WO2010083735A1 - 微基站和宏基站间数据帧调整方法、系统及微基站配置中心 - Google Patents

微基站和宏基站间数据帧调整方法、系统及微基站配置中心 Download PDF

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Publication number
WO2010083735A1
WO2010083735A1 PCT/CN2010/070027 CN2010070027W WO2010083735A1 WO 2010083735 A1 WO2010083735 A1 WO 2010083735A1 CN 2010070027 W CN2010070027 W CN 2010070027W WO 2010083735 A1 WO2010083735 A1 WO 2010083735A1
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WIPO (PCT)
Prior art keywords
base station
frame length
macro base
reserved
data frame
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PCT/CN2010/070027
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English (en)
French (fr)
Inventor
邵潇杰
彭程晖
梁文亮
李剑
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华为技术有限公司
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Priority claimed from CN200910127876A external-priority patent/CN101790171A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2010083735A1 publication Critical patent/WO2010083735A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W16/00Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/12Fixed resource partitioning
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/02Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04Large scale networks; Deep hierarchical networks
    • H04W84/042Public Land Mobile systems, e.g. cellular systems
    • H04W84/045Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B

Definitions

  • the application is submitted to the Chinese Patent Office on January 23, 2009, and the application number is 200910077597.
  • the invention name is "data between the micro base station and the macro base station.
  • the invention name is "data frame between the micro base station and the macro base station.
  • the priority of the Chinese Patent Application the entire disclosure of which is incorporated herein by reference.
  • the present invention relates to the field of communications technologies, and in particular, to a data frame adjustment method, system, and micro base station configuration center between a micro base station and a macro base station.
  • a Femtocel 1 Access Point (FAP) in a Worldwide Interoperability for Microwave Access (WiMAX) network is a low power WiMAX base station.
  • Such a base station provides a small range of wireless coverage, and is mainly used in an indoor home and a small home office (S0H0) environment, and thus may be referred to as a micro base station. It uses a wired broadband network, such as a DSL/IP network, to access WiMAX networks.
  • a wired broadband network may be a different carrier than a WiMAX network.
  • the terminal connects to the FAP through the air interface, and then the FAP accesses the WiMAX network through the wired broadband network, and the interaction with the signaling plane of the core network data of the WiMA network is carried by the wired broadband network.
  • FAP applications are imperative.
  • the frequency coverage of the FAP and the base station in the WiMAX network may overlap, and the FAP and the macro base station share the same.
  • the deployment scenario of the band resources such that there is a problem of co-channel interference between the FAP and the macro base station, thereby affecting the communication quality of the user terminal.
  • the FAP is allocated a carrier with interference lower than the interference threshold, and then the maximum uplink and downlink transmission is set by comparing the interference conditions of the macro base station and the FAP. Power, to achieve the purpose of reducing interference between FAP and macro base station.
  • the power control method can only control the interference of the macro base station to the FAP within the set interference threshold, and cannot eliminate the interference; in addition, in the carrier selection algorithm, if the existing carrier cannot If the conditions for reducing the interference between the FAP and the macro base station are satisfied, an error will be reported. At this time, the interference threshold needs to be increased. However, for some cases where the channel quality condition is poor, the interference cannot be well controlled after the interference threshold is increased.
  • the carrier of the modulated signal is a series of scattered orthogonal subcarriers, and a frame may contain multiple subcarrier allocation modes (such as PUSC, FUSC, AMC, etc.), and the conversion between them is uncertain. And very quickly, so it is difficult to judge which subcarriers are used, so the prior art reduces the interference by the carrier selection algorithm and does not apply to the WiMA network. Summary of the invention
  • Embodiments of the present invention provide a data frame adjustment method and system between a micro base station and a macro base station, and a micro base station configuration center, to eliminate co-channel interference between the micro base station and the macro base station.
  • An embodiment of the present invention provides a data frame adjustment method between a micro base station and a macro base station, including: adjusting a data frame of a macro base station, and reserving a reserved frame length in a data frame of the macro base station, where the macro base station Data frames are transmitted outside the reserved frame length;
  • An embodiment of the present invention further provides a micro base station configuration center, including:
  • An adjustment module configured to adjust a data frame of the macro base station, and reserve a reserved frame length in a data frame of the macro base station, where the data frame of the macro base station performs resource transmission outside the reserved frame length;
  • a configuration module configured to configure a data frame of a micro base station that is deployed in the same manner as the macro base station, and that is configured to perform a resource frame of the micro base station in a reserved frame length of the macro base station. transmission.
  • An embodiment of the present invention further provides a data frame adjustment system between a micro base station and a macro base station, including: a micro base station configuration center, a micro base station, and a macro base station, as described above,
  • the micro base station is configured to receive data frame information of the macro base station, the required downlink frame length, a required uplink frame length, and offset time information, which are sent by the micro base station configuration center, to adjust the micro base station.
  • Data frames are transmitted within a reserved frame length of the macro base station;
  • the macro base station is configured to receive data frame adjustment information sent by the micro base station configuration center, to adjust a downlink frame length and an uplink frame length reserved on a data frame of the macro base station.
  • the data frame adjustment method and system and the micro base station configuration center between the micro base station and the macro base station according to the embodiment of the present invention configure the structure of the data frame of the micro base station according to the acquired information, so that the data frame of the micro base station is
  • the resource may be transmitted within a reserved frame length of the data frame of the macro base station after the data frame of the macro base station is offset, that is, by reserving the data frame of the macro base station in the time domain, the macro base station is reserved.
  • the resource transmission on the data frame is separated from the resource transmission on the data frame of the micro base station, so that resource transmissions of the macro base station and the micro base station do not cause co-channel interference with each other.
  • FIG. 2 is a schematic flowchart of a first embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention
  • FIG. 3 is a schematic flowchart of a second embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention
  • FIG. 4 is a schematic structural diagram of data frames between a micro base station and a macro base station according to the present invention.
  • FIG. 5 is a schematic flowchart of a third embodiment of a data frame adjustment method between a micro base station and a macro base station according to the present invention.
  • FIG. 6 is a schematic flowchart of a fourth embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention
  • FIG. 7 is another schematic structural diagram of a data frame between a micro base station and a macro base station according to the present invention.
  • FIG. 8 is a schematic flowchart of a fifth embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention.
  • FIG. 9 is a schematic flowchart of a sixth embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention.
  • FIG. 10 is a schematic structural diagram of a first embodiment of a micro base station configuration center according to the present invention.
  • FIG. 11 is a schematic structural diagram of a second embodiment of a micro base station configuration center according to the present invention.
  • FIG. 12 is a schematic structural diagram of a third embodiment of a micro base station configuration center according to the present invention.
  • FIG. 13 is a schematic structural diagram of a fourth embodiment of a micro base station configuration center according to the present invention.
  • FIG. 14 is a schematic structural diagram of an embodiment of a data frame adjustment system between a micro base station and a macro base station according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic structural diagram of a FAP access system according to the present invention.
  • the FAP in the WiMAX network that is, the micro base station provides access services for WiMAX mobile terminals on the authorized spectrum, and the FAP itself accesses the core network of the WiMAX network through the wired broadband network.
  • the FAP in the WiMAX network is managed by a Network Access Provider (NAP) in the WiMAX network, and the other BSs are collectively referred to as a macro base station in the embodiment of the present invention.
  • NAP Network Access Provider
  • a security gateway SeGW
  • FAP Authentication and Authorization Accounting (AAA) server the SeGW establishes a connection with the FAP MA server through the subscription relationship:
  • the FAP AAA server completes the network access authentication and authorization and other management and maintenance work for the FAP; the FAP must first authenticate with the FAP AAA server in the WiMAX network. And authorization to start, to provide services for mobile terminals;
  • FAP AAA service The device is a logical entity. It can be located in different entities according to different scenarios.
  • the FAP AM server can be located in the Access Service Network (ASN), if the FAP and the network service provider ( Network Service Provider (NSSP), then the FAP AAA server can be located in the Connectivity Service Network (CSN), and can be deployed on the same physical entity or deployed in a separate physical entity with the AAA server in the WiMAX network.
  • ASN Access Service Network
  • NSSP Network Service Provider
  • CSN Connectivity Service Network
  • FAP Configuration Center FAP Configuration Center
  • FAP Configuration Center is mainly used for FAP parameter configuration, including some operations and processing functions. It is connected to SeGW, macro base station and FAP MA server, obtains information from these entities, and delivers processing results and configuration messages.
  • the configuration center is a logical entity and can generally be located in the ASN.
  • FIG. 2 is a schematic flowchart of a first embodiment of a data frame adjustment method between a micro base station and a macro base station according to the present invention. As shown in Figure 2, the following steps are included:
  • Step 201 Adjust a data frame of the macro base station, and reserve a reserved frame length in a data frame of the macro base station, where the data frame of the macro base station performs resource transmission outside the reserved frame length;
  • Step 202 Configure a data frame of the micro base station that is deployed in the coverage of the macro base station and is deployed in the same frequency as the macro base station, so that the resource frame is transmitted within the reserved frame length of the macro base station.
  • the micro base station is represented by FAP, and the BS represents a macro base station.
  • the BS is at least one BS or all BSs that jointly cover the FAP and are deployed in the same frequency as the FAP;
  • the FAP is a reserved frame length of the shared BS that is deployed in the coverage of the BS and is co-located with the BS.
  • the FAP configuration center adjusts the data frame of the BS according to the information it obtains, and adjusts the data frames of all BSs deployed in the same frequency as the FAP to reduce co-channel interference.
  • the adjustment of the data frame of the BS may be performed only when the first FAP that is deployed in the same frequency as the BS enters the coverage of the BS and the coverage of the last FAP that is deployed in the same frequency as the BS exits the BS.
  • the adjustment is made, or the data frame of the BS is adjusted in real time with different FAPs entering and exiting the coverage of the BS.
  • the FAP configuration center also configures the FAP data frame that is deployed in the same coverage area as the BS and is deployed in the same frame as the BS to perform resource transmission within the reserved frame length of the BS.
  • the data frame adjustment method between the micro base station and the macro base station separates the resource transmission on the data frame of the BS and the resource transmission on the data frame of the FAP by reserving the data frame of the BS in the time domain. On, so that the resource transmission of the BS and the FAP does not cause co-channel interference with each other.
  • FIG. 3 is a schematic flowchart diagram of a second embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention. As shown in Figure 3, the following steps are included:
  • Step 301 Obtain bandwidth information of the FAP and data frame information of the BS.
  • Step 302 Calculate a required downlink frame length and a required uplink frame length of the data frame of the FAP according to the bandwidth information of the FAP.
  • Step 303 Adjust a data frame of the BS, and reserve a reserved frame length in a data frame of the BS, where the data frame of the BS performs resource transmission outside the reserved frame length;
  • Step 304 Send the data frame information of the BS, the required downlink frame length of the FAP data frame, the required uplink frame length, and the preset offset time information to the FAP, to adjust the reserved frame length of the FAP data frame in the BS.
  • the resource frame is configured to include a downlink subframe and an uplink subframe, and a transmission/reception transition slot (Transmi t/receive Transit Gap, TTG) is left between the downlink subframe and the uplink subframe. ), a Receive/Transmission Transit Gap (RTG) is left between the uplink subframe and the downlink subframe; the data frame information generally includes a frame length of the data frame, an uplink subframe, and a downlink. The ratio information of the subframe, the length of the TTG and the RTG.
  • TTG transmission/reception transition slot
  • RTG Receive/Transmission Transit Gap
  • the FAP configuration center needs to obtain some basic information about the FAP, such as the location information of the FAP,
  • the FAP configuration center calculates the required downlink frame length and the required uplink frame length of the FAP data frame according to the bandwidth information of the FAP; the FAP configuration center uses the data frame information of the BS and the data frame of the micro base station.
  • the required downlink frame length and required uplink frame length and offset time information are sent to the FAP, and the FAP configures the structure of its data frame according to the information it receives, so that its data information can be in a section of the data frame of the offset BS.
  • the BS data frame is transmitted within the reserved frame length, that is, the data of the BS and the data of the FAP are separated and transmitted in the time domain, so that the same frequency interference does not occur with each other.
  • the frame length is reserved on the data frame of the BS, that is, some time slot resources are vacated, and the data frame of the BS does not perform resource transmission within the reserved frame length, and all the same-frequency deployments under the coverage of the BS are performed.
  • the FAP can share the reserved frame length of the BS, and perform downlink and uplink resource transmission only within the reserved frame length of the BS, and the remaining time slots do not perform resource transmission.
  • the FAP When the FAP is located in the range covered by multiple BSs, all BSs that cover the FAP and have the same frequency band as the FAP working band need to reserve time slot resources for the FAP at the same time. According to the maximum bandwidth allowed by the FAP, the time slot resources required for the downlink and uplink transmission of the FAP can be separately calculated, so that the frame lengths T1 and T2 that the BS needs to reserve can be obtained, which are required for FAP downlink and uplink resource transmission, respectively.
  • Frame length The BS vacates the frame length of T1 from the position where A tl is started at the beginning of each frame through resource scheduling, and vacates the frame length of T2 from the position of At2 at the beginning of each frame, and reserves the corresponding frame length.
  • the FAP synchronization frame length is the same as the frame length of the data frame of the BS, and the length of the downlink and uplink subframes is divided according to a certain ratio.
  • the frame length of the downlink subframe is longer than the maximum downlink frame required by the FAP actually required by the FAP.
  • the time slot resource for performing downlink resource transmission is large, and the frame length of the uplink subframe is longer than the maximum uplink frame required by the FAP actually required by the FAP, that is, the time slot resource for uplink resource transmission is large;
  • the data frame of the FAP is The start time offsets the start time A tl of the data frame of the BS.
  • the frame length from each frame is used for downlink resource transmission, and starts at a position ⁇ X2 - ⁇ tl from the beginning of each frame.
  • the frame length of T2 is transmitted as an uplink resource, and the remaining time slots do not transmit resources. This is achieved
  • the data frame of the BS is separated from the signal on the data frame of the FAP for transmission on the domain.
  • the values of A tl and A t 2 are fixed values, and may refer to the maximum downlink frame length required for the FAP required by the FAP data frame, the maximum uplink frame length required by the FAP, and the frame lengths of the FAP downlink subframe and the uplink subframe. set up. Resource transmission is performed by using the data frame structure shown in FIG.
  • the downlink data of the transmitter on the BS in the BS is as shown in FIG.
  • the start time of the frame is turned on.
  • the transmitter is turned off, and the downlink data frame of the FAP is transmitted in the subsequent T1 time.
  • the transmitter of the BS is turned on again until the downlink data frame of the BS ends.
  • the receiver on the BS also needs to receive the uplink data frame by turning it on and off twice.
  • FIG. 5 is a schematic flowchart diagram of a third embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention.
  • a FAP when a FAP is connected to the network, if there is a BS that covers the FAP and is deployed in the same frequency as the FAP, the structure of the data frame of the FAP is configured.
