WO2016029690A1 - Information processing method, system and base station - Google Patents

Information processing method, system and base station Download PDF

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Publication number
WO2016029690A1
WO2016029690A1 PCT/CN2015/075284 CN2015075284W WO2016029690A1 WO 2016029690 A1 WO2016029690 A1 WO 2016029690A1 CN 2015075284 W CN2015075284 W CN 2015075284W WO 2016029690 A1 WO2016029690 A1 WO 2016029690A1
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WO
WIPO (PCT)
Prior art keywords
user equipments
base station
downlink control
channel state
control information
Prior art date
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PCT/CN2015/075284
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French (fr)
Inventor
Xiaodong Yu
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Lenovo (Beijing) Co., Ltd.
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Publication date
Application filed by Lenovo (Beijing) Co., Ltd. filed Critical Lenovo (Beijing) Co., Ltd.
Publication of WO2016029690A1 publication Critical patent/WO2016029690A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/32—Hierarchical cell structures
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to a field of electronic technology, in particular to an information processing method, a system and a base station.
  • a user equipment wants to acquire configuration source distributed by a base station
  • UE needs to acquire a downlink control information (DCI) distributed by the base station.
  • DCI downlink control information
  • UE can acquire corresponding configuration resource at a position at which the base station transmits the configuration resource. Therefore, UE will acquire scheduling information of the base station from the received DCI in the physical downlink control channel (PDCCH) distributed by the base station.
  • PDCCH physical downlink control channel
  • UE can determine configuration resources such as time domain resource position, frequency domain resource position, modulation encoding mode of base station transmission, and so on acquired from the downlink transmission.
  • each DCI information can only indicate or schedule only one UE at the same time, but there are a limited number of DCIs in the base station, and thus DCIs distributed by the base station at the same time are limited, which results in a limited number of access users under the base station and reduces use efficiency of the base station.
  • an information processing method, a system and a base station capable of solving the problem that the number of the access users of the base station is limited and the use efficiency of the base station is low.
  • an information processing method applicable to a first base station M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations, wherein the coverage range of the first base station includes the coverage range of the M second base stations, M and N being positive integers greater than 1, the method comprising: acquiring channel state information of N user equipments, wherein the channel state information represents state information of a channel between each of the user equipments and a corresponding second base station; and transmitting same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
  • the acquiring channel state information of N user equipments comprises one of: receiving channel state information reported by each of the N user equipments; and receiving channel state information of each of the user equipments measured by the second base station.
  • the channel state information of each of the user equipments measured by the second base station comprises a downlink measuring pilot transmitted from the second base station, and UE receives the downlink measuring pilot to measure and report the channel state information, or UE transmits an uplink reference signal, the second base station receives the uplink reference signal, and calculates and acquires the channel state information.
  • the acquiring channel state information of N user equipments comprises: acquiring channel quality indicator and/or precoding matrix indicator and/or rank indicator reported by each of the N user equipments, wherein the channel quality indicator represents quality of a channel between the user equipment and a corresponding second base station, the precoding matrix indicator represents a precoding mode of a signal, and the rank indicator represents the number of data layers of the channel.
  • the N user equipments are classified according to the channel state information of each of the user equipments, and the classification of the N user equipments comprises: acquiring a first indication value representative of channel quality from the channel quality information of each of the user equipments; determining user equipments whose difference value of the first indication value is within a first preset range as the same classification; or determining user equipments that report a same precoding matrix indicator as the same classification; or determining user equipments having the same reported rank indicator as the same classification.
  • the acquiring channel state information reported by N user equipments further comprises: acquiring data traffic amount of each of the N user equipments.
  • the classifying the N user equipments according to the channel state information reported by each of the user equipments further comprises: classifying the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  • the classification of the N user equipments comprises: acquiring a second indication value representative of a channel state from the channel state information of each of the user equipments; and determining user equipments whose difference value of the second indication value is within a second preset range and difference value of the data traffic amount is within a third preset range as the same classification.
