WO2011124176A2 - 一种通信系统中滤波方式的处理方法及装置 - Google Patents

一种通信系统中滤波方式的处理方法及装置 Download PDF

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Publication number
WO2011124176A2
WO2011124176A2 PCT/CN2011/073996 CN2011073996W WO2011124176A2 WO 2011124176 A2 WO2011124176 A2 WO 2011124176A2 CN 2011073996 W CN2011073996 W CN 2011073996W WO 2011124176 A2 WO2011124176 A2 WO 2011124176A2
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Prior art keywords
filtering
filtering mode
base station
performance parameter
terminal
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PCT/CN2011/073996
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English (en)
French (fr)
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WO2011124176A3 (zh
Inventor
高磊
王超
郭宏伟
王玉
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华为技术有限公司
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Priority to PCT/CN2011/073996 priority Critical patent/WO2011124176A2/zh
Priority to CN201180000514.1A priority patent/CN102884727B/zh
Publication of WO2011124176A2 publication Critical patent/WO2011124176A2/zh
Publication of WO2011124176A3 publication Critical patent/WO2011124176A3/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means

Definitions

  • Embodiments of the present invention relate to the field of wireless communication technologies, and in particular, to a method and an apparatus for processing a filtering method in a communication system.
  • VAMOS Voice services over Adaptive Multi-user
  • RRC Root Raised Cosine, rms raised cosine
  • Wider wide filtering of pulse shaping filters
  • Linear GMSK Linear Gaussian-filtered Minimum Shift Keying, linear Gaussian minimum shift keying
  • Narrow Narrow filtering of shaping filters.
  • the Wider filtering method has better receiving performance for the VAMOS signal, but the adjacent frequency interference is stronger; the Narrow filtering method has poorer reception performance than the Wider filtering method, but the anti-adjacent frequency interference capability is strong.
  • the network side device or terminal statically selects the filtering mode, works according to the selected filtering mode, and keeps the filtering mode unchanged during the working process.
  • aspects of the present invention provide a processing method and apparatus for a filtering method in a communication system, thereby improving flexibility of a filtering method.
  • An aspect of the present invention discloses a processing method of a filtering method in a communication system, which includes: acquiring an interference performance parameter; determining a filtering mode according to the interference performance parameter; and switching to the filtering mode.
  • Another aspect of the present invention discloses a processing device for filtering in a communication system, comprising: an interference performance parameter acquisition module, configured to acquire an interference performance parameter; and a filtering mode determining module, configured to determine a filter according to the interference performance parameter Mode; a filtering mode switching module, configured to switch to the filtering mode.
  • FIG. 1 is a flowchart of a method according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method according to another embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a device according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a terminal according to another embodiment of the present invention.
  • GSM Global System for Mobile Communications
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency-Division Multiple Access
  • SC-FDMA single carrier FDMA
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • the terminal may be a wireless terminal or a wired terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem.
  • the wireless terminal can be accessed via a wireless access network (eg, RAN, Radio) Access Network) communicating with one or more core networks, which may be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket, handheld, Computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • a wireless access network eg, RAN, Radio) Access Network
  • core networks which may be mobile terminals, such as mobile phones (or "cellular" phones) and computers with mobile terminals, for example, portable, pocket, handheld, Computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network.
  • a wireless terminal can also be called a system, a subscriber unit (Subscriber Unit), Subscriber Station, Mobile Station, Mobile, Remote Station (Remote) Station), access point (Access Point), remote terminal (Remote Terminal), access terminal (Access) Terminal), User Terminal, User Agent, User Device, or User Equipment (User) Equipment).
  • Subscriber Unit Subscriber Station
  • Mobile Station Mobile, Remote Station (Remote) Station
  • Access Point Access Point
  • Remote Terminal Remote Terminal
  • Access Terminal Access Terminal
  • User Terminal User Agent
  • User Device User Equipment
  • User Equipment User Equipment
  • a base station can refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station can be a base station in GSM or CDMA (BTS, Base) Transceiver Station), which may also be a base station (NodeB) in WCDMA, or an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
  • Base station controller which may be a base station controller in GSM or CDMA (BSC, base station
  • the controller may be a radio network controller (RNC) in WCDMA, and the present invention is not limited thereto.
  • RNC radio network controller
  • system and “network” are used interchangeably herein.
  • the term “and/or” in this context is merely an association describing the associated object, indicating that there may be three relationships, for example, A and / or B, which may indicate that A exists separately, and both A and B exist, respectively. B these three situations.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the embodiment of the invention provides a method for determining a filtering mode in a communication system, and the processing procedure thereof is as shown in FIG. 1 .
  • the interference performance parameter is used to describe interference to a communication signal, such as adjacent frequency interference, co-channel interference, signal to noise ratio, and the like;
  • the method provided by the embodiment of the present invention can dynamically switch the filtering mode according to the actual interference situation, so as to simultaneously consider the receiving performance and the interference situation, and improve the flexibility of the filtering mode determination.
  • the method provided by the embodiment of the present invention can be applied to a base station or a terminal.
  • the specific implementation manner of the foregoing S101 may be: the base station obtains the interference parameter of the cell, by way of example and not limitation, specifically, the neighboring frequency interference of the cell and the co-frequency interference of the cell may be acquired; for example, the foregoing interference performance parameter includes: adjacent channel interference of the cell Co-channel interference with the cell.
