WO2012130139A1 - Procédé, système et dispositif pour notifier des informations de configuration de sous-trame et configurer une sous-trame - Google Patents

Procédé, système et dispositif pour notifier des informations de configuration de sous-trame et configurer une sous-trame Download PDF

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Publication number
WO2012130139A1
WO2012130139A1 PCT/CN2012/073191 CN2012073191W WO2012130139A1 WO 2012130139 A1 WO2012130139 A1 WO 2012130139A1 CN 2012073191 W CN2012073191 W CN 2012073191W WO 2012130139 A1 WO2012130139 A1 WO 2012130139A1
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Prior art keywords
subframe
network side
side device
information
control signaling
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PCT/CN2012/073191
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English (en)
Chinese (zh)
Inventor
潘学明
沈祖康
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电信科学技术研究院
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Publication of WO2012130139A1 publication Critical patent/WO2012130139A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks

Definitions

  • the present application claims a method, system and method for submitting a sub-frame configuration information notification and a sub-frame configuration to the Chinese Patent Office on March 29, 2011, the application number is 201110077308.2
  • the present invention relates to the field of wireless communication technologies, and in particular, to a method, system and device for subframe configuration information notification and subframe configuration.
  • Technology for the basic duplex mode of cellular systems TDD (Time Division Duplex) mode refers to the use of the same working frequency band on the uplink and downlink, and the uplink and downlink signals are transmitted at different time intervals.
  • guard interval between the lines; FDD (Frequency Division Duplex) mode means that the uplink and downlink use different working bands, and can be performed on different frequency carriers at the same time. Transmission of line signals, protection bandwidth between uplink and downlink (Guard B And, GB ).
  • 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 Time Slot) for transmitting PSS (Primary Synchronization Signal), PDCCH (Physical Downlink Control Channel), PHICH (Physical HARQ Indication Channel), PCFICH (Physical Control Format Indication Channel), PDSCH (Physical Downlink Shared Channel), etc.
  • DwPTS Downlink Pilot Time Slot
  • PSS Primary Synchronization Signal
  • PDCCH Physical Downlink Control Channel
  • PHICH Physical HARQ Indication Channel
  • PCFICH Physical Control Format Indication Channel
  • PDSCH Physical Downlink Shared Channel
  • the UpP Pilot (Uplink Pilot Time Slot) is used to transmit SRS (Sounding Reference Signal) and PRACH (Physical Random Access Channel). ) Wait.
  • the regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting an uplink/downlink control channel and service data.
  • two special subframes (located in subframes 1 and 6) or a special subframe (located in subframe 1) can be configured.
  • 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) system and 4G TD-LTE
  • the division of the uplink and downlink subframes is static or semi-static.
  • the proportion of the uplink and downlink subframes is determined and remains unchanged according to the cell type and the approximate service ratio in the network planning process. This is a relatively simple approach in the context of large coverage of macro cells, and is also more effective.
  • more and more low-power base stations such as Pico cells and Home NodeBs are deployed to provide local small coverage. In such cells, the number of users is small, and The user service requirements vary greatly. Therefore, there is a dynamic change in the proportion of uplink and downlink services in the cell.
  • 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 notifying a subframe configuration information, which can be used to obtain configuration information of a neighboring cell when the uplink and downlink traffic ratios of the cell 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 subframe type information according to the subframe in the radio frame configured by the cell;
  • the network side device sends control signaling including subframe type information to the network side device of the neighboring cell through the air interface.
  • the network side device receives, by the air interface, the control signaling including the neighboring cell subframe type information of the network side device of the neighboring cell, where the subframe type information is a subframe in the configured wireless frame according to the network side device of the neighboring cell. definite;
  • the network side device configures a subframe in a radio frame of the local cell according to the neighbor cell subframe type information.
  • An apparatus for notifying a subframe configuration information that is provided by the embodiment of the present invention includes:
  • An information determining module configured to determine subframe type information according to a subframe in a radio frame configured by the cell
  • a sending module configured to send, by using an air interface, a control message including subframe type information to a network side device of the neighboring cell Order.
