcarriers on which the BS2 transmits the pilot reference signal P2, and the base station BS 1 does not transmit data on the subcarriers on which the BS3 transmits the pilot reference signal P3. The base station BS 1 may transmit data information or not transmit data information by using other available subcarriers on the symbol of the transmission reference signal. For the same reason, it applies to base stations BS2 and BS3. The base station BS 1 , BS 2 , and BS 3 may use the all available subcarriers of the first OFDM symbol of the subframe SF3 to transmit the reference signal. The seventh embodiment is described by taking multiple antennas as an example, and in this embodiment, The system is processed using the structure and data processing flow shown in Figure 9. In this embodiment, after the FFR is enabled, the base station sends a reference signal by using an OFDM symbol that transmits the intermediate pilot every N (N>=1) intermediate pilot transmission periods (ie, the symbol does not transmit the intermediate guide) The channel transmits the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the channel quality information of the measured FP to the base station, and the base station allocates resources to the terminal according to the received feedback information and the terminal related information already stored. The reference signal transmitted by the BS 1, the BS2, and the BS3 is a signal known by the terminal, and is transmitted by using the first OFDM symbol of the subframe SF3 (Subframe3). The following describes the transmission process of the reference signal by taking BS 1 as an example.

BS 1 first divides the modulated and encoded reference signal into L layers, and then sends the data of the L layers into the MIMOencoder to generate M _t streams, ϋ M _t streams are sent to the Precoder, and finally the reference signals are mapped to N. Send on _t antennas (Antenna). The precoder process is: after the M _t streams are sent into the Precoder, the base station selects a precoding matrix PM-a from a known precoding matrix set by using a Precoding Matrix Indication (PMI), and Multiply PM-a by M _t streams and map the result to N _t antennas (Antenna ) for transmission. The base station may be configured by default by the standard when selecting the precoding matrix PM-a, or may be randomly selected by the base station and notify the terminal of the PMI number of the selected PM-a. As shown in FIG. 14, the reference signal is _Nt (in this embodiment, N _t = 2 is assumed) antenna ( Antenna ) The specifically occupied subcarrier positions are transmitted on the subcarriers SC1 to SC16 of the black square in FIG. The transmission power of the BS1 transmit reference signal occupying the subcarrier needs to be configured according to the average subcarrier power of BS1 on FP1, FP2, FP3 and FP4. The transmission power of the subcarriers SC1 to SC4 in BS1 is to be referred to the average subcarrier transmission power P of FP1. That is, /^^:^ ;^, where P _s ― _sc denotes the transmit power of SC1, SC2, SC3, SC4, and A _1SS1 denotes the float coefficient of P _SC1 _ _SC4SS1 , that is, reflect the allowable ^ _{_SC4SS1} with respect to P. The size of the float. Similarly, the transmit power of the subcarriers SC5 to SC8 in BS1 should refer to the average subcarrier transmit power P of FP2. , that is, P _SC5 _ _SC = (1 ± Δ ₂ ^) Ρ. ;

假设都等于 0 , 则 ，The transmit power of subcarriers SC9 and SC12 in BS1 should refer to the average subcarrier transmit power of FP3 Ρο/2, that is, /^ ₉ _ ₁₂ =(l±A _3SS1 ) /2; the transmit power of subcarriers SC13 and SC16 in BS1 is Refer to the average subcarrier transmit power P of FP4. /2, ie P _SCT3 _ _SCT6 ^ = (1±A _4SS1 )P. 12. In this embodiment, A, A ₂ , A ₃ ,

Assuming that both are equal to 0, then,

―— ^J I 2 同样， 假设 BS3 中子载波 SC1-SC16 的发射功率为 ^π_^₄^₃ =尸。， SC5-^: , 3S\ — ^J 0 , SC9-^:\2,3S\ — ^J 0 , ^ , SC\3-SC\6,BS\ — ^J 0 Similarly, assuming subcarriers SC1-SC16 in BS2 Transmit power is PS _s C\-SC , BS2

―— ^J I 2 Similarly, assume that the transmit power of subcarriers SC1-SC16 in BS3 is ^π_^ ₄ ^ ₃ = corpse. ,

¹ Ρ SC5-SC^, BS3 = Ρ 0/ ¹ 2 ^ , , ¹ Ρ SC9-SC\2, BS3 = Ρ 0/ ¹ 2 ^ , , ¹ Ρ SC\3-SC\6, BS3 = ¹ Ρ 0 In this embodiment, it is assumed that the serving base station of the terminal MS1 is the BS1. After the BS1 transmits the reference signal in the fourth OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the channel quality information on the subcarriers SC1 to SC16 to the BS1. Feedback channel quality information of a specific FP. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. The base stations BS1, BS2, and BS3 transmit the reference signals by using the subcarriers SC1-SC16 of the first OFDM symbol of the subframe SF3, and may also transmit the data information by using other available subcarriers on the symbol; or, the base stations BS1, BS2, and BS3 When the reference signals are transmitted by the subcarriers SC1-SC16 of the first OFDM symbol of the subframe SF3, the other subcarriers on the symbol do not transmit the content; The base stations BS 1, BS2, BS3 can transmit reference signals using all available subcarriers of the first OFDM symbol of the subframe SF3. Embodiment 8 In this embodiment, a multi-antenna and an intermediate pilot transmission reference signal are taken as an example for description. Also, in the present embodiment, the system uses the structure and data processing flowchart shown in FIG. In this embodiment, after the FFR is enabled, the base station sends a reference signal by using an OFDM symbol that transmits the intermediate pilot every N (N>=1) intermediate pilot transmission periods (ie, the symbol does not transmit the intermediate guide) The channel transmits the reference signal for the terminal to measure the channel quality information of the FP, and the terminal feeds back the channel quality information of the measured FP to the base station, and the base station allocates resources to the terminal according to the received feedback information and the terminal related information already stored. The reference signal transmitted by BS 1, BS2, and BS3 is a signal known by the terminal, and is transmitted by using the first OFDM symbol of the subframe SF3 (Subframe3). The following describes the transmission process of the reference signal by taking BS 1 as an example.