  • the specific implementation manner of the foregoing S102 may be: when the predetermined condition is met, the base station acquires the interference performance parameter obtained in the predetermined time period, and obtains the average interference performance parameter in the predetermined time period; the base station compares the average interference performance parameter with the predetermined interference.
  • the thresholds are compared, and one of the at least two filtering methods set in advance is selected according to the comparison result.
  • an appropriate threshold and a filtering mode selection strategy are determined. For example, if two or more filtering modes are set in advance, the number of interference thresholds may be the number of filtering modes -1.
  • the number of interference thresholds is 2 (first threshold ⁇ second threshold)
  • the corresponding relationship may be: when the comparison result is less than the first threshold, the first filtering mode is selected (the anti-interference ability is from the largest to the smallest: the third filtering mode, the second filtering mode, and the first filtering mode, and the receiving performance is determined by The order of the big to the small is: the first filtering mode, the second filtering mode, and the third filtering mode.
  • the comparison result is between the first threshold and the second threshold
  • the second filtering mode is selected, when the comparison result is greater than the second threshold.
  • the third filtering mode is selected.
  • the specific implementation manner of obtaining the average interference performance parameter may be, but is not limited to, the base station acquiring the co-channel interference and the cell of the cell from the start time of the current cycle (the predetermined condition is the start time of each cycle).
  • the adjacent channel interference, the acquired action continues until the current period cut-off time or a certain time before, and the average interference performance parameter in this time period is obtained.
  • the specific implementation manner of the foregoing S101 may be: the terminal processes the received signal by using a pre-configured filtering manner, and obtains an interference performance parameter corresponding to each filtering mode, where the interference performance parameter includes a signal to noise ratio.
  • the specific implementation manner of the foregoing S102 may be: the terminal selects a filtering mode with a maximum signal to noise ratio.
  • the base station and the terminal independently determine respective filtering modes.
  • the Narrow filtering method and the Wider filtering method as an example, when the filtering methods determined by the two parties are different, in the case where the interference is small, the end of the Narrow filtering mode may not receive the useful signal outside the processing band, thereby reducing the receiving performance; When the interference is large, the end of the Wider filtering mode may filter the out-of-band interference, which also affects the receiving performance.
  • the method provided by the embodiment of the present invention further includes: the base station transmitting, to the terminal, the information that is determined by the base station and includes the filtering mode.
  • the terminal sends the information including the filtering mode determined by the terminal to the base station.
  • the specific implementation manner in which the base station sends the information including the filtering mode to the terminal may be as follows.
  • the base station sends the handover signaling to the terminal during the handover process, and carries the information including the filtering mode determined by the base station in the handover signaling.
  • the base station when assigning a channel to a terminal, the base station sends an assignment message to the terminal, and carries the information including the filtering mode determined by the base station in the assignment message.
  • the base station sends a system broadcast message to the terminal, and carries information including the filtering mode determined by the base station in the system broadcast message.
  • the base station may carry the information including the filtering mode in the system broadcast message sent on the BCCH channel, or may carry the information including the filtering mode in the system broadcast message sent on the SACCH channel.
  • the base station can switch to the Narrow filtering mode, and notify the filtering mode information of each terminal after the system broadcast message, so that each terminal also switches to the Narrow filtering mode to improve anti-interference. ability.
  • the base station can switch to the Wider filtering mode, and notify the filtering mode information of each terminal after the system broadcast message, so that each terminal also switches to the Wider filtering mode to improve the receiving performance.
  • the terminal receives the information including the filtering mode sent by the base station; and switches the filtering mode according to the received information including the filtering mode.
  • a specific implementation manner in which the terminal sends the information including the filtering manner to the base station may be as follows.
  • the terminal sends a handover access message to the base station, and carries the information including the filtering mode determined by the terminal in the handover access message;
  • the terminal when assigning a channel to a terminal, the terminal sends an assignment completion message to the base station, and carries the information including the filtering mode determined by the terminal in the assignment completion message.
  • the specific implementation manner of determining the filtering mode by the base station may be: receiving the information including the filtering mode sent by the terminal; and including according to the received Filtering information, and interference performance parameters, determine the filtering method.
  • the base station After the foregoing method determines the filtering mode, the base station sends the determined information including the filtering mode to the terminal, so that the terminal switches the filtering mode to be consistent with the base station side, thereby improving the receiving performance. If the terminal determines the filtering mode in an adaptive manner, the determined information including the filtering mode is sent to the base station, so that when determining the filtering mode, the base station can refer to the filtering mode determined by the terminal side, thereby improving the receiving performance.
  • the method provided by the embodiment of the present invention can be applied to any communication system with multiple filtering modes.
  • the following two application embodiments take the VAMOS system as an example to implement the specific implementation manner in the actual application process of the embodiment of the present invention. Detailed explanation.
  • the base station uses the Wider filtering method by default. In order to balance the receiving performance and anti-interference ability, it is necessary to grasp the interference performance parameters in real time in order to dynamically switch the filtering method.
  • the corresponding processing is shown in Figure 2, and the specific implementation is as follows.