  • the transmitting same downlink control information to the user equipments classified with the channel state information further comprises: transmitting the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  • the configuration resource comprises downlink resource allocation type, time domain resource position, frequency domain resource position, modulation encoding mode, hybrid automatic retransmission request process, downlink data channel transmission scheduling information, and power control information.
  • the transmitting same downlink control information to the user equipments classified with the channel state information further comprises: directly transmitting the same downlink control information to the user equipments of the same classification; or transmitting the same downlink control information to the user equipments of the same classification via the second base stations.
  • the transmitting same downlink control information to the user equipments classified with the channel state information is in particular as follows: scrambling the downlink control information by using a same scrambling sequence, and transmitting the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
  • a system comprising: a first base station and M second base stations different from the first base station, wherein the M second base stations are included within a coverage range of the first base station, N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the first base station includes the coverage range of the second base stations, M and N being positive integers greater than 1.
  • the first base station is configured to acquire channel state information of the N user equipments, the channel state information representing a state of a channel between each of the user equipments and a corresponding second base station, and transmit same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
  • the second base station is configured to perform data transmission with the user equipment corresponding to the downlink control information at a time domain resource position and a frequency domain resource position configured by the downlink control information.
  • the first base station is in particular configured to receive channel state information of each of the N user equipments reported by each of the user equipments or receive channel state information of each of the user equipments measured by the second base stations.
  • the first base station is in particular configured to transmit the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base station determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  • the first base station is in particular configured to acquire data traffic amount of each of the N user equipments and classify the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  • the first base station is in particular configured to scramble the downlink control information by using a same scrambling sequence and transmit the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
  • a base station M second base stations included within a coverage range of the base station, and N user equipments distributed within a coverage range of the M second base stations, wherein the coverage range of the base station includes the coverage range of the second base station, M and N being positive integers greater than 1, comprising: an acquisition module configured to acquire channel state information of N user equipments, wherein the channel state information represents a state of a channel between each of the user equipments and a corresponding second base station; and an instruction distribution module configured to transmit same downlink control information to the user equipments classified with the channel state information, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different base station.
  • the first base station acquires the channel state information of N user equipments, and finally the first base station transmits the same downlink control information to the user equipments classified with the channel state information. In this way, it can avoid the first base station from distributing different downlink control information to each of the user equipments under the first base station, thereby resulting in the problem that the number of access users under the first base station is limited.
  • Fig. 1 a schematic diagram of a structure of a cellular system in an embodiment of the present disclosure
  • Fig. 2 is a flowchart of an information processing method in an embodiment of the present disclosure
  • Fig. 3 is a schematic diagram of a structure of a long term evolution (LTE) /long term evolution advanced (LTE-A) system in an embodiment of the present disclosure.
  • LTE long term evolution
  • LTE-A long term evolution advanced
  • a first base station acquires channel state information of N user equipments, classifies the N user equipments according to the channel state information of each of the user equipments, and finally the first base station transmits same downlink control information to the user equipments of the same classification. In this way, it can avoid the first base station from distributing different downlink control information to each of the user equipments at the first base station, thereby resulting in the problem that the number of access users at the first base station is limited.
  • an information processing method provided in the embodiment of the present disclosure is applied to a first base station.
  • M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations (as shown in Fig. 1) , wherein the coverage range of the first base station includes the coverage range of the second base station.
  • the first base station is a macro base station
  • the second base stations are a plurality of micro base stations distributed under the macro base station, wherein the micro base station can be a micro cell base station, a WLAN base station or a millimeter wave base station.
  • FIG. 2 it is a flowchart of an information processing method in the embodiment of the present disclosure. The method comprises the following steps.
  • channel state information of N user equipments is acquired.
  • the channel state information represents state information of a channel between each of the user equipments and a corresponding second base station.