BS 1 first divides the modulated and encoded reference signal into L layers, and then sends the data of the L layers into the MIMOencoder to generate M _t streams, ϋ M _t streams are sent to the Precoder, and finally the reference signals are mapped to N. Send on _t antennas (Antenna). The precoder process is: after the M _t streams are sent into the Precoder, the base station selects a precoding matrix PM-a from a known precoding matrix set by using a Precoding Matrix Indication (PMI), and Multiply PM-a by M _t streams and map the result to N _t antennas (Antenna ) for transmission. The base station may be configured by default by the standard when selecting the precoding matrix PM-a, or may be randomly selected by the base station and notify the terminal of the PMI number of the selected PM-a. The reference signal transmits a specifically occupied subcarrier position on the antenna (Antenna) in _Nt (in this embodiment, _Nt = 2), as shown in FIG. 15, wherein the reference signal includes a pilot reference signal and a data reference signal. Wherein P1-1 is the pilot reference signal of antenna 1 of BS 1, P1-2 is the pilot reference signal of antenna 2 of BS 1, and the pilot reference signal of BS 1, BS2 and BS3 is frequency division multiplexed. . The sub-carriers SC1 to SC16 of the black square are data reference signals. The transmission power of the BS 1 transmission data reference signal occupying the subcarrier needs to be configured according to the average subcarrier power of the BS 1 on FP1, FP2, FP3 and FP4. The transmit power of the subcarriers SC1 to SC4 in BS 1 should refer to FP1. Average subcarrier transmit power P. That is, " ₄ = (1 soil: ^, where, represents the transmission power of SC1, SC2, SC3, SC4, A _1SS1 represents the floating coefficient of P _SC1 _ _SC4SS1 , that is, reflects the floating size of the allowable ACTU relative to P.) The transmit power of the subcarriers SC5 to SC8 in BS1 should be referred to the average subcarrier transmit power P of FP2, that is, P _SC5 ― _sc = (1±Δ ₂ ^)Ρ;; the transmit power of subcarriers SC9 and SC12 in BS1 is Refer to FP3 for the average subcarrier transmit power Ρ ₀ /2, ie A _OT _sc ₁₂ =( ^{1± Δ} ₃ ). The transmit power of subcarriers SC13 and SC16 in BS1 should be referenced.

The average subcarrier transmit power of FP4 is Ρ. /2 , ie P _SCT3 _ _SCT6 ^ = (1 ± Δ _{4 SS1} )P. / 2. In this embodiment,

^Ι,β^ , , ^4,35Ί ^ ^^ ~f~ 〇, ^] ] Psc ' PsC5S

P。 。― ―— ^J ？, P — ―— ^J I 2 同样， 支设 BS3 中子载波 SC1-SC16 的发射功率为 Λ P 0 2, P _m — ■ P ^J 0 2 Similarly, it is assumed that the transmission power of subcarriers SC1-SC16 in BS2 is P _s

P. . ― ―— ^J ? , P — ― — ^J I 2 Similarly, the transmit power of subcarriers SC1-SC16 in BS3 is set to Λ

' P 012-, P = -P ^J 0 / , 2 ^, , P = - p ^J 0 In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and when BS1 is in the first OFDM of the subframe SF3 (Subframe3) After the symbol transmits the reference signal, the terminal MS1 measures the pilot reference signals P1-1, P1-2 to obtain the channel matrix of the FP, and obtains the channel quality information of the FP by measuring the data reference signals SC1 to SC16, and feeds back the channel quality of the specific FP to the BS1. information. The specific FP may be notified to the terminal MS1 by the base station or selected by the terminal MS1 and uploaded to the base station BS1. The specific FP may include one or more FPs or all FPs. The base station BS1 does not transmit data on the subcarriers on which the BS2 transmits the pilot reference signal P2, and the base station BS1 does not transmit data on the subcarriers on which the BS3 transmits the pilot reference signal P3. The base station BS1 may transmit or not transmit data information by using other available subcarriers on the symbol of the transmission reference signal. For the same reason, the same processing can be applied to the base stations BS2 and BS3. The base stations BS1, BS2, BS3 may transmit reference signals using all available subcarriers of the first OFDM symbol of the subframe SF3. Embodiment 9 In this embodiment, a single antenna is used, and a part of the intermediate pilots are used to transmit the reference signal as an example for description. In an 802.16m system, an intermediate pilot (Metaamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for performing channel measurement at the receiving end, for example, in the second to last subframe of the downlink subframe. The intermediate pilot is transmitted on the first OFDM symbol (subframe SF3 in this embodiment), and the transmission period of the intermediate pilot is one frame, and the transmission powers of all the subcarriers occupied by the intermediate pilot are the same. The intermediate pilot can be used to estimate the channel of all subcarrier positions on the entire symbol, which can facilitate the transmission end to use an efficient transmission strategy according to the current channel condition. In this embodiment, after the FFR is enabled, the base station sends a reference by using some frequency resources (ie, subcarriers) in the OFDM symbol that sends the intermediate pilot every N (N>=1) intermediate pilot transmission periods. The signal is used by the terminal to measure the channel quality information of the FP, and the terminal feeds back the channel quality information of the measured FP to the base station, and the base station allocates resources to the terminal according to the received feedback information and the terminal related information that has been stored. In this embodiment, the reference signal sent by BS1, BS2, and BS3 is a signal known by the terminal, and the reference signal is sent by using a part of subcarriers in the first OFDM symbol of the subframe SF3 (Subframe3) (the intermediate pilot is transmitted on the symbol). The subcarrier positions specifically occupied by the reference signal are as shown in black square subcarriers SC1 to SC8 in FIG. The transmission power of the BS1, BS2, and BS3 transmission reference signals occupying the subcarriers needs to be configured according to the average subcarrier powers of the corresponding base stations on FP1, FP2, FP3, and FP4. The transmit power of the subcarriers SC1 and SC2 in BS1 is referred to the average subcarrier transmit power FP of FP1. , ie Ρ« = (1 soil Δ )Ρ. , where Ρ „ denotes the transmit power of SC1 and SC2, Δ denotes /^ _{1 (} the floating coefficient of ^ ₂ , that is, the floating size of the allowable / ^.^ _SS1 relative to Ρο. Similarly, the subcarriers SC3 and SC4 in BS1 The transmit power should refer to the average subcarrier transmit power _{FP 0 of} FP2, that is, P _{s orSC} = G = A ₂ ^); the transmit power of subcarriers SC5 and SC6 in BS 1 should refer to the average subcarrier transmit power of FP3 P _Q / 2, that is, ^P sc orsce^sx = 0 ^Δ ₃ ) / 2; the transmission power of subcarriers SC7 and SC8 in BS 1 should refer to the average subcarrier transmit power of FP4 P./2, ie A _CT . ^ _SS1 =( l±A _4SS1 )P./2. In this embodiment,

'

¹ p SC5orSC6,BS\ = ^J P 0/ '2 , ^{, 1} P SC,orSC ,BS = ^J P 0/ ⁷ 2 ^ ° Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS2 is P _s !r?.

P = /? , Ρ =Ρ , ' Ρ =Ρ 12 Similarly, assume that the transmit power of subcarriers SC1-SC8 in BS3 is P _SCT . n _SS3 = , p = P 12, P = P 12, P = P Therefore, after the base stations BS1, BS2, BS3 transmit the reference signals using the subcarriers SC1-SC8, the terminal measures the channel quality information on SC1 to SC8, and feeds back the specific The channel quality information of the FP is sent to the base station. In this embodiment, it is assumed that the serving base station of the terminal MS1 is the BS1. After the BS1 transmits the intermediate pilot and the reference signal in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the intermediate pilot M1 to obtain the channel matrix of the FP. And obtaining channel quality information of the FP by measuring the reference signals SC1 to SC8, and feeding back the channel quality information of the specific FP to the BS1. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. Embodiment 10 This embodiment is described by taking multiple antennas and occupying part of intermediate pilots as an example. In an 802.16m system, an intermediate pilot (Metaamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for performing channel measurement at the receiving end, for example, in the second to last subframe of the downlink subframe. The intermediate pilot is transmitted on the first OFDM symbol (subframe SF3 in this embodiment), and the transmission period of the intermediate pilot is one frame, and the transmission power of all the subcarriers occupied by the intermediate pilot is the same. In an embodiment, after the FFR is enabled, the base station sends a reference signal by using some frequency resources (ie, subcarriers) in the OFDM symbol that sends the intermediate pilot every N (N>=1) intermediate pilot transmission periods. For the terminal to measure the channel quality information of the FP, the terminal feeds back the measured channel quality information of the FP to the base station, and the base station allocates resources to the terminal according to the received feedback information and the terminal related information already stored. In this embodiment, the system uses the structure and data processing flow shown in FIG. Wherein, the reference signals transmitted by BS1, BS2, and BS3 are signals known by the terminal, and the user is utilized. Part of the subcarrier transmission in the first OFDM symbol of the frame SF3 (Subframe3) used to transmit the intermediate pilot. The following describes the transmission process of the reference signal by taking BS1 as an example.