  • the specific steps are as follows:
  • Step 401 The FAP initiates the network access authentication request, and the FAP AAA server performs the authentication and authorization. After the FAP network authentication is successful, the FAP AAA server determines the maximum bandwidth allowed to be issued to the FAP, and sends the FAP network access authentication success message to the FAP and the FAP. / or SeGW.
  • Step 402 After receiving the FAP network access authentication success message sent by the FAP AAA server, the SeGW may obtain the FAP configuration information in the FAP configuration center, that is, the FAP network authentication success message received by the SeGW carries the FAP AAA.
  • the bandwidth information of the FAP determined by the server is the maximum bandwidth.
  • the SeGW initiates a FAP configuration request to the FAP configuration center
  • the SeGW also carries the bandwidth information in the FAP configuration request
  • the SeGW also accesses the FAP through the FAP AAA server.
  • the location information of the obtained FAP is carried in the FAP configuration request and is reported to the FAP configuration center.
  • the FGW does not carry the bandwidth information in the FAP network authentication success message.
  • the SeGW initiates a FAP configuration request to the FAP configuration center.
  • the FAP configuration request does not carry the bandwidth information.
  • the FAP configuration center obtains the bandwidth information from the FAP AAA server after receiving the FAP configuration request, and obtains the FAP location information when the FAP AAA server interacts with the FAP. Therefore, the FAP configuration center can also obtain the bit from the FAP MA server. Set the information.
  • the foregoing step 402 is a FAP configuration request initiated by the SeGW, and the step 402 may be replaced by the step 402'.
  • the FAP receives the FAP network authentication success message sent by the FAP AAA server
  • the FAP initiates a FAP to the FAP configuration center.
  • the configuration request is also provided in the form of obtaining the bandwidth information and the location information in the step 402, that is, the FAP configuration request is carried in the FAP configuration request or the FAP configuration center is obtained from the FAP AAA server.
  • Step 403 The FAP configuration center stores the bandwidth information of the FAP in a bandwidth list.
  • the FAP configuration center mainly acquires and saves some information of the FAP and the BS, so that it calculates some configuration information.
  • the BS ID can be obtained from the FAP configuration request.
  • Step 405 Initiate a request for acquiring data frame information of the BS according to the location information of the BS or the BS ID, and obtain frame information of the BS and save the frame information.
  • the FAP configuration center is already The data frame information of the BS is obtained; in the above case, the FAP configuration center does not need to initiate a request to the BS to acquire the data frame information of the BS.
  • the data frame information of the BS includes the frame length!
  • the frame length L includes a total length of a downlink subframe, a TTG, an uplink subframe, and an RTG.
  • Step 406 The FAP configuration center presets a first offset time ⁇ ⁇ and a second offset time A t2 ;
  • the difference between the second offset time ⁇ t2 and the first offset time ⁇ tl is greater than the sum of the TTGs of the data frames of the maximum downlink frame length Tl ⁇ x BS required by the FAP, that is, ⁇ t2- ⁇ t >Tl mx +TTG, and the second offset time ⁇ t2 is smaller than the difference between the frame length L of the BS and the maximum upstream frame length T2 required by the FAP, that is, L_ ⁇ t2 > T2 ⁇ .
  • the ⁇ ⁇ 2 value can be considered simultaneously to make the reserved two-frame lengths fall in the DL and UL of the BS, respectively, and the frame length reserved by the BS in the UL corresponds to the UL of the FAP, so that the resources are averaged.
  • the reserved gap does not exceed the boundary of the DL or UL.
  • Step 407 The FAP configuration center calculates the required downlink frame length T1 and the required uplink frame length ⁇ 2 according to the bandwidth information of the FAP, that is, the maximum required bandwidth of the FAP, respectively, for respectively transmitting the downlink and uplink resources of the FAP, and
  • the T1 and ⁇ 2 values are stored in the frame length list.
  • Step 408 The FAP configuration center determines whether there are other FAPs deployed in the same range as the BS in the coverage of the BS; if not, step 409 is performed; otherwise, step 410 is performed;
  • Step 409 the first offset time A t l, the second offset time A t2 and the required downlink frame length T1 and the required uplink frame length T2 are sent to the BS, and step 411 is performed;
  • Step 410 The FAP is not the first FAP in the same coverage area of the BS to be deployed in the same frequency as the BS.
  • the FAP configuration center is already in the first FAP network that is deployed in the same frequency as the BS.
  • ⁇ t2 is sent to the BS; at this time, it is only necessary to compare the required downlink frame length and the required uplink frame of T1 and T2 with the corresponding other FAPs deployed in the frame length list in the same frequency as the BS. Long, after comparison, there may be the following four In the case, the data frame adjustment information that needs to be sent to the BS is different for different situations.
  • Case 1 After comparison, the ⁇ is larger than the required downlink frame length of other FAPs deployed in the same frame length as the frame length list, and T2 is also larger than other FAPs stored in the frame length list and deployed in the same frequency as the BS. If the required uplink frame is long, the FAP configuration center sends T1 and T2 to the BS, and performs step 411;
  • T1 is greater than the required downlink frame length of other FAPs deployed in the same frame length as the frame length list, and T2 is not greater than other FAPs stored in the frame length list and deployed in the same frequency as the BS. If the required uplink frame is long, the FAP configuration center sends T1 to the BS, and performs step 411b;
  • T1 is not greater than the required downlink frame length of other FAPs deployed in the same frame length as the frame length list, and T2 is greater than other FAPs stored in the frame length list and deployed in the same frequency as the BS. If the required uplink frame is long, the FAP configuration center sends T2 to the BS, and performs step 411c;
  • Step 411 On the BS, configure the data frame, specifically: by resource scheduling, after the Atl after the data frame of the BS starts, reserve the same first reserved frame length as T1, and the data in the BS. After ⁇ ⁇ 2 after the start of the frame, the same second reserved frame length as ⁇ 2 is reserved, as shown in FIG. 4 .
  • Step 411b After resource scheduling, after the A tl after the start of the data frame of the BS, the same first reserved frame length as T1 is reserved, and the second reserved frame length remains unchanged;
  • Step 411c Through resource scheduling, the first reserved frame length remains unchanged, and after the A t2 after the start of the data frame of the BS, the second reserved frame length that is the same as T2 is reserved.
  • Step 412 After completing the configuration of the data frame, the BS returns an acknowledgement information to the FAP.
  • Step 413 The FAP configuration center sends the data frame information of the BS and ⁇ ⁇ 1, ⁇ ⁇ 2, T1, and ⁇ 2 to the FAP.
  • Step 414 The FAP performs the configuration of the data frame according to the data frame information of the BS.
  • the frame length of the data frame of the synchronous FAP is equal to the frame length of the data frame of the BS, and a reasonable ratio of the length of the downlink subframe to the uplink subframe is set.
  • the reasonable setting criterion of the ratio of DL and UL in the data frame of FAP is: ensure that the lengths of DL and UL are greater than the maximum possible values of T1 and T2, respectively;
  • the frame length of T1 is used for downlink resource transmission from each frame, and the frame length of T2 is used as the uplink resource transmission at the position starting from the beginning of each frame, and the remaining slots do not transmit resources.
  • the start time of the data frame of the FAP is offset from the start time of the data frame of the BS by ⁇ tl time, as shown in FIG. 4 .
  • Step 415 After completing the configuration of the data frame, the FAP returns a confirmation message to the FAP configuration center.
  • the data frame of the FAP and the clock synchronization server are also clocked. So far, the FAP and the BS complete the dynamic data frame adjustment process when the network is connected, and the same-frequency interference between the FAP and the BS can be well eliminated in the case of saving the bandwidth resources of the BS as much as possible.
  • FIG. 6 is a schematic flowchart diagram of a fourth embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention.
  • the FAP After the FAP is successfully retired, the FAP that is backed out will release its occupied bandwidth.
  • the BS that covers the FAP and deployed in the same frequency as the FAP can adjust its reserved bandwidth resources, as shown in Figure 6. Including the following steps:
  • Step 501 The SeGW reports the bandwidth released by the FAP of the network to the FAP configuration center, or the FAP AAA server sends the information to the FAP configuration center.
  • Step 502 The FAP configuration center determines whether there is another FAP deployed in the same frequency as the BS in the area of the BS that covers the FAP. If yes, go to step 503; otherwise, go to step 506.
  • Step 503 Compare, according to the location information of the FAP, T1 and T2 with the required downlink frame length and the required uplink frame length of the corresponding other FAPs deployed in the same frequency of the BS, if T1 and T2 If the required downlink frame length and the required uplink frame length of the data frame of the FAP deployed in the same frequency as the BS are greater than the required downlink frame length in the reselected list and the required uplink frame length The maximum value is sent to the BS, and step 504a is performed; or if the T1 is greater than the required downlink frame length of the data frame of the FAP deployed in the same frequency as the BS, the required downlink frame length in the list is reselected.
  • the maximum value in the packet is sent to the BS, and step 504b is performed; or if the T2 is greater than the required uplink frame length of the data frame of the FAP deployed in the same frequency as the BS, the required uplink in the list is reselected.
  • the maximum value in the frame length is sent to the BS, and step 504c is performed.
  • Step 504a The BS adjusts the downlink frame length and the uplink frame length reserved on the data frame according to the received T1 and T2.
  • Step 504b The BS adjusts the downlink frame length reserved on the data frame according to the received T1.
  • Step 504c The BS adjusts the uplink frame length reserved on the data frame according to the received ⁇ 2.
  • Step 505 After completing the configuration of the data frame, the BS sends a confirmation message to the FAP configuration center, and the process ends.
  • Step 506 The FAP configuration center triggers the BS to cancel the downlink frame length and the uplink frame length reserved on the data frame. So far, the BS completes the dynamic data frame adjustment process when the FAP is backed out, and can eliminate the co-channel interference between the FAP and the BS well when the bandwidth of the BS is saved as much as possible.
  • the FAP configuration center may also be preset.
  • the first reserved frame length of the BS is the maximum downlink frame length required by the FAP; or the second reserved frame length of the preset BS is the maximum uplink frame length required by the FAP; or the first reserved frame length of the preset BS is FAP.
  • the maximum downlink frame length is required, and the second reserved frame length of the BS is the maximum uplink frame length required by the FAP.
  • Step 408 ′ the FAP configuration center determines whether there are other FAPs deployed in the same range as the BS in the coverage of the BS; if not, executing step 409 ′; otherwise, performing step 410 ′;
  • Step 409 ′ if only the first reserved frame length or the second reserved frame length is preset in step 406, the first partial offset is The shift time Atl, the second offset time At2, and the first reserved frame length and T2 or the second reserved frame length and T1 are sent to the BS, and step 411' is performed; if the step 406 is added, the preset first pre-step is added. Sending a frame length and a second reserved frame length, sending a first offset time ⁇ 1, a second offset time At2, and a first reserved frame length and a second reserved frame length to the BS, and performing step 41;
  • the first reserved frame length is the maximum downlink frame length required by the preset FAP
  • the second reserved frame length is the maximum uplink frame length required by the preset FAP. Therefore, once set on the BS, as long as the BS is overwritten There is also a FAP deployed in the same frequency as the BS.
  • the reserved frame length does not need to be adjusted again, that is, step 410' may not be performed.
  • only one of the first reserved frame length and the second reserved frame length may be set as needed.
  • the reserved frame length of the uplink subframe of the BS may also need to be adjusted according to T2, or the downlink of the BS.
  • the reserved frame length of the frame may also need to be adjusted according to T1, that is, step 410' needs to be performed.
  • Step 410 ′ indicating that the FAP is not the first FAP deployed in the same frequency range as the BS in the coverage of the BS
  • the FAP configuration center has sent the Atl, At2, and the first reserved frame length to the FAP that was previously deployed in the same network as the BS.
  • BS at this time, it is required to compare the required uplink frame length of T2 with the corresponding other FAPs deployed in the frame length list in the same frequency as the BS, if T2 is required by other FAPs deployed in the same frequency as the BS. If the uplink frame grows, send T2 to the BS;
  • the FAP configuration center has sent the Atl, At2, and the second reserved frame length to the BS before the first FAP enters the network.
  • the required downlink frame length of the corresponding other FAPs deployed in the same length as the BS is stored in the frame length list. If T1 is longer than other required downlink frames of the FAP deployed in the same frequency as the BS, T1 is Send to BS.
  • Step 411 ′ configuring, on the BS, the data frame according to the received data frame adjustment information; specifically, the data frame adjustment information may include Atl, At2, the first reserved frame length and the second reserved frame length, Or include Atl, ⁇ 2, the first reserved frame length and ⁇ 2, or include Atl, At2, T1 and the second reserved frame length.
  • Step 412 ′ after completing the configuration of the data frame, the BS returns an acknowledgement information to the FAP.
  • the BS when the FAP is backed out, if the first reserved frame length and the second reserved frame length are preset, the BS will release the data frame after the last FAP deployed in the same frequency as the BS is retired.
  • the reserved frame length is not adjusted at any time with the changes of T1 and ⁇ 2.
  • the real-time adjustment may occupy a little more BS bandwidth resources, it can also eliminate the co-channel interference between the FAP and the BS. The time for signaling transmission during adjustment is greatly reduced.
  • FIG. 7 is another schematic structural diagram of a data frame between a micro base station and a macro base station according to the present invention.
  • the frame lengths of T1 and ⁇ 2 are reserved on both sides of the TTG. Since the DL and UL lengths of all FAPs are the same as required, the DL of the FAP must be not less than the downlink frame length required for the largest possible FAP; for the synchronization between the FAPs, the frame length of the DL Also fixed.
  • the DL frame length and the UL frame length to be occupied by the required downlink frame length T1 and the required downlink frame length T2 are calculated, wherein T2 can be adjusted according to the uplink frame length required by each FAP, and can be squeezed.
  • the uplink resources of the BS are expanded by T2.
  • ⁇ 2 may also be set to the maximum uplink frame length required by the FAP according to the maximum downlink frame length and the maximum bandwidth required by the FAP.
  • the data frame of the FAP uses the downlink resource according to the allocated time slot on the DL, and uses the uplink resource according to the allocated time slot on the UL, and the remaining time slots cannot be used.
  • the adjusted data frame structure of FIG. 7 makes the BS only need to be turned on and off once in one frame, and the data frame structure shown in FIG. The adjustments are reduced once compared to each other, thereby reducing the need for hardware and software for the BS.
  • FIG. 8 is a schematic flowchart diagram of a fifth embodiment of a data frame adjustment method between a micro base station and a macro base station according to the present invention.
  • a scenario in which a frame length is reserved on both sides of a TTG of a data frame of a BS is as shown in FIG. 7.
  • a fixed first reserved frame length is reserved on a downlink subframe of the BS before the TTG.
  • the reserved frame length is equal to the maximum downlink frame length required by the FAP, and the frame length reserved on the downlink subframe of the BS after the TTG may be fixed or may be adjusted in real time with the ⁇ 2.
  • This embodiment is reserved on the downlink subframe of the BS after the TTG.