  • the N user equipments are classified according to the channel state information of each of the user equipments.
  • same downlink control information is transmitted to user equipments of a same classification.
  • the embodiment of the present disclosure needs to achieve the purpose of distributing the same downlink control information DCI to user equipments of the same classification under the first base station.
  • step S201 needs to be performed.
  • acquiring channel state information of N user equipments under the first base station can be realized through a channel measurement report uploaded periodically by each of the user equipments or in a way that the first base station distributes a channel state information request to the user equipments, so that each of the user equipments detects channel state information between the user equipment and the second base station currently in communication therewith according to the channel state information request and then transmits the channel state information to the second base station, and finally the second base station transmits the channel state information to the first base station.
  • acquiring the channel state information of N user equipments can be acquiring channel quality indicator (CQI) and/or rank indicator (RI) and/or precoding matrix indicator (PMI) reported by each of the N user equipments.
  • CQI channel quality indicator
  • RI rank indicator
  • PMI precoding matrix indicator
  • CQI is used to reflect channel quality of a downlink channel.
  • 0-15 can be used to represent the channel quality of the downlink channel, 0 represents that the channel quality of the downlink channel is the worst, and 15 represents that the channel quality of the downlink channel is the best.
  • PMI is used to represent the precoding matrix selected to be used for maximizing channel capacity.
  • the data transmitted by the downlink channel is multiplied with the precoding matrix to realize precoding process.
  • each of the user equipments After each of the user equipments acquires the channel state information between the user equipment and the second base station, it transmits the acquired channel state information to the first base station, and of course can transmit the acquired channel state information to the first base station via the second base station.
  • the second base stations can also acquire the channel state information corresponding to the user equipment. After acquiring the channel state information corresponding to the user equipment, the second base station directly transmits the channel state information to the first base station.
  • the channel state information corresponds to one corresponding user equipment.
  • the first base station can directly receive the channel state information reported by each of the N user equipments or receive the channel state information of each of the user equipments measured by the second base station.
  • the first base station After acquiring the channel state information corresponding to the N user equipment respectively, the first base station will classify the N user equipments.
  • the specific classifying modes are as follows.
  • a first indication value representative of channel quality is acquired from the channel quality information of each of the user equipments, wherein the first indication value represents the quality of the channel currently used by the user equipment, and may be a CQI value.
  • CQI of a user equipment A is 8
  • CQI of a user equipment B is 10
  • CQI of a user equipment C is 7
  • CQI of a user equipment D is 8,
  • CQI of a user equipment is 11, and so on.
  • the first base station determines the user equipment B and the user equipment E as the user equipments of the same classification, and performs modulation encoding on the downlink data according to the modulation encoding mode corresponding to the lowest CQI (10) . At this time, the classification of the user equipments is completed.
  • the user equipments of the same classification are under different second base stations respectively.
  • the user equipment A, the user equipment C, and the user equipment D belong to the same classification, then the user equipment A is under one second base station, and the user equipment C is under another second base station, and of course, the second base station under which the user equipment D is located is different from both the second base station under which the user equipment A is located and the second base station under which the user equipment C is located, thus guaranteeing that the downlink control information received by each of the user equipments under each second base station is different from each other, so as to avoid different user equipments from resolving resources at the same resource position of the second base station.
  • the N user equipments can further be classified according to PMI or RI, i.e., the user equipments having the same or similar PMI can be classified as the same classification, or the user equipments having the same or similar RI can be classified as the same classification, or the user equipments having the same PMI and the same RI can be classified as the same classification.
  • the specific classifying process is basically as the same as the classifying process according to CQI, and thus details are not further described herein.
  • the user equipments can be classified by combining CQI and RI in the channel state information, i.e., the user equipments having similar CQI and same RI can be classified as the same classification; or the user equipments can be classified by combining CQI and PMI in the channel state information, i.e., the user equipments having similar CQI and similar PMI can be classified as the same classification; or the user equipments can be classified by combining RI and PMI in the channel state information, i.e., the user equipments having similar RI and similar PMI can be classified as the same classification.