= (1±A_2SS1)P。； BS1 中 子载波 SC9和 SC12的发射功率要参考 FP3的平均子载波发射功率 P。/2, 即

BS1 中子载波 SC13 和 SC16的发射功率要参考 BS1 first divides the modulated and encoded reference signal into L layers, and then sends the data of the L layers into the MIMOencoder to generate M _t streams, ϋ M _t streams are sent into the Precoder, and finally the reference signals are mapped to N _t Send on the antenna (Antenna). The precoder process is: after the M _t streams are sent into the Precoder, the base station selects a precoding matrix PM-a from a known precoding matrix set by using a Precoding Matrix Indication (PMI), and Multiply PM-a by M _t Streams and map the result to N _t antennas (Antenna) for transmission. The base station may be configured by default by the standard when selecting the precoding matrix PM-a, or may be randomly selected by the base station and notify the terminal of the PMI number of the selected PM-a. The reference signal transmits the specifically occupied subcarrier position on the antenna (Antenna) in _Nt (in this embodiment, _Nt = 2), as shown in FIG. 17, where M1-1 is the intermediate pilot of antenna 1 of BS1, M1-2 is the intermediate pilot of antenna 2 of BS1, and the intermediate pilots of BS1, BS2 and BS3 are frequency division multiplexed. The sub-carriers SC1 to SC16 of the black square are reference signals. The transmission power of the BS1 transmission reference signal occupying the subcarrier needs to be configured according to the average subcarrier power of BS1 on FP1, FP2, FP3 and FP4. The transmission power of the subcarriers SC1 to SC4 in BS1 is to be referred to the average subcarrier transmission power P of FP1. , ie P« ₄ ^ = (l soil Δ^)Ρ. Where, represents the transmit power of SC1, SC2, SC3, SC4, and A _1SS1 represents the floating coefficient of / ^ _CT _ _SC4SS1 , that is, the reflection is allowed relative to P. The size of the float. Similarly, the transmission power of the subcarriers SC5 to SC8 in BS 1 should refer to the average subcarrier transmission power P of FP2. , which is

= (1±A _2SS1 )P. The transmit power of the subcarriers SC9 and SC12 in BS1 should refer to the average subcarrier transmit power P of FP3. /2, ie

The transmit power of subcarriers SC13 and SC16 in BS1 should be referred to

The average subcarrier transmit power of FP4 is Ρ. /2 , ie P _SCT3 _ _SCT6 ^ = (1 ± Δ _{4 SS1} )P. / 2. In this embodiment,

^Ι,β^ Ίβ3\, , , 0, J3⁄4'J p =P /2, P =P 12 Similarly, assume that the transmit power of subcarriers SC1-SC16 in BS2 is PS _s C\-SC , BS2 p =P /2, P =p , p =P /2 Similarly, the transmission of subcarriers SC1-SC16 in BS3 is supported. The power is Λ SC\-SC , BS3 p ¹ SC5-SC^, BS3 = ^J P 0/ ⁷ 2 ^, ' ¹ P SC9-SC\2, BS3 = ^J P 0/ ⁷ 2 ^, ' ¹ P SC\ 3-SC\6, BS3 = ¹ P 0 In this embodiment, it is assumed that the serving base station of the terminal MSI is BS1, and after the BS1 transmits the intermediate pilot and reference signals in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal The MS1 measures the intermediate pilots M1-1, M1-2 to obtain the channel matrix of the FP, and obtains the channel quality information of the FP by measuring the reference signals SC1 to SC16, and feeds back the channel quality information of the specific FP to the BS1. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. Embodiment 11 This embodiment is described by taking a single antenna and expressing the power difference by the intermediate pilot as an example. In an 802.16m system, an intermediate pilot (Mineamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for channel measurement at the receiving end. For example, in this embodiment, the intermediate pilot is located on the first OFDM symbol of the second last subframe of the downlink subframe (subframe SF3) and transmits the intermediate pilot. In this embodiment, the transmission period of the intermediate pilot is one frame. When the FFR is enabled, the transmit power of the subcarrier occupied by the base station in the intermediate pilot needs to be set according to the average subcarrier power of the base station on FP1, FP2, FP3, and FP4. In this embodiment, BS1, BS2, and BS3 use the first OFDM symbol of the subframe SF3 (Subframe3) to transmit the intermediate pilot in the manner of Reuse3, and the subcarrier position occupied by the intermediate pilot is as shown in FIG. Shown. The transmit power of subcarriers M1-1 and M1-2 in BS1 should be referred to

The average subcarrier transmit power P of FP1. , ie Ρ _Μ ^ _Μ1 _ ₂ = (l ± _BSL )P ₀ , where PMH _ ₂ represents the transmission power of M1-1 and M1-2, indicating the floating coefficient of ^^^^, that is, reflecting the allowable ^w^ ^ Relative to P. The size of the float. Similarly, BS1 transmit power and subcarrier M1-3 Ml- ⁴ subcarriers to the reference average transmission power of P. FP2 , ie Ρ _Μ1 _ ₃ . _Μ1 _ ₄ ^ = (1 ± Δ ₂ ) Ρ. ;

