WO2015113276A1 - 小区覆盖增强模式的指示方法和基站 - Google Patents

小区覆盖增强模式的指示方法和基站 Download PDF

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Publication number
WO2015113276A1
WO2015113276A1 PCT/CN2014/071804 CN2014071804W WO2015113276A1 WO 2015113276 A1 WO2015113276 A1 WO 2015113276A1 CN 2014071804 W CN2014071804 W CN 2014071804W WO 2015113276 A1 WO2015113276 A1 WO 2015113276A1
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WO
WIPO (PCT)
Prior art keywords
terminal
base station
coverage enhancement
system information
information
Prior art date
Application number
PCT/CN2014/071804
Other languages
English (en)
French (fr)
Inventor
夏金环
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP14880582.3A priority Critical patent/EP3091806B1/en
Priority to CN201480000369.0A priority patent/CN105264987B/zh
Priority to PCT/CN2014/071804 priority patent/WO2015113276A1/zh
Publication of WO2015113276A1 publication Critical patent/WO2015113276A1/zh
Priority to US15/223,260 priority patent/US10264549B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02Arrangements for increasing efficiency of notification or paging channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/28Timers or timing mechanisms used in protocols
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24Cell structures
    • H04W16/26Cell enhancers or enhancement, e.g. for tunnels, building shadow
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W68/00User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08Access point devices
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to communication technologies, and in particular, to a method and a base station for indicating a cell coverage enhancement mode. Background technique
  • the actual coverage of a cell is determined by a number of factors, including the frequency of the carrier, the receiver performance of the terminal, and so on.
  • the frequency of the carrier will be considered on the one hand, and the network will be deployed in combination with the channel environment and the receiver performance of the terminal.
  • most of the terminals User Equipment, hereinafter referred to as UE
  • UE User Equipment
  • a terminal located in a basement receives 10 to 20 dB less energy or power than a terminal located on the ground.
  • the method of enhanced transmission may be slightly different for different physical channels, but the basic enhancement method is: repeatedly transmitting information on the physical channel at a predefined resource location, so that the peer receiver can combine to receive multiple transmission copies, thereby Improve reception performance.
  • the predefined resource location herein refers to a predefined additional resource in addition to the resources used to transmit normal physical channel information.
  • the network Since the number of UEs in a harsh environment is relatively small, when the network status is busy, the network has the right to choose not to serve these UEs in a harsh environment, that is, to select the coverage enhancement mode to ensure the effective use of the spectrum and ensure high
  • the priority ordinary UE is given priority.
  • the base station determines whether the condition of the preset activation enhancement scheme is reached; if yes, the resource and the terminal used by the base station according to the pre-agreed enhancement scheme. Communicate; or, the base station is dynamically configured
  • the method and the terminal negotiate the resources used by the enhanced scheme, and communicate according to the resources and terminals used by the enhanced scheme.
  • the UE indicates the support of the actual coverage enhancement mode.
  • the embodiment of the present invention provides a cell coverage enhancement mode indication method and a base station, which are used to solve the technical problem that the base station cannot accurately indicate the support situation of the actual coverage enhancement mode to the UE in the prior art.
  • an embodiment of the present invention provides a base station, including:
  • a transmitter configured to send system information to the terminal, where the system information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement; where the system information includes a primary system information block MIB and/or system information. Block SIB.
  • the system information is first system information
  • the first system information includes coverage enhancement mode indication information
  • the transmitter is configured to send the first system to the terminal on the first time-frequency resource of the at least one first period.
  • the information is used to enable the terminal to learn, according to the coverage enhancement mode indication information, whether a cell covered by the base station supports coverage enhancement.
  • the coverage enhancement mode indication information is in the SIB The indication bit or the scheduling information of the SIBX; wherein the SIBX is a coverage enhanced public radio resource configuration information block.
  • the system information is the second system information
  • the transmitter is specifically configured to use the second time frequency in the at least one second period.
  • the resource sends the second system information to the terminal, so that the terminal learns the cell support coverage enhancement covered by the base station according to the second system information.
  • the base station further includes:
  • a processor configured to, after the transmitter sends the second system information to the terminal, negotiate with the terminal to send at least one second period of the second system information.
  • the transmitter is further configured to send the a paging message, where the first paging message includes coverage enhancement status indication information, and is used to indicate to the terminal, a current coverage enhancement status of a cell covered by the base station.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode a radio resource common information parameter, if the current coverage enhancement state of the cell covered by the base station changes and/or the system coverage enhanced mode radio resource common information parameter changes, the transmitter is further used to the terminal Sending a second paging message, where the second paging message is used to indicate to the terminal that a current coverage enhancement state of a cell covered by the base station changes and/or the system coverage enhanced mode radio resource common information parameter A change occurs, so that the terminal reacquires new system information, and learns, according to the new system information, a coverage enhancement state of the changed cell covered by the base station and/or the system coverage enhanced mode radio resource public information. parameter.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode a radio resource common information parameter, if the current coverage enhancement status of the cell covered by the base station changes, the transmitter is further configured to send a third paging message to the terminal;
  • the coverage enhancement status indication information is used to enable the terminal to learn the coverage enhancement status of the changed cell coverage by the base station according to the coverage enhancement status indication information in the third paging message.
  • the system information includes: a quantity of resources used by the coverage enhancement mode, and a maximum number of access times of the cell that the terminal attempts to access the coverage of the base station And determining, by the terminal, the current coverage enhancement status of the cell covered by the base station according to whether the number of times the accessing the cell covered by the base station reaches the maximum access times.
  • a base station including:
  • a sending module configured to send system information to the terminal, where the system information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement; wherein the system information includes a primary system information block MIB and/or system information. Block SIB.
  • the system information is first system information
  • the first system information includes coverage enhancement mode indication information
  • the sending module is configured to send the first system to the terminal on the first time-frequency resource of the at least one first period, where the cell is configured to indicate to the terminal whether the cell covered by the base station supports the coverage enhancement.
  • the information is used to enable the terminal to learn, according to the coverage enhancement mode indication information, whether a cell covered by the base station supports coverage enhancement.
  • the coverage enhancement mode indication information is in the SIB The indication bit or the scheduling information of the SIBX; wherein the SIBX is a coverage enhanced public radio resource configuration information block.
  • the system information is the second system information
  • the sending module is specifically configured to use the second time frequency in the at least one second period.
  • the resource sends the second system information to the terminal, so that the terminal learns the cell support coverage enhancement covered by the base station according to the second system information.
  • the sending module sends the second system information twice in a time interval that is not greater than the first preset period.
  • the base station further includes:
  • the negotiation module is configured to, after the sending module sends the second system information to the terminal, negotiate with the terminal to send at least one second period of the second system information.
  • the sending module is further configured to send the a paging message, where the first paging message includes coverage enhancement status indication information, and is used to indicate to the terminal, a current coverage enhancement status of a cell covered by the base station.
  • the system information includes a coverage enhancement state indication information and a coverage enhancement mode radio resource common information parameter, where a current coverage enhancement state of the cell covered by the base station changes and/or
  • the sending module is further configured to send a second paging message to the terminal, where the second paging message is used to indicate to the terminal that the system information is changed.
  • the current coverage enhancement status of the cell covered by the base station is changed and/or the system coverage enhanced mode radio resource common information parameter is changed, so that the terminal reacquires new system information, and learns according to the new system information.
  • the coverage enhancement state of the cell covered by the changed base station and/or the system coverage enhanced mode radio resource common information parameter is changed.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode a radio resource common information parameter, if the current coverage enhancement status of the cell covered by the base station changes, the sending module is further configured to send a third paging message to the terminal;
  • the coverage enhancement status indication information is used to enable the terminal to learn the coverage enhancement status of the changed cell coverage by the base station according to the coverage enhancement status indication information in the third paging message.
  • the system information includes: a quantity of resources used by the coverage enhancement mode, and a maximum number of access times of the cell that the terminal attempts to access the coverage of the base station And determining, by the terminal, the current coverage enhancement status of the cell covered by the base station according to whether the number of times the accessing the cell covered by the base station reaches the maximum access times.
  • an embodiment of the present invention provides a method for indicating a cell coverage enhancement mode, including:
  • the base station sends system information to the terminal, where the system information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement.
  • the system information includes a primary system information block MIB and/or a system information block SIB.
  • the system information is first system information
  • the first system information includes coverage enhancement mode indication information, the coverage enhancement mode indication information And indicating, to the terminal, whether the cell covered by the base station supports the coverage enhancement; and the sending, by the base station, the system information to the terminal, including: Sending, by the base station, the first system information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal, according to the coverage enhancement mode indication information, whether the cell covered by the base station is supported Coverage enhancement.
  • the coverage enhancement mode indication information is in the SIB The indication bit or the scheduling information of the SIBX; wherein the SIBX is a coverage enhanced public radio resource configuration information block.
  • the system information is the second system information
  • the sending, by the base station, system information to the terminal includes:
  • the second time-frequency resource of the base station in the at least one second period sends the second system information to the terminal, so that the terminal learns that the cell coverage coverage enhanced by the base station is enhanced according to the second system information.
  • the second time-frequency resource of the base station in the at least one second period sends a second to the terminal System information, including:
  • the time interval at which the base station sends the second system information twice is not greater than the first preset time period.
  • the second time-frequency resource of the base station in the at least one second period sends the second time to the terminal Before the system information, it also includes:
  • the base station negotiates with the terminal to send at least one second period of the second system information.
  • the method further includes:
  • the base station sends a first paging message to the terminal, where the first paging message includes coverage enhancement status indication information, and is used to indicate to the terminal, a current coverage enhancement status of the cell covered by the base station.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode a radio resource common information parameter, if a current coverage enhancement state of a cell covered by the base station changes and/or a system coverage enhanced mode radio resource common information parameter is sent If the change occurs, the method further includes:
  • the enhanced mode radio resource common information parameter is changed, so that the terminal reacquires new system information, and according to the new system information, the changed coverage enhancement status of the cell covered by the changed base station and/or the system is learned. Covers enhanced mode radio resource common information parameters.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode
  • the radio resource common information parameter if the current coverage enhancement status of the cell covered by the base station changes, the method further includes:
  • the base station sends a third paging message to the terminal; the third paging message carries the coverage enhancement status indication information, so that the terminal according to the coverage enhancement status indication information in the third paging message
  • the coverage enhancement status of the cell covered by the changed base station is known.
  • the system information includes a quantity of resources used by the coverage enhancement mode and a maximum number of access times of the cell that the terminal attempts to access the coverage of the base station And determining, by the terminal, the current coverage enhancement status of the cell covered by the base station according to whether the number of times the accessing the cell covered by the base station reaches the maximum access times.
  • the method for indicating the cell coverage enhancement mode and the base station provided by the embodiment of the present invention are configured to send, by the transmitter, the system information indicating whether the cell covered by the base station supports the coverage enhancement, so that the terminal can accurately know whether the cell supports the coverage enhanced mode communication. And when the cell does not support the coverage enhanced mode communication, the terminal is notified in time, the blind access of the terminal is avoided, and the power consumption of the terminal is saved.
  • 1 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention
  • 2 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention
  • FIG. 3 is a flowchart of Embodiment 2 of a method for indicating a cell coverage enhancement mode according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the terminal involved in the present application may be a wireless terminal or a wired terminal.
  • the terminal may be a terminal that needs to communicate through the coverage enhancement mode in a harsh environment.
  • the wireless terminal can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device that is connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
  • RAN Radio Access Network
  • the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • a wireless terminal may also be called a system, a subscriber unit (Subscriber Unit), a subscriber station (Subscriber Stat ion), a mobile station (Mobi le Station), a mobile station (Mobi le), a remote station (Remote Station), an access point (Access). Point), Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment.
  • the base station (for example, an access point) involved in the present application may be an access point (WLAN) of the WLAN, and may also refer to an access network that communicates with the wireless terminal through one or more sectors on the air interface. device.
  • the base station can be configured to convert the received air frame and the IP packet to each other as a router between the wireless terminal and the rest of the access network, wherein the rest of the access network It can include an internet protocol (IP) network.
  • IP internet protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), this application is not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station in LTE
  • LTE NodeB or eNB or e-NodeB, evolutional Node B
  • a first embodiment of the present invention provides a base station, where the base station includes: a transmitter 10, configured to send system information to a terminal, where the system information is used to indicate to the terminal whether a cell covered by the base station supports coverage enhancement;
  • the system information includes a master information block (MIB) and/or a system information block (SIB).
  • MIB master information block
  • SIB system information block
  • the transmitter 10 sends the system information to the terminal, and may use different resources according to the normal transmission method specified in the standard or the enhanced transmission mode, and the system resources used to transmit the system information according to different transmission methods are different.
  • the system channel can be MIB, SIB, or MIB and SIB.
  • the SIB here may be one or multiple (SIB1, SIB2, SIB3, etc.).
  • the transmitter 10 transmits the MIB on a Physical Broadcast Channel (PBCH) in accordance with the transmission mode of the MIB specified in the standard.
  • PBCH Physical Broadcast Channel
  • the PBCH is transmitted in a period of 40 ms, and is transmitted in four consecutive radio frames in four segments.
  • the MIB information carried by the PBCH is the same in one cycle; the PBCH segment in each radio frame is transmitted only in the first subframe. Moreover, only the first 4 OFDM symbols in the second time slot are occupied. Therefore, these 0FDM symbols and the used subframes are the time-frequency resources used to transmit system information.
  • the enhanced MIB refers to the MIB copy sent on the additional resources predefined in the MIB transmission period.
  • the embodiment of the present invention does not limit the resource mapping method used by the enhanced MIB.
  • the MIB enhanced transmission mode is transmitted in 4 consecutive radio frames in 4 ms, but in the first subframe of each radio frame, except for the first 4 slots of the second slot.
  • the 0FDM symbol is used as the PBCH mapping, and the PBCH is repeatedly mapped using the last 3 OFDM symbols of the first slot and the 5th OFDM symbol of the second slot.
  • the last 3 OFDM symbols of the first time slot and the MIB transmitted on the 5th OFDM symbol of the second time slot are enhanced MIBs, and the last 3 OFDM symbols and the first time slot of the first time slot
  • the 5th OFDM symbol of the two slots is in the MIB transmission period. Pre-defined additional resources.
  • the system information provided by the embodiment of the present invention may indicate to the terminal whether the cell covered by the base station supports the coverage enhancement, that is, the system information provided by the embodiment of the present invention is covered by the base station.
  • the coverage of the cell is enhanced to indicate the actual support situation to the terminal.
  • the system information may indicate the coverage enhancement of the cell to the terminal through the corresponding indication bit, and may also carry other indication information to indicate the coverage of the cell to the terminal.
  • the enhanced support situation the embodiment of the present invention does not limit the manner in which the system information indicates the coverage enhancement of the cell to the terminal.
  • the system information can enable the terminal to know the support of accurate cell coverage enhancement. When the terminal learns that the cell supports coverage enhanced mode communication, the terminal can access the cell and communicate with the base station through the coverage enhancement mode.
  • the embodiment of the present invention prevents the base station from indicating its default support condition to the terminal when the coverage enhancement mode is not supported, which causes the terminal to be blindly accessed all the time, so that the power consumption of the terminal is too large or the error is always reported to the upper layer.
  • the base station provided by the embodiment of the present invention sends a system for indicating whether the cell covered by the base station supports coverage enhancement by using a transmitter, so that the terminal can accurately know whether the cell supports coverage enhanced mode communication, and does not support the coverage enhancement mode in the cell.
  • the terminal is informed in time when communication, avoiding blind access of the terminal and saving power consumption of the terminal.
  • the embodiment relates to a process in which the transmitter 10 sends system information to the terminal when the system information is the first system information.
  • the first system information may be ordinary system information, that is, system information transmitted in accordance with a standard delivery method (i.e., system information not transmitted on additional resources).
  • the first system information includes coverage enhancement mode indication information, and the coverage enhancement mode indication information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement.
  • the transmitter 10 is configured to send the first system information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal learns, according to the coverage enhancement mode indication information, whether the cell covered by the base station supports coverage. Enhanced.
  • the first period may be a period for transmitting system information, and may be a transmission period (40 ms) of the MIB, or may be a transmission period of the SIB.
  • the first time-frequency resource refers to a time-frequency resource for transmitting a normal MIB or an SIB according to a standard transmission mode, and may be, for example, a second time slot in a first subframe in a radio frame used for transmitting the MIB. And the first 4 OFDM symbols on the second time slot.
  • the transmitter 10 transmits the first system information in one or more first cycles, through the first system
  • the coverage enhancement mode indication information included in the system information informs the support situation of the coverage enhancement mode of the cell covered by the terminal base station.
  • the coverage enhancement mode indication information may be an idle bit in the MIB or an indication bit in the SIB.
  • the coverage enhancement mode indication information may also be used.