  • the base station measures and records adjacent channel interference and co-channel interference of the current cell.
  • the base station calculates an average of adjacent frequency interferences in the current period and an average value of the same frequency interference.
  • the time when the GSM is in the SACCH decoding is to analyze the measurement result is a measurement report period, and the measurement report statistics are performed every 480 ms.
  • the base station compares the mean value of the adjacent frequency interference and the mean value of the same frequency interference with the interference threshold value -100dbm in the last measurement reporting period of each period. If the mean value of the adjacent frequency interference and the mean value of the same frequency interference are less than -100dbm, then The Wider filtering mode is still adopted (if the current filtering mode is Narrow filtering mode, the mode is switched to the Wider filtering mode), otherwise, S204 is executed.
  • the base station compares the mean value of the adjacent frequency interference with the mean value of the same frequency interference. If the mean value of the adjacent frequency interference is greater than or equal to the mean value of the same frequency interference, the method switches to the Narrow filtering mode. (If the current filtering mode is the Narrow filtering mode, the Narrow filtering is still used. Mode) Otherwise, the Wider filtering mode is still used (if the current filtering mode is Narrow filtering mode, it switches to the Wider filtering mode).
  • the selection of the period length and the size of the interference threshold can be configured according to actual conditions.
  • the filtering mode of the base station may be determined according to the received information including the filtering mode.
  • the method may further include S204a: The received information including the filtering mode is used for statistics. If the ratio of the number of terminals using a certain filtering method to the total number of current terminals of the cell exceeds a predetermined value, the base station selects the filtering mode. Otherwise, S204 is performed.
  • the foregoing process may further include: S205.
  • the base station sends the determined information including the filtering mode to the terminal.
  • the specific implementation manner of the terminal adaptive switching filtering mode is shown in FIG. 3, and the processing procedure is as follows.
  • the terminal uses the Narrow filtering method and the Wider filtering method to perform channel estimation on the received signal, respectively calculating the signal-to-noise ratio of the burst and accumulating.
  • burst is a burst of air, used to transmit the above received signal.
  • the terminal After accumulating 500 SNRs, the terminal calculates the SNR average value, specifically, dividing the accumulated result of the SNR by 500 to obtain the SNR average value.
  • S303 The terminal selects a filtering method with the largest SNR value to perform filtering processing, and separately clears the accumulated SNR of the two filtering modes.
  • All or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to the program instructions.
  • the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments;
  • the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
  • the embodiment of the present invention further provides a processing device for filtering in a communication system, and the structure thereof is as shown in FIG. 4, and the processing device of the filtering method in the communication system may be a base station, a terminal, or a base station or The processing device of the filtering mode in the communication system may include: an interference performance parameter obtaining module 401, a filtering mode determining module 402, and a filtering mode switching module 403.
  • the interference performance parameter obtaining module 401 is configured to obtain an interference performance parameter, where the interference performance parameter is used to describe interference to a communication signal, such as adjacent frequency interference, co-channel interference, signal to noise ratio, and the like.
  • the filtering mode determining module 402 is configured to determine a filtering mode according to the foregoing interference performance parameter.
  • the filtering mode switching module 403 is configured to switch to the filtering mode.
  • the device provided by the embodiment of the invention can dynamically switch the filtering mode according to the actual interference situation, so as to simultaneously consider the receiving performance and the interference situation, and improve the flexibility of the filtering mode determination.
  • the base station and the terminal independently determine respective filtering modes.
  • the Narrow filtering method and the Wider filtering method as an example, when the filtering methods determined by the two parties are different, in the case where the interference is small, the end of the Narrow filtering mode may not receive the useful signal outside the processing band, thereby reducing the receiving performance; When the interference is large, the end of the Wider filtering mode may filter the out-of-band interference, which also affects the receiving performance.
  • the apparatus provided by the embodiment of the present invention further includes a filtering mode notification module 404, configured to send the information including the filtering mode.
  • the device provided by the embodiment of the present invention may be disposed at a base station or at a terminal side.
  • the filtering mode determining module 402 is specifically configured to: when the predetermined condition is met, acquire an interference performance parameter in a predetermined time period, and obtain the The average interference performance parameter is within a predetermined time period; the average interference performance parameter is compared with a predetermined interference threshold, and one of the at least two filtering modes set in advance is selected according to the comparison result.
  • the interference performance parameters include: adjacent frequency interference and co-channel interference of the cell.
  • the information including the filtering mode sent by the filtering mode notification module 404 may be carried in the handover signaling sent by the base station to the terminal; or the information including the filtering mode is carried in the base station to the And the information including the filtering mode is carried in a system broadcast message sent by the base station to the terminal.
  • the apparatus provided by the embodiment of the present invention is configured in a base station, and the terminal adaptively determines the filtering mode
  • the apparatus provided by the embodiment of the present invention further includes a receiving module 405, configured to receive information including a filtering manner sent by the terminal.
  • the filtering mode determining module 402 is specifically configured to: determine the filtering mode according to the received information including the filtering mode and the interference performance parameter.
  • the interference performance parameter obtaining module 401 is specifically configured to: process the received signal by using a pre-configured filtering manner, and obtain corresponding filtering manners. Interference performance parameters, the interference performance parameters including signal to noise ratio.