  • the user equipments can be classified by combining CQI, PMI, RI in the channel state information, that is, the user equipments having the same RI, similar PMI and similar CQI can be classified as the same classification.
  • Data traffic amount of each of the N user equipments is acquired, and the N user equipments are classified according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  • the first base station when acquiring the channel state information of each of the N user equipments, the first base station will also acquire the data traffic amount corresponding to each of the user equipments, the data traffic amount represents data amount of communication between each of the user equipments and the second base station.
  • the first base station will initially classify the N user equipments according to the channel state information reported by the N user equipments.
  • Such classifying mode can be the classifying mode as described in Fig. 1, and thus the details are not further described herein.
  • the first base station After the classification based on the channel state information is completed, the first base station will classify according to the traffic data amount corresponding to each of the user equipments.
  • a second indication value representative of a channel state is acquired from the channel state information of each of the user equipments, and the user equipments whose difference value of the second indication value is within the second preset range and different value of the traffic data amount is within a third preset range are determined as the same classification.
  • the user equipments having similar traffic data amount can be classified as the same classification.
  • no limitation is made to the second preset range and the third preset range.
  • the second preset range and the third preset range can be correspondingly adjusted in different application scenes.
  • each of the user equipments which are classified as the same classification is under a different second base station.
  • the first base station After the classification is completed, when distributing the downlink control information, the first base station will transmit the same downlink control information to the user equipments of the same classification. For example, the user equipment A, the user equipment C, and the user equipment D belong to the user equipments of the same classification. At this time, the first base station distributes the same downlink control information to the user equipment A, the user equipment C, and the user equipment D.
  • Such downlink control information can be distributed to a plurality of different user equipments, which avoids the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the N user equipments under the first base station, thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
  • the downlink control information can make the user equipments of the same classification to acquire the configuration resource according to the downlink control information.
  • the configuration resource comprises resources such as downlink resource allocation type, time domain resource position, frequency domain resource position, modulation encoding mode, hybrid automatic retransmission request process, uplink data channel transmission scheduling information, and power control information and so on.
  • the first base station when distributing the same downlink control information to the user equipments, the first base station will also distribute the downlink control information to the second base stations, wherein the downlink control information is used to indicate the position at which the second base station distributes the time domain resource and the frequency domain resource to the user equipment. In this way, it is guaranteed that the second base station is able to determine the position to distribute the time domain resource and the frequency domain resource accurately.
  • the first base station will scramble the downlink control information through a scrambling sequence and transmit the downlink control information scrambled by the same scrambling sequence to the user equipments of the same classification.
  • the user equipment After receiving the downlink control information distributed from the first base station, the user equipment descrambles the downlink control information, so that the user equipment can acquire the time domain resource position and the frequency domain resource position indicated in the downlink control information, so that the user equipment can resolve the corresponding resource at the time domain resource position and the frequency domain resource position corresponding to the second base station.
  • the first base station can also transmit the downlink control information to the second base stations, and then the same downlink control information is distributed to the user equipments of the same classification via the second base stations. That is, the downlink control information is forwarded via the second base station.
  • the final effect to be realized is to distribute the downlink control information to the user equipments.
  • the first base station After distributing the same downlink control information to the user equipments of the same classification, the first base station will further transmit a channel measurement request to the user equipments, or transmit the channel measurement request via the second base stations. As such, the first base station can acquire the channel state information between the use equipments and the second base stations in real time, so that the first base station will classify the user equipments under the second base stations in real time.
  • the specific classifying mode has been described in the above embodiment, and thus the details will not be further described herein.
  • the first base station will further receive a uplink data request and/or hybrid automatic retransmission request information and/or channel state information uploaded by the user equipments, or receive the uplink data request and/or hybrid automatic retransmission request information and/or channel state information of the user equipments transmitted by the second base station, so that the first base station can monitor the channel state between the second base stations and the user equipments in real time, so as to provide condition for the classification of the user equipments.
