WO2015018042A1 - 小区干扰协调方法、基站和终端 - Google Patents

小区干扰协调方法、基站和终端 Download PDF

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Publication number
WO2015018042A1
WO2015018042A1 PCT/CN2013/081110 CN2013081110W WO2015018042A1 WO 2015018042 A1 WO2015018042 A1 WO 2015018042A1 CN 2013081110 W CN2013081110 W CN 2013081110W WO 2015018042 A1 WO2015018042 A1 WO 2015018042A1
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WIPO (PCT)
Prior art keywords
base station
wake
request
terminal
state
Prior art date
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PCT/CN2013/081110
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English (en)
French (fr)
Inventor
董贤东
Original Assignee
东莞宇龙通信科技有限公司
宇龙计算机通信科技(深圳)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 东莞宇龙通信科技有限公司, 宇龙计算机通信科技(深圳)有限公司 filed Critical 东莞宇龙通信科技有限公司
Priority to US14/897,359 priority Critical patent/US9794947B2/en
Priority to PCT/CN2013/081110 priority patent/WO2015018042A1/zh
Priority to EP13890987.4A priority patent/EP3032880B1/en
Priority to CN201380069018.0A priority patent/CN105165062B/zh
Publication of WO2015018042A1 publication Critical patent/WO2015018042A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a cell interference coordination method, a base station, and a terminal. Background technique
  • 3GPP Release- 11 3GPP Release- 11 and earlier, there have been some research on interference cancellation for Pico ( ⁇ : base station) and Femto (home base station).
  • Pico provides a scheme for hotspot service offloading. It is found that the Pico base station has a small transmission power compared to the macro base station, and the effect of service offload is not obvious, and the load of Pico is only about 60%. Therefore, 3GPP proposes a Cell Range Expansion (CRE) technology, which allows the terminal to preferentially access the Pico cell by setting the access offset (Bias). However, the terminal accessing the Pico service in the CRE area receives a large amount of interference power from the macro base station. For this reason, the 3GPP has carried out two topics of Eicic and Feicic, and time-multiplexed the macro base station and the Pico by the ABS (Almost Blank Subframe) technology. The control signal ensures the reliability of the control channel.
  • CRE Cell Range Expansion
  • Femto is a user-located home base station that accesses the core network through ADSL.
  • the indoor deployment location is relatively random. Without the operator's network planning, multiple Femto scenarios may occur.
  • Femto often uses CSG (Close Subscribe Group) configuration, which only provides services for authorized users. Femto often has a large interference to neighboring unauthorized users.
  • CSG Cell Subscribe Group
  • 3GPP provides interference management methods such as Femto power control and control channel frequency reuse to solve the interference problem, but it still does not work well in areas with high density of Femto base stations.
  • the present invention is based on at least one of the above technical problems, and proposes a new cell interference coordination scheme, which can enable a base station to transmit pilot information when entering a dormant state, so as to avoid interference to other base stations, and enable the terminal to The received pilot information wakes up the sleeping base station when needed.
  • the present invention provides a cell interference coordination method, including: After the base station switches from the working state to the sleep state, the base station stops transmitting other information except the pilot information.
  • the base station after the base station is switched from the working state to the dormant state, stopping transmitting other information than the pilot information, the other information pair sent by the base station that does not need to provide the data and/or voice service temporarily can be avoided.
  • the interference caused by other base stations enables the terminal to search for the sleeping base station through the pilot information sent by the base station, ensuring that the terminal can wake up the sleeping base station in time when data transmission and/or voice service is required.
  • the method further includes: the base station switching from the working state to the dormant state when determining that the preset state switching condition is met; wherein the state switching condition includes: the active state does not exist in the cell And a terminal in an idle state; or a terminal in which there is no active state in the cell; or a terminal having only an idle state in the cell, and another cell in which the terminal in the idle state camps; or an active state in the cell a terminal and a terminal in an idle state, and there are other terminals in which the terminal in the active state and the terminal in the idle state camp on.
  • the base station is counted according to the status of the terminal in the cell corresponding to the base station to ensure the base station.
  • the effect of sleep on the terminal is as small as possible, ensuring a good user experience.
  • the method further includes: the base station transmitting the pilot information only in a part of an antenna port.
  • the base station in the dormant state, can normally transmit the pilot information; but because the interference caused by the pilot information is large, the pilot information can be ensured only when the pilot information is transmitted only in part of the antenna port when the base station sleeps.
  • the dormant base station can be searched, the interference caused by the base station to other non-dormant cells is reduced.
  • an antenna port that can be used to transmit CRS pilot information includes 0, 1, 2, 3, and then any one, two, or three of them can be selected for transmitting CRS pilot information, and then When using all antenna ports to transmit pilot information, the above scheme obviously can effectively reduce interference to other base stations.
  • the partial antenna port has a sequence number of 2 and/or 3.
  • the base station when selecting a part of the antenna port to send the pilot information, may preferentially select the antenna port that the transmitted pilot information does not cause interference or minimize interference to other un-dormant cells, so as to reduce the impact on other non-dormant cells. Interference.
  • the pilot information is a cell-specific pilot
  • selecting an antenna port with sequence numbers 2 and/or 3 can effectively reduce the interference caused by the pilot information to other un-dormant cells, thereby improving the communication quality of other un-dormant cells.
  • the method further includes: the base station receiving the wake-up request, and switching from the sleep state to the working state.
  • the wake-up request received by the base station may be initiated by the terminal itself, for example, the terminal needs to perform services such as data access and voice call, or the network may notify the terminal through the camping cell, and the terminal may determine to send to the dormant base station. Wake up request.
  • the base station When the base station receives the wake-up request, it switches from the dormant state to the working state, so that when the terminal needs to provide data and/or voice service by the base station, the terminal wakes up the base station in the dormant state in time, ensures the real-time communication of the terminal, and improves the work of the base station. Performance.
  • the method further includes: the base station switching from a sleep state to an active state upon receiving the wake-up request; or the base station receiving wake-up from multiple terminals within a preset time period When requested, switching from the sleep state to the active state; and/or the base station switches from the sleep state to the active state in the case of determining that it does not cause interference to other base stations.
  • the base station can receive a wake-up request, that is, switch from the sleep state to the working state, to ensure that the terminal performs communication normally.
  • the base station may receive the plurality of base stations within a preset time period.
  • the terminal wakes up the request, it switches from the sleep state to the working state, ensuring that there are enough service requests after the base station is woken up, and at the same time, the number of base stations that wake up is reduced, the interference between multiple base stations is avoided, and the interference is also reduced.
  • the energy consumption of the base station can also be switched from the sleep state to the working state when receiving the wake-up request and determining that it does not cause interference to other base stations, thereby improving the performance of the base station.
  • the process of determining, by the base station, whether it causes interference to other base stations includes: acquiring, by the base station, real-time status information of the specified base station, and/or acquiring characteristic parameters of the signal from the designated base station. And determining that the base station does not cause interference to the designated base station, if the designated base station is in a dormant state, and/or the value of the feature parameter is less than or equal to a preset parameter threshold.
  • the base station by determining whether the base station itself interferes with other base stations, the base station can be switched from the sleep state to the working state when the base station needs to be woken up and it is determined that it does not cause interference to other base stations, to a maximum extent.
  • the interference between base stations is reduced.
  • the acquired real-time status information of the specified base station includes the characteristic parameters of the designated base station that are in the dormant/operating state, and the obtained characteristic parameters from the designated base station may be reflected by the base station signal strength and the signal-to-noise ratio, or other characteristic parameters reflecting the base station signal.
  • the method further includes: the base station generating and broadcasting a wake-up notification message, where the wake-up notification message includes at least the identifier of the base station and the Wake up the identity of the sender of the request, and the wakeup notification message is used to indicate that the base station is to be sent according to the The request of the sender is switched from the dormant state to the working state; and/or the base station receives the wakeup notification message from the other base station; wherein, if the base station sends the wakeup notification message and does not receive the corresponding response message, And then switching from the dormant state to the working state; if the base station receives the response message, negotiating with the sender of the response message to determine a base station that finally switches from the dormant state to the working state; if the base station receives To the wakeup notification message from other base stations, the corresponding response message is returned or not responded.
  • the wake-up notification message is generated and broadcasted, and it is possible to confirm whether there is another base station that receives the same wake-up request and waits for the handover working state, and determines that no other base station waits for the handover.
  • the slave state is switched to the working state, and when it is determined that other base stations also receive the same wake-up request and switch the working state, the base station that finally switches from the sleep state to the working state is determined through negotiation between the base stations.
  • the number of waking base stations is reduced, the interference between base stations is reduced, and an optimization scheme for waking up the base station is realized.
  • a base station capable of providing an optimum signal quality for a terminal transmitting a wake-up request, and/or a base station receiving the most wake-up request, and the like may be selected.
  • the negotiation between the base stations can be through coordination of the backhaul link or coordination of information over the air interface.
  • the waking request includes information of all target base stations, and when the awake request is further sent to another base station, the cell interference coordination method further includes: the base station directly The other base stations negotiate to determine the base station that eventually switches from the sleep state to the active state.
  • the base station when the base station receives the wake-up request sent by the terminal, it does not know whether there are other base stations that receive the same wake-up request, and does not know which other base stations receive the wake-up request. Therefore, by indicating other base stations that receive the wake-up request in the wake-up request, the base stations can directly negotiate, so that the negotiation process is more purposeful, which helps to shorten the delay caused by the negotiation process.
  • the method further includes: the base station receiving the wakeup request on a specified time-frequency resource, and the wake-up request includes a specified preamble sequence.
  • the base station is configured to receive the wake-up request on the specified time-frequency resource, and the specified wake-up request includes the specified preamble sequence, so that the terminal can accurately locate the base station that needs to wake up, and avoid waking up multiple base stations at the same time.
  • a plurality of base stations may exist on the same time-frequency resource, and the preamble sequences of the base stations on different time-frequency resources may be the same. Therefore, in order to accurately locate the base station that the terminal needs to wake up, the base station may be configured to wake up on the specified time-frequency resource. Request, and accurately locate the base station that needs to wake up by using the preamble sequence in the wakeup request.
  • preamble "pilot information", “reference symbol” and the like are only different expressions of the same concept, which are substantially the same and equivalent.
  • the method further includes: sending, by the base station, a time-frequency resource available to itself and a set of available preamble sequences before switching from the working state to the dormant state.
  • the time-frequency resources available to the base station and the set of available preamble sequences can uniquely identify the base station, and enable the base station to transmit its available time-frequency resources and available before switching from the working state to the dormant state.
  • the set of preamble sequences may be used by other base stations and terminals to determine the base station that enters the dormant state according to the received time-frequency resource and the preamble sequence set.
  • the terminal needs to wake up the designated base station, it only needs to send the time-frequency resource where the designated base station is located. With the wake-up request of the preamble sequence available to the designated base station, the designated base station can be awake accurately.
  • the other base stations may also determine the base station entering the dormant state according to the received time-frequency resources and the preamble sequence set, so that it can be determined that the base station does not interfere with the base station entering the dormant state.
  • the method further includes: the pilot information that is sent by the base station in a dormant state includes a set of preamble sequences that are available to itself.
  • the terminal when the terminal sends the wake-up request, the terminal transmits on the specified time-frequency resource, and when the base station is in the dormant state, sends the set of preamble sequences available to the base station, so that the multiple base stations on the same time-frequency resource are enabled.
  • the distinguishing between the available preamble sequences (sets) is such that when the terminal wakes up the base station, by selecting the time-frequency resource and the preamble sequence, only the base station specified therein is awake accurately, thereby avoiding waking up too many base stations at the same time. (such as all base stations using the same time-frequency resource) causing interference between base stations.
  • a base station comprising: a data processing module, configured to control a The base station is switched from the working state to the sleep state; the data interaction module is configured to stop sending other information than the pilot information when the base station is in a dormant state.
  • the base station after the base station is switched from the working state to the dormant state, stopping transmitting other information than the pilot information, the other information pair sent by the base station that does not need to provide the data and/or voice service temporarily can be avoided.
  • the interference caused by other base stations enables the terminal to search for the sleeping base station through the pilot information sent by the base station, ensuring that the terminal can wake up the sleeping base station in time when data transmission and/or voice service is required.
  • the data processing module is further configured to: determine whether the base station meets a preset state switching condition, and if the determination result is satisfied, control the base station to switch from the working state to a state in which the state transition includes: a terminal that does not have an active state and an idle state in the cell; or a terminal that does not have an active state in the cell; or a terminal that has only an idle state in the cell, and exists for the Other cells in which the terminal in the idle state camps; or a terminal in the active state and a terminal in the idle state, and there are other terminals in which the terminal in the active state and the terminal in the idle state camp on.
  • the data interaction module transmits the pilot information only in a part of the antenna port.
  • the base station in the dormant state, can normally transmit the pilot information; but because the interference caused by the pilot information is large, the pilot information can be ensured only when the pilot information is transmitted only in part of the antenna port when the base station sleeps.
  • the dormant base station can be searched, the interference caused by the base station to other non-dormant cells is reduced.
  • an antenna port that can be used to transmit CRS pilot information includes 0, 1, 2, 3, and then any one, two, or three of them can be selected for transmitting CRS pilot information, and then When using all antenna ports to transmit pilot information, the above scheme obviously can effectively reduce interference to other base stations.
  • the partial antenna port has a sequence number of 2 and/or 3.
  • the base station when selecting a part of the antenna port to send the pilot information, may preferentially select the antenna port that the transmitted pilot information does not cause interference or minimize interference to other un-dormant cells, so as to reduce the impact on other non-dormant cells. Interference.
  • the pilot information is a cell-specific pilot
  • selecting an antenna port with sequence numbers 2 and/or 3 can effectively reduce the interference caused by the pilot information to other un-dormant cells, thereby improving the communication quality of other un-dormant cells.
  • the data interaction module is further configured to: receive a wakeup request; and the data processing module is further configured to: when the data interaction module receives the wakeup request, control the location The base station switches from a sleep state to an active state.
  • the wake-up request received by the base station may be initiated by the terminal itself, for example, the terminal needs to perform services such as data access and voice call, or the network may notify the terminal through the camping cell, and the terminal may determine to send to the dormant base station. Wake up request.
  • the base station When the base station receives the wake-up request, it switches from the dormant state to the working state, so that when the terminal needs to provide data and/or voice service by the base station, the terminal wakes up the base station in the dormant state in time, ensures the real-time communication of the terminal, and improves the work of the base station. Performance.
  • the data processing module controls, when the data interaction module receives the wakeup request, to switch the base station from a sleep state to an active state; or the data processing module Controlling, by the data interaction module, that the base station switches from a dormant state to an active state when the data interaction module receives a wakeup request from multiple terminals within a preset time period; and/or the base station further includes an interference determination module, The data processing module is configured to switch from the sleep state to the working state if the interference determination module determines that it does not cause interference to other base stations.
  • the base station can receive a wake-up request, that is, switch from the sleep state to the working state, to ensure that the terminal performs communication normally.
  • the terminal since the terminal sends a wakeup request, it may simultaneously have multiple bases.
  • the station performs the transmission, so as to avoid interference between the base stations that are awakened by too many, so that the base station can switch from the sleep state to the working state when receiving the wake-up request from the multiple terminals within the preset time period. It is ensured that there are enough service requests after the base station is woken up, and since the number of base stations that wake up is reduced, interference between multiple base stations is avoided, and the power consumption of the base station is also reduced. Further, the base station can also be switched from the sleep state to the working state when receiving the wake-up request and determining that it does not cause interference to other base stations, thereby improving the performance of the base station.
  • the interference determining module is configured according to real-time status information of the specified base station acquired by the data interaction module, and/or according to a signal received by the data interaction module from the designated base station. Determining, by the parameter, whether the base station causes interference to other base stations, where the interference determination module is in a sleep state, and/or the value of the feature parameter is less than or equal to a preset parameter threshold. And determining that the base station does not cause interference to the designated base station.
  • the base station by determining whether the base station itself interferes with other base stations, the base station can be switched from the sleep state to the working state when the base station needs to be woken up and it is determined that it does not cause interference to other base stations, to a maximum extent.
  • the interference between base stations is reduced.
  • the acquired real-time status information of the specified base station includes the characteristic parameters of the designated base station that are in the dormant/operating state, and the obtained characteristic parameters from the designated base station may be reflected by the base station signal strength and the signal-to-noise ratio, or other characteristic parameters reflecting the base station signal.
  • the data processing module is further configured to: generate a wakeup notification message, where the wakeup notification message includes at least an identifier of the base station and an identifier of a sender of the wakeup request, and the The wakeup notification message is used to indicate that the base station is to be switched from the sleep state to the working state according to the request of the sender;
  • the data interaction module is further configured to: broadcast the wakeup notification message, and/or receive from other base stations The wake-up notification message; wherein the data processing module controls the base station to switch from the sleep state to the working state if the data interaction module sends the wake-up notification message and does not receive the corresponding response message;
  • the data processing module when the data interaction module receives the response message, negotiates with the sender of the response message by the data interaction module to determine a base station that finally switches from the sleep state to the working state;
  • the data interaction module receives the wakeup notification message from other base stations Case, also returns a response message corresponding to the data processing module generates a response or not.
  • the wake-up notification message is generated and broadcasted, and it is possible to confirm whether there is another base station that receives the same wake-up request and waits for the handover working state, and determines that no other base station waits for the handover.
  • the slave state is switched to the working state, and when it is determined that other base stations also receive the same wake-up request and switch the working state, the base station that finally switches from the sleep state to the working state is determined through negotiation between the base stations.
  • the number of waking base stations is reduced, the interference between base stations is reduced, and an optimization scheme for waking up the base station is realized.
  • a base station capable of providing an optimum signal quality for a terminal transmitting a wake-up request, and/or a base station receiving the most wake-up request, and the like may be selected.
  • the negotiation between the base stations can be through coordination of the backhaul link or coordination of information over the air interface.
  • the data processing module is further configured to: parse information of all target base stations included in the wake-up request, and pass the wake-up request to another base station,
  • the data interaction module directly negotiates with the other base stations to determine a base station that eventually switches from a sleep state to an active state.
  • the base station when the base station receives the wake-up request sent by the terminal, it does not know whether there are other base stations that receive the same wake-up request, and does not know which other base stations receive the wake-up request. Therefore, by indicating other base stations that receive the wake-up request in the wake-up request, the base stations can directly negotiate, so that the negotiation process is more purposeful, which helps to shorten the delay caused by the negotiation process.
  • the data interaction module receives the wakeup request on a specified time-frequency resource, and the wake-up request includes a specified preamble sequence.
  • the base station is configured to receive the wake-up request on the specified time-frequency resource, and the specified wake-up request includes the specified preamble sequence, so that the terminal can accurately locate the base station that needs to wake up, and avoid waking up multiple base stations at the same time.
  • the base station may receive the wakeup request on the specified time-frequency resource, and accurately locate the base station that needs to wake up through the preamble sequence in the wakeup request.
  • the data interaction module sends a time-frequency resource available to itself and a set of available preamble sequences before the data processing module controls the base station to switch from the working state to the dormant state.
  • the time-frequency resources available to the base station and the set of available preamble sequences can uniquely identify the base station, and enable the base station to transmit its available time-frequency resources and available before switching from the working state to the dormant state.
  • the set of preamble sequences may be used by other base stations and terminals to determine the base station that enters the dormant state according to the received time-frequency resource and the preamble sequence set.
  • the terminal needs to wake up the designated base station, it only needs to send the time-frequency resource where the designated base station is located. With the wake-up request of the preamble sequence available to the designated base station, the designated base station can be awake accurately.
  • the other base stations may also determine the base station entering the dormant state according to the received time-frequency resources and the preamble sequence set, so that it can be determined that the base station does not interfere with the base station entering the dormant state.
  • the data interaction module sends the pilot information including a set of preamble sequences available to the base station when the base station is in a dormant state.
  • the terminal when the terminal sends the wake-up request, the terminal transmits on the specified time-frequency resource, and when the base station is in the dormant state, sends the set of preamble sequences available to the base station, so that the multiple base stations on the same time-frequency resource are enabled.
  • the distinguishing between the available preamble sequences (sets) is such that when the terminal wakes up the base station, by selecting the time-frequency resource and the preamble sequence, only the base station specified therein is awake accurately, thereby avoiding waking up too many base stations at the same time. (such as all base stations using the same time-frequency resource) causing interference between base stations.
  • the present invention also provides a cell interference coordination method, including: receiving, by a terminal, pilot information transmitted by a base station in a dormant state; the terminal generating a wake-up request according to the pilot information, and transmitting the wake-up request to the base station
  • the wakeup request is used to request the base station to switch from a sleep state to an active state.
  • the terminal may be configured to generate a wake-up request according to the received pilot information sent by the base station, so that the terminal needs the base station to provide the data and/or voice service. Awakening the designated base station in the dormant state, avoiding the terminal waking up multiple base stations at the same time, causing interference between multiple base stations.
  • the method further includes: the terminal actively generating the wakeup request; or the terminal generating the wakeup request according to the received trigger request, where the trigger request is by a wireless mobile communication network
  • the cell camped by the terminal is sent to the terminal.
  • the state in which the terminal is located includes an active state and an idle state.
  • the base station When the terminal is in an active state, the base station is required to provide data and/or voice services, and the wake-up message may be actively generated (either initiated by the user, or by the terminal).
  • the application is initiated based on the requirement) to wake up the dormant base station; when the terminal is in an idle state, if it receives a trigger request sent by the cell in which it resides (such as load balancing based network switching requirements), it may generate a corresponding Wake up the request to wake up the sleeping base station.
