WO2011023021A1

WO2011023021A1 - Method and device for controlling uplink transmission power

Info

Publication number: WO2011023021A1
Application number: PCT/CN2010/073919
Authority: WO
Inventors: 裴琎; 鲁照华; 刘锟; 刘颖
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-28
Filing date: 2010-06-13
Publication date: 2011-03-03
Also published as: JP2013503520A; CN101998605B; JP5890307B2; CN101998605A

Abstract

A method for controlling uplink transmission power is disclosed. The method comprises: a base station sends the information about value of γ corresponding to each frequency partition of subframes in a subframe set to a terminal, the subframe set comprises one or more subframes; or, the base station sends the information about value of γ corresponding to some or all of the frequency partitions to Self-Organization Network(SON); or SON sends the information about value of referenced γ corresponding to some or all of the frequency partitions to the base station. A device for controlling uplink transmission power is disclosed. The technical solution can send and adjust value of γ dynamically, control uplink transmission power dynamically, and control inter-cell uplink interference dynamically.

Description

Uplink transmission power control method and device

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to an uplink transmit power control method and apparatus. BACKGROUND In a wireless communication system, a base station is a device that provides services for a terminal, and communicates with a terminal through an uplink and downlink link, where downlink (ie, forward) refers to a direction from the base station to the terminal, and uplink (ie, reverse) To) refers to the direction of the terminal to 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 order to further improve the spectrum utilization efficiency of the wireless communication system, it is often desirable to use all frequency resources as much as possible for each '_| area, in which case mutual interference between users using the same frequency resource in the small interval may be severe. Affects the uplink performance of wireless communication systems. Research shows that reasonable control of uplink transmit power can effectively control interference between uplink cells. For example, in the prior art, different frequency partitions (referred to as FPs) of different frequency bands in the entire system frequency band are set with different expected Interference over Thermal Noise Ratio (IoT) values. The user transmit power is then calculated by the formula P = /0, N/, 57 ?, ^), where the desired uplink IoT factor of the frequency partition is represented, and the above formula can control the inter-cell uplink by controlling the uplink transmit power available. Interference, however, in the above scheme, the value is all subframes for frequency partitioning, and the system divides the frequency partition only once for the entire frequency resource, and the value of each frequency partition is only assigned once, which reduces the flexibility of uplink inter-cell interference control. , which in turn affects the uplink performance of the wireless communication system. In order to meet the needs of an increasingly complex mobile communication environment, current wireless communication networks need to have the ability to dynamically analyze measurement information reported by a large number of related devices, and need to provide adjustment information of relevant device configuration parameters to achieve system performance. Covers performance and traffic for optimal purposes. The self-organizing network (self-organizing network, called SON) is to analyze the relevant data measured by the BS and the MS in the Air Interface, and guide the BS to adjust its parameter configuration accordingly, which can realize the system whole with less manual intervention. Network performance, coverage performance, traffic optimization Purpose. SON usually includes two parts: self configuration and self optimization. Self-configuration is a process of BS initialization and automatic configuration, including cell initialization, neighbor discovery, macro BS self-configuration, etc. Self-optimization is analysis from BS. /MS's measurements related to ad hoc network technology to fine tune BS parameters to optimize system performance (eg, quality of service, network efficiency, throughput, cell coverage, cell capacity). In order to implement FFR (Friction Frequency Reuse) self-optimizing FFR in SON, the necessary signaling interaction between the SON network and the BS is required to optimize the performance of the system. The SON analyzes the necessary information reported by the BS, sends relevant signaling to guide the FFR configuration information of each BS, and dynamically adjusts corresponding configuration parameters. The uplink FFR has a close relationship with the power control algorithm. In the prior art, due to the lack of a value adjustment scheme between the SON and the BS, the uplink inter-cell interference control is limited, thereby affecting the self-optimization of the FFR. The adjustment of the value of the base station to the terminal in the related art is not flexible enough, and the lack of the value adjustment scheme between the SON and the BS affects the self-optimization of the FFR, and no effective solution has been proposed yet. SUMMARY OF THE INVENTION The present invention has been made in view of the inflexibility of the value adjustment in the prior art, or the problem that no value adjustment is performed between the SON and the BS. Therefore, the main object of the present invention is to provide an uplink transmission power control method and A device to solve at least one of the above problems. In order to achieve the above object, the present invention provides an uplink transmission power control method. The uplink transmit power control method according to the present invention includes: the base station transmitting, to the terminal, information of a value corresponding to a frequency partition of each subframe in the subframe set, where the subframe set includes one or more subframes. Preferably, the values of different subframes in the subframe set are the same or different. Preferably, the frequency partitions in different subframes in the subframe set are divided in the same or different manner. Preferably, each sub-frame frequency partition in the subframe set is divided in the same manner and each frequency When the ^ value corresponding to the partition is the same, only one value is sent. In this case, the subframe set may be all subframes or partial subframes. Preferably, the information that the base station sends the value corresponding to the frequency partition in the subframe set to the terminal includes: sending, by the base station, information of the value corresponding to all or part of the frequency partitions in the subframe set to the terminal, where In the case of the information of the value, the terminal adopts the default value or the y value corresponding to the untransmitted frequency partition recently obtained by the terminal as the straight line corresponding to the untransmitted frequency partition. Preferably, the base station sends the information of the value corresponding to the frequency partition in the subframe set to the terminal by using multicast signaling, unicast signaling, or broadcast signaling. Preferably, after the base station sends the information of the value corresponding to the frequency partition in the subframe set to the terminal, the method further includes: after receiving the information, the base station determines the transmit power on the corresponding frequency partition according to the y value corresponding to the different frequency partition. In order to achieve the above object, the present invention provides an uplink transmission power control method. The uplink transmit power control method according to the present invention includes: the base station transmitting information of the value corresponding to all or part of the frequency partition to the upper layer entity. The upper layer entity may be a self-organizing network SON. Preferably, the ^ value comprises at least one of: a convergence value of the ^ value, an instantaneous value of the first predetermined time value, and a statistical average value of the first predetermined time value, wherein the convergence value of the ^ value is The convergence of the y value obtained after a predetermined time adjustment. Optionally, the first predetermined time comprises one of: one or more subframes, one or more frames, one or more superframes. Preferably, the SON comprises at least one of the following: a network unit, a functional module