The transmit power of subcarriers M1-5 and M1-6 in BS1 should refer to the average subcarrier transmit power of FP3. Po/2, ie ^—^ soil) / ³ . The transmit power of the subcarriers M1-7 and M1-8 in BS1 should refer to the average subcarrier transmit power P of FP4. /2, ie Ρ ₁ _ ₇ . _Μ1 _, =(l±A _4SS1 )P. /2. In this embodiment, Δ ₂ , A _3SS1 , and A _4SS1 are all assumed to be equal to 0, then Ρ _{Μ TM_ 2} = Ρ. , ρ = ρ , ρ = Ρ 12, Ρ = Ρ 1 ¹ 2. Similarly, assuming the transmission power of subcarriers BS2 M2-1 to M2-8 is _{Ρ λ p = /?, Ρ} = Ρ, 'Ρ = Ρ 12 Similarly, assuming subcarriers M3-1 BS3 transmit to the Μ3-8 The power is P _M3 _ _1OTM3 _ ₂ , _SS3 = P ₀ , ρ = Ρ 12, Ρ = Ρ 12 , Ρ = ρ Therefore, the terminal measures the channel quality information on the FP through the intermediate pilot, and feeds back the channel quality information of the specific FP. To the base station. In this embodiment, it is assumed that the serving base station of the terminal MS1 is the BS1, and after the BS1 transmits the intermediate pilot in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the intermediate pilots M1-1 to M1-8 to obtain the FP1. The channel quality information of the FP2, the FP3, and the FP4 feeds back the channel quality information of the specific FP to the BS1. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 to select and uplink the base station BS1, and the specific FP may include one or more FPs or all FPs. It should be noted that the transmission position of the intermediate pilot is not limited to the first OFDM symbol of the subframe SF3 selected in this embodiment, and may be located in other symbols, or may be located in other downlink subframes, or may be located in multiple downlink subframes. Within OFDM symbols. The transmission period of the intermediate pilot is not limited to one frame in this embodiment, and may be multiple frames or multiple subframes or multiple superframes. Embodiment 12 This embodiment is described by taking a single antenna and expressing the power difference by the intermediate pilot as an example. In an 802.16m system, an intermediate pilot (Mineamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for channel measurement at the receiving end. For example, in this embodiment, the intermediate pilot is located in the first OFDM symbol of the second last subframe of the downlink subframe (subframe SF3) The intermediate pilot is sent on the number. In this embodiment, the transmission period of the intermediate pilot is one frame. In this embodiment, after the FFR is enabled, the transmit power of the subcarriers occupied by the base station in the intermediate pilot needs to be configured according to the average subcarrier power of the base stations on FP1, FP2, FP3, and FP4. In this embodiment, BS1, BS2, and BS3 use the first OFDM symbol of the subframe SF3 (Subframe3) to transmit the intermediate pilot in the manner of Reusel, and the subcarrier position occupied by the intermediate pilot is as shown in FIG. Shown. The transmit power of subcarriers M1-1 and M1-2 in BS1 should be referred to

The average subcarrier transmit power P of FP1. , ie Ρ ₁ _ _1σΜ1 _ ₂ ^ = (1 soil Δ ; ^, where, representing the emission power of M1-1 and M1-2, indicating the floating coefficient of ^^^^, that is, reflecting the allowable ^w^^ relative to P . the float size. Likewise, BSl transmit power and subcarrier M1-3 Ml- ⁴ subcarriers to the reference average transmission power P. FP2, i.e. _{Ρ Μ1 _ 3. Μ1 _ 4} ^ = (1 ± Δ 2 )Ρ.;

l-2, 2-1, W2_2,aSl表 示 Ml-1、 Ml-2, M2-l、 M2-2的发射功率， Δ 表示 _M1_₂、 _M2_,、 _M2_₂ 的 浮动系数， 即反映允许 ^^^^^^相对于？^ 浮动大小。 同理， BS 1 中子载波 Ml-3、 Ml-4、 M2-3、 M2-4的发射功率要参考 FP2的平均子载波 发射功率 P。， 即 ^^^—^^ ^土 ；^; BS1 中子载波 Ml-5、 Ml-6、 M2-5、 M2-6的发射功率要参考 FP3的平均子载波发射功率 P。/2, 即

2； BS1 中子载波 Ml-7、 Ml-8、 M2-7、The transmission power of the subcarriers M1-5 and M1-6 in BS1 should refer to the average subcarrier transmission power Po/2 of FP3, that is, ^^^ soil)/ ³ . The transmit power of the subcarriers M1-7 and M1-8 in BS1 should refer to the average subcarrier transmit power P of FP4. /2, ie Ρ ₁ _ ₇ . _Μ1 _, =(l±A _4SS1 )P. /2. In this embodiment, Δ ₂ , A _3SS1 , and A _4SS1 are all assumed to be equal to 0, then Ρ _{Μ TM_ 2} = Ρ. ρ =ρ , ρ =Ρ 12, Ρ =Ρ 12 Similarly, it is assumed that the transmission power of subcarriers M2-1 to M2-8 in BS2 is P _{M2 rM2} — _{2 }S2} = P ₀ p = /? , Ρ =Ρ , ' Ρ =Ρ 1 '2厶 Similarly, assume that the transmit power of subcarriers M3-1 to M3-8 in BS3 is P _M3 _ _1OTM3 _ ₂ , _SS3 = P ₀ p = P 12, P = P 12 , P = Therefore, the terminal measures the channel quality information on the FP through the intermediate pilot, and feeds back the channel quality information of the specific FP to the base station. In this embodiment, it is assumed that the serving base station of the terminal MS1 is the BS1, and after the BS1 transmits the intermediate pilot in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the intermediate pilots M1-1 to M1-8 to obtain the FP1. , FP2, FP3, FP4 channel quality information, feedback to BS1 Channel quality information for a particular FP. The specific FP may be notified by the base station to the terminal MS 1 or by the terminal MS 1 and may be connected to the base station BS 1 , and the specific FP may include one or more FPs or all FPs. The transmission position of the intermediate pilot is not limited to the first OFDM symbol of the subframe SF3 selected in this embodiment, but may be located in other symbols, or may be located in other downlink subframes, or may be located in multiple OFDM symbols. The transmission period of the intermediate pilot is not limited to one frame in this embodiment, and may be multiple frames or multiple subframes or multiple superframes. Embodiment 13 This embodiment is described by taking a multi-antenna and a power difference reflected by an intermediate pilot as an example. In an 802.16m system, an intermediate pilot (Mineamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for channel measurement at the receiving end. For example, in this embodiment, the intermediate pilot is located on the first OFDM symbol of the second last subframe of the downlink subframe (subframe SF3) and transmits the intermediate pilot. In this embodiment, the transmission period of the intermediate pilot is one frame. In this embodiment, the system uses the structure and data processing flow shown in FIG. In this embodiment, after the FFR is enabled, the transmit power of the subcarriers occupied by the base station in the intermediate pilot needs to be configured according to the average subcarrier power of the base stations on FP1, FP2, FP3, and FP4. In this embodiment, BS 1, BS2, and BS3 transmit the intermediate pilot using the first OFDM symbol of the subframe SF3 (Subframe3) in the manner of Reuse3. The method of the Reuse3 is that the subcarriers occupied by the intermediate pilots transmitted by the BS 1, the BS2, and the BS3 are orthogonal in frequency. The subcarriers occupied by each base station transmitting intermediate pilots on multiple transmit antennas are orthogonal in frequency. The following takes BS 1 as an example to describe in detail the method and method of transmitting the intermediate pilot. In this embodiment, it is assumed that BS 1 transmits intermediate pilots on N _t (N _t =2 ) antennas (Antenna ), and the specific carrier positions occupied by the pilots are as shown in black square subcarriers in FIG. 20 . The transmit power of the subcarriers M1-1, Ml-2, M2-l, and M2-2 in BS 1 should be referred to the average subcarrier transmit power Ρθ of FP1.

