WO2015018358A1 - Procédé et dispositif de communications - Google Patents

Procédé et dispositif de communications Download PDF

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Publication number
WO2015018358A1
WO2015018358A1 PCT/CN2014/083972 CN2014083972W WO2015018358A1 WO 2015018358 A1 WO2015018358 A1 WO 2015018358A1 CN 2014083972 W CN2014083972 W CN 2014083972W WO 2015018358 A1 WO2015018358 A1 WO 2015018358A1
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WO
WIPO (PCT)
Prior art keywords
special subframe
subframe structure
frame
base station
frames
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Application number
PCT/CN2014/083972
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English (en)
Chinese (zh)
Inventor
潘学明
沈祖康
Original Assignee
电信科学技术研究院
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Publication date
Application filed by 电信科学技术研究院 filed Critical 电信科学技术研究院
Publication of WO2015018358A1 publication Critical patent/WO2015018358A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a communication method and device that can flexibly configure a special subframe structure. Background technique
  • LTE Long Term Evolution
  • TDD Time Division Duplexing
  • the first half frame is composed of 5 subframes numbered 0 to 4
  • the second half frame is composed of 5 subframes numbered 5 to 9.
  • the subframes numbered 1 and 6 are special subframes, and each special subframe is composed of a downlink pilot time slot (DwPTS), a guard interval (GP), and an uplink pilot time slot (UpPTS).
  • DwPTS downlink pilot time slot
  • GP guard interval
  • UpPTS uplink pilot time slot
  • Table 1 the 3GPP TS 36.211 protocol specifies the configuration of different special subframe structures.
  • the number in the Config column indicates the number of the special subframe configuration.
  • the normal (normal) cyclic prefix (CP) and the extended (extended) CP correspond to the column.
  • the digital representation of the slot contains orthogonal frequency division multiplexing (Orthogonal).
  • Frequency Division Multiplexing (OFDM) is the number of symbols.
  • the configuration of the special subframe structure in the LTE-TDD system is notified to the terminal by the system broadcast, and all the radio frames in the cell are configured according to the special subframe structure.
  • Table 1 TDD special subframe configuration table (number of OFDM symbols)
  • the embodiment of the invention provides a communication method and device to solve the problem that the configuration of the special subframe structure in the prior art is not flexible.
  • a communication method on a base station side includes:
  • the at least two special subframe structures are configured.
  • the guard interval length of the at least one special subframe structure is different from the guard interval length of the remaining special subframe structures, and the at least two special types are configured.
  • the subframe structure is configured in different radio frames or fields;
  • the configuration information of the foregoing at least two special subframe structures is sent to the terminal, so that the base station can configure different special subframes for different radio frames or fields according to communication requirements according to the method provided in the embodiment of the present invention.
  • the structure improves the flexibility of the special sub-frame structure configuration.
  • a special subframe structure may be configured for a radio frame or a field that needs to perform air interface monitoring between base stations and a radio frame or a field that does not need to perform air interface monitoring between base stations.
  • the GP length of the special subframe structure used by the radio frame or the half frame of the air interface monitoring is larger than the base length.
  • the base station performs the inter-base station air interface monitoring, it needs to configure a relatively long GP to be orthogonal in the GP. Air interface monitoring on the frequency division multiplexing symbol. The inter-base station air interface monitoring is performed periodically.
  • the radio frame or field that needs to perform air interface monitoring between the base stations and the radio frame or the half frame that does not need to perform air interface monitoring between the base stations are configured with different special subframe structures, so that the base stations need to be configured.
  • air interface monitoring a longer GP is used, and a shorter GP transmission signal is used when no air interface monitoring is required between base stations, thereby improving system efficiency and reducing system overhead.
  • the special subframe structure can be either static or semi-statically configured or dynamically configured.
  • the configuration information of the at least two special subframe structures is sent to the terminal by using a system broadcast message.
  • the system broadcast message further carries information of a radio frame or a field in which some or all of the special subframe structures in the at least two special subframe structures are located.
  • the manner in which the system broadcast message carries information of a radio frame or a field includes, but is not limited to, the following two methods:
  • the L special special subframe structure is configured, where L is a positive integer not less than 2. Then, in the system broadcast message, information of a radio frame or a field in which the L-1 special subframe structure is located is carried.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, and the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the at least two special subframe structures are dynamically configured, before the special subframe is sent, Sending signaling to the terminal, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes.
  • the configuration information of the at least two special subframe structures described above is sent to the terminal.
  • the signaling may be physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the physical layer control signaling may be specifically sent to the terminal in the first subframe of the radio frame or the field.
  • the embodiment of the invention provides a terminal side communication method, including:
  • At least two special subframe structures Receiving configuration information of at least two special subframe structures sent by the base station, where the guard interval length of the at least one special subframe structure in the configured special subframe structure is different from the guard interval length of the remaining special subframe structures, and
  • the at least two special subframe structures are configured in different radio frames or fields; determining a special subframe structure used by different radio frames or fields according to the received configuration information, to perform communication by the station.
  • the terminal may learn a special subframe structure configured for different radio frames or fields to communicate with the base station. .