in the network unit. Preferably, the network unit comprises at least one of: a base station, a relay device, a server, a base station Controller, access to the monthly network, connection to the monthly network, core network, core network gateway. Preferably, the base station sends the information of the value to the SON according to the predetermined triggering mechanism, where the predetermined triggering mechanism includes at least one of the following: a predetermined period triggering, triggering if the overall performance of the SON satisfies the first condition, and the performance of the network unit is satisfied. Triggered in the case of the second condition. The first condition includes at least one of the following: a QoS threshold of the SON is less than a predetermined quality of service threshold of the SON, a network efficiency threshold of the SON is less than a predetermined network efficiency threshold of the SON, and a throughput threshold of the SON The predetermined throughput threshold is less than the SON, the cell coverage threshold of the SON is smaller than the predetermined cell coverage threshold of the SON, the cell capacity threshold of the SON is smaller than the predetermined cell capacity threshold of the SON, and the number of frequency partitions is changed. The transmit power of the frequency partition changes, the target IOT level of the frequency partition changes, and the base station joins the network. The second condition includes at least one of the following: the monthly quality threshold of the network element is less than a predetermined quality of service threshold of the network element, the network efficiency threshold of the network element is less than a predetermined network efficiency threshold of the network element, and the network The throughput threshold of the unit is smaller than the predetermined throughput threshold of the network unit, the cell coverage threshold of the network unit is smaller than the predetermined cell coverage threshold of the network unit, and the network unit and the area capacity threshold are smaller than the network unit. The predetermined cell capacity threshold, the number of frequency partitions, the change in the transmit power of the frequency partition, the change in the level of the desired uplink interference-to-noise ratio of the frequency partition, and the base station joining the network. In order to achieve the above object, the present invention provides an uplink transmission power control method. The uplink transmit power control method according to the present invention includes: The SON transmits information of a reference y value corresponding to all or part of the frequency partition to the base station. Preferably, before the SON sends the information of the reference value corresponding to all or part of the frequency partition to the base station, the method further includes: the base station transmitting, to the SON, information of the value corresponding to all or part of the frequency partition. Preferably, the manner in which the SON sends the reference value information to the base station includes one of the following: SON sends the absolute value of the reference value to the base station, and the difference between the SON value that the SON sends to the base station and the value that the base station sends to the SON. Preferably, the information about the reference value corresponding to all or part of the frequency partition is sent to the base station at the SON. Thereafter, the method further includes: the base station adjusts the y value corresponding to all or part of the frequency partition according to the reference y value. Preferably, the SON comprises at least one of the following: a network unit, a functional module in the network unit. Preferably, the network unit comprises at least one of the following: a base station, a relay device, a server, a base station controller, an access monthly service network, a connection monthly service network, a core network, and a core network gateway. Preferably, the SON calculates a reference value according to a predetermined triggering mechanism, where the predetermined triggering mechanism includes at least one of the following: a predetermined period triggering, triggering if the overall performance of the SON satisfies the first condition, and the performance of the network unit satisfies the second Triggered in the case of conditions. Preferably, the first condition includes at least one of the following: a monthly quality threshold of the SON is less than a predetermined monthly quality threshold of the SON, a network efficiency threshold of the SON is less than a predetermined network efficiency threshold of the SON, and the SON is The throughput threshold is less than the predetermined throughput threshold of the SON, the cell coverage threshold of the SON is smaller than the predetermined cell coverage threshold of the SON, the cell capacity threshold of the SON is smaller than the predetermined cell capacity threshold of the SON, and the frequency The number of partitions changes, the transmit power of the frequency partition changes, the target IOT level of the frequency partition changes, and the base station joins the network. Preferably, the second condition comprises at least one of the following: the quality of service threshold of the network element is less than a predetermined quality of service threshold of the network element, and the network efficiency threshold of the network element is less than a predetermined network efficiency threshold of the network element. The throughput threshold of the network unit is smaller than the predetermined throughput threshold of the network unit, the cell coverage threshold of the network unit is smaller than the predetermined cell coverage threshold of the network unit, and the cell capacity threshold of the network unit is smaller than the network unit. The predetermined cell capacity threshold, the number of frequency partitions, the change in the transmit power of the frequency partition, the change in the level of the desired uplink interference-to-noise ratio of the frequency partition, and the base station joining the network. In order to achieve the above object, the present invention further provides an uplink transmit power control apparatus, which is located at a base station, and includes: a sending module, configured to send, to an upper layer entity, information of a value corresponding to all or part of the frequency partition. Preferably, the uplink transmit power control apparatus may further include: a receiving module, configured to receive information that the SON sends a reference value corresponding to all or part of the frequency partition; and an adjustment module, configured to adjust the all or part according to the reference value The value corresponding to the frequency partition. According to the present invention, the base station dynamically reports the value, and the SON dynamically performs the value reported by the base station. The method of adjusting and transmitting to the base station, the base station transmitting different values to the terminal in different subframes, solves the problem that the value adjustment is inflexible and the adjustment scheme lacks a complete value between the SON and the BS, and the dynamic transmission of the value can be realized. Dynamic control of adjustment and uplink transmit power, which in turn enables flexible control, interval uplink interference, and optimized network performance. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a flowchart of an uplink transmit power control method according to Embodiment 1 of the present invention; FIG. 2 is a frequency of adjacent subframes adopting different frequency resource division modes according to Embodiment 1 of the present invention; FIG. 3 is a flowchart of uplink transmit power control based on values on frequency partitions according to Embodiment 1 of the present invention; FIG. 4 is a neighboring manner using the same frequency resource partitioning method according to Example 2 of the present invention. FIG. 5 is a schematic diagram of frequency partitioning of adjacent subframe sets adopting different frequency resource division manners according to Example 3 of the present invention; FIG. 6 is the same frequency resource according to Example 4 of the present invention. FIG. 7 is a flowchart of an uplink transmit power control method according to Embodiment 2 of the present invention; FIG. 8 is a schematic structural diagram of a SON network according to Embodiment 5 of the present invention; FIG. 9 is a schematic diagram of a frequency partitioning scheme of a neighboring subframe set according to Embodiment 2 of the present invention; A schematic diagram of a frequency resource allocation manner of adjacent sectors using FFR technology and a transmission power of each frequency partition in the fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION Functional Overview In view of the problems in the related art, an embodiment of the present invention provides an uplink transmit power control scheme. The processing principle of the scheme is: The base station sends a value corresponding to the frequency partition in the subframe set to the terminal. Or the base station sends the information of the value corresponding to all or part of the frequency partition to the self-organizing network SON; or, the SON sends the information of the reference value corresponding to all or part of the frequency partition to the base station. The scheme divides the entire uplink available resource into a plurality of subframe sets, sets different frequency partition distributions for each subframe set, and sets each frequency partition to directly control the uplink 4 level of different frequency partitions, in different subframes. Different values are set to adjust the uplink transmit power of the terminal in real time, which can flexibly control uplink interference between cells and improve the performance of the wireless communication system. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Method Embodiments Embodiment 1 According to an embodiment of the present invention, an uplink transmission power control method is provided. 1 is a flowchart of an uplink transmit power control method according to Embodiment 1 of the present invention. As shown in FIG. 1, the method includes the following steps S102 to S104: Step S102: A base station sends a subframe set to a terminal. The information of the γ value corresponding to the frequency partition of each subframe, where the subframe set includes one or more subframes, that is, the subframe set is a specific one or more subframes. The values of the different subframes in the subframe set may be the same or different, and the manner of dividing the frequency partitions in different subframes in the subframe set may be the same or different. The base station may send the information of the value corresponding to all or part of the frequency partitions in the subframe set to the terminal, where the terminal may adopt the default value or adopt the latest value obtained by the terminal in the case of transmitting the information of the value corresponding to the partial frequency partition. The y value corresponding to the untransmitted frequency partition is used as the value corresponding to the untransmitted frequency partition. For example, the base station transmits several (all or part of) the subframe set through the downlink channel. The information of the corresponding value of the frequency partition, if the value corresponding to some frequency partitions is not sent this time, the terminal adopts the standard default configuration value of ^, the value may be 1 or other values; or adopt the recently obtained Corresponding to the value of the frequency partition, the value may be sent by the base station to the terminal last time, or may be sent by the base station to the terminal in the last few times. The base station may send, by using multicast signaling, unicast signaling, or broadcast signaling, information about the y value corresponding to the frequency partition in the subframe set to the terminal. In the prior art, the base station sends the information of the value corresponding to the frequency partition to the terminal for all the subframes. In the technical solution, by transmitting a value to a specific one or more subframes instead of all subframes, the flexibility of the base station to adjust the value of the terminal is improved. In addition, in the prior art, when the division manners of the frequency partitions of the respective subframes in the subframe set are the same and the values corresponding to the respective frequency partitions are the same, the value is transmitted for each frequency partition. In the present invention, only one value can be transmitted, and specifically, only one value can be broadcast. In this technical solution, the subframe set may be a specific one or more subframes, or may be all subframes. By transmitting only one value, system resources are saved, and the flexibility of the base station to adjust the y value of the terminal is improved. Specifically, the selection of the value of each frequency partition depends on the expected uplink IoT value of the neighboring cell on the frequency partition, and the specific dependency may be specifically determined according to the actual situation, which is not limited by the embodiment of the present invention. If the expected uplink IoT value of the neighboring cell on the frequency partition is larger, the value of the frequency partition is larger, and if the expected uplink IoT value of the neighboring cell on the frequency partition is smaller, the upper part of the frequency partition is ^ The smaller the value. The dependence of the value of the above-mentioned value on the value of the uplink IoT value of the neighboring cell in the frequency partition may be determined according to the actual situation, which is not limited by the embodiment of the present invention. Step S104: After receiving the information of the value corresponding to the frequency partition, the terminal determines the transmit power on the corresponding frequency partition according to the y value corresponding to each frequency partition. In this embodiment, under the preset triggering condition, the base station may send the value to the terminal multiple times, thereby overcoming the prior art, the system only divides the frequency partition into the entire frequency resource, and the value of each frequency partition is only assigned once. The defect, thereby improving the flexibility of uplink inter-cell interference control and the uplink performance of the wireless communication system. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. Example 1 FIG. 2 is a schematic diagram of frequency partitioning of adjacent subframes adopting different frequency resource division manners according to the first embodiment of the present invention. As shown in FIG. 2, different frequency resources are used in subframe 1 and subframe 2. The division method is used to divide the frequency resources, and the uplink available frequency resources of subframe 1 and subframe 2 are divided into frequency partitions (Frequency Partitions), and each frequency partition has its own value, which indicates the desired value in the frequency band. The amount of uplink interference caused by data transmitted by other cell terminals. In subframe 1, frequency partitions A and B have lower uplink values, and frequency partitions C and D have higher uplink values, that is, for subframe 1, frequency partitions A and B can tolerate relatively small Uplink interference, frequency partitions C, D can tolerate relatively large uplink interference. In subframe 2, the frequency partitions A and C have lower uplink values, and the frequency partition B has a higher uplink value, that is, for subframe 2, the frequency division β Α, C can tolerate relatively small Uplink interference, frequency partitioning, can tolerate relatively large uplink interference. 3 is a flow chart showing uplink transmission power control based on values on respective frequency partitions according to Embodiment 1 of the present invention. FIG. 3 is a schematic diagram of the process of controlling the uplink transmit power of the terminal occupying the subframe 1 in the system by using the two sub-frame resource division modes shown in FIG. 2 . The specific steps are as follows: Step 101: Sub-frame 1 is sent by using downlink signaling. Uplink available frequency resource division information, the uplink available frequency resource is divided into four frequency partitions A, B, C, and D, and as shown in Table 1 (Table 1-Α, Table 1-Β, Table 1-C) The downlink signaling transmits information of values corresponding to each frequency partition. Table 1-A shows the values of the signaling used by the offset set of subframes starting from the set of subframes that received the signaling, wherein the set of subframes is continuous. Table 1-B indicates that the subframe set identified by the subframe set uses the value of the signaling, wherein the subframe set may be continuous or discrete. Table 1 - C indicates that the subframe set of the same Bitmap uses the corresponding value, wherein the subframe set of the same Bitmap may be continuous or discrete. Table 1-A