L-2, 2-1, W2_2, aSl represent the transmission power of Ml-1, Ml-2, M2-l, M2-2, and Δ represents the floating coefficient of _M1 _ ₂ , _M2 _, and _M2 _ ₂ , that is, reflect Allow ^^^^^^ relative to? ^ Floating size. Similarly, the transmit power of the subcarriers M1-3, Ml-4, M2-3, and M2-4 in BS 1 should refer to the average subcarrier of FP2. Transmit power P. That is, ^^^—^^^ soil; ^; The transmission power of the subcarriers M1-5, Ml-6, M2-5, and M2-6 in BS1 should refer to the average subcarrier transmission power P of FP3. /2, ie

2; BS1 medium subcarriers Ml-7, Ml-8, M2-7,

H 0 ' -^'J The transmit power of M2-8 should refer to the average subcarrier transmit power of FP4. /2, ie

H 0 '-^'J

p ¹ M\-5, Ml_6, M2-5, M2-6, BS\ = ^J P 0/ ⁷ 2 ^, ' ¹ PM\-7, Ml_8, M2-7, 2-8 = ^J P 0/ ⁷ 2 ^ ° Therefore, the terminal measures the channel quality information on the FP through the intermediate pilot, and feeds back the channel quality information of the specific FP to the base station. In this embodiment, it is assumed that the serving base station of the terminal MS1 is the BS1. After the BS1 transmits the intermediate pilot in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the intermediate pilot to obtain the FP1, FP2, FP3, and FP4. The channel quality information is fed back to BS1 for channel quality information of a specific FP. The specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 and may be connected to the base station BS1. The specific FP may include one or more FPs or all FPs. The transmission position of the intermediate pilot is not limited to the first OFDM symbol of the subframe SF3 selected in this embodiment, but may be located in other symbols, or may be located in other downlink subframes, or may be located in multiple OFDM symbols. The transmission period of the intermediate pilot is not limited to one frame in this embodiment, and may be multiple frames or multiple subframes or multiple superframes. Embodiment 14 This embodiment is described by taking a multi-antenna and the power difference reflected by the intermediate pilot as an example.

l-2, 2-1, W2_2,aSl表 示 Ml-1、 Ml-2, M2-l、 M2-2的发射功率， Δ 表示 _M1_₂、 _M2_,、 _M2_₂ 的 浮动系数， 即反映允许 ^^^^^^相对于？^ 浮动大小。 同理， BS1 中子载波 Ml-3、 Ml-4、 M2-3、 M2-4的发射功率要参考 FP2的平均子载波 发射功率 P。， 即 ^^^—^^ ^土 ；^; BS1 中子载波 Ml-5、 In an 802.16m system, an intermediate pilot (Mineamble) refers to transmitting a specific pilot sequence on a specific symbol in a frame for channel measurement at the receiving end. For example, in this embodiment, the intermediate pilot is located on the first OFDM symbol of the second last subframe of the downlink subframe (subframe SF3) and transmits the intermediate pilot. In this embodiment, the transmission period of the intermediate pilot is one frame. In this embodiment, the system uses the structure and data processing flow shown in FIG. In this embodiment, after the FFR is enabled, the transmit power of the subcarriers occupied by the base station in the intermediate pilot needs to be configured according to the average subcarrier power of the base stations on FP1, FP2, FP3, and FP4. In this embodiment, BS1, BS2, and BS3 transmit the intermediate pilot by using the first OFDM symbol of the subframe SF3 (Subframe3) in the manner of Reuse 1. The mode of the Reuse 1 is that the subcarriers occupied by the intermediate pilots of the BS 1, the BS2, and the BS3 are the same. The following describes the transmitting method and receiving method of the intermediate pilot in detail by taking BS1 as an example. In this embodiment, it is assumed that BS1 transmits intermediate pilots on N _t (N _t = 2) antennas (Antenna), and the subcarrier positions occupied by the pilots are as shown in black square subcarriers in FIG. 21 . The transmit power of the subcarriers Ml-1, Ml-2, M2-l, and M2-2 in BS1 should refer to the average subcarrier transmit power Ρθ of FP1.

L-2, 2-1, W2_2, aSl represent the transmission power of Ml-1, Ml-2, M2-l, M2-2, and Δ represents the floating coefficient of _M1 _ ₂ , _M2 _, and _M2 _ ₂ , that is, reflect Allow ^^^^^^ relative to? ^ Floating size. Similarly, the transmit power of the subcarriers M1-3, Ml-4, M2-3, and M2-4 in BS1 should refer to the average subcarrier transmit power P of FP2. , ie ^^^—^^ ^ soil; ^; subcarrier Ml-5 in BS1,

2； BS1 中子载波 Ml-7、 Ml-8、 M2-7、The transmission power of Ml-6, M2-5, and M2-6 should refer to the average subcarrier transmission power P of FP3. /2, ie

2; BS1 medium subcarriers Ml-7, Ml-8, M2-7,

H i又都等于 0， 则 Ρ_Μ _ ^ l-2, 2 M 2-2, BS\ - ， l-4, M2-3 M2-4,BS\ - ，

l-8, M2-7 2-8 = ¹P 0/ ^F2 " 因此， 终端通过中间导频测量 FP上的信道质量信息， 并反馈特定 FP的 信道质量信息给基站。 本实施例中， 假设终端 MS1 的服务基站是 BS1, 当 BS1 在子帧 SF3 ( Subframe3 )的第 1个 OFDM符号发送中间导频后， 终端 MS1测量中间导 频获得 FP1、 FP2、 FP3、 FP4的信道质量信息， 向 BS1反馈特定 FP的信道 质量信息。 其中， 所述特定 FP可以由基站通过信令通知终端 MS1或者由终 端 MS1选择并上 4艮基站 BS1, 所述特定 FP可以包括一个或多个 FP或全部 FP。 中间导频的发送位置并不仅限于本实施例中选取的子帧 SF3 的第 1 个 OFDM符号， 也可以位于其他符号内， 也可以位于其他下行子帧内， 也可以 位于多个 OFDM符号内。 中间导频的发送周期不仅限于本实施例中的 1帧， 也可以是多个帧或多个子帧或多个超帧。 在下面实施例中对上述方法二进行说明。 在以下的实施例中， 假设系统 内存在三个基站分别为 BS 1、 BS2和 BS3。 当 FFR使能后， 基站 BS 1、 BS2 和 BS3分别在特定的 OFDM符号内的全部或部分 FP上不发送任何信息， 以 供终端测量全部或部分 FP的信道质量信息。 其中， BS 1、 BS2和 BS3在相 同 FP上不发送信息所占用的 OFDM符号不相同。 其中， 特定的 OFDM符号 可以是标准默认配置的或基站通过协商确定的。 实施例十五 本实施例中对上述方法二进行说明， 在本实施例中， 各个基站在相同的 频率分区上不发送信息所占用的 OFDM符合不相同，且对于频率分区集合中 的所有频率分区均进行测量。 下面以 BS 1为例详细描述终端测量 FP的信道质量信息的方法。 本实施例中， 假设终端 MS 1的服务基站是 BS 1 , 当 FFR使能后， 基站 BS 1需要终端上 4艮 FP1、 FP2、 FP3和 FP4的信道质量信息。 BS 1在第 L个 超帧的第 1个帧的第 2个下行子帧的第 3个 OFDM符号内 FP1对应的子载 波上不发送任何信息， BS 1在第 L个超帧的第 2个帧的第 2个下行子帧的第 3个 OFDM符号内 FP2对应的子载波上不发送任何信息， BS 1在第 L个超帧 的第 3个帧的第 2个下行子帧的第 3个 OFDM符号内 FP3对应的子载波上 不发送任何信息， BS 1在第 L个超帧的第 4个帧的第 2个下行子帧的第 3个 OFDM符号内 FP4对应的子载波上不发送任何信息。 The transmit power of M2-8 should refer to the average subcarrier transmit power of FP4. /2, ie