  • the first base station acquires the channel state information of the N user equipments, classifies the N user equipments according to the channel state information of each of the user equipments, and finally transmits the same downlink control information to the user equipments of the same classification.
  • Such downlink control information can be distributed to a plurality of different user equipments, so as to avoid the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the N user equipments under the first base station, thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
  • Fig. 3 illustrates a schematic diagram of LTE/LTE-A system in the embodiment of the present disclosure.
  • the LTE/LTE-A system comprises a macro base station A and micro base stations B, C, and D under the macro base station A.
  • the macro base station A will directly acquire the channel state information between the six user equipments and their respectively corresponding micro base stations, or acquire the channel state information between the six user equipments and their respectively corresponding micro base stations from the channel quality measurement report uploaded by the six user equipments through the micro base stations B, C, and D.
  • the channel station information comprises RI/PMI/CQI and so on.
  • the macro base station A After acquiring the RI/PMI/CQI of each of the user equipments, the macro base station A will classify the six user equipments.
  • the specific classifying mode has been described in detail in the first mode, and thus the details will not be further described herein.
  • the final classification result is that the user equipments 1, 3 and 5 belong to a same classification, and the user equipments 2, 4, and 6 belong to a same classification.
  • the macro base station A will distribute a first DCI.
  • the first DCI will be carried in the downlink control channel.
  • the DCI comprises information such as resource allocation information, time domain resource information, frequency domain resource position, adjustment encoding mode, transmission mode, and so on.
  • DCI distributed to the user equipments is scrambled by a particular scrambling mode. After receiving the first DCI, the user equipment will descramble according to the scrambling sequence used by the scrambling mode, so as to obtain a final first DCI.
  • a second DCI is distributed for the user equipments 2, 4, and 6.
  • the second DCI is different from the first DCI.
  • the information such as the resource allocation and so on carried by the second DCI is also different, so as to guarantee that DCIs received by the user equipments under the micro base station B are different, DCIs received by the user equipments under the micro base station C are different, and DCIs received by the user equipments under the micro base station D are different.
  • the macro base station A When distributing DCI to the user equipment, the macro base station A will distribute the first DCI and the second DCI to the micro base stations B, C, and D. In this way, the micro base stations B, C, and C are able to determine a predefined resource allocation position or a resource allocation position indicated by DCI of the macro base station A, wherein the resource allocation position comprises the time domain resource position and the frequency domain resource position, and finally distributes data information to the user equipments according to the resource allocation information, modulation encoding mode, and transmission mode and so on indicated by DCI.
  • the user equipment 1 After receiving the first DCI, the user equipment 1 will resolve the data information configured for the user equipment 1 according to the resource allocation position (including the time domain resource position and frequency domain resource position) , modulation encoding mode, transmission mode and so on indicated by the first DCI. Likewise, after receiving the first DCI, the user equipment 3 will resolve the data information configured for the user equipment 3 according to the resource allocation position, modulation encoding mode, and transmission mode and so on indicated by the first DCI.
  • the modes in which other user equipments acquire the resource configuration can be completed based on the above modes, and thus the details are not further described herein.
  • the first base station classifies the N user equipments according to the channel state information of each of the user equipments, and finally transmits the same downlink control information to the user equipments of the same classification.
  • the user equipments of the same classification use the same predefined descrambling mode to resolve the DCI.
  • a piece of downlink control information can be distributed to a plurality of different user equipments, so as to avoid the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the N user equipments under the first base station, thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
  • a system comprising a first base station and M second base stations different from the first base station, the M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the first base station includes the coverage range of the second base stations, M and N being positive integers greater than 1.
  • the first base station is in particular configured to acquire channel state information of N user equipments, the channel state information represents a state of a channel between the user equipment and a corresponding second base station.