  • the frame length is also a fixed second reserved frame length, and the second reserved frame length is equal to the maximum uplink frame length required by the FAP. Since the frame length reserved on the BS is not changed, only the reservation on the data frame needs to be initiated in the coverage of the BS and the first FAP deployed in the same frequency as the BS is in the coverage of the BS. The time slot of the last FAP deployed in the same frequency as the BS is released. The reserved time slot resources are released. The intermediate FAP does not need to be adjusted in the process of network access and network redirection, and only needs to send the corresponding data frame to the FAP. Configuration parameters. Moreover, the information of the data frame of the BS in this embodiment is stored in the FAP configuration center, and does not need to be acquired again to the BS. As shown in Figure 8, the following steps are included:
  • Step 701 The FAP initiates the network access authentication request, and the FAP AAA server performs the authentication and authorization. After the FAP network authentication is successful, the FAP AAA server determines the maximum bandwidth allowed to be issued to the FAP, and sends the FAP network access authentication success message to the FAP and the FAP. / or SeGW.
  • Step 702 The SeGW and/or the FAP request the location information of the bandwidth information and the FAP through the FAP configuration request, and notify the FAP configuration center by the SeGW or the FAP, or the FAP configuration center may directly obtain the FAP AAA server; or Same as step 402 or step 402' in the above embodiment.
  • Step 703 The FAP configuration center directly searches for the data frame information of the BS that covers the FAP according to the information about the FAP location information and the access network deployment data.
  • the first reserved frame length of the BS be the maximum downlink frame length T1 required by the FAP.
  • the second reserved frame length of the preset BS is the maximum uplink frame length T2 required by the FAP.
  • the preset parameter A t, the first reserved frame length, and the second reserved frame length of the step 704 need only be set before the FAP configuration center, and the timing relationship is not limited.
  • Step 705 The FAP configuration center calculates the downlink frame length T1 and the required uplink frame length T2 of the FAP of the network according to the bandwidth information of the FAP, that is, the maximum required bandwidth of the FAP.
  • Step 706 The FAP configuration center determines whether the bandwidth resource has been reserved on the BS that covers the FAP, that is, whether the FAP is the first FAP that is deployed in the coverage area of the BS and is deployed in the same frequency as the BS. 707; Otherwise, step 710 is performed.
  • Step 707 Send the third offset time ⁇ t, the maximum downlink frame length T1, and the maximum uplink frame length T2 to the BS step 708, and configure the data frame on the BS, specifically: by resource scheduling, in the offset
  • the start position of the data frame of the BS is reserved for the first reserved frame length T1 after the third offset time A t and before the start of the TTG of the data frame of the BS, and is pre-determined after the end of the TTG of the data frame immediately following the BS Leave the second reserved frame length ⁇ 2 ⁇ ) as shown in Figure 7.
  • Step 709 After the BS completes the configuration of the data frame, the BS returns an acknowledgement message to the FAP.
  • Step 710 The FAP configuration center sends the data frame information of the BS, the third offset time ⁇ t, the required downlink frame length T1, and the required uplink frame length T2 to the FAP.
  • Step 711 The FAP performs the configuration of the data frame according to the data frame information of the BS, and the frame length of the data frame of the synchronous FAP is equal to the frame length of the data frame of the BS, and a reasonable ratio of the length of the downlink subframe to the uplink subframe is set;
  • the data frame of the FAP carries the data transmission in T1 after the A t after the start of the data frame of the offset BS, and carries the data transmission in T2 after the TTG of the data frame immediately following the BS.
  • T1 starts from the beginning of T1
  • T2 starts from the beginning of 2 dishes and does not necessarily occupy the entire T2.
  • Step 712 After completing the configuration of the data frame, the FAP returns a confirmation message to the FAP configuration center.
  • the FAP data frame and the clock synchronization server are also clocked. In this way, the transmission of the data signals in the BS and the FAP can be separated in the time domain, eliminating the co-channel interference between the two.
  • FIG. 9 is a schematic flowchart diagram of a sixth embodiment of a method for adjusting a data frame between a micro base station and a macro base station according to the present invention. After the FAP is successfully retired, the FAP that is backed out will release its occupied bandwidth. In the scenario where the fixed maximum time slot is reserved on the BS, as shown in Figure 9, the following steps are included:
  • Step 801 The SeGW reports the bandwidth released by the FAP of the network to the FAP configuration center, or the FAP AAA server sends the information to the FAP configuration center.
  • Step 802 The FAP configuration center queries whether all FAPs deployed in the same frequency as the BS are backed out under the coverage of the BS. If yes, step 803 is performed; if not, the process ends.
  • Step 803 The FAP configuration center notifies the BS to release the reserved bandwidth resource.
  • Step 804 The BS cancels the reserved frame length by using resource scheduling, and allows the data frame on the BS to use all the time slots.
  • Step 805 After the data frame configuration of the BS is completed, return an acknowledgement message to the FAP configuration center.
  • the BS completes the dynamic data frame adjustment process when the FAP is offline.
  • the fixed maximum time slot is reserved on the BS, although some bandwidth information on the BS is sacrificed, some FAP configuration centers can be omitted. Complex processing.
  • the FAP selects one working frequency band to perform the same frequency deployment in the working frequency bands of all the BSs that cover the FAP, and each BS that covers the FAP and has the same working frequency band as the FAP needs to simultaneously
  • the time slot resource is reserved for the FAP, that is, the same process is performed for each BS that is the same as the working frequency band of the FAP, and the steps are the same. The steps are basically the same, and are not described here.
  • FIG. 10 is a schematic structural diagram of a first embodiment of a micro base station configuration center according to the present invention.
  • the micro base station configuration center includes an adjustment module 91 and a configuration module 92.
  • the adjustment module 91 is configured to adjust the data frame of the macro base station, and reserve the reserved frame length in the data frame of the macro base station, and the data frame of the macro base station transmits the resource outside the reserved frame length;
  • the data frame of the micro base station in the coverage of the macro base station and deployed in the same frequency as the macro base station is used to perform resource transmission within the reserved frame length of the macro base station.
  • the micro base station configuration center provided in this embodiment separates the data transmission on the data frame of the macro base station and the resource transmission on the data frame of the micro base station by reserving the data frame of the macro base station in the time domain, thereby The resource transmissions of the macro base station and the micro base station are not caused to generate co-channel interference with each other.
  • the method for adjusting the data frame between the micro base station and the macro base station is not described here.
  • FIG. 11 is a schematic structural diagram of a second embodiment of a micro base station configuration center according to the present invention.
  • the micro base station configuration center includes: a first obtaining module 93, a second obtaining module 94, and a calculating module 95, in addition to the adjusting module 91 and the configuration module 92 of the foregoing embodiment.
  • the first obtaining module 93 is configured to acquire the bandwidth information of the micro base station
  • the second obtaining module 94 is configured to obtain the data frame information of the macro base station that covers the micro base station
  • the calculating module 95 is configured to obtain the data according to the first acquiring module 93.
  • the bandwidth information of the micro base station is calculated, and the required downlink frame length and the required uplink frame length of the data frame of the micro base station are calculated.
  • the configuration module 92 may specifically include: a sending submodule 921, configured to send preset offset time information.
  • the data frame of the micro base station is configured according to the information sent by the sending submodule 921 to adjust the data frame of the micro base station to be transmitted within the reserved frame length of the macro base station.
  • the data frame includes a downlink subframe and an uplink subframe, and a transmission/reception transition slot (TTG) is left between the downlink subframe and the uplink subframe, and a reception/transmission is left between the uplink subframe and the downlink subframe.
  • Conversion time slot (RTG) data frame information includes frame length, ratio of uplink subframe and downlink subframe, TTG and RTG; offset time information is used to set data frame of downlink transmission of micro base station and data frame of uplink transmission Start time.
  • the micro base station configuration center provided in this embodiment separates the data transmission on the data frame of the macro base station and the resource transmission on the data frame of the micro base station by reserving the data frame of the macro base station in the time domain, thereby The resource transmissions of the macro base station and the micro base station are not caused to generate co-channel interference with each other.
  • the method for adjusting the data frame between the micro base station and the macro base station is not described here.
  • FIG. 12 is a schematic structural diagram of a third embodiment of a micro base station configuration center according to the present invention.
  • the micro base station configuration center may include: an adjustment module 91, a configuration module 92, a first acquisition module 93, a second acquisition module 94, and a calculation module 95.
  • a first preset module 96 configured to preset offset time information, where the offset time information includes a first offset time and a second offset time, or a third offset time; wherein the second offset time is first
  • the difference between the offset time is greater than the sum of the maximum downlink frame length required by the micro base station and the TTG of the data frame of the BS, and the second offset time is smaller than the difference between the frame length and the maximum uplink frame length required by the micro base station.
  • the three offset time is smaller than the difference between the downlink subframe length of the macro base station and the maximum downlink frame length required by the micro base station.
  • the second preset module 97 is configured to preset the first reserved frame length of the macro base station to be the maximum downlink frame length required by the micro base station, and/or the second reserved frame length of the preset macro base station is the maximum required by the micro base station.
  • the upstream frame is long.
  • the adjusting module 91 may specifically include: a first determining sub-module 911, configured to determine whether there are other micro-base stations deployed in the same frequency as the macro base station in the coverage of the macro base station; and the first processing sub-module 912 is configured to be used in the first
  • the determining sub-module 911 determines that there is no other micro-base station deployed in the same frequency as the macro base station
  • the first offset time, the second offset time, and the required downlink frame length and the required uplink frame length are sent to the macro base station.
  • the macro base station reserves the same first reserved frame length as the required downlink frame length, and offsets the start position of the data frame by the second offset.
  • the sub-module 913 is configured to: when the first judging sub-module 911 determines that other inter-frequency deployment micro-base stations exist, compare the required downlink frame length and the required uplink frame length with corresponding micro-base stations deployed in the same frequency as the macro base station.
  • the required downlink frame length of the data frame and the required uplink frame length if the required downlink frame length and the required uplink frame length are respectively greater than the required downlinks of other data frames of the micro base station deployed in the same frequency as the macro base station
  • the frame length and the required upstream frame length will be the required downstream frame length.
  • the macro base station And transmitting to the macro base station according to the required uplink frame length, after the macro base station offsets the first offset time of the start position of the data frame, reserves the first reserved frame length that is the same as the required downlink frame length, and is biased After the second offset time of the start position of the data frame is moved, the second reserved frame length that is the same as the required uplink frame length is reserved; or if the required downlink frame length is greater than other micro-station deployments of the macro base station
  • the required downlink frame length of the data frame of the base station is sent to the macro base station, and the macro base station reserves the required downlink frame after offsetting the first offset time of the start position of the data frame.
  • the same first reserved frame length is long; or if the required uplink frame length is longer than the required uplink frame length of other data frames of the micro base station deployed in the same frequency as the macro base station, the required uplink frame length is sent to the Acer
  • the macro base station reserves the second reserved frame length that is the same as the required uplink frame length; or compares the required uplink frame length with the corresponding other The required uplink frame length of the micro base station deployed by the macro base station in the same frequency, If the required uplink frame length is longer than the required uplink frame length of the data frame of the other micro-base station deployed in the same frequency as the macro base station, the required uplink frame length is sent to the macro base station, and the macro base station offsets its data frame. After the third offset time of the start position and before the start of the TTG of its data frame, the first reserved frame length is reserved, and the second same length as the required uplink frame length is reserved after the end of the TTG immediately following its data frame Reserved frame length
  • the micro base station configuration center provided in this embodiment separates the data transmission on the data frame of the macro base station and the resource transmission on the data frame of the micro base station by reserving the data frame of the macro base station in the time domain, thereby The resource transmissions of the macro base station and the micro base station are not caused to generate co-channel interference with each other.
  • the method for adjusting the data frame between the micro base station and the macro base station is not described here.
  • FIG. 13 is a schematic structural diagram of a fourth embodiment of a micro base station configuration center according to the present invention.
  • the micro base station configuration center includes the adjustment module 91, the configuration module 92, the first acquisition module 93, the second acquisition module 94, the calculation module 95, the first preset module 96, and the In addition to the preset module 97, the adjustment module 91 may further include:
  • the second processing sub-module 914 is configured to: when the first reserved frame length of the preset macro base station is the maximum downlink frame length required by the micro base station, the preset first offset time and the second offset time, the micro base station The required maximum downlink frame length and the required uplink frame length are sent to the macro base station, and after the first base station offsets the start position of the data frame, the macro base station reserves the first reserved frame length and offsets it.
  • the second reserved frame length is reserved according to the required uplink frame length; or when the second reserved frame length of the preset macro base station is the maximum uplink frame length required by the micro base station Transmitting the preset first offset time and the second offset time, the required downlink frame length, and the maximum uplink frame length required by the micro base station to the macro base station, where the macro base station offsets the start position of the data frame.
  • the first reserved frame length is reserved according to the required downlink frame length, and the second reserved frame length is reserved after offsetting the start position of the data frame by the second offset time; or
  • the first reserved frame length of the macro base station is the maximum downlink frame length required by the micro base station, and the second pre-frame of the macro base station.
  • the second reserved frame length is reserved; or when the first reserved frame length of the preset macro base station is the maximum downlink frame length required by the micro base station, and the second reserved frame of the macro base station When the length of the maximum uplink frame required by the micro base station is long, the preset third offset time and the maximum downlink frame length required by the micro base station and the maximum uplink frame length required by the micro base station are transmitted to the macro base station, and the macro base station offsets After the third offset time of the start position of the data frame and before the start of the TTG of the data frame, the first reserved frame length is reserved, and the second reserved frame length is reserved after the end of the TTG immediately following the data frame. .
  • the above-mentioned micro base station configuration center further includes a module related to data frame adjustment when the network is disconnected, and the micro base station configuration center shown in FIG. 13 in this embodiment is taken as an example.
  • the frame length reserved on the data frame of the macro base station may need to be changed according to the required frame length of the micro base station:
  • the third obtaining module 971 is configured to acquire the bandwidth information released by the micro base station and the required downlink frame length and the required uplink frame length after the micro base station successfully exits the network.
  • the second determining module 972 is configured to determine the coverage of the macro base station. Whether there are multiple micro base stations deployed in the same frequency as the macro base station; the second comparison processing module 973 is configured to: when the second determining module 972 determines that there are other micro base stations deployed in the same frequency as the macro base station, according to the micro base station.
  • the location information and the information obtained by the third obtaining module 971, the required downlink frame length and the required uplink frame length are the required downlink frames of the corresponding micro-base stations deployed in the same manner as the macro base station stored in the list.
  • the required downlink frame length in the reselection list is reselected. And the maximum value of the required uplink frame length, and sends it to the macro base station to adjust the downlink frame length and the uplink frame length reserved on the data frame of the macro base station, or if the required downlink is required If the frame length is longer than the required downlink frame length of the data frame of the other micro base station deployed in the same frequency as the macro base station, the maximum value of the required downlink frame length in the list is reselected and sent to the macro base station.
  • the maximum value of the required uplink frame length is sent to the macro base station to adjust the uplink frame length reserved on the data frame of the macro base station.
  • the third processing module 974 is configured to determine at the second determining module 972. When there is no other micro base station deployed in the same frequency as the macro base station, the downlink frame length and the uplink frame length reserved on the data frame of the macro base station are cancelled.