  • the foregoing at least two special subframe structures may be: a special subframe structure used by a base station to perform radio frame or field interception between base stations, and a radio frame or a field in which the base station does not need to perform air interface monitoring between base stations.
  • the GP length of the special subframe structure used for the radio frame or the half frame of the inter-base station air interface monitoring is larger than that of the method for performing the inter-base station air interface monitoring according to any of the foregoing terminal side methods, and the special subframe structure is configured on the base station side.
  • Different ways, the manner in which the terminal receives the configuration information of the special subframe structure is also different.
  • the terminal receives the configuration information of the at least two special subframe structures sent by the base station by using the system broadcast message, specifically: the terminal receives the system broadcast message sent by the base station, and the system
  • the broadcast message carries configuration information of the at least two special subframe structures.
  • the system broadcast message further carries the at least two special subframe structures. The information of the radio frame or field in which part or all of the special subframe structure is located.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, and the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the implementation of the special subframe structure used by different radio frames or fields according to the received configuration information may be: according to the N corresponding to the special subframe structure and determining the radio frame or half where the special subframe structure is located. The number of the frame; determining the special subframe structure of the radio frame or field in which the special subframe structure is located according to the configuration information of the special subframe structure. If the radio frame or field information of the special subframe structure carried in the system broadcast message is only N, it is an agreed value.
  • the special subframe structure used by the radio frame or the field where each special subframe structure is located is determined according to the foregoing processing procedure. . If the system broadcast message carries the information of the radio frame or the field in which the special sub-frame structure is located, it may be determined according to the foregoing process that the radio broadcast message used by the radio frame or the half frame carries the base station and needs to perform the inter-base station air interface. The configuration information of another special subframe structure of the received radio frame or the message in which the field is located determines the special subframe structure used by the remaining radio frames or fields.
  • the receiving configuration information of the at least two special subframe structures sent by the base station may be: receiving the signaling sent by the base station before receiving the special subframe, where the signaling carries Configuration information of a special subframe structure used by a current radio frame, a current field, a group of radio frames, or a group of fields.
  • the signaling may be physical layer control signaling and media access control. Signaling or radio resource control protocol signaling, etc.
  • the signaling is physical layer control signaling, specifically, the physical layer control signaling sent by the base station is received on the first subframe of the radio frame or the field. In this way, configuration information of various special subframe structures transmitted by the base station is received.
  • the embodiment of the present invention further provides a base station, including: a special subframe configuration module, configured to configure at least two special subframe structures, and at least one special type in the configured special subframe structure.
  • the guard interval length of the subframe structure is different from the guard interval length of the remaining special subframe structures, and the at least two special subframe structures are configured in different radio frames or fields;
  • a configuration information sending module configured to send configuration information of the at least two special subframe structures to the terminal, to communicate with the terminal by using the special subframe structure in a radio frame or a field in which the configured special subframe structure is located .
  • the base station provided by the embodiment of the present invention can configure different special subframe structures for different radio frames or fields according to communication requirements, and improve the flexibility of special subframe configuration.
  • the special subframe configuration module is specifically configured to:
  • a special subframe structure is configured for a radio frame or a field that requires inter-base station air interface monitoring, and a radio frame or a field frame that does not need to perform air interface monitoring between base stations, and a special radio frame or a field used for inter-base station air interface monitoring is required.
  • the GP length of the subframe structure is larger than the GP length of the special subframe structure used by the radio frame or field that does not require inter-base station air interface monitoring.
  • the base station Since the base station performs the air interface monitoring between the base stations, it is necessary to configure a relatively long GP to perform air interface monitoring on the orthogonal frequency division multiplexing symbols in the GP.
  • the air interface monitoring between the base stations is performed periodically, and the base station needs to perform air interface by configuring different special subframe structures for the radio frames or fields that need to perform air interface monitoring between the base stations and the radio frames or fields that do not need to perform air interface monitoring between the base stations.
  • When listening, use a longer GP use a shorter GP to transmit signals without air interface monitoring, which improves system efficiency and reduces system overhead.
  • the special subframe structure may be static or semi-statically configured or dynamically configured. If the at least two special subframe structures are static or semi-statically configured, the configuration information sends the mode configuration information, and the system broadcast message further carries part or all of the special subframe structures in the at least two special subframe structures. The information of the radio frame or field in which it is located.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, where N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the configuration information sending module is specifically configured to:
  • the signaling Before sending the special subframe, sending signaling to the terminal, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes, where The signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the configuration information sending module may be specifically configured to: send the physical layer control signaling to the terminal in a first subframe of a radio frame or a field.
  • the present invention further provides a terminal, including:
  • the configuration information receiving module is configured to receive configuration information of at least two special subframe structures sent by the base station, and protect the length of the guard interval of the at least one special subframe structure and the rest of the special subframe structure in the configured special subframe structure
  • the interval lengths are different, and the at least two special subframe structures are configured in different radio frames or fields;
  • a special subframe structure determining module configured to determine, according to the received configuration information, a special subframe structure used by different radio frames or fields, so that the special subframe is used in a radio frame or a field in which the configured special subframe structure is located
  • the frame structure is in communication with the base station.