  • the method further includes: the terminal measuring the received pilot information; wherein, when the measurement result indicates that the value of the feature parameter of the pilot information is better than a preset parameter threshold, The terminal sends the wakeup request to the corresponding base station; or according to the value of the feature parameter corresponding to all the pilot information indicated by the measurement result, the terminal selects a specified number of optimal pilot information from the terminal, and correspondingly The base station sends the wake-up request; or in all the pilot information whose value of the corresponding feature parameter is better than the preset parameter threshold, the terminal selects a specified number of optimal pilot information, and sends the specified pilot information to the corresponding base station. Wake up the request.
  • the terminal may measure the characteristic parameters of the base station according to the pilot information sent by the base station, such as RSRP (Reference Signal Receiving Power) and/or RSRQ (Reference Signal Receiving Quality) in the protocol specification. Reference signal reception quality).
  • the terminal may send a wakeup request to the base station corresponding to the pilot information whose value of the feature parameter is better than the preset parameter threshold, to ensure It has good communication quality when waking up the base station for communication; it can also send a wake-up request to the base station corresponding to the specified number of pilot information according to the value of the characteristic parameter; and the pilot information with the value of the characteristic parameter being better than the preset parameter threshold A specified number of pilot information is selected and a wake-up request is sent to the corresponding base station.
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the multiple base stations may determine the final wake-up base station through negotiation to ensure the minimum number of wake-up base stations and avoid interference between multiple base stations.
  • the wakeup request may be a RACH (Random Access Channel), an SRS (Sounding Reference Signal), or the like.
  • the method further includes: the terminal generating, according to the time-frequency resource available to the base station and the available preamble sequence set obtained from the camped cell, the wake-up request including the specified preamble sequence, where And sending the wake-up request at the available time-frequency resource.
  • the time-frequency resources available to the base station and the set of available preamble sequences can be uniquely identified by the base station, so that the terminal transmits the preamble sequence including the designated base station on the time-frequency resources available to the designated base station.
  • the set wake-up request can make the terminal accurately locate the base station that needs to wake up, avoiding waking up multiple base stations at the same time and causing mutual interference.
  • the method further includes: the terminal parsing, from the received pilot information sent by the base station, a preamble sequence set available by the base station.
  • the pilot information sent by the base station in the dormant state includes a set of preamble sequences that are available to the user, so that the terminal is uniquely identified on the specified time-frequency resource, so that the terminal wakes up the base station according to the analysis.
  • the set of preamble sequences only wakes up the designated base station in the same time-frequency resource, avoiding waking up too many base stations at the same time (such as all base stations using the same time-frequency resource) to cause interference between the base stations.
  • the method further includes: the terminal receiving the pilot information sent by the base station, acquiring an identifier of the base station from the pilot information, and querying from a preset table to a corresponding And the set of preamble sequences that are available to the base station, where the identifier is at least associated with the identifier of the base station and a set of preamble sequences available to the base station.
  • the identifier of the base station may be a PCI (Physical Cell ID), and the preset table may store the PCI of each base station in association with the set of preamble sequences available to the base station, so that the terminal is configured according to
  • the identifier of a certain base station included in the received pilot information directly queries the corresponding set of available preamble sequences without querying other base stations.
  • the preset table may only correspond to a certain part or a part of the base station, thereby helping to improve the query efficiency of the terminal; the preset table may also correspond to all the base stations, thereby helping to improve the successful query of the terminal.
  • the probability of a set of preamble sequences may be a PCI (Physical Cell ID)
  • PCI Physical Cell ID
  • a terminal including: a data interaction module, configured to receive pilot information sent by a base station in a dormant state, and send a wakeup request generated by a data processing module; the data processing module And generating, by using the pilot information, the wakeup request, where the wakeup request is used to request the base station to switch from a sleep state to an active state.
  • the terminal may be configured to generate a wake-up request according to the received pilot information sent by the base station, so that the terminal needs the base station to provide the data and/or voice service. Awakening the designated base station in the dormant state, avoiding the terminal waking up multiple base stations at the same time, causing interference between multiple base stations.
  • the data processing module actively generates the wakeup request; or the data processing module generates the wakeup request according to the trigger request received by the data interaction module, where the trigger The request is sent by the wireless mobile communication network to the terminal through a cell in which the terminal camps.
  • the state in which the terminal is located includes an active state and an idle state.
  • the base station When the terminal is in an active state, the base station is required to provide data and/or voice services, and the wake-up message may be actively generated (either initiated by the user, or by the terminal).
  • the application is initiated based on the requirement) to wake up the sleeping base station; when the terminal is in the idle state, if it receives the trigger request sent by the cell in which it resides (such as load balancing based network switching) If so, a corresponding wake-up request can be generated to wake up the sleeping base station.
  • the data processing module is further configured to measure the received pilot information, where the data interaction module indicates that the value of the characteristic parameter of the pilot information is better than the measurement result. If the parameter threshold is preset, the wake-up request is sent to the corresponding base station; or the data processing module selects a specified number of optimal values according to the value of the feature parameter corresponding to all the pilot information indicated by the measurement result. Pilot information, and the data interaction module sends the wake-up request to the corresponding base station; or the data processing module selects and specifies all the pilot information whose value of the corresponding feature parameter is better than the preset parameter threshold. A quantity of optimal pilot information, and the data interaction module sends the wake-up request to a corresponding base station.
  • the terminal may measure the characteristic parameters of the base station according to the pilot information sent by the base station, such as RSRP (Reference Signal Receiving Power) and/or RSRQ (Reference Signal Receiving Quality) in the protocol specification. Reference signal reception quality).
  • the terminal may send a wake-up request to the base station corresponding to the pilot information whose value of the feature parameter is better than the preset parameter threshold, so as to ensure good communication quality when the base station is awake for communication; or according to the value of the characteristic parameter to the specified number of guides
  • the base station corresponding to the frequency information sends a wake-up request.
  • the specified number of pilot information may also be selected from the pilot information whose value of the feature parameter is better than the preset parameter threshold, and the wake-up request is sent to the corresponding base station. If the terminal sends a wake-up request to multiple base stations at the same time, when receiving the wake-up request, the multiple base stations can determine the final wake-up base station by negotiation to ensure the minimum number of wake-up base stations and avoid interference between multiple base stations.
  • the wakeup request may be a RACH (Random Access Channel), an SRS (Sounding Reference Signal), or the like.
  • the data interaction module is further configured to: acquire time-frequency resources and available preamble sequence sets available by the base station from a cell where the terminal resides; and the data processing module is further used to: Generating the wake-up request including the specified preamble sequence for transmission by the data interaction module at the available time-frequency resources.
  • the time-frequency resources available to the base station and the set of available preamble sequences can be uniquely identified by the base station, so that the terminal transmits the preamble sequence including the designated base station on the time-frequency resources available to the designated base station.
  • the set wake-up request can make the terminal accurately locate the base station that needs to wake up, avoiding waking up multiple base stations at the same time and causing mutual interference.
  • the data processing module is further configured to parse, from the pilot information received by the data interaction module from the base station, a set of preamble sequences available to the base station.
  • the pilot information sent by the base station in the dormant state includes a set of preamble sequences that are available to the user, so that the terminal is uniquely identified on the specified time-frequency resource, so that the terminal wakes up the base station according to the analysis.
  • the set of preamble sequences only wakes up the designated base station in the same time-frequency resource, avoiding waking up too many base stations at the same time (such as all base stations using the same time-frequency resource) to cause interference between the base stations.
  • the data processing module is further configured to: obtain the identifier of the base station from the pilot information received by the data interaction module from the base station, and use a preset form. Querying a set of preamble sequences available to the base station corresponding to the identifier, where the preset table stores at least an identifier of the base station and a set of preamble sequences available to the base station.
  • the identifier of the base station may be a PCI (Physical Cell ID), and the preset table may store the PCI of each base station in association with the set of preamble sequences available to the base station, so that the terminal is configured according to
  • the identifier of a certain base station included in the received pilot information directly queries the corresponding set of available preamble sequences without querying other base stations.
  • the preset table may only correspond to a certain part or a part of the base station, thereby helping to improve the query efficiency of the terminal; the preset table may also correspond to all the base stations, thereby helping to improve the successful query of the terminal.
  • the probability of a set of preamble sequences may be a PCI (Physical Cell ID)
  • PCI Physical Cell ID
  • a program product stored on a non-transitory machine readable medium for a cell interference coordination process, the program product comprising a machine for causing a computer system to perform the following steps Executable instructions: After the base station switches from the working state to the sleep state, the base station stops transmitting other information than the pilot information.
  • a non-transitory machine readable medium storing a program product for a cell interference coordination process, the program product comprising machine executable instructions for causing a computer system to perform the following steps: After the base station switches from the active state to the sleep state, the base station stops transmitting other information than the pilot information.
  • a machine readable program the program causing a machine to perform the cell interference coordination method according to any one of the above aspects.
  • a storage medium storing a machine readable program, wherein the machine readable program causes a machine to perform the cell interference coordination method according to any one of the technical solutions described above.
  • the base station can be configured to transmit pilot information when entering a dormant state, while avoiding interference to other base stations, so that the terminal can wake up the dormant base station when needed according to the received pilot information.
  • FIG. 1 shows a flow chart of a cell interference coordination method according to an embodiment of the present invention
  • 2A is a schematic diagram showing the structure of a resource block in a conventional cyclic prefix system
  • 2B is a schematic diagram showing the structure of a resource block in an extended cyclic prefix system
  • Figure 3 shows a block diagram of a base station in accordance with one embodiment of the present invention
  • FIG. 4 is a flow chart showing a cell interference coordination method according to another embodiment of the present invention.
  • Figure 5 shows a block diagram of a terminal in accordance with another embodiment of the present invention.
  • FIG. 6 shows a specific flow chart of a cell interference coordination method according to an embodiment of the present invention. detailed description
  • FIG. 1 shows a flow chart of a cell interference coordination method in accordance with one embodiment of the present invention.
  • the cell interference coordination method includes: Step 102: After the base station switches from the working state to the sleep state, the base station stops transmitting other information except the pilot information.
  • the base station after the base station is switched from the working state to the dormant state, stopping transmitting other information than the pilot information, the other information pair sent by the base station that does not need to provide the data and/or voice service temporarily can be avoided.
  • the interference caused by other base stations enables the terminal to search for the base station in the dormant state through the pilot information sent by the base station, and ensures that the terminal can wake up the sleeping base station in time when data transmission and/or voice service is required.
  • the pilot information may be a cell-specific reference signal (CRS), or may be part of the CRS that does not cause interference or interference to other base stations, or may be supported by the protocol.
  • CRS cell-specific reference signal
  • Other pilot information such as channel state information reference signal (CSI-RS, channel state information reference signal), or part of the information, but to ensure that the interference caused to other base stations does not exceed a certain interference threshold.
  • CSI-RS channel state information reference signal
  • CSI-RS channel state information reference signal
  • the method further includes: the base station switching from the working state to the dormant state when determining that the preset state switching condition is met; wherein the state switching condition includes: the cell does not exist a terminal that activates a state and an idle state; or a terminal that does not have an active state in the cell; or a terminal that has only an idle state in the cell, and another cell in which the terminal in the idle state camps; or an activation in the cell a terminal of a state and a terminal of an idle state, and there are other terminals in which the terminal in the active state and the terminal in the idle state camp on.
  • the state switching condition includes: the cell does not exist a terminal that activates a state and an idle state; or a terminal that does not have an active state in the cell; or a terminal that has only an idle state in the cell, and another cell in which the terminal in the idle state camps; or an activation in the cell a terminal of a state and a terminal of an idle state, and there are other terminals in which the terminal in the active
  • the base station when there is no terminal in the cell corresponding to the base station, the base station can directly enter the sleep state; in the second case, because the terminal in the activated state needs the base station to provide data and/or voice service, The terminal in the idle state only needs to reside in the cell to receive the corresponding base station information. Therefore, it is only necessary to ensure that the terminal in the active state does not exist in the cell, and the interference to the normal communication of the terminal can be minimized.
  • the interference to the terminal can be reduced as much as possible; in the fourth case, regardless of the cell A terminal that is currently in an active state or a terminal that is in an idle state can reduce interference to normal communication of the terminal to a certain extent as long as there are other cells available for camping.
  • the base station may determine, by using a plurality of manners, whether there are other cells for a certain terminal to camp on. For example, the base station may determine, by using the measurement report reported by the terminal, that a cell with a better signal exists around the terminal (for example, the signal power is greater than Or equal to the preset power threshold, or the signal quality is greater than or equal to the preset quality threshold), determining that the terminal can camp on the cell; or, the base station can acquire the location of the terminal, so that when there is a geographically close cell around the terminal , the terminal is considered to be resident in the cell; or other methods are used.
  • the base station may determine, by using a plurality of manners, whether there are other cells for a certain terminal to camp on. For example, the base station may determine, by using the measurement report reported by the terminal, that a cell with a better signal exists around the terminal (for example, the signal power is greater than Or equal to the preset power threshold, or the signal quality is greater than or equal to the preset quality threshold),
  • the method further includes: the base station transmitting the pilot information only in a part of an antenna port.
  • the base station in the dormant state, can normally transmit the pilot information; but because the interference caused by the pilot information is large, the pilot information can be ensured only when the pilot information is transmitted only in part of the antenna port when the base station sleeps.
  • the dormant base station can be searched, the interference caused by the base station to other non-dormant cells is reduced.
  • an antenna port that can be used to transmit CRS pilot information includes 0, 1, 2, 3, and then any one, two, or three of them can be selected for transmitting CRS pilot information, and then When using all antenna ports to transmit pilot information, the above scheme obviously can effectively reduce interference to other base stations.
  • the partial antenna port has a sequence number of 2 and/or 3.
  • the base station when selecting a part of the antenna port to send the pilot information, may preferentially select the antenna port that the transmitted pilot information does not cause interference or minimize interference to other un-dormant cells, so as to reduce the impact on other non-dormant cells. Interference.
  • the pilot information is a cell-specific pilot
  • selecting an antenna port with sequence numbers 2 and/or 3 can effectively reduce the interference caused by the pilot information to other un-dormant cells, thereby improving the communication quality of other un-dormant cells.
  • FIG. 2A and FIG. 2B respectively show a schematic structural diagram of a resource block in an extended cyclic prefix system and an extended cyclic prefix system according to an embodiment of the present invention, and specifically illustrates an antenna for transmitting a CRS in the figure.
  • Location information for the port (port 0, port 1, port 2, port 3 shown in the figure).
  • the CRS is transmitted by the antenna port 2 and/or 3
  • the interference generated by the other base stations is relatively smaller, so the CRS sent by using the antenna ports of the port 2 and/or 3 can effectively reduce the CRS caused by other non-dormant cells. interference.
  • the method further includes: the base station receiving the wake-up request, and switching from the sleep state to the working state.
  • the wake-up request received by the base station may be initiated by the terminal itself, for example, the terminal needs to perform services such as data access and voice call, or the network may notify the terminal through the camping cell, and the terminal may determine to send to the dormant base station. Wake up request.
  • the base station When the base station receives the wake-up request, it switches from the dormant state to the working state, so that when the terminal needs to provide data and/or voice service by the base station, the terminal wakes up the base station in the dormant state in time, ensures the real-time communication of the terminal, and improves the work of the base station. Performance.
  • the method further includes: when the base station receives the wakeup request, The sleep state is switched to the working state; or the base station switches from the sleep state to the working state when receiving the wake-up request from the plurality of terminals within the preset time period; and/or the base station determines that it does not belong to other base stations In the case of interference, switch from the sleep state to the working state.
  • the base station can receive a wake-up request, that is, switch from the sleep state to the working state, to ensure that the terminal performs communication normally.
  • the base station may receive the plurality of base stations within a preset time period.
  • the terminal wakes up the request, it switches from the sleep state to the working state, ensuring that there are enough service requests after the base station is woken up, and at the same time, the number of base stations that wake up is reduced, the interference between multiple base stations is avoided, and the interference is also reduced.
  • the energy consumption of the base station can also be switched from the sleep state to the working state when receiving the wake-up request and determining that it does not cause interference to other base stations, thereby improving the performance of the base station.
  • the process of determining, by the base station, whether it causes interference to other base stations includes: acquiring, by the base station, real-time status information of the specified base station, and/or acquiring characteristic parameters of the signal from the designated base station. And determining that the base station does not cause interference to the designated base station, if the designated base station is in a dormant state, and/or the value of the feature parameter is less than or equal to a preset parameter threshold.
  • the base station by determining whether the base station itself interferes with other base stations, the base station can be switched from the sleep state to the working state when the base station needs to be woken up and it is determined that it does not cause interference to other base stations, to a maximum extent.
  • the interference between base stations is reduced.
  • the acquired real-time status information of the specified base station includes the characteristic parameters of the designated base station that are in the dormant/operating state, and the obtained characteristic parameters from the designated base station may be reflected by the base station signal strength and the signal-to-noise ratio, or other characteristic parameters reflecting the base station signal.
  • the base station can also determine whether the state switching can be performed in other manners. For example, when the base station within a certain range of the base station is in a dormant state, the base station determines that it will not cause an impact and can be restored to the working state; If there are a large number of base stations in the working state, or a number of base stations in the working state (greater than or equal to a preset number threshold), it is determined that the state switching of the base station will affect other base stations and cannot be restored to the working state.
  • the method further includes: the base station generating and broadcasting a wake-up notification message, where the wake-up notification message includes at least the identifier of the base station and the An identifier of the sender of the wake-up request, and the wake-up notification message is used to indicate that the base station is to be switched from a dormant state to an active state according to the request of the sender; and/or the base station receives a wake-up from another base station a notification message; wherein, if the base station sends the wakeup notification message and does not receive a corresponding response message, switching from a dormant state to an active state; if the base station receives the response message, and the response message The sender negotiates to determine the base station that eventually switches from the dormant state to the active state; if the base station receives the wakeup notification message from the other base station, it returns a corresponding response message or does not respond.
  • the wake-up notification message is generated and broadcasted, and it is possible to confirm whether there is another base station that receives the same wake-up request and waits for the handover working state, and determines that no other base station waits for the handover.
  • the slave state is switched to the working state, and when it is determined that other base stations also receive the same wake-up request and switch the working state, the base station that finally switches from the sleep state to the working state is determined through negotiation between the base stations.
  • the number of waking base stations is reduced, the interference between base stations is reduced, and an optimization scheme for waking up the base station is realized.
  • a base station capable of providing an optimum signal quality for a terminal transmitting a wake-up request, and/or a base station receiving the most wake-up request, and the like may be selected.
  • the negotiation between the base stations can be through coordination of the backhaul link or coordination of information over the air interface.
  • the waking request includes information of all target base stations, and when the awake request is further sent to another base station, the cell interference coordination method further includes: the base station directly The other base stations negotiate to determine the base station that eventually switches from the sleep state to the active state.
  • the base station when the base station receives the wake-up request sent by the terminal, it does not know whether there are other base stations that receive the same wake-up request, and does not know which other base stations receive the wake-up request. Therefore, by indicating other base stations that receive the wake-up request in the wake-up request, the base stations can directly Negotiating to make the negotiation process more purposeful helps to reduce the delay caused by the negotiation process.
  • the wake-up request may further include other information of the foregoing base station, for example, the terminal may measure the performance indicator of the base station according to the pilot information sent by the base station (such as RSRP (Reference Signal Receiving Power) in the protocol specification). And / or RSRQ (Reference Signal Receiving Quality), and transmit the measured performance indicators of the plurality of base stations to the plurality of base stations simultaneously with the wake-up request, so that the plurality of base stations according to the performance indicators of all the base stations that receive the wake-up request
  • the base station that ultimately needs to switch from the dormant state to the active state is determined to ensure that the awakened base station has good performance.
  • the method further includes: the base station receiving the wakeup request on a specified time-frequency resource, and the wake-up request includes a specified preamble sequence.
  • the base station is configured to receive the wake-up request on the specified time-frequency resource, and the specified wake-up request includes the specified preamble sequence, so that the terminal can accurately locate the base station that needs to wake up, and avoid waking up multiple base stations at the same time.
  • a plurality of base stations may exist on the same time-frequency resource, and the preamble sequences of the base stations on different time-frequency resources may be the same. Therefore, in order to accurately locate the base station that the terminal needs to wake up, the base station may be configured to wake up on the specified time-frequency resource. Request, and accurately locate the base station that needs to wake up by using the preamble sequence in the wakeup request.
  • preamble "pilot information", “reference symbol” and the like are only different expressions of the same concept, which are substantially the same and equivalent.
  • the method further includes: sending, by the base station, a time-frequency resource available to itself and a set of available preamble sequences before switching from the working state to the dormant state.
  • the time-frequency resources available to the base station and the set of available preamble sequences can uniquely identify the base station, and enable the base station to transmit its available time-frequency resources and available before switching from the working state to the dormant state.
  • the set of preamble sequences may be used by other base stations and terminals to determine the base station that enters the dormant state according to the received time-frequency resource and the preamble sequence set.
  • the terminal needs to wake up the designated base station, it only needs to send the time-frequency resource where the designated base station is located. With the wake-up request of the preamble sequence available to the designated base station, the designated base station can be awake accurately.
  • the other base stations may also determine the base station entering the dormant state according to the received time-frequency resources and the preamble sequence set, so that it can be determined that the base station does not interfere with the base station entering the dormant state.
  • the method further includes: the pilot information that is sent by the base station in a dormant state includes a set of preamble sequences that are available to itself.
  • the terminal when the terminal sends the wake-up request, the terminal transmits on the specified time-frequency resource, and when the base station is in the dormant state, sends the set of preamble sequences available to the base station, so that the multiple base stations on the same time-frequency resource are enabled.
  • the distinguishing between the available preamble sequences (sets) is such that when the terminal wakes up the base station, by selecting the time-frequency resource and the preamble sequence, only the base station specified therein is awake accurately, thereby avoiding waking up too many base stations at the same time. (such as all base stations using the same time-frequency resource) causing interference between base stations.