  • the frame length reserved on the data frame of the macro base station may also include:
  • the third judging module 981 is configured to determine whether there are multiple micro base stations deployed in the same frequency as the macro base station in the coverage of the macro base station, and the fourth processing module 982 is configured to determine, in the third determining module 981, that other macro bases are present.
  • the micro base station deployed in the same frequency station maintains the downlink frame length and the uplink frame length reserved on the data frame of the macro base station;
  • the module 981 determines that there is no other micro base station deployed in the same frequency as the macro base station, and cancels the downlink frame length and the uplink frame length reserved on the data frame of the macro base station.
  • the micro base station configuration center provided in this embodiment separates the data transmission on the data frame of the macro base station and the resource transmission on the data frame of the micro base station by reserving the data frame of the macro base station in the time domain, thereby The resource transmissions of the macro base station and the micro base station are not caused to generate co-channel interference with each other.
  • the method for adjusting the data frame between the micro base station and the macro base station is not described here.
  • FIG. 14 is a schematic structural diagram of an embodiment of a data frame adjustment system between a micro base station and a macro base station according to the present invention.
  • the system includes: a micro base station configuration center 1, a micro base station 2, and a macro base station 3 as described in the above embodiments.
  • the micro base station configuration center 1 is as described in FIG. 10, FIG. 11, FIG. 12 or FIG. 13, and details are not described herein again.
  • the micro base station 2 is configured to receive data frame information, a required downlink frame length, and a required uplink frame length and offset time information of the macro base station sent by the micro base station configuration center 1, to adjust the data frame of the micro base station 2 in the macro base station. Reserved frame length transmission.
  • the macro base station 3 is configured to receive the data frame adjustment information sent by the micro base station configuration center 1 to adjust the downlink frame length and the uplink frame length reserved on the data frame of the macro base station 3.
  • the data frame adjustment system between the micro base station and the macro base station reserves the resources on the data frame of the macro base station and the resources on the data frame of the micro base station by reserving the data frame of the macro base station in the time domain.
  • the transmissions are separated so that resource transmissions of the macro base station and the micro base station do not cause co-channel interference with each other.
  • the method for adjusting the data frame between the micro base station and the macro base station is not described here.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Description

微基站和宏基站间数据帧调整方法、 系统及微基站配置中心 本申请要求于 2009年 1月 23日提交中国专利局、 申请号为 200910077597. 9、发明 名称为 "微基站和宏基站间数据帧调整方法、 系统及微基站配置中心"的中国专利申请 的优先权, 以及 2009年 4月 10日提交中国专利局、 申请号为 200910127876. 1、发明名 称为 "微基站和宏基站间数据帧调整方法、 系统及微基站配置中心"的中国专利申请的 优先权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信技术领域, 特别涉及一种微基站和宏基站间数据帧调整方法、 系统 及微基站配置中心。 背景技术 全球微波接入互操作性 ( WiMAX )网络中的毫微微蜂窝基站接入点( Femtocel 1 Access Point, FAP) 是一种低功耗的 WiMAX基站。 这种基站提供小范围的无线覆盖, 主要应用 在室内家中和小型家庭办公(S0H0) 的环境, 因此又可以称为微基站。 它采用有线宽带 网络, 例如 DSL/IP网络等接入 WiMAX网络。 有线宽带网络可能和 WiMAX网络属于不同 的运营商。 终端通过空口连接 FAP, 再由 FAP通过有线宽带网络接入到 WiMAX网络, 与 WiMA 网络的核心网数据的信令面的交互都通过有线宽带网络来承载。 为了提髙室内用 户终端的体验, 增加带宽, 减少时延, 改善信号, FAP的应用势在必行。
但是由于运营商拥有的频率资源紧张, FAP与 WiMAX网络中的基站 (相对于 FAP, 在本发明实施例中称为宏基站) 的频率覆盖范围可能出现重叠, 而出现 FAP和宏基站共 用相同的频段资源的部署场景, 这样 FAP和宏基站之间就会存在同频干扰的问题, 从而 影响用户终端的通信质量。
现有技术中一般根据载波选择算法,通过计算宏基站和微基站 FAP可用载波的干扰, 给 FAP分配干扰低于干扰阈值的载波,再通过比较宏基站和 FAP的干扰情况设定最大上 下行发射功率, 达到减小 FAP和宏基站间干扰的目的。
但是通过载波选择算法,再经过功率控制的方法只能把宏基站对 FAP的干扰控制在 设定的干扰阈值内, 并不能消除干扰; 另外, 在载波选择算法中, 如果现有的载波都不 能满足减少 FAP和宏基站间干扰的条件, 就会报错, 此时就需要将干扰阈值提高, 但是 对于一些信道质量条件较差的情况, 提高干扰阈值后, 干扰就不能得到很好的控制。 再 有, 在 WiMAX网络中, 调制信号的载波是一系列打散的正交子载波, 一帧内可能包含多 种子载波分配方式区域 (如 PUSC、 FUSC、 AMC等), 它们之间的转换不确定并且很快, 因此很难判断哪些子载波被使用,所以现有技术中通过载波选择算法减小干扰并不适用 WiMA 网络。 发明内容
本发明实施例提供一种微基站和宏基站间数据帧调整方法、 系统及微基站配置中 心, 以消除微基站和宏基站间的同频干扰。
根据本发明实施例提供了一种微基站和宏基站间数据帧调整方法, 包括: 调整宏基站的数据帧, 在所述宏基站的数据帧中预留出预留帧长, 所述宏基站的 数据帧在所述预留帧长外进行资源传输;
配置在所述宏基站的覆盖范围内且与所述宏基站同频部署的微基站的数据帧, 使 微基站的数据帧在所述宏基站的预留帧长内进行资源传输。
根据本发明实施例还提供了一种微基站配置中心, 包括:
调整模块, 用于调整宏基站的数据帧, 在所述宏基站的数据帧中预留出预留帧长, 所述宏基站的数据帧在所述预留帧长外进行资源传输;
配置模块,用于配置在所述宏基站的覆盖范围内且与所述宏基站同频部署的微基站 的数据帧, 使微基站的数据帧在所述宏基站的预留帧长内进行资源传输。
根据本发明实施例还提供了一种微基站和宏基站间数据帧调整系统, 包括: 如上所 述的微基站配置中心、 微基站和宏基站,
所述微基站, 用于接收所述微基站配置中心发送的所述宏基站的数据帧信息、所述 所需下行帧长和所需上行帧长以及偏移时间信息, 以调整所述微基站的数据帧在所述宏 基站的预留帧长内传输;
所述宏基站, 用于接收所述微基站配置中心发送的数据帧调整信息, 以调整所述宏 基站的数据帧上预留的下行帧长和上行帧长。
由以上技术方案可知, 本发明实施例的微基站和宏基站间数据帧调整方法、 系统及 微基站配置中心, 根据获取到的信息配置微基站的数据帧的结构, 使得微基站的数据帧 上的资源可以在偏移宏基站的数据帧的一段时间后的宏基站的数据帧的预留帧长内进 行资源传输, 即通过在时域上将宏基站的数据帧进行预留, 将宏基站的数据帧上的资源 传输和微基站的数据帧上的资源传输分隔开,从而使得宏基站和微基站的资源传输不会 相互产生同频干扰。 附图说明 图 1为本发明 FAP接入系统的结构示意图;
图 2为本发明微基站和宏基站间数据帧调整方法第一实施例的流程示意图;
图 3为本发明微基站和宏基站间数据帧调整方法第二实施例的流程示意图;
图 4为本发明微基站和宏基站间数据帧的结构示意图;
图 5为本发明微基站和宏基站间数据帧调整方法第三实施例的流程示意图;
图 6为本发明微基站和宏基站间数据帧调整方法第四实施例的流程示意图;
图 7为本发明微基站和宏基站间数据帧的另一结构示意图;
图 8为本发明微基站和宏基站间数据帧调整方法第五实施例的流程示意图;
图 9为本发明微基站和宏基站间数据帧调整方法第六实施例的流程示意图;
图 10为本发明微基站配置中心第一实施例的结构示意图;
图 11为本发明微基站配置中心第二实施例的结构示意图;
图 12为本发明微基站配置中心第三实施例的结构示意图;
图 13为本发明微基站配置中心第四实施例的结构示意图;
图 14为本发明微基站和宏基站间数据帧调整系统实施例的结构示意图。 具体实施方式 下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行清楚、完整 地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是全部的实施例。 基 于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有 其他实施例, 都属于本发明保护的范围。
图 1为本发明 FAP接入系统的结构示意图。 WiMAX网络中的 FAP即微基站在经过授 权的频谱上为 WiMAX的移动终端提供接入服务, FAP本身通过有线宽带网络接入到 WiMAX 网络的核心网。 WiMAX网络中的 FAP和其他基站 (Base Station, BS) 一样, 由 WiMAX 网络中的网络接入提供商 (Network Access Provider, NAP) 管理, 其中其他 BS在本 发明实施例中统称为宏基站。 如图 1所示, 其中, 安全网关(Security Gateway, SeGW) 作为 FAP通过有线网络接入到 WiMAX网络的接入网关, 完成信号和数据包的转化。 FAP 认证授权计费 (AAA) 服务器, SeGW通过签约关系和 FAP MA服务器建立连接: FAP AAA 服务器完成对 FAP的入网认证授权和其他管理维护工作; FAP必须先通过 WiMAX网络中 的 FAP AAA服务器的认证和授权才能启动, 为移动终端提供服务; 另外, FAP AAA服务 器是一个逻辑实体, 根据场景不同, 可以位于不同的实体中, 如果 FAP和 NAP签约, 那 么 FAP AM服务器可以位于接入服务网 (Access Service Network, ASN) 中, 如果 FAP 和网络服务提供商 (Network Service Provider, NSP) 签约, 那么 FAP AAA服务器可 以位于连接服务网 (Connectivity Service Network, CSN) 中, 可以与 WiMAX网络中 的 AAA服务器共同部署在同一个物理实体上或者是部署在单独的物理实体上。 FAP配置 中心, FAP配置中心主要用于 FAP的参数配置, 包含一些运算和处理功能, 与 SeGW、 宏 基站和 FAP MA服务器相连, 从这些实体中获取信息, 并下发处理结果和配置消息, FAP 配置中心是一个逻辑实体, 一般可以位于 ASN中。
