WO2012083814A1 - Procédé, système, et dispositif de transmission d'informations et de configuration de sous-trame - Google Patents

Procédé, système, et dispositif de transmission d'informations et de configuration de sous-trame Download PDF

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Publication number
WO2012083814A1
WO2012083814A1 PCT/CN2011/084057 CN2011084057W WO2012083814A1 WO 2012083814 A1 WO2012083814 A1 WO 2012083814A1 CN 2011084057 W CN2011084057 W CN 2011084057W WO 2012083814 A1 WO2012083814 A1 WO 2012083814A1
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WIPO (PCT)
Prior art keywords
subframe
information
transmission direction
cell
type
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PCT/CN2011/084057
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English (en)
Chinese (zh)
Inventor
潘学明
孙韶辉
秦飞
沈祖康
肖国军
丁昱
Original Assignee
大唐移动通信设备有限公司
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Publication of WO2012083814A1 publication Critical patent/WO2012083814A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Definitions

  • a time division duplex (TDD) mode refers to that the uplink and downlink use the same working frequency band to transmit uplink and downlink signals at different time intervals. There is a GP (Guard Period) between the uplink and the downlink.
  • the FDD (Frequency Division Duplex) mode refers to the use of different working bands on the uplink and downlink. It can be performed on different frequency carriers at the same time.
  • GB Guard Band
  • a radio frame has a length of 10 ms, and includes 10 subframes of a special subframe and a regular subframe. Each subframe is Lms.
  • the special subframe is divided into three subframes: DwPTS (Downlink Pilot Slot) is used to transmit PSS (Primary Synchronization Signal), PDCCH (Physical Downlink Control Channel), PHICH ( Physical HARQ Indication Channel, physical hybrid automatic request retransmission indication channel), PCFICH (Physical Control Format Indication Channel), PDSCH (Physical Downlink Shared Channel), etc.; GP is used for downlink UpPTS (Uplink Pilot Slot) is used to transmit SRS (Sounding Reference Signal), PRACH (Physical Random Access Channel), etc. .
  • the regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting an uplink/downlink control channel and service data.
  • subframes 1 and 6 In a radio frame, you can configure two special subframes (in subframes 1 and 6) or a special subframe (in subframe 1).
  • Subframe 0 and subframe 5 and DwPTS subframes in special subframes are always used for downlink transmission.
  • Subframe 2 and UpPTS subframes in special subframes are always used for uplink transmission.
  • Other subframes can be configured as needed. For uplink transmission or downlink transmission.
  • the uplink and downlink transmissions use the same frequency resource, and the uplink/downlink signals are transmitted on different subframes.
  • TDD systems including 3G TD-SCDMA (Time Division-Synchronous Code Division) Multiple Access, Time Division Synchronous Code Division Multiple Access (OFDM) systems and 4G TD-LTE systems.
  • the division of uplink and downlink subframes is static or semi-static. The usual practice is based on cell type and approximate service ratio in the network planning process. Determine the proportion of the uplink and downlink subframes and keep them unchanged. This is a relatively simple approach in the context of large coverage of macro cells, and is also more effective.
  • the cross-slots of adjacent cells may be disturbed.
  • the femto cell is used for the uplink signal reception, and then the two cells appear: the base station-base station is interfered, and the femto base station directly receives the Macro base station.
  • the downlink signal will seriously affect the shield of the femto base station receiving the uplink signal of the L-UE (Local UE, local UE).
  • the neighboring cells herein may be geographically adjacent cells (shown in Figure 1B) that use the same TDD carrier, or cells that are geographically overlapping or using adjacent TDD carriers (shown in Figure 1C).
  • the embodiments of the present invention provide a method and a device for transmitting information, which are used to solve the problem that a cell cannot acquire configuration information of a neighboring cell when the uplink and downlink traffic ratio requirements of a cell existing in the prior art are dynamically changed.
  • the embodiments of the present invention provide a method, a system, and a device for configuring a subframe, which are used to solve the problem that the neighboring area interferes coexistence when the uplink and downlink service ratio requirements of the small area in the prior art are dynamically changed.
  • the network side device determines the type information of the subframe in the radio frame configured by the local cell, where the radio frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a subframe with a variable transmission direction.
  • a fixed subframe is a subframe in which a transmission direction is fixed;
  • the network side device sends the notification information including the type information to the neighboring cell.