  • the terminal after the base station configures different special subframe structures for different radio frames or fields, the terminal may learn the special subframe structure configured for different radio frames or fields, It communicates with the base station.
  • the at least two special subframe structures include:
  • the special subframe structure used by the radio station or the field in which the base station needs to perform air interface monitoring between the base stations, and the special subframe structure used by the radio station or the subframe in which the base station does not need to perform air interface monitoring between the base stations needs to be performed.
  • the GP length of the special subframe structure used by the radio frame or the half frame monitored by the air interface between the base stations is larger than the GP length of the special subframe structure used by the radio frame or the field frame that does not need to perform air interface monitoring between the base stations.
  • the manner in which the special subframe structure is configured on the base station side is different, and the manner in which the terminal receives the configuration information of the special subframe structure is also different.
  • the configuration information receiving module is specifically configured to:
  • system broadcast message carries configuration information of the at least two special subframe structures
  • system broadcast message further carries a part of the at least two special subframe structures Or the information of the radio frame or field in which all special subframe structures are located.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, and the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the special subframe structure determining module is specifically configured to:
  • N corresponding to the special subframe structure and the number of the radio frame or the field corresponding to the special subframe structure, if the radio frame or the field information of the special subframe structure carried in the system broadcast message is only N , is the agreed value;
  • the configuration information receiving module may specifically use In:
  • the signaling Before receiving the special subframe, receiving signaling sent by the base station, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes,
  • the signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the configuration information receiving module may be specifically configured to:
  • the physical layer control signal transmitted by the base station is received on a first subframe of a radio frame or a field.
  • the embodiment of the present invention further provides a base station, including: a transceiver, a processor, and a memory.
  • the processor is configured with one or more executable programs, and the one or more executable programs are configured to perform the following methods: configuring at least two special subframe structures, in the configured special subframe structure, at least The guard interval length of a special subframe structure is different from the guard interval length of the remaining special subframe structures, and the at least two special subframe structures are configured in different radio frames or fields;
  • the transceiver is configured to send configuration information of the at least two special subframe structures to the terminal, where the memory is used to store one or more executable programs, and is used to configure the processor.
  • the base station provided by the embodiment of the present invention can configure different special subframe structures for different radio frames or fields according to communication requirements, thereby improving the flexibility of special subframe configuration.
  • the embodiment of the present invention further provides a terminal, including: a transceiver, a processor, and a memory, based on the same inventive concept as the method.
  • the transceiver is configured to receive configuration information of at least two special subframe structures sent by the base station, and the guard interval length of the at least one special subframe structure and the remaining special subframe structures in the configured special subframe structure
  • the guard interval lengths are different, and the at least two special subframe structures are configured in different radio frames or fields;
  • the processor is configured with one or more executable programs, and the one or more executable programs are configured to: determine, according to the received configuration information, different radio frames or fields used by the processor Special subframe structure;
  • the memory is configured to store one or more executable programs that are used to configure the processor.
  • the terminal may learn a special subframe structure configured for different radio frames or fields to communicate with the base station. .
  • FIG. 1 is a schematic diagram of a method of a base station side according to an embodiment of the present disclosure
  • FIG. 2 is a schematic diagram of a method of a terminal side according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of an air interface monitoring architecture according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention. detailed description
  • the base station configures at least two special subframe structures and notifies the terminal.
  • the GP length of at least one special subframe structure in the special subframe structure configured by the base station The GP lengths of other special subframe structures are different, and various special subframe structures are configured in different radio frames or fields.
  • the base station can configure different special subframe structures for different radio frames or fields according to communication requirements, thereby improving the flexibility of special subframe configuration.
  • the special subframe structure of the embodiment of the present invention may be a special subframe structure specified in the existing protocol shown in Table 1, or a special subframe structure configured by the base station.
  • Configuration information of the special subframe structure It may be a specific parameter of the special subframe structure, for example, the length information of each of DwPTS, GP, and UpPTS, or the number of the special subframe structure in Table 1, or other can be determined. Information about the special subframe structure.
  • the base station in the embodiment of the present invention is a base station in the TDD system.
  • a base station in the TDD system For example, an evolved base station (eNB), a primary base station (MeNB), a home base station (HeNB), and the like in a TDD-LTE system.
  • eNB evolved base station
  • MeNB primary base station
  • HeNB home base station
  • the "special subframe structure is configured in a radio frame or a field" means that it can be implemented in the entire radio frame, and the base station can configure all the special subframe structures in the radio frame according to requirements, or all special
  • the subframe structure is configured in a field, and a part of the special subframes may be configured in the radio frame, and another part of the special subframes may be configured in the field.
  • an embodiment of the present invention provides a communication method on a base station side, which specifically includes the following operations:
  • the at least two special subframe structures are configured.
  • the guard interval length of the at least one special subframe structure is different from the guard interval length of the remaining special subframe structures, and the at least two special types are configured.
  • the subframe structure is configured in different radio frames or fields. Step 110: Send configuration information of the foregoing at least two special subframe structures to the terminal, so as to be configured Letter.