图 2为本发明微基站和宏基站间数据帧调整方法第一实施例的流程示意图。 如图 2 所示, 包括如下步骤:
步骤 201、 调整宏基站的数据帧, 在宏基站的数据帧中预留出预留帧长, 该宏基站 的数据帧在预留帧长外进行资源传输;
步骤 202、配置在宏基站的覆盖范围内且与宏基站同频部署的微基站的数据帧, 使 其在宏基站的预留帧长内进行资源传输。
其中, 在本发明实施例的以下表述中, 用 FAP表示微基站, BS表示宏基站。
本实施例具体地, BS为共同覆盖 FAP且与 FAP同频部署的至少一个 BS或所有的 BS; FAP为在 BS的覆盖范围内且与 BS同频部署的、共用 BS的预留帧长的至少一个 FAP或所 有 FAP。 FAP配置中心会根据其获取的信息对 BS的数据帧进行调整, 对与 FAP同频部署 的所有 BS的数据帧进行调整可以降低同频干扰。对 BS的数据帧进行的调整可以是仅在 第一个与 BS同频部署的 FAP进入 BS的覆盖范围内以及最后一个与 BS同频部署的 FAP 退出 BS的覆盖范围时, 对 BS的数据帧进行调整, 或者 BS的数据帧随着进入和退出该 BS覆盖范围的不同 FAP实时调整。 FAP配置中心还会根据其获取的信息配置在 BS的覆 盖范围内且与 BS同频部署的 FAP的数据帧, 使其在 BS的预留帧长内进行资源传输。
本实施例提供的微基站和宏基站间数据帧调整方法, 通过在时域上将 BS 的数据帧 进行预留, 将 BS的数据帧上的资源传输和 FAP的数据帧上的资源传输分隔开, 从而使 得 BS和 FAP的资源传输不会相互产生同频干扰。
图 3为本发明微基站和宏基站间数据帧调整方法第二实施例的流程示意图。 如图 3 所示, 包括如下步骤:
步骤 301、 获取 FAP的带宽信息以及 BS的数据帧信息;
步骤 302、 根据 FAP的带宽信息, 计算 FAP的数据帧的所需下行帧长和所需上行帧 长; 步骤 303、 调整 BS的数据帧, 在 BS的数据帧中预留出预留帧长, 该 BS的数据帧 在预留帧长外进行资源传输;
步骤 304、 发送 BS的数据帧信息、 FAP的数据帧的所需下行帧长和所需上行帧长以 及预设的偏移时间信息至 FAP , 以调整 FAP的数据帧在 BS的预留帧长内进行资源传输; 其中, 数据帧的结构一般包括下行子帧和上行子帧, 并在下行子帧和上行子帧之间 留有传输 /接收转换时隙 (Transmi t/receive Transit ion Gap, TTG ) , 在上行子帧和下 行子帧之间留有接收 /传输转换时隙 (Receive/transmit Trans i t ion Gap , RTG ) ; 数据 帧信息一般包括数据帧一帧的帧长、 上行子帧和下行子帧的比例信息、 TTG和 RTG的长 度。
本实施例具体地, FAP配置中心要获取 FAP的一些基本信息,例如 FAP的位置信息、
FAP的带宽信息等; 然后 FAP配置中心再根据 FAP的带宽信息, 计算 FAP的数据帧的所 需下行帧长和所需上行帧长; FAP配置中心将 BS的数据帧信息、微基站的数据帧的所需 下行帧长和所需上行帧长以及偏移时间信息发送至 FAP, FAP会根据其接收到的信息配 置其数据帧的结构,使得其数据信息可以在偏移 BS的数据帧的一段时间后的 BS数据帧 的预留帧长内进行传输, 即在时域上将 BS的数据和 FAP的数据分隔开进行传输, 从而 不会相互产生同频干扰。 下面再通过几个更加具体的实施例来对本发明进行详细说明。
图 4为本发明微基站和宏基站间数据帧的结构示意图。 如图 4所示, 在 BS的数据 帧上预留帧长, 即空出一些时隙资源, BS的数据帧在预留帧长内不进行资源传输, 在 该 BS覆盖下的所有同频部署的 FAP均可共用该 BS的预留帧长, 只在该 BS的预留帧长 内进行下行和上行的资源传输, 其余的时隙不进行资源传输。 当 FAP位于多个 BS共同 覆盖的范围内时, 覆盖 FAP且与 FAP工作频段相同的所有 BS都需要同时为 FAP预留出 时隙资源。 根据 FAP允许使用的最大带宽, 可以分别计算出 FAP的下行和上行传输所需 要的时隙资源,从而可以得到 BS需要预留的帧长 T1和 T2 ,分别为 FAP下行和上行资源 传输所需要的帧长。 BS通过资源调度, 在距离每一帧开始 A t l的位置空出 T1的帧长, 在距离每一帧开始 A t2的位置空出 T2的帧长, 预留出相应的帧长。 FAP同步其帧长与 BS的数据帧的帧长相同,按一定的比例划分下行和上行子帧的长度,该下行子帧的帧长 比 FAP实际需要的 FAP所需最大下行帧长, 即可以进行下行资源传输的时隙资源要大, 该上行子帧的帧长要比 FAP实际需要的 FAP所需最大上行帧长, 即可以进行上行资源传 输的时隙资源要大; FAP的数据帧的起始时间偏移 BS的数据帧的起始时间 A t l, 通过 资源调度, 从每一帧开始 Π的帧长用于下行资源传输, 在距离每一帧开始 Δ X2 - Δ t l 的位置开始使用 T2的帧长作为上行资源传输, 其余时隙不传输资源。 这样就实现了时 域上将 BS的数据帧和 FAP的数据帧上的信号分开来传输。 其中 A tl和 A t2的值为定 值,可以参考 FAP的数据帧所需要的 FAP所需最大下行帧长和 FAP所需最大上行帧长以 及 FAP下行子帧和上行子帧的帧长来设定。 利用图 4所示的数据帧结构进行资源传输, BS上的资源传输需要通过开启和关闭 BS的发射机和接收机设备来实现, 如图 4所示, BS上的发射机在 BS的下行数据帧开始时刻开启,经过 Δ tl时间后发射机关闭,在之后 的 T1时间内传输 FAP的下行数据帧, 在 A t l+ Tl时间后, BS的发射机再次开启, 直至 BS 的下行数据帧结束; 同理, BS上的接收机也要通过两次开启和关闭来实现上行数据 帧的接收。
图 5为本发明微基站和宏基站间数据帧调整方法第三实施例的流程示意图。 如图 5 所示, 当一个 FAP入网时, 该网络中存在覆盖该 FAP且与该 FAP同频部署的 BS时, 会 对该 FAP的数据帧的结构进行配置, 具体步骤如下:
步骤 401、 FAP发起入网认证请求, 并由 FAP AAA服务器进行认证授权; 当 FAP的 入网认证成功后, 由 FAP AAA服务器确定允许发放给该 FAP的最大带宽, 并发送 FAP入 网认证成功消息至 FAP和 /或 SeGW。
步骤 402、 SeGW在收到 FAP AAA服务器发送的 FAP入网认证成功消息后, 可以有如 下两种形式使得 FAP配置中心获取 FAP的带宽信息, 即: SeGW接收的该 FAP入网认证成 功消息中携带 FAP AAA服务器确定的 FAP的带宽信息即最大带宽; SeGW向 FAP配置中心 发起 FAP配置请求时,也会在该 FAP配置请求中携带该带宽信息,并且 SeGW还会将 FAP 在通过其接入到 FAP AAA服务器时获取的 FAP的位置信息携带在该 FAP配置请求中, 一 起上报给 FAP配置中心;或者, SeGW接收的该 FAP入网认证成功消息中不携带带宽信息; SeGW向 FAP配置中心发起 FAP配置请求, 该 FAP配置请求中也不携带该带宽信息; FAP 配置中心在收到该 FAP配置请求后,会向 FAP AAA服务器获取该带宽信息,并且在 FAP AAA 服务器与 FAP交互时, 也会获得 FAP的位置信息, 因此, 该 FAP配置中心也可以一并从 FAP MA服务器中获取该位置信息。
上述步骤 402是由 SeGW发起的 FAP配置请求,该步骤 402也可以由步骤 402'代替, 即步骤 402'、 FAP在收到 FAP AAA服务器发送的 FAP入网认证成功消息后, 向 FAP配置 中心发起 FAP配置请求; 其中也有如同步骤 402中的两种获取带宽信息和位置信息的形 式, 即 FAP配置请求中携带或者 FAP配置中心从 FAP AAA服务器中获取。
步骤 403、 FAP配置中心将 FAP的带宽信息存入一带宽列表中;
该 FAP配置中心主要对 FAP和 BS的一些信息进行获取并保存, 以便其计算一些配 置信息所使用。 步骤 404、 FAP配置中心根据其获取的 FAP的位置信息和接入网部署数据等信息査 询覆盖该 FAP的 BS的位置信息; 或者也可以通过 FAP触发终端设备解析 BS下发的数据 帧的下行子帧, 解析其中的 DL-MAP以获取该 FAP所在区域的 BS的标识 (BS ID ), 并在 FAP发起入网认证请求时携带获取的 BS ID, 以使 FAP配置中心在 SeGW或 FAP向其发起 FAP配置请求时, 可以从该 FAP配置请求中获取到该 BS ID。
步骤 405、 根据 BS的位置信息或 BS ID向 BS发起获取 BS的数据帧信息的请求, 并 获取该 BS的帧信息并保存。
在该步骤 405中, 如果 BS的相关数据帧信息是预先配置在 FAP配置中心上的, 或 者之前有其他的 FAP入网进行配置时, 也有 FAP被同样的 BS所覆盖, 那么该 FAP配置 中心就已经获取了该 BS 的数据帧信息; 在上述的情况下, FAP配置中心就不需要再向 BS发起请求来获取 BS的数据帧信息。 其中参考图 4中所示的 BS的数据帧结构, BS的 数据帧信息包括有帧长!^、 下行子帧 (DL) 和上行子帧 (UL) 的帧长比例、 以及 TTG和 RTG的长度等, 其中帧长 L包括一个下行子帧、 TTG、 一个上行子帧和 RTG的总长度。
步骤 406、 FAP配置中心预设第一偏移时间 Δ ΐΐ和第二偏移时间 A t2 ;
参考图 4, 该第二偏移时间 Δ t2与第一偏移时间 Δ t l的差值要大于 FAP所需最大 下行帧长 Tl„x BS的数据帧的 TTG之和, 即 Δ t2- Δ tl >Tlmx+TTG, 并且第二偏移时 间 Δ t2要小于 BS的帧长 L与 FAP所需最大上行帧长 T2皿的差值, 即 L一 Δ t2 >T2。 另外, 在确定 A t l和 Δ ΐ2值时优选地可以同时考虑使预留的两段帧长分别落在 BS的 DL和 UL中,且 BS在 UL中预留的帧长对应到 FAP的 UL上,从而使得资源得到平均利用, 并且对于最大可能的 Π和 Τ2值, 预留吋隙不会超出 DL或者 UL的边界。
步骤 407、 FAP配置中心根据 FAP的带宽信息即该 FAP的最大需求带宽分别计算所 需下行帧长 T1和所需上行帧长 Τ2, 以分别用于 FAP的下行和上行资源的传输, 并将该 T1和 Τ2值存入帧长列表中。
步骤 408、 FAP配置中心判断 BS覆盖范围内是否已有其他与该 BS同频部署的 FAP; 若不存在, 则执行步骤 409; 否则, 执行步骤 410;
步骤 409、 将第一偏移时间 A t l、 第二偏移时间 A t2以及所需下行帧长 Tl和所需 上行帧长 T2发送至 BS, 执行步骤 411 ;
步骤 410、说明该 FAP并非该 BS覆盖范围内的第一个入网的与该 BS同频部署的 FAP, 则之前在第一个入网的与该 BS同频部署的 FAP入网时, FAP配置中心已经将 和 Δ t2 发给了 BS; 此时, 仅需要比较 T1和 T2与保存在帧长列表中的对应的其他与该 BS同频 部署的 FAP的所需要的下行帧长和所需要的上行帧长, 此时比较后, 可能存在下面四种 情况, 对于不同的情况需要发给 BS的数据帧调整信息不同。
情况一、经比较后 Π大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需要 的下行帧长, T2也大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需要的上行 帧长, 则 FAP配置中心将 T1和 T2发给 BS, 执行步骤 411 ;
情况二、经比较后 T1大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需要 的下行帧长, T2不大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需要的上行 帧长, 则 FAP配置中心将 T1发给 BS, 执行步骤 411b ;
情况三、经比较后 T1不大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需 要的下行帧长, T2大于帧长列表中存储的其他与该 BS同频部署的 FAP的所需要的上行 帧长, 则 FAP配置中心将 T2发给 BS, 执行步骤 411c ;
情况四、 经比较后如果 T1和 T2都不是帧长列表中的最大值, 则 FAP配置中心不需 要将 T1和 T2发给 BS, 直接执行步骤 413。
步骤 411、 在 BS上, 对数据帧进行配置, 具体为: 通过资源调度, 在 BS的数据帧 开始后的 A tl后,预留与 T1相同的第一预留帧长,并在 BS的数据帧开始后的 Δ ΐ2后, 预留与 Τ2相同的第二预留帧长, 如图 4所示。
步骤 411b、 通过资源调度, 在 BS的数据帧开始后的 A tl后, 预留与 T1相同的第 一预留帧长, 第二预留帧长保持不变;
步骤 411c、通过资源调度,第一预留帧长保持不变,并在 BS的数据帧开始后的 A t2 后, 预留与 T2相同的第二预留帧长。
步骤 412、 BS完成数据帧的配置后, 向 FAP返回确认信息。
步骤 413、 FAP配置中心将 BS的数据帧信息和 Δ ΐ1、 Δ ΐ2, Tl、 Τ2发送到 FAP中。 步骤 414、 FAP根据 BS的数据帧信息进行其数据帧的配置, 同步 FAP的数据帧的帧 长与 BS 的数据帧的帧长相等, 设置合理的下行子帧和上行子帧的长度比; 其中, FAP 的数据帧中的 DL和 UL的比例的合理设置标准即为:保证 DL和 UL的长度分别大于最大 可能的 T1和 T2的值即可;
且通过资源调度, 从每一帧开始 T1 的帧长用于下行资源传输, 在距离每一帧开始 A t2— A tl的位置开始使用 T2的帧长作为上行资源传输, 其余时隙不传输资源。 并在 时间上该 FAP的数据帧的起始时间偏移 BS的数据帧的起始时间 Δ tl时间,如图 4所示。
步骤 415、 FAP完成数据帧的配置后, 向 FAP配置中心返回确认信息。
另外, 在步骤 414之前的任一时刻, 还要进行 FAP的数据帧和时钟同步服务器进行 时钟同步。 至此, FAP和 BS完成了入网时的动态的数据帧的调整过程, 在尽可能地节省 BS的 带宽资源的情况下可以很好的消除 FAP和 BS之间的同频干扰。
图 6为本发明微基站和宏基站间数据帧调整方法第四实施例的流程示意图。 当 FAP 退网成功后, 退网的 FAP会释放其占用的带宽, 此时覆盖该 FAP的且与该 FAP同频部署 的 BS可以随之调整其预留的带宽资源, 如图 6所示, 包括如下步骤:
步骤 501、 SeGW向 FAP配置中心上报退网的 FAP所释放的带宽, 或者由 FAP AAA服 务器向 FAP配置中心下发这一信息。
步骤 502、 FAP配置中心判断覆盖 FAP的 BS所在区域是否还存在其他与该 BS同频 部署的 FAP , 若存在, 执行步骤 503 ; 否则, 执行步骤 506。