  • a processing module configured to receive, by using an air interface, control signaling, including a neighboring cell subframe type information, of the network side device of the neighboring cell, where the subframe type information is a network side device of the neighboring cell according to the configured wireless frame Sub-frame determined;
  • a configuration module configured to configure, according to the neighbor cell subframe type information, a subframe in a radio frame of the local cell.
  • a system for configuring a subframe according to an embodiment of the present invention includes:
  • a network side device configured to determine subframe type information according to a subframe in a radio frame configured by the cell, and send, by using an air interface, control signaling including subframe type information to a network side device of the neighboring cell;
  • a network side device that receives the control signaling, configured to receive, by using an air interface, a control signaling that includes a neighboring cell subframe type information of a network side device of a neighboring cell, and according to the neighboring cell subframe type information, to the local cell
  • the subframes in the radio frame are configured.
  • the embodiment of the present invention sends the control signaling of the local cell to the neighboring cell through the air interface, so that when the uplink and downlink service proportion requirements of the cell are dynamically changed, the configuration information of the neighboring cell can be acquired, and the system performance is improved; further, The update speed of the subframe configuration information is improved to support more dynamic subframe allocation and corresponding interference avoidance operation, and is particularly effective in a scenario where there is no network interface between cell base stations or a network interface delay is large.
  • the network side device determines the type of each subframe in the radio frame of the local cell according to the received control signaling including the subframe type information, and configures the subframe in the radio frame of the local cell to implement the neighboring cell.
  • Thousands of disturbances coexist.
  • FIG. 1A is a schematic diagram of a frame structure of a 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 subframe type information according to the subframe in the radio frame configured by the cell in the embodiment of the present invention; the network side device sends the control message including the subframe type information to the network side device of the neighboring cell through the air interface. make. Due to this In the embodiment of the present invention, the control signaling of the local cell is sent to the neighboring cell through the air interface, so that when the uplink and downlink traffic ratio requirements of the cell are dynamically changed, the configuration information of the neighboring cell can be acquired, and the system performance is improved.
  • the network side device configures the subframe in the radio frame of the local cell according to the control signaling that includes the neighboring cell subframe type information of the network side device from the neighboring cell, where the subframe type information is neighbor.
  • the network side device of the cell is determined according to the subframe in the configured radio frame.
  • the network side device determines the type of each subframe in the radio frame of the local cell according to the received control signaling including the subframe type information, and configures the subframe in the radio frame of the local cell to implement the neighboring cell. Thousands of 4 coexist.
  • 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, 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, 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 subframe type information, and send the control signaling including the subframe type information to the network side device of the neighboring cell through the air interface.
  • the second network side device 20, which receives the control signaling is configured to receive, by using an air interface, control signaling including neighboring cell subframe type information of the network side device of the neighboring cell, and wirelessly, according to the neighboring cell subframe type information
  • the subframes in the frame are configured.
  • the neighboring cell here is an intra-frequency neighboring cell or an inter-frequency neighboring cell; the local cell and the neighboring cell may be in the same TDD network or different TDD networks.
  • a specific time-frequency position of some specific subframes may be preset in a radio frame, and the first network-side device 10 may send control signaling by using a specific time-frequency position of a specific subframe in the radio frame. Which of the time-frequency positions of the specific subframes can be specified as the specific time-frequency position of the specific subframe can be specified in the protocol or the first network-side device 10 can be notified by the upper layer.
  • the second network side device 20 receives the control signaling by using a specific time-frequency position of a specific subframe in the radio frame.
  • the first network side device 10 transmits control signaling through a specific time-frequency position of a specific subframe in a radio frame, and several types are listed below.
  • Manner 1 The first network side device 10 sends control signaling through a system broadcast, for example, through a cell system broadcast.
  • MIB Master Information Block
  • SIB System Information Block
  • control signaling can also be sent through a new system broadcast message.