Step 102: After receiving the information of the value corresponding to each frequency partition, the terminal determines the value of the value on the different frequency partition, and calculates the terminal on the subcarrier included in the corresponding frequency partition according to formula (1). Transmit power.

In formula (1), the variable represents the transmission power of the terminal on the corresponding subcarrier, N is the thermal noise, and the uplink interference-to-noise ratio measured by the base station, and the variable W and IoT are notified by the base station through the downlink channel, which is the desired uplink. The IoT factor is the path loss compensation value determined by the terminal according to the downlink channel reception quality, and ⁵⁷ ^ is the downlink signal to interference ratio, which is the number of receiving antennas of the base station. It should be noted that the formula (1) is one of the implementation manners of the method according to the embodiment of the present invention. Any power control algorithm capable of controlling the uplink IoT can be used as an optional implementation manner of the method. limited. Example 2 FIG. 4 is a schematic diagram of frequency partitioning of adjacent subframes in the same frequency resource division manner according to the second embodiment of the present invention. As shown in FIG. 4, in subframe 1 and subframe 2, the same frequency resource is used. The division method is used to divide the frequency resources, and the uplink available frequency resources of subframe 1 and subframe 2 are divided into several frequency partitions, and each frequency partition has its own value, which identifies the desired other cells in the frequency band. The amount of uplink interference caused by the terminal sending data. In subframe 1, frequency partition A,