  • An information determining module configured to determine type information according to a subframe in a radio frame configured by the cell, where the radio frame includes a variable subframe and/or a fixed subframe, where the variable subframe is a variable transmission direction
  • a fixed subframe is a subframe in which the transmission direction is fixed;
  • the sending module is configured to send the notification information including the type information to the neighboring cell.
  • the network side device determines, according to the received notification information including the type information, each subframe in the radio frame of the current cell. a type, where the type information is determined by a subframe in a radio frame configured by a neighboring cell, where the radio frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a variable transmission direction A fixed subframe is a subframe in which the transmission direction is fixed;
  • the network side device configures a subframe in a radio frame of the local cell.
  • a processing module configured to determine, according to the received notification information that includes the type information, a type of each subframe in the radio frame of the local cell, where the type information is determined by a subframe in a radio frame configured by the neighboring cell,
  • the radio frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a subframe with a variable transmission direction, and the fixed subframe is a subframe with a fixed transmission direction;
  • the configuration module is configured to configure a subframe in a radio frame of the local cell.
  • a network side device configured to determine, according to a subframe in a radio frame configured by the cell, type information, and send the notification information that includes the type information to the neighboring cell, where the radio frame includes a variable subframe and/or a fixed subframe.
  • the variable subframe is a subframe with a variable transmission direction
  • the fixed subframe is a subframe with a fixed transmission direction;
  • the network side device that receives the notification information is configured to determine, according to the received notification information including the type information, the type of each subframe in the radio frame of the local cell, and configure the subframe in the radio frame of the local cell.
  • the embodiment of the present invention can send the notification information including the type information to the neighboring cell, so that when the service ratio of the uplink and the downlink of the cell is dynamically changed, the cell can obtain the configuration information of the neighboring cell and improve the efficiency.
  • the network side device determines the type of each subframe in the radio frame of the local cell according to the received notification information including the type information, and configures the subframe in the radio frame of the local cell, so as to be uplink and downlink in the cell.
  • the business ratio demand is dynamically changed, the neighboring area is coexisted by interference; the system performance is further improved.
  • FIG. 1A is a schematic diagram of a frame structure of the TD-LTE system
  • FIG. 1B is a schematic diagram of cross-slot interference when using the same TDD carrier
  • Figure 1C is a schematic diagram of cross-slot interference when using adjacent TDD carriers
  • FIG. 2 is a schematic structural diagram of a system for configuring a subframe according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a first network side device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a second network side device according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a method for transmitting information according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for configuring a subframe according to an embodiment of the present invention.
  • the network side device determines the type information according to the subframe in the radio frame configured by the cell, and sends the notification information including the type information to the neighboring cell, where the radio frame includes the variable subframe and/or A fixed subframe, a variable subframe is a subframe with a variable transmission direction, and a fixed subframe is a subframe with a fixed transmission direction.
  • the embodiment of the present invention can send the notification information including the type information to the neighboring cell, so that when the uplink and downlink traffic ratio requirements of the cell are dynamically changed, the cell can obtain the configuration information of the neighboring cell.
  • the network side device determines the type of each subframe in the radio frame of the local cell according to the received notification information including the type information, and configures the subframe in the radio frame of the current cell, so that the uplink and downlink services in the cell are performed.
  • the proportional demand is dynamically changed, the adjacent areas are coexisted.
  • the embodiments of the present invention can be applied to a TDD system (such as a TD-LTE system), and can also be applied to other systems that need to dynamically adjust uplink and downlink configurations of a subframe, such as a TD-SCDMA system and its subsequent evolution system, WiMAX ( Worldwide Interoperability for Microwave Access, 4 Wave Access Global Interoperability) systems and their subsequent evolution systems.
  • a TDD system such as a TD-LTE system
  • WiMAX Worldwide Interoperability for Microwave Access, 4 Wave Access Global Interoperability
  • the system for configuring a subframe in the embodiment of the present invention includes: a first network side device 10 and a second network side device 20.
  • the first network side device 10 is configured to determine, according to the subframe in the radio frame configured by the local cell, the type information, and send the notification information including the type information to the neighboring cell, where the radio frame includes the variable subframe and/or the fixed Sub-frame, a variable sub-frame is a sub-frame with a variable transmission direction, and a fixed sub-frame is a sub-frame with a fixed transmission direction.
  • a wireless frame includes a variable subframe and/or a fixed subframe indicating three cases. 1.
  • the subframes in the radio frame are all variable subframes; 2.
  • the subframes in the radio frame are all fixed subframes; 3.