H i is equal to 0, then Ρ _Μ _ ^ l-2, 2 M 2-2, BS\ - , l-4, M2-3 M2-4, BS\ - ,

L-8, M2-7 2-8 = ¹ P 0/ ^F 2 " Therefore, the terminal measures the channel quality information on the FP through the intermediate pilot, and feeds back the channel quality information of the specific FP to the base station. In this embodiment, the hypothesis The serving base station of the terminal MS1 is BS1. After the BS1 transmits the intermediate pilot in the first OFDM symbol of the subframe SF3 (Subframe3), the terminal MS1 measures the channel quality information of the intermediate pilots to obtain FP1, FP2, FP3, and FP4, to the BS1. Transmitting channel quality information of a specific FP, where the specific FP may be notified by the base station to the terminal MS1 or by the terminal MS1 to select and uplink the base station BS1, where the specific FP may include one or more FPs or all FP. The transmission position of the intermediate pilot is not limited to the first OFDM symbol of the subframe SF3 selected in this embodiment, but may be located in other symbols, or may be located in other downlink subframes, or may be located in multiple OFDM symbols. The transmission period of the intermediate pilot is not limited to one frame in this embodiment, and may be multiple frames or multiple subframes or multiple superframes. The above method two will be described in the following embodiments. In the following embodiments, it is assumed that there are three base stations in the system, namely BS 1, BS 2 and BS 3. When the FFR is enabled, the base stations BS 1, BS2, and BS3 do not transmit any information on all or part of the FPs within a specific OFDM symbol, respectively, for the terminal to measure channel quality information of all or part of the FP. The OFDM symbols occupied by BS 1, BS 2, and BS 3 that do not transmit information on the same FP are different. The specific OFDM symbol may be a standard default configuration or the base station determines through negotiation. Embodiment 15 In the embodiment, the foregoing method 2 is described. In this embodiment, the OFDM occupied by each base station not transmitting information on the same frequency partition is different, and all frequency partitions in the frequency partition set are used. All measurements were made. The following describes the method for measuring the channel quality information of the FP by using the BS 1 as an example. In this embodiment, it is assumed that the serving base station of the terminal MS 1 is the BS 1. After the FFR is enabled, the base station BS 1 needs channel quality information of the terminals FP1, FP2, FP3, and FP4. BS 1 does not transmit any information on the subcarrier corresponding to FP1 in the third OFDM symbol of the second downlink subframe of the first frame of the Lth superframe, and BS 1 is in the second of the Lth superframe. No information is transmitted on the subcarrier corresponding to FP2 in the third OFDM symbol of the second downlink subframe of the frame, and BS 1 is the third in the second downlink subframe of the third frame of the Lth superframe. No information is transmitted on the subcarrier corresponding to FP3 in the OFDM symbol, and BS 1 does not transmit any subcarriers corresponding to FP4 in the 3rd OFDM symbol of the 2nd downlink subframe of the 4th frame of the Lth superframe. information.

The terminal MS 1 is further divided into FP1, FP2, FP3 and FP4 on the OFDM symbol; the amount of interference strength values from other base stations (BS2 and BS3) is measured, and the obtained interference intensity value is reported to the serving base station BS. 1. Similar processing as described above can be employed for BS2 and BS3. Embodiment 10 Γ In the embodiment, the foregoing method 2 is described. In this embodiment, the OFDM occupied by each base station not transmitting information on the same frequency partition is different, and for some frequencies in the frequency partition set. The partition is measured. The following describes the method for measuring the channel quality information of the FP by using the BS 1 as an example. In this embodiment, it is assumed that the serving base station of the terminal MS 1 is the BS 1. After the FFR is enabled, the base station BS 1 needs channel quality information of the terminals FP1 and FP2. Then, BS 1 does not transmit any information on the subcarrier corresponding to FP1 in the third OFDM symbol of the second downlink subframe of the first frame of the Lth superframe, and BS 1 is in the second of the Lth superframe. No information is transmitted on the subcarriers corresponding to FP2 in the 3rd OFDM symbol of the 2nd downlink subframe of the frame. The terminal MS 1 measures the interference strength values from the other base stations (BS2 and BS3) on FP1, FP2 at the OFDM symbol time, and reports the obtained interference strength value to the serving base station BS1. Embodiment 17 The foregoing method 2 is described in this embodiment. In this embodiment, the OFDM occupied by each base station not transmitting information on the same frequency partition conforms to the same, and all frequency partitions in the frequency partition set are all the same. Make measurements. The following describes the method for measuring the channel quality information of the FP by using the BS 1 as an example. In this embodiment, it is assumed that the serving base station of the terminal MS 1 is the BS 1. After the FFR is enabled, the base station BS 1 needs channel quality information of the terminals FP1, FP2, FP3, and FP4. BS 1 does not transmit any information in the third OFDM symbol of the second downlink subframe of the first frame of the Lth superframe. In the terminal MS 1 OFDM symbol Day ¹ J in the other points FP1, FP2, FP3 and FP4 ;; intensity value is the amount of one thousand interference from other base stations (BS2 and BS3), and reported to the base station serving one thousand intensity values obtained scramble BS 1. Embodiment 18 In the embodiment, the foregoing method 2 is described. In this embodiment, the OFDM occupied by each base station not transmitting information on the same frequency partition is different, and part of the frequency partition in the frequency partition set is used. Make measurements. The following describes the method for measuring the channel quality information of the FP by using the BS1 as an example. In this embodiment, it is assumed that the serving base station of the terminal MS 1 is the BS1. After the FFR is enabled, the base station BS1 needs the channel quality information of the terminals FP1 and FP2. Then, BS1 does not transmit any information on the subcarriers corresponding to FP1 and FP2 in the third OFDM symbol of the second downlink subframe of the first frame of the Lth superframe. The terminal MS1 measures the interference strength values from the other base stations (BS2 and BS3) on the FP1, FP2 at the OFDM symbol time, and reports the obtained interference strength value to the serving base station BS1. The following method will be described in the following embodiment. Embodiment 19 In this embodiment, the transmission power configuration information of all FPs in the frequency partition set is signaled. The method of transmitting and receiving the signaling is described in detail below by taking BS1 as an example. In this embodiment, it is assumed that the transmission power of the subcarrier of BS1 on FP1 is PI, the transmission power of the subcarrier of BS1 on FP2 is P2, the transmission power of the subcarrier of BS1 on FP3 is P3, and the transmission power of BS1 on FP4 is The transmit power of the subcarrier is P4. Then, the absolute value information of BS1^1^P1 P2, P3, and P4 is sent to the terminal MS1 through the signaling S1.