  • the filtering mode determining module 402 is specifically configured to: select a filtering mode with a maximum signal to noise ratio.
  • the terminal may adaptively select a filtering mode.
  • the terminal of the device provided by the embodiment of the present invention is set as an example, and the structure of the terminal is as shown in FIG. 5 , and the specific implementation structure is as follows.
  • a linear Gaussian filter 501 for performing Narrow filtering on the input signal
  • the first training sequence channel estimation module 502 is connected to the linear Gaussian filter 501 for processing the output value of the linear Gaussian filter 501 to obtain a signal to noise ratio in the Narrow filtering mode;
  • the first smoothing processing module 503 is connected to the first training sequence channel estimation module 502, and configured to perform smoothing processing on the signal to noise ratio.
  • the second training sequence channel estimation module 505 is connected to the RRC pulse shaping filter 504 for processing the output value of the RRC pulse shaping filter 504 to obtain a signal to noise ratio in the Wider filtering mode.
  • the second smoothing processing module 506 is connected to the second training sequence channel estimation module 505 for smoothing the signal to noise ratio.
  • the comparison decision module 507 is connected to the first smoothing processing module 503 and the second smoothing processing module 506, respectively, for comparing the output values of the two modules, and selecting a filtering manner according to the comparison result;
  • the filtering mode switching module 508 is connected to the comparison decision module 507 for switching the filtering mode according to the selection result of the comparison decision module 507.
  • the first training sequence channel estimation module 502, the first smoothing processing module 503, the second training sequence channel estimation module 505, and the second smoothing processing module 506 implement the functions of the parameter obtaining module 401.
  • the comparison decision module 507 implements the functions of the filtering mode determination module 402 described above.
  • the filtering mode switching module 508 implements the functions of the filtering mode switching module 403 described above. When the filtering mode switching module 508 selects the filtering mode, the filter corresponding to the selected filtering mode (linear Gaussian filter 501) The RRC pulse shaping filter 504) performs a filtering operation.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • the technical solution of the present invention which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM, Read-Only) Memory, random access memory (RAM), disk or optical disk, and other media that can store program code.