  • the SIBX is a public radio resource configuration information block for coverage enhancement. That is to say, the public radio resource configuration information about coverage enhancement is defined as SIBX (the SIBX may be one or several SIBs), and SIBX scheduling information is added in SIB1 (SIB1 includes SIB2, SIB3, SIBX, etc.) Block scheduling information), at this time, additional bits may not be needed to indicate whether the cell coverage is enhanced, and the terminal determines whether the cell supports coverage enhanced mode communication by determining whether SIB1 includes enhanced SIBX scheduling information; In the extended domain of the SIB, the terminal also needs to demodulate into a specific SIB to obtain information about whether the cell supports coverage enhancement. When the cell supports the coverage enhanced mode communication, the SIB1 sent by the transmitter 10 to the terminal carries the scheduling information of the SIBX, so that the terminal can know whether the cell supports the coverage enhancement mode by whether the SIB1 carries the scheduling information of the SIB1.
  • the SIB1 sent in the previous first period does not carry the scheduling information of the SIBX
  • the SIB1 sent in the next period or the next period carries the scheduling information of the SIBX
  • the SIBX is carried.
  • the time of the SIB1 of the scheduling information and the time of transmitting the SIB1 that does not carry the scheduling information of the SIBX are within a predetermined period of time, and the terminal may also consider that the cell supports the coverage enhancement mode.
  • the base station provided by the embodiment of the present invention sends the first system information including the coverage enhancement mode indication information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal can make the information according to the coverage enhancement mode indication information.
  • the terminal can accurately know whether the cell supports coverage enhanced mode communication, and timely informs the terminal when the cell does not support coverage enhanced mode communication, thereby avoiding blind access of the terminal and saving power consumption of the terminal.
  • the embodiment relates to a process in which the transmitter 10 sends system information to the terminal when the system information is the second system information.
  • the second system information may be system information transmitted according to the enhanced transmission mode, that is, a copy of the common system information sent on an additional resource in a period in which the system information is transmitted.
  • the second system information may be enhanced.
  • the transmitter 10 is configured to send the second system information to the terminal in the second time-frequency resource in the at least one second period, so that the terminal learns the cell support coverage covered by the base station according to the second system information. Enhanced.
  • the second period may be the same as the first period, and the number of the second period may be the same as or different from the number of the first period.
  • the second period may be a period in which the enhanced system information is transmitted, and may be a period in which the enhanced MIB is transmitted (40 ms), or may be a period in which the enhanced SIB is transmitted.
  • the enhanced system information herein may be a copy of the first system information transmitted on additional time-frequency resources within a period in which the first system information is transmitted.
  • the enhanced MIB may be the MIB transmitted in the last 3 OFDM symbols of the first slot and the 5th OFDM symbol of the second slot in the above embodiment.
  • the second time-frequency resource in the second period may actually be the last 3 OFDM symbols of the first slot and the 5th OFDM symbol of the second slot.
  • the second time-frequency resource used by the transmitter 10 when transmitting the second system information has a corresponding resource mapping on the terminal side, that is, which resources are used by the transmitter 10 as the second time-frequency resource to send the second system information terminal. It is ok to know. Therefore, as long as the transmitter 10 sends the second system information to the terminal, the terminal can learn that the system information is enhanced system information according to the resource mapping on the terminal side, indicating that the cell covered by the base station supports coverage enhancement.
  • time interval for the transmitter 10 to send the second system information twice is not greater than the first preset time period.
  • the transmitter 10 transmits one or more second periods used by the second system information.
  • the transmitter 10 does not transmit the second system information in every second period (the second period of transmitting the second system information) It may be negotiated by the base station and the terminal, or may be determined by the base station itself. It may send a second system information at time T1, and then send the second system information again at time T2. From time T2, the next base station transmits the next system information.
  • the interval of the second system information is not greater than the first preset time period, and the first preset time period may be explicitly specified in the protocol, such as the time of 10 radio frames, or the time of 10 PBCH cycles.
  • the base station provided by the embodiment of the present invention sends the second system information to the terminal on the second time-frequency resource of the at least one second period, so that the terminal can accurately know whether the cell supports the coverage enhanced mode communication according to the second system information. And timely notifying the terminal when the cell does not support coverage enhanced mode communication, avoiding blind access of the terminal, and saving power consumption of the terminal.
  • FIG. 1 is a schematic structural diagram of Embodiment 2 of a base station according to the present invention.
  • the second embodiment involved in this embodiment The system information is an enhanced SIB.
  • the base station further includes: a processor 11 configured to, after the transmitter 10 sends the second system information to the terminal, negotiate with the terminal to send the second system information. At least one second period.
  • the processor 11 negotiates with the terminal that the transmitter 10 transmits the second period of the enhanced SIB, that is, in which second periods, the enhanced SIB is negotiated, and in which second periods, the enhanced SIB is not transmitted. After the processor 11 determines the second period in which the enhanced SIB is transmitted, the transmitter 10 transmits the enhanced SIB on the second time-frequency resource in the second period.
  • the enhanced SIB may be a normal SIB that is repeatedly transmitted on the second time-frequency resource, and the content of the SIB that is repeatedly sent on the second time-frequency resource in each second period is the same.
  • the resource configuration information (including the scheduling information including the SIBX) is required to be included in the coverage enhancement mode.
  • the enhanced SIB may also refer to the SIB that carries the SIBX scheduling information that is sent only in the determined second period of the enhanced SIB. However, the scheduling information of the SIBX is not included in the SIB transmitted in the other second period.
  • the base station provided by the embodiment of the present invention sends a second period of the enhanced SIB by the processor and the terminal, and sends the enhanced SIB to the terminal on the second time-frequency resource in the second period of the negotiation, so that the terminal can
  • the enhanced SIB accurately knows whether the cell supports the coverage enhanced mode communication, and notifies the terminal in time when the cell does not support the coverage enhanced mode communication, thereby avoiding blind access of the terminal and saving power consumption of the terminal.
  • the system information sent by the transmitter to the terminal indicates whether the cell covered by the base station supports coverage enhancement.
  • the cell covered by the base station is often supported to support coverage enhancement, but at a certain At the same time, the coverage enhancement status of the cell is closed, which may easily cause the terminal to try to access when the cell coverage coverage supported by the base station is enhanced, so that the power consumption of the terminal is increased. Therefore, in order to avoid this, the following embodiment further indicates to the terminal whether the current coverage enhancement status of the cell is on or off in the case where the cell supports coverage enhancement.
  • the following embodiments take the system information as an example of SIB.
  • the transmitter 10 in this embodiment indicates the cell to the terminal by sending a first paging message to the terminal.
  • the transmitter 10 is further configured to send a first paging message to the terminal, where the first paging message includes coverage enhancement status indication information, and is used to indicate, to the terminal, a cell covered by the base station. Current coverage enhancement status.
  • the terminal obtains a system frame number (hereinafter referred to as SFN) by detecting the PBCH, where the PBCH may be a normal PBCH (PBCH sent according to a standard specified transmission manner), or may be an enhanced PBCH (according to the enhancement).
  • SFN system frame number
  • SFN system frame number
  • the terminal may also obtain the current coverage enhancement status of the cell by using the first paging message that is sent by the transmitter 10 and carrying the coverage enhancement status indication information. Whether the terminal is open or closed, that is, the terminal can clearly know the current coverage enhancement status of the cell, so that when the current coverage enhancement status of the cell is closed, the terminal does not always try to access the cell, and the power consumption of the terminal is reduced.
  • the base station provided by the embodiment of the present invention sends the system information to the terminal through the transmitter, so that the terminal obtains the support of the cell coverage enhancement mode covered by the base station according to the system information; and sends the coverage enhancement status indication information to the terminal by using the transmitter.
  • a paging message is used to enable the terminal to learn the current coverage enhancement status of the cell according to the coverage enhancement indication information, and avoid blind access of the terminal when the current coverage enhancement status of the cell is closed, thereby further reducing power consumption of the terminal.
  • the transmitter 10 in this embodiment indicates to the terminal that the cell coverage enhancement state change and/or coverage is provided to the terminal by using the second paging message to the terminal.
  • the transmitter 10 is further configured to send a second paging message to the terminal, where The second paging message is used to indicate to the terminal that the current coverage enhancement status of the cell covered by the base station changes and/or the system coverage enhancement mode radio resource common information parameter changes, so that the terminal reacquires New system information, and the coverage enhancement status of the changed cell and/or the system coverage enhancement mode radio resource common information parameter are learned according to the new system information.
  • the terminal obtains the SFN by detecting the PBCH, where the PBCH may be a normal PBCH (PBCH transmitted according to a standard specified transmission manner), or may be an enhanced PBCH (PBCH transmitted according to an enhanced manner), and the base station and the terminal may be configured according to The obtained SFN pre-defined enhanced transmission period, that is, the second period of transmitting the enhanced SIB described above. If the terminal is an SFN obtained by detecting normal PBCH transmission, it is possible to know whether the cell supports the coverage enhancement mode by checking the coverage enhancement mode indication information included in SIB1.
  • the terminal When the terminal is configured to support the coverage enhancement according to the coverage enhancement indication information in the SIB or the enhanced SIB, the terminal may also learn that the current coverage enhancement status of the cell is enabled according to the coverage enhancement status indication information included in the system information sent by the transmitter 10. It is still closed, that is, the terminal can clearly know the current coverage enhancement status of the cell, so that when the current coverage enhancement status of the cell is closed, the terminal does not always try to access the cell, and the power consumption of the terminal is reduced.
  • the manner of transmitting the enhanced SIB may be various, which are:
  • the transmitter 10 calculates the location of the period in which the enhanced SIB is transmitted according to the predefined rules of the base station and the terminal, for example, by the SFN (the definition of the enhanced SIB is as described above).
  • the transmitter 10 transmits an enhanced SIB according to a specific time-frequency resource defined by the base station and the terminal in the time period in which the enhanced SIB is sent; and the coverage enhancement status indication carried in the SIB1 in the enhanced SIB
  • the information can be indicated according to the current actual situation of the cell.
  • the scheduling information of the SIBX may not be included.
  • the second type when the transmitter 10 sends the enhanced SIB at the predefined time-frequency resource location, when the state indicated by the coverage enhancement status indication information in the SIB1 is off, the SIB1 includes the public information of the radio resource in the coverage enhanced mode.
  • the SIBX may not be scheduled, that is, the SIB1 may not carry the coverage enhancement mode indication information.
  • the third type: The SIBX scheduling information may or may not be included in the extended domain of the SIB.
  • the scheduling information of the SIBX, or the coverage enhancement status of the cell indicated by the coverage enhancement status indication information in the SIB1 or the radio resource common information parameter in the enhanced mode may be changed, and the second paging message may not be sent to the normal UE.
  • the radio resource common information parameter changes in the coverage enhancement state or the enhanced mode of the cell, it is necessary to send a second paging message to notify the change that the coverage enhanced terminal needs to be covered.
  • the second paging message may indicate to the terminal that the current coverage enhancement status of the cell covered by the base station changes and/or the system coverage enhanced mode radio resource common information parameter changes, so that the terminal may reacquire new system information, and according to the new The coverage enhancement status in the system information and the radio resource common information parameter in the enhanced mode learn the coverage enhancement status of the changed cell and/or the radio resource common information parameter in the enhanced mode.
  • the fourth type If the number of time-frequency resources predefined by the base station and the terminal is large, in order to improve resource efficiency, the transmitter 10 does not necessarily send the enhanced SIBo on each predefined time-frequency resource as long as the terminal does not detect. To, you can try to try again at the next predefined time-frequency resource location. And, when the terminal learns that the current coverage enhancement status of the cell is on, according to the coverage enhancement status indication information, the terminal considers that the current cell has been working in the coverage enhancement mode, and may initiate communication with the base station according to the configuration of the radio resource in the enhanced mode in the SIB. When the status of the CEM detected by the terminal is off, the UE determines, according to actual needs, when to detect whether the coverage enhancement status of the cell indicated by the coverage enhancement status indication information in the SIB turns to on.
  • the base station provided by the embodiment of the present invention sends the system information including the coverage enhancement status indication information and the coverage enhancement mode radio resource common information parameter to the terminal, so that the terminal learns the support situation of the cell coverage enhancement mode covered by the base station according to the system information, and It is known that when the cell supports the coverage enhancement mode, whether the current coverage enhancement status of the cell is on or off, avoiding the blind access of the terminal when the current coverage enhancement status of the cell is off, further reducing the power consumption of the terminal; And, when the coverage enhancement status of the cell changes, the second paging message is sent to the terminal by the sender, so that the terminal can re-acquire the new system information, and learn the coverage enhancement status of the changed cell according to the new system information. / or the system covers the enhanced mode radio resource common information parameters, enabling the terminal to better communicate with the base station.
  • the transmitter 10 in this embodiment indicates to the terminal that the cell coverage enhancement state is changed to the terminal by using the third paging message to enable the terminal to
  • the third paging message learns the process of the coverage enhancement state of the changed cell.
  • the foregoing system information includes coverage enhancement status indication information and coverage
  • the enhanced information of the radio resource common information if the current coverage enhancement status of the cell covered by the base station changes, the transmitter 10 is further configured to send a third paging message to the terminal; the third paging message carries the coverage enhanced state.
  • the indication information is used to enable the terminal to learn the coverage enhancement status of the cell covered by the changed base station according to the coverage enhancement status indication information in the third paging message.
  • the terminal obtains the SFN by detecting the PBCH, where the PBCH may be a normal PBCH.
  • PBCH transmitted according to the standard transmission mode may also be an enhanced PBCH (PBCH transmitted in an enhanced manner), and the base station and the terminal may pre-defined the transmission period according to the obtained SFN, that is, the foregoing transmission enhanced SIB Two cycles. If the terminal is an SFN obtained by detecting normal PBCH transmission, it is possible to know whether the cell supports the coverage enhancement mode by checking the coverage enhancement mode indication information included in SIB1.
  • the terminal When the terminal is configured to support the coverage enhancement according to the coverage enhancement indication information in the SIB or the enhanced SIB, the terminal may also learn that the current coverage enhancement status of the cell is enabled according to the coverage enhancement status indication information included in the system information sent by the transmitter 10. It is still closed, that is, the terminal can clearly know the current coverage enhancement status of the cell, so that when the current coverage enhancement status of the cell is closed, the terminal does not always try to access the cell, and the power consumption of the terminal is reduced.
  • the third paging message may not be periodically detected; when the operation is abnormal, that is, when the coverage enhancement state of the cell changes, the transmitter 10 sends a third paging message to the terminal.
  • the third paging message carries the coverage enhancement status indication information, so that the terminal can learn the coverage enhancement status of the changed cell according to the coverage enhancement status indication information in the third paging message, that is, the terminal does not need to re-acquire new
  • the system information is used to know the coverage enhancement status of the changed cell, and since the terminal detects the third paging message more easily than detecting the system information, the power consumption of the terminal is further saved.
  • the base station provided by the embodiment of the present invention sends the system information including the coverage enhancement status indication information and the coverage enhancement mode radio resource common information parameter to the terminal, so that the terminal learns the support situation of the cell coverage enhancement mode covered by the base station according to the system information, and It is known that when the cell supports the coverage enhancement mode, whether the current coverage enhancement status of the cell is on or off, avoiding the blind access of the terminal when the current coverage enhancement status of the cell is off, further reducing the power consumption of the terminal; And, when the coverage enhancement status of the cell changes, the third paging message is sent to the terminal by the sender, so that the terminal can re-recognize the coverage enhancement status of the changed cell according to the coverage enhancement status indication information in the third paging message. , enabling the terminal to be more Good communication with the base station and further saving power consumption of the terminal.
  • the embodiment relates to the quantity of resources used when the system information includes the coverage enhancement mode and the terminal attempts to access the base station.
  • the terminal learns the specific process of the current coverage enhancement state of the cell covered by the base station according to the system information.
  • the transmitter 10 sends system information to the terminal, where the system information includes the number of resources used in the coverage enhancement mode and the maximum number of access attempts by the terminal to access the cell covered by the base station, and the base station may also be configured.
  • the number of the resources in the enhanced mode is adjusted to adjust the number of the access coverage enhanced terminals in the network. For example, the density of the time-frequency resources of the Physical Random Access Channel (PRACH) can be adjusted.
  • the system information may be sent in at least one first period, or may be sent in at least one second period, and may also be selectively sent in at least one first period or a second period, where selective transmission refers to You can choose not to send during some first or second periods.
  • the terminal After the terminal is unable to successfully access the network through the PRACH, and the number of the maximum number of attempts to access the base station is reached, the terminal considers that the base station may not fully support the coverage enhancement mode, that is, the current coverage enhancement status of the cell covered by the base station is off. Therefore, the terminal can wait for a period of time and then try to access again, instead of reporting an error to the upper layer.
  • the base station provided by the embodiment of the present invention sends the system information to the terminal by using the transmitter, so that the terminal learns whether the cell covered by the base station supports the coverage enhancement mode according to the system information, and enables the terminal to pass the number of resources used in the coverage enhancement mode included in the system information. And the maximum number of access attempts by the terminal to access the cell covered by the base station to try to access the cell covered by the base station, and after the maximum number of access times is reached, the cell cannot be accessed, and the current coverage enhancement status of the cell is determined to be off. Therefore, the access is selected again after a period of time, and the terminal is blindly accessed when the current coverage enhancement status of the cell is turned off, thereby reducing the power consumption of the terminal.