B has a lower uplink value, and frequency partitions C and D have higher uplink values. That is, for subframe 1, frequency partitions A and B can tolerate relatively small uplink interference, and frequency partitions C and D. Can tolerate relatively large uplink interference. In subframe 2, frequency partitions A and C have lower uplink values, and frequency partitions B and D have higher uplink values, that is, for subframe 2, frequency partitions A and C can tolerate relatively small Uplink interference, frequency partitions B, D can tolerate relatively large uplink interference. FIG. 3 is a schematic diagram of the process of controlling the uplink transmit power of the terminal occupying the subframe 1 in the system by using the two subframe resource division manners shown in FIG. 4, and the specific steps are as follows: Step 201: Subframe 1 passes downlink signaling Sending uplink available frequency resource division information, the uplink available frequency resource is divided into four frequency partitions A, B, C, and D, and as shown in Table 1 (Table 1-Α, The downlink signaling shown in Table 1-B and Table 1-C) transmits information of values corresponding to each frequency partition. Step 202: After receiving the information of the value corresponding to each frequency partition, the terminal determines the value of the value on the different frequency partitions, and calculates the transmit power of the terminal on the subcarriers included in the corresponding frequency partition according to formula (1). Example 3 FIG. 5 is a schematic diagram of frequency partitioning of a set of adjacent subframes adopting different frequency resource division manners according to Example 3 of the present invention. As shown in FIG. 5, in the subframe set 1 and the subframe set 2, frequency resource division is performed by using different frequency resource division manners, and uplink available frequency resources of the subframe set 1 and the subframe set 2 are divided into several frequencies. Partitioning, each frequency partition has its own value, which identifies the amount of uplink interference caused by the data transmitted by other cell terminals on the frequency band. In subframe set 1, frequency partitions A and B have lower uplink values, and frequency partitions C and D have higher uplink values, that is, for subframe 1, frequency partitions A and B can tolerate relatively small Uplink interference, frequency partitions C, D can tolerate relatively large uplink interference. In the subframe set 2, the frequency partitions A and C have lower uplink values, and the frequency partition B has a higher uplink value, that is, for the subframe set 2, the frequency division β Α, C can tolerate relatively Small uplink interference, frequency partitioning, can tolerate relatively large uplink interference. The process of controlling the uplink transmit power of the terminal occupying the subframe set 1 in the system is as follows. The specific steps are as follows: Step 301: The subframe set 1 is adopted. The downlink signaling sends uplink available frequency resource division information, and the uplink available frequency resource is divided into four frequency partitions of eight, B, C, and D, and is as shown in Table 1 (Table

The downlink signaling shown in 1-A, Table 1-B, and Table 1-C) transmits information of values corresponding to each frequency partition. Step 302: After receiving the information of the value corresponding to each frequency partition, the terminal determines the value of the value on the different frequency partition, and calculates the transmit power of the terminal on the subcarrier included in the corresponding frequency partition according to formula (1). In this example, the frequency resource division manners of different subframes in the subframe set are the same as an example. In practical applications, the frequency resource division manners of different subframes in the subframe self-assembly may also be different, and the implementation principle thereof is The case where the frequency resources are divided in the same manner is roughly the same, and will not be mentioned here. Example 4 FIG. 6 is a schematic diagram showing frequency partitioning of a set of adjacent subframes adopting the same frequency resource division manner according to Example 4 of the present invention. As shown in FIG. 6, in the subframe set 1 and the subframe set 2, the same frequency resource partitioning manner is adopted to divide the frequency resources, and the uplink available frequency resources of the subframe set 1 and the subframe set 2 are divided into several frequencies. Partitioning, each frequency partition has its own value, which identifies the amount of uplink interference caused by the data transmitted by other cell terminals on the frequency band. In subframe set 1, frequency partitions A and B have lower uplink values, and frequency partitions C and D have higher uplink values, that is, for subframe 1, frequency partitions A and B can tolerate relatively small Uplink interference, frequency partitions C, D can tolerate relatively large uplink interference. In subframe set 2, frequency partitions A and C have lower uplink values, and frequency fractions β Β and D have higher uplink values, that is, for subframe set 2, frequency divisions β Α, C can Tolerate relatively small uplink interference, frequency partitions B, D can tolerate relatively large uplinks. In FIG. 3, the two sub-frame set resource division manners shown in FIG. 6 are taken as an example, and the process of controlling the uplink transmit power of the terminal occupying the subframe set 1 in the system is described. The specific steps are as follows: Step 401: The subframe set 1 passes The downlink signaling sends uplink available frequency resource division information, and the uplink available frequency resource is divided into four frequency partitions of eight, B, C, and D, and is as shown in Table 1 (Table 1-A, Table 1-B, Table 1). C) The downlink signaling shown transmits information of values corresponding to each frequency partition. Step 402: After receiving the information of the value corresponding to each frequency partition, the terminal determines the value of the value on the different frequency partition, and calculates the transmit power of the terminal on the subcarrier included in the corresponding frequency partition according to formula (1). Embodiment 2 According to an embodiment of the present invention, an uplink transmit power control method is provided. The method includes: The base station sends information of the value corresponding to all or part of the frequency partition to the upper layer entity, where the upper layer entity may be the self-organizing network SON. FIG. 7 is a flowchart of an uplink transmit power control method according to Embodiment 2 of the present invention. As shown in FIG. 7, the method includes the following steps S702 to S706: Step S702: The base station sends all or part of the frequency partition corresponding to the SON. The information of the value, wherein the value of ^ may include at least one of: a convergence value of the value of ^, an instantaneous value of the value of the first predetermined time, a statistical average value of the value of the first predetermined time, wherein the convergence of the value of ^ The value is a convergence value obtained after the adjustment of the first predetermined time, and the first predetermined time may include one of the following: one or more subframes, one or more frames, one or more superframes. Specifically, in the first predetermined time, the value may converge. In this case, the convergence value of the ^ value may be used as the current value, but the value may not be converged until the end of the first predetermined time. The instantaneous value of the value at the end of the predetermined time is taken as the current ^" value, that is, in the case where the ^^ value does not converge, the ^ value includes the instantaneous value of the value at the end of the first predetermined time, and the first predetermined time may also be selected. The instantaneous value of the value at any time is taken as the current value. It should be noted that the specific value of the selected value can be arbitrarily selected, and the basis of the selection is not limited to the selection basis described above. Preferably, the above base station can be used with SON. All or part of the base station performing the signaling interaction, the base station may send the information of the value to the SON according to the predetermined triggering mechanism. The SON in the method may include at least one of the following: a network unit, a function module in the network unit, where the network unit The at least one of the following may be included: a base station, a relay device, a server, a base station controller, an access service network, a connection monthly network, a core network And the core network gateway. Step S704, the SON sends the information of the reference value corresponding to all or part of the frequency partition to the base station, and the method for sending the information of the reference value may include one of the following: SON sends a reference to the base station.