  • the subframes in the radio frame have variable subframes and fixed subframes.
  • the second network side device 20 that receives the notification information is configured to determine, according to the received notification information including the type information, the type of each subframe in the radio frame of the local cell, and configure the subframe in the radio frame of the local cell.
  • the neighboring cell here is an intra-frequency neighboring cell or an inter-frequency neighboring cell; and the neighboring cell and the neighboring cell may be in a neighboring cell of the same TDD network or a different TDD network.
  • the first network side device 10 determines the type information, and several are listed below.
  • Manner 1 The first network side device 10 sets a value of a corresponding bit in a type of a fixed subframe in a type of bit length (bit bitmap), and sets a bit corresponding to the variable subframe in the type bitmap in the foregoing time length.
  • bit bitmap a type of bit length
  • the value of the bit, and the type of bitmap as the type information.
  • the type bitmap may only represent the type information of the fixed subframe in a certain length of time.
  • subframe 0 subframe 1
  • subframe 2 subframe 5
  • subframe 6 and subframe 7 are fixed subframes. "1" indicates a fixed subframe, and "0" indicates a variable subframe, as shown in Table 1:
  • the specific type bitmap is 1110011100.
  • the second network side device 20 After receiving the 1110011100, the second network side device 20 knows the type of each subframe according to the subframe corresponding to each bit in the type bitmap and the meaning of the value corresponding to each bit.
  • the type bitmap may only represent the type information of the variable subframe in a certain length of time.
  • subframe 3 subframe 4
  • subframe 8 subframe 9
  • “1" indicates a fixed subframe
  • "0" indicates a variable subframe
  • the specific type bitmap is 0001100011.
  • the subframe corresponding to each bit in the type bitmap and the meaning of the value corresponding to each bit know the type of each subframe.
  • the specific length of time can be specified in the agreement, or it can be notified by the senior management.
  • the set duration can also be updated as needed.
  • the specific type bitmap indicates which subframes, the subframes corresponding to each bit, and the meaning of each bit value can be specified in the protocol, and can also be notified by the upper layer.
  • the second network side device 10 determines, according to the correspondence between the type configuration format and the first serial number, the first serial number corresponding to the type configuration format of the fixed subframe and the variable subframe in a certain time length, and the determined A serial number is used as type information.
  • Subframe 9 Subframe 0 Subframe 1 Subframe 2 Subframe 3 Subframe 4 Subframe 5 Subframe 6 Subframe 7 Subframe 8 Subframe 9
  • subframe 3 subframe 4, subframe 8 and subframe 9 are variable subframes; subframe 0, subframe 1, subframe 2, subframe 5, sub Frame 6 and subframe 7 are fixed subframes. According to Table 3, it can be determined that the first serial number is 2.
  • the second network side device 20 after receiving the first sequence number 2, the second network side device 20 knows the type of each subframe according to Table 3.
  • the correspondence between the type configuration format and the first serial number may be specified in the protocol in advance, or may be notified by the upper layer.
  • the correspondence between the configuration format and the serial number can also be updated as needed.
  • the network interface Since it is not dynamically allocated, the network interface has already interacted with the uplink and downlink configuration information. Therefore, if a certain subframe is notified as a fixed subframe in the implementation, the transmission direction is the same as that indicated by the already notified uplink and downlink configuration information; if a certain subframe is notified as a variable subframe, the transmission direction is already notified. The meaning indicated by the uplink and downlink configuration information is irrelevant.
  • the first network side device 10 can also place the transmission direction information in the notification information.
  • the transmission direction information indicates whether each subframe is an uplink transmission or a downlink transmission.
  • the first network side device 10 may determine the transmission direction information according to the subframe in the radio frame configured by the cell.
  • the first network side device 10 determines the transmission direction information, and several are listed below.
  • the first network side device 10 sets the value of the corresponding bit in the transmission direction bitmap of the fixed subframe in a certain length of time, and sets the value of the corresponding bit in the transmission direction bitmap in the time length. And use the transmission direction bitmap as the transmission direction information.
  • subframe 2 Assume that the length of time is 10ms (ie a radio frame length).
  • the transmission direction of subframe 2, subframe 7, subframe 8, and subframe 9 is uplink. " ⁇ indicates that the transmission direction is uplink, and "0" indicates that the transmission direction is downlink, as shown in Table 4:
  • the specific transmission direction bitmap is 0010000111.