  • Figure 3 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • a base station 300 includes: a data processing module 302, configured to control the base station 300 to switch from a working state to a sleep state; and a data interaction module 304, configured to be in the base station When the 300 is in the sleep state, it stops sending information other than the pilot information.
  • the base station 300 after the base station 300 is switched from the working state to the dormant state, stopping transmitting other information except the pilot information, the above-mentioned other transmission by the base station 300 that does not need to provide data and/or voice service temporarily can be avoided.
  • the interference caused by the information to the other base stations 300, and the terminal can search for the base station 300 in the dormant state through the pilot information sent by the base station 300, ensuring that the terminal can wake up the sleeping base station in time when the data transmission and/or voice service is required. 300.
  • the pilot information may be a cell-specific reference signal (CRS), or may be part of the CRS that does not cause interference or interference to other base stations, or may be supported by the protocol.
  • CRS cell-specific reference signal
  • Other pilot information such as channel state information reference signal (CSI-RS, channel state information reference signal), or part of the information, but to ensure that the interference caused to other base stations does not exceed a certain interference threshold.
  • CSI-RS channel state information reference signal
  • CSI-RS channel state information reference signal
  • the data processing module 302 is further configured to: determine whether the base station 300 satisfies a preset state switching condition, and if the determination result is satisfied, control the base station 300 to work from The state is switched to the sleep state; wherein, the state switching condition includes: a terminal that does not have an active state and an idle state in the cell; or a terminal that does not have an active state in the cell; or a terminal that has only an idle state in the cell, and exists Other cells in which the terminal in the idle state camps; or a terminal in an active state and a terminal in an idle state, and a terminal for the active state and a terminal in which the idle state resides Community.
  • the base station 300 can directly enter the sleep state; in the second case, the terminal in the activated state needs the base station 300 to provide data and/or voice service.
  • the terminal in the idle state only needs to reside in the cell to receive the corresponding base station information. Therefore, it is only necessary to ensure that the terminal in the active state does not exist in the cell, so as to minimize the interference to the normal communication of the terminal; In the case where there is no terminal in the active state in the cell, if there is another cell in the idle state that exists in the cell, if there is another cell that can be used for camping, the interference to the terminal can be minimized. In the fourth case, Regardless of whether there is an active state terminal or an idle state terminal in the cell, as long as there are other cells available for camping, the interference to the normal communication of the terminal can be reduced to some extent.
  • the base station 300 can determine, by using multiple manners, whether there are other cells for a certain terminal to camp on. For example, the base station 300 can determine, by using the measurement report reported by the terminal, that a cell with a good signal exists around the terminal (such as a signal). If the power is greater than or equal to the preset power threshold, or the signal quality is greater than or equal to the preset quality threshold, determining that the terminal can camp on the cell; or, the base station 300 can acquire the location of the terminal, so that there is a geographical proximity around the terminal. In the case of a cell, it is considered that the terminal can camp on the cell; or other methods are used.
  • the data interaction module 304 transmits the pilot information only on a part of the antenna ports.
  • the base station 300 in the dormant state, can normally transmit the pilot information; but because the interference caused by the pilot information is large, by transmitting the pilot information only in part of the antenna port when the base station 300 is dormant, In the case of ensuring that the terminal can search for the dormant base station 300, the interference caused by the base station 300 to other non-dormant cells is reduced.
  • an antenna port that can be used to transmit CRS pilot information includes 0, 1, 2, 3, and then any one, two, or three of them can be selected for transmitting CRS pilot information, and then When using all antenna ports to transmit pilot information, the above scheme obviously can effectively reduce interference to other base stations.
  • the partial antenna port has a sequence number of 2 and/or 3.
  • the base station 300 may preferentially select the antenna port that the transmitted pilot information does not cause interference or minimize interference to other non-dormant cells, so as to reduce the interference to other unsleep cells.
  • the interference caused.
  • selecting the antenna port with the sequence number 2 and/or 3 can effectively reduce the interference of the pilot information to other un-dormant cells, thereby improving the communication quality of other non-dormant cells.
  • the data interaction module 304 is further configured to: receive a wake-up request; and the data processing module 302 is further configured to: when the data interaction module 304 receives the wake-up request And controlling the base station 300 to switch from a sleep state to an active state.
  • the wake-up request received by the base station 300 may be initiated by the terminal itself, for example, the terminal needs to perform services such as data access and voice call, or the network may notify the terminal by using the camping cell, and the terminal determines the backward-going base station. 300 wakeup request sent.
  • the base station 300 When the base station 300 receives the wake-up request, it switches from the dormant state to the working state, so that when the base station 300 is required to provide the data and/or voice service, the terminal wakes up the base station 300 in the dormant state in time to ensure the real-time communication of the terminal and improve. The performance of the base station 300 is working.
  • the data processing module 302 controls the base station 300 to switch from the sleep state to the working state when the data interaction module 304 receives the wakeup request;
  • the data processing module 302 controls the base station 300 to switch from the sleep state to the working state if the data interaction module 304 receives the wakeup request from the plurality of terminals within a preset time period; and/or the base station
  • the method 300 further includes an interference determining module, configured to determine whether the interference is determined by the data processing module 302, and the data processing module 302 is in the event that the interference determining module determines that it does not cause interference to other base stations 300. The state is switched to the working state.
  • the base station 300 can receive a wake-up request, that is, switch from the sleep state to the active state to ensure that the terminal performs communication normally.
  • the base station 300 may be received within a preset time period.
  • the wake-up request from multiple terminals is switched from the sleep state to the active state, it is ensured that there are enough service requests after the base station 300 is woken up, and at the same time, the number of base stations 300 that are awake is reduced, and the multiple base stations 300 are avoided.
  • the interference also reduces the power consumption of the base station 300.
  • the base station 300 can also be switched from the sleep state to the active state upon receiving the wake-up request and determining that it does not cause interference to the other base stations 300, thereby improving the performance of the base station 300.
  • the interference determining module is configured according to the real-time status information of the specified base station 300 acquired by the data interaction module 304, and/or according to the data receiving module 304 from the designated base station 300.
  • the characteristic parameter of the signal determines whether the base station 300 causes interference to other base stations 300; wherein the interference determining module is in a dormant state at the designated base station 300, and/or the value of the feature parameter is less than or equal to a pre- In the case of the parameter threshold, it is determined that the base station 300 does not cause interference to the designated base station 300.
  • the base station 300 can be switched from the sleep state to the working state when it needs to be woken up and it is determined that it does not cause interference to other base stations 300. , the interference between the base stations 300 is minimized.
  • the obtained real-time status information of the designated base station 300 includes the characteristic parameters of the specified base station 300 that are in the dormant/operating state, and the obtained characteristic parameters from the designated base station 300 may reflect the signal strength and the signal-to-noise ratio of the base station 300, or other signals reflecting the base station 300. Characteristic Parameters.
  • the base station 300 can determine whether the state switching can be performed in other manners. For example, when the base station 300 is in a dormant state, the base station 300 determines that there is no impact and can return to the working state. When the number of base stations in the working state of the base station 300 or the number of base stations in the working state is large (greater than or equal to a preset number threshold), it is determined that the state switching of the base station 300 will affect other base stations and cannot be restored. To work status.
  • the data processing module 302 is further configured to: generate a wakeup notification message, where the wakeup notification message includes at least an identifier of the base station 300 and an identifier of a sender of the wakeup request, and The wakeup notification message is used to indicate that the base station 300 is to be switched from the sleep state to the working state according to the request of the sender;
  • the data interaction module 304 is further configured to: broadcast the wakeup notification message, and/or receive To the wakeup notification message from the other base station 300, wherein the data processing module 302 controls the base station 300 to sleep from the sleep when the data interaction module 304 sends the wakeup notification message and does not receive the corresponding response message.
  • the state is switched to the working state; the data processing module 302, after the data interaction module 304 receives the response message, negotiates with the sender of the response message through the data interaction module 304 to determine the final Base station 300 that switches from a sleep state to an active state; the data interaction module 304 In the event that a wakeup notification message from other base stations 300 is received, a response message corresponding to the data processing module 302 is also returned or not responded.
  • the base station 300 After the base station 300 receives the wake-up request, generating and broadcasting the wake-up notification message, it is possible to confirm whether there is another base station 300 that receives the same wake-up request and waits for the handover working state, and determines that there are no other base stations. 300 waits for the handover working state, and switches from the sleep state to the working state, and when it is determined that other base stations 300 also receive the same wake-up request and switch the working state, the base station 300 During the negotiation, the base station 300 that finally switches from the dormant state to the active state is determined, the number of the awake base stations 300 is reduced, the interference between the base stations 300 is reduced, and an optimization scheme for waking up the base station 300 is implemented.
  • the base station 300 capable of providing the optimum signal quality for the terminal transmitting the wake-up request, and/or the base station 300 receiving the most wake-up request, and the like may be selected.
  • the negotiation between the base stations 300 may be through coordination of the backhaul link or coordination of information over the air interface.
  • the data processing module 302 is further configured to: parse information of all target base stations 300 included in the wake-up request, and send the wake-up request to another base station 300.
  • the data interaction module 304 directly negotiates with the other base stations 300 to determine the base station 300 that eventually switches from the sleep state to the active state.
  • the base station 300 when the base station 300 receives the wake-up request sent by the terminal, it does not know whether there are other base stations that receive the same wake-up request, and does not know which other base stations have received the wake-up request. Therefore, by indicating other base stations that receive the wake-up request in the wake-up request, the base stations can directly negotiate, so that the negotiation process is more purposeful, which helps to shorten the delay caused by the negotiation process.
  • the wake-up request may further include other information of the foregoing base station, for example, the terminal may measure the performance indicator of the base station according to the pilot information sent by the base station (such as RSRP (Reference Signal Receiving Power) in the protocol specification). And / or RSRQ (Reference Signal Receiving Quality), and transmit the measured performance indicators of the plurality of base stations to the plurality of base stations simultaneously with the wake-up request, so that the plurality of base stations according to the performance indicators of all the base stations that receive the wake-up request
  • the base station that ultimately needs to switch from the dormant state to the active state is determined to ensure that the awakened base station has good performance.
  • the data interaction module 304 receives the wake-up request on a specified time-frequency resource, and the wake-up request includes a specified preamble sequence.
  • the base station 300 is configured to receive the wake-up request on the specified time-frequency resource, and includes the specified preamble sequence in the wake-up request, so that the terminal can accurately locate the base station 300 that needs to wake up, avoiding simultaneously waking up multiple
  • the base station 300 causes mutual interference.
  • the wakeup request is received on the resource, and the base station 300 that needs to wake up is accurately located by the preamble sequence in the wakeup request.
  • preamble sequence "pilot information”, “reference symbol” and the like are merely different expressions of the same concept, which are substantially identical and equivalent.
  • the data interaction module 304 sends the time-frequency resources available to itself and the available preamble sequence set before the data processing module 302 controls the base station 300 to switch from the working state to the dormant state.
  • the time-frequency resources available to the base station 300 and the set of available preamble sequences can uniquely identify the base station 300, and enable the base station 300 to transmit its own available time-frequency resources before switching from the working state to the dormant state.
  • the set of available preamble sequences so that the other base stations 300 and the terminal determine the base station 300 that enters the dormant state according to the received time-frequency resource and the preamble sequence set.
  • the terminal needs to wake up the designated base station 300, only the designated base station 300 is located.
  • the waking request including the preamble sequence available to the designated base station 300 is transmitted on the time-frequency resource, so that the designated base station 300 can be awake accurately.
  • the other base stations 300 can also determine the base station 300 that enters the dormant state according to the received time-frequency resources and the preamble sequence set, so that it can be determined that the base station 300 entering the sleep state no longer interferes.
  • the data interaction module 304 sends the pilot information including the set of preamble sequences available to the base station 300 when the base station 300 is in a dormant state.
  • the terminal when the terminal sends the wake-up request, it sends on the specified time-frequency resource, and when the base station 300 is in the dormant state, it sends the set of preamble sequences available to itself, so that multiple on the same time-frequency resource
  • the base stations can be distinguished by the available preamble sequences (sets), so that when the terminal wakes up the base station, by selecting the time-frequency resources and the preamble sequence, only the base station specified therein can be accurately awakened to avoid excessive wake-up at the same time.
  • Base stations (such as all base stations that use the same time-frequency resource) cause interference between base stations. 4 shows a flow chart of a cell interference coordination method in accordance with another embodiment of the present invention.
  • a cell interference coordination method includes: Step 402: A terminal receives pilot information sent by a base station in a dormant state; Step 404: The terminal according to the pilot information Generating a wake-up request, and sending the wake-up request to the base station, where the wake-up request is used to request the base station to switch from a sleep state to an active state.
  • the terminal may be configured to generate a wake-up request according to the received pilot information sent by the base station, so that the terminal needs the base station to provide the data and/or voice service. Awakening the designated base station in the dormant state, avoiding the terminal waking up multiple base stations at the same time, causing interference between multiple base stations.
  • the method further includes: the terminal actively generating the wakeup request; or the terminal generating the wakeup request according to the received trigger request, where the trigger request is by a wireless mobile communication network
  • the cell camped by the terminal is sent to the terminal.
  • the state in which the terminal is located includes an active state and an idle state.
  • the base station When the terminal is in an active state, the base station is required to provide data and/or voice services, and the wake-up message may be actively generated (either initiated by the user, or by the terminal).
  • the application is initiated based on the requirement) to wake up the sleeping base station; when the terminal is in the idle state, if it receives the trigger request sent by the resident cell (such as load balancing based network switching requirement), the corresponding wakeup can be generated. Request to wake up the sleeping base station.
  • the method further includes: the terminal measuring the received pilot information; wherein, when the measurement result indicates that the value of the feature parameter of the pilot information is better than a preset parameter threshold, The terminal sends the wakeup request to the corresponding base station; or according to the value of the feature parameter corresponding to all the pilot information indicated by the measurement result, the terminal selects a specified number of optimal pilot information from the terminal, and correspondingly The base station sends the wake-up request; or in all the pilot information whose value of the corresponding feature parameter is better than the preset parameter threshold, the terminal selects a specified number of optimal pilot information, and sends the specified pilot information to the corresponding base station. Wake up the request.
  • the terminal may measure the characteristic parameters of the base station according to the pilot information sent by the base station, such as RSRP (Reference Signal Receiving Power) and/or RSRQ (Reference Signal Receiving Quality) in the protocol specification. Reference signal reception quality).
  • the terminal may send a wake-up request to the base station corresponding to the pilot information whose value of the feature parameter is better than the preset parameter threshold, so as to ensure good communication quality when the base station is awake for communication; or according to the value of the characteristic parameter to the specified number of guides
  • the base station corresponding to the frequency information sends a wake-up request.
  • the specified number of pilot information may also be selected from the pilot information whose value of the feature parameter is better than the preset parameter threshold, and the wake-up request is sent to the corresponding base station. If the terminal sends a wake-up request to multiple base stations at the same time, when receiving the wake-up request, the multiple base stations can determine the final wake-up base station by negotiation to ensure the minimum number of wake-up base stations and avoid interference between multiple base stations.
  • the wakeup request may be a RACH (Random Access Channel), an SRS (Sounding Reference Signal), or the like.
  • the method further includes: the terminal generating, according to the time-frequency resource available to the base station and the available preamble sequence set obtained from the camped cell, the wake-up request including the specified preamble sequence, where And sending the wake-up request at the available time-frequency resource.
  • the time-frequency resources available to the base station and the set of available preamble sequences can be uniquely identified by the base station, so that the terminal transmits the preamble sequence including the designated base station on the time-frequency resources available to the designated base station.
  • the set wake-up request can make the terminal accurately locate the base station that needs to wake up, avoiding waking up multiple base stations at the same time and causing mutual interference.
  • the method further includes: the terminal parsing, from the received pilot information sent by the base station, a preamble sequence set available by the base station.
  • the pilot information sent by the base station in the dormant state includes a set of preamble sequences that are available to the user, so as to uniquely identify itself on the specified time-frequency resource, so that the terminal wakes up the base station.
  • the parsed set of preamble sequences only the designated base stations in the same time-frequency resource are woken up, so as to avoid waking up too many base stations at the same time (such as all base stations using the same time-frequency resource) to cause interference between the base stations.
  • the method further includes: the terminal receiving the pilot information sent by the base station, acquiring an identifier of the base station from the pilot information, and querying from a preset table to a corresponding And the set of preamble sequences that are available to the base station, where the identifier is at least associated with the identifier of the base station and a set of preamble sequences available to the base station.
  • the identifier of the base station may be a PCI (Physical Cell ID), and the preset table may store the PCI of each base station in association with the set of preamble sequences available to the base station, so that the terminal is configured according to
  • the identifier of a certain base station included in the received pilot information directly queries the corresponding set of available preamble sequences without querying other base stations.
  • the preset table may only correspond to a certain part or a part of the base station, thereby helping to improve the query efficiency of the terminal; the preset table may also correspond to all the base stations, thereby helping to improve the successful query of the terminal.
  • the probability of a set of preamble sequences may be a PCI (Physical Cell ID)
  • PCI Physical Cell ID
  • Figure 5 shows a block diagram of a terminal in accordance with another embodiment of the present invention.
  • the terminal 500 includes: a data interaction module 502, configured to receive pilot information sent by a base station in a dormant state, and send a wakeup request generated by the data processing module 504;
  • the data processing module 504 is configured to generate the wakeup request according to the pilot information, where the wakeup request is used to request the base station to switch from a sleep state to an active state.
  • the terminal 500 can generate the wake-up request according to the received pilot information sent by the base station, so that the terminal 500 needs the base station to provide data and/or voice.
  • the designated base station in the dormant state is woken up, and the terminal 500 is prevented from simultaneously waking up multiple base stations, thereby causing interference between multiple base stations.
  • the data processing module 504 actively generates the wakeup request; or the data processing module 504 generates the wakeup request according to the trigger request received by the data interaction module 502, where The trigger request is sent by the wireless mobile communication network to the terminal 500 through a cell in which the terminal 500 camps.
  • the state in which the terminal 500 is located includes an active state and an idle state.
  • the base station is required to provide data and/or voice services, and the wake-up message may be actively generated (either initiated by the user, or by the user).
  • the application in the terminal 500 initiates based on the requirement to wake up the dormant base station; when the terminal 500 is in the idle state, if it receives a trigger request sent by the cell in which it resides (such as load balancing based network switching demand), then A corresponding wake-up request can be generated to wake up the sleeping base station.
  • the data processing module 504 is further configured to measure the received pilot information, where the data interaction module 502 indicates the value of the characteristic parameter of the pilot information in the measurement result. If the parameter is better than the preset parameter threshold, the waking request is sent to the corresponding base station; or the data processing module 504 selects the specified quantity according to the value of the feature parameter corresponding to all the pilot information indicated by the measurement result.
  • the optimal pilot information, and the data interaction module 502 sends the wake-up request to the corresponding base station; or the data processing module 504 uses all the pilots whose corresponding feature parameters are better than the preset parameter threshold. In the information, a specified number of optimal pilot information is selected, and the wake-up request is sent by the data interaction module 502 to the corresponding base station.
  • the terminal 500 may measure the characteristic parameters of the base station according to the pilot information sent by the base station, such as RSRP (Reference Signal Receiving Power) and/or RSRQ (Reference Signal Receiving Quality) in the protocol specification. , reference signal reception quality).
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • the 500 may send a wake-up request to the base station corresponding to the pilot information whose value of the feature parameter is better than the preset parameter threshold, so as to ensure good communication quality when the base station is awake for communication; or according to the value of the characteristic parameter to a specified number of guides
  • the base station corresponding to the frequency information sends a wake-up request.
  • the specified number of pilot information may also be selected from the pilot information whose value of the feature parameter is better than the preset parameter threshold, and the wake-up request is sent to the corresponding base station.
  • the multiple base stations may determine the final wake-up base station by negotiation to ensure the minimum number of wake-up base stations and avoid interference between multiple base stations.
  • Wake up The request may be a RACH (Random Access Channel), an SRS (Sounding Reference Signal), or the like.
  • the data interaction module 502 is further configured to: obtain, by the base station, the time-frequency resource and the available preamble sequence set that are available from the cell where the terminal 500 resides; the data processing module 504 Also used to generate the wake-up request containing the specified preamble sequence for transmission by the data interaction module 502 at the available time-frequency resources.
  • the time-frequency resources available to the base station and the set of available preamble sequences can uniquely identify the base station, so that the terminal 500 can transmit the preamble including the available base station on the time-frequency resources available to the designated base station.
  • the wake-up request of the sequence set can enable the terminal 500 to accurately locate the base station that needs to wake up, avoiding waking up multiple base stations at the same time and causing mutual interference.
  • the data processing module 504 is further configured to parse, from the pilot information received by the data interaction module 502, the pilot sequence available to the base station. .
  • the pilot information sent by the base station in the dormant state includes a set of preamble sequences that are available to the user, so as to uniquely identify itself on the specified time-frequency resource, so that the terminal 500 wakes up the base station according to the
  • the parsed set of preamble sequences only wakes up the designated base station in the same time-frequency resource, avoiding waking up too many base stations at the same time (such as all base stations using the same time-frequency resource) to cause interference between the base stations.
  • the data processing module 504 is further configured to use the data interaction module.
  • the identifier of the base station may be a PCI (Physical Cell ID), and the preset table may store the PCI of each base station in association with the set of preamble sequences available to the base station, so that the terminal is configured according to
  • the identifier of a certain base station included in the received pilot information directly queries the corresponding set of available preamble sequences without querying other base stations.
  • the preset table may only correspond to a certain part or a part of the base station, thereby helping to improve the query efficiency of the terminal 500.
  • the preset table may also correspond to all the base stations, thereby helping to improve the terminal 500 successfully querying.