Abstract

本发明公开一种通信系统中滤波方式的处理方法，所述方法包括：获取干扰性能参数；根据所述干扰性能参数确定滤波方式；切换到所述滤波方式。本发明还公开一种通信系统中滤波方式的处理装置。由于可以在工作过程中，根据实际的干扰情况动态切换滤波方式，因此提高了滤波方式的灵活性，进而提高了系统的接收性能。

Description

一种通信系统中滤波方式的处理方法及装置
技术领域
本发明实施例涉及无线通信技术领域，尤其涉及一种通信系统中滤波方式的处理方法及装置。
发明背景
在应用VAMOS（Voice services over Adaptive Multi-user channels on one Slot，基于自适应的多用户复用一时隙语音业务）技术的通信系统中，存在两种滤波方式。一种是使用RRC（Root Raised Cosine，均方根升余弦）脉冲成形滤波器的Wider（宽的）滤波方式，一种是使用Linear GMSK（Linear Gaussian-filtered Minimum Shift Keying，线性高斯最小频移键控）成形滤波器的Narrow（窄的）滤波方式。其中，Wider滤波方式针对VAMOS信号具有较好的接收性能，但邻频干扰较强；Narrow滤波方式较之Wider滤波方式接收性能差，但抗邻频干扰能力较强。VAMOS通信系统中，网络侧设备或终端静态地选择滤波方式，按照选择的滤波方式进行工作，且在工作过程中保持滤波方式不变。
发明人在实现本发明的过程中，发现现有技术中所采用的滤波方式，其灵活性较差。
发明内容
本发明的各个方面提供了一种通信系统中滤波方式的处理方法和装置，从而提高滤波方式的灵活性。
本发明的一方面公开一种通信系统中滤波方式的处理方法，其中，包括：获取干扰性能参数；根据所述干扰性能参数确定滤波方式；切换到所述滤波方式。
本发明的另一方面公开一种通信系统中滤波方式的处理装置，其中，包括：干扰性能参数获取模块，用于获取干扰性能参数；滤波方式确定模块，用于根据所述干扰性能参数确定滤波方式；滤波方式切换模块，用于切换到所述滤波方式。
由上述技术方案可以看出，可以提高滤波方式的灵活性，进而提高系统的接收性能。
附图简要说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的方法流程图；
图2为本发明一实施例提供的方法流程图；
图3为本发明另一实施例提供的方法流程图；
图4为本发明另一实施例提供的装置结构示意图；
图5为本发明另一实施例提供的终端结构示意图。
实施本发明的方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本文中描述的各种技术可用于各种无线通信系统，例如当前2G，3G通信系统和下一代通信系统，例如全球移动通信系统（GSM，Global System for Mobile communications），码分多址（CDMA，Code Division Multiple Access）系统，时分多址（TDMA，Time Division Multiple Access）系统，宽带码分多址（WCDMA，Wideband Code Division Multiple Access Wireless），频分多址（FDMA，Frequency Division Multiple Addressing）系统，正交频分多址（OFDMA，Orthogonal Frequency-Division Multiple Access）系统，单载波FDMA（SC-FDMA）系统，通用分组无线业务（GPRS，General Packet Radio Service）系统，长期演进（LTE，Long Term Evolution）系统，以及其他此类通信系统。
本文中结合终端和/或基站和/或基站控制器来描述各种方面。
终端，可以是无线终端也可以是有线终端，无线终端可以是指向用户提供语音和/或数据连通性的设备，具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网（例如，RAN，Radio Access Network）与一个或多个核心网进行通信，无线终端可以是移动终端，如移动电话（或称为“蜂窝”电话）和具有移动终端的计算机，例如，可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语言和/或数据。例如，个人通信业务（PCS，Personal Communication Service）电话、无绳电话、会话发起协议（SIP）话机、无线本地环路（WLL，Wireless Local Loop）站、个人数字助理（PDA，Personal Digital Assistant）等设备。无线终端也可以称为系统、订户单元（Subscriber Unit）、订户站（Subscriber Station），移动站（Mobile Station）、移动台（Mobile）、远程站（Remote Station）、接入点（Access Point）、远程终端（Remote Terminal）、接入终端（Access Terminal）、用户终端（User Terminal）、用户代理（User Agent）、用户设备（User Device）、或用户装备（User Equipment）。
基站（例如，接入点）可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换，作为无线终端与接入网的其余部分之间的路由器，其中接入网的其余部分可包括网际协议（IP）网络。基站还可协调对空中接口的属性管理。例如，基站可以是GSM或CDMA中的基站（BTS，Base Transceiver Station），也可以是WCDMA中的基站（NodeB），还可以是LTE中的演进型基站（NodeB或eNB或e-NodeB，evolutional Node B），本发明并不限定。