  • the first network side device 10 sends control signaling by using a subframe fixed for downlink transmission. For example, one or more of subframe 0, subframe 1, subframe 5, and subframe 6.
  • the first network side device 10 sends control signaling by using a specific resource location of a downlink pilot time slot in a special subframe or a specific resource location of a protection time slot in a special subframe.
  • Manner 4 The first network side device 10 sends control signaling by using a specific resource location of the downlink subframe.
  • embodiments of the present invention are not limited to the foregoing four modes, and other embodiments capable of transmitting control signaling including subframe type information through an air interface are applicable to the embodiments of the present invention.
  • the first network side device 10 transmits control signaling every N radio frame cycles through the air interface; where N is a positive integer. For example, if N is 5, the number of infinite frames can be calculated, and control signaling is sent once to the fifth radio frame; then it is cleared to continue the calculation.
  • the specific number of N can be specified in the agreement or notified by the senior management as needed.
  • the sender and the receiver need to be consistent regardless of the transmission method and the value of N. Specifically, it may be specified in the agreement or negotiated by the sender and the receiver or notified by the upper layer.
  • the first network side device 10 transmits the transmission information of the resource carrying the control signaling to the second network side device 20, if it is determined by the sender and the receiver.
  • the transmission information herein includes, but is not limited to, at least one of the following information:
  • OFDM Orthogonal Frequency Division Multiplexing
  • PRB Physical Resource block, physical resource block, resource information such as code channel.
  • the transmission information is read through a network interface (for example, an OAM (Operation and Maintenance) interface); and the high-level signaling carrying the transmission information is directly read to obtain transmission information.
  • a network interface for example, an OAM (Operation and Maintenance) interface
  • OAM Operaation and Maintenance
  • the second network side device 20 can perform downlink synchronization with the first network side device 10 before receiving the control signaling, and then read the system broadcast information of the neighboring cell, so as to know the information of the neighboring cell.
  • the second network side device 20 can obtain control signaling when reading the system broadcast information of the neighboring cell. Otherwise, after reading the system broadcast information of the neighboring cell, the control signaling is received.
  • the radio frame in the embodiment of the present invention includes three types of variable subframes with variable transmission directions and/or fixed subframes with fixed transmission directions. 1.
  • the subframes in the radio frame are all variable subframes; 2.
  • the subframes in the radio frame are all solid.
  • the subframe in the radio frame has a variable subframe and a fixed subframe.
  • Variable subframes can be dynamically configured as needed. For example, if the current period is the next uplink, it may become a downlink, and the fixed subframe is a subframe in which the transmission direction does not change.
  • the first network side device 10 determines the subframe type information, and several are listed below.
  • the first network side device 10 sets a first identifier of a corresponding bit in a type bitmap in a fixed time frame in a certain time length, and a corresponding bit position in the type bitmap in the variable time frame in the set time length.
  • the second identifier, and the type bitmap is used as the subframe type information.
  • the type bitmap may only represent the subframe 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.
  • the first identifier uses "1" to indicate a fixed subframe
  • the second identifier uses "0" to indicate a variable subframe, as shown in Table 1:
  • the specific type bitmap is 1110011100. That is, the subframe type information is 1110011100.
  • the second network side device 20 After receiving the 1110011100, the second network side device 20 knows the type of each subframe by using the subframe corresponding to each bit in the type bitmap and the meaning of the identifier corresponding to each bit.
  • the type b it m ap may only represent the subframe type information of the variable subframe in a certain length of time.
  • subframe 3 subframe 4
  • subframe 8 subframe 9
  • “1” means a fixed subframe
  • "0” means a variable subframe, as shown in Table 2:
  • the second network side device 20 After receiving the 0001100011, 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 identifier corresponding to each bit.
  • 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 identifier can be specified in the protocol, and can also be notified by the upper layer.
  • the first network side device 10 determines one according to the corresponding relationship between the configured type configuration mode and the first serial number.