  • a third embodiment of the present invention provides a base station, where the base station includes: a sending module 20, configured to send system information to a terminal, where the system information is used to indicate to the terminal whether a cell covered by the base station supports coverage enhancement;
  • the system information includes an MIB and/or an SIB.
  • the sending module 20 sends the system information to the terminal, and may send the system letter according to an ordinary sending manner specified in the standard, or according to an enhanced sending manner, according to different sending manners.
  • the resources used in the interest rate are different.
  • the system channel can be an MIB, an SIB, or an MIB and an SIB.
  • the SIB here can be one or multiple (SIB1, SIB2, SIB3, etc.).
  • the transmitting module 20 carries the MIB on the PBCH for transmission according to the manner in which the MIB is transmitted in the standard.
  • the PBCH is transmitted in a period of 40 ms, and is transmitted in four consecutive radio frames in four segments.
  • the MIB information carried by the PBCH is the same in one cycle; the PBCH segment in each radio frame is transmitted only in the first subframe. Moreover, only the first 4 OFDM symbols in the second time slot are occupied. Therefore, these OFDM symbols and the used subframes are the time-frequency resources used to transmit system information.
  • the MIB is sent to the terminal by the sending module 20 according to the enhanced sending mode, that is, the enhanced MIB is sent, where the enhanced MIB refers to the MIB copy sent on the additional resources predefined in the MIB sending period.
  • the embodiment of the present invention does not limit the resource mapping method used by the enhanced MIB.
  • the MIB enhanced transmission mode is transmitted in 4 consecutive radio frames in 4 ms, but in the first subframe of each radio frame, except for the first 4 slots of the second slot.
  • the OFDM symbol is used as a PBCH mapping, and the PBCH is repeatedly mapped using the last 3 OFDM symbols of the first slot and the 5th OFDM symbol of the second slot.
  • the last 3 OFDM symbols of the first time slot and the MIB transmitted on the 5th OFDM symbol of the second time slot are enhanced MIBs, and the last 3 OFDM symbols and the first time slot of the first time slot
  • the 5th OFDM symbol of the two slots is the additional resource predefined in the MIB transmission period.
  • the system information provided by the embodiment of the present invention may indicate to the terminal whether the cell covered by the base station supports the coverage enhancement, that is, the system information provided by the embodiment of the present invention is covered by the base station.
  • the coverage of the cell is enhanced to indicate the actual support situation to the terminal.
  • the system information may indicate the coverage enhancement of the cell to the terminal through the corresponding indication bit, and may also carry other indication information to indicate the coverage of the cell to the terminal.
  • the enhanced support situation the embodiment of the present invention does not limit the manner in which the system information indicates the coverage enhancement of the cell to the terminal.
  • the system information can enable the terminal to know the support of accurate cell coverage enhancement. When the terminal learns that the cell supports coverage enhanced mode communication, the terminal can access the cell and communicate with the base station through the coverage enhancement mode.
  • the embodiment of the invention prevents the base station from indicating its default support status to the terminal when the coverage enhancement mode is not supported. In this case, the terminal is blindly accessed, causing the terminal to consume too much power or always report to the upper layer.
  • the base station provided by the embodiment of the present invention sends a system for indicating whether the cell covered by the base station supports the enhanced coverage system information, so that the terminal can accurately know whether the cell supports the coverage enhanced mode communication, and does not support the coverage enhancement mode in the cell. The terminal is informed in time when communication, avoiding blind access of the terminal and saving power consumption of the terminal.
  • the embodiment relates to a process in which the sending module 20 sends system information to the terminal when the system information is the first system information.
  • the first system information may be ordinary system information, that is, system information transmitted in accordance with a transmission method specified by the standard (i.e., system information not transmitted on an additional resource).
  • the first system information includes coverage enhancement mode indication information, and the coverage enhancement mode indication information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement.
  • the sending module 20 is configured to send the first system information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal learns, according to the coverage enhancement mode indication information, whether the cell covered by the base station supports coverage. Enhanced.
  • the first period may be a period for transmitting system information, and may be a transmission period (40 ms) of the MIB, or may be a transmission period of the SIB.
  • the first time-frequency resource refers to a time-frequency resource for transmitting a normal MIB or an SIB according to a standard transmission mode, and may be, for example, a second time slot in a first subframe in a radio frame used for transmitting the MIB. And the first 4 OFDM symbols on the second time slot.
  • the sending module 20 sends the first system information in one or more first periods, and informs the coverage enhancement mode of the cell covered by the terminal base station by using the coverage enhancement mode indication information included in the first system information.
  • the coverage enhancement mode indication information may be an idle bit in the MIB or an indication bit in the SIB.
  • the coverage enhancement mode indication information may also be used.
  • SIBX Scheduling information of the SIBX; the SIBX is an information block for the coverage of the enhanced public radio resource. That is to say, the public radio resource configuration information about coverage enhancement is defined as SIBX (the SIBX may be one or several SIBs), and SIBX scheduling information is added in SIB1 (SIB1 includes SIB2, SIB3, SIBX, etc.) Block scheduling information), additional bits may not be needed at this time to indicate whether the cell coverage is enhanced, and the terminal judges by determining whether the SIB1 contains enhanced SIBX scheduling information. Whether the cell is in the coverage enhanced mode communication; if the domain is extended in the existing SIB, the terminal needs to demodulate to the specific SIB to obtain information about whether the cell supports coverage enhancement.
  • SIBX the public radio resource configuration information about coverage enhancement
  • SIBX scheduling information is added in SIB1 (SIB1 includes SIB2, SIB3, SIBX, etc.) Block scheduling information)
  • additional bits may not be needed at this time to indicate whether the cell coverage is enhanced
  • the SIB1 sent by the sending module 20 to the terminal carries the scheduling information of the SIBX, so that the terminal can know whether the cell supports the coverage enhancement mode by whether the SIB1 carries the scheduling information of the SIBX.
  • the SIB1 sent in the previous first period does not carry the scheduling information of the SIBX
  • the SIB1 sent in the next period or the next period carries the scheduling information of the SIBX
  • the SIBX is carried.
  • the time of the SIB1 of the scheduling information and the time of transmitting the SIB1 that does not carry the scheduling information of the SIBX are within a predetermined period of time, and the terminal may also consider that the cell supports the coverage enhancement mode.
  • the base station provided by the embodiment of the present invention sends the first system information including the coverage enhancement mode indication information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal can make the information according to the coverage enhancement mode indication information.
  • the terminal can accurately know whether the cell supports coverage enhanced mode communication, and timely informs the terminal when the cell does not support coverage enhanced mode communication, thereby avoiding blind access of the terminal and saving power consumption of the terminal.
  • the embodiment relates to a process in which the sending module 20 sends system information to the terminal when the system information is the second system information.
  • the second system information may be system information transmitted according to the enhanced transmission mode, that is, a copy of the common system information sent on an additional resource in a period in which the system information is transmitted.
  • the second system information may be enhanced.
  • the sending module 20 is configured to send the second system information to the terminal in the second time-frequency resource in the at least one second period, so that the terminal learns the coverage of the base station according to the second system information. Cell support coverage enhancement.
  • the second period may be the same as the first period, and the number of the second period may be the same as the number of the first period, or may be different.
  • the second period may be a period for transmitting enhanced system information, may be a period for transmitting an enhanced MIB (40 ms), or may be a period for transmitting an enhanced SIB.
  • the enhanced system information herein may be a copy of the first system information transmitted on additional time-frequency resources within a period in which the first system information is transmitted.
  • the enhanced MIB may be the MIB transmitted in the last 3 OFDM symbols of the first slot and the 5th OFDM symbol of the second slot in the above embodiment.
  • the second time-frequency resource in the second period can actually be the first The last 3 OFDM symbols of one slot and the 5th OFDM symbol of the second slot.
  • the second time-frequency resource used by the sending module 20 when transmitting the second system information has a corresponding resource mapping on the terminal side, that is, which resources are used by the sending module 20 as the second time-frequency resource to send the second system information terminal. It is ok to know. Therefore, as long as the sending module 20 sends the second system information to the terminal, the terminal can learn that the system information is enhanced system information according to the resource mapping on the terminal side, indicating that the cell covered by the base station supports coverage enhancement.
  • the time interval in which the sending module 20 sends the second system information twice in a row is not greater than the first preset time period.
  • the transmitting module 20 sends one or more second periods used by the second system information.
  • the sending module 20 does not send the second system information in every second period (the second period of sending the second system information) It may be negotiated by the base station and the terminal, or may be determined by the base station itself. It may send a second system information at time T1, and then send the second system information again at time T2. From time T2, the next base station transmits the next system information.
  • the interval of the second system information is not greater than the first preset time period, and the first preset time period may be explicitly specified in the protocol, such as the time of 10 radio frames, or the time of 10 PBCH cycles.
  • the base station provided by the embodiment of the present invention sends the second system information to the terminal on the second time-frequency resource of the at least one second period, so that the terminal can accurately know whether the cell supports the coverage enhanced mode communication according to the second system information. And timely notifying the terminal when the cell does not support coverage enhanced mode communication, avoiding blind access of the terminal, and saving power consumption of the terminal.
  • FIG. 2 is a schematic structural diagram of Embodiment 4 of a base station according to the present invention.
  • the second system information involved in this embodiment is an enhanced SIB.
  • the base station further includes: a negotiation module 21, configured to send the second system in consultation with the terminal before the sending module 20 sends the second system information to the terminal At least one second period of information.
  • the negotiation module 21 and the terminal negotiate the sending module 20 to send the second period of the enhanced SIB, that is, in which second periods, the enhanced SIB is negotiated, and in which second periods, the enhanced SIB is not sent.
  • the transmitting module 20 transmits the enhanced SIB on the second time-frequency resource in the second period.
  • the enhanced SIB may be a normal SIB that is repeatedly transmitted on the second time-frequency resource, and the content of the SIB that is repeatedly sent on the second time-frequency resource in each second period is the same.
  • the enhanced SIB may also refer to an SIB carrying SIBX scheduling information that is sent only in the determined second period of transmitting the enhanced SIB, but the SIB transmitted in the other second period does not include the SIBX. Scheduling information.
  • the base station provided by the embodiment of the present invention sends a second period of the enhanced SIB by using the negotiation module, and sends the enhanced SIB to the terminal by the sending module on the second time-frequency resource in the second period of the negotiation.
  • the enhanced SIB can accurately know whether the cell supports the coverage enhanced mode communication, and notify the terminal in time when the cell does not support the coverage enhanced mode communication, thereby avoiding blind access of the terminal and saving power consumption of the terminal.
  • the system information sent by the sending module to the terminal indicates whether the cell covered by the base station supports coverage enhancement.
  • the cell covered by the base station is often supported to support coverage enhancement, but in a certain At the same time, the coverage enhancement status of the cell is closed, which may easily cause the terminal to try to access when the cell coverage coverage supported by the base station is enhanced, so that the power consumption of the terminal is increased. Therefore, in order to avoid this, the following embodiment further indicates to the terminal whether the current coverage enhancement status of the cell is on or off in the case where the cell supports coverage enhancement.
  • the following embodiment takes the system information as the SIB as an example.
  • the sending module 20 in this embodiment indicates the process of indicating the current coverage enhancement status of the cell to the terminal by sending the first paging message to the terminal.
  • the sending module 20 is further configured to send the first paging message to the terminal, where the first paging message includes coverage enhancement status indication information, and is used to indicate to the terminal, the cell covered by the base station. Current coverage enhancement status.
  • the terminal obtains the SFN by detecting the PBCH, where the PBCH may be a normal PBCH (PBCH transmitted according to a standard specified transmission manner), or may be an enhanced PBCH (PBCH transmitted according to an enhanced manner), and the base station and the terminal may be configured according to
  • the terminal may also obtain the current coverage enhancement status of the cell by using the first paging message that is sent by the sending module 20 and carrying the coverage enhancement status indication information. Whether the terminal is open or closed, that is, the terminal can clearly know the current coverage enhancement status of the cell, so that when the current coverage enhancement status of the cell is closed, the terminal does not always try to access the cell, and the power consumption of the terminal is reduced.
  • the base station provided by the embodiment of the present invention sends the system information to the terminal by using the sending module, so that the terminal obtains the support of the cell coverage enhancement mode covered by the base station according to the system information; and sends the coverage enhancement status indication information to the terminal by the sending module.
  • a paging message is used to enable the terminal to learn the current coverage enhancement status of the cell according to the coverage enhancement indication information, and avoid blind access of the terminal when the current coverage enhancement status of the cell is closed, thereby further reducing power consumption of the terminal.
  • the sending module 20 in this embodiment indicates to the terminal that the cell coverage enhancement state change and/or coverage is provided to the terminal by using the second paging message to the terminal.
  • the sending module 20 is further configured to send a second paging message to the terminal, where The second paging message is used to indicate to the terminal that the current coverage enhancement state of the cell covered by the base station changes and/or the system coverage enhancement mode radio resource common information parameter changes, so that the terminal reacquires new system information, and The coverage enhancement status and/or the system coverage enhancement mode radio resource common information parameter of the changed cell are obtained according to the new system information.
  • the terminal obtains the SFN by detecting the PBCH, where the PBCH may be a normal PBCH (PBCH sent according to a standard specified transmission manner), or may be an enhanced PBCH (PBCH transmitted according to an enhanced manner), and the base station and the terminal may be configured according to The obtained SFN pre-defined enhanced transmission period, that is, the second period of transmitting the enhanced SIB described above. If the terminal is an SFN obtained by detecting normal PBCH transmission, it is possible to know whether the cell supports the coverage enhancement mode by checking the coverage enhancement mode indication information included in SIB1.
  • the terminal can also learn that the current coverage enhancement status of the cell is enabled according to the coverage enhancement status indication information included in the system information sent by the sending module 20, according to the coverage enhancement indication information in the SIB or the enhanced SIB. Still closed, ie The terminal can clearly know the current coverage enhancement status of the cell, so that when the current coverage enhancement status of the cell is off, the terminal does not always try to access the cell, and the power consumption of the terminal is reduced.
  • the transmitting module 20 sends an enhanced SIB, so that the terminal knows that the cell supports the coverage enhancement mode
  • the manner of transmitting the enhanced SIB may be various, which are:
  • the second type when the sending module 20 sends the enhanced SIB on the predefined time-frequency resource location, when the state indicated by the coverage enhanced state indication information in the SIB1 is off, the SIB1 includes the public information of the wireless resource in the coverage enhanced mode.
  • the SIBX may not be scheduled, that is, the SIB1 may not carry the coverage enhancement mode indication information.
  • the third type may include the scheduling information of the SIBX in the extended domain of the SIB, or may not include the scheduling information of the SIBX, or the coverage enhancement status of the cell indicated by the coverage enhancement status indication information in the SIB1 or the radio resource in the enhanced mode.
  • the public information parameter has changed, and the second paging message may be sent to the normal UE without sending a second paging message.
  • the radio resource common information parameter changes in the coverage enhancement state or the enhanced mode of the cell, it is necessary to send a second paging message to notify the change that the coverage enhanced terminal is required.
  • the second paging message may indicate to the terminal that the current coverage enhancement status of the cell covered by the base station changes and/or the system coverage enhanced mode radio resource common information parameter changes, so that the terminal may reacquire new system information, and according to the new The coverage enhancement status in the system information and the radio resource common information parameter in the enhanced mode learn the coverage enhancement status of the changed cell and/or the radio resource common information parameter in the enhanced mode.
  • the fourth type If the number of time-frequency resources predefined by the base station and the terminal is large, in order to improve resource efficiency, the sending module 20 does not necessarily send an enhancement on each predefined time-frequency resource. SIB. As long as the terminal does not detect it, you can try to try again at the next predefined time-frequency resource location. And, when the terminal learns that the current coverage enhancement status of the cell is on, according to the coverage enhancement status indication information, the terminal considers that the current cell has been working in the coverage enhancement mode, and may initiate communication with the base station according to the configuration of the radio resource in the enhanced mode in the SIB. When the status of the CEM detected by the terminal is off, the UE determines, according to actual needs, when to detect whether the coverage enhancement status of the cell indicated by the coverage enhancement status indication information in the SIB turns to on.
  • the base station provided by the embodiment of the present invention sends the system information including the coverage enhancement status indication information and the coverage enhancement mode radio resource common information parameter to the terminal, so that the terminal learns the support situation of the cell coverage enhancement mode covered by the base station according to the system information, and It is known that when the cell supports the coverage enhancement mode, whether the current coverage enhancement status of the cell is on or off, avoiding the blind access of the terminal when the current coverage enhancement status of the cell is off, further reducing the power consumption of the terminal; And, when the coverage enhancement status of the cell changes, the sending, by the sending module, the second paging message is sent to the terminal, so that the terminal can re-acquire the new system information, and learn the coverage enhancement status of the changed cell according to the new system information. / or the system covers the enhanced mode radio resource common information parameters, so that the terminal can better communicate with the base station.