The absolute value of the value, the difference between the SON value sent by the SON to the base station and the value of the ^ value sent by the base station to the SON. In this step, the SON can calculate the reference value according to a predetermined triggering mechanism. Step S706, the base station adjusts the value corresponding to all or part of the frequency partition according to the reference y value. The predetermined triggering mechanism in steps S702 and S704 may include at least one of the following: a predetermined period trigger, triggering if the overall performance of the SON satisfies the first condition, and triggering if the performance of the network unit satisfies the second condition. The first condition may include at least one of the following: a QoS threshold of the SON, a predetermined quality of service threshold of the SON, a network efficiency threshold of the SON, and a predetermined network efficiency threshold of the SON, SON The throughput threshold is less than the predetermined throughput threshold of the SON, the cell coverage threshold of the SON is smaller than the predetermined cell coverage threshold of the SON, the cell capacity threshold of the SON is smaller than the predetermined cell capacity threshold of the SON, The number of frequency partitions changes, the transmit power of the frequency partition changes, the target IOT level of the frequency partition changes, and the base station joins the network; the second condition may include at least one of the following: the quality of service threshold of the network unit is less than the predetermined quality of service of the network unit The threshold value, the network efficiency threshold of the network unit is less than the predetermined network efficiency threshold of the network unit, the throughput threshold of the network unit is less than the predetermined throughput threshold of the network unit, and the cell coverage gate of the network unit The limit value is smaller than the predetermined cell coverage threshold of the network unit, and the cell capacity threshold of the network unit is smaller than the predetermined cell of the network unit. Threshold amount, changing the number of frequency partitions target, transmit power change frequency partitions, the desired frequency partition uplink interference noise ratio level is changed, the base station to join the network. It should be noted that, after the base station sends information of values corresponding to a plurality of (partial or all) frequency partitions to the SON, the SON may adjust and transmit all the corresponding values of the plurality of frequency partitions, or may also send the foregoing multiple frequencies. The part corresponding to the value of the partition is adjusted and sent (the value corresponding to the partial frequency partition does not need to be adjusted or the SON operation capability is limited); and, in the SON, the reference value corresponding to several (partial or all) frequency partitions is sent to the base station. After the information of the adjusted value (i.e., the adjusted value), the base station may adjust the values of all the frequency partitions corresponding to the above reference value, or may only adjust the value of the partial frequency partition corresponding to the reference y value. The implementation process of the embodiment of the present invention will be described in detail below with reference to examples. Example 5 FIG. 8 is a schematic structural diagram of a SON network according to Embodiment 5 of the present invention. As shown in FIG. 8, three base stations are supported, which are BS1, BS2, and BS3, respectively, wherein the monthly base stations of MS1 and MS2 are BS1; MS3 and MS4 account for BS2; MS5, MS6 ό々 The monthly basis is BS3. Moreover, the SON may be a network entity or exist as a functional module in the network element and perform necessary signaling interaction with BS1, BS2 and BS3. At least the self-optimizing FFR module (self-optimizing FFR module) is included in the SON, and other functional modules can also be included. 9 is a schematic diagram of a frequency resource allocation manner of adjacent sectors using FFR technology and a transmission power of each frequency partition in the fifth embodiment of the present invention. As shown in FIG. 9, BS1, BS2, and BS3 4 divide the available frequency resources into four frequency partitions: Wl, W2, W3, and W4. Where W1, W2, W3 belong to the Reuse 3 (ie, the frequency reuse factor is 3) set, and W4 belongs to the Reuse 1 (ie, the frequency reuse factor is 1) set. Where the transmission power of each frequency partition satisfies the condition

^P Hi ^{> P} L foot. This example uses the BS1 as an example to specifically describe the method provided by the embodiment of the present invention. Step 901: The base station reports information to the SON, where the information may include at least one of the following: a BSID, a number of terminals connected by the base station, a location distribution information of the terminal, and a terminal on the ^, ^, ^, ^

SINR value, , ^, ^, ^ on the traffic load indication information, ^, ^, ^ on the interference strength indication information, ^W " ^W " ^W 3, 4 resource metric information (R _esource Metrics, the cylinder is called MR) ,