  • the second network side device 20 after receiving the 0010000111, the second network side device 20, according to each bit in the transmission direction bitmap
  • the meaning of the corresponding sub-frame and the value corresponding to each bit is known as the transmission direction of each sub-frame.
  • the specific length of time can be specified in the agreement, or it can be notified by the senior management.
  • the set duration can also be updated as needed.
  • the specific transmission direction bitmap indicates which subframes, subframes corresponding to each bit, and the meaning of each bit value can be specified in the protocol, and can also be notified by the upper layer.
  • the second network side device 10 determines the second serial number corresponding to the transmission direction configuration format of the fixed subframe and the variable subframe in a certain time length according to the correspondence between the configuration format of the transmission direction and the second serial number, and determines The second serial number is used as the transmission direction information.
  • the transmission direction of subframe 2, subframe 3, subframe 4, and subframe 7 is uplink; subframe 0, subframe 1, subframe 5, subframe 6, and sub-frame
  • the transmission direction of frame 8 and subframe 9 is downlink. According to Table 5, it can be determined that the first serial number is 3.
  • the second network side device 20 after receiving the first sequence number 3, the second network side device 20 knows the type of each subframe according to Table 5.
  • the correspondence between the type configuration format and the first serial number may be specified in the protocol in advance, or may be notified by the upper layer.
  • the correspondence between the configuration format and the serial number can also be updated as needed.
  • the first network side device 10 may send the transmission direction information and the type information through two different notification information.
  • the transmission direction information and the type information may also be placed in the same notification information.
  • the first network side device 10 sets both the transmission direction information and the type information in the same notification information, the first network side device 10 combines the transmission direction information and the type information into configuration information, and places the configuration information in the notification information. in.
  • the specific configuration information may be type bitmap+transmission direction bitmap; type bitmap+second sequence number; first sequence number + transmission direction bitmap; first sequence number + one of the second sequence numbers.
  • the specific use can be specified in the agreement; it can also be notified by the senior management.
  • the first half can be type bitmap, after The half part is the transmission direction bitmap; the first half is the transmission direction bitmap, the second half is the type bitmap; the type bitmap and the transmission direction bitmap can also be mixed together.
  • the type information and the transmission direction information of each subframe can be directly notified to the neighboring cell by using more than one bit information.
  • subframe 0, subframe 1, subframe 2, subframe 5, subframe 6 and subframe 7 are fixed subframes, subframe 3, subframe 4, and subframe.
  • 8 and subframe 9 are variable sub- ⁇ "1" for fixed subframe, "0" for variable subframe; subframe 2, subframe 7, subframe 8 and subframe 9 for transmission direction, subframe 0, sub-frame
  • the transmission direction of frame 1, subframe 3, subframe 4, subframe 5, and subframe 6 is downlink, 1" indicates that the transmission direction is uplink, and "0" indicates that the transmission direction is downlink, as shown in Table 6:
  • the specific configuration information is 00000110100000011111.
  • the second network side device 10 After receiving the 00000110100000011111, the second network side device 10 knows the type and the type of each subframe according to the meaning of the subframe corresponding to each bit in the type bitmap and the transmission direction bitmap and the value corresponding to each bit. The direction of transmission is gone.
  • the network side device may also put one or more of the following information into the notification information according to the requirement: the cell identifier of the local cell, the PLMN (Public Land Mobile Network) identifier of the local cell, and the neighboring cell. Cell identity.
  • the cell identifier of the local cell the cell identifier of the local cell
  • the PLMN Public Land Mobile Network
  • the first network side device 10 may send a notification message to the neighboring cell through a direct communication interface or an indirect communication interface.
  • a cell with an X2 connection (such as a Macro cell, a Pico 'J, a cell, etc.) can be sent using an X2 interface; a cell without an X2 interface (such as a femto cell) can use the S1 interface.
  • X2 connection such as a Macro cell, a Pico 'J, a cell, etc.
  • a cell without an X2 interface such as a femto cell
  • the second network side device 20 determines the type of each subframe in the radio frame of the local cell according to the received notification information including the type information, and then configures the subframe in the radio frame of the local cell.
  • the second network side device 20 determines whether the interference strength between the local cell and the neighboring cell that sends the notification information can be detected.
  • the intensity of the disturbance here includes but is not limited to one of the following values:
  • CQI Channel Quality Indicator
  • RSRQ Reference Signal Received Quality
  • the subframe is a variable subframe in the neighboring cell, and the second network side device 20 does not use the subframe or lowers the usage priority of the subframe.