  • a special subframe structure may be configured for a radio frame or a field that needs to perform air interface monitoring between the base stations and a radio frame or a field that does not need to perform air interface monitoring between the base stations.
  • the GP length of the special subframe structure used for the radio frame or the half frame of the inter-base station air interface monitoring is larger than that required by the base station when performing inter-base station air interface monitoring, so that a relatively long GP needs to be configured, so as to be more in the GP.
  • Air interface monitoring is performed on the orthogonal frequency division multiplexing symbols.
  • the inter-base station air interface monitoring is performed periodically.
  • the radio frame or field that needs to perform air interface monitoring between the base stations and the radio frame or the half frame that does not need to perform air interface monitoring between the base stations are configured with different special subframe structures, so that the base stations need to be configured.
  • air interface monitoring a longer GP is used, and a shorter GP transmission signal is used when no air interface monitoring is required between base stations, thereby improving system efficiency and reducing system overhead.
  • the special subframe structure may be static or semi-statically configured or dynamically configured.
  • the base station may send configuration information of the at least two special subframe structures to the terminal by using a system broadcast message.
  • the system broadcast message further carries information of a radio frame or a field in which part or all of the special subframe structures in the at least two special subframe structures are located.
  • the L special special subframe structure is configured, where L is a positive integer not less than 2. Then, in the system broadcast message, information of a radio frame or a field in which the L-1 special subframe structure is located is carried.
  • the specific content of the information of the radio frame or the field is also various.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure.
  • the N, M and the number of the radio frame or the field in which the special subframe structure is located have the following correspondence:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, where N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the value is fixed.
  • radio frame or field information of the special subframe structure carried in the system broadcast message is only N, it is an agreed value.
  • H is not configured in a radio frame or a field with a spacing of ⁇ . That is, the repetition period of the radio frame or field in which the special subframe structure is located is .
  • the second special subframe is configured on other radio frames or fields.
  • the system broadcast message may carry only the information of the radio frame or field in which the first special subframe structure is located, that is, N, or N and ⁇ /. If the special subframe is configured on the radio frame, then N is the number of radio frames. If the special subframe is configured in the field, then according to the convention, N may be the number of radio frames or the number of half frames.
  • the system broadcast message can carry the information of the radio frame or field in which the first three special subframe structures are located.
  • the information of the radio frame or the field is N, or N and the ⁇ corresponding to the special subframe
  • the information of the radio frame or the field of the other two special subframes is relative to the radio frame or the field where the special subframe is located.
  • the information of the radio frame or the half frame where the three special subframes are located is N, or N and the corresponding corresponding subframe.
  • signaling may be sent to the terminal before the special subframe is sent, where the signaling carries the current radio frame, the current field, a group of radio frames, or a group of subframes.
  • Configuration information for the special subframe structure used. Sending at least two of the above to the terminal in this way Configuration information of the special subframe structure.
  • the signaling may be physical layer control signaling (eg, PDCCH, EPDCCH, etc.), medium access control (MAC) signaling, or radio resource control protocol (RRC) signaling, and the like.
  • the physical layer control signaling may be specifically sent to the terminal in the first subframe of the radio frame or the field.
  • the signaling is sent to the terminal, where the signaling carries a special subframe structure used by the current radio frame in which the radio frame is located. , or configuration information of a special subframe structure used by a set of radio frames.
  • the set of wireless frames may be a current radio frame including the signaling and a plurality of subsequent radio frames that are consecutive or discontinuous, or may be a plurality of radio frames that are consecutive or discontinuous after the current subframe in which the signaling is located.
  • this set of frames has different radio frames.
  • FIG. 2 is a schematic diagram of a terminal side communication method according to an embodiment of the present invention, which specifically includes the following operations:
  • Step 200 Receive configuration information of at least two special subframe structures sent by the base station, where the guard interval length of at least one special subframe structure in the configured special subframe structure is different from the guard interval length of the remaining special subframe structures. And the at least two special subframe structures are configured in different radio frames or fields.
  • Step 210 Determine, according to the received configuration information, a special subframe structure used by different radio frames or fields, so that the radio frame or a field in which the configured special subframe structure is used is performed with the base station by using the special subframe structure. Communication.
  • the terminal may learn a special subframe structure configured for different radio frames or fields to communicate with the base station. .
  • the manner in which the special subframe structure is configured on the base station side is different, and the terminal receives the special sub-sub
  • the manner in which the frame structure is configured is also different.
  • the terminal receives the configuration information of the at least two special subframe structures sent by the base station, where the terminal receives the system broadcast message sent by the base station, where the system broadcasts the message.
  • the system broadcast message further carries information of a radio frame or a field in which part or all of the special subframe structures in the at least two special subframe structures are located.
  • the specific content of the information of the radio frame or the field is also various. For details, refer to the description of the method embodiment of the base station side.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, where the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer and takes a value. fixed.
  • the implementation of the special subframe structure used by different radio frames or fields according to the received configuration information may be: according to the N corresponding to the special subframe structure and determining the radio frame or half where the special subframe structure is located. The number of the frame; determining the special subframe structure of the radio frame or field in which the special subframe structure is located according to the configuration information of the special subframe structure. If the radio frame or field information of the special subframe structure carried in the system broadcast message is only N, it is an agreed value.