基站控制器，可以是GSM或CDMA中的基站控制器（BSC，base station controller），也可以是WCDMA中的无线网络控制器（RNC，Radio Network Controller），本发明并不限定。
另外，本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本发明实施例提供一种通信系统中滤波方式的确定方法，其处理过程如图1所示。
S101、获取干扰性能参数。
该干扰性能参数用来描述对通信信号的干扰，例如邻频干扰、同频干扰、信噪比等等；
S102、根据上述干扰性能参数确定滤波方式。
在通信信号处理过程中，通常希望增加带宽以获取更好的接收性能，但由于干扰的制约，不可能无限地扩大带宽，因此，需要根据获取的干扰性能参数，确定一种滤波方式，以便在降低干扰的前提下，获得更好的接收性能。
S103、切换到确定的滤波方式。
本发明实施例提供的方法，由于可以根据实际的干扰情况，动态切换滤波方式，以同时兼顾接收性能和干扰情况，提高了滤波方式确定的灵活性。
本发明实施例提供的方法既可以应用在基站上，也可以应用在终端上。
当基站应用上述本发明实施例提供的方法，可以如下所述。
上述S101的具体实现方式可以是：基站获得小区的干扰参数，作为举例而非限定，具体可以获取小区的邻频干扰和小区的同频干扰；例如，上述干扰性能参数包括：小区的邻频干扰和小区的同频干扰。
上述S102的具体实现方式可以是：当满足预定条件时，基站获取预定时间段内获得的干扰性能参数，并得到该预定时间段内平均干扰性能参数；基站将该平均干扰性能参数与预定的干扰阈值进行比较，并根据比较结果，从预先设置的至少两个滤波方式中选择一个。其中，根据各个滤波方式的接收性能、抗干扰能力，以及实际的通信质量要求，确定合适的阈值以及滤波方式选择策略。例如，如果预先设置了两个以上的滤波方式，干扰阈值的数量可以是滤波方式的数量-1，以三种滤波方式为例，则干扰阈值的数量为2（第一阈值<第二阈值），其对应关系可以是：当比较结果小于第一阈值时，选择第一滤波方式（抗干扰能力由大到小依次是：第三滤波方式、第二滤波方式、第一滤波方式，接收性能由大到小依次是：第一滤波方式、第二滤波方式、第三滤波方式），当比较结果在第一阈值与第二阈值之间时，选择第二滤波方式，当比较结果大于第二阈值时，选择第三滤波方式。如果S102是周期性执行的，则获取平均干扰性能参数的具体实现方式可以但不仅限于：在当前周期开始时刻起（预定条件为每周期的起始时刻），基站获取小区的同频干扰和小区的邻频干扰，获取的动作持续到当前周期截止时刻或之前的某一时刻，获取这一时间段内平均干扰性能参数。
当终端应用上述本发明实施例提供的方法时，可以如下所述。
上述S101的具体实现方式可以是：终端分别采用预先配置的滤波方式对接收信号进行处理，得到各个滤波方式对应的干扰性能参数，该干扰性能参数包括信噪比。
相应的，上述S102的具体实现方式可以是：终端选择信噪比最大的滤波方式。
现有技术中，基站和终端分别独立的确定各自的滤波方式。以Narrow滤波方式和Wider滤波方式为例，当双方确定的滤波方式不同时，在干扰较小的情况下，选择Narrow滤波方式的一端可能无法接收处理带外的有用信号，降低了接收性能；在干扰较大的情况下，选择Wider滤波方式的一端可能将带外干扰进行滤波处理，同样影响接收性能。为了解决这一问题，本发明实施例提供的方法还包括：基站向终端发送基站确定的包括滤波方式的信息。
终端向基站发送终端确定的包括滤波方式的信息。
其中，基站向终端发送包括滤波方式的信息的具体实现方式可以如下所述。
本发明的另一实施例中，在终端切换过程中，基站向终端发送切换信令，并在该切换信令中携带基站确定的包括滤波方式的信息。
本发明的另一实施例中，在为终端指派信道时，基站向终端发送指派消息，并在该指派消息中携带基站确定的包括滤波方式的信息。
本发明的另一实施例中，基站向终端发送系统广播消息，并在该系统广播消息中携带基站确定的包括滤波方式的信息。其中，基站具体可以在BCCH信道上发送的系统广播消息中携带包括滤波方式的信息，也可以在SACCH信道上发送的系统广播消息中携带包括滤波方式的信息。当小区内的负载量突然暴增时，干扰增加，基站可以切换到Narrow滤波方式，并通过系统广播消息通知各个终端切换后的滤波方式信息，使得各个终端也切换到Narrow滤波方式，提高抗干扰能力。当小区内的负载量突然暴增时，干扰增加，基站可以切换到Wider滤波方式，并通过系统广播消息通知各个终端切换后的滤波方式信息，使得各个终端也切换到Wider滤波方式，提高接收性能。
例如，终端接收基站发来的包括滤波方式的信息；并按照接收到的包括滤波方式的信息切换滤波方式。
终端向基站发送包括滤波方式的信息的具体实现方式可以如下所述。
在终端切换过程中，终端向基站发送切换接入消息，并在该切换接入消息中携带终端确定的包括滤波方式的信息；
本发明的另一实施例中，在为终端指派信道时，终端向基站发送指派完成消息，并在该指派完成消息中携带终端确定的包括滤波方式的信息。
本发明的另一实施例中，当终端向基站发送了包括滤波方式的信息后，基站确定滤波方式的具体实现方式可以是：接收终端发来的包括滤波方式的信息；并根据接收到的包括滤波方式的信息，和干扰性能参数，确定滤波方式。
通过上述处理过程，基站确定了滤波方式后，会将确定的包括滤波方式的信息发送给终端，以便终端将滤波方式切换到与基站侧一致，从而提高接收性能。终端如果采用自适应的方式确定滤波方式，会将确定的包括滤波方式的信息发送给基站，以便基站在确定滤波方式的时候，可以参考终端侧确定的滤波方式，进而提高接收性能。
本发明实施例提供的方法可以应用到任何有多种滤波方式选择的通信系统中，下面的两个应用实施例将以VAMOS系统为例，对本发明实施例在实际应用过程中的具体实现方式进行详细的说明。
为了获得较好的链路性能，基站默认采用Wider滤波方式。为了兼顾接收性能和抗干扰能力，需要实时掌握干扰性能参数，以便动态的切换滤波方式。相应的处理过程如图2所示，具体实现方式如下。
S201、基站测量并记录本小区的邻频干扰和同频干扰。
S202、以50个测量报告周期为周期，基站计算本周期内的邻频干扰均值，以及同频干扰均值。
其中，GSM在SACCH译码是解析测量结果的时间为一个测量报告周期，既每480ms进行一次测量报告统计。