  • the first sequence number corresponding to the type configuration mode of the fixed subframe and the variable subframe in the fixed time length, and the determined first sequence number is used as the subframe type information.
  • Table 3 assumes that the time length is 10ms (ie, one radio frame length), and subframe 3, subframe 4, subframe 8 and subframe 9 are variable subframes; subframe 0, subframe 1, subframe 2, subframe 5 Subframe 6 and subframe 7 are fixed subframes. According to Table 3, it can be determined that the first serial number is 1.
  • 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 mode 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 control signaling.
  • 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 a third identifier of a corresponding bit in the transmission direction bitmap of the fixed subframe in a certain length of time, and a fourth corresponding bit in the transmission direction bitmap in the set time length. Identify and use the transmission direction bitmap as the transmission direction information.
  • the transmission direction of subframe 2, subframe 7, subframe 8, and subframe 9 is uplink.
  • " ⁇ indicates that the transmission direction is uplink
  • "0" indicates that the transmission direction is downlink, as shown in Table 4: 0 1 2 3 4 5 6 7 8 9 Transmission direction 0 0 1 0 0 0 0 1 1 1 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 knows the transmission direction of each subframe according to the meaning of the subframe corresponding to each bit in the transmission direction and the identifier corresponding to each bit.
  • 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 identifier 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 mode 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 subframe type information by using two different control signals.
  • the transmission direction information and the subframe type information may also be placed in the same control signaling.
  • the first network side device 10 sets both the transmission direction information and the subframe type information in the same control signaling, the first network side device 10 combines the transmission direction information and the subframe type information into configuration information, and sets the configuration information. Control In the signaling.
  • 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 subframe type information and the transmission direction information of each subframe may 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" for fixed subframes, "0” for variable subframes
  • subframe 2, subframe 7, subframes 8 and subframes 9 for transmission 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:
  • Table 6 The specific configuration information is 00000110100000011111.
  • the second network side device 20 After receiving the 00000110100000011111, the second network side device 20 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 identifier 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 control signaling according to the requirement: the cell identifier of the local cell, the PLMN (Public Land Mobile Network) identifier and the neighbor of the local cell.
  • the cell identity of the cell may also put one or more of the following information into the control signaling according to the requirement: the cell identifier of the local cell, the PLMN (Public Land Mobile Network) identifier and the neighbor of the local cell.
  • the cell identity of the cell may be put one or more of the following information into the control signaling according to the requirement: the cell identifier of the local cell, the PLMN (Public Land Mobile Network) identifier and the neighbor of the local 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 control signaling including the subframe type information, and then configures the subframe in the radio frame of the local cell.
  • the second network side device 20 can also determine whether the interference strength between the local cell and the neighboring cell transmitting the control signaling can be detected.
  • the intensity of the disturbance here includes but is not limited to one of the following values:
  • RSRP Reference signal received power
  • RIP Receiveived Interference Power
  • CQI Channel Quality Indicator
  • RSRQ Reference Signal Received Quality
  • the second network side device 20 When it is determined that the interference strength between the local cell and the neighboring cell that sends the control signaling cannot be detected, if the subframe to be configured is a variable subframe in the neighboring cell, the second network side device 20 does not use the subframe. Or lower 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 control signaling includes the transmission direction information, and determines that the interference strength between the local cell and the neighboring cell that sends the control signaling cannot be detected, if the subframe to be configured is a variable subframe in the neighboring cell, the second network
  • the subframe type and the transmission direction that the side device 20 can configure 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 to be configured is a fixed subframe in the neighboring cell
  • the subframe type and transmission that the second network side device 20 can configure The direction is the same as the subframe type and the transmission direction of the same subframe identifier 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 control signaling, the transmission direction of the fixed subframe can also be known.
  • the control direction includes the transmission direction information, the transmission direction information in the control signaling is taken as the standard.
  • the interference intensity is further compared with the threshold.