  • the second network side device 20 may configure the unused subframe as an MBSFN (MBSFN Multicast Broadcast Single Frequency Network) subframe or an ABS (Almost Blank Subframe) or an uplink sub-frame. Frames are not scheduled for uplink.
  • MBSFN MBSFN Multicast Broadcast Single Frequency Network
  • ABS Almost Blank Subframe
  • the notification information includes the transmission direction information, and it is determined that the interference strength between the 'j, the area and the neighboring node J of the transmission notification information cannot be detected, if the subframe to be configured is a variable subframe when the neighboring cell is a variable subframe
  • the subframe type and the transmission direction that the second network side device 20 can be configured are the same as the subframe type and the transmission direction of the same subframe identifier in the neighboring cell.
  • the subframe 7 of the current cell may be configured to be the same transmission direction as the subframe 7 of the neighboring cell; and the subframe 8 of the local cell is configured to be associated with the neighboring cell.
  • Frame 8 has the same transmission direction.
  • the subframe type and the transmission direction that the second network side device 20 can configure if the subframe to be configured is a fixed subframe in the neighboring cell is determined to be incapable of detecting the interference strength between the local cell and the neighboring cell that sends the notification information.
  • the subframe type and the transmission direction are the same as those identified in the same subframe in the neighboring cell.
  • the transmission direction of the fixed subframe can be determined according to preset information or uplink and downlink configuration information, if the transmission direction information is not included in the notification information, the transmission direction of the fixed subframe can also be known. Of course, if the transmission direction information is included in the notification information, the transmission direction information in the notification information is taken as the standard.
  • the interference intensity is further compared with the threshold.
  • the specific threshold setting can be specified in the agreement or notified by the upper layer based on empirical values or simulation results. Different interference strengths correspond to different thresholds.
  • the second network side device 20 does not use the subframe or lowers the usage priority of the subframe.
  • the specific manner of not using a subframe is the same as the manner in which the subframe is not used, and details are not described herein again.
  • the second network side device 20 may configure the subframe in the radio frame of the local cell according to the default configuration information, or according to the unification of the network side.
  • the configuration information is configured on the subframe in the radio frame of the local cell, or when the notification information further includes the transmission direction information, and configures the subframe in the radio frame of the local cell according to the received notification information.
  • the second network side device 20 autonomously configures the subframe in the radio frame of the local cell.
  • the second network side device 20 may consider one of the service requirements, the channel load, the number of terminals, and the like, and may also consider multiple types, and then configure the subframes in the radio frame of the current cell in a specific case.
  • the first network side device 10 and the second network side device 20 in the embodiment of the present invention may be a station (such as a macro base station, a micro base station, a home base station, etc.), or may be an RN (Relay Node). It can also be other network side devices.
  • two network side devices a method for transmitting information, and a method for configuring a subframe are also provided in the embodiment of the present invention. Since the principles of the devices and methods for solving the problem are similar to those for configuring the subframe, the devices are For the implementation of the method and the method, refer to the implementation of the method, and the repeated description will not be repeated.
  • the first network side device of the embodiment of the present invention includes: an information determining module 100 and a sending module.
  • the information determining module 100 is configured to determine type information according to a subframe in a radio frame configured by the cell, where the radio frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a subframe with a variable transmission direction.
  • the fixed subframe is a subframe with a fixed transmission direction;
  • the sending module 110 is configured to send the notification information including the type information to the neighboring cell.
  • the information determining module 100 may set a value of a corresponding bit of the fixed subframe in the type bitmap bitmap in a certain length of time, and set a value of the corresponding bit of the variable subframe in the type bitmap in the foregoing time length, And the type of the bitmap is used as the type information; or according to the correspondence between the type configuration format and the first serial number, determining the first serial number corresponding to the type configuration format of the fixed subframe and the variable subframe in a certain length of time, and determining The first serial number is used as the type information.
  • the notification information further includes transmission direction information.
  • the information determining module 100 determines the transmission direction information according to the subframe in the radio frame configured by the cell.
  • the information determining module 100 may set a value of a bit corresponding to a fixed subframe in a transmission direction bitmap in a certain length of time, and set a value of a bit corresponding to the variable subframe in the transmission direction bitmap in the foregoing time length, and
  • the transmission direction bitmap is used as the transmission direction information; or the second sequence number corresponding to the transmission direction configuration format of the fixed subframe and the variable subframe in a certain time length is determined according to the correspondence between the transmission direction configuration format and the second sequence number, and The determined second serial number is used as the transmission direction information.