  • the sending module 20 in this embodiment indicates to the terminal that the cell coverage enhancement state is changed to the terminal by using the third paging message to enable the terminal to
  • the third paging message learns the process of the coverage enhancement state of the changed cell.
  • the foregoing system information includes a coverage enhancement state indication information and a coverage enhancement mode radio resource common information parameter, and if the current coverage enhancement state of the cell covered by the base station changes, the sending module 20 is further configured to send the third homing to the terminal.
  • the third paging message carries the coverage enhancement status indication information, so that the terminal learns the coverage enhancement status of the cell covered by the changed base station according to the coverage enhancement status indication information in the third paging message.
  • the terminal obtains the SFN by detecting the PBCH, where the PBCH may be a normal PBCH (PBCH sent according to a standard specified transmission manner), or may be an enhanced PBCH (PBCH transmitted according to an enhanced manner), and the base station and the terminal may be configured according to The obtained SFN pre-defined enhanced transmission period, that is, the second period of transmitting the enhanced SIB described above. If the terminal is an SFN obtained by detecting normal PBCH transmission, it is possible to know whether the cell supports the coverage enhancement mode by checking the coverage enhancement mode indication information included in SIB1.
  • the terminal may further know whether the current coverage enhancement status of the cell is on or off according to the coverage enhancement status indication information included in the system information sent by the sending module 20, that is, the terminal may explicitly know the current coverage enhancement status of the cell, When the terminal is in the state that the current coverage enhancement status of the cell is off, the terminal does not always try to access the cell, which reduces the power consumption of the terminal.
  • the third paging message may not be periodically detected.
  • the sending module 20 sends a third paging message to the terminal.
  • the third paging message carries the coverage enhancement status indication information, so that the terminal can learn the coverage enhancement status of the changed cell according to the coverage enhancement status indication information in the third paging message, that is, the terminal does not need to re-acquire new
  • the system information is used to know the coverage enhancement status of the changed cell, and since the terminal detects the third paging message more easily than detecting the system information, the power consumption of the terminal is further saved.
  • the base station provided by the embodiment of the present invention sends the system information including the coverage enhancement status indication information and the coverage enhancement mode radio resource common information parameter to the terminal, so that the terminal learns the support situation of the cell coverage enhancement mode covered by the base station according to the system information, and It is known that when the cell supports the coverage enhancement mode, whether the current coverage enhancement status of the cell is on or off, avoiding the blind access of the terminal when the current coverage enhancement status of the cell is off, further reducing the power consumption of the terminal; And, when the coverage enhancement status of the cell changes, the sending, by the sending module, the third paging message is sent to the terminal, so that the terminal can re-recognize the coverage enhancement status of the changed cell according to the coverage enhancement status indication information in the third paging message. , enabling the terminal to better communicate with the base station and further saving power consumption of the terminal.
  • the embodiment relates to the quantity of resources used when the system information includes the coverage enhancement mode and the terminal attempts to access the base station.
  • the terminal learns the specific process of the current coverage enhancement state of the cell covered by the base station according to the system information.
  • the sending module 20 sends system information to the terminal, where the system information includes the number of resources used in the coverage enhancement mode and the maximum number of access attempts by the terminal to access the cell covered by the base station, and the base station may also be configured.
  • the number of resources in the enhanced mode is adjusted to adjust the number of terminals with enhanced access coverage in the network. For example, the density of the time-frequency resources of the PRACH can be adjusted.
  • the system information may be sent in at least one first period, or may be sent in at least one second period, and may also be selectively sent in at least one first period or a second period, where the selectivity is Sending means that you can choose not to send during some first or second periods.
  • the terminal When the terminal is unable to access the network through the PRACH, and the maximum number of attempts to access the AP is reached, the terminal considers that the base station cannot fully support the coverage enhancement mode, that is, the current coverage enhancement status of the cell covered by the base station is off. Therefore, the terminal can wait for a period of time and then try to access again, instead of reporting an error to the upper layer.
  • the base station provided by the embodiment of the present invention sends the system information to the terminal by using the sending module, so that the terminal learns whether the cell covered by the base station supports the coverage enhancement mode according to the system information, and enables the terminal to pass the number of resources used in the coverage enhancement mode included in the system information. And attempting to access the cell covered by the base station by using the maximum number of access attempts by the terminal to access the cell covered by the base station, and failing to access the cell after reaching the maximum access times, determining that the current coverage enhancement status of the cell is off. Therefore, the access is selected again after a period of time, and the terminal is blindly accessed when the current coverage enhancement status of the cell is turned off, thereby reducing the power consumption of the terminal.
  • Embodiment 1 of the present invention provides a method for indicating a cell coverage enhancement mode.
  • the execution subject of the method may be the base station in the above embodiment.
  • the method includes:
  • the base station sends system information to the terminal, where the system information is used to indicate to the terminal whether the cell covered by the base station supports coverage enhancement.
  • the system information includes a primary system information block MIB and/or a system information block SIB.
  • the embodiment of the method for indicating the cell coverage enhancement mode provided by the present invention may be referred to the implementation process of the foregoing embodiment of the base station, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the coverage enhancement mode indication information is used to indicate to the terminal whether the cell covered by the base station is Supporting the coverage enhancement; the foregoing S101 is specifically: the base station sends the first system information to the terminal on the first time-frequency resource of the at least one first period, so that the terminal indicates according to the coverage enhancement mode.
  • the information knows whether the cell covered by the base station supports coverage enhancement.
  • the coverage enhancement mode indication information is an indication bit of the SIB or scheduling information of the SIBX, where the SIBX is an enhanced enhanced public radio resource configuration information block.
  • An embodiment of the method for indicating a cell coverage enhancement mode provided by the present invention may refer to the foregoing base station.
  • the implementation process of the embodiment is similar to the technical effect, and details are not described herein again.
  • the foregoing S101 may be: the second time-frequency resource of the base station in the at least one second period sends the second system information to the terminal, so that The terminal learns, according to the second system information, a cell support coverage enhancement covered by the base station.
  • FIG. 3 is a flowchart of Embodiment 2 of a method for indicating a cell coverage enhancement mode according to the present invention. The method includes:
  • the base station negotiates with the terminal to send at least one second period of the second system information.
  • the second time-frequency resource of the base station in the at least one second period sends the second system information to the terminal, so that the terminal learns, according to the second system information, the cell support coverage enhancement covered by the base station.