  • the probability of a set of available preamble sequences may be a PCI (Physical Cell ID)
  • PCI Physical Cell ID
  • FIG. 6 shows a specific flow chart of a cell interference coordination method according to an embodiment of the present invention.
  • a cell interference coordination method includes:
  • Step 602 in order to reduce interference caused to other base stations, and the base station switches from a normal working state to a sleep state, the base station stops transmitting the synchronization and broadcast messages. However, because the sending of the message is stopped, the terminal cannot search for the existence of the base station, and the base station cannot be awake when needed. Therefore, the base station still needs to send the cell pilot information in the dormant state, so that the terminal can pass the base station. The transmitted pilot information is searched for the dormant base station, ensuring that the terminal can wake up the sleeping base station in time when data transmission and/or voice service is required.
  • the pilot information sent by the base station may be a cell-specific pilot CRS, or may be part of the CRS that does not cause interference or interference to other base stations, and may also be other pilot information supported in the protocol (for example, CSI-RS) or some of the information, but it is necessary to ensure that the interference caused to other base stations does not exceed a certain interference threshold.
  • CRS cell-specific pilot
  • CSI-RS other pilot information supported in the protocol
  • the base station performs state switching in order to reduce interference to other base stations, in order to ensure that the terminal in the small area can operate normally, the base station can still determine whether to enter the sleep state according to the specific situation.
  • the base station can switch to the sleep state when its state satisfies any of the following conditions:
  • the base station may determine, by using a plurality of manners, whether there are other cells for a certain terminal to camp on. For example, the base station may determine, by using the measurement report reported by the terminal, that a cell with a better signal exists around the terminal (for example, the signal power is greater than Or equal to the preset power threshold, or the signal quality is greater than or equal to the preset quality threshold), determining that the terminal can camp on the cell; or, the base station can acquire the location of the terminal, so that when there is a geographically close cell around the terminal , the terminal is considered to be resident in the cell; or other methods are used.
  • the base station may determine, by using a plurality of manners, whether there are other cells for a certain terminal to camp on. For example, the base station may determine, by using the measurement report reported by the terminal, that a cell with a better signal exists around the terminal (for example, the signal power is greater than Or equal to the preset power threshold, or the signal quality is greater than or equal to the preset quality threshold),
  • the base station can also send its own available time-frequency resources and available preamble sequence sets, so that other surrounding base stations can receive the information for the terminal to wake up the base station.
  • the base station may further send pilot information including a set of preamble sequences available to itself after entering the dormant state, so that the terminal can directly obtain the foregoing information.
  • the time-frequency resources available to the base station and the set of available preamble sequences can uniquely identify the base station, by enabling the base station to transmit its available time-frequency resources and available preamble sequence sets before switching from the working state to the dormant state,
  • the other base stations and the terminal determine the base station that enters the dormant state according to the received time-frequency resource and the preamble sequence set.
  • the terminal needs to wake up the designated base station, only the time-frequency resource where the designated base station is located needs to be sent, and the designated base station is included.
  • the wake-up request of the preamble sequence can wake up the designated base station accurately; and other base stations can also determine the base station entering the dormant state according to the received time-frequency resource and the preamble sequence set, so that it can determine that the user enters the sleep state.
  • the base station no longer generates interference; and when the base station is in the dormant state, it sends its own set of preamble sequences to make different identifiers for multiple base stations on the specified time-frequency resource, so that only the designated base station is woken up when the base station is awakened. , avoid simultaneous awakening in the same When caused by interference between base station on the frequency of all resources.
  • Step 604 The terminal measures, according to the received pilot information, a performance parameter of the dormant cell, where the measured performance parameter may be RSRP (Reference Signal Receiving Power) and/or RSRQ (reference Signal) in the protocol specification.
  • RSRP Reference Signal Receiving Power
  • RSRQ reference Signal
  • Receiving Quality, reference signal reception quality can also be other parameters that can reflect the cell signal strength and signal to noise ratio.
  • Step 606 Determine whether the terminal has a service request, and needs to wake up the base station. If yes, go to step 608. Otherwise, go back to step 604; the service request of the active terminal is initiated by itself, such as data access, voice call, etc.
  • the service request of the terminal in the idle state is a service request generated according to a trigger request (such as a load balancing based network switching requirement) sent by the camping cell.
  • Step 608 When determining that the terminal has a service request, the terminal sends a wake-up request to the base station.
  • the base station may be awake as little as possible. Therefore, the terminal may be better than the preset parameter threshold.
  • the base station corresponding to the frequency information sends a wake-up request to ensure good communication quality when waking up the base station for communication.
  • the terminal may determine the communication quality of the base station according to the performance parameters of the base station measured in step 604.
  • the terminal may also arrange the values of the feature parameters, select (for example, select from the optimal to the worst order) a specified number of base stations corresponding to the pilot information, and send a wake-up request; It is also possible to send a wake-up request only to the base station whose value of the feature parameter is optimal.
  • the wakeup request may be a RACH (Random Access Channel), an SRS (Sounding Reference Signal), or the like.
  • the wake-up request information sent by the terminal includes a preamble sequence of the designated base station, so that the terminal can accurately locate the base station that needs to wake up, and avoid waking up multiple base stations at the same time to cause mutual interference.
  • the base station Since there may be multiple base stations on the same time-frequency resource, and the preamble sequences of the base stations on different time-frequency resources may be the same, in order to accurately locate the base station that the terminal needs to wake up, the base station may be received on the specified time-frequency resource. Wake up the request and accurately locate the base station that needs to wake up through the preamble sequence in the wakeup request.
  • Step 610 After receiving the wakeup request sent by the terminal, the base station determines whether to switch to the working state. If the handover working state is determined, step 612 is performed; otherwise, the process returns to step 602.
  • the base station needs to perform some determination steps after receiving the wake-up request, and then can determine whether to perform the state switching. For example, the base station may perform state switching immediately after receiving the wake-up request, or may switch from the sleep state to the working state when it is determined that the wake-up request from multiple terminals is received within the preset time period, thereby ensuring After the base station is woken up, there are enough service requests, and since the number of base stations that wake up is reduced, interference between multiple base stations is avoided, and the power consumption of the base station is also reduced.
  • the base station can also switch from the sleep state to the working state when receiving the wake-up request and determining that it does not cause interference to other base stations, thereby improving the performance of the base station.
  • the base station can determine according to the real-time status of the surrounding base stations, and when the neighboring base stations are in the dormant state, it is determined that no interference is caused; or the base station can detect the signals of the surrounding base stations, when the signal strength is weak (less than or equal to the pre- When the parameter threshold is set, it is determined that there is no interference or the like.
  • Step 612 After the base station switches from the sleep state to the working state, the base station can normally send various messages such as broadcast and synchronization, so that the terminal can perform normal connection and message transmission, and can notify other base stations that receive the same wake-up message. These base stations do not need to perform state switching to avoid mutual interference caused by excessive base stations being woken up.
  • one or more base stations that are finally switched from the dormant state to the working state are determined by a negotiation process between multiple base stations that receive the wake-up request, thereby reducing the number of wake-up base stations as much as possible, and reducing the number of base stations.
  • Inter-channel interference an optimization scheme for waking up the base station is implemented; specifically, when negotiating between the base stations, the base station capable of providing the optimal signal quality for the terminal transmitting the wake-up request can be selected, and/or the wake-up request is received at most Base station.
  • the negotiation between the base stations may be through coordination of the backhaul link or coordination of air interface information.
  • Step 614 The terminal accesses the awake base station according to the information of the base station.
  • the terminal can determine the awakened base station according to the received broadcast, synchronization, etc. message or the special wakeup notification message sent by the base station, so that the awakened base station can be accurately accessed.