  • the information determining module 100 may also combine the transmission direction information and the type information into configuration information, and place the configuration information in the notification information.
  • the sending module 110 may send the notification message to the neighboring cell through a direct or indirect communication interface.
  • the second network side device in the embodiment of the present invention includes: a processing module 200 and a configuration module 210.
  • the processing module 200 is configured to determine, according to the received notification information that includes the type information, a type of each subframe in the radio frame of the local cell, where the type information is determined by a subframe in a radio frame configured by the neighboring cell, and the wireless
  • the frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a subframe with a variable transmission direction, and the fixed subframe is a subframe with a fixed transmission direction.
  • the configuration module 210 is configured to configure a subframe in a radio frame of the local cell.
  • the configuration module 210 can detect the interference strength between the local cell and the neighboring cell that sends the notification information, or can detect the interference strength between the local cell and the neighboring cell that sends the notification information, and the interference strength is not less than the threshold. If the subframe to be configured is a variable subframe in the neighboring cell, the subframe is not used or the usage priority of the subframe is lowered.
  • the configuration module 210 configures unused subframes into MBSFN subframes or ABS subframes or uplink subframes but does not perform uplink scheduling.
  • the configuration module 210 configures the subframe type and the transmission direction with the same subframe identifier in the neighboring cell when the interference strength between the local cell and the neighboring cell that sends the notification information cannot be detected.
  • the frame type and transmission direction are the same.
  • the configuration module 210 When the configuration module 210 can detect the interference strength between the local cell and the neighboring cell that sends the notification information, and the interference strength cell threshold, the configuration module 210 autonomously configures the subframe in the radio frame of the local cell; If the interference strength between the neighboring cells that send the notification information is not the cell threshold, the subframe in the radio frame of the local cell is configured according to the default configuration information, or the wireless network of the cell is configured according to the unified configuration information sent by the network side. The subframe in the frame is configured, or when the transmission direction information is further included in the notification information, the subframe in the radio frame of the local cell is configured according to the received notification information.
  • the first type of network side device may also act as a receiver.
  • the second network side device may also function as a sender, so the functions of the first network side device and the second network side device may be combined in one entity (ie, the modules of the first network side device and the second network side device are in one entity) The function of the first network side device or the function of the second network side device is selected as needed.
  • the method for transmitting information in the embodiment of the present invention includes the following steps:
  • Step 501 The network side device determines the type information according to the subframe in the radio frame configured by the cell, where the radio frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a variable transmission direction.
  • a frame, a fixed subframe is a subframe in which the transmission direction is fixed.
  • Step 502 The network side device sends the notification information including the type information to the neighboring cell.
  • the neighboring cell here is an intra-frequency neighboring cell or an inter-frequency neighboring cell; and the neighboring cell and the neighboring cell may be in a neighboring cell of the same TDD network or different TDD networks.
  • step 501 there are many ways for the network side device to determine the type information, and several types are listed below.
  • Manner 1 The network side device sets the value of the corresponding bit in the type of the fixed subframe in the type of bit length (bit bitmap) in a certain length of time, and sets the value of the corresponding bit in the type of the variable subframe in the time length. , and use this type of bitmap as type information.
  • the type bitmap may only represent the type information of the fixed subframe in a certain length of time.
  • subframe 0, subframe 1, subframe 2, subframe 5, subframe 6 and subframe 7 are fixed subframes. "1" indicates a fixed subframe, and "0" indicates a variable subframe.
  • the specific type bitmap is 1110011100. In an implementation, the type bitmap may only represent the type information of the variable subframe in a certain length of time.
  • subframe 3 subframe 4
  • subframe 8 and subframe 9 are variable subframes. "1" indicates a fixed subframe, and "0" indicates a variable subframe.
  • Table 2 the specific type bitmap is
  • the specific length of time can be specified in the agreement, or it can be notified by the senior management.
  • the set duration can also be updated as needed.
  • the specific type bitmap indicates which subframes, the subframes corresponding to each bit, and the meaning of each bit value can be specified in the protocol, and can also be notified by the upper layer.
  • Manner 2 The network side device determines, according to the correspondence between the type configuration format and the first sequence number, the first sequence number corresponding to the type configuration format of the fixed subframe and the variable subframe in a certain length of time, and uses the determined first sequence number as Type information.
  • the correspondence between the type configuration format and the first serial number may be specified in the protocol in advance, or may be notified by the upper layer.