步骤 503、 根据 FAP的位置信息, 将 T1和 T2与保存在列表中的对应的其他与该 BS 同频部署的 FAP的所需要的下行帧长和所需要的上行帧长相比较,若 T1和 T2均大于其 他与该 BS同频部署的 FAP的数据帧的所需要的下行帧长和所需要的上行帧长, 则重新 选择列表中的所需要的下行帧长和所需要的上行帧长中的最大值,并将其发送至 BS ,执 行步骤 504a;或者若 T1大于其他与该 BS同频部署的 FAP的数据帧的所需要的下行帧长, 则重新选择列表中的所需要的下行帧长中的最大值, 并将其发送至 BS , 执行步骤 504b ; 或者若 T2大于其他与该 BS同频部署的 FAP的数据帧的所需要的上行帧长,则重新选择 列表中的所需要的上行帧长中的最大值, 并将其发送至 BS, 执行步骤 504c。
步骤 504a、BS根据接收到的 T1和 T2,调整其数据帧上预留的下行帧长和上行帧长; 步骤 504b、 BS根据接收到的 Tl, 调整其数据帧上预留的下行帧长;
步骤 504c、 BS根据接收到的 Τ2 , 调整其数据帧上预留的上行帧长。
步骤 505、 BS完成数据帧的配置后, 向 FAP配置中心发送确认消息, 结束。
步骤 506、 FAP配置中心触发 BS取消其数据帧上预留的下行帧长和上行帧长。 至此, BS完成了 FAP退网时的动态的数据帧调整的过程, 在尽可能地节省 BS的带 宽资源的情况下可以很好的消除 FAP和 BS之间的同频干扰。
在上述实施例中, 相对于 FAP入网, 若在步骤 406中, FAP配置中心上还可以预设
BS的第一预留帧长为 FAP所需最大下行帧长; 或者预设 BS的第二预留帧长为 FAP所需 最大上行帧长; 或者预设 BS的第一预留帧长为 FAP所需最大下行帧长, 且 BS的第二预 留帧长为 FAP所需最大上行帧长, 则上述步骤 408~411可以由下述步骤来替代:
步骤 408'、FAP配置中心判断 BS覆盖范围内是否已有其他与该 BS同频部署的 FAP; 若不存在, 则执行步骤 409' ; 否则, 执行步骤 410' ;
步骤 409'、若步骤 406中仅增加预设了第一预留帧长或第二预留帧长,则将第一偏 移时间 Atl、 第二偏移时间 At2, 以及第一预留帧长和 T2或第二预留帧长和 T1发送 至 BS, 并执行步骤 411' ; 若步骤 406中增加预设了第一预留帧长和第二预留帧长, 则 将第一偏移时间 Δΐ1、 第二偏移时间 At2, 以及第一预留帧长和第二预留帧长发送至 BS, 并执行步骤 41 ;
其中第一预留帧长为预设的 FAP所需最大下行帧长,第二预留帧长为预设的 FAP所 需最大上行帧长, 因此, 一旦在 BS上设置好后, 只要 BS覆盖范围内还存在与该 BS同 频部署的 FAP, 该预留帧长就不需要再调整, 即步骤 410'可以不执行。 当然也可以根据 需要仅设置第一预留帧长和第二预留帧长之一,此时, BS的上行子帧的预留帧长可能还 需要根据 T2进行调整, 或是 BS的下行子帧的预留帧长可能还需要根据 T1进行调整, 即需要执行步骤 410'。
步骤 410'、 说明该 FAP并非该 BS覆盖范围内的第一个入网的与该 BS同频部署的 FAP, 则,
若步骤 406中预设了第一预留帧长, 之前在第一个入网的与该 BS同频部署的 FAP 入网时, FAP配置中心已经将 Atl、 At2和第一预留帧长发给了 BS, 此时, 需要比较 T2与保存在帧长列表中的对应的其他与该 BS同频部署的 FAP的所需要的上行帧长, 若 T2比其他与该 BS同频部署的 FAP的所需要的上行帧长大, 则将 T2发送至 BS;
若步骤 406中预设了第二预留帧长, 之前在第一个 FAP入网时, FAP配置中心已经 将 Atl、 At2和第二预留帧长发给了 BS, 此时, 需要比较 Π与保存在帧长列表中的对 应的其他与该 BS同频部署的 FAP的所需要的下行帧长, 若 T1比其他与该 BS同频部署 的 FAP的所需要的下行帧长大, 则将 T1发送至 BS。
步骤 411'、 在 BS上, 根据其接收到的数据帧调整信息对数据帧进行配置; 具体地, 数据帧调整信息可能包括 Atl、 At2,第一预留帧长和第二预留帧长, 或 者包括 Atl、 Δΐ2、 第一预留帧长和 Τ2, 或者包括 Atl、 At2、 T1和第二预留帧长。
步骤 412'、 BS完成数据帧的配置后, 向 FAP返回确认信息。
因此, 当 FAP退网时, 如果预设了第一预留帧长和第二预留帧长, 则到最后一个与 该 BS同频部署的 FAP退网后, BS才会释放其数据帧上预留的帧长, 而不会随着 Tl、 Τ2 的变化随时调整,虽然较实时调整可能占用稍微多一些的 BS带宽资源,但是在消除 FAP 和 BS之间的同频干扰的同时, 还可以大大减少调整时信令传输的时间。
图 7为本发明微基站和宏基站间数据帧的另一结构示意图。如图 7所示,在紧挨 TTG 的两边分别预留出 T1和 Τ2的帧长。由于所有 FAP的 DL和 UL长度比需要一样,所以 FAP 的 DL必须不小于最大可能的 FAP所需要的下行帧长; 为了 FAP之间的同步, DL的帧长 也要固定。同时根据各个 FAP所需带宽计算所需下行帧长 T1和所需下行帧长 T2要占用 的 DL帧长和 UL帧长, 其中 T2可以根据各个 FAP所需要的上行帧长进行调节, 可以挤 压 BS的上行资源扩大 T2。 对于在 BS上预留固定的最大时隙的场景, Τ2也可以根据最 大下行帧长和 FAP所需求的最大带宽设为 FAP所需最大上行帧长。 FAP的数据帧的 DL 子帧长已确定, 从而 UL子帧长确定, 起始时间偏移 BS的数据帧第三偏移是时间 A t, A t 的值需要预先确定, 且应保证 A t=BS 的下行子帧帧长 -FAP所需最大下行帧长 Tl,。 通过资源调度, FAP的数据帧在 DL上根据所分配的时隙使用下行资源, 在 UL上 根据所分配的时隙使用上行资源, 其余时隙不能使用。 与图 4所示的数据帧结构的调整 相比, 图 7调整后的数据帧结构使得 BS在一帧内接收机和发射机只需要开启和关闭一 次, 与图 4所示的数据帧结构的调整相比各减少了一次, 从而减少了对 BS的软硬件的 需求。
图 8为本发明微基站和宏基站间数据帧调整方法第五实施例的流程示意图。以在 BS 的数据帧的 TTG两侧预留帧长的场景为例, 如图 7所示, 首先 TTG之前即 BS的下行子 帧上要预留固定的第一预留帧长, 该第一预留帧长等于 FAP所需最大下行帧长, 而 TTG 之后的 BS下行子帧上预留的帧长可以固定也可以随 Τ2实时调整,本实施例以 TTG之后 的 BS下行子帧上预留的帧长也为固定的第二预留帧长为例, 该第二预留帧长等于 FAP 所需最大上行帧长。 由于 BS上预留的帧长不作改变, 因此只需要在该 BS覆盖范围内且 与该 BS同频部署的第一个 FAP入网时启动在数据帧上的预留, 以及在该 BS覆盖范围内 且与该 BS同频部署的最后一个 FAP退网时释放预留的时隙资源即可, 中间 FAP入网和 退网的过程中 BS不需要进行调整, 只需要给 FAP下发对应的数据帧的配置参数。 并且, 本实施例中的 BS的数据帧的信息均存储于 FAP配置中心中, 不需要再向 BS获取。如图 8所示, 包括如下步骤:
步骤 701、 FAP发起入网认证请求, 并由 FAP AAA服务器进行认证授权; 当 FAP的 入网认证成功后, 由 FAP AAA服务器确定允许发放给该 FAP的最大带宽, 并发送 FAP入 网认证成功消息至 FAP和 /或 SeGW。
步骤 702、 SeGW和 /或 FAP通过 FAP配置请求将所述带宽信息和 FAP的位置信息, 并由 SeGW或 FAP告知 FAP配置中心, 或 FAP配置中心可以从 FAP AAA服务器直接获取; 或者。 同上述实施例中的步骤 402或步骤 402'。
步骤 703、 FAP配置中心根据其获取的 FAP的位置信息和接入网部署数据等信息直 接在其上査询覆盖该 FAP的 BS的数据帧信息;
步骤 704、 预设第三偏移时间 A t, 第三偏移时间 A t要保证 A t= - Tlra; 并预 设 BS的第一预留帧长为 FAP所需最大下行帧长 T1 预设 BS的第二预留帧长为 FAP所 需最大上行帧长 T2
需要说明的是, 该步骤 704预设的参数 A t、 第一预留帧长和第二预留帧长只需要 之前在 FAP配置中心上设定好即可, 时序关系不作限定。
步骤 705 FAP配置中心根据 FAP的带宽信息即该 FAP的最大需求带宽分别计算入 网的 FAP所需下行帧长 T1和所需上行帧长 T2
步骤 706 FAP配置中心确定覆盖该 FAP的 BS上是否已经预留带宽资源, 即该 FAP 是否为该 BS覆盖范围内且与该 BS同频部署的的第一个入网的 FAP, 若是, 则执行步骤 707; 否则执行步骤 710
步骤 707、将第三偏移时间 Δ t、最大下行帧长 T1皿和最大上行帧长 T2 发送至 BS 步骤 708、 在 BS上, 对数据帧进行配置, 具体为: 通过资源调度, 在偏移 BS的数 据帧的起始位置第三偏移时间 A t后和 BS的数据帧的 TTG开始前, 预留第一预留帧长 Tl,, 并在紧跟 BS的数据帧的 TTG结束后预留第二预留帧长 Τ2ΚΙ) 如图 7所示。
步骤 709 BS完成数据帧的配置后, 向 FAP返回确认信息。
步骤 710 FAP配置中心将 BS的数据帧信息、 第三偏移时间 Δ t、 所需下行帧长 T1 和所需上行帧长 T2发送到 FAP中。
步骤 711 FAP根据 BS的数据帧信息进行其数据帧的配置, 同步 FAP的数据帧的帧 长与 BS的数据帧的帧长相等, 设置合理的下行子帧和上行子帧的长度比;
且通过资源调度, FAP的数据帧在偏移 BS的数据帧开始后的 A t后, 在 T1内携带 数据传输, 并在紧跟 BS的数据帧的 TTG结束后的 T2内携带数据传输。
需要说明的是, 如图 7所示, 其中 T1从 T1,的起始处开始, 并不一定会占用整个 Tlm¾; 同理 T2从 2皿的起始处开始, 并不一定会占用整个 T2mx
步骤 712 FAP完成数据帧的配置后, 向 FAP配置中心返回确认信息。
另外, 在步骤 711之前的任一时刻, 还要进行 FAP的数据帧和时钟同步服务器进行 时钟同步。 这样就可以实现在时域上将 BS和 FAP中的数据信号的传输分开, 消除了两 者之间的同频干扰。
图 9为本发明微基站和宏基站间数据帧调整方法第六实施例的流程示意图。 当 FAP 退网成功后, 退网的 FAP会释放其占用的带宽, 在在 BS上预留固定的最大时隙的场景 下, 如图 9所示, 包括如下步骤:
步骤 801 SeGW向 FAP配置中心上报退网的 FAP所释放的带宽, 或者由 FAP AAA服 务器向 FAP配置中心下发这一信息。 步骤 802、 FAP配置中心查询该 BS覆盖范围下是否所有的与该 BS同频部署的 FAP 都退网, 如果是, 则执行步骤 803; 如果不是, 则结束。
步骤 803、 FAP配置中心通知 BS释放其上预留的带宽资源。
步骤 804、 BS通过资源调度, 取消预留帧长, 允许 BS上的数据帧使用全部的时隙。 步骤 805、 BS的数据帧配置完成后, 向 FAP配置中心返回确认消息。
至此, BS完成了 FAP退网时的动态的数据帧调整的过程, 在 BS上预留固定的最大 时隙的场景下, 虽然牺牲了一些 BS上的带宽信息, 但是可以省却 FAP配置中心的一些 复杂的处理过程。
对于 FAP位于多个 BS共同覆盖区域的场景, FAP在覆盖它的所有 BS的工作频段中 选择一个工作频段进行同频部署, 每个覆盖该 FAP的且与该 FAP工作频段相同的 BS都 需要同时为该 FAP预留时隙资源, 即对每个与该 FAP工作频段相同的 BS都要实行 FAP 位于单个 BS覆盖区域场景的同样处理, 步骤基本相同, 在此不再赘述。
图 10为本发明微基站配置中心第一实施例的结构示意图。如图 10所示, 该微基站 配置中心包括:调整模块 91和配置模块 92。其中调整模块 91用于调整宏基站的数据帧, 在宏基站的数据帧中预留出预留帧长, 宏基站的数据帧在预留帧长外进行资源传输; 配 置模块 92用于配置在宏基站的覆盖范围内且与宏基站同频部署的微基站的数据帧, 使 其在宏基站的预留帧长内进行资源传输。
本实施例提供的微基站配置中心, 通过在时域上将宏基站的数据帧进行预留, 将宏 基站的数据帧上的资源传输和微基站的数据帧上的资源传输分隔开,从而使得宏基站和 微基站的资源传输不会相互产生同频干扰。本实施例提供的微基站配置中心进行数据帧 调整的具体方法详见上述微基站和宏基站间数据帧调整方法实施例, 在此不再赘述。
图 11为本发明微基站配置中心第二实施例的结构示意图。如图 11所示, 该微基站 配置中心除了包括上述实施例的调整模块 91和配置模块 92外, 还包括: 第一获取模块 93、 第二获取模块 94和计算模块 95。 其中, 第一获取模块 93, 用于获取微基站的带宽 信息; 第二获取模块 94, 用于获取覆盖微基站的宏基站的数据帧信息; 计算模块 95, 用于根据第一获取模块 93获取的微基站的带宽信息, 计算微基站的数据帧的所需下行 帧长和所需上行帧长; 此时配置模块 92具体可以包括: 发送子模块 921, 用于发送预设 的偏移时间信息、第二获取模块 94获取的宏基站的数据帧信息以及计算模块 95计算得 到的微基站的数据帧的所需下行帧长和所需上行帧长至微基站, 以及配置子模块 922, 用于根据发送子模块 921发送的信息配置微基站的数据帧, 以调整微基站的数据帧在宏 基站的预留帧长内传输。 其中数据帧包括下行子帧和上行子帧, 并在下行子帧和上行子帧之间留有传输 /接 收转换时隙(TTG)和在上行子帧和下行子帧之间留有接收 /传输转换时隙(RTG); 数据 帧信息包括帧长、 上行子帧和下行子帧的比例、 TTG和 RTG; 偏移时间信息用于设定微 基站下行传输的数据帧和上行传输的数据帧的起始时间。
本实施例提供的微基站配置中心, 通过在时域上将宏基站的数据帧进行预留, 将宏 基站的数据帧上的资源传输和微基站的数据帧上的资源传输分隔开,从而使得宏基站和 微基站的资源传输不会相互产生同频干扰。本实施例提供的微基站配置中心进行数据帧 调整的具体方法详见上述微基站和宏基站间数据帧调整方法实施例, 在此不再赘述。
图 12为本发明微基站配置中心第三实施例的结构示意图。如图 12所示, 该微基站 配置中心除了包括上述实施例中的调整模块 91、 配置模块 92、 第一获取模块 93、 第二 获取模块 94和计算模块 95外, 还可以包括:
第一预设模块 96,用于预设偏移时间信息,该偏移时间信息包括第一偏移时间和第 二偏移时间、 或者第三偏移时间; 其中第二偏移时间与第一偏移时间的差值要大于微基 站所需最大下行帧长和 BS的数据帧的 TTG之和, 且第二偏移时间要小于帧长与微基站 所需最大上行帧长的差值,第三偏移时间要小于宏基站的下行子帧帧长与微基站所需最 大下行帧长的差值。
第二预设模块 97,用于预设宏基站的第一预留帧长为微基站所需最大下行帧长,和 /或预设宏基站的第二预留帧长为微基站所需最大上行帧长。