  • the embodiment of the method for indicating the cell coverage enhancement mode provided by the present invention may be referred to the implementation process of the foregoing embodiment of the base station, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the method may further include: the base station sending a first paging message to the terminal, where the first paging message includes coverage enhancement status indication information, And indicating to the terminal, a current coverage enhancement status of a cell covered by the base station.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode radio resource common information parameter, if a current coverage enhancement status of a cell covered by the base station changes and/or And the method further includes: the base station sending a second paging message to the terminal, where the second paging message is used to send the The terminal indicates that the current coverage enhancement status of the cell covered by the base station changes and/or the system coverage enhanced mode radio resource common information parameter changes, so that the terminal reacquires new system information, and according to the new The system information is obtained by the coverage enhancement status of the cell covered by the changed base station and/or the system coverage enhanced mode radio resource common information parameter.
  • the system information includes coverage enhancement status indication information and coverage enhancement mode radio resource common information parameter, and if a current coverage enhancement status of a cell covered by the base station changes, The method may further include: the base station sending a third paging message to the terminal; the third paging message carrying the coverage enhancement status indication information, so that the terminal is configured according to the third paging message.
  • the coverage enhancement status indication information learns the coverage enhancement status of the cell covered by the changed base station.
  • the system information includes a quantity of resources used by the coverage enhancement mode and a maximum access times of the cell that the terminal attempts to access the coverage of the base station, so that the terminal is used. And determining, according to whether the number of times the accessing the cell covered by the base station reaches the maximum access times, determining a current coverage enhancement state of the cell covered by the base station.
  • the embodiment of the method for indicating the cell coverage enhancement mode provided by the present invention may be referred to the implementation process of the foregoing embodiment of the base station, and the implementation principle and technical effects thereof are similar, and details are not described herein again.
  • the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明提供一种小区覆盖增强模式的指示方法和基站。该基站包括:发送器,用于向终端发送系统信息,所述系统信息用于向所述终端指示所述基站覆盖的小区是否支持覆盖增强;其中,所述系统信息包括主系统信息块MIB和/或系统信息块SIB。本发明实施例提供的基站,通过发送器向终端发送用于指示基站覆盖的小区是否支持覆盖增强的系统信息,使得终端可以准确获知小区是否支持覆盖增强模式通信,并在小区不支持覆盖增强模式通信时及时告知终端,避免了终端的盲目接入,节省了终端的功耗。

Description

小区覆盖增强模式的指示方法和基站
技术领域
本发明涉及通信技术, 尤其涉及一种小区覆盖增强模式的指示方法和基 站。 背景技术
小区 (或基站) 的实际覆盖范围由多方面的因素决定, 包括载波的频率, 终端的接收机性能等。 在进行小区规划时, 一方面会考虑载波的频率, 另一 方面也会结合信道环境以及终端的接收机性能来部署网络。 例如, 一个已经 建成的网络或者准备规划建设的网络下, 多数的终端 (User Equipment , 以 下简称 UE ) 的大尺度衰落特性近似, 那么在小区的覆盖范围内, 这些多数的 终端都能被服务到。 但是, 如果有少数终端也在小区的覆盖范围的距离内, 但是衰落特性却和多数终端差别较大, 导致信号到达这些终端时的接收功率 特别小 (例如: 在接收机的灵敏度之下) , 这些终端将无法实现通信。 例如, 位于地下室的终端, 与位于地上的终端相比, 接收信号的能量或功率要小 10 到 20个 dB。
为了使恶劣环境下的终端也能被现有小区覆盖并服务, 需要对处于恶劣 环境下的终端接收的物理信道上的信息进行增强发送。 增强发送的方法针对 不同的物理信道可能稍有不同, 但基本的增强方法是: 对物理信道上的信息 在预定义的资源位置上重复发送,使得对端接收机能合并接收多个发送副本, 从而提高接收性能。 这里的预定义的资源位置是指在发送正常的物理信道信 息时所使用的资源之外的预定义的额外资源。由于处于恶劣环境下的 UE的数 量相对较少, 当网络状态处于繁忙时, 网络有权选择不服务这些处于恶劣环 境的 UE, 即选择关闭覆盖增强模式, 才能保证频谱的有效利用, 并保证高优 先级的普通 UE优先得到服务。
现有技术中, 为了能够使 UE获知当前小区的覆盖增强的支持与否, 通过 基站判断是否达到预先设置的启动增强方案的条件; 若是, 则基站根据预先 约定的增强方案所使用的资源和终端进行通信; 或者, 则基站通过动态配置 的方式和终端协商增强方案所使用的资源, 根据增强方案所使用的资源和终 端进行通信。
但是, 现有技术基站默认网络当前是支持覆盖增强模式的, 因此无法向
UE指示实际的覆盖增强模式的支持情况。 发明内容
本发明实施例提供了一种小区覆盖增强模式的指示方法和基站, 用以解 决现有技术中基站无法向 UE 准确指示实际的覆盖增强模式的支持情况的技 术问题。
第一方面, 本发明实施例提供一种基站, 包括:
发送器, 用于向终端发送系统信息, 所述系统信息用于向所述终端指示 所述基站覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统信 息块 MIB和 /或系统信息块 SIB。
结合第一方面, 在第一方面的第一种可能的实施方式中, 所述系统信 息为第一系统信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述 覆盖增强模式指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆 盖增强; 则所述发送器, 具体用于在至少一个第一周期的第一时频资源上向 所述终端发送所述第一系统信息, 以使所述终端根据所述覆盖增强模式指示 信息获知所述基站覆盖的小区是否支持覆盖增强。
结合第一方面的第一种可能的实施方式, 在第一方面的第二种可能的 实施方式中, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为 所述 SIB中的指示比特或 SIBX的调度信息; 其中, 所述 SIBX为覆盖增强的 公共无线资源配置信息块。
结合第一方面, 在第一方面的第三种可能的实施方式中, 所述系统信 息为第二系统信息, 则所述发送器, 具体用于在至少一个第二周期内的第二 时频资源向所述终端发送第二系统信息, 以使所述终端根据所述第二系统信 息获知所述基站覆盖的小区支持覆盖增强。
结合第一方面的第三种可能的实施方式, 在第一方面的第四种可能的 实施方式中, 所述发送器连续两次发送所述第二系统信息的时间间隔不大于 第一预设时间段。 结合第一方面的第四种可能的实施方式, 在第一方面的第五种可能的 实施方式中, 所述基站还包括:
处理器, 用于在所述发送器向所述终端发送第二系统信息之前, 与所述 终端协商发送所述第二系统信息的至少一个第二周期。
结合第一方面至第一方面的第五种可能的实施方式中的任一项, 在第 一方面的第六种可能的实施方式中,所述发送器,还用于向所述终端发送第 一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强状态指示信息, 用于向 所述终端指示所述基站覆盖的小区当前的覆盖增强状态。
结合第一方面至第一方面的第五种可能的实施方式中的任一项, 在第 一方面的第七种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共信息参数发 生变化, 则所述发送器, 还用于向所述终端发送第二寻呼消息; 其中, 所述 第二寻呼消息用于向所述终端指示所述基站覆盖的小区当前的覆盖增强状态 发生变化和 /或所述系统覆盖增强模式无线资源公共信息参数发生变化, 以使 所述终端重新获取新的系统信息, 并根据所述新的系统信息获知变化后的所 述基站覆盖的小区的覆盖增强状态和 /或所述系统覆盖增强模式无线资源公 共信息参数。
结合第一方面至第一方面的第五种可能的实施方式中的任一项, 在第 一方面的第八种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化, 则所述发送器, 还用于向所述终端发送第三寻呼消息; 所述第三寻呼消息携带所述覆盖增强状态指示信息, 以使所述终端根据所述 第三寻呼消息中的覆盖增强状态指示信息获知变化后的所述基站覆盖的小区 的覆盖增强状态。
结合第一方面, 在第一方面的第九种可能的实施方式中, 所述系统信 息包括覆盖增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的 小区的最大接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次 数是否达到所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状 态。 第二方面, 本发明实施例提供一种基站, 包括:
发送模块, 用于向终端发送系统信息, 所述系统信息用于向所述终端指 示所述基站覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统 信息块 MIB和 /或系统信息块 SIB。
结合第二方面, 在第二方面的第一种可能的实施方式中, 所述系统信 息为第一系统信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述 覆盖增强模式指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆 盖增强; 则所述发送模块, 具体用于在至少一个第一周期的第一时频资源上 向所述终端发送所述第一系统信息, 以使所述终端根据所述覆盖增强模式指 示信息获知所述基站覆盖的小区是否支持覆盖增强。
结合第二方面的第一种可能的实施方式, 在第二方面的第二种可能的 实施方式中, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为 所述 SIB中的指示比特或 SIBX的调度信息; 其中, 所述 SIBX为覆盖增强的 公共无线资源配置信息块。
结合第二方面, 在第二方面的第三种可能的实施方式中, 所述系统信 息为第二系统信息, 则所述发送模块, 具体用于在至少一个第二周期内的第 二时频资源向所述终端发送第二系统信息, 以使所述终端根据所述第二系统 信息获知所述基站覆盖的小区支持覆盖增强。
结合第二方面的第三种可能的实施方式, 在第二方面的第四种可能的 实施方式中, 所述发送模块连续两次发送所述第二系统信息的时间间隔不大 于第一预设时间段。
结合第二方面的第四种可能的实施方式, 在第二方面的第五种可能的 实施方式中, 所述基站还包括:
协商模块, 用于在所述发送模块向所述终端发送第二系统信息之前, 与 所述终端协商发送所述第二系统信息的至少一个第二周期。
结合第二方面至第二方面的第五种可能的实施方式中的任一项, 在第 二方面的第六种可能的实施方式中,所述发送模块,还用于向所述终端发送 第一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强状态指示信息, 用于 向所述终端指示所述基站覆盖的小区当前的覆盖增强状态。
结合第二方面至第二方面的第五种可能的实施方式中的任一项, 在第 二方面的第七种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共信息参数发 生变化, 则所述发送模块, 还用于向所述终端发送第二寻呼消息; 其中, 所 述第二寻呼消息用于向所述终端指示所述基站覆盖的小区当前的覆盖增强状 态发生变化和 /或所述系统覆盖增强模式无线资源公共信息参数发生变化, 以 使所述终端重新获取新的系统信息, 并根据所述新的系统信息获知变化后的 所述基站覆盖的小区的覆盖增强状态和 /或所述系统覆盖增强模式无线资源 公共信息参数。
结合第二方面至第二方面的第五种可能的实施方式中的任一项, 在第 二方面的第八种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化, 则所述发送模块, 还用于向所述终端发送第三寻呼消 息; 所述第三寻呼消息携带所述覆盖增强状态指示信息, 以使所述终端根据 所述第三寻呼消息中的覆盖增强状态指示信息获知变化后的所述基站覆盖的 小区的覆盖增强状态。
结合第二方面, 在第二方面的第九种可能的实施方式中, 所述系统信 息包括覆盖增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的 小区的最大接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次 数是否达到所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状 态。
第三方面, 本发明实施例提供一种小区覆盖增强模式的指示方法, 包 括:
基站向终端发送系统信息, 所述系统信息用于向所述终端指示所述基站 覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统信息块 MIB 和 /或系统信息块 SIB。
结合第三方面, 在第三方面的第一种可能的实施方式中, 所述系统信 息为第一系统信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述 覆盖增强模式指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆 盖增强; 则所述基站向终端发送系统信息, 包括: 所述基站在至少一个第一周期的第一时频资源上向所述终端发送所述第 一系统信息, 以使所述终端根据所述覆盖增强模式指示信息获知所述基站覆 盖的小区是否支持覆盖增强。
结合第三方面的第一种可能的实施方式, 在第三方面的第二种可能的 实施方式中, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为 所述 SIB中的指示比特或 SIBX的调度信息; 其中, 所述 SIBX为覆盖增强的 公共无线资源配置信息块。
结合第三方面, 在第三方面的第三种可能的实施方式中, 所述系统信 息为第二系统信息, 则所述基站向终端发送系统信息, 包括:
所述基站在至少一个第二周期内的第二时频资源向所述终端发送第二系 统信息, 以使所述终端根据所述第二系统信息获知所述基站覆盖的小区支持 覆盖增强。
结合第三方面的第三种可能的实施方式, 在第三方面的第四种可能的 实施方式中, 所述基站在至少一个第二周期内的第二时频资源向所述终端发 送第二系统信息, 具体包括:
所述基站连续两次发送所述第二系统信息的时间间隔不大于第一预设时 间段。
结合第三方面的第四种可能的实施方式, 在第三方面的第五种可能的 实施方式中, 所述基站在至少一个第二周期内的第二时频资源向所述终端发 送第二系统信息之前, 还包括:
所述基站与所述终端协商发送所述第二系统信息的至少一个第二周期。 结合第三方面至第三方面的第五种可能的实施方式中的任一项, 在第 三方面的第六种可能的实施方式中, 所述方法还包括:
所述基站向所述终端发送第一寻呼消息; 其中, 所述第一寻呼消息包括 覆盖增强状态指示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆 盖增强状态。
结合第三方面至第三方面的第五种可能的实施方式中的任一项, 在第 三方面的第七种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共信息参数发 生变化, 则所述方法还包括:
所述基站向所述终端发送第二寻呼消息; 其中, 所述第二寻呼消息用于 向所述终端指示所述基站覆盖的小区当前的覆盖增强状态发生变化和 /或所 述系统覆盖增强模式无线资源公共信息参数发生变化, 以使所述终端重新获 取新的系统信息, 并根据所述新的系统信息获知变化后的所述基站覆盖的小 区的覆盖增强状态和 /或所述系统覆盖增强模式无线资源公共信息参数。
结合第三方面至第三方面的第五种可能的实施方式中的任一项, 在第 三方面的第八种可能的实施方式中,所述系统信息包括覆盖增强状态指示信 息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当前的覆 盖增强状态发生变化, 则所述方法还包括:
所述基站向所述终端发送第三寻呼消息; 所述第三寻呼消息携带所述覆 盖增强状态指示信息, 以使所述终端根据所述第三寻呼消息中的覆盖增强状 态指示信息获知变化后的所述基站覆盖的小区的覆盖增强状态。
结合第三方面, 在第三方面的第九种可能的实施方式中, 所述系统信 息包括覆盖增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的 小区的最大接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次 数是否达到所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状 态。
本发明实施例提供的小区覆盖增强模式的指示方法和基站, 通过发送 器向终端发送用于指示基站覆盖的小区是否支持覆盖增强的系统信息, 使得 终端可以准确获知小区是否支持覆盖增强模式通信, 并在小区不支持覆盖增 强模式通信时及时告知终端, 避免了终端的盲目接入, 节省了终端的功耗。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对 实施例或现有技术描述中所需要使用的附图作一简单地介绍, 显而易见 地, 下面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员 来讲, 在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附 图。