  • the special subframe structure used by the radio frame or the field where each special subframe structure is located is determined according to the foregoing processing procedure. . If the system broadcast message carries the information of the radio frame or the half frame where the special subframe structure is located, the special processing used by the radio frame or the field may be determined according to the foregoing processing procedure.
  • the system broadcast message carries configuration information of two special subframe structures and information of a radio frame or a field in which one of the special subframe structures is located, first determine a special subframe structure used by the radio frames or fields; Then, according to the received configuration information of another special subframe structure, the special subframe structure used by the remaining radio frames or fields is determined.
  • the system broadcast message carries configuration information of four special subframe structures and information of radio frames or fields in which three special subframe structures are located, and the radio frame or half where the three special subframe structures are located In the information of the frame, only the information of the radio frame or the field in which the special subframe structure is located is the information of the radio frame or the field in which the N corresponding to the special subframe and the other two special subframe structures are located.
  • the relative position of the radio frame or field in which the sub-frame structure is located. Then, the special subframe structure is first determined, and then two other special subframe structures are determined according to the relative position information, and finally the fourth special subframe structure is determined according to the configuration information of the fourth special subframe structure.
  • the receiving configuration information of the at least two special subframe structures sent by the base station may be: receiving the signaling sent by the base station before receiving the special subframe, where the signaling carries Configuration information of a special subframe structure used by a current radio frame, a current field, a group of radio frames, or a group of fields.
  • the signaling may be physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the signaling is physical layer control signaling, specifically, the physical layer control signaling sent by the base station is received on the first subframe of the radio frame or the field. In this way, configuration information of various special subframe structures transmitted by the base station is received.
  • the information carried in the signaling reference may be made to the above-described base station side method embodiment.
  • An existing inter-cell clock synchronization scheme in an LTE-TDD system is an air interface synchronization scheme for inter-network monitoring.
  • the primary synchronization source cell with the air interface synchronization (the cell under the MeNB in FIG. 3) configures a special subframe with a shorter GP (as shown in FIG. 3, the MeNB is configured as a special subframe configuration 4).
  • the area directly acquires the time-synchronized target cell to be synchronized (the cell in HeNB1 in FIG. 3), and configures a special subframe with a relatively large GP (as shown in FIG.
  • HeNB1 is configured as a special subframe configuration 1).
  • the target cell to be synchronized may detect a reference signal such as a CRS of the primary synchronization source cell in the GP of the special subframe relative to the first OFDM symbols that are vacant in the synchronization source cell to obtain time synchronization.
  • the target synchronization cell to be synchronized (the cell under HeNB2 in FIG. 3) that is time-synchronized cannot be directly obtained from the primary synchronization source cell, and a special subframe with a relatively large GP is configured (as shown in FIG. 3, the special configuration of the HeNB2 is shown.
  • the subframe configuration 0 such that the target cell to be synchronized can detect a reference signal such as a CRS with respect to the first few OFDM symbols that are vacant with respect to the synchronized cell within the GP of its special subframe to obtain synchronization.
  • a reference signal such as a CRS
  • the GP to be synchronized needs to configure a longer GP to receive the downlink signal sent by the synchronization source base station to obtain synchronization. Since the special subframe structure in the existing LTE-TDD frame structure is configured, all the radio frames use the same GP length, and in fact, the base station air interface synchronization does not need to be synchronized by the base station to monitor the synchronization source in each radio frame. The downlink signal of the base station.
  • the base station to be synchronized is required to allocate a longer GP time slot in all radio frames, since the GP time slot cannot transmit physical signals, so significant Increase system overhead and reduce system efficiency.
  • the HeNB1 in FIG. 3 is used as an example, and the method provided by the embodiment of the present invention is used.
  • the HeNB1 configures a special subframe structure for a radio frame that needs to perform air interface monitoring between the base stations and a radio frame that does not need to perform air interface monitoring between the base stations.
  • the GP length of the special subframe structure used by the radio frame that needs to perform air interface monitoring between the base stations is larger than the GP length of the special subframe structure used by the radio frame that does not need to perform air interface monitoring between the base stations.
  • a special subframe structure is configured for each of the radio frames that need to perform air interface monitoring between the base stations and the radio frames that do not need to perform air interface monitoring between the base stations. Then, it is necessary to perform air interface monitoring between base stations.
  • a plurality of special subframe structures may be respectively configured for the radio frames that need to perform air interface monitoring between the base stations and the radio frames that do not need to perform air interface monitoring between the base stations.
  • the base station Since the base station performs the air interface monitoring between the base stations, it needs to configure a relatively long GP to be in the GP. Air interface monitoring is performed on the orthogonal frequency division multiplexing symbols in the excess. The air interface monitoring between the base stations is performed periodically, and the base station needs to perform air interface by configuring different special subframe structures for the radio frames or fields that need to perform air interface monitoring between the base stations and the radio frames or fields that do not need to perform air interface monitoring between the base stations. When listening, use a longer GP, use a shorter GP to transmit signals without air interface monitoring, which improves system efficiency and reduces system overhead.