^, ₂ , ₃ , ₄ ; values ^ γ ₂ , γ ₃ , ₄ . Wherein, ^ can be an instantaneous value, which can be an instantaneous value of a value corresponding to each FP at any time in a period of time, or an adjustment value corresponding to each FP obtained after a period of adjustment, that is, no convergence after adjustment The instantaneous value of the value at the end of the period of time may also be a statistical average or a convergence value. In this embodiment, y ₂ , -, ^ are set to a convergence value, that is, -, ^ is a value obtained by adjusting a certain power control algorithm over a period of time. It should be noted that the foregoing specific power control algorithm can be arbitrarily selected according to the actual situation, and the specific adjustment time can also be flexibly selected, which is not limited by the embodiment of the present invention. The period of time may be one or more subframes, or one or more frames, or one or more superframes. Step 902: The SON determines, according to the information reported by the base station, the reference values corresponding to BS 1, ^ ² , ^, ^ ⁴ , ₂ , ₃ , and ₄ , and sends ₂ , , and to BS1, in this step, SON The method for determining the reference value according to the value reported by the base station can be flexibly selected according to the actual situation. The specific determination method has been introduced in the prior art, and is not mentioned here. Step 903: The BS1 uniformly adjusts the preset FFR parameter adjustment time or separately adjusts the value of each frequency partition at an unspecified time, and notifies the terminal of the local base station of the new value of the frequency partition.

MS 1, MS2. Among them, BS 1 can directly use ^, ^ ³ , and ^ sent by SON as the new value of frequency partition; or BS1 can determine the new value of frequency partition ^ ¹ by calculating ^, ^ ² , ^ ⁴ according to SON. ^ ² , ^ ³ , ^ ⁴ . Preferably, after acquiring a new value, BS1 can control the uplink transmit power of the terminal. As can be seen from the above description, the uplink transmit power control method provided by the embodiment of the present invention can implement dynamic transmission, adjustment, and dynamic control of uplink transmit power between a base station and a SON self-optimized network, thereby enabling flexible control of a cell. Uplink interference, optimize network performance. The third embodiment of the present invention provides an uplink transmit power control device, which is located at a base station, and includes: a sending module, configured to send, to an upper layer entity, information of a value corresponding to all or part of the frequency partition. In addition, the embodiment may further include: a receiving module, configured to receive, by the SON, information of a reference value corresponding to all or part of the frequency partitions; and an adjustment module, configured to adjust the all or part of the frequency according to the reference value The value corresponding to the partition. For the method implemented in this embodiment, reference may be made to the related description of the second embodiment, and all the beneficial effects of the foregoing embodiments are not repeated. Obviously, those skilled in the art should understand that the above modules or steps of the present invention may be Implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of computing devices, optionally, they may be implemented by program code executable by the computing device, such that They may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof may be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

An uplink transmit power control method, comprising:

The base station sends information about a value corresponding to a frequency partition of each subframe in the subframe set to the terminal, where the subframe set includes one or more subframes.

The method according to claim 1, wherein the y values corresponding to different subframes in the subframe set are the same or different.

The method according to claim 1, wherein the frequency partitions in different subframes in the subframe set are divided into the same or different manners.

The method according to claim 1, wherein, in a case where the division manners of the frequency partitions of the respective subframes in the subframe set are the same and the values corresponding to the respective frequency partitions are the same, only one of the ^ Value, the set of subframes is all subframes or partial subframes in the frequency partition.

The method according to claim 1, wherein the sending, by the base station, the information of the value corresponding to the frequency partition in the subframe set to the terminal includes: sending, by the base station, the terminal to the terminal And the information about the value corresponding to all or part of the frequency partitions in the subframe set, where the terminal uses the default value or uses the terminal to obtain the latest value in the case of transmitting the information of the value corresponding to the partial frequency partition. The value corresponding to the unsent frequency partition is the value corresponding to the unsent frequency partition.

The method according to claim 1, wherein the base station sends the corresponding to the frequency partition in the subframe set to the terminal by using multicast signaling, unicast signaling or broadcast signaling. Value information.

The method according to any one of claims 1 to 6, wherein after the base station sends the information of the value corresponding to the frequency partition in the subframe set to the terminal, the The method also includes: After receiving the information, the terminal determines the transmit power on the corresponding frequency partition according to the value corresponding to the different frequency partitions.

8. An uplink transmit power control method, comprising:

The base station transmits information of values corresponding to all or part of the frequency partition to the upper layer entity.

9. The method according to claim 8, wherein the upper layer entity is a self-organizing network SON.

10. The method according to claim 9, wherein the value comprises at least one of: a convergence value of a value, an instantaneous value of a first predetermined time value, and a statistical value of a first predetermined time value. An average value, wherein the convergence value of the ^ value is a convergence value obtained after the adjustment of the first predetermined time.

The method according to claim 10, wherein the first predetermined time comprises one of: one or more subframes, one or more frames, one or more superframes.

The method according to any one of claims 9-11, wherein the SON comprises at least one of the following: a network unit, a function module in the network unit.