  • the specific threshold setting can be specified in the agreement based on empirical values or simulation results or notified by the upper layer. 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 the 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 control signaling further includes the transmission direction information, and configures the subframe in the radio frame of the local cell according to the received control signaling.
  • the second network side device 20 autonomously configures the subframe in the radio frame of the cell.
  • the second network side device 20 may consider one of a service requirement, a channel load, a number of terminals, and the like, and may also consider multiple types, and then configure the subframe in the radio frame of the local cell in a specific case. For example, if the uplink load is too heavy, you can configure an uplink subframe. If there are too many downlink services, you can configure multiple downlink subframes. It should be noted that the above Tables 1 to 6 are merely illustrative, and the embodiments of the present invention are not necessarily in accordance with the contents of Tables 1 to 6, and may not be used in the form and contents of Tables 1 to 6. Other ways to achieve.
  • 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 an RN (relay) device, or may be Other network side devices.
  • a station such as a macro base station, a micro base station, a home base station, etc.
  • RN relay
  • 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 The implementation of the method and method can be referred to the implementation of the system, and the repetition 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 110.
  • the information determining module 100 is configured to determine the subframe type information according to the subframe in the radio frame configured by the cell
  • the sending module 110 is configured to send, by using an air interface, a control packet that includes the subframe type information to the network side device of the neighboring cell. make.
  • the transmitting module 110 transmits control signaling through a specific time-frequency position of a specific subframe in the radio frame.
  • the transmitting module 110 can transmit control signaling through a specific time-frequency position of a specific subframe in a radio frame.
  • the transmitting module 110 transmits control signaling through the system broadcast.
  • the sending module 110 sends control signaling through an MIB message or an SIB message.
  • the sending module 110 is configured to be a downlink subframe, a specific resource location of a downlink pilot slot in a special subframe, a specific resource location of a guard slot in a special subframe, and a specific resource of a downlink subframe.
  • One of the locations sends control signaling.
  • the transmitting module 110 can transmit control signaling every N radio frame cycles over the air interface; where N is a positive integer.
  • the sending module 110 sends the transmission information of the resource carrying the control signaling to the network side device of the neighboring cell.
  • the radio frame in the embodiment of the present invention includes a variable subframe with a variable transmission direction and/or a fixed subframe with a fixed transmission direction.
  • the information determining module 100 sets a first identifier of a corresponding bit of the fixed subframe in the type bitmap in a certain length of time, and a second identifier of the corresponding bit of the variable subframe in the type bitmap in the set time length, and
  • the type bitmap is used as the subframe type information; or the first sequence number corresponding to the type configuration mode of the fixed subframe and the variable subframe in a certain time length is determined according to the correspondence between the type configuration mode and the first sequence number, and the determined The first sequence number is used as subframe type information.
  • control signaling further includes transmission direction information; and 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 sets a third identifier of a corresponding bit in the transmission direction bitmap of the fixed subframe in a certain length of time, and a fourth corresponding bit in the transmission direction bitmap in the set time length. Identifying, and using the transmission direction bitmap as the transmission direction information; or determining the second serial number corresponding to the transmission direction configuration format of the fixed subframe and the variable subframe in a certain length of time according to the correspondence between the transmission direction configuration format and the second serial number And the determined second serial number is used as the transmission direction information.
  • the information determining module 100 combines the transmission direction information and the subframe type information into configuration information, and places the configuration information in the control signaling.
  • the second network side device in the embodiment of the present invention includes: a processing module 200 and a configuration module 210, where the processing module 200 is configured to receive, by using an air interface, a neighboring cell subframe type of a network side device from a neighboring cell.
  • the configuration module 210 is configured to configure, according to the neighbor cell subframe type information, a subframe in the radio frame of the local cell.
  • the processing module 200 receives control signaling through a specific time-frequency location of a particular subframe in the radio frame.
  • the processing module 200 before receiving the control signaling, performs downlink synchronization with the network side device of the neighboring cell, and then reads the system broadcast message of the neighboring cell.