The MSI receives the signaling SI transmitted by the base station BS1, and obtains the subcarrier transmission powers P1, P2, P3, and P4 of FP1, FP2, FP3, and FP4 by decoding the SI. It should be noted that the manner in which the BS1 sends P1, P2, P3, and P4 is not limited to the absolute value mode described in this embodiment, and may also be sent by using a difference, that is, from FP1, FP2, and FP3. The subcarrier transmit power Px of P1, P2, P3, and P4 of FP4 is selected, and Px釆 is transmitted in an absolute value manner, and the subcarrier transmit power of other FPs is transmitted in a difference manner with Px. For example, BS1 selects a frequency reuse factor of subcarrier transmission power P2 of FP2 in the FP set of Reusel/3, and transmits it in an absolute value manner, and P1, P3, and P4 are transmitted in a difference manner. At the receiving end, MS1 first recovers P2 by decoding, and then recovers P1, P3, and P4. Embodiment 20 In this embodiment, the transmission power configuration of a part of the FP in the frequency partition set is used for signaling Information. The method of transmitting and receiving the signaling is described in detail below by taking BS1 as an example. In this embodiment, it is assumed that the transmission power of the subcarrier of BS1 on FP1 is PI, the transmission power of the subcarrier of BS1 on FP2 is P2, the transmission power of the subcarrier of BS1 on FP3 is P3, and the transmission power of BS1 on FP4 is The transmit power of the subcarrier is P4. The transmit power P1 of the subcarriers on the FP1 is stored in the base station and the terminal as a standard default configuration (here, not limited to the transmit power P1 of the subcarriers of the FP1, but also the transmit power of the subcarriers of the other one or more FPs), The absolute value information of M BS1 P2, P3, P4 is transmitted to the terminal MS1 via the signaling S1.

The MSI receives the signaling S1 sent by the base station BS1, and obtains the subcarrier transmission powers P2, P3, and P4 of the FP2.FP3 and FP4 by decoding S1. It should be noted that the manner in which the BS1 sends P2, P3, and P4 is not limited to the absolute value mode described in this embodiment, and may also be sent by using a difference, that is, subcarriers from FP2, FP3, and FP4. The subcarrier transmit power Px of one of the transmit powers P2, P3, and P4 is selected, and the Px is transmitted in an absolute value manner, and the subcarrier transmit power of the other FPs is transmitted in a difference manner from the Px. For example, BS1 selects the frequency reuse factor as the subcarrier transmit power P2 of FP2 in the FP set of Reusel/3, and transmits it in absolute value, and P3 and P4 are transmitted in difference mode. At the receiving end, MS1 first recovers P2 by decoding, and then recovers P3 and P4. It should be noted that the manner in which the BS1 sends P2, P3, and P4 is not limited to the absolute value mode described in this embodiment, and may also be sent by using another difference manner, that is, FP2, FP3, and FP4. The subcarrier transmit powers P2, P3, and P4 are transmitted using the difference from the PI. At the receiving end, MS1 learns the subcarrier transmit power P1 of FP1 in the standard default configuration, and then recovers P2, P3, and P4 through decoding. Embodiment 21 In this embodiment, by using the correspondence between the identification information (SegmentID) of the sector and the transmission power configuration information, the terminal is notified of the transmission power configuration information of all FPs in the frequency partition set. The method for obtaining the subcarrier transmit power of each FP is described in detail below by taking BS1 as an example. In this embodiment, it is assumed that the MS1 is the terminal of the serving base station, and the MS1 obtains the bandwidth configuration information of the BS1 by decoding the primary primary preamble (PA-Preamble) sent by the BS1. Assume that the bandwidth used by BS1 is 10 MHz. The MSI decodes the SA-Preamble (Secondary Advanced Preamble) sent by the BS1, and learns that the SA-Preamble sequence sent by the BS1 is SAP-1. The MSI finds the SegmentID corresponding to the sequence SAP-1 in the correspondence between the SA-Preamble sequence set and the SegmentID that can be used in the standard default configuration of the 10 MHz bandwidth, and is assumed to be Segment 1, that is, the SegmentID of BS1 is Segment 1. Finally, the terminal MS1 finds the transmission power configuration of the FP of the BS1 through the Segment 1 according to the correspondence between the SegmentID and the transmission power of the FP. Embodiment 22 In this embodiment, the UE transmits the transmit power configuration information of all FPs in the frequency partition set to the terminal by using the correspondence between the SA-Pr index number and the transmit power configuration information. The method for obtaining the subcarrier transmit power of each FP is described in detail below by taking BS1 as an example. In this embodiment, it is assumed that the MS1 is the terminal of the serving base station, and the MS1 obtains the bandwidth configuration information of the BS1 by decoding the PA-Preamble (Primary Advanced Preamble) sent by the BS1. In this embodiment, the bandwidth used by the BS1 is set. It is 10MHz. The MSI decodes the S A-Preamble (Second Advanced Preamble) sent by the BS1, and learns that the SA-Preamble sequence sent by the BS1 is SAP-1. MS1 finds the index number of the sequence SAP-1 in the SA-Preamble sequence set that can be used by the standard, default configured 10MHz bandwidth, assuming Index-1. Finally, the terminal MS 1 finds the transmission power configuration of the FP of the BS1 by using the index number Index-1 according to the correspondence between the SA-Preamble sequence set that can be used in the 10 MHz bandwidth and the transmission power of the FP. Embodiment 23 In this embodiment, the terminal is notified of the transmit power configuration information of all FPs in the frequency partition set by using the correspondence between the IDCell sequence number and the transmit power configuration information. The method for obtaining the subcarrier transmit power of each FP is described in detail below by taking BS1 as an example. In this embodiment, it is assumed that the MS1 is the terminal of the serving base station, and the MS1 obtains the bandwidth configuration information of the BS1 by decoding the PA-Preamble (Primary Advanced Preamble) sent by the BS1. In this embodiment, the bandwidth used by the BS1 is set. It is 10MHz. The MSI decodes the S A-Preamble (Second Advanced Preamble) sent by the BS1, and learns that the SA-Preamble sequence sent by the BS1 is SAP-1. MS1 finds the index number of the sequence SAP-1 in the standard, default configuration of the 10 MHz bandwidth available SA-Preamble sequence set, assuming Index-1. The corresponding set of SA-Preamble sequence sets and SegmentID that the MSI can use in the 10MHz bandwidth of the standard default configuration. In the system, the SegmentID corresponding to the sequence SAP-1 is found, and i is set to Segment 1, that is, the SegmentID of BS 1 is Segment 1. The MS I obtains the IDCell of BS 1 by calculation according to Segment 1 and Index-1. The MS I finds the FP power configuration information corresponding to the IDCell of the BS 1 according to the correspondence between the IDCell and the FP power configuration of the base station, and further obtains the power configuration information of the FP of the BS 1. Finally, the terminal MS 1 finds the transmission power configuration of the FP of the BS 1 through the index number Index-1 according to the correspondence between the SA-Preamble sequence set that can be used in the 10 MHz bandwidth and the transmission power of the FP. Embodiment 24 In this embodiment, the index information of the transmit power configuration of all FPs in the frequency partition set is signaled, and the transmit power configuration information of one or more frequency partitions is indicated by the index information in the frequency partition. The location in the transmit power configuration index table. The index table is stored in the base station and the terminal as a standard configuration. The method of transmitting and receiving the signaling will be described in detail below by taking BS 1 as an example. In this embodiment, the transmit powers of the subcarriers on the FP1, FP2, FP3, and FP4 of the BS1 are P1, P2, P3, and P4, respectively. The BS 1 finds the index information corresponding to the FP transmit powers of P1, P2, P3, and P4 under the premise of 4 FPs by looking up the transmit power configuration index table of the frequency partition of the standard configuration. Then, the BS 1 transmits the index information to the terminal MS 1 through the signaling S 1 .