The method according to any one of claims 9-11, wherein the network unit comprises at least one of: a base station, a relay device, a server, a base station controller, an access service network, a connection month Service network, core network, core network gateway.

The method according to any one of claims 9 to 11, wherein the base station sends the information of the value to the SON according to a predetermined triggering mechanism, where the predetermined triggering mechanism includes at least the following One of: triggering a predetermined period, triggering if the overall performance of the SON satisfies the first condition, and triggering if the performance of the network unit satisfies the second condition,

The first condition includes at least one of the following: a QoS threshold of the SON is less than a predetermined quality of service threshold of the SON, and a network efficiency threshold of the SON is smaller than a predetermined network of the SON The efficiency threshold value, the throughput threshold of the SON is smaller than a predetermined throughput threshold of the SON, the cell coverage threshold of the SON is smaller than a predetermined cell coverage threshold of the SON, and the SON The cell capacity threshold is less than the predetermined cell capacity threshold of the SON, and the frequency partition The number of changes, the transmit power of the frequency partition changes, the target IOT level change of the frequency partition, and the base station force into the network;

The second condition includes at least one of the following: a quality of service threshold of the network element is less than a predetermined quality of service threshold of the network element, and a network efficiency threshold of the network element is smaller than that of the network element a predetermined network efficiency threshold, a throughput threshold of the network element being less than a predetermined throughput threshold of the network element, a cell coverage threshold of the network element being less than a predetermined cell coverage threshold of the network element a limit, a cell capacity threshold of the network element is less than a predetermined cell capacity threshold of the network element, a change in the number of frequency partitions, a change in transmit power of the frequency partition, and a target expected uplink interference noise ratio of the frequency partition Change, the base station joins the network.

15. An uplink transmit power control method, comprising:

The SON transmits information of the reference y value corresponding to all or part of the frequency partition to the base station.

The method according to claim 15, wherein before the SON sends the information of the reference value corresponding to all or part of the frequency partition to the base station, the method further includes:

The base station sends information of the ^ value corresponding to all or part of the frequency partition to the SON.

The method according to claim 16, wherein the manner in which the SON sends the information of the reference value to the base station includes one of the following: the SON sends the reference to the base station. An absolute value of the value, the difference between the SON sent by the SON to the base station and the value sent by the base station to the SON.

The method according to claim 15, wherein after the SON sends the information of the reference y value corresponding to the all or part of the frequency partition to the base station, the method further includes: The base station adjusts the value corresponding to all or part of the frequency partition according to the reference value.

The method according to any one of claims 15 to 18, wherein the SON comprises at least one of the following: a network unit, a functional module in the network unit.

20. The method of claim 19, wherein the network element comprises the following One of the less: base station, relay device, server, base station controller, access service network, connection monthly network, core, network, core, network gateway.

The method according to any one of claims 15 to 18, wherein the SON calculates the reference value according to a predetermined triggering mechanism, wherein the predetermined triggering mechanism comprises at least one of the following: a predetermined period Triggering, triggering if the overall performance of the SON satisfies the first condition, and triggering if the performance of the network unit satisfies the second condition,

The first condition includes at least one of the following: a QoS threshold of the SON is less than a predetermined quality of service threshold of the SON, and a network efficiency threshold of the SON is less than a predetermined network efficiency gate of the SON a limit, a throughput threshold of the SON is smaller than a predetermined throughput threshold of the SON, a cell coverage threshold of the SON is smaller than a predetermined cell coverage threshold of the SON, and a cell of the SON The capacity threshold is smaller than the predetermined cell capacity threshold of the SON, the number of frequency partitions is changed, the transmission power of the frequency partition is changed, the target IOT level of the frequency partition is changed, and the base station joins the network;

The method according to any one of claims 15 to 18, wherein after the SON transmits the information of the reference y value corresponding to all or part of the frequency partitions to the base station, the method further includes: the base station according to the reference value Adjusting values corresponding to all or part of the frequency partitions.

An uplink transmit power control device, which is located at a base station, and includes:

The sending module is configured to send, to the upper layer entity, information about the y value corresponding to all or part of the frequency partition.

24. The device of claim 23, further comprising:

a receiving module, configured to receive, by the SON, information about a reference value corresponding to all or part of the frequency partitions;

An adjusting module, configured to adjust, according to the reference value, the y corresponding to all or part of the frequency partition value. The device according to claim 23 or 24, wherein the base station sends the information of the value to the SON according to a predetermined triggering mechanism, wherein the predetermined triggering mechanism comprises at least one of the following: Triggering, triggering if the overall performance of the SON meets the first condition, and triggering if the performance of the network unit satisfies the second condition, where the first condition includes at least one of the following: The service quality threshold of the SON is less than a predetermined quality of service threshold of the SON, the network efficiency threshold of the SON is less than a predetermined network efficiency threshold of the SON, and the throughput threshold of the SON is less than a predetermined throughput threshold of the SON, a cell coverage threshold of the SON is smaller than a predetermined cell coverage threshold of the SON, and a cell capacity threshold of the SON is smaller than a predetermined cell capacity threshold of the SON The limit value, the number of frequency partitions change, the transmission power of the frequency partition changes, the target IOT level change of the frequency partition, and the base station force into the network;