  • the static or semi-static configuration requires a special subframe structure for the radio frame for inter-base station air interface monitoring, and a special subframe structure 2 for the radio frame that does not need to perform inter-base station air interface monitoring, and every N radio frames An air interface monitoring between base stations.
  • the system frame number S of the radio frame is the number of the system frame of the radio frame, and N is the repetition period of the radio frame or the field where the special sub-frame structure is located, which is 0 or a positive integer, and the value is fixed.
  • the HeNB1 transmits the configuration information of the special subframe structure 1, the configuration information of the special subframe structure 2, and the value of N in the system broadcast message.
  • the value is also carried in the system broadcast message. If the system broadcast message does not carry the value of M, the value pre-agreed with the terminal.
  • a new field may be defined in the system broadcast message (for example, system information block SIB1) for carrying all the above information.
  • the field that carries the special subframe structure configuration defined in the original protocol can no longer carry the configuration information of the special subframe structure.
  • the field that carries the configuration of the special subframe structure defined in the original protocol may further carry the configuration information of the special subframe structure, and the special subframe structure corresponding to the field is referred to as the special subframe structure 3.
  • the special subframe structure 3 is used to communicate with the terminal.
  • a special subframe structure 1 is used, and the rest of the radio frames use a special subframe structure 2.
  • the field carrying the special subframe structure configuration defined in the original protocol carries the configuration information of the special subframe structure 2. In this case, when the inter-base station air interface monitoring is required, the special subframe structure 1 is used, and the rest of the radio frames use the special subframe structure 2.
  • the terminal receives the system broadcast message sent by the HeNB1, and obtains the configuration information of the special subframe structure. And other information.
  • the terminal obtains the information from the newly defined field, determines the SFN of the radio frame according to N and determines the special subframe structure 1 used by the radio frames corresponding to the SFN according to the configuration information of the special subframe structure 1. If the field that carries the special subframe structure configuration defined in the original protocol also carries the configuration information of the special subframe structure 3, determine the special subframe structure used by the radio frame corresponding to the mobility measurement process, and determine the remaining radio frame.
  • the special subframe structure used is two; if the special protocol defined in the original protocol carries the special subframe structure II.
  • SFN system frame number
  • the system frame number S of the radio frame is the number of the system frame of the radio frame, and N is the repetition period of the radio frame or field in which the special sub-frame structure is located, where M is 0 or a positive integer, and the value is fixed.
  • the HeNB1 Before transmitting the special subframe on the radio frame, the HeNB1 sends signaling to the terminal, where the signaling carries the special subframe structure used by the current radio frame in which the radio frame is located, or carries a special subframe structure used by the radio frame.
  • the set of radio frames may be a current radio frame including the signaling and a plurality of subsequent radio frames that are consecutive or discontinuous, or may be a plurality of radio frames that are consecutive or discontinuous after the current subframe in which the signaling is located.
  • the set of radio frames may be radio frames with the same special subframe structure used, or may be radio frames with different special subframe structures.
  • the HeNB1 sends physical layer control signaling to the terminal in each of the first subframes of the radio frame that needs to perform air interface monitoring between the base stations, where the physical layer control signaling carries the special subframe.
  • the physical layer control signaling sent in the first subframe of the first radio frame that needs to perform the inter-base station air interface monitoring carries the configuration information of the special subframe configuration 1 and the value of N, and optionally, the value carried .
  • the HeNB1 does not need to perform radio frame monitoring between the base stations.
  • the physical layer control signaling is sent to the terminal, where the physical layer control signaling carries the configuration information of the special subframe used by the radio frame or a group of radio frames; of course, if the dynamic configuration is not required
  • the special subframe structure of the radio frame can also send the configuration information of the special subframe structure 2 through the system broadcast message. It can be seen that the dynamic special subframe structure configuration and the pre-special subframe structure configuration can be combined. If the field of the special subframe structure configured in the original protocol still carries the configuration information of the special subframe structure, the HeNB1 may carry the configuration information of the special subframe structure 2 in the field.
  • the terminal Before receiving the special subframe, the terminal receives the foregoing signaling sent by the HeNB1, and obtains configuration information of the special subframe structure.
  • the terminal determines the special subframe structure used by the radio frame. If the field of the special subframe structure configured in the original protocol also carries the configuration information of the special subframe structure, the configuration information of the special subframe structure carried in the field is used to determine the radio frame corresponding to the mobility measurement process. Special subframe structure.
  • the embodiment of the present invention further provides a base station and a terminal, and the specific content of the base station and the terminal may be implemented by referring to the foregoing method, and details are not described herein again.
  • a base station is provided in the embodiment of the present invention, where the base station includes:
  • the special subframe configuration module 401 is configured to configure at least two special subframe structures.
  • the guard interval length of at least one special subframe structure and the guard interval length of the remaining special subframe structures are not The same, and the at least two special subframe structures are configured in different radio frames or fields;
  • the configuration information sending module 402 is configured to send configuration information of the at least two special subframe structures to the terminal, so that the radio frame or a field in which the configured special subframe structure is used is performed with the terminal by using the special subframe structure. Communication.