  • the processing module 200 obtains the transmission information through the network interface or the high layer signaling, and determines the resource that carries the control signaling according to the transmission information.
  • the radio frame of the embodiment of the present invention 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 cannot detect the interference strength between the local cell and the neighboring cell that sends the control signaling, or can detect the interference strength between the local cell and the neighboring cell that sends the control signaling, and the interference strength 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 the unused subframe into an MBSFN subframe or an ABS subframe or an uplink subframe but does not perform uplink scheduling.
  • the configuration module 210 does not detect the interference strength between the local cell and the neighboring cell that sends the control signaling, and configures the subframe type and the transmission direction to be the same subframe identifier in the neighboring cell.
  • the subframe type and the transmission direction are the same.
  • the configuration module 210 autonomously configures the subframe in the radio frame of the local cell when detecting the interference strength between the local cell and the neighboring cell that sends the control signaling, and the interference strength cell threshold; If the interference strength between the local cell and the neighboring cell that sends the control signaling is not the cell threshold, the subframe in the radio frame of the local cell is configured according to the default configuration information, or according to the unified configuration delivered by the network side.
  • the information is configured on the subframe in the radio frame of the local cell, or when the control signaling further includes the transmission direction information, and configures the subframe in the radio frame of the local cell according to the received control signaling.
  • 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 first network side device
  • the modules of the second network side device and the second network side device are in a single entity, and 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 subframe type information according to the subframe in the radio frame configured by the cell.
  • Step 502 The network side device sends, by using an air interface, control signaling that includes subframe type information to the network side device of the neighboring cell.
  • the neighboring cell here is an intra-frequency neighboring cell or an inter-frequency neighboring cell; the local cell and the neighboring cell may be in the same TDD network or different TDD networks.
  • a specific time-frequency position of a specific subframe may be preset in a radio frame.
  • the network-side device may send control signaling by using a specific time-frequency position of a specific subframe in the radio frame. Which of the time-frequency positions of the specific subframes can be specified as the specific time-frequency position of the specific subframe can be specified in the protocol or the network-side device can be notified by the upper layer.
  • Manner 1 The network side device sends control signaling through system broadcast, for example, through MIB message or SIB message in the cell system broadcast, and control signaling is also sent through the new system broadcast message.
  • Manner 2 The network side device sends control signaling by using a subframe that is fixed for downlink transmission. For example, one or more of subframe 0, subframe 1, subframe 5, and subframe 6.
  • Manner 3 The network side device sends control signaling by using a specific resource location of a downlink pilot time slot in a special subframe or a specific resource location of a protection time slot in a special subframe.
  • Manner 4 The network side device sends control signaling by using a specific resource location of the downlink subframe.
  • embodiments of the present invention are not limited to the foregoing four modes, and other embodiments capable of transmitting control signaling including subframe type information through an air interface are applicable to the embodiments of the present invention.
  • the network side device transmits control signaling every N radio frame cycles through the air interface; wherein N is a positive integer. For example, if N is 5, the number of infinite frames can be calculated, and control signaling is sent to the fifth radio frame; then, the calculation is continued.
  • the specific number of N can be specified in the agreement or notified by the senior management as needed.
  • the sender and the receiver need to be consistent regardless of the transmission method and the value of N. Specifically, it may be specified in the agreement or negotiated by the sender and the receiver or notified by the upper layer.
  • the network side device sends the transmission information of the resource carrying the control signaling to the network side device of the neighboring cell before the network side device sends the control signaling.
  • the transmission information herein includes, but is not limited to, at least one of the following information:
  • the transmission information is read through a network interface (for example, OAM is read; and the high-level signaling carrying the transmission information is directly read to obtain transmission information.
  • a network interface for example, OAM is read; and the high-level signaling carrying the transmission information is directly read to obtain transmission information.
  • the radio frame in the embodiment of the present invention includes three types of variable subframes with variable transmission directions and/or fixed subframes with fixed transmission directions. 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.