  • a program product stored on a non-transitory machine readable medium for a cell interference coordination process, the program product comprising a machine for causing a computer system to perform the following steps Execution command: After the base station switches from the working state to the sleep state, the base station stops transmitting other information except the pilot information.
  • a non-transitory machine readable medium storing a program product for a cell interference coordination process, the program product comprising machine executable instructions for causing a computer system to perform the following steps: After the base station switches from the active state to the sleep state, the base station stops transmitting other information than the pilot information.
  • a machine readable program the program causing a machine to perform the cell interference coordination method according to any one of the above aspects.
  • a storage medium storing a machine readable program, wherein the machine readable program causes a machine to perform the cell interference coordination method according to any one of the technical solutions described above.
  • the present invention proposes a new cell interference coordination scheme, which can enable a base station to transmit pilot information when entering a dormant state, while avoiding interference to other base stations, and enabling the terminal to be based on the received pilot information. Awaken the sleeping base station when needed.

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Abstract

本发明提供了一种小区干扰协调方法和一种基站，其中，小区干扰协调方法包括：基站在从工作状态切换至休眠状态之后，停止发送除导频信息之外的其他信息。本发明还提出了一种小区干扰协调方法和一种终端。通过本发明的技术方案，可以使基站在进入休眠状态时发送导频信息，在避免对其他基站造成干扰的同时，使得终端能够根据接收到的导频信息，在需要时唤醒休眠的基站。

Description

小区干扰协调方法、 基站和终端 技术领域
本发明涉及通信技术领域， 具体而言， 涉及小区干扰协调方法、 基站和终端。 背景技术
在 3GPP Rel-11 ( 3 GPP Release- 11 ) 及之前版本中， 针对 Pico ( ^：基站） 和 Femto (家庭基站） 有过一些干扰消除的课题研究。 Pico 提供了一种热点业务分流的 方案， 研究发现由于与宏基站相比， Pico 基站的发送功率较小， 业务分流的效果不明 显， 且 Pico 的负载只有 60%左右。 因此， 3GPP 提出了小区覆盖扩展 CRE ( Cell Range Expansion ) 技术， 通过设置接入偏置量 （Bias ) , 使得终端优先接入 Pico 小 区。 但是 CRE 区域中接入 Pico服务的终端接收到来自宏基站的干扰功率很大， 为此 3GPP开展了 Eicic和 Feicic两个课题， 通过 ABS ( Almost Blank Subframe ) 技术时间 复用了宏基站和 Pico的控制信号， 保证了控制信道的可靠性。
Femto是一种用户布置的家庭基站， 通过 ADSL等方式接入到核心网， 在室内的 部署位置比较随意， 没有经过运营商的网络规划， 可能会出现多个 Femto非常接近的 场景。 同时 Femto往往釆用 CSG ( Close Subscribe Group ) 配置， 即只为授权用户提 供服务， Femto 对邻近的非授权用户的干扰往往很大。 针对这个问题， 3GPP 提供了 Femto功率控制、 控制信道频率复用等干扰管理方式来解决干扰问题， 但在 Femto基 站密度大的区域仍是不能很好工作。
为了提供更好的覆盖和业务分流， 多个微小区可能被密集部署， 相互间的干扰非 常大。 部分公司提出了釆用小区休眠 （Cell ON/OFF ) 的方式， 将暂时没有数据传输 的小区关闭， 以消除干扰。
但是， 直接关闭没有数据传输的小区， 使得终端无法搜索到处于休眠状态的小 区， 也就无法在需要进行数据传输时唤醒这些小区。 发明内容
本发明正是基于上述技术问题至少之一， 提出了一种新的小区干扰协调方案， 可 以使基站在进入休眠状态时发送导频信息， 在避免对其他基站造成干扰的同时， 使得 终端能够根据接收到的导频信息， 在需要时唤醒休眠的基站。
有鉴于此， 本发明提出了一种小区干扰协调方法， 包括： 基站在从工作状态切换 至休眠状态之后， 停止发送除导频信息之外的其他信息。
在该技术方案中， 通过使基站从工作状态切换至休眠状态后， 停止发送除导频信 息之外的其他信息， 可以避免暂时不需提供数据和 /或语音服务的基站发送的上述其他 信息对其他基站造成的干扰， 同时使得终端可以通过基站发送的导频信息搜索到处于 休眠状态的基站， 确保了终端在需要进行数据传输和 /或语音服务时能够及时唤醒休眠 的基站。
在上述技术方案中， 优选地， 还包括： 所述基站在确定自身满足预设的状态切换 条件时， 从工作状态切换至休眠状态； 其中， 所述状态切换条件包括： 小区内不存在 激活状态和空闲状态的终端； 或小区内不存在激活状态的终端； 或小区内仅存在空闲 状态的终端， 且存在用于所述空闲状态的终端进行驻留的其他小区； 或小区内存在激 活状态的终端和空闲状态的终端， 且存在用于所述激活状态的终端和所述空闲状态的 终端进行驻留的其他小区。
在该技术方案中， 通过对基站对应的小区内的终端的状况进行统计， 以确保基站 的休眠对于终端的影响尽可能小， 保证用户得到良好的使用体验。
在上述技术方案中， 优选地， 还包括： 所述基站仅在部分天线端口发送所述导频 信息。
在该技术方案中， 在休眠状态下， 基站可以正常发送导频信息； 但由于导频信息 造成的干扰较大， 因而通过在基站休眠时仅在部分天线端口发送导频信息， 可以在确 保终端能够搜索到休眠基站的情况下， 降低基站对其他未休眠小区造成的干扰。 具体 地， 比如说能够用于发送 CRS 导频信息的天线端口包括 0、 1、 2、 3 , 那么可以选择 其中的任意一个、 两个或三个， 以用于发送 CRS 导频信息， 则相对于使用所有天线 端口发送导频信息时， 上述方案显然能够有效降低对其他基站的干扰。
在上述技术方案中， 优选地， 当所述导频信息为小区专用导频时， 所述部分天线 端口的序号为 2和 /或 3。
在该技术方案中， 基站在选择部分天线端口发送导频信息时， 可以优先选择发送 的导频信息对其他未休眠小区不造成干扰或造成干扰最小的天线端口， 以减少对其他 未休眠小区造成的干扰。 当导频信息为小区专用导频时， 选择序号为 2和 /或 3的天线 端口可以有效降低导频信息对其他未休眠小区造成的干扰， 从而提高其他未休眠小区 的通信质量。
在上述技术方案中， 优选地， 还包括： 所述基站接收唤醒请求， 并从休眠状态切 换至工作状态。
在该技术方案中， 基站接收到的唤醒请求可以是终端自身发起的， 如终端需要进 行数据访问、 语音呼叫等服务， 也可以是网络通过驻留小区通知终端， 由终端判断后 向休眠基站发送的唤醒请求。 通过在基站接收到唤醒请求时， 从休眠状态切换至工作 状态， 使得终端在需要基站提供数据和 /或语音服务时， 及时唤醒处于休眠状态的基 站， 确保终端通信的实时性， 提高了基站工作的性能。
在上述技术方案中， 优选地， 还包括： 所述基站一旦接收到所述唤醒请求， 就从 休眠状态切换至工作状态； 或所述基站在预设时间段内接收到来自多个终端的唤醒请 求时， 从休眠状态切换至工作状态； 和 /或所述基站在确定自身不会对其他基站造成干 扰的情况下， 从休眠状态切换至工作状态。
在该技术方案中， 基站可以在接收到唤醒请求， 即从休眠状态切换至工作状态， 以确保终端正常进行通信。 优选地， 由于终端在发送唤醒请求时， 可能同时对多个基 站进行发送， 为了避免被唤醒的基站过多而造成相互之间的干扰， 因此可以使基站在 预设时间段内接收到来自多个终端的唤醒请求时， 才从休眠状态切换至工作状态， 确 保基站被唤醒之后有足够多的业务请求， 同时由于减少了唤醒的基站数量， 避免了多 个基站之间的干扰， 也降低了基站的能耗。 更进一步地， 还可以使基站在收到唤醒请 求并确定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状态， 从而提高基 站的工作性能。
在上述技术方案中， 优选地， 所述基站判断自身是否会对其他基站造成干扰的过 程包括： 所述基站获取指定基站的实时状态信息， 和 /或获取来自所述指定基站的信号 的特征参数； 其中， 若所述指定基站处于休眠状态， 和 /或所述特征参数的数值小于或 等于预设的参数阈值， 则判定所述基站不会对所述指定基站造成干扰。
在该技术方案中， 通过对基站自身是否会对其他基站造成干扰的判断， 可以使基 站在需要被唤醒且判定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状 态， 最大程度上降低了基站之间的干扰。 获取的指定基站的实时状态信息包括该指定 基站处于休眠 /工作状态， 获取的来自指定基站的特征参数， 可以是反映基站信号强度 和信噪比， 或者是其他反映基站信号的特征参数。
在上述技术方案中， 优选地， 在所述基站接收到所述唤醒请求之后， 还包括： 所 述基站生成并广播唤醒通知消息， 所述唤醒通知消息中至少包含所述基站的标识和所 述唤醒请求的发送方的标识， 且所述唤醒通知消息用于表明所述基站将要根据所述发 送方的请求， 从休眠状态切换至工作状态； 和 /或所述基站接收到来自其他基站的唤醒 通知消息； 其中， 若所述基站发送所述唤醒通知消息且没有接收到相应的响应消息， 则从休眠状态切换至工作状态； 若所述基站接收到所述响应消息， 则与所述响应消息 的发送方进行协商， 以确定最终从休眠状态切换至工作状态的基站； 若所述基站接收 到来自其他基站的唤醒通知消息， 则返回相应的响应消息或不响应。
在该技术方案中， 通过在基站接收到唤醒请求后， 生成并广播唤醒通知消息， 可 以对是否有接收到相同的唤醒请求并等待切换工作状态的其他基站进行确认， 在确定 没有其他基站等待切换工作状态时， 从休眠状态切换至工作状态， 而在确定有其他基 站也接收到相同的唤醒请求并切换工作状态时， 通过基站之间的协商， 确定最终从休 眠状态切换至工作状态的基站， 减少了唤醒基站的数量， 降低了基站之间的干扰， 实 现了唤醒基站的最优化方案。 具体来说， 在基站之间进行协商时， 可以选择能够为发 送唤醒请求的终端提供最优信号质量的基站， 和 /或接收到唤醒请求最多的基站等。 基 站之间的协商可以是通过回传链路的协调， 也可以是通过空中接口信息的协调。
在上述技术方案中， 优选地， 所述唤醒请求中包含所有目标基站的信息， 则当所 述唤醒请求还被发送至其他基站时， 所述小区干扰协调方法还包括： 所述基站直接与 所述其他基站进行协商， 以确定最终从休眠状态切换至工作状态的基站。
在该技术方案中， 由于基站在接收到终端发送的唤醒请求时， 并不了解是否存在 其他接收到相同唤醒请求的基站， 也不了解其他接收到唤醒请求的为哪些基站。 因 此， 通过在唤醒请求中标明其他接收到唤醒请求的基站， 使得这些基站之间可以直接 进行协商， 使协商过程更具有目的性， 有助于缩短协商过程所造成的时延。
在上述技术方案中， 优选地， 还包括： 所述基站在指定的时频资源上接收所述唤 醒请求， 且所述唤醒请求包含指定的前导序列。
在该技术方案中， 通过使基站在指定的时频资源上接收唤醒请求， 且在唤醒请求 中包含指定的前导序列， 使得终端能够精确地定位到需要唤醒的基站， 避免同时唤醒 多个基站而造成相互干扰。 在同一个时频资源上可能存在多个基站， 而在不同时频资 源上的基站的前导序列可能相同， 因此为了精确定位终端需要唤醒的基站， 可以使得 基站在指定的时频资源上接收唤醒请求， 并通过唤醒请求中的前导序列对需要唤醒的 基站进行精确定位。 当然， 本领域技术人员应该理解的是： 在通信领域中， "前导序 列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说法， 其实质上是相 同、 等价的。
在上述技术方案中， 优选地， 还包括： 所述基站在从工作状态切换至休眠状态之 前， 发送自身可用的时频资源和可用的前导序列集合。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 通过使基站在从工作状态切换至休眠状态之前， 发送自身可用的时频 资源和可用的前导序列集合， 可以使得其他基站和终端根据接收到的时频资源和前导 序列集合确定进入休眠状态的基站， 在终端需要唤醒指定基站时， 只需在该指定基站 所在的时频资源上发送包含有该指定基站可用的前导序列的唤醒请求， 即可准确地对 该指定基站进行唤醒。 而其他基站也可以根据接收到的时频资源和前导序列集合确定 进入休眠状态的基站， 从而可以判定自身对该进入休眠状态的基站不再产生干扰。
在上述技术方案中， 优选地， 还包括： 所述基站在休眠状态时发送的所述导频信 息中包含自身可用的前导序列集合。
在该技术方案中， 终端在发送唤醒请求时， 是在指定的时频资源上进行发送， 通 过使基站在休眠状态时发送自身可用的前导序列集合， 使得在相同时频资源上的多个 基站之间， 可以通过可用的前导序列 （集合） 进行区分， 使得终端在唤醒基站时， 通 过对时频资源和前导序列的选择， 只对其中指定的基站进行精确地唤醒， 避免同时唤 醒过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
根据本发明的另一方面， 还提出了一种基站， 包括： 数据处理模块， 用于控制所 述基站从工作状态切换至休眠状态； 数据交互模块， 用于在所述基站处于休眠状态 时， 停止发送除导频信息之外的其他信息。
在该技术方案中， 通过使基站从工作状态切换至休眠状态后， 停止发送除导频信 息之外的其他信息， 可以避免暂时不需提供数据和 /或语音服务的基站发送的上述其他 信息对其他基站造成的干扰， 同时使得终端可以通过基站发送的导频信息搜索到处于 休眠状态的基站， 确保了终端在需要进行数据传输和 /或语音服务时能够及时唤醒休眠 的基站。
在上述技术方案中， 优选地， 所述数据处理模块还用于： 判断所述基站是否满足 预设的状态切换条件， 且在判断结果为满足的情况下， 控制所述基站从工作状态切换 至休眠状态； 其中， 所述状态切换条件包括： 小区内不存在激活状态和空闲状态的终 端； 或小区内不存在激活状态的终端； 或小区内仅存在空闲状态的终端， 且存在用于 所述空闲状态的终端进行驻留的其他小区； 或小区内存在激活状态的终端和空闲状态 的终端， 且存在用于所述激活状态的终端和所述空闲状态的终端进行驻留的其他小 区。
在该技术方案中， 通过对基站对应的小区内的终端的状况进行统计， 以确保基站 的休眠对于终端的影响尽可能小， 保证用户得到良好的使用体验。
在上述技术方案中， 优选地， 所述数据交互模块仅在部分天线端口发送所述导频 信息。
在该技术方案中， 在休眠状态下， 基站可以正常发送导频信息； 但由于导频信息 造成的干扰较大， 因而通过在基站休眠时仅在部分天线端口发送导频信息， 可以在确 保终端能够搜索到休眠基站的情况下， 降低基站对其他未休眠小区造成的干扰。 具体 地， 比如说能够用于发送 CRS 导频信息的天线端口包括 0、 1、 2、 3 , 那么可以选择 其中的任意一个、 两个或三个， 以用于发送 CRS 导频信息， 则相对于使用所有天线 端口发送导频信息时， 上述方案显然能够有效降低对其他基站的干扰。
在上述技术方案中， 优选地， 当所述导频信息为小区专用导频 （ CRS , cell- specific reference signal ) 时， 所述部分天线端口的序号为 2和 /或 3。
在该技术方案中， 基站在选择部分天线端口发送导频信息时， 可以优先选择发送 的导频信息对其他未休眠小区不造成干扰或造成干扰最小的天线端口， 以减少对其他 未休眠小区造成的干扰。 当导频信息为小区专用导频时， 选择序号为 2和 /或 3的天线 端口可以有效降低导频信息对其他未休眠小区造成的干扰， 从而提高其他未休眠小区 的通信质量。
在上述技术方案中， 优选地， 所述数据交互模块还用于： 接收唤醒请求； 以及所 述数据处理模块还用于： 在所述数据交互模块接收到所述唤醒请求的情况下， 控制所 述基站从休眠状态切换至工作状态。
在该技术方案中， 基站接收到的唤醒请求可以是终端自身发起的， 如终端需要进 行数据访问、 语音呼叫等服务， 也可以是网络通过驻留小区通知终端， 由终端判断后 向休眠基站发送的唤醒请求。 通过在基站接收到唤醒请求时， 从休眠状态切换至工作 状态， 使得终端在需要基站提供数据和 /或语音服务时， 及时唤醒处于休眠状态的基 站， 确保终端通信的实时性， 提高了基站工作的性能。
在上述技术方案中， 优选地， 所述数据处理模块在所述数据交互模块一旦接收到 所述唤醒请求的情况下， 就控制所述基站从休眠状态切换至工作状态； 或所述数据处 理模块在所述数据交互模块在预设时间段内接收到来自多个终端的唤醒请求的情况 下， 控制所述基站从休眠状态切换至工作状态； 和 /或所述基站还包括干扰确定模块， 用于确定自身是否会对其他基站造成干扰， 其中， 所述数据处理模块在所述干扰确定 模块确定自身不会对其他基站造成干扰的情况下， 从休眠状态切换至工作状态。
在该技术方案中， 基站可以在接收到唤醒请求， 即从休眠状态切换至工作状态， 以确保终端正常进行通信。 优选地， 由于终端在发送唤醒请求时， 可能同时对多个基 站进行发送， 为了避免被唤醒的基站过多而造成相互之间的干扰， 因此可以使基站在 预设时间段内接收到来自多个终端的唤醒请求时， 才从休眠状态切换至工作状态， 确 保基站被唤醒之后有足够多的业务请求， 同时由于减少了唤醒的基站数量， 避免了多 个基站之间的干扰， 也降低了基站的能耗。 更进一步地， 还可以使基站在收到唤醒请 求并确定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状态， 从而提高基 站的工作性能。
在上述技术方案中， 优选地， 所述干扰确定模块根据所述数据交互模块获取的指 定基站的实时状态信息， 和 /或根据所述数据交互模块接收到的来自所述指定基站的信 号的特征参数， 确定所述基站是否会对其他基站造成干扰； 其中， 所述干扰确定模块 在所述指定基站处于休眠状态， 和 /或所述特征参数的数值小于或等于预设的参数阈值 的情况下， 判定所述基站不会对所述指定基站造成干扰。
在该技术方案中， 通过对基站自身是否会对其他基站造成干扰的判断， 可以使基 站在需要被唤醒且判定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状 态， 最大程度上降低了基站之间的干扰。 获取的指定基站的实时状态信息包括该指定 基站处于休眠 /工作状态， 获取的来自指定基站的特征参数， 可以是反映基站信号强度 和信噪比， 或者是其他反映基站信号的特征参数。
在上述技术方案中， 优选地， 所述数据处理模块还用于： 生成唤醒通知消息， 所 述唤醒通知消息中至少包含所述基站的标识和所述唤醒请求的发送方的标识， 且所述 唤醒通知消息用于表明所述基站将要根据所述发送方的请求， 从休眠状态切换至工作 状态； 所述数据交互模块还用于： 广播所述唤醒通知消息， 和 /或接收到来自其他基站 的唤醒通知消息； 其中， 所述数据处理模块在所述数据交互模块发送所述唤醒通知消 息且没有接收到相应的响应消息的情况下， 控制所述基站从休眠状态切换至工作状 态； 所述数据处理模块在所述数据交互模块接收到所述响应消息的情况下， 通过所述 数据交互模块与所述响应消息的发送方进行协商， 以确定最终从休眠状态切换至工作 状态的基站； 所述数据交互模块在接收到来自其他基站的唤醒通知消息的情况下， 还 返回所述数据处理模块相应生成的响应消息或不响应。
在该技术方案中， 通过在基站接收到唤醒请求后， 生成并广播唤醒通知消息， 可 以对是否有接收到相同的唤醒请求并等待切换工作状态的其他基站进行确认， 在确定 没有其他基站等待切换工作状态时， 从休眠状态切换至工作状态， 而在确定有其他基 站也接收到相同的唤醒请求并切换工作状态时， 通过基站之间的协商， 确定最终从休 眠状态切换至工作状态的基站， 减少了唤醒基站的数量， 降低了基站之间的干扰， 实 现了唤醒基站的最优化方案。 具体来说， 在基站之间进行协商时， 可以选择能够为发 送唤醒请求的终端提供最优信号质量的基站， 和 /或接收到唤醒请求最多的基站等。 基 站之间的协商可以是通过回传链路的协调， 也可以是通过空中接口信息的协调。
在上述技术方案中， 优选地， 所述数据处理模块还用于： 解析出所述唤醒请求中 包含的所有目标基站的信息， 并在所述唤醒请求还被发送至其他基站的情况下， 通过 所述数据交互模块直接与所述其他基站进行协商， 以确定最终从休眠状态切换至工作 状态的基站。
在该技术方案中， 由于基站在接收到终端发送的唤醒请求时， 并不了解是否存在 其他接收到相同唤醒请求的基站， 也不了解其他接收到唤醒请求的为哪些基站。 因 此， 通过在唤醒请求中标明其他接收到唤醒请求的基站， 使得这些基站之间可以直接 进行协商， 使协商过程更具有目的性， 有助于缩短协商过程所造成的时延。
在上述技术方案中， 优选地， 所述数据交互模块在指定的时频资源上接收所述唤 醒请求， 且所述唤醒请求包含指定的前导序列。
在该技术方案中， 通过使基站在指定的时频资源上接收唤醒请求， 且在唤醒请求 中包含指定的前导序列， 使得终端能够精确地定位到需要唤醒的基站， 避免同时唤醒 多个基站而造成相互干扰。 在同一个时频资源上可能存在多个基站， 而在不同时频资 源上的基站的前导序列可能相同， 因此为了精确定位终端需要唤醒的基站， 可以使得 基站在指定的时频资源上接收唤醒请求， 并通过唤醒请求中的前导序列对需要唤醒的 基站进行精确定位。 当然， 本领域技术人员应该理解的是： 在通信领域中， "前导序 列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说法， 其实质上是相 同、 等价的。
在上述技术方案中， 优选地， 所述数据交互模块在所述数据处理模块控制所述基 站从工作状态切换至休眠状态之前， 发送自身可用的时频资源和可用的前导序列集 合。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 通过使基站在从工作状态切换至休眠状态之前， 发送自身可用的时频 资源和可用的前导序列集合， 可以使得其他基站和终端根据接收到的时频资源和前导 序列集合确定进入休眠状态的基站， 在终端需要唤醒指定基站时， 只需在该指定基站 所在的时频资源上发送包含有该指定基站可用的前导序列的唤醒请求， 即可准确地对 该指定基站进行唤醒。 而其他基站也可以根据接收到的时频资源和前导序列集合确定 进入休眠状态的基站， 从而可以判定自身对该进入休眠状态的基站不再产生干扰。
在上述技术方案中， 优选地， 所述数据交互模块在所述基站处于休眠状态时， 发 送包含所述基站可用的前导序列集合的所述导频信息。
在该技术方案中， 终端在发送唤醒请求时， 是在指定的时频资源上进行发送， 通 过使基站在休眠状态时发送自身可用的前导序列集合， 使得在相同时频资源上的多个 基站之间， 可以通过可用的前导序列 （集合） 进行区分， 使得终端在唤醒基站时， 通 过对时频资源和前导序列的选择， 只对其中指定的基站进行精确地唤醒， 避免同时唤 醒过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
本发明还提出了一种小区干扰协调方法， 包括： 终端接收处于休眠状态的基站发 送的导频信息； 所述终端根据所述导频信息生成唤醒请求， 并向所述基站发送所述唤 醒请求， 所述唤醒请求用于请求所述基站从休眠状态切换至工作状态。
在该技术方案中， 通过使处于休眠状态的基站仍然发送导频信息， 可以使终端根 据接收到的基站发送的导频信息生成唤醒请求， 从而使得终端在需要基站提供数据和 / 或语音服务时， 对处于休眠状态的指定基站进行唤醒， 避免了终端同时唤醒多个基 站， 而造成多个基站之间的干扰。