其中调整模块 91中具体可以包括:第一判断子模块 911,用于判断宏基站覆盖范围 内是否已存在其他与该宏基站同频部署的微基站; 第一处理子模块 912, 用于在第一判 断子模块 911判断不存在其他与该宏基站同频部署的微基站时, 将第一偏移时间、第二 偏移时间以及所需下行帧长和所需上行帧长发送至宏基站,宏基站在偏移其数据帧的起 始位置第一偏移时间后, 预留与所需下行帧长相同的第一预留帧长, 并在偏移其数据帧 的起始位置第二偏移时间后, 预留与所需上行帧长相同的第二预留帧长; 或者将第三偏 移时间以及所述第一预留帧长和所需上行帧长发送至宏基站,宏基站在偏移其数据帧的 起始位置第三偏移时间后和在其数据帧的 TTG开始前, 预留第一预留帧长, 并在紧跟其 数据帧的 TTG 结束后预留与所需上行帧长相同的第二预留帧长; 第一比较处理子模块 913, 用于在第一判断子模块 911判断存在其他同频部署微基站时, 比较所需下行帧长 和所需上行帧长与对应的其他与该宏基站同频部署的微基站的数据帧的所需要的下行 帧长和所需要的上行帧长;若所需下行帧长和所需上行帧长分别大于其他与该宏基站同 频部署的微基站的数据帧的所需要的下行帧长和所需要的上行帧长, 则将所需下行帧长 和所需上行帧长发送至宏基站, 宏基站在偏移其数据帧的起始位置第一偏移时间后, 预 留与所需下行帧长相同的第一预留帧长, 并在偏移其数据帧的起始位置第二偏移时间 后, 预留与所需上行帧长相同的第二预留帧长; 或者若所需下行帧长大于其他与该宏基 站同频部署的微基站的数据帧的所需要的下行帧长, 则将所需下行帧长发送至宏基站, 宏基站在偏移其数据帧的起始位置第一偏移时间后,预留与所需下行帧长相同的第一预 留帧长;或者若所需上行帧长大于其他与该宏基站同频部署的微基站的数据帧的所需要 的上行帧长, 则将所需上行帧长发送至宏基站, 宏基站在偏移其数据帧的起始位置第二 偏移时间后, 预留与所需上行帧长相同的第二预留帧长; 或者比较所需上行帧长与对应 的其他与该宏基站同频部署的微基站的所需要的上行帧长,若所需上行帧长大于其他与 该宏基站同频部署的微基站的数据帧的所需要的上行帧长, 则将所需上行帧长发送至宏 基站, 宏基站在偏移其数据帧的起始位置第三偏移时间后和在其数据帧的 TTG开始前, 预留第一预留帧长, 并在紧跟其数据帧的 TTG结束后预留与所需上行帧长相同的第二预 留帧长。
本实施例提供的微基站配置中心, 通过在时域上将宏基站的数据帧进行预留, 将宏 基站的数据帧上的资源传输和微基站的数据帧上的资源传输分隔开,从而使得宏基站和 微基站的资源传输不会相互产生同频干扰。本实施例提供的微基站配置中心进行数据帧 调整的具体方法详见上述微基站和宏基站间数据帧调整方法实施例, 在此不再赘述。
图 13为本发明微基站配置中心第四实施例的结构示意图。如图 13所示, 该微基站 配置中心除了包括上述实施例中的调整模块 91、 配置模块 92、 第一获取模块 93、 第二 获取模块 94、 计算模块 95、 第一预设模块 96和第二预设模块 97外, 其中调整模块 91 中还可以具体包括:
第二处理子模块 914, 用于当预设宏基站的第一预留帧长为微基站所需最大下行帧 长时, 将预设的第一偏移时间和第二偏移时间、 微基站所需最大下行帧长以及所需上行 帧长发送至宏基站, 宏基站在偏移其数据帧的起始位置第一偏移时间后, 预留第一预留 帧长, 并在偏移其数据帧的起始位置第二偏移时间后, 根据所需上行帧长预留第二预留 帧长; 或者当预设宏基站的第二预留帧长为微基站所需最大上行帧长时, 将预设的第一 偏移时间和第二偏移时间、 所需下行帧长以及微基站所需最大上行帧长发送至宏基站, 宏基站在偏移其数据帧的起始位置第一偏移时间后,根据所需下行帧长预留第一预留帧 长, 并在偏移其数据帧的起始位置第二偏移时间后, 预留第二预留帧长; 或者当宏基站 的第一预留帧长为微基站所需最大下行帧长,且宏基站的第二预留帧长为微基站所需最 大上行帧长时,将预设的第一偏移时间和第二偏移时间以及微基站所需最大下行帧长和 微基站所需最大上行帧长发送至宏基站,宏基站在偏移其数据帧的起始位置第一偏移时 间后, 预留第一预留帧长, 并在偏移其数据帧的起始位置第二偏移时间后, 预留第二预 留帧长; 或者当预设宏基站的第一预留帧长为微基站所需最大下行帧长, 且宏基站的第 二预留帧长为微基站所需最大上行帧长时,将预设的第三偏移时间以及微基站所需最大 下行帧长和微基站所需最大上行帧长发送至宏基站,宏基站在偏移其数据帧的起始位置 第三偏移时间后和在其数据帧的 TTG开始前, 预留第一预留帧长, 并在紧跟其数据帧的 TTG结束后预留第二预留帧长。
另外, 当微基站退网时, 在上述的微基站配置中心中还要包括与退网时进行数据帧 调整有关的模块, 以本实施例中图 13所示的微基站配置中心为例, 当宏基站的数据帧 上预留的帧长需要根据微基站所需帧长改变时还可以包括:
第三获取模块 971, 用于当微基站退网成功后, 获取微基站所释放的带宽信息以及 所需下行帧长和所需上行帧长; 第二判断模块 972 , 用于判断宏基站覆盖范围内是否已 存在多个与该宏基站同频部署的微基站; 第二比较处理模块 973, 用于在第二判断模块 972判断存在其他与该宏基站同频部署的微基站时, 根据微基站的位置信息以及第三获 取模块 971获取的信息,将所需下行帧长和所需上行帧长与保存在列表中的对应的其他 与该宏基站同频部署的微基站的所需要的下行帧长和所需要的上行帧长相比较,若所需 下行帧长和所需上行帧长大于其他微基站的数据帧的下行帧长和上行帧长,则重新选择 列表中的所需要的下行帧长和所需要的上行帧长中的最大值, 并将其发送至宏基站以调 整在宏基站的数据帧上预留的下行帧长和上行帧长,或者若所需下行帧长大于其他与该 宏基站同频部署的微基站的数据帧的所需要的下行帧长,则重新选择列表中的所需要的 下行帧长中的最大值, 并将其发送至宏基站以调整在宏基站的数据帧上预留的下行帧 长,或者若所需上行帧长大于其他与该宏基站同频部署的微基站的数据帧的所需要的上 行帧长, 则重新选择列表中的所需要的上行帧长中的最大值, 并将其发送至宏基站以调 整在宏基站的数据帧上预留的上行帧长; 第三处理模块 974, 用于在第二判断模块 972 判断不存在其他与该宏基站同频部署的微基站时,取消在宏基站的数据帧上预留的下行 帧长和上行帧长。
或者当宏基站的数据帧上预留的帧长是固定的,不会随微基站所需帧长改变时还可 以包括:
第三判断模块 981, 用于判断宏基站覆盖范围内是否已存在多个与该宏基站同频部 署的微基站; 第四处理模块 982 , 用于在第三判断模块 981判断存在其他与该宏基站同 频部署的微基站时, 保持在宏基站的数据帧上预留的下行帧长和上行帧长; 在第三判断 模块 981判断不存在其他与该宏基站同频部署的微基站时,取消在宏基站的数据帧上预 留的下行帧长和上行帧长。
本实施例提供的微基站配置中心, 通过在时域上将宏基站的数据帧进行预留, 将宏 基站的数据帧上的资源传输和微基站的数据帧上的资源传输分隔开,从而使得宏基站和 微基站的资源传输不会相互产生同频干扰。本实施例提供的微基站配置中心进行数据帧 调整的具体方法详见上述微基站和宏基站间数据帧调整方法实施例, 在此不再赘述。
图 14为本发明微基站和宏基站间数据帧调整系统实施例的结构示意图。如图 14所 示, 该系统包括: 如上述实施例所描述的微基站配置中心 1、 微基站 2和宏基站 3。 其 中,微基站配置中心 1如图 10、图 11、图 12或图 13所描述, 在此不再赘述。微基站 2, 用于接收微基站配置中心 1发送的宏基站的数据帧信息、所需下行帧长和所需上行帧长 以及偏移时间信息, 以调整微基站 2的数据帧在宏基站的预留帧长内传输。 宏基站 3, 用于接收微基站配置中心 1发送的数据帧调整信息, 以调整宏基站 3的数据帧上预留的 下行帧长和上行帧长。
本实施例提供的微基站和宏基站间数据帧调整系统,通过在时域上将宏基站的数据 帧进行预留, 将宏基站的数据帧上的资源传输和微基站的数据帧上的资源传输分隔开, 从而使得宏基站和微基站的资源传输不会相互产生同频干扰。本实施例提供的微基站和 宏基站间数据帧调整系统进行数据帧调整的具体方法详见上述微基站和宏基站间数据 帧调整方法实施例, 在此不再赘述。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程, 是可以通 过计算机程序来指令相关的硬件来完成,所述的程序可存储于一计算机可获取存储介质 中, 该程序在执行时, 可包括如上述各方法的实施例的流程。 其中, 所述的存储介质可 为磁碟、 光盘、 只读存储记忆体(Read-Only Memory, ROM)或随机存储记忆体 (Random Access Memory, RAM) 等。 最后应说明的是: 以上实施例仅用以说明本发明的技术方案, 而非对其限制; 尽管 参照前述实施例对本发明进行了详细的说明, 本领域的普通技术人员应当理解: 其依然 可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替 换; 而这些修改或者替换, 并不使相应技术方案的本质脱离本发明各实施例技术方案的 精神和范围。

Claims

权利要求
1、 一种微基站和宏基站间数据帧调整方法, 其特征在于, 包括:
调整宏基站的数据帧, 在所述宏基站的数据帧中预留出预留帧长, 所述宏基站的 数据帧在所述预留帧长外进行资源传输;
配置在所述宏基站的覆盖范围内且与所述宏基站同频部署的微基站的数据帧, 使 所述微基站的数据帧在所述宏基站的预留帧长内进行资源传输。
2、 根据权利要求 1所述方法, 其特征在于, 所述宏基站为共同覆盖所述微基站 且与所述微基站同频部署的所有宏基站。
3、 根据权利要求 1所述方法, 其特征在于, 所述微基站为在所述宏基站的覆盖 范围内且与所述宏基站同频部署的、 共用所述宏基站的预留帧长的所有微基站。
4、 根据权利要求 1、 2或 3所述方法, 其特征在于,
在所述调整宏基站的数据帧, 在所述宏基站的数据帧中预留出预留帧长, 所述宏基 站的数据帧在所述预留帧长外进行资源传输之前还包括:
获取微基站的带宽信息以及所述宏基站的数据帧信息;
根据所述微基站的带宽信息,计算所述微基站的数据帧的所需下行帧长和所需上行 帧长;
所述配置在所述宏基站的覆盖范围内且与所述宏基站同频部署的微基站的数据帧, 使所述微基站的数据帧在所述宏基站的预留帧长内进行资源传输具体包括:
发送所述宏基站的数据帧信息、所述微基站的数据帧的所需下行帧长和所需上行帧 长以及预设的偏移时间信息至所述微基站, 以调整所述微基站的数据帧在所述宏基站的 预留帧长内进行资源传输;所述偏移时间信息用于设定所述微基站下行传输的数据帧和 上行传输的数据帧的起始时间。
5、 根据权利要求 4所述方法, 其特征在于, 还包括:
预设所述偏移时间信息, 所述偏移时间信息包括第一偏移时间和第二偏移时间; 其 中所述第二偏移时间与第一偏移时间的差值大于所述微基站所需最大下行帧长和所述 宏基站的数据帧的传输 /接收转换时隙 TTG之和, 且所述第二偏移时间小于所述宏基站 的帧长与微基站所需最大上行帧长的差值。
6、 根据权利要求 5所述方法, 其特征在于, 所述调整宏基站的数据帧, 在所述 宏基站的数据帧中预留出预留帧长包括:
判断所述宏基站覆盖范围内是否已存在其他与所述宏基站同频部署的微基站; 若不存在, 则将所述第一偏移时间、第二偏移时间以及所述所需下行帧长和所需上 行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间 后, 预留与所述所需下行帧长相同的第一预留帧长, 并在偏移宏基站的数据帧的起始位 置第二偏移时间后, 预留与所述所需上行帧长相同的第二预留帧长;
若存在,则比较所述所需下行帧长和所需上行帧长与对应的其他与所述宏基站同频 部署的微基站的数据帧的下行帧长和上行帧长; 若所述所需下行帧长和所需上行帧长分 别大于其他与所述宏基站同频部署的微基站的数据帧的下行帧长和上行帧长, 则将所述 所需下行帧长和所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的 起始位置第一偏移时间后, 预留与所述所需下行帧长相同的第一预留帧长, 并在偏移宏 基站的数据帧的起始位置第二偏移时间后,预留与所述所需上行帧长相同的第二预留帧 长;或者若所述所需下行帧长大于其他与所述宏基站同频部署的微基站的数据帧的下行 帧长, 则将所述所需下行帧长发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的 起始位置第一偏移时间后, 预留与所述所需下行帧长相同的第一预留帧长; 或者若所述 所需上行帧长大于其他与所述宏基站同频部署的微基站的数据帧的上行帧长, 则将所述 所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的起始位置第二偏 移时间后, 预留与所述所需上行帧长相同的第二预留帧长。
7、 根据权利要求 5所述方法, 其特征在于, 还包括:
预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长;或者预设所述宏 基站的第二预留帧长为所述微基站所需最大上行帧长;或者预设所述宏基站的第一预留 帧长为所述微基站所需最大下行帧长,且所述宏基站的第二预留帧长为所述微基站所需 最大上行帧长。
8、 根据权利要求 7所述方法, 其特征在于, 所述调整宏基站的数据帧, 在所述 宏基站的数据帧中预留出预留帧长还包括:
当预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长时,将所述预设 的第一偏移时间和第二偏移时间、所述微基站所需最大下行帧长以及所述所需上行帧长 发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间后, 预 留所述第一预留帧长, 并在偏移宏基站的数据帧的起始位置第二偏移时间后, 根据所述 所需上行帧长预留第二预留帧长; 或者
当预设所述宏基站的第二预留帧长为所述微基站所需最大上行帧长时,将所述预设 的第一偏移时间和第二偏移时间、所述所需下行帧长以及所述微基站所需最大上行帧长 发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间后, 根 据所述所需下行帧长预留第一预留帧长,并在偏移宏基站的数据帧的起始位置第二偏移 时间后, 预留所述第二预留帧长; 或者
当所述宏基站的第一预留帧长为所述微基站所需最大下行帧长,且所述宏基站的第 二预留帧长为所述微基站所需最大上行帧长时,将所述预设的第一偏移时间和第二偏移 时间以及所述微基站所需最大下行帧长和所述微基站所需最大上行帧长发送至所述宏 基站, 所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间后, 预留所述第一预 留帧长,并在偏移宏基站的数据帧的起始位置第二偏移时间后,预留所述第二预留帧长。
9、 根据权利要求 5、 6、 7或 8所述方法, 其特征在于, 所述调整所述微基站的 数据帧在所述宏基站的预留帧长内进行资源传输具体包括:
根据所述宏基站的数据帧信息,所述微基站将微基站的数据帧的帧长同步为所述宏 基站的数据帧的帧长;
所述微基站调整微基站的数据帧在偏移所述宏基站的数据帧的起始位置第一偏移 时间后, 在所述所需下行帧长内进行资源传输, 并在偏移所述微基站的数据帧的起始位 置第二偏移时间与第一偏移时间的差值时间后, 在所述所需上行帧长内进行资源传输。
10、 根据权利要求 4所述方法, 其特征在于, 还包括- 预设所述偏移时间信息, 所述偏移时间信息为第三偏移时间, 所述第三偏移时间等 于所述宏基站的下行子帧帧长与微基站所需最大下行帧长的差值; 以及