  • Variable subframes can be dynamically configured as needed. For example, if the current period is the next uplink, it may become a downlink, and the fixed subframe is a subframe in which the transmission direction does not change.
  • step 501 there are many ways for the network side device to determine the subframe type information, and several types are listed below.
  • Manner 1 The network side device sets a first identifier of a corresponding bit in a fixed type subframe in a type bitmap (bit bitmap), and a second time in which the variable subframe is in a corresponding bit length in the type bitmap. Identifies and uses the type bitmap as the subframe type information.
  • bit bitmap type bitmap
  • the type bitmap may only represent the subframe 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.
  • ' ⁇ indicating a fixed subframe
  • "0" means a variable subframe, as shown in Table 1, the specific type bitmap is 1110011100.
  • the type b it m ap may only represent the subframe type information of the variable subframe in a certain length of time.
  • subframe 3 denotes a fixed subframe
  • subframe 8 and subframe 9 are variable subframes.
  • ⁇ denotes a fixed subframe
  • 0 denotes a variable subframe, as shown in Table 2, the specific type bitmap is 0001100011.
  • 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 identifier 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 corresponding relationship between the type configuration mode and the first sequence number, the first sequence number corresponding to the type configuration mode of the fixed subframe and the variable subframe in a certain length of time, and the determined first The sequence number is used as the subframe type information.
  • the correspondence between the type configuration mode 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; A certain subframe is notified as a variable subframe, and its transmission direction is independent of the meaning indicated by the already notified uplink and downlink configuration information.
  • the network side device can also put the transmission direction information into the control signaling.
  • the transmission direction information indicates whether each subframe is an uplink transmission or a 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.
  • Manner 1 The network side device sets a third identifier of a corresponding bit in the transmission direction bitmap of the fixed subframe in a certain length of time, and a fourth identifier of the corresponding bit in the transmission direction bitmap of the variable subframe in the set 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 identifier can be specified in the protocol, and can also be notified by the upper layer.
  • Manner 2 The network side device determines a second serial number corresponding to a transmission direction configuration format of the fixed subframe and the variable subframe in a certain length of time according to the mapping between the configuration format of the transmission direction and the second serial number, and determines the second serial number.
  • the 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 correspondence between the type configuration mode 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 subframe type information through two different control signals.
  • the transmission direction information and the subframe type information may also be placed in the same control signaling.
  • the network side device If the network side device puts both the transmission direction information and the subframe type information in the same control signaling, the network side device combines the transmission direction information and the subframe type information into configuration information, and places the configuration information in the control signaling.
  • the specific configuration information may be type bitmap+transmission direction bitmap; type bitmap+second serial number; first serial number
  • transmission direction bitmap one of the first sequence number + the second sequence number.
  • 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 can be type bitmap, the second half Part of the transmission direction bitmap; the first half is the transmission direction bitmap, the second half is the type bitmap; you can also mix the type bitmap and the transmission direction bitmap.
  • the subframe type information and the transmission direction information of each subframe may 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
  • 8 and subframe 9 are variable subframes " ⁇ denotes a fixed subframe, "0" denotes a variable subframe; subframe 2, subframe 7, subframe 8 and subframe 9 transmit direction is uplink, subframe 0, subframe 1.
  • the transmission direction of 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 network side device may also put one or more of the following information into the control signaling 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 method for configuring a subframe in the embodiment of the present invention includes the following steps:
  • Step 601 The network side device receives the control signaling of the neighboring cell subframe type information of the network side device of the neighboring cell by using the air interface, where the subframe type information is a sub-frame of the neighboring cell according to the configured radio frame.
  • the frame is determined.
  • Step 602 The network side device only uses the neighboring cell subframe type information to configure the subframe in the radio frame of the local cell.
  • the network side device receives control signaling by using a specific time-frequency position of a specific subframe in the radio frame.
  • the resource transmission information of the specific bearer control signaling needs to be consistent between the sender and the receiver. Specifically, it may be specified in the agreement or negotiated by the sender and the receiver or notified by the upper layer.