在上述技术方案中， 优选地， 还包括： 所述终端主动生成所述唤醒请求； 或所述 终端根据接收到的触发请求， 生成所述唤醒请求， 其中， 所述触发请求由无线移动通 信网络通过所述终端驻留的小区发送至所述终端。
在该技术方案中， 终端所处的状态包括激活状态和空闲状态， 当终端处于激活状 态时， 需要基站提供数据和 /或语音服务， 则可以主动生成唤醒消息 （用户主动发起， 或由终端内的应用程序基于需求而发起） 对休眠的基站进行唤醒； 当终端处于空闲状 态时， 若接收到其驻留的小区发送的触发请求 （比如基于负载均衡的网络切换需 求） ， 则可以生成相应的唤醒请求， 以唤醒休眠的基站。
在上述技术方案中， 优选地， 还包括： 所述终端测量接收到的所述导频信息； 其 中， 当测量结果表明所述导频信息的特征参数的数值优于预设参数阈值时， 所述终端 向对应的基站发送所述唤醒请求； 或根据测量结果表明的所有的所述导频信息对应的 特征参数的数值， 所述终端从中选择指定数量的最优的导频信息， 并向对应的基站发 送所述唤醒请求； 或在对应的特征参数的数值优于预设参数阈值的所有导频信息中， 所述终端选择指定数量的最优的导频信息， 并向对应的基站发送所述唤醒请求。
在该技术方案中， 终端可以根据基站发送的导频信息对基站的特征参数进行测 量， 比如协议规范中的 RSRP ( Reference Signal Receiving Power , 参考信号接收功 率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） 。 终端可 以向特征参数的数值优于预设参数阈值的导频信息对应的基站发送唤醒请求， 以保证 在唤醒基站进行通信时具有良好的通信质量； 也可以根据特征参数的数值向指定数量 的导频信息对应的基站发送唤醒请求； 还可以从特征参数的数值优于预设参数阈值的 导频信息中选择指定数量的导频信息， 并向对应的基站发送唤醒请求。 若终端同时向 多个基站发送唤醒请求， 则多个基站在接收到唤醒请求时， 可以通过协商决定最终唤 醒的基站， 以确保唤醒基站数量的最少， 避免多个基站之间的干扰。 唤醒请求可以是 RACH ( Random Access Channel , 随机接入信道） 、 SRS ( Sounding Reference Signal , 侦听参考信号） 或类似的请求信息。
在上述技术方案中， 优选地， 还包括： 所述终端根据从驻留的小区获取的所述基 站可用的时频资源和可用的前导序列集合， 生成包含指定的前导序列的所述唤醒请 求， 并在所述可用的时频资源发送所述唤醒请求。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 因此通过使终端在指定基站可用的时频资源上发送包含有该指定基站 可用的前导序列集合的唤醒请求， 可以使终端精确定位到需要唤醒的基站， 避免同时 唤醒多个基站而造成相互之间的干扰。 当然， 本领域技术人员应该理解的是： 在通信 领域中， "前导序列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说 法， 其实质上是相同、 等价的。
在上述技术方案中， 优选地， 还包括： 所述终端从接收到的所述基站发送的所述 导频信息中， 解析出所述基站可用的前导序列集合。
在该技术方案中， 基站在休眠状态时发送的导频信息中包含了自身可用的前导序 列集合， 以在指定的时频资源上对自身进行唯一的标识， 使得终端在唤醒基站时， 根 据解析出的前导序列集合而只对相同时频资源中的指定基站进行唤醒， 避免同时唤醒 过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
在上述技术方案中， 优选地， 还包括： 所述终端接收所述基站发送的所述导频信 息， 从所述导频信息中获取所述基站的标识， 并从预设的表格查询到对应于所述标识 的、 所述基站可用的前导序列集合； 其中， 所述预设的表格中至少关联存储有所述基 站的标识和所述基站可用的前导序列集合。
在该技术方案中， 基站的标识可以为 PCI ( Physical Cell ID , 物理小区 ID ) , 预 设的表格中可以将每个基站的 PCI与该基站可用的前导序列集合相关联地存储， 以便 终端根据接收到的导频信息中包含的某个基站的标识， 直接查询对应的可用的前导序 列集合， 无需向其他基站询问。 其中， 上述预设的表格可以仅对应于某个或某一部分 基站， 从而有助于提升终端的查询效率； 预设的表格也可以对应于所有的基站， 从而 有助于提高终端成功查询到可用的前导序列集合的概率。
根据本发明的另一方面， 还提出了一种终端， 包括： 数据交互模块， 用于接收处 于休眠状态的基站发送的导频信息， 并发送数据处理模块生成的唤醒请求； 所述数据 处理模块， 用于根据所述导频信息生成所述唤醒请求， 所述唤醒请求用于请求所述基 站从休眠状态切换至工作状态。
在该技术方案中， 通过使处于休眠状态的基站仍然发送导频信息， 可以使终端根 据接收到的基站发送的导频信息生成唤醒请求， 从而使得终端在需要基站提供数据和 / 或语音服务时， 对处于休眠状态的指定基站进行唤醒， 避免了终端同时唤醒多个基 站， 而造成多个基站之间的干扰。
在上述技术方案中， 优选地， 所述数据处理模块主动生成所述唤醒请求； 或所述 数据处理模块根据所述数据交互模块接收到的触发请求， 生成所述唤醒请求， 其中， 所述触发请求由无线移动通信网络通过所述终端驻留的小区发送至所述终端。
在该技术方案中， 终端所处的状态包括激活状态和空闲状态， 当终端处于激活状 态时， 需要基站提供数据和 /或语音服务， 则可以主动生成唤醒消息 （用户主动发起， 或由终端内的应用程序基于需求而发起） 对休眠的基站进行唤醒； 当终端处于空闲状 态时， 若接收到其驻留的小区发送的触发请求 （比如基于负载均衡的网络切换需 求） ， 则可以生成相应的唤醒请求， 以唤醒休眠的基站。
在上述技术方案中， 优选地， 所述数据处理模块还用于测量接收到的所述导频信 息； 其中， 所述数据交互模块在测量结果表明所述导频信息的特征参数的数值优于预 设参数阈值的情况下， 向对应的基站发送所述唤醒请求； 或所述数据处理模块根据测 量结果表明的所有的所述导频信息对应的特征参数的数值， 从中选择指定数量的最优 的导频信息， 并由所述数据交互模块向对应的基站发送所述唤醒请求； 或所述数据处 理模块在对应的特征参数的数值优于预设参数阈值的所有导频信息中， 选择指定数量 的最优的导频信息， 并由所述数据交互模块向对应的基站发送所述唤醒请求。
在该技术方案中， 终端可以根据基站发送的导频信息对基站的特征参数进行测 量， 比如协议规范中的 RSRP ( Reference Signal Receiving Power, 参考信号接收功 率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） 。 终端可 以向特征参数的数值优于预设参数阈值的导频信息对应的基站发送唤醒请求， 以保证 在唤醒基站进行通信时具有良好的通信质量； 也可以根据特征参数的数值向指定数量 的导频信息对应的基站发送唤醒请求； 还可以从特征参数的数值优于预设参数阈值的 导频信息中选择指定数量的导频信息， 并向对应的基站发送唤醒请求。 若终端同时向 多个基站发送唤醒请求， 则多个基站在接收到唤醒请求时， 可以通过协商决定最终唤 醒的基站， 以确保唤醒基站数量的最少， 避免多个基站之间的干扰。 唤醒请求可以是 RACH ( Random Access Channel , 随机接入信道） 、 SRS ( Sounding Reference Signal, 侦听参考信号） 或类似的请求信息。
在上述技术方案中， 优选地， 所述数据交互模块还用于从所述终端驻留的小区获 取的所述基站可用的时频资源和可用的前导序列集合； 所述数据处理模块还用于生成 包含指定的前导序列的所述唤醒请求， 以由所述数据交互模块在所述可用的时频资源 进行发送。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 因此通过使终端在指定基站可用的时频资源上发送包含有该指定基站 可用的前导序列集合的唤醒请求， 可以使终端精确定位到需要唤醒的基站， 避免同时 唤醒多个基站而造成相互之间的干扰。 当然， 本领域技术人员应该理解的是： 在通信 领域中， "前导序列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说 法， 其实质上是相同、 等价的。
在上述技术方案中， 优选地， 所述数据处理模块还用于从所述数据交互模块接收 到的来自所述基站的所述导频信息中， 解析出所述基站可用的前导序列集合。
在该技术方案中， 基站在休眠状态时发送的导频信息中包含了自身可用的前导序 列集合， 以在指定的时频资源上对自身进行唯一的标识， 使得终端在唤醒基站时， 根 据解析出的前导序列集合而只对相同时频资源中的指定基站进行唤醒， 避免同时唤醒 过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
在上述技术方案中， 优选地， 所述数据处理模块还用于从所述数据交互模块接收 到的来自所述基站的所述导频信息中获取所述基站的标识， 并从预设的表格查询到对 应于所述标识的、 所述基站可用的前导序列集合； 其中， 所述预设的表格中至少关联 存储有所述基站的标识和所述基站可用的前导序列集合。
在该技术方案中， 基站的标识可以为 PCI ( Physical Cell ID, 物理小区 ID ) , 预 设的表格中可以将每个基站的 PCI与该基站可用的前导序列集合相关联地存储， 以便 终端根据接收到的导频信息中包含的某个基站的标识， 直接查询对应的可用的前导序 列集合， 无需向其他基站询问。 其中， 上述预设的表格可以仅对应于某个或某一部分 基站， 从而有助于提升终端的查询效率； 预设的表格也可以对应于所有的基站， 从而 有助于提高终端成功查询到可用的前导序列集合的概率。
根据本发明的实施方式， 还提供了一种存储在非易失性机器可读介质上的程序产 品， 用于小区干扰协调过程， 所述程序产品包括用于使计算机系统执行以下步骤的机 器可执行指令： 基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的 其他信息。
根据本发明的实施方式， 还提供了一种非易失机器可读介质， 存储有用于小区干 扰协调过程的程序产品， 所述程序产品包括用于使计算机系统执行以下步骤的机器可 执行指令： 基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的其他 信息。
根据本发明的实施方式， 还提供了一种机器可读程序， 所述程序使机器执行如上 所述技术方案中任一所述的小区干扰协调方法。
根据本发明的实施方式， 还提供了一种存储有机器可读程序的存储介质， 其中， 所述机器可读程序使得机器执行如上所述技术方案中任一所述的小区干扰协调方法。
通过以上技术方案， 可以使基站在进入休眠状态时发送导频信息， 在避免对其他 基站造成干扰同时， 使得终端能够根据接收到的导频信息， 在需要时唤醒休眠的基 站。 附图说明
图 1示出了根据本发明的一个实施例的小区干扰协调方法的流程图；
图 2A示出了常规循环前缀系统中的资源块的结构示意图；
图 2B示出了扩展循环前缀系统中的资源块的结构示意图；
图 3示出了根据本发明的一个实施例的基站的框图；
图 4示出了根据本发明的另一个实施例的小区干扰协调方法的流程图；
图 5示出了根据本发明的另一个实施例的终端的框图；
图 6示出了根据本发明的实施例的小区干扰协调方法的具体流程图。 具体实施方式
为了能够更清楚地理解本发明的上述目的、 特征和优点， 下面结合附图和具体实 施方式对本发明进行进一步的详细描述。 需要说明的是， 在不冲突的情况下， 本申请 的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明， 但是， 本发明还可 以釆用其他不同于在此描述的其他方式来实施， 因此， 本发明的保护范围并不受下面 公开的具体实施例的限制。
图 1示出了根据本发明的一个实施例的小区干扰协调方法的流程图。
如图 1 所示， 根据本发明的一个实施例的小区干扰协调方法， 包括： 步骤 102, 基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的其他信息。
在该技术方案中， 通过使基站从工作状态切换至休眠状态后， 停止发送除导频信 息之外的其他信息， 可以避免暂时不需提供数据和 /或语音服务的基站发送的上述其他 信息对其他基站造成的干扰， 同时使得终端可以通过基站发送的导频信息搜索处于到 休眠状态的基站， 确保了终端在需要进行数据传输和 /或语音服务时能够及时唤醒休眠 的基站。
具体来说， 导频信息可以是小区专用导频 （ CRS , Cell-specific Reference Signal ) , 也可以是 CRS 中对其他基站不会造成干扰或干扰较小的部分信息， 还可以 是协议中支持的其他导频信息， 比如信道状态信息参考信号 （CSI-RS , channel state information reference signal ) , 或者其中的部分信息， 但需保证对其他基站造成的干 扰不超过一定的干扰阈值。
在上述技术方案中， 优选地， 还包括： 所述基站在确定自身满足预设的状态切换 条件时， 从工作状态切换至休眠状态； 其中， 所述状态切换条件包括： 小区内不存在 激活状态和空闲状态的终端； 或小区内不存在激活状态的终端； 或小区内仅存在空闲 状态的终端， 且存在用于所述空闲状态的终端进行驻留的其他小区； 或小区内存在激 活状态的终端和空闲状态的终端， 且存在用于所述激活状态的终端和所述空闲状态的 终端进行驻留的其他小区。
在该技术方案中， 通过对基站对应的小区内的终端的状况进行统计， 以确保基站 的休眠对于终端的影响尽可能小， 保证用户得到良好的使用体验。
第一种情况下， 当基站对应的小区内不存在任何终端时， 则基站可以直接进入休 眠状态； 第二种情况下， 由于处于激活状态的终端需要基站提供数据和 /或语音服务， 而处于空闲状态的终端仅需要驻留在小区内以接收相应的基站信息， 因此， 只需要确 保小区内不存在激活状态的终端， 即可尽量降低对终端的正常通信的干扰； 第三种情 况下， 在小区内不存在激活状态的终端的情况下， 对于存在的空闲状态的终端， 若存 在可用于驻留的其他小区， 则可以尽量降低对该终端的干扰； 第四种情况下， 无论小 区内当前存在激活状态的终端或是空闲状态的终端， 只要存在可用于驻留的其他小 区， 都在一定程度上能够降低对该终端的正常通信的干扰。
具体地， 基站可以通过多种方式来确定是否存在用于某终端进行驻留的其他小 区： 比如基站可以通过终端上报的测量报告， 确定该终端周围存在着信号较好的小区 (比如信号功率大于或等于预设功率阈值， 或信号质量大于或等于预设质量阈值） ， 则确定该终端可以驻留在该小区； 或者， 基站可以获取终端的位置， 从而当终端周围 存在地理上靠近的小区时， 则认为该终端可以驻留在该小区； 或者釆用其他方式。
在上述技术方案中， 优选地， 还包括： 所述基站仅在部分天线端口发送所述导频 信息。
在该技术方案中， 在休眠状态下， 基站可以正常发送导频信息； 但由于导频信息 造成的干扰较大， 因而通过在基站休眠时仅在部分天线端口发送导频信息， 可以在确 保终端能够搜索到休眠基站的情况下， 降低基站对其他未休眠小区造成的干扰。 具体 地， 比如说能够用于发送 CRS 导频信息的天线端口包括 0、 1、 2、 3 , 那么可以选择 其中的任意一个、 两个或三个， 以用于发送 CRS 导频信息， 则相对于使用所有天线 端口发送导频信息时， 上述方案显然能够有效降低对其他基站的干扰。
在上述技术方案中， 优选地， 当所述导频信息为小区专用导频时， 所述部分天线 端口的序号为 2和 /或 3。
在该技术方案中， 基站在选择部分天线端口发送导频信息时， 可以优先选择发送 的导频信息对其他未休眠小区不造成干扰或造成干扰最小的天线端口， 以减少对其他 未休眠小区造成的干扰。 当导频信息为小区专用导频时， 选择序号为 2和 /或 3的天线 端口可以有效降低导频信息对其他未休眠小区造成的干扰， 从而提高其他未休眠小区 的通信质量。
具体地， 图 2A 和图 2B 分别示出了根据本发明的实施例的扩展循环前缀系统和 扩展循环前缀系统中的资源块的结构示意图， 并在图中具体标示出了用于发送 CRS 的天线端口 （图中所示的端口 0、 端口 1、 端口 2、 端口 3 ) 的位置信息。 其中， 由于 天线端口 2和 /或 3发送 CRS 时， 对其他基站产生的干扰相对更小， 因而选用端口 2 和 /或 3的天线端口发送的 CRS可以有效地降低 CRS对其他未休眠小区造成的干扰。
在上述技术方案中， 优选地， 还包括： 所述基站接收唤醒请求， 并从休眠状态切 换至工作状态。
在该技术方案中， 基站接收到的唤醒请求可以是终端自身发起的， 如终端需要进 行数据访问、 语音呼叫等服务， 也可以是网络通过驻留小区通知终端， 由终端判断后 向休眠基站发送的唤醒请求。 通过在基站接收到唤醒请求时， 从休眠状态切换至工作 状态， 使得终端在需要基站提供数据和 /或语音服务时， 及时唤醒处于休眠状态的基 站， 确保终端通信的实时性， 提高了基站工作的性能。
在上述技术方案中， 优选地， 还包括： 所述基站一旦接收到所述唤醒请求， 就从 休眠状态切换至工作状态； 或所述基站在预设时间段内接收到来自多个终端的唤醒请 求时， 从休眠状态切换至工作状态； 和 /或所述基站在确定自身不会对其他基站造成干 扰的情况下， 从休眠状态切换至工作状态。
在该技术方案中， 基站可以在接收到唤醒请求， 即从休眠状态切换至工作状态， 以确保终端正常进行通信。 优选地， 由于终端在发送唤醒请求时， 可能同时对多个基 站进行发送， 为了避免被唤醒的基站过多而造成相互之间的干扰， 因此可以使基站在 预设时间段内接收到来自多个终端的唤醒请求时， 才从休眠状态切换至工作状态， 确 保基站被唤醒之后有足够多的业务请求， 同时由于减少了唤醒的基站数量， 避免了多 个基站之间的干扰， 也降低了基站的能耗。 更进一步地， 还可以使基站在收到唤醒请 求并确定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状态， 从而提高基 站的工作性能。
在上述技术方案中， 优选地， 所述基站判断自身是否会对其他基站造成干扰的过 程包括： 所述基站获取指定基站的实时状态信息， 和 /或获取来自所述指定基站的信号 的特征参数； 其中， 若所述指定基站处于休眠状态， 和 /或所述特征参数的数值小于或 等于预设的参数阈值， 则判定所述基站不会对所述指定基站造成干扰。
在该技术方案中， 通过对基站自身是否会对其他基站造成干扰的判断， 可以使基 站在需要被唤醒且判定自身不会对其他基站造成干扰时， 从休眠状态切换至工作状 态， 最大程度上降低了基站之间的干扰。 获取的指定基站的实时状态信息包括该指定 基站处于休眠 /工作状态， 获取的来自指定基站的特征参数， 可以是反映基站信号强度 和信噪比， 或者是其他反映基站信号的特征参数。
此外， 基站还可以釆用其他的方式判断是否能够执行状态切换， 比如， 当基站一 定范围之内的基站都处于休眠状态， 则基站判定不会造成影响， 可以恢复至工作状 态； 当基站一定范围之内存在工作状态的基站， 或工作状态的基站的数量较多 （大于 或等于预设的数量阈值） ， 则判定基站的状态切换将对其他基站造成影响， 不能恢复 至工作状态。
在上述技术方案中， 优选地， 在所述基站接收到所述唤醒请求之后， 还包括： 所 述基站生成并广播唤醒通知消息， 所述唤醒通知消息中至少包含所述基站的标识和所 述唤醒请求的发送方的标识， 且所述唤醒通知消息用于表明所述基站将要根据所述发 送方的请求， 从休眠状态切换至工作状态； 和 /或所述基站接收到来自其他基站的唤醒 通知消息； 其中， 若所述基站发送所述唤醒通知消息且没有接收到相应的响应消息， 则从休眠状态切换至工作状态； 若所述基站接收到所述响应消息， 则与所述响应消息 的发送方进行协商， 以确定最终从休眠状态切换至工作状态的基站； 若所述基站接收 到来自其他基站的唤醒通知消息， 则返回相应的响应消息或不响应。
在该技术方案中， 通过在基站接收到唤醒请求后， 生成并广播唤醒通知消息， 可 以对是否有接收到相同的唤醒请求并等待切换工作状态的其他基站进行确认， 在确定 没有其他基站等待切换工作状态时， 从休眠状态切换至工作状态， 而在确定有其他基 站也接收到相同的唤醒请求并切换工作状态时， 通过基站之间的协商， 确定最终从休 眠状态切换至工作状态的基站， 减少了唤醒基站的数量， 降低了基站之间的干扰， 实 现了唤醒基站的最优化方案。 具体来说， 在基站之间进行协商时， 可以选择能够为发 送唤醒请求的终端提供最优信号质量的基站， 和 /或接收到唤醒请求最多的基站等。 基 站之间的协商可以是通过回传链路的协调， 也可以是通过空中接口信息的协调。
在上述技术方案中， 优选地， 所述唤醒请求中包含所有目标基站的信息， 则当所 述唤醒请求还被发送至其他基站时， 所述小区干扰协调方法还包括： 所述基站直接与 所述其他基站进行协商， 以确定最终从休眠状态切换至工作状态的基站。
在该技术方案中， 由于基站在接收到终端发送的唤醒请求时， 并不了解是否存在 其他接收到相同唤醒请求的基站， 也不了解其他接收到唤醒请求的为哪些基站。 因 此， 通过在唤醒请求中标明其他接收到唤醒请求的基站， 使得这些基站之间可以直接 进行协商， 使协商过程更具有目的性， 有助于缩短协商过程所造成的时延。
当然， 唤醒请求中还可以包含上述基站的其他信息， 比如终端可以根据基站发送 的导频信息对基站的性能指标进行测量 （比如协议规范中的 RSRP ( Reference Signal Receiving Power , 参考信号接收功率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） ） ， 并将测量的多个基站的性能指标随唤醒请求同时发 送至多个基站， 使得多个基站根据接收到唤醒请求的所有基站的性能指标确定最终需 要从休眠状态切换至工作状态的基站， 从而确保被唤醒的基站具有良好的工作性能。
在上述技术方案中， 优选地， 还包括： 所述基站在指定的时频资源上接收所述唤 醒请求， 且所述唤醒请求包含指定的前导序列。
在该技术方案中， 通过使基站在指定的时频资源上接收唤醒请求， 且在唤醒请求 中包含指定的前导序列， 使得终端能够精确地定位到需要唤醒的基站， 避免同时唤醒 多个基站而造成相互干扰。 在同一个时频资源上可能存在多个基站， 而在不同时频资 源上的基站的前导序列可能相同， 因此为了精确定位终端需要唤醒的基站， 可以使得 基站在指定的时频资源上接收唤醒请求， 并通过唤醒请求中的前导序列对需要唤醒的 基站进行精确定位。 当然， 本领域技术人员应该理解的是： 在通信领域中， "前导序 列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说法， 其实质上是相 同、 等价的。
在上述技术方案中， 优选地， 还包括： 所述基站在从工作状态切换至休眠状态之 前， 发送自身可用的时频资源和可用的前导序列集合。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 通过使基站在从工作状态切换至休眠状态之前， 发送自身可用的时频 资源和可用的前导序列集合， 可以使得其他基站和终端根据接收到的时频资源和前导 序列集合确定进入休眠状态的基站， 在终端需要唤醒指定基站时， 只需在该指定基站 所在的时频资源上发送包含有该指定基站可用的前导序列的唤醒请求， 即可准确地对 该指定基站进行唤醒。 而其他基站也可以根据接收到的时频资源和前导序列集合确定 进入休眠状态的基站， 从而可以判定自身对该进入休眠状态的基站不再产生干扰。
在上述技术方案中， 优选地， 还包括： 所述基站在休眠状态时发送的所述导频信 息中包含自身可用的前导序列集合。
在该技术方案中， 终端在发送唤醒请求时， 是在指定的时频资源上进行发送， 通 过使基站在休眠状态时发送自身可用的前导序列集合， 使得在相同时频资源上的多个 基站之间， 可以通过可用的前导序列 （集合） 进行区分， 使得终端在唤醒基站时， 通 过对时频资源和前导序列的选择， 只对其中指定的基站进行精确地唤醒， 避免同时唤 醒过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
图 3示出了根据本发明的一个实施例的基站的框图。
如图 3 所示， 根据本发明的一个实施例的基站 300, 包括： 数据处理模块 302, 用于控制所述基站 300从工作状态切换至休眠状态； 数据交互模块 304 , 用于在所述 基站 300处于休眠状态时， 停止发送除导频信息之外的其他信息。
在该技术方案中， 通过使基站 300从工作状态切换至休眠状态后， 停止发送除导 频信息之外的其他信息， 可以避免暂时不需提供数据和 /或语音服务的基站 300发送的 上述其他信息对其他基站 300造成的干扰， 同时使得终端可以通过基站 300发送的导 频信息搜索处于到休眠状态的基站 300 , 确保了终端在需要进行数据传输和 /或语音服 务时能够及时唤醒休眠的基站 300。
具体来说， 导频信息可以是小区专用导频 （ CRS , Cell-specific Reference Signal ) , 也可以是 CRS 中对其他基站不会造成干扰或干扰较小的部分信息， 还可以 是协议中支持的其他导频信息， 比如信道状态信息参考信号 （CSI-RS , channel state information reference signal ) , 或者其中的部分信息， 但需保证对其他基站造成的干 扰不超过一定的干扰阈值。 在上述技术方案中， 优选地， 所述数据处理模块 302还用于： 判断所述基站 300 是否满足预设的状态切换条件， 且在判断结果为满足的情况下， 控制所述基站 300从 工作状态切换至休眠状态； 其中， 所述状态切换条件包括： 小区内不存在激活状态和 空闲状态的终端； 或小区内不存在激活状态的终端； 或小区内仅存在空闲状态的终 端， 且存在用于所述空闲状态的终端进行驻留的其他小区； 或小区内存在激活状态的 终端和空闲状态的终端， 且存在用于所述激活状态的终端和所述空闲状态的终端进行 驻留的其他小区。