预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长;或者预设所述宏 基站的第一预留帧长为所述微基站所需最大下行帧长,且所述宏基站的第二预留帧长为 所述微基站所需最大上行帧长。
11、 根据权利要求 10所述方法, 其特征在于, 所述调整宏基站的数据帧在所述宏 基站的数据帧中预留出预留帧长还包括:
当预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长时,判断所述宏 基站覆盖范围内是否已有其他与所述宏基站同频部署的微基站;
若不存在,则将所述第三偏移时间以及所述第一预留帧长和所需上行帧长发送至所 述宏基站,所述宏基站在偏移宏基站的数据帧的起始位置第三偏移时间后和在宏基站的 数据帧的 TTG开始前, 预留所述第一预留帧长, 并在紧跟宏基站的数据帧的 TTG结束后 预留与所述所需上行帧长相同的第二预留帧长;
若存在,则比较所述所需上行帧长与对应的其他与所述宏基站同频部署的微基站的 上行帧长,若所述所需上行帧长大于其他与所述宏基站同频部署的微基站的数据帧的上 行帧长, 则将所述所需上行帧长发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧 的起始位置第三偏移时间后和在宏基站的数据帧的 TTG开始前,预留所述第一预留帧长, 并在紧跟宏基站的数据帧的 TTG结束后预留与所述所需上行帧长相同的所述第二预留帧 长。
12、 根据权利要求 10所述方法, 其特征在于, 所述调整宏基站的数据帧在所述 宏基站的数据帧中预留出预留帧长还包括:
当预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长,且所述宏基站 的第二预留帧长为所述微基站所需最大上行帧长时,将所述预设的第三偏移时间以及所 述微基站所需最大下行帧长和所述微基站所需最大上行帧长发送至所述宏基站,所述宏 基站在偏移宏基站的数据帧的起始位置第三偏移时间后和在宏基站的数据帧的 TTG开始 前, 预留所述第一预留帧长, 并在紧跟宏基站的数据帧的 TTG结束后预留所述第二预留 帧长。
13、 根据权利要求 10、 11或 12所述方法, 其特征在于, 所述调整所述微基站的 数据帧在所述宏基站的预留帧长内进行资源传输具体包括:
根据所述宏基站的数据帧信息,所述微基站将微基站的数据帧的帧长同步为所述宏 基站的数据帧的帧长;
所述微基站调整微基站的数据帧在偏移所述宏基站的数据帧的起始位置第三偏移 时间后, 在所述所需下行帧长内进行资源传输, 并在紧跟所述宏基站的数据帧的 TTG结 束后的所述所需上行帧长内进行资源传输。
14、 根据权利要求 4所述方法, 其特征在于, 所述获取微基站的带宽信息具体包 括- 所述微基站入网认证成功后, 由微基站认证授权计费服务器确定允许发放给所述微 基站的带宽信息;
安全网关或所述微基站在收到所述微基站认证授权计费服务器返回的携带所述带 宽信息的入网认证成功消息后, 向微基站配置中心发起配置请求, 所述配置请求中携带 有所述微基站的位置信息和带宽信息;
所述微基站配置中心从所述配置请求中获取所述带宽信息和位置信息; 或者,
所述微基站入网认证成功后, 由微基站认证授权计费服务器确定允许发放给所述微 基站的带宽信息;
安全网关或所述微基站在收到所述微基站认证授权计费服务器返回的入网认证成 功消息后, 向微基站配置中心发起配置请求;
所述微基站配置中心接收到所述配置请求后, 向所述微基站认证授权计费服务器获 取所述微基站的带宽信息和位置信息。
15、 根据权利要求 14所述方法, 其特征在于, 所述获取所述宏基站的数据帧信 息具体包括:
根据所述微基站的位置信息査询覆盖所述微基站的宏基站的位置信息;
根据所述宏基站的位置信息获取覆盖所述微基站的宏基站的数据帧信息。
16、 根据权利要求 14所述方法, 其特征在于, 所述获取所述宏基站的数据帧信 息具体包括- 所述微基站触发终端设备解析所述宏基站发送的数据帧的下行子帧的下行链路一 映射, 获取所述微基站所在区域的宏基站标识, 并在所述微基站入网认证时携带所述宏 基站标识;
所述安全网关或微基站在收到所述微基站认证授权计费服务器返回的入网认证成 功消息后,向微基站配置中心发起配置请求,并在所述配置请求中携带所述宏基站标识; 微基站配置中心从所述配置请求中获取到所述宏基站标识后,根据所述宏基站标识 获取覆盖所述微基站的宏基站的数据帧信息。
17、 根据权利要求 4所述方法,其特征在于, 当所述微基站退网成功后,还包括: 获取所述微基站所释放的带宽信息以及所述所需下行帧长和所需上行帧长; 判断所述宏基站覆盖范围内是否已存在多个与所述宏基站同频部署的微基站,若存 在, 则根据所述微基站的所述位置信息, 将所述所需下行帧长和所需上行帧长与保存在 列表中的对应的其他与所述宏基站同频部署的微基站的下行帧长和上行帧长相比较,若 所述所需下行帧长和所需上行帧长大于其他与所述宏基站同频部署的微基站的数据帧 的下行帧长和上行帧长, 则重新选择列表中的所述下行帧长和上行帧长中的最大值, 并 将选择出的最大值发送至所述宏基站以调整在所述宏基站的数据帧上预留的下行帧长 和上行帧长,或者若所述所需下行帧长大于其他与所述宏基站同频部署的微基站的数据 帧的下行帧长, 则重新选择列表中的所述下行帧长中的最大值, 并将选择出的最大值发 送至所述宏基站以调整在所述宏基站的数据帧上预留的下行帧长,或者若所述所需上行 帧长大于其他与所述宏基站同频部署的微基站的数据帧的上行帧长, 则重新选择列表中 的所述上行帧长中的最大值, 并将选择出的最大值发送至所述宏基站以调整在所述宏基 站的数据帧上预留的上行帧长; 若不存在, 则取消在所述宏基站的数据帧上预留的下行 帧长和上行帧长。
18、 根据权利要求 4所述方法,其特征在于, 当所述微基站退网成功后,还包括: 判断所述宏基站覆盖范围内是否已存在多个与所述宏基站同频部署的微基站,若存 在, 则保持在所述宏基站的数据帧上预留的下行帧长和上行帧长; 若不存在, 则取消在 所述宏基站的数据帧上预留的下行帧长和上行帧长。
19、 一种微基站配置中心, 其特征在于, 包括:
调整模块, 用于调整宏基站的数据帧, 在所述宏基站的数据帧中预留出预留帧长, 所述宏基站的数据帧在所述预留帧长外进行资源传输;
配置模块,用于配置在所述宏基站的覆盖范围内且与所述宏基站同频部署的微基站 的数据帧, 使微基站的数据帧在所述宏基站的预留帧长内进行资源传输。
20、 根据权利要求 19所述的微基站配置中心, 其特征在于, 还包括: 第一获取模块, 用于获取微基站的带宽信息;
第二获取模块, 用于获取覆盖所述微基站的宏基站的数据帧信息;
计算模块, 用于根据所述第一获取模块获取的微基站的带宽信息, 计算所述微基站 的数据帧的所需下行帧长和所需上行帧长;
则所述配置模块具体包括:
发送子模块, 用于发送预设的偏移时间信息、 所述第二获取模块获取的所述宏基站 的数据帧信息以及所述计算模块计算得到的所述微基站的数据帧的所需下行帧长和所 需上行帧长至所述微基站;
配置子模块, 用于根据所述发送子模块发送的信息配置所述微基站的数据帧, 以调 整所述微基站的数据帧在所述宏基站的预留帧长内传输; 所述偏移时间信息用于设定所 述微基站下行传输的数据帧和上行传输的数据帧的起始时间。
21、 根据权利要求 20所述的微基站配置中心, 其特征在于, 还包括: 第一预设模块, 用于预设所述偏移时间信息, 所述偏移时间信息包括第一偏移时间 和第二偏移时间或者第三偏移时间;其中所述第二偏移时间与第一偏移时间的差值大于 所述微基站所需最大下行帧长和所述宏基站的数据帧的传输 /接收转换时隙 TTG之和, 且所述第二偏移时间小于所述宏基站的帧长与微基站所需最大上行帧长的差值; 所述第 三偏移时间小于所述宏基站的下行子帧帧长与微基站所需最大下行帧长的差值; 第二预设模块,用于预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧 长, 和 /或预设所述宏基站的第二预留帧长为所述微基站所需最大上行帧长。
22、 根据权利要求 21所述的微基站配置中心, 其特征在于, 所述调整模块具体 包括:
第一判断子模块,用于判断所述宏基站覆盖范围内是否已存在其他与所述宏基站同 频部署的微基站;
第一处理子模块,用于在所述第一判断模块判断不存在其他与所述宏基站同频部署 的微基站时, 将所述第一偏移时间、 第二偏移时间以及所述所需下行帧长和所需上行帧 长发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间后, 预留与所述所需下行帧长相同的第一预留帧长, 并在偏移宏基站的数据帧的起始位置第 二偏移时间后, 预留与所述所需上行帧长相同的第二预留帧长; 或者将所述第三偏移时 间以及所述第一预留帧长和所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站 的数据帧的起始位置第三偏移时间后和在宏基站的数据帧的 TTG开始前,预留所述第一 预留帧长, 并在紧跟宏基站的数据帧的 TTG结束后预留与所述所需上行帧长相同的第二 预留帧长;
第一比较处理子模块,用于在所述第一判断模块判断存在其他与所述宏基站同频部 署的微基站时, 比较所述所需下行帧长和所需上行帧长与对应的其他与所述宏基站同频 部署的微基站的数据帧的下行帧长和上行帧长; 若所述所需下行帧长和所需上行帧长分 别大于其他与所述宏基站同频部署的微基站的数据帧的下行帧长和上行帧长, 则将所述 所需下行帧长和所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的 起始位置第一偏移时间后, 预留与所述所需下行帧长相同的第一预留帧长, 并在偏移宏 基站的数据帧的起始位置第二偏移时间后,预留与所述所需上行帧长相同的第二预留帧 长;或者若所述所需下行帧长大于其他与所述宏基站同频部署的微基站的数据帧的下行 帧长, 则将所述所需下行帧长发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的 起始位置第一偏移时间后, 预留与所述所需下行帧长相同的第一预留帧长; 或者若所述 所需上行帧长大于其他与所述宏基站同频部署的微基站的数据帧的上行帧长, 则将所述 所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的起始位置第二偏 移吋间后, 预留与所述所需上行帧长相同的第二预留帧长; 或者比较所述所需上行帧长 与对应的其他与所述宏基站同频部署的微基站的上行帧长,若所述所需上行帧长大于其 他与所述宏基站同频部署的微基站的数据帧的上行帧长,则将所述所需上行帧长发送至 所述宏基站,所述宏基站在偏移宏基站的数据帧的起始位置第三偏移时间后和在宏基站 的数据帧的 TTG开始前, 预留所述第一预留帧长, 并在紧跟宏基站的数据帧的 TTG结束 后预留与所述所需上行帧长相同的所述第二预留帧长。
23、 根据权利要求 21所述的微基站配置中心, 其特征在于, 所述调整模块具体 包括:
第二处理子模块,用于当预设所述宏基站的第一预留帧长为所述微基站所需最大下 行帧长时, 将所述预设的第一偏移时间和第二偏移时间、 所述微基站所需最大下行帧长 以及所述所需上行帧长发送至所述宏基站,所述宏基站在偏移宏基站的数据帧的起始位 置第一偏移时间后, 预留所述第一预留帧长, 并在偏移宏基站的数据帧的起始位置第二 偏移时间后, 根据所述所需上行帧长预留第二预留帧长; 或者当预设所述宏基站的第二 预留帧长为所述微基站所需最大上行帧长时,将所述预设的第一偏移时间和第二偏移时 间、 所述所需下行帧长以及所述微基站所需最大上行帧长发送至所述宏基站, 所述宏基 站在偏移宏基站的数据帧的起始位置第一偏移时间后,根据所述所需下行帧长预留第一 预留帧长, 并在偏移宏基站的数据帧的起始位置第二偏移时间后, 预留所述第二预留帧 长; 或者当所述宏基站的第一预留帧长为所述微基站所需最大下行帧长, 且所述宏基站 的第二预留帧长为所述微基站所需最大上行帧长时,将所述预设的第一偏移时间和第二 偏移时间以及所述微基站所需最大下行帧长和所述微基站所需最大上行帧长发送至所 述宏基站, 所述宏基站在偏移宏基站的数据帧的起始位置第一偏移时间后, 预留所述第 一预留帧长, 并在偏移宏基站的数据帧的起始位置第二偏移吋间后, 预留所述第二预留 帧长; 或者当预设所述宏基站的第一预留帧长为所述微基站所需最大下行帧长, 且所述 宏基站的第二预留帧长为所述微基站所需最大上行帧长时,将所述预设的第三偏移时间 以及所述微基站所需最大下行帧长和所述微基站所需最大上行帧长发送至所述宏基站, 所述宏基站在偏移宏基站的数据帧的起始位置第三偏移时间后和在宏基站的数据帧的 TTG开始前, 预留所述第一预留帧长, 并在紧跟宏基站的数据帧的 TTG结束后预留所述 第二预留帧长。
24、 根据权利要求 20所述的微基站配置中心, 其特征在于, 还包括: 第三获取模块, 用于当所述微基站退网成功后, 获取所述微基站所释放的带宽信息 以及所述所需下行帧长和所需上行帧长;
第二判断模块,用于判断所述宏基站覆盖范围内是否已存在多个与所述宏基站同频 部署的微基站; 第二比较处理模块,用于在所述第二判断模块判断存在其他与所述宏基站同频部署 的微基站时, 根据所述微基站的所述位置信息以及所述第三获取模块获取的信息, 将所 述所需下行帧长和所需上行帧长与保存在列表中的对应的其他与所述宏基站同频部署 的微基站的下行帧长和上行帧长相比较,若所述所需下行帧长和所需上行帧长大于其他 与所述宏基站同频部署的微基站的数据帧的下行帧长和上行帧长, 则重新选择列表中的 所述下行帧长和上行帧长中的最大值, 并将选择出的最大值发送至所述宏基站以调整在 所述宏基站的数据帧上预留的下行帧长和上行帧长,或者若所述所需下行帧长大于其他 与所述宏基站同频部署的微基站的数据帧的下行帧长, 则重新选择列表中的所述下行帧 长中的最大值,并将选择出的最大值发送至所述宏基站以调整在所述宏基站的数据帧上 预留的下行帧长,或者若所述所需上行帧长大于其他与所述宏基站同频部署的微基站的 数据帧的上行帧长, 则重新选择列表中的所述上行帧长中的最大值, 并将选择出的最大 值发送至所述宏基站以调整在所述宏基站的数据帧上预留的上行帧长;
第三处理模块,用于在所述第二判断模块判断不存在其他与所述宏基站同频部署的 微基站时, 取消在所述宏基站的数据帧上预留的下行帧长和上行帧长。
25、 根据权利要求 20所述的微基站配置中心, 其特征在于, 还包括: 第三判断模块,用于判断所述宏基站覆盖范围内是否已存在多个与所述宏基站同频 部署的微基站;
第四处理模块,用于在所述第三判断模块判断存在其他与所述宏基站同频部署的微 基站时, 保持在所述宏基站的数据帧上预留的下行帧长和上行帧长; 在所述第三判断模 块判断不存在其他与所述宏基站同频部署的微基站时,取消在所述宏基站的数据帧上预 留的下行帧长和上行帧长。
26、 一种微基站和宏基站间数据帧调整系统, 其特征在于, 包括: 如权利要求 19-25所述的微基站配置中心、 微基站和宏基站,
所述微基站, 用于接收所述微基站配置中心发送的所述宏基站的数据帧信息、所述 所需下行帧长和所需上行帧长以及偏移吋间信息, 以调整所述微基站的数据帧在所述宏 基站的预留帧长内传输;
所述宏基站, 用于接收所述微基站配置中心发送的数据帧调整信息, 以调整所述宏 基站的数据帧上预留的下行帧长和上行帧长。
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