图 1为本发明提供的基站实施例二的结构示意图; 图 2为本发明提供的基站实施例四的结构示意图;
图 3为本发明提供的小区覆盖增强模式的指示方法实施例二的流程图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本 发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描 述, 显然,所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提 下所获得的所有其他实施例, 都属于本发明保护的范围。
本申请中涉及的终端, 即用户设备, 可以是无线终端也可以是有线终 端。 该终端可以是处于恶劣环境下需要通过覆盖增强模式通信的终端。 无 线终端可以是指向用户提供语音和 /或数据连通性的设备, 具有无线连接 功能的手持式设备、 或连接到无线调制解调器的其他处理设备。 无线终端 可以经无线接入网 (例如, RAN, Radio Access Network ) 与一个或多个 核心网进行通信, 无线终端可以是移动终端, 如移动电话(或称为 "蜂窝" 电话)和具有移动终端的计算机, 例如, 可以是便携式、 袖珍式、 手持式、 计算机内置的或者车载的移动装置, 它们与无线接入网交换语言和 /或数 据。 例如, 个人通信业务 (PCS , Personal Communication Service ) 电 话、 无绳电话、会话发起协议(SIP )话机、 无线本地环路(WLL, Wireless Local Loop ) 站、 个人数字助理 (PDA , Personal Digital Assi stant ) 等设备。 无线终端也可以称为系统、 订户单元 (Subscriber Unit ) 、 订 户站(Subscriber Stat ion ),移动站(Mobi le Station )、移动台(Mobi le )、 远程站 ( Remote Station ) 、 接入点 (Access Point ) 、 远程终端 ( Remote Terminal )、接入终端 (Access Terminal )、用户终端 ( User Terminal )、 用户代理 (User Agent ) 、 用户设备 (User Device ) 、 或用户装备 (User Equipment ) 。
本申请中涉及的基站(例如:接入点),可以是 WLAN的接入点(Access Point ) , 还可以是指接入网中在空中接口上通过一个或多个扇区与无线 终端通信的设备。 基站可用于将收到的空中帧与 IP分组进行相互转换, 作为无线终端与接入网的其余部分之间的路由器, 其中接入网的其余部分 可包括网际协议(IP) 网络。基站还可协调对空中接口的属性管理。例如, 基站可以是 GSM或 CDMA中的基站 (BTS, Base Transceiver Station ) , 也可以是 WCDMA中的基站(NodeB ),还可以是 LTE中的演进型基站(NodeB 或 eNB或 e- NodeB, evolutional Node B ) , 本申请并不限定。
本发明实施例一提供了一种基站, 该基站包括: 发送器 10, 用于向终 端发送系统信息, 所述系统信息用于向所述终端指示所述基站覆盖的小区是 否支持覆盖增强; 其中, 所述系统信息包括主系统信息块 (Master Information Block, 以下简称 MIB) 和 /或系统信息块 (System Information Block, 以下简称 SIB) 。
具体的, 发送器 10发送系统信息给终端, 可以按照标准中规定的普通的 发送方式, 也可以按照增强的发送方式, 按照不同的发送方式发送系统信息 时所使用的资源是不同的。 该系统信道可以是 MIB, 也可以是 SIB, 还可以是 MIB和 SIB。这里的 SIB可以是一个, 也可以是多个(SIB1、 SIB2、 SIB3等)。
假设系统信息是单纯的 MIB, 按照标准中规定的 MIB的发送方式, 发送 器 10将 MIB承载在物理广播信道 (Physical Broadcast Channel , 以下简称 PBCH) 上进行传输。 PBCH以 40ms为周期发送, 并分成 4段在 4个连续的无 线帧内发送, 在一个周期里 PBCH承载的 MIB信息相同; 每个无线帧内 PBCH 分段仅在第一个子帧内发送,而且仅占用了第二个时隙里的前 4个 0FDM符号。 因此这些 0FDM 符号以及所使用的子帧即就是发送系统信息所使用的时频资 源。
若 MIB是按照增强的发送方式由发送器 10发送给终端, 即发送的是 增强的 MIB, 这里增强的 MIB是指在 MIB发送周期里预定义的额外资源上 发送的 MIB副本。 增强的 MIB的资源映射方式可以有很多种, 本发明实施 例不限定增强的 MIB使用的资源映射方法。 例如, MIB增强的发送方式以 40ms为周期, 分为 4段在 4个连续的无线帧内发送, 但是在每个无线帧的 第一个子帧内, 除第二个时隙的前 4个 0FDM符号用作 PBCH映射外, 额外 使用第一个时隙的最后 3个 0FDM符号以及第二个时隙的第 5个 0FDM符号 重复映射 PBCH—次。 也就是说, 第一个时隙的最后 3个 0FDM符号和第二 个时隙的第 5个 0FDM符号上发送的 MIB就是增强的 MIB,且第一个时隙的 最后 3个 0FDM符号和第二个时隙的第 5个 0FDM符号就是 MIB发送周期里 预定义的额外的资源。
但是, 无论系统信息是上述哪一种方式发送, 本发明实施例提供的系 统信息均可以向终端指示基站所覆盖的小区是否支持覆盖增强, 即本发明 实施例提供的系统信息是根据基站所覆盖的小区的覆盖增强实际的支持 情况向终端指示的, 该系统信息可以通过相应的指示比特来向终端指示小 区的覆盖增强的支持情况, 还可以是携带其他的指示信息来向终端指示小 区的覆盖增强的支持情况, 本发明实施例对系统信息以何种方式向终端指 示小区的覆盖增强的支持情况并不做限制。 该系统信息可以使得终端获知 准确的小区覆盖增强的支持情况。 当终端获知小区支持覆盖增强模式通 信, 则终端可以接入该小区, 与基站通过覆盖增强模式通信。 本发明实施 例避免了基站在不支持覆盖增强模式时仍向终端指示自身默认的支持情 况, 造成终端一直盲目接入, 使得终端的功耗过大或一直向高层报错。
本发明实施例提供的基站, 通过发送器向终端发送用于指示基站覆盖 的小区是否支持覆盖增强的系统信息, 使得终端可以准确获知小区是否支持 覆盖增强模式通信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避 免了终端的盲目接入, 节省了终端的功耗。
在上述实施例一的基础上, 作为本发明实施例的一种可行的实施方式, 本实施例涉及的是当系统信息为第一系统信息时,发送器 10向终端发送系统 信息的过程。 该第一系统信息可以为普通的系统信息, 即按照标准规定的发 送方式进行发送的系统信息 (即没有在额外的资源上发送的系统信息) 。 该 第一系统信息包括覆盖增强模式指示信息, 该覆盖增强模式指示信息用于向 终端指示基站覆盖的小区是否支持覆盖增强。 则上述发送器 10, 具体用于在 至少一个第一周期的第一时频资源上向终端发送第一系统信息, 以使终端根 据上述覆盖增强模式指示信息获知所述基站覆盖的小区是否支持覆盖增强。
具体的, 上述第一周期可以为发送系统信息的周期, 可以是 MIB的发 送周期 (40ms ) , 还可以是 SIB的发送周期。 上述第一时频资源指的是按 照标准规定的发送方式发送普通 MIB或 SIB的时频资源, 例如可以是上述 发送 MIB时使用的无线帧里的第一个子帧中的第二个时隙, 以及第二个时 隙上的前 4个 OFDM符号。
发送器 10在一个或多个第一周期内发送第一系统信息, 通过第一系 统信息包括的覆盖增强模式指示信息告知终端基站所覆盖的小区的覆盖增 强模式的支持情况。
可选的, 该覆盖增强模式指示信息可以为 MIB中的空闲比特或 SIB中的 指示比特。
可选的, 当第一系统信息为 SIB时, 该覆盖增强模式指示信息还可以为
SIBX的调度信息; 该 SIBX为覆盖增强的公共无线资源配置信息块。 也就是 说, 关于覆盖增强的公共无线资源配置信息被定义成 SIBX (该 SIBX可以为 一个或者几个 SIB),并在 SIB1中添加 SIBX的调度信息(SIB1中会包括 SIB2、 SIB3、 SIBX等信息块的调度信息) , 此时可能不需要额外的比特来指示小区 是否覆盖增强, 终端通过判断 SIB1中是否包含增强的 SIBX的调度信息来判 断小区是否支持覆盖增强模式通信; 如果是在现有的 SIB中扩展域, 则终端 还需要解调到具体的 SIB中才能获得该小区是否支持覆盖增强的信息。 当小 区支持覆盖增强模式通信, 则发送器 10发送给终端的 SIB1中就携带了 SIBX 的调度信息, 使得终端可以通过 SIB1中是否携带了 SIBX的调度信息获知小 区是否支持覆盖增强模式。
另外一种情况, 若在前一个第一周期内发送的 SIB1中没有携带 SIBX 的调度信息, 而在下一个周期或下下几个周期内发送的 SIB1 中携带了 SIBX的调度信息,而发送携带 SIBX的调度信息的 SIB1的时刻和发送没有 携带 SIBX的调度信息的 SIB1的时刻在一个预定的时间段内, 则终端也可 以认为小区是支持覆盖增强模式的。
本发明实施例提供的基站, 通过发送器在至少一个第一周期的第一时 频资源上向终端发送包括覆盖增强模式指示信息的第一系统信息, 使得终端 可以根据该覆盖增强模式指示信息使得终端可以准确获知小区是否支持覆盖 增强模式通信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避免了 终端的盲目接入, 节省了终端的功耗。
在上述实施例一的基础上, 作为本发明实施例的另一种可行的实施方 式, 本实施例涉及的是当系统信息为第二系统信息时, 发送器 10向终端发送 系统信息的过程。该第二系统信息可以为按照增强发送方式发送的系统信息, 即在一个发送系统信息的周期内的额外的资源上发送的普通系统信息的副 本, 在本实施例中第二系统信息可以为增强的第一系统信息。 进一步地, 上 述发送器 10, 具体用于在至少一个第二周期内的第二时频资源向终端发送第 二系统信息, 以使所述终端根据所述第二系统信息获知所述基站覆盖的小区 支持覆盖增强。
具体的, 该第二周期可以为上述第一周期相同, 且第二周期的个数可 以和第一周期的个数相同, 也可以不同。 该第二周期可以为发送增强的系 统信息的周期, 可以是发送增强的 MIB的周期 (40ms ) , 还可以是发送增 强 SIB的周期。这里增强的系统信息可以是在发送第一系统信息的周期内 的额外的时频资源上发送的第一系统信息的副本。 例如: 增强的 MIB可以 是上述实施例以中在第一个时隙的最后 3个 OFDM符号和第二个时隙的第 5 个 OFDM符号上发送的 MIB。第二周期内的第二时频资源实际上就可以为第 一个时隙的最后 3个 OFDM符号和第二个时隙的第 5个 OFDM符号。
由于发送器 10在发送第二系统信息时所使用的第二时频资源在终端 侧会有相应的资源映射, 也就是说发送器 10使用哪些资源作为第二时频 资源发送第二系统信息终端是可以知道的。 因此, 只要发送器 10 向终端 发送了第二系统信息, 终端就可以根据终端侧的资源映射获知该系统信息 是增强的系统信息, 说明基站所覆盖的小区是支持覆盖增强的。
进一步地, 上述发送器 10连续两次发送所述第二系统信息的时间间隔 不大于第一预设时间段。
上述发送器 10发送第二系统信息所使用的一个或多个第二周期, 实 际上发送器 10 并不是在每个第二周期内都发送第二系统信息 (发送第二 系统信息的第二周期可以是基站和终端协商的, 也可以是由基站自己决定 的) , 可能在 T1时刻发送一个第二系统信息, 在 T2时刻再发送一次第二 系统信息, 从 T2 时刻开始, 距离基站发送下一个第二系统信息的间隔不 大于第一预设时间段, 该第一预设时间段可以在协议上明确规定, 如 10 个无线帧的时间, 或者 10个 PBCH周期的时间等。
本发明实施例提供的基站, 通过发送器在至少一个第二周期的第二时 频资源上向终端发送第二系统信息, 使得终端可以根据该第二系统信息准确 获知小区是否支持覆盖增强模式通信, 并在小区不支持覆盖增强模式通信时 及时告知终端, 避免了终端的盲目接入, 节省了终端的功耗。
图 1为本发明提供的基站实施例二的结构示意图。 本实施例涉及的第二 系统信息为增强的 SIB。 在上述实施例基础上, 进一步地, 该基站还包括: 处理器 11, 用于在上述发送器 10 向所述终端发送第二系统信息之前, 与所 述终端协商发送所述第二系统信息的至少一个第二周期。
具体的, 处理器 11与终端协商发送器 10发送增强的 SIB的第二周期, 即协商在哪些个第二周期内发送增强的 SIB, 在哪些个第二周期内不发送增 强的 SIB。 在处理器 11确定了发送增强的 SIB的第二周期后, 发送器 10在 这些第二周期内的第二时频资源上发送增强的 SIB。
需要说明的是, 增强的 SIB可以是指定义在第二时频资源上重复发送的 正常的 SIB, 每个第二周期内的第二时频资源上重复发送的 SIB里的内容一 样, 如都包含覆盖增强模式下需要的资源配置信息 (即包括 SIBX 的调度信 息) ; 或者, 增强的 SIB还可以是指仅在确定的发送增强的 SIB的第二周期 内发送的携带 SIBX调度信息的 SIB, 但是在其他的第二周期内发送的 SIB中 不包含 SIBX的调度信息。
本发明实施例提供的基站, 通过处理器与终端协商发送增强的 SIB的 第二周期, 并在协商的第二周期内的第二时频资源上向终端发送增强的 SIB,使得终端可以根据该增强的 SIB准确获知小区是否支持覆盖增强模式通 信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避免了终端的盲目 接入, 节省了终端的功耗。 上述实施例是通过发送器向终端发送的系统信息指示基站所覆盖的小区 是否支持覆盖增强; 但是, 在实际的通信过程中, 往往会出现基站覆盖的小 区是支持覆盖增强的, 但是在某一时刻该小区的覆盖增强状态是关闭的, 这 样会很容易导致终端在获知基站覆盖的小区支持覆盖增强的情况下, 一直尝 试接入, 从而使得终端的功耗加大。 因此, 为了避免这种情况, 下述实施例 进一步地向终端指示了小区在支持覆盖增强的情况下, 小区当前的覆盖增强 状态是开启的还是关闭的。 为了能够更好的说明和理解本实施例, 下述实施 例以系统信息为 SIB为例。 在上述实施例的基础上, 作为本发明实施例的一种可行的实施方式, 本实施例涉及的发送器 10通过向终端发送第一寻呼消息向终端指示小区 当前的覆盖增强状态的过程。 则, 上述发送器 10, 还用于向所述终端发送 第一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强状态指示信息, 用于 向所述终端指示所述基站覆盖的小区当前的覆盖增强状态。
具体的, 终端通过检测 PBCH获得系统帧号 (System Frame Number , 以下简称 SFN) , 这里的 PBCH可以是正常的 PBCH (按照标准规定的发送 方式发送的 PBCH) , 也可以是增强的 PBCH (按照增强方式发送的 PBCH) , 基站和终端可以根据该获得的 SFN预定义增强发送的周期 (例如: 预定义 的增强发送周期出现可以通过 SFN mod 12 =0的方式得到增强发送周期的 位置) , 即上述发送增强 SIB的第二周期。 如果 UE是通过检测正常 PBCH 发送而获得的 SFN,可通过检查 SIB1中包含的覆盖增强模式指示信息获知 该小区是否支持覆盖增强模式。
当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的,终端还可以通过发送器 10发送的携带覆盖增强状态指示信 息的第一寻呼消息获知小区当前的覆盖增强状态是开启的还是关闭的, 即终 端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强状 态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
本发明实施例提供的基站, 通过发送器向终端发送系统信息, 使得终 端根据系统信息获知基站覆盖的小区覆盖增强模式的支持情况; 并且, 通 过发送器向终端发送携带覆盖增强状态指示信息的第一寻呼消息, 使得终 端根据该覆盖增强指示信息获知小区当前的覆盖增强状态, 避免了在小区 当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进一步降低了终端的 功耗。
在上述实施例的基础上, 作为本发明实施例的另一种可行的实施方 式, 本实施例涉及的发送器 10通过向终端第二寻呼消息向终端指示小区 覆盖增强状态改变和 /或覆盖增强模式无线资源公共信息参数发生变化, 以 使终端重新获取新的系统信息的过程。 进一步地, 若基站覆盖的小区当前 的覆盖增强状态发生变化和 /或系统覆盖增强模式无线资源公共信息参数发 生变化, 则上述发送器 10, 还用于向终端发送第二寻呼消息; 其中, 该第二 寻呼消息用于向终端指示所述基站覆盖的小区当前的覆盖增强状态发生变化 和 /或系统覆盖增强模式无线资源公共信息参数发生变化, 以使终端重新获取 新的系统信息, 并根据新的系统信息获知变化后的小区的覆盖增强状态和 / 或系统覆盖增强模式无线资源公共信息参数。
具体的,终端通过检测 PBCH获得 SFN,这里的 PBCH可以是正常的 PBCH (按照标准规定的发送方式发送的 PBCH) , 也可以是增强的 PBCH (按照 增强方式发送的 PBCH), 基站和终端可以根据该获得的 SFN预定义增强发 送的周期, 即上述发送增强 SIB 的第二周期。 如果终端是通过检测正常 PBCH发送而获得的 SFN, 可通过检查 SIB1 中包含的覆盖增强模式指示信 息获知该小区是否支持覆盖增强模式。
当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的, 终端还可以根据发送器 10发送的系统信息中包括的覆盖 增强状态指示信息获知小区当前的覆盖增强状态是开启还是关闭的, 即终 端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强状 态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
另一方面, 如果上述发送器 10发送的是增强的 SIB, 使得终端获知小区 是支持覆盖增强模式的, 则发送增强的 SIB的方式可以有多种情况, 分别 是:
第一种: 发送器 10根据基站和终端预定义的规则, 例如由 SFN计算 得到发送增强 SIB的周期的位置 (这里增强 SIB的定义如上所述) 。 如以 SFN=0的无线帧为起点开始的一个时间段内要完成增强 SIB的发送, 即这 里预定义的规则只是预定义了发送增强 SIB的时间段。 进一步地, 发送器 10 根据基站和终端定义的在发送增强 SIB 的时间段内的具体的某个时频 资源上发送增强的 SIB; 并且, 该增强的 SIB中的 SIB1中携带的覆盖增强 状态指示信息可以根据小区当前的实际情况指示。 另外, 在预定义的发送 增强 SIB的时间段之外的时间, 发送器 10可以发送正常的 SIB时, 可以 不包含 SIBX的调度信息。
第二种: 发送器 10在预定义的时频资源位置上发送增强的 SIB时, 当 SIB1中的覆盖增强状态指示信息指示的状态为 off 时, 则 SIB1包含覆 盖增强模式下无线资源公共信息的 SIBX可以不被调度, 即 SIB1中可以不 携带覆盖增强模式指示信息。
第三种: 在 SIB的拓展域中可以包括 SIBX的调度信息, 也可以不包 括 SIBX的调度信息, 或者, SIB1中的覆盖增强状态指示信息所指示的小 区的覆盖增强状态或者增强模式下无线资源公共信息参数发生了变化, 可 以不发送第二寻呼消息通知给普通 UE。但是, 当小区的覆盖增强状态或者 增强模式下无线资源公共信息参数发生了变化, 就需要发送第二寻呼消息 来通知需要覆盖增强的终端这一变化。 该第二寻呼消息可以向终端指示基 站覆盖的小区当前的覆盖增强状态发生了变化和 /或系统覆盖增强模式无线 资源公共信息参数发生变化, 使得终端可以重新获取新的系统信息, 并根据 新的系统信息中的覆盖增强状态和增强模式下无线资源公共信息参数获知 变化后的小区的覆盖增强状态和 /或增强模式下无线资源公共信息参数。
第四种: 如果基站和终端预定义的时频资源个数较多, 为了提高资源 效率, 实际上发送器 10不一定在每个预定义的时频资源上都发送增强的 SIBo 只要终端没有检测到, 可以尝试在下一个预定义的时频资源位置上 再尝试检测。 并且, 当终端根据覆盖增强状态指示信息获知小区当前的覆 盖增强状态为 on时, 则认为当前小区已经工作在覆盖增强模式下, 可以 根据 SIB中增强模式下无线资源的配置启动与基站间的通信; 当终端检测 到的 CEM的状态为 off 时, 由 UE根据实际需要来决定什么时候检测 SIB 中的覆盖增强状态指示信息所指示的小区的覆盖增强状态是否转为 on。
本发明实施例提供的基站, 通过发送器向终端发送包括覆盖增强状态 指示信息和覆盖增强模式无线资源公共信息参数的系统信息,使得终端根据 系统信息获知基站覆盖的小区覆盖增强模式的支持情况以及获知在小区 支持覆盖增强模式的情况下, 小区当前的覆盖增强状态是开启还是关闭, 避免了在小区当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进一步 降低了终端的功耗; 并且, 当小区的覆盖增强状态发生变化时, 通过发送 器向终端发送第二寻呼消息, 使得终端可以重新获取新的系统信息, 并根 据新的系统信息获知变化后的小区的覆盖增强状态和 /或所述系统覆盖增 强模式无线资源公共信息参数, 使得终端能够更好的与基站进行通信。