在该技术方案中， 通过对基站 300对应的小区内的终端的状况进行统计， 以确保 基站 300的休眠对于终端的影响尽可能小， 保证用户得到良好的使用体验。
第一种情况下， 当基站 300对应的小区内不存在任何终端时， 则基站 300可以直 接进入休眠状态； 第二种情况下， 由于处于激活状态的终端需要基站 300提供数据和 / 或语音服务， 而处于空闲状态的终端仅需要驻留在小区内以接收相应的基站信息， 因 此， 只需要确保小区内不存在激活状态的终端， 即可尽量降低对终端的正常通信的干 扰； 第三种情况下， 在小区内不存在激活状态的终端的情况下， 对于存在的空闲状态 的终端， 若存在可用于驻留的其他小区， 则可以尽量降低对该终端的干扰； 第四种情 况下， 无论小区内当前存在激活状态的终端或是空闲状态的终端， 只要存在可用于驻 留的其他小区， 都在一定程度上能够降低对该终端的正常通信的干扰。
具体地， 基站 300可以通过多种方式来确定是否存在用于某终端进行驻留的其他 小区： 比如基站 300可以通过终端上报的测量报告， 确定该终端周围存在着信号较好 的小区 （比如信号功率大于或等于预设功率阈值， 或信号质量大于或等于预设质量阈 值） ， 则确定该终端可以驻留在该小区； 或者， 基站 300可以获取终端的位置， 从而 当终端周围存在地理上靠近的小区时， 则认为该终端可以驻留在该小区； 或者釆用其 他方式。
在上述技术方案中， 优选地， 所述数据交互模块 304仅在部分天线端口发送所述 导频信息。
在该技术方案中， 在休眠状态下， 基站 300 可以正常发送导频信息； 但由于导频 信息造成的干扰较大， 因而通过在基站 300休眠时仅在部分天线端口发送导频信息， 可以在确保终端能够搜索到休眠基站 300的情况下， 降低基站 300对其他未休眠小区 造成的干扰。 具体地， 比如说能够用于发送 CRS导频信息的天线端口包括 0、 1、 2、 3 , 那么可以选择其中的任意一个、 两个或三个， 以用于发送 CRS 导频信息， 则相对 于使用所有天线端口发送导频信息时， 上述方案显然能够有效降低对其他基站的干 扰。
在上述技术方案中， 优选地， 当所述导频信息为小区专用导频时， 所述部分天线 端口的序号为 2和 /或 3。
在该技术方案中， 基站 300在选择部分天线端口发送导频信息时， 可以优先选择 发送的导频信息对其他未休眠小区不造成干扰或造成干扰最小的天线端口， 以减少对 其他未休眠小区造成的干扰。 当导频信息为小区专用导频时， 选择序号为 2和 /或 3的 天线端口可以有效降低导频信息对其他未休眠小区造成的干扰， 从而提高其他未休眠 小区的通信质量。
在上述技术方案中， 优选地， 所述数据交互模块 304还用于： 接收唤醒请求； 以 及所述数据处理模块 302还用于： 在所述数据交互模块 304接收到所述唤醒请求的情 况下， 控制所述基站 300从休眠状态切换至工作状态。
在该技术方案中， 基站 300接收到的唤醒请求可以是终端自身发起的， 如终端需 要进行数据访问、 语音呼叫等服务， 也可以是网络通过驻留小区通知终端， 由终端判 断后向休眠基站 300发送的唤醒请求。 通过在基站 300接收到唤醒请求时， 从休眠状 态切换至工作状态， 使得终端在需要基站 300提供数据和 /或语音服务时， 及时唤醒处 于休眠状态的基站 300 , 确保终端通信的实时性， 提高了基站 300工作的性能。 在上述技术方案中， 优选地， 所述数据处理模块 302在所述数据交互模块 304— 旦接收到所述唤醒请求的情况下， 就控制所述基站 300从休眠状态切换至工作状态； 或所述数据处理模块 302在所述数据交互模块 304在预设时间段内接收到来自多个终 端的唤醒请求的情况下， 控制所述基站 300从休眠状态切换至工作状态； 和 /或所述基 站 300还包括干扰确定模块， 用于确定自身是否会对其他基站 300造成干扰， 其中， 所述数据处理模块 302在所述干扰确定模块确定自身不会对其他基站 300造成干扰的 情况下， 从休眠状态切换至工作状态。
在该技术方案中， 基站 300 可以在接收到唤醒请求， 即从休眠状态切换至工作状 态， 以确保终端正常进行通信。 优选地， 由于终端在发送唤醒请求时， 可能同时对多 个基站 300进行发送， 为了避免被唤醒的基站 300过多而造成相互之间的干扰， 因此 可以使基站 300在预设时间段内接收到来自多个终端的唤醒请求时， 才从休眠状态切 换至工作状态， 确保基站 300被唤醒之后有足够多的业务请求， 同时由于减少了唤醒 的基站 300数量， 避免了多个基站 300之间的干扰， 也降低了基站 300的能耗。 更进 一步地， 还可以使基站 300在收到唤醒请求并确定自身不会对其他基站 300造成干扰 时， 从休眠状态切换至工作状态， 从而提高基站 300的工作性能。
在上述技术方案中， 优选地， 所述干扰确定模块根据所述数据交互模块 304获取 的指定基站 300的实时状态信息， 和 /或根据所述数据交互模块 304接收到的来自所述 指定基站 300 的信号的特征参数， 确定所述基站 300 是否会对其他基站 300 造成干 扰； 其中， 所述干扰确定模块在所述指定基站 300处于休眠状态， 和 /或所述特征参数 的数值小于或等于预设的参数阈值的情况下， 判定所述基站 300 不会对所述指定基站 300造成干扰。
在该技术方案中， 通过对基站 300 自身是否会对其他基站 300造成干扰的判断， 可以使基站 300在需要被唤醒且判定自身不会对其他基站 300造成干扰时， 从休眠状 态切换至工作状态， 最大程度上降低了基站 300之间的干扰。 获取的指定基站 300的 实时状态信息包括该指定基站 300处于休眠 /工作状态， 获取的来自指定基站 300的特 征参数， 可以是反映基站 300信号强度和信噪比， 或者是其他反映基站 300信号的特 征参数。
此外， 基站 300还可以釆用其他的方式判断是否能够执行状态切换， 比如， 当基 站 300—定范围之内的基站都处于休眠状态， 则基站 300判定不会造成影响， 可以恢 复至工作状态； 当基站 300—定范围之内存在工作状态的基站， 或工作状态的基站的 数量较多 （大于或等于预设的数量阈值） ， 则判定基站 300 的状态切换将对其他基站 造成影响， 不能恢复至工作状态。
在上述技术方案中， 优选地， 所述数据处理模块 302 还用于： 生成唤醒通知消 息， 所述唤醒通知消息中至少包含所述基站 300 的标识和所述唤醒请求的发送方的标 识， 且所述唤醒通知消息用于表明所述基站 300将要根据所述发送方的请求， 从休眠 状态切换至工作状态； 所述数据交互模块 304还用于： 广播所述唤醒通知消息， 和 /或 接收到来自其他基站 300的唤醒通知消息； 其中， 所述数据处理模块 302在所述数据 交互模块 304发送所述唤醒通知消息且没有接收到相应的响应消息的情况下， 控制所 述基站 300从休眠状态切换至工作状态； 所述数据处理模块 302在所述数据交互模块 304接收到所述响应消息的情况下， 通过所述数据交互模块 304 与所述响应消息的发 送方进行协商， 以确定最终从休眠状态切换至工作状态的基站 300; 所述数据交互模 块 304在接收到来自其他基站 300的唤醒通知消息的情况下， 还返回所述数据处理模 块 302相应生成的响应消息或不响应。
在该技术方案中， 通过在基站 300 接收到唤醒请求后， 生成并广播唤醒通知消 息， 可以对是否有接收到相同的唤醒请求并等待切换工作状态的其他基站 300进行确 认， 在确定没有其他基站 300 等待切换工作状态时， 从休眠状态切换至工作状态， 而 在确定有其他基站 300也接收到相同的唤醒请求并切换工作状态时， 通过基站 300之 间的协商， 确定最终从休眠状态切换至工作状态的基站 300 , 减少了唤醒基站 300 的 数量， 降低了基站 300之间的干扰， 实现了唤醒基站 300的最优化方案。 具体来说， 在基站 300之间进行协商时， 可以选择能够为发送唤醒请求的终端提供最优信号质量 的基站 300 , 和 /或接收到唤醒请求最多的基站 300等。 基站 300之间的协商可以是通 过回传链路的协调， 也可以是通过空中接口信息的协调。
在上述技术方案中， 优选地， 所述数据处理模块 302还用于： 解析出所述唤醒请 求中包含的所有目标基站 300的信息， 并在所述唤醒请求还被发送至其他基站 300的 情况下， 通过所述数据交互模块 304直接与所述其他基站 300进行协商， 以确定最终 从休眠状态切换至工作状态的基站 300。
在该技术方案中， 由于基站 300在接收到终端发送的唤醒请求时， 并不了解是否 存在其他接收到相同唤醒请求的基站， 也不了解其他接收到唤醒请求的为哪些基站。 因此， 通过在唤醒请求中标明其他接收到唤醒请求的基站， 使得这些基站之间可以直 接进行协商， 使协商过程更具有目的性， 有助于缩短协商过程所造成的时延。
当然， 唤醒请求中还可以包含上述基站的其他信息， 比如终端可以根据基站发送 的导频信息对基站的性能指标进行测量 （比如协议规范中的 RSRP ( Reference Signal Receiving Power , 参考信号接收功率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） ） ， 并将测量的多个基站的性能指标随唤醒请求同时发 送至多个基站， 使得多个基站根据接收到唤醒请求的所有基站的性能指标确定最终需 要从休眠状态切换至工作状态的基站， 从而确保被唤醒的基站具有良好的工作性能。
在上述技术方案中， 优选地， 所述数据交互模块 304在指定的时频资源上接收所 述唤醒请求， 且所述唤醒请求包含指定的前导序列。
在该技术方案中， 通过使基站 300在指定的时频资源上接收唤醒请求， 且在唤醒 请求中包含指定的前导序列， 使得终端能够精确地定位到需要唤醒的基站 300 , 避免 同时唤醒多个基站 300 而造成相互干扰。 在同一个时频资源上可能存在多个基站 300 , 而在不同时频资源上的基站 300 的前导序列可能相同， 因此为了精确定位终端 需要唤醒的基站 300 , 可以使得基站 300在指定的时频资源上接收唤醒请求， 并通过 唤醒请求中的前导序列对需要唤醒的基站 300进行精确定位。 当然， 本领域技术人员 应该理解的是： 在通信领域中， "前导序列" 、 "导频信息" 、 "参考符号" 等只是 对相同概念的不同说法， 其实质上是相同、 等价的。
在上述技术方案中， 优选地， 所述数据交互模块 304在所述数据处理模块 302控 制所述基站 300从工作状态切换至休眠状态之前， 发送自身可用的时频资源和可用的 前导序列集合。
在该技术方案中， 基站 300 自身可用的时频资源和可用的前导序列集合可以对基 站 300进行唯一的标识， 通过使基站 300在从工作状态切换至休眠状态之前， 发送自 身可用的时频资源和可用的前导序列集合， 可以使得其他基站 300和终端根据接收到 的时频资源和前导序列集合确定进入休眠状态的基站 300 , 在终端需要唤醒指定基站 300时， 只需在该指定基站 300所在的时频资源上发送包含有该指定基站 300可用的 前导序列的唤醒请求， 即可准确地对该指定基站 300进行唤醒。 而其他基站 300也可 以根据接收到的时频资源和前导序列集合确定进入休眠状态的基站 300 , 从而可以判 定自身对该进入休眠状态的基站 300不再产生干扰。
在上述技术方案中， 优选地， 所述数据交互模块 304在所述基站 300处于休眠状 态时， 发送包含所述基站 300可用的前导序列集合的所述导频信息。
在该技术方案中， 终端在发送唤醒请求时， 是在指定的时频资源上进行发送， 通 过使基站 300在休眠状态时发送自身可用的前导序列集合， 使得在相同时频资源上的 多个基站之间， 可以通过可用的前导序列 （集合） 进行区分， 使得终端在唤醒基站 时， 通过对时频资源和前导序列的选择， 只对其中指定的基站进行精确地唤醒， 避免 同时唤醒过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。 图 4示出了根据本发明的另一个实施例的小区干扰协调方法的流程图。
如图 4 所示， 根据本发明的另一个实施例的小区干扰协调方法， 包括： 步骤 402 , 终端接收处于休眠状态的基站发送的导频信息； 步骤 404 , 所述终端根据所述导 频信息生成唤醒请求， 并向所述基站发送所述唤醒请求， 所述唤醒请求用于请求所述 基站从休眠状态切换至工作状态。
在该技术方案中， 通过使处于休眠状态的基站仍然发送导频信息， 可以使终端根 据接收到的基站发送的导频信息生成唤醒请求， 从而使得终端在需要基站提供数据和 / 或语音服务时， 对处于休眠状态的指定基站进行唤醒， 避免了终端同时唤醒多个基 站， 而造成多个基站之间的干扰。
在上述技术方案中， 优选地， 还包括： 所述终端主动生成所述唤醒请求； 或所述 终端根据接收到的触发请求， 生成所述唤醒请求， 其中， 所述触发请求由无线移动通 信网络通过所述终端驻留的小区发送至所述终端。
在该技术方案中， 终端所处的状态包括激活状态和空闲状态， 当终端处于激活状 态时， 需要基站提供数据和 /或语音服务， 则可以主动生成唤醒消息 （用户主动发起， 或由终端内的应用程序基于需求而发起） 对休眠的基站进行唤醒； 当终端处于空闲状 态时， 若接收到其驻留小区发送的触发请求 （比如基于负载均衡的网络切换需求） ， 则可以生成相应的唤醒请求， 以唤醒休眠的基站。
在上述技术方案中， 优选地， 还包括： 所述终端测量接收到的所述导频信息； 其 中， 当测量结果表明所述导频信息的特征参数的数值优于预设参数阈值时， 所述终端 向对应的基站发送所述唤醒请求； 或根据测量结果表明的所有的所述导频信息对应的 特征参数的数值， 所述终端从中选择指定数量的最优的导频信息， 并向对应的基站发 送所述唤醒请求； 或在对应的特征参数的数值优于预设参数阈值的所有导频信息中， 所述终端选择指定数量的最优的导频信息， 并向对应的基站发送所述唤醒请求。
在该技术方案中， 终端可以根据基站发送的导频信息对基站的特征参数进行测 量， 比如协议规范中的 RSRP ( Reference Signal Receiving Power, 参考信号接收功 率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） 。 终端可 以向特征参数的数值优于预设参数阈值的导频信息对应的基站发送唤醒请求， 以保证 在唤醒基站进行通信时具有良好的通信质量； 也可以根据特征参数的数值向指定数量 的导频信息对应的基站发送唤醒请求； 还可以从特征参数的数值优于预设参数阈值的 导频信息中选择指定数量的导频信息， 并向对应的基站发送唤醒请求。 若终端同时向 多个基站发送唤醒请求， 则多个基站在接收到唤醒请求时， 可以通过协商决定最终唤 醒的基站， 以确保唤醒基站数量的最少， 避免多个基站之间的干扰。 唤醒请求可以是 RACH ( Random Access Channel , 随机接入信道） 、 SRS ( Sounding Reference Signal, 侦听参考信号） 或类似的请求信息。
在上述技术方案中， 优选地， 还包括： 所述终端根据从驻留的小区获取的所述基 站可用的时频资源和可用的前导序列集合， 生成包含指定的前导序列的所述唤醒请 求， 并在所述可用的时频资源发送所述唤醒请求。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 因此通过使终端在指定基站可用的时频资源上发送包含有该指定基站 可用的前导序列集合的唤醒请求， 可以使终端精确定位到需要唤醒的基站， 避免同时 唤醒多个基站而造成相互之间的干扰。 当然， 本领域技术人员应该理解的是： 在通信 领域中， "前导序列" 、 "导频信息" 、 "参考符号" 等只是对相同概念的不同说 法， 其实质上是相同、 等价的。
在上述技术方案中， 优选地， 还包括： 所述终端从接收到的所述基站发送的所述 导频信息中， 解析出所述基站可用的前导序列集合。
在该技术方案中， 基站在休眠状态时发送的导频信息中包含了自身可用的前导序 列集合， 以在指定的时频资源上对自身进行唯一的标识， 使得终端在唤醒基站时， 根 据解析出的前导序列集合而只对相同时频资源中的指定基站进行唤醒， 避免同时唤醒 过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
在上述技术方案中， 优选地， 还包括： 所述终端接收所述基站发送的所述导频信 息， 从所述导频信息中获取所述基站的标识， 并从预设的表格查询到对应于所述标识 的、 所述基站可用的前导序列集合； 其中， 所述预设的表格中至少关联存储有所述基 站的标识和所述基站可用的前导序列集合。
在该技术方案中， 基站的标识可以为 PCI ( Physical Cell ID, 物理小区 ID ) , 预 设的表格中可以将每个基站的 PCI与该基站可用的前导序列集合相关联地存储， 以便 终端根据接收到的导频信息中包含的某个基站的标识， 直接查询对应的可用的前导序 列集合， 无需向其他基站询问。 其中， 上述预设的表格可以仅对应于某个或某一部分 基站， 从而有助于提升终端的查询效率； 预设的表格也可以对应于所有的基站， 从而 有助于提高终端成功查询到可用的前导序列集合的概率。
图 5示出了根据本发明的另一个实施例的终端的框图。
如图 5 所示， 根据本发明的另一个实施例的终端 500 , 包括： 数据交互模块 502 , 用于接收处于休眠状态的基站发送的导频信息， 并发送数据处理模块 504 生成 的唤醒请求； 所述数据处理模块 504 , 用于根据所述导频信息生成所述唤醒请求， 所 述唤醒请求用于请求所述基站从休眠状态切换至工作状态。
在该技术方案中， 通过使处于休眠状态的基站仍然发送导频信息， 可以使终端 500根据接收到的基站发送的导频信息生成唤醒请求， 从而使得终端 500在需要基站 提供数据和 /或语音服务时， 对处于休眠状态的指定基站进行唤醒， 避免了终端 500同 时唤醒多个基站， 而造成多个基站之间的干扰。
在上述技术方案中， 优选地， 所述数据处理模块 504 主动生成所述唤醒请求； 或 所述数据处理模块 504根据所述数据交互模块 502接收到的触发请求， 生成所述唤醒 请求， 其中， 所述触发请求由无线移动通信网络通过所述终端 500驻留的小区发送至 所述终端 500。
在该技术方案中， 终端 500所处的状态包括激活状态和空闲状态， 当终端 500处 于激活状态时， 需要基站提供数据和 /或语音服务， 则可以主动生成唤醒消息 （用户主 动发起， 或由终端 500 内的应用程序基于需求而发起）对休眠的基站进行唤醒； 当终 端 500 处于空闲状态时， 若接收到其驻留的小区发送的触发请求 （比如基于负载均衡 的网络切换需求） ， 则可以生成相应的唤醒请求， 以唤醒休眠的基站。
在上述技术方案中， 优选地， 所述数据处理模块 504还用于测量接收到的所述导 频信息； 其中， 所述数据交互模块 502在测量结果表明所述导频信息的特征参数的数 值优于预设参数阈值的情况下， 向对应的基站发送所述唤醒请求； 或所述数据处理模 块 504根据测量结果表明的所有的所述导频信息对应的特征参数的数值， 从中选择指 定数量的最优的导频信息， 并由所述数据交互模块 502 向对应的基站发送所述唤醒请 求； 或所述数据处理模块 504在对应的特征参数的数值优于预设参数阈值的所有导频 信息中， 选择指定数量的最优的导频信息， 并由所述数据交互模块 502 向对应的基站 发送所述唤醒请求。
在该技术方案中， 终端 500 可以根据基站发送的导频信息对基站的特征参数进行 测量， 比如协议规范中的 RSRP ( Reference Signal Receiving Power, 参考信号接收功 率） 和 /或 RSRQ ( Reference Signal Receiving Quality, 参考信号接收质量） 。 终端
500 可以向特征参数的数值优于预设参数阈值的导频信息对应的基站发送唤醒请求， 以保证在唤醒基站进行通信时具有良好的通信质量； 也可以根据特征参数的数值向指 定数量的导频信息对应的基站发送唤醒请求； 还可以从特征参数的数值优于预设参数 阈值的导频信息中选择指定数量的导频信息， 并向对应的基站发送唤醒请求。 若终端 500 同时向多个基站发送唤醒请求， 则多个基站在接收到唤醒请求时， 可以通过协商 决定最终唤醒的基站， 以确保唤醒基站数量的最少， 避免多个基站之间的干扰。 唤醒 请求可以是 RACH ( Random Access Channel , 随机接入信道） 、 SRS ( Sounding Reference Signal , 侦听参考信号） 或类似的请求信息。
在上述技术方案中， 优选地， 所述数据交互模块 502还用于从所述终端 500驻留 的小区获取的所述基站可用的时频资源和可用的前导序列集合； 所述数据处理模块 504还用于生成包含指定的前导序列的所述唤醒请求， 以由所述数据交互模块 502在 所述可用的时频资源进行发送。
在该技术方案中， 基站自身可用的时频资源和可用的前导序列集合可以对基站进 行唯一的标识， 因此通过使终端 500在指定基站可用的时频资源上发送包含有该指定 基站可用的前导序列集合的唤醒请求， 可以使终端 500精确定位到需要唤醒的基站， 避免同时唤醒多个基站而造成相互之间的干扰。 当然， 本领域技术人员应该理解的 是： 在通信领域中， "前导序列" 、 "导频信息" 、 "参考符号" 等只是对相同概念 的不同说法， 其实质上是相同、 等价的。
在上述技术方案中， 优选地， 所述数据处理模块 504还用于从所述数据交互模块 502 接收到的来自所述基站的所述导频信息中， 解析出所述基站可用的前导序列集 合。
在该技术方案中， 基站在休眠状态时发送的导频信息中包含了自身可用的前导序 列集合， 以在指定的时频资源上对自身进行唯一的标识， 使得终端 500 在唤醒基站 时， 根据解析出的前导序列集合而只对相同时频资源中的指定基站进行唤醒， 避免同 时唤醒过多基站 （比如使用同一时频资源的所有基站） 而造成基站间的干扰。
在上述技术方案中， 优选地， 所述数据处理模块 504还用于从所述数据交互模块
502 接收到的来自所述基站的所述导频信息中获取所述基站的标识， 并从预设的表格 查询到对应于所述标识的、 所述基站可用的前导序列集合； 其中， 所述预设的表格中 至少关联存储有所述基站的标识和所述基站可用的前导序列集合。
在该技术方案中， 基站的标识可以为 PCI ( Physical Cell ID , 物理小区 ID ) , 预 设的表格中可以将每个基站的 PCI与该基站可用的前导序列集合相关联地存储， 以便 终端根据接收到的导频信息中包含的某个基站的标识， 直接查询对应的可用的前导序 列集合， 无需向其他基站询问。 其中， 上述预设的表格可以仅对应于某个或某一部分 基站， 从而有助于提升终端 500 的查询效率； 预设的表格也可以对应于所有的基站， 从而有助于提高终端 500成功查询到可用的前导序列集合的概率。
图 6示出了根据本发明的实施例的小区干扰协调方法的具体流程图。
如图 6所示， 根据本发明的实施例的小区干扰协调方法， 包括：
步骤 602 , 为了降低对其他基站造成的干扰， 基站从正常的工作状态切换为休眠 状态， 则基站停止对同步、 广播消息的发送。 但由于停止了消息的发送， 使得终端无 法搜索到该基站的存在， 无法在需要时对该基站进行唤醒操作， 因此， 基站在休眠状 态下， 仍需要发送小区导频信息， 使得终端可以通过基站发送的导频信息搜索到休眠 的基站， 确保了终端在需要进行数据传输和 /或语音服务时能够及时唤醒休眠的基站。
具体地， 基站发送的导频信息可以是小区专用导频 CRS , 也可以是 CRS 中对其 他基站不会造成干扰或干扰较小的部分信息， 还可以是协议中支持的其他导频信息 (比如 CSI-RS ) 或者其中的部分信息， 但需保证对其他基站造成的干扰不超过一定 的干扰阈值。
同时， 虽然基站是为了降低对其他基站的干扰而执行了状态切换， 但为了确保其 小区内的终端能够正常运行， 基站仍可以根据具体情况确定是否进入休眠状态。 其 中， 基站可以在自身的状态满足以下条件中任一种时， 切换至休眠状态：
1 ) 小区内不存在激活状态和空闲状态的终端。 在这种情况下， 当基站对应的小 区内不存在任何终端时， 则基站可以直接进入休眠状态。
2 ) 或小区内不存在激活状态的终端。 在这种情况下， 由于处于激活状态的终端 需要基站提供数据和 /或语音服务， 而处于空闲状态的终端仅需要驻留在小区内以接收 相应的基站信息， 因此， 只需要确保小区内不存在激活状态的终端， 即可尽量降低对 终端的正常通信的干扰。
3 ) 或小区内仅存在空闲状态的终端， 且存在用于空闲状态的终端进行驻留的其 他小区。 在这种情况下， 在小区内不存在激活状态的终端的情况下， 对于存在的空闲 状态的终端， 若存在可用于驻留的其他小区， 则可以尽量降低对该终端的干扰。
4 ) 或小区内存在激活状态的终端和空闲状态的终端， 且存在用于激活状态的终 端和空闲状态的终端进行驻留的其他小区。 在这种情况下， 无论小区内当前存在激活 状态的终端或是空闲状态的终端， 只要存在可用于驻留的其他小区， 都在一定程度上 能够降低对该终端的正常通信的干扰。
具体地， 基站可以通过多种方式来确定是否存在用于某终端进行驻留的其他小 区： 比如基站可以通过终端上报的测量报告， 确定该终端周围存在着信号较好的小区 (比如信号功率大于或等于预设功率阈值， 或信号质量大于或等于预设质量阈值） ， 则确定该终端可以驻留在该小区； 或者， 基站可以获取终端的位置， 从而当终端周围 存在地理上靠近的小区时， 则认为该终端可以驻留在该小区； 或者釆用其他方式。