S203、基站在每个周期的最后一个测量报告周期内，分别将邻频干扰均值和同频干扰均值与干扰阈值-100dbm进行比较，如果邻频干扰均值和同频干扰均值都小于-100dbm，则仍然采用Wider滤波方式（如果当前滤波方式为Narrow滤波方式，则切换到Wider滤波方式），否则，执行S204。
S204、基站比较邻频干扰均值与同频干扰均值的大小，如果邻频干扰均值大于或等于同频干扰均值，则切换到Narrow滤波方式（如果当前滤波方式为Narrow滤波方式，则仍然采用Narrow滤波方式），否则，仍然采用Wider滤波方式（如果当前滤波方式为Narrow滤波方式，则切换到Wider滤波方式）。
上述处理过程中，周期长度的选择，以及干扰阈值的大小可以根据实际情况配置。
另外，如果基站接收到终端发来的包括滤波方式的信息，还可以结合接收到的包括滤波方式的信息确定基站的滤波方式，相应的，在S203与S204之间，还可以包括S204a：基站对接收到的包括滤波方式的信息进行统计，如果采用某种滤波方式的终端数量与小区当前终端总数量的比值超过预定值，则基站选择该滤波方式，否则，执行S204。
如果基站没有接收到终端发来的包括滤波方式的信息，上述处理过程还可以包括S205、基站将确定的包括滤波方式的信息发送给终端。
VAMOS系统中，终端自适应切换滤波方式的具体实现方式如图3所示，其处理过程如下。
S301、终端分别采用Narrow滤波方式和Wider滤波方式对接收信号进行信道估计，分别计算burst的信噪比并累加。
其中，burst为空口的一个突发脉冲，用来传输上述接收信号。
S302、终端在累加500个信噪比后，分别计算信噪比均值，具体是用信噪比的累加结果除以500得到信噪比均值。
S303、终端选择信噪比均值最大的滤波方式进行滤波处理，并分别清空两种滤波方式对应的累加信噪比。
实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
本发明实施例还提供了一种通信系统中滤波方式的处理装置，其结构如图4所示，所述通信系统中滤波方式的处理装置可以为基站，也可以为终端，也可以是基站或终端的一部分，所述通信系统中滤波方式的处理装置可以包括：干扰性能参数获取模块401，滤波方式确定模块402和滤波方式切换模块403。
干扰性能参数获取模块401，用于获取干扰性能参数，该干扰性能参数用来描述对通信信号的干扰，例如邻频干扰、同频干扰、信噪比等等。
滤波方式确定模块402，用于根据上述干扰性能参数确定滤波方式。
滤波方式切换模块403，用于切换到上述滤波方式。
本发明实施例提供的装置，由于可以根据实际的干扰情况，动态切换滤波方式，以同时兼顾接收性能和干扰情况，提高了滤波方式确定的灵活性。
现有技术中，基站和终端分别独立的确定各自的滤波方式。以Narrow滤波方式和Wider滤波方式为例，当双方确定的滤波方式不同时，在干扰较小的情况下，选择Narrow滤波方式的一端可能无法接收处理带外的有用信号，降低了接收性能；在干扰较大的情况下，选择Wider滤波方式的一端可能将带外干扰进行滤波处理，同样影响接收性能。为了解决这一问题，本发明实施例提供的装置还包括滤波方式告知模块404，用于发送所述包括滤波方式的信息。
本发明实施例提供的装置可以设置在基站，也可以设置在终端侧。
如果本发明实施例提供的装置设置在基站，且基站确定滤波方式，则上述滤波方式确定模块402，具体用于：当满足预定条件时，获取预定时间段内的干扰性能参数，并得到所述预定时间段内平均干扰性能参数；将所述平均干扰性能参数与预定的干扰阈值进行比较，并根据比较结果，从预先设置的至少两个滤波方式中选择一个。所述干扰性能参数包括：小区的邻频干扰和同频干扰。相应的，上述滤波方式告知模块404发送的包括滤波方式的信息可以携带在所述基站向所述终端发送的切换信令中；或者，所述包括滤波方式的信息携带在所述基站向所述终端发送的指派消息中；或者，所述包括滤波方式的信息携带在所述基站向所述终端发送的系统广播消息中。
如果本发明实施例提供的装置设置在基站，且终端自适应确定滤波方式，则本发明实施例提供的装置还包括接收模块405，用于接收终端发来的包括滤波方式的信息。相应的，上述滤波方式确定模块402具体用于：根据接收到的包括滤波方式的信息，和所述干扰性能参数，确定滤波方式。
如果本发明实施例提供的装置设置在基站，且终端自适应确定滤波方式，则上述干扰性能参数获取模块401具体用于：采用预先配置的滤波方式对接收信号进行处理，得到各个滤波方式对应的干扰性能参数，所述干扰性能参数包括信噪比。相应的，上述滤波方式确定模块402具体用于：选择信噪比最大的滤波方式。
如果本发明实施例提供的装置设置在终端侧，则终端可以自适应选择滤波方式。以VAMOS系统中，设置本发明实施例提供的装置的终端为例，该终端的结构如图5所示，具体实现结构如下。
线性高斯滤波器501，用于对输入信号进行Narrow滤波；
第一训练序列信道估计模块502，与线性高斯滤波器501连接，用于对线性高斯滤波器501的输出值进行处理，获取在Narrow滤波方式下的信噪比；
第一平滑处理模块503，与第一训练序列信道估计模块502连接，用于对上述信噪比进行平滑处理；
RRC脉冲成形滤波器504，用于对输入信号进行Wider滤波；
第二训练序列信道估计模块505，与RRC脉冲成形滤波器504连接，用于对RRC脉冲成形滤波器504的输出值进行处理，获取在Wider滤波方式下的信噪比；
第二平滑处理模块506，与第二训练序列信道估计模块505连接，用于对上述信噪比进行平滑处理；
比较判决模块507，分别与第一平滑处理模块503和第二平滑处理模块506连接，用于对这两个模块的输出值进行比较，并根据比较结果选择滤波方式；
滤波方式切换模块508，与比较判决模块507连接，用于根据比较判决模块507的选择结果切换滤波方式。