在上述实施例的基础上, 作为本发明实施例的第三种可行的实施方 式, 本实施例涉及的发送器 10通过向终端第三寻呼消息向终端指示小区 覆盖增强状态改变, 使得终端根据第三寻呼消息获知变化后的小区的覆盖 增强状态的过程。进一步地, 上述系统信息包括覆盖增强状态指示信息和覆 盖增强模式无线资源公共信息参数, 若基站覆盖的小区当前的覆盖增强状态 发生变化, 则上述发送器 10, 还用于向终端发送第三寻呼消息; 该第三寻呼 消息携带覆盖增强状态指示信息, 以使终端根据第三寻呼消息中的覆盖增强 状态指示信息获知变化后的基站覆盖的小区的覆盖增强状态。
具体的,终端通过检测 PBCH获得 SFN,这里的 PBCH可以是正常的 PBCH
(按照标准规定的发送方式发送的 PBCH ) , 也可以是增强的 PBCH (按照 增强方式发送的 PBCH ), 基站和终端可以根据该获得的 SFN预定义增强发 送的周期, 即上述发送增强 SIB 的第二周期。 如果终端是通过检测正常 PBCH发送而获得的 SFN, 可通过检查 SIB1 中包含的覆盖增强模式指示信 息获知该小区是否支持覆盖增强模式。
当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的, 终端还可以根据发送器 10发送的系统信息中包括的覆盖 增强状态指示信息获知小区当前的覆盖增强状态是开启还是关闭的, 即终 端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强状 态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
当终端工作在覆盖增强状态时, 可以不用周期性的检测第三寻呼消息; 当工作异常时, 即当小区的覆盖增强状态发生变化时, 发送器 10会向终端 发送第三寻呼消息, 该第三寻呼消息中携带了覆盖增强状态指示信息, 使 得终端可以根据该第三寻呼消息中的覆盖增强状态指示信息获知变化后的小 区的覆盖增强状态, 即终端不需要再重新获取新的系统信息来获知变化后的 小区的覆盖增强状态, 并且由于终端检测第三寻呼消息比检测系统信息更容 易, 因此进一步地节省了终端的功耗。
本发明实施例提供的基站, 通过发送器向终端发送包括覆盖增强状态 指示信息和覆盖增强模式无线资源公共信息参数的系统信息,使得终端根据 系统信息获知基站覆盖的小区覆盖增强模式的支持情况以及获知在小区 支持覆盖增强模式的情况下, 小区当前的覆盖增强状态是开启还是关闭, 避免了在小区当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进一步 降低了终端的功耗; 并且, 当小区的覆盖增强状态发生变化时, 通过发送 器向终端发送第三寻呼消息, 使得终端可以重新根据第三寻呼消息中的覆 盖增强状态指示信息获知变化后的小区的覆盖增强状态, 使得终端能够更 好的与基站进行通信, 并进一步地节省了终端的功耗。
在上述实施例的基础上, 作为本发明实施例的第四种可能的实施方 式,本实施例涉及的是当系统信息包括覆盖增强模式所使用的资源数量和所 述终端尝试接入所述基站覆盖的小区的最大接入次数时, 终端根据该系统信 息获知基站覆盖的小区当前的覆盖增强状态的具体过程。
具体的, 发送器 10向终端发送系统信息, 该系统信息中包括覆盖增强模 式所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大接入次 数, 并且基站还可以通过配置覆盖增强模式下的资源的数量来调整网络中接 入覆盖增强的终端的数量, 例如: 可以调整物理随机接入信道 (Physical Random Access Channel , 以下简称 PRACH) 的时频资源的密度。 可选的, 该 系统信息可以在至少一个第一周期发送, 也可以在至少一个第二周期发送, 还可以在至少一个第一周期或第二周期选择性发送, 这里的选择性发送指的 是在某些第一周期或第二周期内可以选择不发送。 当终端通过 PRACH接入网 络始终无法成功, 而且达到基站配置的最大尝试接入次数后, 终端则认为此 时可能基站不能充分支持覆盖增强模式, 即获知基站覆盖的小区当前的覆盖 增强状态为关闭, 因此终端可以随机等待一段时间后再次尝试接入, 而不是 向高层报错。
本发明实施例提供的基站, 通过发送器向终端发送系统信息, 使得终 端根据系统信息获知基站覆盖的小区是否支持覆盖增强模式; 并使得终端 通过系统信息内包括的覆盖增强模式所使用的资源数量和所述终端尝试接 入所述基站覆盖的小区的最大接入次数尝试接入基站覆盖的小区, 并在达到 最大接入次数后仍不能接入小区, 则确定小区当前的覆盖增强状态是关闭 的, 从而选择过一段时间再次接入, 避免了在小区当前覆盖增强状态是关闭 的情况时, 终端一直盲目接入, 降低了终端的功耗。 本发明实施例三提供了一种基站, 该基站包括: 发送模块 20, 用于向 终端发送系统信息, 所述系统信息用于向所述终端指示所述基站覆盖的小区 是否支持覆盖增强; 其中, 所述系统信息包括 MIB和 /或 SIB。
具体的, 发送模块 20发送系统信息给终端, 可以按照标准中规定的普通 的发送方式, 也可以按照增强的发送方式, 按照不同的发送方式发送系统信 息时所使用的资源是不同的。 该系统信道可以是 MIB, 也可以是 SIB, 还可以 是 MIB和 SIB。 这里的 SIB可以是一个, 也可以是多个 (SIB1、 SIB2、 SIB3 等) 。
假设系统信息是单纯的 MIB, 按照标准中规定的 MIB的发送方式, 发送 模块 20将 MIB承载在 PBCH上进行传输。 PBCH以 40ms为周期发送, 并分成 4 段在 4个连续的无线帧内发送, 在一个周期里 PBCH承载的 MIB信息相同; 每 个无线帧内 PBCH分段仅在第一个子帧内发送,而且仅占用了第二个时隙里的 前 4个 OFDM符号。 因此这些 OFDM符号以及所使用的子帧即就是发送系统信 息所使用的时频资源。
若 MIB是按照增强的发送方式由发送模块 20发送给终端, 即发送的 是增强的 MIB,这里增强的 MIB是指在 MIB发送周期里预定义的额外资 源上发送的 MIB副本。 增强的 MIB的资源映射方式可以有很多种, 本发明 实施例不限定增强的 MIB使用的资源映射方法。 例如, MIB增强的发送方 式以 40ms为周期, 分为 4段在 4个连续的无线帧内发送, 但是在每个无 线帧的第一个子帧内,除第二个时隙的前 4个 OFDM符号用作 PBCH映射外, 额外使用第一个时隙的最后 3个 OFDM符号以及第二个时隙的第 5个 0FDM 符号重复映射 PBCH—次。 也就是说, 第一个时隙的最后 3个 0FDM符号和 第二个时隙的第 5个 0FDM符号上发送的 MIB就是增强的 MIB,且第一个时 隙的最后 3个 0FDM符号和第二个时隙的第 5个 0FDM符号就是 MIB发送周 期里预定义的额外的资源。
但是, 无论系统信息是上述哪一种方式发送, 本发明实施例提供的系 统信息均可以向终端指示基站所覆盖的小区是否支持覆盖增强, 即本发明 实施例提供的系统信息是根据基站所覆盖的小区的覆盖增强实际的支持 情况向终端指示的, 该系统信息可以通过相应的指示比特来向终端指示小 区的覆盖增强的支持情况, 还可以是携带其他的指示信息来向终端指示小 区的覆盖增强的支持情况, 本发明实施例对系统信息以何种方式向终端指 示小区的覆盖增强的支持情况并不做限制。 该系统信息可以使得终端获知 准确的小区覆盖增强的支持情况。 当终端获知小区支持覆盖增强模式通 信, 则终端可以接入该小区, 与基站通过覆盖增强模式通信。 本发明实施 例避免了基站在不支持覆盖增强模式时仍向终端指示自身默认的支持情 况, 造成终端一直盲目接入, 使得终端的功耗过大或一直向高层报错。 本发明实施例提供的基站, 通过发送模块向终端发送用于指示基站覆 盖的小区是否支持覆盖增强的系统信息, 使得终端可以准确获知小区是否支 持覆盖增强模式通信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避免了终端的盲目接入, 节省了终端的功耗。
在上述实施例一的基础上, 作为本发明实施例的一种可行的实施方式, 本实施例涉及的是当系统信息为第一系统信息时,发送模块 20向终端发送系 统信息的过程。 该第一系统信息可以为普通的系统信息, 即按照标准规定的 发送方式进行发送的系统信息 (即没有在额外的资源上发送的系统信息) 。 该第一系统信息包括覆盖增强模式指示信息, 该覆盖增强模式指示信息用于 向终端指示基站覆盖的小区是否支持覆盖增强。 则上述发送模块 20, 具体用 于在至少一个第一周期的第一时频资源上向终端发送第一系统信息, 以使终 端根据上述覆盖增强模式指示信息获知所述基站覆盖的小区是否支持覆盖增 强。
具体的, 上述第一周期可以为发送系统信息的周期, 可以是 MIB的发 送周期 (40ms ) , 还可以是 SIB的发送周期。 上述第一时频资源指的是按 照标准规定的发送方式发送普通 MIB或 SIB的时频资源, 例如可以是上述 发送 MIB时使用的无线帧里的第一个子帧中的第二个时隙, 以及第二个时 隙上的前 4个 OFDM符号。
发送模块 20在一个或多个第一周期内发送第一系统信息, 通过第一 系统信息包括的覆盖增强模式指示信息告知终端基站所覆盖的小区的覆盖 增强模式的支持情况。
可选的, 该覆盖增强模式指示信息可以为 MIB中的空闲比特或 SIB中的 指示比特。
可选的, 当第一系统信息为 SIB时, 该覆盖增强模式指示信息还可以为
SIBX的调度信息; 该 SIBX为覆盖增强的公共无线资源配置信息块。 也就是 说, 关于覆盖增强的公共无线资源配置信息被定义成 SIBX (该 SIBX可以为 一个或者几个 SIB),并在 SIB1中添加 SIBX的调度信息(SIB1中会包括 SIB2、 SIB3、 SIBX等信息块的调度信息) , 此时可能不需要额外的比特来指示小区 是否覆盖增强, 终端通过判断 SIB1中是否包含增强的 SIBX的调度信息来判 断小区是否支持覆盖增强模式通信; 如果是在现有的 SIB中扩展域, 则终端 还需要解调到具体的 SIB中才能获得该小区是否支持覆盖增强的信息。 当小 区支持覆盖增强模式通信,则发送模块 20发送给终端的 SIB1中就携带了 SIBX 的调度信息, 使得终端可以通过 SIB1中是否携带了 SIBX的调度信息获知小 区是否支持覆盖增强模式。
另外一种情况, 若在前一个第一周期内发送的 SIB1中没有携带 SIBX 的调度信息, 而在下一个周期或下下几个周期内发送的 SIB1 中携带了 SIBX的调度信息,而发送携带 SIBX的调度信息的 SIB1的时刻和发送没有 携带 SIBX的调度信息的 SIB1的时刻在一个预定的时间段内, 则终端也可 以认为小区是支持覆盖增强模式的。
本发明实施例提供的基站, 通过发送模块在至少一个第一周期的第一 时频资源上向终端发送包括覆盖增强模式指示信息的第一系统信息, 使得终 端可以根据该覆盖增强模式指示信息使得终端可以准确获知小区是否支持覆 盖增强模式通信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避免 了终端的盲目接入, 节省了终端的功耗。
在上述实施例一的基础上, 作为本发明实施例的另一种可行的实施方 式, 本实施例涉及的是当系统信息为第二系统信息时, 发送模块 20向终端发 送系统信息的过程。 该第二系统信息可以为按照增强发送方式发送的系统信 息, 即在一个发送系统信息的周期内的额外的资源上发送的普通系统信息的 副本, 在本实施例中第二系统信息可以为增强的第一系统信息。 进一步地, 上述发送模块 20, 具体用于在至少一个第二周期内的第二时频资源向终端发 送第二系统信息, 以使所述终端根据所述第二系统信息获知所述基站覆盖的 小区支持覆盖增强。
具体的, 该第二周期可以为上述第一周期相同, 且第二周期的个数可 以和第一周期的个数相同, 也可以不同。 该第二周期可以为发送增强的系 统信息的周期, 可以是发送增强的 MIB的周期 (40ms ) , 还可以是发送增 强 SIB的周期。这里增强的系统信息可以是在发送第一系统信息的周期内 的额外的时频资源上发送的第一系统信息的副本。 例如: 增强的 MIB可以 是上述实施例以中在第一个时隙的最后 3个 OFDM符号和第二个时隙的第 5 个 OFDM符号上发送的 MIB。第二周期内的第二时频资源实际上就可以为第 一个时隙的最后 3个 OFDM符号和第二个时隙的第 5个 OFDM符号。
由于发送模块 20在发送第二系统信息时所使用的第二时频资源在终 端侧会有相应的资源映射, 也就是说发送模块 20 使用哪些资源作为第二 时频资源发送第二系统信息终端是可以知道的。 因此, 只要发送模块 20 向终端发送了第二系统信息, 终端就可以根据终端侧的资源映射获知该系 统信息是增强的系统信息, 说明基站所覆盖的小区是支持覆盖增强的。
进一步地, 上述发送模块 20连续两次发送所述第二系统信息的时间间 隔不大于第一预设时间段。
上述发送模块 20发送第二系统信息所使用的一个或多个第二周期, 实际上发送模块 20 并不是在每个第二周期内都发送第二系统信息 (发送 第二系统信息的第二周期可以是基站和终端协商的, 也可以是由基站自己 决定的) , 可能在 T1时刻发送一个第二系统信息, 在 T2时刻再发送一次 第二系统信息, 从 T2 时刻开始, 距离基站发送下一个第二系统信息的间 隔不大于第一预设时间段, 该第一预设时间段可以在协议上明确规定, 如 10个无线帧的时间, 或者 10个 PBCH周期的时间等。
本发明实施例提供的基站, 通过发送模块在至少一个第二周期的第二 时频资源上向终端发送第二系统信息, 使得终端可以根据该第二系统信息准 确获知小区是否支持覆盖增强模式通信, 并在小区不支持覆盖增强模式通信 时及时告知终端, 避免了终端的盲目接入, 节省了终端的功耗。
图 2为本发明提供的基站实施例四的结构示意图。 本实施例涉及的第二 系统信息为增强的 SIB。 在上述实施例三的基础上, 进一步地, 该基站还包 括: 协商模块 21, 用于在上述发送模块 20 向所述终端发送第二系统信息之 前, 与所述终端协商发送所述第二系统信息的至少一个第二周期。
具体的, 协商模块 21与终端协商发送模块 20发送增强的 SIB的第二周 期, 即协商在哪些个第二周期内发送增强的 SIB, 在哪些个第二周期内不发 送增强的 SIB。 在协商模块 21确定了发送增强的 SIB的第二周期后, 发送模 块 20在这些第二周期内的第二时频资源上发送增强的 SIB。
需要说明的是, 增强的 SIB可以是指定义在第二时频资源上重复发送的 正常的 SIB, 每个第二周期内的第二时频资源上重复发送的 SIB里的内容一 样, 如都包含覆盖增强模式下需要的资源配置信息 (即包括 SIBX 的调度信 息) ; 或者, 增强的 SIB还可以是指仅在确定的发送增强的 SIB的第二周期 内发送的携带 SIBX调度信息的 SIB, 但是在其他的第二周期内发送的 SIB中 不包含 SIBX的调度信息。
本发明实施例提供的基站, 通过协商模块与终端协商发送增强的 SIB 的第二周期, 并在协商的第二周期内的第二时频资源上由发送模块向终端 发送增强的 SIB, 使得终端可以根据该增强的 SIB准确获知小区是否支持覆 盖增强模式通信, 并在小区不支持覆盖增强模式通信时及时告知终端, 避免 了终端的盲目接入, 节省了终端的功耗。 上述实施例是通过发送模块向终端发送的系统信息指示基站所覆盖的小 区是否支持覆盖增强; 但是, 在实际的通信过程中, 往往会出现基站覆盖的 小区是支持覆盖增强的, 但是在某一时刻该小区的覆盖增强状态是关闭的, 这样会很容易导致终端在获知基站覆盖的小区支持覆盖增强的情况下, 一直 尝试接入, 从而使得终端的功耗加大。 因此, 为了避免这种情况, 下述实施 例进一步地向终端指示了小区在支持覆盖增强的情况下, 小区当前的覆盖增 强状态是开启的还是关闭的。 为了能够更好的说明和理解本实施例, 下述实 施例以系统信息为 SIB为例。 在上述实施例的基础上, 作为本发明实施例的一种可行的实施方式, 本实施例涉及的发送模块 20通过向终端发送第一寻呼消息向终端指示小 区当前的覆盖增强状态的过程。 则, 上述发送模块 20, 还用于向所述终端 发送第一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强状态指示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆盖增强状态。
具体的,终端通过检测 PBCH获得 SFN,这里的 PBCH可以是正常的 PBCH (按照标准规定的发送方式发送的 PBCH) , 也可以是增强的 PBCH (按照 增强方式发送的 PBCH), 基站和终端可以根据该获得的 SFN预定义增强发 送的周期 (例如: 预定义的增强发送周期出现可以通过 SFN mod 12 =0的 方式得到增强发送周期的位置) , 即上述发送增强 SIB的第二周期。 如果 UE是通过检测正常 PBCH发送而获得的 SFN, 可通过检查 SIB1中包含的覆 盖增强模式指示信息获知该小区是否支持覆盖增强模式。 当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的,终端还可以通过发送模块 20发送的携带覆盖增强状态指示 信息的第一寻呼消息获知小区当前的覆盖增强状态是开启的还是关闭的, 即 终端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强 状态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
本发明实施例提供的基站, 通过发送模块向终端发送系统信息, 使得 终端根据系统信息获知基站覆盖的小区覆盖增强模式的支持情况; 并且, 通过发送模块向终端发送携带覆盖增强状态指示信息的第一寻呼消息, 使 得终端根据该覆盖增强指示信息获知小区当前的覆盖增强状态, 避免了在 小区当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进一步降低了终 端的功耗。
在上述实施例的基础上, 作为本发明实施例的另一种可行的实施方 式, 本实施例涉及的发送模块 20通过向终端第二寻呼消息向终端指示小 区覆盖增强状态改变和 /或覆盖增强模式无线资源公共信息参数发生变化, 以使终端重新获取新的系统信息的过程。 进一步地, 若基站覆盖的小区当 前的覆盖增强状态发生变化和 /或系统覆盖增强模式无线资源公共信息参数 发生变化, 则上述发送模块 20, 还用于向终端发送第二寻呼消息; 其中, 该 第二寻呼消息用于向终端指示所述基站覆盖的小区当前的覆盖增强状态发生 变化和 /或系统覆盖增强模式无线资源公共信息参数发生变化, 以使终端重新 获取新的系统信息, 并根据新的系统信息获知变化后的小区的覆盖增强状态 和 /或系统覆盖增强模式无线资源公共信息参数。
具体的,终端通过检测 PBCH获得 SFN,这里的 PBCH可以是正常的 PBCH (按照标准规定的发送方式发送的 PBCH ) , 也可以是增强的 PBCH (按照 增强方式发送的 PBCH ), 基站和终端可以根据该获得的 SFN预定义增强发 送的周期, 即上述发送增强 SIB 的第二周期。 如果终端是通过检测正常 PBCH发送而获得的 SFN, 可通过检查 SIB1 中包含的覆盖增强模式指示信 息获知该小区是否支持覆盖增强模式。
当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的, 终端还可以根据发送模块 20发送的系统信息中包括的覆 盖增强状态指示信息获知小区当前的覆盖增强状态是开启还是关闭的, 即 终端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强 状态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
另一方面, 如果上述发送模块 20发送的是增强的 SIB, 使得终端获知小 区是支持覆盖增强模式的, 则发送增强的 SIB的方式可以有多种情况, 分 别是:
第一种: 发送模块 20根据基站和终端预定义的规则, 例如由 SFN计 算得到发送增强 SIB的周期的位置 (这里增强 SIB的定义如上所述) 。 如 以 SFN=0的无线帧为起点开始的一个时间段内要完成增强 SIB的发送, 即 这里预定义的规则只是预定义了发送增强 SIB的时间段。 进一步地, 发送 模块 20根据基站和终端定义的在发送增强 SIB的时间段内的具体的某个 时频资源上发送增强的 SIB; 并且, 该增强的 SIB中的 SIB1中携带的覆盖 增强状态指示信息可以根据小区当前的实际情况指示。 另外, 在预定义的 发送增强 SIB的时间段之外的时间, 发送模块 20可以发送正常的 SIB时, 可以不包含 SIBX的调度信息。
第二种: 发送模块 20在预定义的时频资源位置上发送增强的 SIB时, 当 SIB1中的覆盖增强状态指示信息指示的状态为 off 时, 则 SIB1包含覆 盖增强模式下无线资源公共信息的 SIBX可以不被调度, 即 SIB1中可以不 携带覆盖增强模式指示信息。
第三种: 在 SIB的拓展域中可以包括 SIBX的调度信息, 也可以不包 括 SIBX的调度信息, 或者, SIB1中的覆盖增强状态指示信息所指示的小 区的覆盖增强状态或者增强模式下无线资源公共信息参数发生了变化, 可 以不发送第二寻呼消息通知给普通 UE。但是, 当小区的覆盖增强状态或者 增强模式下无线资源公共信息参数发生了变化, 就需要发送第二寻呼消息 来通知需要覆盖增强的终端这一变化。 该第二寻呼消息可以向终端指示基 站覆盖的小区当前的覆盖增强状态发生了变化和 /或系统覆盖增强模式无线 资源公共信息参数发生变化, 使得终端可以重新获取新的系统信息, 并根据 新的系统信息中的覆盖增强状态和增强模式下无线资源公共信息参数获知 变化后的小区的覆盖增强状态和 /或增强模式下无线资源公共信息参数。
第四种: 如果基站和终端预定义的时频资源个数较多, 为了提高资源 效率, 实际上发送模块 20不一定在每个预定义的时频资源上都发送增强 的 SIB。 只要终端没有检测到, 可以尝试在下一个预定义的时频资源位置 上再尝试检测。 并且, 当终端根据覆盖增强状态指示信息获知小区当前的 覆盖增强状态为 on时, 则认为当前小区已经工作在覆盖增强模式下, 可 以根据 SIB中增强模式下无线资源的配置启动与基站间的通信; 当终端检 测到的 CEM的状态为 off 时,由 UE根据实际需要来决定什么时候检测 SIB 中的覆盖增强状态指示信息所指示的小区的覆盖增强状态是否转为 on。