The MS I receives the signaling S 1 sent by the base station BS 1 , obtains the above index information by decoding S 1 , and finds the transmit power P1, P2, P3 of the frequency partition corresponding to the index information by searching the transmit power configuration index table of the frequency partition. And P4. As described above, with the technical solution provided by the embodiment of the present invention, the base station sends the reference signal on each FP through the downlink channel according to the transmit power of each FP, so that the terminal measures the channel quality information of each frequency partition by using the reference signal, thereby improving The accuracy of the channel quality information measured on the terminal. In addition, in the embodiment of the present invention, the serving base station of the terminal may not send any information on the predetermined time-frequency resource, so that the terminal only receives signals from other base stations except the serving base station on the time-frequency resource, so that Accurately measure the intensity of the 4th in the time-frequency resource. In addition, in the embodiment of the present invention, the base station notifies the indication information of the transmit power level of each frequency partition of the terminal, so that the terminal can learn the transmit power configuration of each frequency partition, thereby improving the accuracy of measuring the channel quality of each frequency partition by the terminal. . The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Various modifications and variations of the present invention are possible in the art. 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.

Claims

Claim A channel quality measurement method for measuring channel quality information in a wireless communication system, the method comprising:  The base station transmits a reference signal on the frequency partition through the downlink channel, so that the terminal measures channel quality information of the frequency partition by using the reference signal. 2. The method of claim 1 wherein the frequency partitioning comprises: one or more frequency partitions in the set of frequency partitions. 3. Method according to claim 2, characterized in that the frequency partition is determined in one of the following ways:  Determined by the base station;  Determining and notifying the base station by an upper layer network element;  Determined according to pre-configuration. The method according to claim 2, wherein the transmitting, by the base station, the reference signal on the frequency partition by using a downlink channel comprises:  The base station transmits the reference signal on a predetermined subcarrier of the frequency partition through a downlink channel. 5. The method according to claim 4, wherein the predetermined subcarrier is determined by one of the following methods:  Determined by the base station;  Determining and notifying the base station by an upper layer network element;  Determined according to pre-configuration. The method according to claim 3 or 5, wherein the upper layer network element comprises one of: a base station, a relay device, a base station controller, an access service network, a connection service network, a core network, a core , network gateway. The method according to claim 4, wherein the transmitting, by the base station, the reference signal on the predetermined subcarrier of the frequency partition comprises: Determining, by the base station, a transmit power of the frequency partition, determining a transmit power of the predetermined subcarrier;  The base station transmits the reference signal on the predetermined subcarrier using the determined transmit power. The method according to claim 7, wherein the determining, by the base station, the transmit power of the predetermined subcarrier according to the transmit power of the frequency partition comprises:  The higher the transmission power of the frequency partition, the higher the transmission power of the predetermined subcarrier is determined. 9. The method according to claim 8, wherein the transmit power of the predetermined subcarrier is the same as or different from the average transmit power of the subcarriers of the frequency partition. The method according to any one of claims 1 to 5, 7 to 9, wherein the content and structure of the reference signal transmitted by the base station on a frequency partition through a downlink channel are performed by the base station and The terminal is predetermined or configured according to a preset. The method according to claim 10, after the base station sends the reference signal, the method further includes:  The terminal obtains channel quality information of the frequency partition by measuring the reference signal. 12. The method of claim 11, wherein the channel quality information comprises at least one of the following:  Receiving signal strength indication information;  Disturbance measurement value;  Signal to interference and noise ratio;  Signal to interference ratio; signal to noise ratio;  Spectral efficiency; The measured value related to the channel quality. 13. A method for measuring a strength of a thousand strengths, characterized in that it comprises:  The base station does not send any information on the predetermined time-frequency resource, where the predetermined time-frequency resource includes one or more symbols in the time domain, and the frequency domain includes sub-carriers on one or more frequency partitions;  The terminal obtains the interference strength on the one or more frequency partitions by measuring the signal on the predetermined time-frequency resource. The method according to claim 13, wherein the terminal comprises one terminal or a plurality of terminals that use the base station as a base station. The method according to claim 13, wherein the predetermined time-frequency resource is determined by one of the following methods:  Determined by the base station;  Determining and notifying the base station by an upper layer network element;  Determine according to the pre-configuration. The method according to claim 15, wherein the upper layer network element comprises one of: a base station, a relay device, a base station controller, an access service network, a connection service network, a core network, a core, and a network. Gateway. 17. The method according to claim 15, wherein the predetermined time-frequency resources of different base stations on the same frequency partition are different. A method for acquiring a transmit power, where the terminal obtains transmit power configuration information of a frequency partition, where the method includes:  The base station notifies the terminal of the transmit power configuration information of the frequency partition through the downlink channel. 19. The method of claim 18, wherein the frequency partition comprises one or more frequency partitions in a set of frequency partitions. The method of claim 19, wherein the notifying, by the base station, the transmit power configuration information that the terminal comprises: The base station carries the configuration information in signaling to send to the terminal. The method of claim 19, wherein the notifying, by the base station, the transmit power configuration information that the terminal comprises:  The base station sends the index information of the transmit power of the frequency partition to the terminal, where the index information indicates a location of the transmit power configuration information of the frequency partition in a transmit power configuration index table of the frequency partition, A transmit power configuration index table is stored in the base station and the terminal. The method according to claim 19, wherein the base station notifying the indication information to the terminal comprises:  The base station sends preset signaling to the terminal;  The terminal acquires transmit power configuration information of the frequency partition corresponding to the received preset signaling according to the correspondence between the pre-stored preset signaling and the transmit power configuration information of the frequency partition. The method according to claim 22, wherein the preset signaling comprises one of: identification information of the base station, identification information of the sector, and identification information of the evolved secondary preamble. The method according to claim 18, wherein after the base station notifies the terminal of the transmit power configuration information, the method further includes:  And obtaining, by the terminal, the transmit power configuration information of the frequency partition according to the notification. 25. A channel quality measurement system, comprising:  a base station, configured to send a reference signal on a frequency partition by using a downlink channel, and configured to receive the reference signal, and measure channel quality information of the frequency partition according to the reference signal. 26. A disturbance intensity measurement system, comprising:  a base station, configured to not transmit any content on the predetermined time-frequency resource, so that the terminal that uses the base station as the serving base station receives only signals from other base stations except the base station on the predetermined time-frequency resource, where The predetermined time-frequency resource includes one or more symbols in a time domain, and the frequency domain includes subcarriers on one or more frequency partitions; The terminal is configured to measure a signal on the predetermined time-frequency resource to obtain a interference strength on the one or more frequency partitions. A transmission power acquisition system, comprising:  a base station, configured to notify, by using a downlink channel, transmit power configuration information of the frequency partition to the terminal;  And the terminal is configured to receive a notification sent by the base station, and acquire, according to the notification, the transmit power configuration information of the frequency partition.