  • the correspondence between the configuration format and the serial number can also be updated as needed.
  • the network interface Since it is not dynamically allocated, the network interface has already interacted with the uplink and downlink configuration information. Therefore, if a certain subframe is notified as a fixed subframe in the implementation, the transmission direction is the same as that indicated by the already notified uplink and downlink configuration information; if a certain subframe is notified as a variable subframe, the transmission direction is already notified. The meaning indicated by the uplink and downlink configuration information is irrelevant.
  • the network side device can also put the transmission direction information into the notification information.
  • the transmission direction information indicates whether each subframe is uplink transmission or downlink transmission.
  • the network side device may further determine the transmission direction information according to the subframe in the radio frame configured by the cell.
  • the network side device determines the transmission direction information, and several are listed below.
  • the network side device sets the value of the corresponding bit in the transmission direction bitmap of the fixed subframe in a certain length of time, and sets the value of the corresponding bit in the transmission direction bitmap in the time length, and
  • the transmission direction bitmap is used as the transmission direction information.
  • the transmission direction of subframe 2, subframe 7, subframe 8 and subframe 9 is uplink. "1" indicates that the transmission direction is uplink, and "0" indicates that the transmission direction is downlink. As shown in Table 4, the specific transmission direction bitmap is 0010000111.
  • the specific length of time can be specified in the agreement, or it can be notified by the senior management.
  • the set duration can also be updated as needed.
  • the specific transmission direction bitmap indicates which subframes, subframes corresponding to each bit, and the meaning of each bit value can be specified in the protocol, and can also be notified by the upper layer.
  • Manner 2 The network side device determines the correspondence between the format and the second serial number according to the transmission direction, and determines a certain length of time.
  • the transmission direction of the fixed subframe and the variable subframe in the degree configures a second sequence number corresponding to the format, and the determined second sequence number is used as the transmission direction information.
  • the transmission direction of subframe 2, subframe 3, subframe 4, and subframe 7 is uplink; subframe 0, subframe 1, subframe 5, subframe 6, and sub-frame
  • the transmission direction of frame 8 and subframe 9 is downlink. According to Table 5, it can be determined that the first serial number is 3.
  • the correspondence between the type configuration format and the first serial number may be specified in the protocol in advance, or may be notified by the upper layer.
  • the correspondence between the configuration format and the serial number can also be updated as needed.
  • the network side device may send the transmission direction information and the type information through two different notification information.
  • the transmission direction information and the type information may also be placed in the same notification information.
  • the network side device If the network side device puts both the transmission direction information and the type information in the same notification information, the network side device combines the transmission direction information and the type information into configuration information, and places the configuration information in the notification information.
  • the specific configuration information may be type bitmap+transmission direction bitmap; type bitmap+second sequence number; first sequence number + transmission direction bitmap; first sequence number + one of the second sequence numbers.
  • the specific use can be specified in the agreement; it can also be notified by the senior management.
  • the configuration information can be type bitmap+transmission direction bitmap
  • the first half is the type bitmap
  • the second half is the transmission direction bitmap
  • the first half is the transmission direction bitmap
  • the second half is the type bitmap
  • the bitmap is mixed together.
  • the type information and the transmission direction information of each subframe can be directly notified to the neighboring cell by using more than one bit information.
  • subframe 0, subframe 1, subframe 2, subframe 5, subframe 6 and subframe 7 are fixed subframes
  • subframe 3, subframe 4, subframe 8 and subframe 9 are variable subframes "1" indicating fixed subframes, "0” indicating variable subframes
  • subframe 2, subframe 7, subframe 8 and subframe 9 are transmitting in the uplink direction
  • subframe 0, sub-frames The transmission direction of frame 1, subframe 3, subframe 4, subframe 5, and subframe 6 is downlink, 1 " indicates that the transmission direction is uplink, and "0" indicates that the transmission direction is downlink, as shown in Table 6. Specific configuration information Is 00000110100000011111.
  • the network side device may also put one or more of the following information into the notification information according to the requirement: the cell identifier of the current cell, the PLMN identifier of the current cell, and the cell identifier of the neighboring cell.
  • the network side device may send the notification message to the neighboring cell through the direct communication interface or the indirect communication interface.