其中，第一训练序列信道估计模块502、第一平滑处理模块503、第二训练序列信道估计模块505和第二平滑处理模块506实现上述参数获取模块401的功能。比较判决模块507实现上述滤波方式确定模块402的功能。滤波方式切换模块508实现上述滤波方式切换模块403的功能。当滤波方式切换模块508选择了滤波方式，被选择的滤波方式对应的滤波器（线性高斯滤波器501 RRC脉冲成形滤波器504）执行滤波操作。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备（可以是个人计算机，服务器，或者网络设备等）执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器（ROM，Read-Only Memory）、随机存取存储器（RAM，Random Access Memory）、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (21)

  1. 一种通信系统中滤波方式的处理方法，其特征在于，包括：
    获取干扰性能参数；
    根据所述干扰性能参数确定滤波方式；
    切换到所述滤波方式。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述干扰性能参数确定滤波方式包括：
    当满足预定条件时，基站获取预定时间段内的干扰性能参数，并得到所述预定时间段内平均干扰性能参数；
    所述基站将所述平均干扰性能参数与预定的干扰阈值进行比较，并根据比较结果，从预先设置的至少两个滤波方式中选择一个。
  3. 根据权利要求1所述的方法，其特征在于，该方法还包括：
    所述基站向终端发送所述包括滤波方式的信息。
  4. 根据权利要求3所述的方法，其特征在于，所述基站向终端发送包括滤波方式的信息包括：
    所述基站向所述终端发送切换信令，在所述切换信令中携带所述包括滤波方式的信息；
    或者，
    所述基站向所述终端发送指派消息，在所述指派消息中携带所述包括滤波方式的信息；
    或者，
    所述基站向所述终端发送系统广播消息，在所述系统广播消息中携带所述包括滤波方式的信息。
  5. 根据权利要求1所述的方法，其特征在于，所述根据所述干扰性能参数确定滤波方式包括：
    所述基站接收终端发来的包括滤波方式的信息；
    所述基站根据接收到的包括滤波方式的信息，和所述干扰性能参数，确定滤波方式。
  6. 根据权利要求1-5任意一项所述的方法，其特征在于，所述干扰性能参数包括：小区的邻频干扰和同频干扰。
  7. 根据权利要求1所述的方法，其特征在于，所述获取干扰性能参数包括：
    终端采用预先配置的滤波方式对接收信号进行处理，得到各个滤波方式对应的干扰性能参数，所述干扰性能参数包括信噪比。
  8. 根据权利要求7所述的方法，所述根据所述干扰性能参数确定滤波方式包括：
    所述终端选择信噪比最大的滤波方式。
  9. 根据权利要求7或8所述的方法，其特征在于，该方法还包括：
    所述终端向基站发送所述包括滤波方式的信息。
  10. 根据权利要求7或8所述的方法，其特征在于，该方法还包括：
    所述终端接收基站发来的包括滤波方式的信息；
    所述终端按照所述包括滤波方式的信息切换滤波方式。
  11. 一种通信系统中滤波方式的处理装置，其特征在于，包括：
    干扰性能参数获取模块，用于获取干扰性能参数；
    滤波方式确定模块，用于根据所述干扰性能参数确定滤波方式；
    滤波方式切换模块，用于切换到所述滤波方式。
  12. 根据权利要求11所述的装置，其特征在于，所述滤波方式确定模块，具体用于：当满足预定条件时，获取预定时间段内的干扰性能参数，并得到所述预定时间段内平均干扰性能参数；将所述平均干扰性能参数与预定的干扰阈值进行比较，并根据比较结果，从预先设置的至少两个滤波方式中选择一个。
  13. 根据权利要求11所述的装置，其特征在于，该装置还包括滤波方式告知模块，用于发送所述包括滤波方式的信息。
  14. 根据权利要求13所述的装置，其特征在于，所述包括滤波方式的信息携带在所述基站向所述终端发送的切换信令中；或者，所述包括滤波方式的信息携带在所述基站向所述终端发送的指派消息中；或者，所述包括滤波方式的信息携带在所述基站向所述终端发送的系统广播消息中。
  15. 根据权利要求11所述的装置，其特征在于，所述装置还包括：接收模块，用于接收终端发来的包括滤波方式的信息；
    所述滤波方式确定模块具体用于：根据接收到的包括滤波方式的信息，和所述干扰性能参数，确定滤波方式。
  16. 根据权利要求11-15任意一项所述的装置，其特征在于，所述干扰性能参数包括：小区的邻频干扰和同频干扰。
  17. 根据权利要求11所述的装置，其特征在于，所述干扰性能参数获取模块具体用于：采用预先配置的滤波方式对接收信号进行处理时，得到各个滤波方式对应的干扰性能参数，所述干扰性能参数包括信噪比。
  18. 根据权利要求17所述的装置，所述滤波方式确定模块具体用于：选择信噪比最大的滤波方式。
  19. 根据权利要求17所述的装置，其特征在于，所述装置还包括：
    线性高斯滤波器，用于对接收信号进行窄的Narrow滤波；
    均方根升余弦RRC脉冲成形滤波器，用于对接收信号进行宽的Wider滤波。
  20. 根据权利要求19所述的装置，其特征在于，所述干扰性能参数获取模块具体包括：
    第一训练序列信道估计模块，与所述线性高斯滤波器连接，用于对所述线性高斯滤波器的输出值进行处理，获取在Narrow滤波方式下的信噪比；
    第一平滑处理模块，与所述第一训练序列信道估计模块连接，用于对所述信噪比进行平滑处理；
    第二训练序列信道估计模块，与所述RRC脉冲成形滤波器连接，用于对所述RRC脉冲成形滤波器的输出值进行处理，获取在Wider滤波方式下的信噪比；
    第二平滑处理模块，与所述第二训练序列信道估计模块连接，用于对所述信噪比进行平滑处理。
  21. 根据权利要求20所述的装置，其特征在于，所述滤波方式确定模块由比较判决模块构成，所述比较判决模块分别与所述第一平滑处理模块和所述第二平滑处理模块连接，用于对所述第一平滑处理模块和所述第二平滑处理模块的输出值进行比较，并根据比较结果选择滤波方式。
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CN101242626A (zh) * 2007-02-09 2008-08-13 捷讯研究有限公司 对接收信号进行滤波的设备及方法
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