  • the base station provided by the embodiment of the present invention can configure different special subframe structures for different radio frames or fields according to communication requirements, and improve the flexibility of special subframe configuration.
  • the special subframe configuration module 401 is specifically configured to:
  • radio frames or fields that need to perform air interface monitoring between base stations, and do not need to perform inter-base station space.
  • the radio frame or the half frame of the port is configured with a special subframe structure, and the GP length of the special subframe structure used for the radio frame or the half frame of the inter-base station air interface monitoring is larger than the radio frame or the half frame that does not need to perform the inter-base station air interface monitoring.
  • the base station Since the base station performs the air interface monitoring between the base stations, it is necessary to configure a relatively long GP to perform air interface monitoring on the orthogonal frequency division multiplexing symbols in the GP.
  • the air interface monitoring between the base stations is performed periodically, and the base station needs to perform air interface by configuring different special subframe structures for the radio frames or fields that need to perform air interface monitoring between the base stations and the radio frames or fields that do not need to perform air interface monitoring between the base stations.
  • When listening, use a longer GP use a shorter GP to transmit signals without air interface monitoring, which improves system efficiency and reduces system overhead.
  • the special subframe structure may be static or semi-statically configured or dynamically configured.
  • the configuration information sending module 402 is specifically configured to: send, by using a system broadcast message, configuration information of the at least two special subframe structures to the terminal, where The system broadcast message further carries information of a radio frame or a field in which part or all of the special subframe structures in the at least two special subframe structures are located.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, where the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer and takes a value. fixed.
  • the configuration information sending module 402 is specifically configured to:
  • the signaling Before sending the special subframe, sending signaling to the terminal, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes, where The signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling. If the signaling is physical layer control signaling, the configuration information sending module 402 may be specifically configured to: send the physical layer control signaling to the terminal in a first subframe of a radio frame or a field.
  • the embodiment of the present invention as shown in FIG. 5 further provides a terminal, where the terminal includes:
  • the configuration information receiving module 501 is configured to receive configuration information of at least two special subframe structures sent by the base station, and the guard interval length of the at least one special subframe structure and the rest of the special subframe structure in the configured special subframe structure
  • the guard interval lengths are different, and the at least two special subframe structures are configured in different radio frames or fields;
  • the special subframe structure determining module 502 is configured to determine, according to the received configuration information, a special subframe structure used by different radio frames or fields, so that the special frame is used in a radio frame or a field in which the configured special subframe structure is located.
  • the subframe structure is in communication with the base station.
  • the terminal may learn a special subframe structure configured for different radio frames or fields to communicate with the base station. .
  • the at least two special subframe structures include:
  • the special subframe structure used by the radio station or the field in which the base station needs to perform air interface monitoring between the base stations, and the special subframe structure used by the radio station or the subframe in which the base station does not need to perform air interface monitoring between the base stations needs to be performed.
  • the GP length of the special subframe structure used by the radio frame or the half frame monitored by the air interface between the base stations is larger than the GP length of the special subframe structure used by the radio frame or the field frame that does not need to perform air interface monitoring between the base stations.
  • the manner in which the special subframe structure is configured on the base station side is different, and the manner in which the terminal receives the configuration information of the special subframe structure is also different.
  • the configuration information receiving module 501 is specifically configured to:
  • system broadcast message carries configuration information of the at least two special subframe structures
  • system broadcast message further carries a part of the at least two special subframe structures Or the information of the radio frame or field in which all special subframe structures are located.
  • the radio frame or the field of the special subframe structure carried in the system broadcast message is located.
  • the information is N corresponding to the special subframe structure or N corresponding to the special subframe structure, and the ⁇ , ⁇ and the number of the radio frame or the field where the special subframe structure is located have the following correspondence:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, where the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer and takes a value. fixed.
  • the special subframe structure determining module 502 is specifically configured to:
  • N corresponding to the special subframe structure and the number of the radio frame or the field corresponding to the special subframe structure, if the radio frame or the field information of the special subframe structure carried in the system broadcast message is only N , is the agreed value;
  • the configuration information receiving module 501 can be specifically used to:
  • the signaling Before receiving the special subframe, receiving signaling sent by the base station, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes,
  • the signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the configuration information receiving module 501 may be specifically configured to:
  • the physical layer control signal transmitted by the base station is received on a first subframe of a radio frame or a field.
  • the embodiment of the present invention further provides a base station as shown in FIG. 6, which includes:
  • the processor 602 is configured with one or more executable programs, where the one or more executable programs are used to perform the following methods: configuring at least two special subframe structures, in a configured special subframe structure, The guard interval length of at least one special subframe structure and the guard interval of the remaining special subframe structures The lengths are different, and the at least two special subframe structures are configured in different radio frames or fields; the transceiver is configured to send configuration information of the at least two special subframe structures to the terminal;
  • the memory is used to store one or more executable programs that are used to configure the processor 602.
  • the processor 602 is specifically configured to:
  • a special subframe structure is configured for a radio frame or a field that requires inter-base station air interface monitoring, and a radio frame or a field frame that does not need to perform air interface monitoring between base stations, and a special radio frame or a field used for inter-base station air interface monitoring is required.