  • the network side device receives the transmission information of the bearer control signaling sent by the network side device of the neighboring cell.
  • the transmission information herein includes, but is not limited to, at least one of the following information:
  • the transmission information is read through a network interface (for example, an OAM interface); and the high-level signaling carrying the transmission information is directly read to obtain transmission information.
  • a network interface for example, an OAM interface
  • the high-level signaling carrying the transmission information is directly read to obtain transmission information.
  • the network side device may perform downlink synchronization with the network side device of the neighboring cell, and then read system broadcast information of the neighboring cell, so as to know the information of the neighboring cell.
  • the radio frame of the embodiment of the present invention includes a variable subframe and/or a fixed subframe, which indicates 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 network side device can also determine whether the interference strength between the local cell and the neighboring cell transmitting the control signaling 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 lowers the subframe. The priority of the use of the subframe.
  • the network side device may configure the unused subframe into an MBSFN subframe or an ABS or an uplink subframe but does not perform uplink scheduling.
  • control signaling includes the transmission direction information, and determines that the interference strength between the local cell and the neighboring cell that sends the control signaling cannot be detected, if the subframe to be configured is a variable subframe in the neighboring cell, the network side device
  • the subframe type and the transmission direction that 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 to be configured is a fixed subframe in the neighboring cell
  • the subframe type and the transmission direction and the neighboring direction that the network side device can configure 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 control signaling, the transmission direction of the fixed subframe can also be known.
  • the control direction includes the transmission direction information, the transmission direction information in the control signaling is taken as the standard.
  • the interference strength 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 radio frame of the cell is configured, or when the transmission direction information is included in the control signaling, the subframe in the radio frame of the local cell is configured according to the received control signaling.
  • the network side device autonomously configures the subframe in the wireless frame of the cell.
  • the network side device may consider one of a service requirement, a channel load, and a number of terminals. It is also possible to consider a plurality of types, and then configure the subframes in the radio frame of the cell in a specific case.
  • a process may be synthesized 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.
  • the embodiment of the present invention sends the control signaling of the local cell to the neighboring cell through the air interface, so that when the uplink and downlink service proportion requirements of the cell are dynamically changed, the configuration information of the neighboring cell can be acquired, and the system performance is improved; further, The update speed of the subframe configuration information is improved to support more dynamic subframe allocation and corresponding interference avoidance operation, and is particularly effective in a scenario where there is no network interface between cell base stations or a network interface delay is large.
  • the network side device determines the type of each subframe in the radio frame of the local cell according to the received control signaling including the subframe type information, and configures the subframe in the radio frame of the local cell to implement the neighboring cell. Thousands of disturbances coexist.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne le domaine technique des communications sans fil, et en particulier un procédé, un système et un dispositif pour notifier des informations de configuration de sous-trame et configurer une sous-trame, afin d'acquérir des informations de configuration concernant un voisin lorsque l'exigence de rapport service de liaison montante/liaison descendante d'une cellule est dynamiquement changée. Le procédé de notification d'informations de configuration de sous-trame dans les modes de réalisation de la présente invention comprend les étapes suivantes : un dispositif côté réseau détermine des informations de type de sous-trame selon une sous-trame d'une trame sans fil configurée pour la présente cellule ; et le dispositif côté réseau envoie une signalisation de commande contenant des informations de type de sous-trame à un dispositif côté réseau dans un voisin par l'intermédiaire d'une interface radio. Du fait que la signalisation de commande de la présente cellule est envoyée au voisin par l'intermédiaire de l'interface radio dans les modes de réalisation de la présente invention, les informations de configuration concernant le voisin peuvent être acquises lorsque l'exigence de rapport de service de liaison montante/liaison descendante de la cellule est dynamiquement changée, améliorant les performances du système.
PCT/CN2012/073191 2011-03-29 2012-03-28 Procédé, système et dispositif pour notifier des informations de configuration de sous-trame et configurer une sous-trame WO2012130139A1 (fr)

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