  • the method for configuring a subframe in the embodiment of the present invention includes the following steps:
  • Step 601 The network side device determines, according to the received notification information that includes the type information, the type of each subframe in the radio frame of the local cell, where the type information is determined by the subframe in the radio frame configured by the neighboring cell, and the wireless
  • the frame includes a variable subframe and/or a fixed subframe, and the variable subframe is a subframe with a variable transmission direction, and the fixed subframe is fixed in the transmission direction. Variable sub-frame.
  • Step 602 The network side device configures a subframe in a radio frame of the local cell.
  • step 602 the network side device determines whether the interference strength between the local cell and the neighboring cell that sends the notification information can be detected.
  • the intensity of the disturbance here includes but is not limited to one of the following values:
  • the network side device does not use the subframe or lower the subframe. The priority of the use of the frame.
  • the network side device may configure the unused subframe as an MBSFN subframe or an ABS or an uplink subframe but does not perform uplink scheduling.
  • the notification information includes the transmission direction information, and it is determined that the interference strength between the 'j, the area and the neighboring node J of the transmission notification information cannot be detected, if the subframe to be configured is a variable subframe when the neighboring cell is a variable subframe.
  • the subframe type and the transmission direction that can be configured by the network side device are the same as the subframe type and the transmission direction of the same subframe identifier in the neighboring cell.
  • the subframe to be configured is a fixed subframe in the neighboring cell, the subframe type and the transmission direction and the neighboring cell that the network side device can configure The subframe type identified by the same subframe is the same as the transmission direction.
  • the transmission direction of the fixed subframe can be determined according to preset information or uplink and downlink configuration information, if the transmission direction information is not included in the notification information, the transmission direction of the fixed subframe can also be known. Of course, if the transmission direction information is included in the notification information, the transmission direction information in the notification information is taken as the standard.
  • the interference intensity is further compared with the threshold.
  • the specific threshold setting can be specified in the agreement or notified by the upper layer based on the empirical value or simulation result. Different interference strengths correspond to different thresholds.
  • the network side device does not use the subframe or lowers the usage priority of the subframe.
  • the specific manner of not using the subframe is the same as the method of not using the subframe described above, and details are not described herein again.
  • the network side device may configure the subframe in the radio frame of the local cell according to the default configuration information, or according to the unified configuration information sent by the network side.
  • the subframe in the cell radio frame is configured, or when the notification direction further includes the transmission direction information, the subframe in the radio frame of the local cell is configured according to the received notification information.
  • the network side device autonomously configures the subframe in the wireless frame of the cell.
  • the network side device may consider one of the service requirements, the channel load, the number of terminals, and the like, and may also consider multiple types, and then configure the subframes in the radio frame of the local cell in a specific case.
  • 5 and FIG. 6 can synthesize a process to form a new method for configuring a subframe, that is, step 501 and step 502 are performed first, and then step 601 and step 602 are performed.
  • embodiments of 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 can be embodied in the form of a computer program product embodied on one or more computer-usable storage interfaces (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer-usable storage interfaces including but not limited to disk storage, CD-ROM, optical storage, etc.
  • 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.

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

Abstract

La présente invention concerne le domaine des technologies de communication sans fil et, en particulier, un procédé, un système et un dispositif pour transmettre des informations et configurer une sous-trame, de manière à résoudre le problème de l'art antérieur consistant en ce qu'une cellule ne peut pas acquérir des informations de configuration d'une cellule voisine lorsqu'une spécification de rapport concernant des services de liaison montante et de liaison descendante de la cellule est modifiée dynamiquement. Le procédé pour transmettre des informations dans le mode de réalisation de la présente invention consiste en ce que : un dispositif côté réseau détermine des informations de type conformément à une sous-trame dans une trame sans fil configurée par une cellule actuelle, la trame sans fil comprenant une sous-trame variable et/ou une sous-trame fixe, la sous-trame variable étant une sous-trame avec une direction de transmission variable, et la sous-trame fixe étant une sous-trame avec une direction de transmission fixe ; et le dispositif côté réseau envoie des informations de notification contenant les informations de type à une cellule voisine. Dans les modes de réalisation de la présente invention, étant donné que les informations de notification contenant les informations de type peuvent être envoyées à une cellule voisine, lorsque la spécification de rapport concernant des services de liaison montante et de liaison descendante d'une cellule est modifiée dynamiquement, la cellule peut acquérir les informations de configuration de la cellule voisine, améliorant de ce fait le rendement.
PCT/CN2011/084057 2010-12-21 2011-12-15 Procédé, système, et dispositif de transmission d'informations et de configuration de sous-trame WO2012083814A1 (fr)

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