  • the guard interval length of the subframe structure is greater than the air interface monitoring between the base stations.
  • the at least two special subframe structures are configured in a static or semi-static manner, and the transceiver 601 is specifically configured to:
  • the system broadcast message further carries information of a radio frame or a field in which part or all of the special subframe structures in the at least two special subframe structures are located.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M has the following correspondence with the number of the radio frame or field in which the special subframe structure is located:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, and the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the at least two special subframe structures are dynamically configured, and the transceiver 601 is specifically configured to:
  • the signaling Before sending the special subframe, sending signaling to the terminal, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes, where The signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the transceiver 601 is specifically configured to:
  • the base station can configure different special subframe structures for different radio frames or fields according to communication requirements, and improve the flexibility of special subframe configuration.
  • the embodiment of the present invention further provides a terminal, and the terminal shown in FIG. 7 includes:
  • the transceiver 701 is configured to receive configuration information of at least two special subframe structures sent by the base station, and a guard interval length of the at least one special subframe structure and the remaining special subframe structures in the configured special subframe structure.
  • the guard interval lengths are different, and the at least two special subframe structures are configured in different radio frames or fields;
  • the processor 702 is configured with one or more executable programs, and the one or more executable programs are configured to: determine, according to the received configuration information, a special sub-frame used by different radio frames or fields Frame structure
  • the memory 703 is configured to store one or more executable programs, and is used to configure the processor
  • the transceiver 701 is specifically configured to:
  • system broadcast message carries configuration information of the at least two special subframe structures
  • system broadcast message further carries a part of the at least two special subframe structures Or the information of the radio frame or field in which all special subframe structures are located.
  • the at least two special subframe structures include:
  • the guard interval length of the special subframe structure used by the radio frame or the half frame monitored by the air interface between the base stations is larger than the guard interval length of the special subframe structure used for the radio frame or the half frame that does not need to perform air interface monitoring between the base stations.
  • the information of the radio frame or the field in which the special subframe structure is carried in the system broadcast message is the N corresponding to the special subframe structure or the N corresponding to the special subframe structure, and the N, M and the number of the radio frame or field in which the special subframe structure is located have the following correspondence:
  • the FN is a number of a radio frame or a field in which the special subframe structure is located, and the N is a repetition period of a radio frame or a field in which the special sub-frame structure is located, where the value is 0 or a positive integer.
  • the processor 702 is specifically configured to:
  • N corresponding to the special subframe structure and the number of the radio frame or the field corresponding to the special subframe structure, if the radio frame or the field information of the special subframe structure carried in the system broadcast message is only N , is the agreed value;
  • the transceiver 701 is specifically configured to:
  • the signaling Before receiving the special subframe, receiving signaling sent by the base station, where the signaling carries configuration information of a special subframe structure used by the current radio frame, the current field, a group of radio frames, or a group of subframes,
  • the signaling is physical layer control signaling, media access control signaling, or radio resource control protocol signaling.
  • the transceiver 701 is specifically configured to:
  • the signaling is the physical layer control signaling, receiving the physical layer control signaling sent by the base station in a first subframe of a radio frame or a field.
  • the terminal may learn a special subframe structure configured for different radio frames or fields to communicate with the base station. .
  • the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the present invention is applicable to one or more computer usable storage media (including but not limited to disk storage, including computer usable program code,
  • the present invention is directed to a method, apparatus (system), and computer program product according to an embodiment of the present invention.
  • These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un dispositif de communications. Le procédé comprend les étapes suivantes : une station de base configure au moins deux structures de sous-trames spéciales ; dans la configuration des structures de sous-trames spéciales, la longueur de l'intervalle de garde d'au moins une des structures de sous-trames spéciales est différente de la longueur de l'intervalle de garde des autres structures de sous-trames spéciales, et lesdites deux structures de sous-trames spéciales ou plus sont configurées dans différentes trames ou demi-trames radio ; les informations de configuration d'au moins deux structures de sous-trames spéciales sont envoyées à un terminal afin d'utiliser ladite structure de sous-trame spéciale, dans la trame ou la demi-trame radio dans laquelle se trouve la structure de sous-trame, pour communiquer avec ledit terminal. Le terminal reçoit des informations de configuration, envoyées par la station de base, des deux structures de sous-trames spéciales, ou plus ; d'après les informations de configuration reçues, le terminal détermine les structures de sous-trames spéciales utilisées par différentes trames ou demi-trames radio. Dans les modes de réalisation de la présente invention, la station de base peut, en fonction d'exigences de communication, configurer différentes structures de sous-trame spéciales, améliorant ainsi la flexibilité de configuration de sous-trames spéciales.
PCT/CN2014/083972 2013-08-09 2014-08-08 Procédé et dispositif de communications WO2015018358A1 (fr)

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CN106792793B (zh) * 2016-11-11 2020-05-01 中国移动通信集团江苏有限公司 一种特殊子帧配置方法、装置及基站
CN110381583A (zh) * 2018-04-12 2019-10-25 中兴通讯股份有限公司 一种帧结构配置方法、节点

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