此外， 基站在从工作状态切换至休眠状态之前， 还可以发送自身可用的时频资源 和可用的前导序列集合， 使得其他周围的基站能够接收到这些信息， 以供终端用于唤 醒上述基站。 或者， 基站还可以在进入休眠状态之后， 发送包含有自身可用的前导序 列集合的导频信息， 使得终端能够直接获取上述信息。 由于基站自身可用的时频资源 和可用的前导序列集合可以对基站进行唯一的标识， 通过使基站在从工作状态切换至 休眠状态之前， 发送自身可用的时频资源和可用的前导序列集合， 可以使得其他基站 和终端根据接收到的时频资源和前导序列集合确定进入休眠状态的基站， 在终端需要 唤醒指定基站时， 只需在该指定基站所在的时频资源上发送包含有该指定基站可用的 前导序列的唤醒请求， 即可准确地对该指定基站进行唤醒； 而其他基站也可以根据接 收到的时频资源和前导序列集合确定进入休眠状态的基站， 从而可以判定自身对该进 入休眠状态的基站不再产生干扰； 而通过使基站在休眠状态时发送自身可用的前导序 列集合使得在指定的时频资源上对多个基站有不同的标识， 使得唤醒基站时只对其中 指定基站进行唤醒， 避免同时唤醒在同一时频资源上的所有基站而造成基站间的干 扰。
步骤 604 , 终端根据接收到的导频信息对休眠小区的性能参数进行测量， 其中测 量的性能参数可以是协议规范中的 RSRP ( Reference Signal Receiving Power, 参考信 号接收功率） 和 /或 RSRQ ( Reference Signal Receiving Quality , 参考信号接收质 量） ， 也可以是能够反映小区信号强度和信噪比的其他参数。
步骤 606 , 判断终端是否有业务请求， 并需要唤醒基站， 若是， 则执行步骤 608 , 否则， 返回步骤 604; 处于激活状态的终端的业务请求是自身发起的， 比如数据 访问、 语音呼叫等， 而处于空闲状态的终端的业务请求是根据接收到其驻留小区发送 的触发请求 （比如基于负载均衡的网络切换需求） 生成的业务请求。
步骤 608 , 在判断终端有业务请求时， 终端向基站发送唤醒请求。
其中， 为了避免同时唤醒的基站过多而造成相互之间产生干扰， 同时为了降低基 站的能耗， 可以尽可能少的唤醒基站， 因此终端可以向特征参数的数值优于预设参数 阈值的导频信息对应的基站发送唤醒请求， 以保证在唤醒基站进行通信时具有良好的 通信质量。 比如， 终端可以根据步骤 604 中测量得到的基站的性能参数， 从而确定基 站的通信质量。
为了控制被唤醒基站的数量， 终端也可以对特征参数的数值进行排列， 从中选择 (比如按照从最优向最差的顺序进行选择） 指定数量的导频信息对应的基站， 并发送 唤醒请求； 还可以仅向特征参数的数值最优的基站发送唤醒请求。 其中， 唤醒请求可 以是 RACH ( Random Access Channel , 随机接入信道） 、 SRS ( Sounding Reference Signal, 侦听参考信号） 或类似的请求信息。 终端发送的唤醒请求信息中包含了指定基站的前导序列， 使得终端能够精确地定 位到需要唤醒的基站， 避免同时唤醒多个基站而造成相互干扰。 由于在同一个时频资 源上可能存在多个基站， 而在不同时频资源上的基站的前导序列可能相同， 因此为了 精确定位终端需要唤醒的基站， 可以使得基站在指定的时频资源上接收唤醒请求， 并 通过唤醒请求中的前导序列对需要唤醒的基站进行精确定位。
步骤 610 , 基站在接收到终端发送的唤醒请求之后， 判断是否切换至工作状态， 若判定切换工作状态， 则执行步骤 612 , 否则返回步骤 602。
具体地， 为了避免被唤醒的基站过多而造成相互之间的干扰， 因此基站在接收到 唤醒请求时， 需要进行一些判断步骤之后， 才能够确定是否执行状态切换。 比如， 基 站可以在接收到唤醒请求之后， 马上就执行状态切换， 也可以在确定于预设时间段内 接收到来自多个终端的唤醒请求时， 才从休眠状态切换至工作状态等， 从而确保基站 被唤醒之后有足够多的业务请求， 同时由于减少了唤醒的基站数量， 避免了多个基站 之间的干扰， 也降低了基站的能耗。
更进一步地， 基站还可以在收到唤醒请求并确定自身不会对其他基站造成干扰 时， 才从休眠状态切换至工作状态， 从而提高基站的工作性能。 比如， 基站可以根据 周围基站的实时状态进行判断， 当周围基站都处于休眠状态时， 则确定不会造成干 扰； 或基站可以对周围基站的信号进行检测， 当信号强度较弱 （小于或等于预设的参 数阈值） 时， 则确定不会造成干扰等。
步骤 612 , 基站从休眠状态切换至工作状态之后， 可以正常发送广播、 同步等各 种消息， 从而既能够与终端进行正常的连接和消息收发， 又能够告知其他接收到相同 唤醒消息的基站， 是这些基站不需要执行状态切换， 避免过多的基站被唤醒后造成相 互干扰。
在上述过程中， 通过多个接收到唤醒请求的基站之间的协商过程， 确定最终从休 眠状态切换至工作状态的一个或多个基站， 尽可能地减少了唤醒基站的数量， 降低了 基站之间的干扰， 实现了唤醒基站的最优化方案； 具体来说， 在基站之间进行协商 时， 可以选择能够为发送唤醒请求的终端提供最优信号质量的基站， 和 /或接收到唤醒 请求最多的基站。 基站之间的协商可以是通过回传链路的协调， 也可以是空中接口信 息的协调。
步骤 614 , 终端根据基站的信息接入唤醒的基站。 终端可以根据接收到的基站发 送的广播、 同步等消息或专门的唤醒通知消息， 来确定被唤醒的基站， 从而可以准确 地接入该被唤醒的基站。
根据本发明的实施方式， 还提供了一种存储在非易失性机器可读介质上的程序产 品， 用于小区干扰协调过程， 所述程序产品包括用于使计算机系统执行以下步骤的机 器可执行指令： 基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的 其他信息。
根据本发明的实施方式， 还提供了一种非易失机器可读介质， 存储有用于小区干 扰协调过程的程序产品， 所述程序产品包括用于使计算机系统执行以下步骤的机器可 执行指令： 基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的其他 信息。
根据本发明的实施方式， 还提供了一种机器可读程序， 所述程序使机器执行如上 所述技术方案中任一所述的小区干扰协调方法。
根据本发明的实施方式， 还提供了一种存储有机器可读程序的存储介质， 其中， 所述机器可读程序使得机器执行如上所述技术方案中任一所述的小区干扰协调方法。
以上结合附图详细说明了本发明的技术方案， 考虑到在现有技术中， 为了避免多 个小区之间相互干扰， 而使没有数据传输的小区进入休眠状态， 但是终端无法搜索到 休眠小区， 也无法在需要进行数据传输时唤醒休眠小区。 因此， 本发明提出了一种新 的小区干扰协调方案， 可以使基站在进入休眠状态时发送导频信息， 在避免对其他基 站造成干扰的同时， 使得终端能够根据接收到的导频信息， 在需要时唤醒休眠的基 站。
以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本领域的技 术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精 ^和原则之内， 所作的 任何修改、 等同替换、 改进等， 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1. 一种小区干扰协调方法， 其特征在于， 包括：
基站在从工作状态切换至休眠状态之后， 停止发送除导频信息之外的其他信息。
2. 根据权利要求 1 所述的小区干扰协调方法， 其特征在于， 还包括： 所述基站 在确定自身满足预设的状态切换条件时， 从工作状态切换至休眠状态；
其中， 所述状态切换条件包括：
小区内不存在激活状态和空闲状态的终端；
或小区内不存在激活状态的终端；
或小区内仅存在空闲状态的终端， 且存在用于所述空闲状态的终端进行驻留的其 他小区；
或小区内存在激活状态的终端和空闲状态的终端， 且存在用于所述激活状态的终 端和所述空闲状态的终端进行驻留的其他小区。
3. 根据权利要求 1所述的小区干扰协调方法， 其特征在于， 还包括：
所述基站仅在部分天线端口发送所述导频信息。
4. 根据权利要求 3所述的小区干扰协调方法， 其特征在于，
当所述导频信息为小区专用导频时， 所述部分天线端口的序号为 2和 /或 3。
5. 根据权利要求 1 至 4 中任一项所述的小区干扰协调方法， 其特征在于， 还包 括：
所述基站接收唤醒请求， 并从休眠状态切换至工作状态。
6. 根据权利要求 5所述的小区干扰协调方法， 其特征在于， 还包括：
所述基站一旦接收到所述唤醒请求， 就从休眠状态切换至工作状态； 或所述基站 在预设时间段内接收到来自多个终端的唤醒请求时， 从休眠状态切换至工作状态； 和 /或所述基站在确定自身不会对其他基站造成干扰的情况下， 从休眠状态切换至 工作状态。
7. 根据权利要求 6 所述的小区干扰协调方法， 其特征在于， 所述基站判断自身 是否会对其他基站造成干扰的过程包括：
所述基站获取指定基站的实时状态信息， 和 /或获取来自所述指定基站的信号的特 征参数；
其中， 若所述指定基站处于休眠状态， 和 /或所述特征参数的数值小于或等于预设 的参数阈值， 则判定所述基站不会对所述指定基站造成干扰。
8. 根据权利要求 5 所述的小区干扰协调方法， 其特征在于， 在所述基站接收到 所述唤醒请求之后， 还包括：
所述基站生成并广播唤醒通知消息， 所述唤醒通知消息中至少包含所述基站的标 识和所述唤醒请求的发送方的标识， 且所述唤醒通知消息用于表明所述基站将要根据 所述发送方的请求， 从休眠状态切换至工作状态； 和 /或所述基站接收到来自其他基站 的唤醒通知消息；
其中， 若所述基站发送所述唤醒通知消息且没有接收到相应的响应消息， 则从休 眠状态切换至工作状态；
若所述基站接收到所述响应消息， 则与所述响应消息的发送方进行协商， 以确定 最终从休眠状态切换至工作状态的基站；
若所述基站接收到来自其他基站的唤醒通知消息， 则返回相应的响应消息或不响 应。
9. 根据权利要求 5 所述的小区干扰协调方法， 其特征在于， 所述唤醒请求中包 含所有目标基站的信息， 则当所述唤醒请求还被发送至其他基站时， 所述小区干扰协 调方法还包括： 所述基站直接与所述其他基站进行协商， 以确定最终从休眠状态切换至工作状态 的基站。
10. 根据权利要求 5所述的小区干扰协调方法， 其特征在于， 还包括： 所述基站在指定的时频资源上接收所述唤醒请求， 且所述唤醒请求包含指定的前 导序列。
1 1. 根据权利要求 10所述的小区干扰协调方法， 其特征在于， 还包括： 所述基站在从工作状态切换至休眠状态之前， 发送自身可用的时频资源和可用的 前导序列集合。
12. 根据权利要求 10所述的小区干扰协调方法， 其特征在于， 还包括： 所述基站在休眠状态时发送的所述导频信息中包含自身可用的前导序列集合。
13. 一种基站， 其特征在于， 包括：
数据处理模块， 用于控制所述基站从工作状态切换至休眠状态；
数据交互模块， 用于在所述基站处于休眠状态时， 停止发送除导频信息之外的其 他信息。
14. 根据权利要求 13所述的基站， 其特征在于，
所述数据处理模块还用于： 判断所述基站是否满足预设的状态切换条件， 且在判 断结果为满足的情况下， 控制所述基站从工作状态切换至休眠状态；
其中， 所述状态切换条件包括：
小区内不存在激活状态和空闲状态的终端；
或小区内不存在激活状态的终端；
或小区内仅存在空闲状态的终端， 且存在用于所述空闲状态的终端进行驻留的其 他小区；
或小区内存在激活状态的终端和空闲状态的终端， 且存在用于所述激活状态的终 端和所述空闲状态的终端进行驻留的其他小区。
15. 根据权利要求 13 所述的基站， 其特征在于， 所述数据交互模块仅在部分天 线端口发送所述导频信息。
16. 根据权利要求 15所述的基站， 其特征在于，
当所述导频信息为小区专用导频时， 所述部分天线端口的序号为 2和 /或 3。
17. 根据权利要求 13至 16中任一项所述的基站， 其特征在于，
所述数据交互模块还用于： 接收唤醒请求； 以及
所述数据处理模块还用于： 在所述数据交互模块接收到所述唤醒请求的情况下， 控制所述基站从休眠状态切换至工作状态。
18. 根据权利要求 17所述的基站， 其特征在于，
所述数据处理模块在所述数据交互模块一旦接收到所述唤醒请求的情况下， 就控 制所述基站从休眠状态切换至工作状态； 或所述数据处理模块在所述数据交互模块在 预设时间段内接收到来自多个终端的唤醒请求的情况下， 控制所述基站从休眠状态切 换至工作状态；
和 /或所述基站还包括干扰确定模块， 用于确定自身是否会对其他基站造成干扰， 其中， 所述数据处理模块在所述干扰确定模块确定自身不会对其他基站造成干扰的情 况下， 从休眠状态切换至工作状态。
19. 根据权利要求 18 所述的基站， 其特征在于， 所述干扰确定模块根据所述数 据交互模块获取的指定基站的实时状态信息， 和 /或根据所述数据交互模块接收到的来 自所述指定基站的信号的特征参数， 确定所述基站是否会对其他基站造成干扰；
其中， 所述干扰确定模块在所述指定基站处于休眠状态， 和 /或所述特征参数的数 值小于或等于预设的参数阈值的情况下， 判定所述基站不会对所述指定基站造成干 扰。
20. 根据权利要求 17所述的基站， 其特征在于， 所述数据处理模块还用于： 生成唤醒通知消息， 所述唤醒通知消息中至少包含所 述基站的标识和所述唤醒请求的发送方的标识， 且所述唤醒通知消息用于表明所述基 站将要根据所述发送方的请求， 从休眠状态切换至工作状态；
所述数据交互模块还用于： 广播所述唤醒通知消息， 和 /或接收到来自其他基站的 唤醒通知消息；
其中， 所述数据处理模块在所述数据交互模块发送所述唤醒通知消息且没有接收 到相应的响应消息的情况下， 控制所述基站从休眠状态切换至工作状态；
所述数据处理模块在所述数据交互模块接收到所述响应消息的情况下， 通过所述 数据交互模块与所述响应消息的发送方进行协商， 以确定最终从休眠状态切换至工作 状态的基站；
所述数据交互模块在接收到来自其他基站的唤醒通知消息的情况下， 还返回所述 数据处理模块相应生成的响应消息或不响应。
21. 根据权利要求 17所述的基站， 其特征在于，
所述数据处理模块还用于： 解析出所述唤醒请求中包含的所有目标基站的信息， 并在所述唤醒请求还被发送至其他基站的情况下， 通过所述数据交互模块直接与所述 其他基站进行协商， 以确定最终从休眠状态切换至工作状态的基站。
22. 根据权利要求 17 所述的基站， 其特征在于， 所述数据交互模块在指定的时 频资源上接收所述唤醒请求， 且所述唤醒请求包含指定的前导序列。
23. 根据权利要求 22 所述的基站， 其特征在于， 所述数据交互模块在所述数据 处理模块控制所述基站从工作状态切换至休眠状态之前， 发送自身可用的时频资源和 可用的前导序列集合。
24. 根据权利要求 22 所述的基站， 其特征在于， 所述数据交互模块在所述基站 处于休眠状态时， 发送包含所述基站可用的前导序列集合的所述导频信息。
25. 一种小区干扰协调方法， 其特征在于， 包括：
终端接收处于休眠状态的基站发送的导频信息；
所述终端根据所述导频信息生成唤醒请求， 并向所述基站发送所述唤醒请求， 所 述唤醒请求用于请求所述基站从休眠状态切换至工作状态。
26. 根据权利要求 25所述的小区干扰协调方法， 其特征在于， 还包括： 所述终端主动生成所述唤醒请求；
或所述终端根据接收到的触发请求， 生成所述唤醒请求， 其中， 所述触发请求由 无线移动通信网络通过所述终端驻留的小区发送至所述终端。
27. 根据权利要求 25所述的小区干扰协调方法， 其特征在于， 还包括： 所述终端测量接收到的所述导频信息；
其中， 当测量结果表明所述导频信息的特征参数的数值优于预设参数阈值时， 所 述终端向对应的基站发送所述唤醒请求；
或根据测量结果表明的所有的所述导频信息对应的特征参数的数值， 所述终端从 中选择指定数量的最优的导频信息， 并向对应的基站发送所述唤醒请求；
或在对应的特征参数的数值优于预设参数阈值的所有导频信息中， 所述终端选择 指定数量的最优的导频信息， 并向对应的基站发送所述唤醒请求。
28. 根据权利要求 25至 27中任一项所述的小区干扰协调方法， 其特征在于， 还 包括：
所述终端根据从驻留的小区获取的所述基站可用的时频资源和可用的前导序列集 合， 生成包含指定的前导序列的所述唤醒请求， 并在所述可用的时频资源发送所述唤 醒请求。
29. 根据权利要求 25至 27中任一项所述的小区干扰协调方法， 其特征在于， 还 包括：
所述终端从接收到的所述基站发送的所述导频信息中， 解析出所述基站可用的前 导序列集合。
30. 根据权利要求 25至 27中任一项所述的小区干扰协调方法， 其特征在于， 还 包括：
所述终端接收所述基站发送的所述导频信息， 从所述导频信息中获取所述基站的 标识， 并从预设的表格查询到对应于所述标识的、 所述基站可用的前导序列集合； 其中， 所述预设的表格中至少关联存储有所述基站的标识和所述基站可用的前导 序列集合。
31. 一种终端， 其特征在于， 包括：
数据交互模块， 用于接收处于休眠状态的基站发送的导频信息， 并发送数据处理 模块生成的唤醒请求；
所述数据处理模块， 用于根据所述导频信息生成所述唤醒请求， 所述唤醒请求用 于请求所述基站从休眠状态切换至工作状态。
32. 根据权利要求 31所述的终端， 其特征在于，
所述数据处理模块主动生成所述唤醒请求；
或所述数据处理模块根据所述数据交互模块接收到的触发请求， 生成所述唤醒请 求， 其中， 所述触发请求由无线移动通信网络通过所述终端驻留的小区发送至所述终 端。
33. 根据权利要求 31 所述的终端， 其特征在于， 所述数据处理模块还用于测量 接收到的所述导频信息；
其中， 所述数据交互模块在测量结果表明所述导频信息的特征参数的数值优于预 设参数阈值的情况下， 向对应的基站发送所述唤醒请求；
或所述数据处理模块根据测量结果表明的所有的所述导频信息对应的特征参数的 数值， 从中选择指定数量的最优的导频信息， 并由所述数据交互模块向对应的基站发 送所述唤醒请求；
或所述数据处理模块在对应的特征参数的数值优于预设参数阈值的所有导频信息 中， 选择指定数量的最优的导频信息， 并由所述数据交互模块向对应的基站发送所述 唤醒请求。
34. 根据权利要求 31至 33中任一项所述的终端， 其特征在于，
所述数据交互模块还用于从所述终端驻留的小区获取的所述基站可用的时频资源 和可用的前导序列集合；
所述数据处理模块还用于生成包含指定的前导序列的所述唤醒请求， 以由所述数 据交互模块在所述可用的时频资源进行发送。
35. 根据权利要求 31至 33中任一项所述的终端， 其特征在于，
所述数据处理模块还用于从所述数据交互模块接收到的来自所述基站的所述导频 信息中， 解析出所述基站可用的前导序列集合。
36. 根据权利要求 31至 33中任一项所述的终端， 其特征在于，
所述数据处理模块还用于从所述数据交互模块接收到的来自所述基站的所述导频 信息中获取所述基站的标识， 并从预设的表格查询到对应于所述标识的、 所述基站可 用的前导序列集合；
其中， 所述预设的表格中至少关联存储有所述基站的标识和所述基站可用的前导 序列集合。
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107371209A (zh) * 2016-05-12 2017-11-21 北京信威通信技术股份有限公司 一种基站建立网络的方法及系统
CN114258114A (zh) * 2020-09-22 2022-03-29 展讯通信（上海）有限公司 一种数据传输方法及通信装置
WO2022155958A1 (en) * 2021-01-25 2022-07-28 Nokia Shanghai Bell Co., Ltd. Wake up procedure for hibernating cell
WO2023221819A1 (zh) * 2022-05-16 2023-11-23 维沃移动通信有限公司 信号发送条件确定方法、ssb周期控制方法、装置、终端和网络侧设备

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI613926B (zh) * 2016-11-09 2018-02-01 財團法人工業技術研究院 小型基地台及其應用的省電方法
WO2018126462A1 (zh) * 2017-01-06 2018-07-12 华为技术有限公司 一种通信方法、相关设备及系统
CN111770561A (zh) * 2017-08-28 2020-10-13 上海朗帛通信技术有限公司 一种被用于节省功率的用户、基站中的方法和装置
CN111212465B (zh) * 2020-01-15 2023-01-17 海能达通信股份有限公司 一种数据传输方法、基站、终端及系统
US11588600B2 (en) * 2021-01-25 2023-02-21 Qualcomm Incorporated Antenna selection for sounding reference signal antenna switching
CN115379534A (zh) * 2021-05-18 2022-11-22 华为技术有限公司 通信方法和通信装置
CN114845366B (zh) * 2022-05-30 2023-10-27 中国电信股份有限公司 基站的唤醒方法及系统、用户终端、基站、存储介质
CN117279074A (zh) * 2022-06-14 2023-12-22 维沃移动通信有限公司 节能唤醒方法、装置、终端、基站及存储介质
WO2024069205A1 (en) * 2022-09-28 2024-04-04 Orope France Sarl Apparatus and method for transmission and reception of wake up signals
CN115643643B (zh) * 2022-12-26 2023-08-01 深圳酷源数联科技有限公司 5g信号的请求、发送及通信方法及终端、基站和介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102111816A (zh) * 2011-03-22 2011-06-29 北京邮电大学 节能的毫微微网络系统及节能方法
WO2012089162A1 (zh) * 2010-12-31 2012-07-05 华为技术有限公司 一种实现通信系统节能的方法及设备
CN102761902A (zh) * 2011-04-29 2012-10-31 华为技术有限公司 容量站激活的方法及无线通信装置与系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100839966B1 (ko) * 2005-06-29 2008-06-20 삼성전자주식회사 통신 시스템에서 링크의 상태 보고 방법 및 시스템
US7567791B2 (en) * 2005-09-19 2009-07-28 Qualcomm Incorporated Wireless terminal methods and apparatus for use in a wireless communications system that uses a multi-mode base station
US8792894B2 (en) 2008-12-29 2014-07-29 Zte Corporation Method and system for realizing energy saving control of BS
CN102860095A (zh) * 2010-04-30 2013-01-02 交互数字专利控股公司 家庭节点识别、干扰减少和能量节约
US9585091B2 (en) * 2012-08-17 2017-02-28 Qualcomm Incorporated Systems and methods for low power wake up signal and operations for WLAN

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012089162A1 (zh) * 2010-12-31 2012-07-05 华为技术有限公司 一种实现通信系统节能的方法及设备
CN102111816A (zh) * 2011-03-22 2011-06-29 北京邮电大学 节能的毫微微网络系统及节能方法
CN102761902A (zh) * 2011-04-29 2012-10-31 华为技术有限公司 容量站激活的方法及无线通信装置与系统

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3032880A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107371209A (zh) * 2016-05-12 2017-11-21 北京信威通信技术股份有限公司 一种基站建立网络的方法及系统
CN114258114A (zh) * 2020-09-22 2022-03-29 展讯通信（上海）有限公司 一种数据传输方法及通信装置
WO2022062818A1 (zh) * 2020-09-22 2022-03-31 展讯通信（上海）有限公司 一种数据传输方法及通信装置
WO2022155958A1 (en) * 2021-01-25 2022-07-28 Nokia Shanghai Bell Co., Ltd. Wake up procedure for hibernating cell
WO2023221819A1 (zh) * 2022-05-16 2023-11-23 维沃移动通信有限公司 信号发送条件确定方法、ssb周期控制方法、装置、终端和网络侧设备

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