本发明实施例提供的基站, 通过发送模块向终端发送包括覆盖增强状 态指示信息和覆盖增强模式无线资源公共信息参数的系统信息, 使得终端根 据系统信息获知基站覆盖的小区覆盖增强模式的支持情况以及获知在小 区支持覆盖增强模式的情况下, 小区当前的覆盖增强状态是开启还是关 闭, 避免了在小区当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进 一步降低了终端的功耗; 并且, 当小区的覆盖增强状态发生变化时, 通过 发送模块向终端发送第二寻呼消息, 使得终端可以重新获取新的系统信 息,并根据新的系统信息获知变化后的小区的覆盖增强状态和 /或所述系统 覆盖增强模式无线资源公共信息参数,使得终端能够更好的与基站进行通信。
在上述实施例的基础上, 作为本发明实施例的第三种可行的实施方 式, 本实施例涉及的发送模块 20通过向终端第三寻呼消息向终端指示小 区覆盖增强状态改变, 使得终端根据第三寻呼消息获知变化后的小区的覆 盖增强状态的过程。进一步地, 上述系统信息包括覆盖增强状态指示信息和 覆盖增强模式无线资源公共信息参数, 若基站覆盖的小区当前的覆盖增强状 态发生变化, 则上述发送模块 20, 还用于向终端发送第三寻呼消息; 该第三 寻呼消息携带覆盖增强状态指示信息, 以使终端根据第三寻呼消息中的覆盖 增强状态指示信息获知变化后的基站覆盖的小区的覆盖增强状态。
具体的,终端通过检测 PBCH获得 SFN,这里的 PBCH可以是正常的 PBCH (按照标准规定的发送方式发送的 PBCH ) , 也可以是增强的 PBCH (按照 增强方式发送的 PBCH ), 基站和终端可以根据该获得的 SFN预定义增强发 送的周期, 即上述发送增强 SIB 的第二周期。 如果终端是通过检测正常 PBCH发送而获得的 SFN, 可通过检查 SIB1 中包含的覆盖增强模式指示信 息获知该小区是否支持覆盖增强模式。
当终端根据 SIB中的覆盖增强指示信息或者增强的 SIB获知小区是支 持覆盖增强的, 终端还可以根据发送模块 20发送的系统信息中包括的覆 盖增强状态指示信息获知小区当前的覆盖增强状态是开启还是关闭的, 即 终端可以明确知道小区当前的覆盖增强状态, 以使终端在小区当前覆盖增强 状态是关闭的情况时, 不会一直尝试接入小区, 降低了终端的功耗。
当终端工作在覆盖增强状态时, 可以不用周期性的检测第三寻呼消息; 当工作异常时, 即当小区的覆盖增强状态发生变化时, 发送模块 20会向终 端发送第三寻呼消息, 该第三寻呼消息中携带了覆盖增强状态指示信息, 使得终端可以根据该第三寻呼消息中的覆盖增强状态指示信息获知变化后的 小区的覆盖增强状态, 即终端不需要再重新获取新的系统信息来获知变化后 的小区的覆盖增强状态, 并且由于终端检测第三寻呼消息比检测系统信息更 容易, 因此进一步地节省了终端的功耗。
本发明实施例提供的基站, 通过发送模块向终端发送包括覆盖增强状 态指示信息和覆盖增强模式无线资源公共信息参数的系统信息, 使得终端根 据系统信息获知基站覆盖的小区覆盖增强模式的支持情况以及获知在小 区支持覆盖增强模式的情况下, 小区当前的覆盖增强状态是开启还是关 闭, 避免了在小区当前覆盖增强状态是关闭的情况时, 终端的盲目接入, 进 一步降低了终端的功耗; 并且, 当小区的覆盖增强状态发生变化时, 通过 发送模块向终端发送第三寻呼消息, 使得终端可以重新根据第三寻呼消息 中的覆盖增强状态指示信息获知变化后的小区的覆盖增强状态, 使得终端 能够更好的与基站进行通信, 并进一步地节省了终端的功耗。
在上述实施例的基础上, 作为本发明实施例的第四种可能的实施方 式,本实施例涉及的是当系统信息包括覆盖增强模式所使用的资源数量和所 述终端尝试接入所述基站覆盖的小区的最大接入次数时, 终端根据该系统信 息获知基站覆盖的小区当前的覆盖增强状态的具体过程。
具体的, 发送模块 20向终端发送系统信息, 该系统信息中包括覆盖增强 模式所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大接入 次数, 并且基站还可以通过配置覆盖增强模式下的资源的数量来调整网络中 接入覆盖增强的终端的数量, 例如: 可以调整 PRACH的时频资源的密度。 可 选的, 该系统信息可以在至少一个第一周期发送, 也可以在至少一个第二周 期发送, 还可以在至少一个第一周期或第二周期选择性发送, 这里的选择性 发送指的是在某些第一周期或第二周期内可以选择不发送。当终端通过 PRACH 接入网络始终无法成功, 而且达到基站配置的最大尝试接入次数后, 终端则 认为此时可能基站不能充分支持覆盖增强模式, 即获知基站覆盖的小区当前 的覆盖增强状态为关闭, 因此终端可以随机等待一段时间后再次尝试接入, 而不是向高层报错。
本发明实施例提供的基站, 通过发送模块向终端发送系统信息, 使得 终端根据系统信息获知基站覆盖的小区是否支持覆盖增强模式; 并使得终 端通过系统信息内包括的覆盖增强模式所使用的资源数量和所述终端尝试 接入所述基站覆盖的小区的最大接入次数尝试接入基站覆盖的小区, 并在达 到最大接入次数后仍不能接入小区,则确定小区当前的覆盖增强状态是关闭 的, 从而选择过一段时间再次接入, 避免了在小区当前覆盖增强状态是关闭 的情况时, 终端一直盲目接入, 降低了终端的功耗。 本发明实施例一提供一种小区覆盖增强模式的指示方法。该方法的执行 主体可以是上述实施例中的基站。 该方法包括:
S101 : 基站向终端发送系统信息, 该系统信息用于向终端指示基站覆盖 的小区是否支持覆盖增强; 其中, 该系统信息包括主系统信息块 MIB和 /或系 统信息块 SIB。
本发明提供的小区覆盖增强模式的指示方法的实施例可以参照上述基站 实施例的执行过程, 其实现原理和技术效果类似, 在此不再赘述。
可选的, 若所述系统信息为第一系统信息, 且所述第一系统信息包括覆 盖增强模式指示信息, 所述覆盖增强模式指示信息用于向所述终端指示所述 基站覆盖的小区是否支持覆盖增强; 则上述 S101具体为: 所述基站在至少一 个第一周期的第一时频资源上向所述终端发送所述第一系统信息, 以使所述 终端根据所述覆盖增强模式指示信息获知所述基站覆盖的小区是否支持覆盖 增强。
进一步地, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息 为所述 SIB中的指示比特或 SIBX的调度信息; 其中, 所述 SIBX为覆盖增强 的公共无线资源配置信息块。
本发明提供的小区覆盖增强模式的指示方法的实施例可以参照上述基站 实施例的执行过程, 其实现原理和技术效果类似, 在此不再赘述。
可选的, 若所述系统信息为第二系统信息, 则上述 S101具体可以为: 所 述基站在至少一个第二周期内的第二时频资源向所述终端发送第二系统信 息, 以使所述终端根据所述第二系统信息获知所述基站覆盖的小区支持覆盖 增强。
图 3为本发明提供的小区覆盖增强模式的指示方法实施例二的流程图。 该方法包括:
S201 : 基站与终端协商发送第二系统信息的至少一个第二周期。
S102 : 基站在至少一个第二周期内的第二时频资源向终端发送第二系统 信息, 以使终端根据所述第二系统信息获知基站覆盖的小区支持覆盖增强。
本发明提供的小区覆盖增强模式的指示方法的实施例可以参照上述基站 实施例的执行过程, 其实现原理和技术效果类似, 在此不再赘述。
可选的, 在上述方法实施例的基础上, 该方法还可以包括: 所述基站向 所述终端发送第一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强状态指 示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆盖增强状态。
可选的, 在上述方法实施例的基础上, 所述系统信息包括覆盖增强状态 指示信息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当 前的覆盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共信息 参数发生变化, 则所述方法还可以包括: 所述基站向所述终端发送第二寻呼 消息; 其中, 所述第二寻呼消息用于向所述终端指示所述基站覆盖的小区当 前的覆盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共信息 参数发生变化, 以使所述终端重新获取新的系统信息, 并根据所述新的系统 信息获知变化后的所述基站覆盖的小区的覆盖增强状态和 /或所述系统覆盖 增强模式无线资源公共信息参数。
可选的, 在上述方法实施例的基础上, 所述系统信息包括覆盖增强状态 指示信息和覆盖增强模式无线资源公共信息参数, 若所述基站覆盖的小区当 前的覆盖增强状态发生变化, 则所述方法还可以包括: 所述基站向所述终端 发送第三寻呼消息; 所述第三寻呼消息携带所述覆盖增强状态指示信息, 以 使所述终端根据所述第三寻呼消息中的覆盖增强状态指示信息获知变化后的 所述基站覆盖的小区的覆盖增强状态。 可选的, 在上述方法实施例的基础上, 所述系统信息包括覆盖增强模式 所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大接入次 数, 以使所述终端根据所述接入所述基站覆盖的小区的次数是否达到所述最 大接入次数判断所述基站覆盖的小区当前的覆盖增强状态。
本发明提供的小区覆盖增强模式的指示方法的实施例可以参照上述基站 实施例的执行过程, 其实现原理和技术效果类似, 在此不再赘述。
本领域普通技术人员可以理解: 实现上述方法实施例的全部或部分步骤 可以通过程序指令相关的硬件来完成, 前述的程序可以存储于一计算机可读 取存储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述 的存储介质包括: R0M、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对 其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims

权 利 要 求 书
1、 一种基站, 其特征在于, 包括:
发送器, 用于向终端发送系统信息, 所述系统信息用于向所述终端指示 所述基站覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统信 息块 MIB和 /或系统信息块 SIB。
2、 根据权利要求 1所述的基站, 其特征在于, 所述系统信息为第一系统 信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述覆盖增强模式 指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆盖增强; 则所 述发送器, 具体用于在至少一个第一周期的第一时频资源上向所述终端发送 所述第一系统信息, 以使所述终端根据所述覆盖增强模式指示信息获知所述 基站覆盖的小区是否支持覆盖增强。
3、 根据权利要求 2 所述的基站, 其特征在于, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为所述 SIB中的指示比特或 SIBX的调度 信息; 其中, 所述 SIBX为覆盖增强的公共无线资源配置信息块。
4、 根据权利要求 1所述的基站, 其特征在于, 所述系统信息为第二系统 信息, 则所述发送器, 具体用于在至少一个第二周期内的第二时频资源向所 述终端发送第二系统信息, 以使所述终端根据所述第二系统信息获知所述基 站覆盖的小区支持覆盖增强。
5、 根据权利要求 4所述的基站, 其特征在于, 所述发送器连续两次发送 所述第二系统信息的时间间隔不大于第一预设时间段。
6、 根据权利要求 5所述的基站, 其特征在于, 所述基站还包括: 处理器, 用于在所述发送器向所述终端发送第二系统信息之前, 与所述 终端协商发送所述第二系统信息的至少一个第二周期。
7、 根据权利要求 1-6任一项所述的基站, 其特征在于, 所述发送器, 还 用于向所述终端发送第一寻呼消息; 其中, 所述第一寻呼消息包括覆盖增强 状态指示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆盖增强状 态。
8、 根据权利要求 1-6任一项所述的基站, 其特征在于, 所述系统信息包 括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所述基 站覆盖的小区当前的覆盖增强状态发生变化和 /或所述系统覆盖增强模式无 线资源公共信息参数发生变化, 则所述发送器, 还用于向所述终端发送第二 寻呼消息; 其中, 所述第二寻呼消息用于向所述终端指示所述基站覆盖的小 区当前的覆盖增强状态发生变化和 /或所述系统覆盖增强模式无线资源公共 信息参数发生变化, 以使所述终端重新获取新的系统信息, 并根据所述新的 系统信息获知变化后的所述基站覆盖的小区的覆盖增强状态和 /或所述系统 覆盖增强模式无线资源公共信息参数。
9、 根据权利要求 1-6任一项所述的基站, 其特征在于, 所述系统信息包 括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所述基 站覆盖的小区当前的覆盖增强状态发生变化, 则所述发送器, 还用于向所述 终端发送第三寻呼消息;所述第三寻呼消息携带所述覆盖增强状态指示信息, 以使所述终端根据所述第三寻呼消息中的覆盖增强状态指示信息获知变化后 的所述基站覆盖的小区的覆盖增强状态。
10、 根据权利要求 1所述的基站, 其特征在于, 所述系统信息包括覆盖 增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大 接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次数是否达到 所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状态。
11、 一种基站, 其特征在于, 包括:
发送模块, 用于向终端发送系统信息, 所述系统信息用于向所述终端指 示所述基站覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统 信息块 MIB和 /或系统信息块 SIB。
12、 根据权利要求 1所述的基站, 其特征在于, 所述系统信息为第一系 统信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述覆盖增强模 式指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆盖增强; 则 所述发送模块, 具体用于在至少一个第一周期的第一时频资源上向所述终端 发送所述第一系统信息, 以使所述终端根据所述覆盖增强模式指示信息获知 所述基站覆盖的小区是否支持覆盖增强。
13、 根据权利要求 12所述的基站, 其特征在于, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为所述 SIB中的指示比特或 SIBX的调度 信息; 其中, 所述 SIBX为覆盖增强的公共无线资源配置信息块。
14、 根据权利要求 11所述的基站, 其特征在于, 所述系统信息为第二系 统信息, 则所述发送模块, 具体用于在至少一个第二周期内的第二时频资源 向所述终端发送第二系统信息, 以使所述终端根据所述第二系统信息获知所 述基站覆盖的小区支持覆盖增强。
15、 根据权利要求 14所述的基站, 其特征在于, 所述发送模块连续两次 发送所述第二系统信息的时间间隔不大于第一预设时间段。
16、 根据权利要求 15所述的基站, 其特征在于, 所述基站还包括: 协商模块, 用于在所述发送模块向所述终端发送第二系统信息之前, 与 所述终端协商发送所述第二系统信息的至少一个第二周期。
17、 根据权利要求 11-16任一项所述的基站, 其特征在于, 所述发送模 块, 还用于向所述终端发送第一寻呼消息; 其中, 所述第一寻呼消息包括覆 盖增强状态指示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆盖 增强状态。
18、 根据权利要求 11-16任一项所述的基站, 其特征在于, 所述系统信 息包括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所 述基站覆盖的小区当前的覆盖增强状态发生变化和 /或所述系统覆盖增强模 式无线资源公共信息参数发生变化, 则所述发送模块, 还用于向所述终端发 送第二寻呼消息; 其中, 所述第二寻呼消息用于向所述终端指示所述基站覆 盖的小区当前的覆盖增强状态发生变化和 /或所述系统覆盖增强模式无线资 源公共信息参数发生变化, 以使所述终端重新获取新的系统信息, 并根据所 述新的系统信息获知变化后的所述基站覆盖的小区的覆盖增强状态和 /或所 述系统覆盖增强模式无线资源公共信息参数。
19、 根据权利要求 11-16任一项所述的基站, 其特征在于, 所述系统信 息包括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所 述基站覆盖的小区当前的覆盖增强状态发生变化, 则所述发送模块, 还用于 向所述终端发送第三寻呼消息; 所述第三寻呼消息携带所述覆盖增强状态指 示信息, 以使所述终端根据所述第三寻呼消息中的覆盖增强状态指示信息获 知变化后的所述基站覆盖的小区的覆盖增强状态。
20、 根据权利要求 11所述的基站, 其特征在于, 所述系统信息包括覆盖 增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大 接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次数是否达到 所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状态。
21、 一种小区覆盖增强模式的指示方法, 其特征在于, 包括:
基站向终端发送系统信息, 所述系统信息用于向所述终端指示所述基站 覆盖的小区是否支持覆盖增强; 其中, 所述系统信息包括主系统信息块 MIB 和 /或系统信息块 SIB。
22、 根据权利要求 21所述的方法, 其特征在于, 所述系统信息为第一系 统信息, 且所述第一系统信息包括覆盖增强模式指示信息, 所述覆盖增强模 式指示信息用于向所述终端指示所述基站覆盖的小区是否支持覆盖增强; 则 所述基站向终端发送系统信息, 包括:
所述基站在至少一个第一周期的第一时频资源上向所述终端发送所述第 一系统信息, 以使所述终端根据所述覆盖增强模式指示信息获知所述基站覆 盖的小区是否支持覆盖增强。
23、 根据权利要求 22所述的方法, 其特征在于, 若所述第一系统信息为 SIB, 则所述覆盖增强模式指示信息为所述 SIB中的指示比特或 SIBX的调度 信息; 其中, 所述 SIBX为覆盖增强的公共无线资源配置信息块。
24、 根据权利要求 21所述的方法, 其特征在于, 所述系统信息为第二系 统信息, 则所述基站向终端发送系统信息, 包括:
所述基站在至少一个第二周期内的第二时频资源向所述终端发送第二系 统信息, 以使所述终端根据所述第二系统信息获知所述基站覆盖的小区支持 覆盖增强。
25、 根据权利要求 24所述的方法, 其特征在于, 所述基站在至少一个第 二周期内的第二时频资源向所述终端发送第二系统信息, 具体包括:
所述基站连续两次发送所述第二系统信息的时间间隔不大于第一预设时 间段。
26、 根据权利要求 25所述的方法, 其特征在于, 所述基站在至少一个第 二周期内的第二时频资源向所述终端发送第二系统信息之前, 还包括:
所述基站与所述终端协商发送所述第二系统信息的至少一个第二周期。
27、 根据权利要求 21-26任一项所述的方法, 其特征在于, 所述方法还 包括:
所述基站向所述终端发送第一寻呼消息; 其中, 所述第一寻呼消息包括 覆盖增强状态指示信息, 用于向所述终端指示所述基站覆盖的小区当前的覆 盖增强状态。
28、 根据权利要求 21-26任一项所述的方法, 其特征在于, 所述系统信 息包括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所 述基站覆盖的小区当前的覆盖增强状态发生变化和 /或所述系统覆盖增强模 式无线资源公共信息参数发生变化, 则所述方法还包括:
所述基站向所述终端发送第二寻呼消息; 其中, 所述第二寻呼消息用于 向所述终端指示所述基站覆盖的小区当前的覆盖增强状态发生变化和 /或所 述系统覆盖增强模式无线资源公共信息参数发生变化, 以使所述终端重新获 取新的系统信息, 并根据所述新的系统信息获知变化后的所述基站覆盖的小 区的覆盖增强状态和 /或所述系统覆盖增强模式无线资源公共信息参数。
29、 根据权利要求 21-26任一项所述的方法, 其特征在于, 所述系统信 息包括覆盖增强状态指示信息和覆盖增强模式无线资源公共信息参数, 若所 述基站覆盖的小区当前的覆盖增强状态发生变化, 则所述方法还包括:
所述基站向所述终端发送第三寻呼消息; 所述第三寻呼消息携带所述覆 盖增强状态指示信息, 以使所述终端根据所述第三寻呼消息中的覆盖增强状 态指示信息获知变化后的所述基站覆盖的小区的覆盖增强状态。
30、 根据权利要求 21所述的方法, 其特征在于, 所述系统信息包括覆盖 增强模式所使用的资源数量和所述终端尝试接入所述基站覆盖的小区的最大 接入次数, 以使所述终端根据所述接入所述基站覆盖的小区的次数是否达到 所述最大接入次数判断所述基站覆盖的小区当前的覆盖增强状态。
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EP3091806A1 (en) 2016-11-09
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