  • the first base station is further configured to classify the N user equipments according to the channel state information of each of the user equipments, and transmit same downlink control information to user equipments of a same classification, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
  • the second base station is configured to perform data transmission with the user equipment corresponding to the downlink control information at a time domain resource position and a frequency domain resource position configured by the downlink control information.
  • the first base station is in particular configured to receive channel state information of each of the N user equipments reported by each of the N user equipments or receive channel state information of each of the N user equipments measured by the second base station.
  • the first base station is in particular configured to transmit the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  • the first base station is in particular configured to acquire data traffic amount of each of the N user equipments and classify the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  • the first base station is in particular configured to acquire a second indication value representative of the channel state from the channel state information of each of the user equipments, and determine the user equipments whose difference value of the second indication values is within the second preset range and difference value of the data traffic amount is within the third preset range as the same classification.
  • a base station M second base stations are included within a coverage range of the base station, N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the base station includes the coverage range of the second base stations, M and N are positive integers greater than 1.
  • the base station comprises: an acquisition module configured to acquire channel state information of N user equipments, wherein the channel state information represents a state of a channel between each of the user equipments and a corresponding second base station; a classification module configured to classify the N user equipments according to the channel state information of each of the user equipments; and an instruction distribution module configured to transmit same downlink control information to user equipments of the same classification, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.

Abstract

An information processing method, a system and a base station relate to a field of electronic technology. In the information processing method, the first base station acquires the channel state information of N user equipments, and transmits same downlink control information to the user equipments classified with the channel state information. In this way, the problem that the number of access users under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the user equipments under the first base station can be avoided.

Description

INFORMATION PROCESSING METHOD, SYSTEM AND BASE STATION TECHNICAL FIELD
The present disclosure relates to a field of electronic technology, in particular to an information processing method, a system and a base station.
BACKGROUND
At present, in a cellular network, if a user equipment (UE) wants to acquire configuration source distributed by a base station, UE needs to acquire a downlink control information (DCI) distributed by the base station. Through DCI, UE can acquire corresponding configuration resource at a position at which the base station transmits the configuration resource. Therefore, UE will acquire scheduling information of the base station from the received DCI in the physical downlink control channel (PDCCH) distributed by the base station. Through this scheduling information, UE can determine configuration resources such as time domain resource position, frequency domain resource position, modulation encoding mode of base station transmission, and so on acquired from the downlink transmission.
However, as technology has been improved, accesses of UE in the cell of the base station are increasingly growing, and DCI distributed by the base station to each UE is scrambled by using UE’s exclusive scrambling sequence. Therefore, each DCI information can only indicate or schedule only one UE at the same time, but there are a limited number of DCIs in the base station, and thus DCIs distributed by the base station at the same time are limited, which results in a limited number of access users under the base station and reduces use efficiency of the base station.
SUMMARY
In embodiments of the present disclosure, there are provide an information processing method, a system and a base station capable of solving the problem that the number of the access users of the base station is limited and the use efficiency of the base station is low.
According to one aspect of the present disclosure, there is provided an information processing method applicable to a first base station, M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations, wherein the coverage range of the first base station includes the coverage range of the M second base stations, M and N being positive integers greater than 1, the method comprising: acquiring channel state information of N user equipments, wherein the channel state information represents state information of a channel between each of the user equipments and a corresponding second base station； and transmitting same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
Optionally, the acquiring channel state information of N user equipments comprises one of: receiving channel state information reported by each of the N user equipments； and receiving channel state information of each of the user equipments measured by the second base station. The channel state information of each of the user equipments measured by the second base station comprises a downlink measuring pilot transmitted from the second base station, and UE receives the downlink measuring pilot to measure and report the channel state information, or UE transmits an uplink reference signal, the second base station receives the uplink reference signal, and calculates and acquires the channel state information.
Optionally, the acquiring channel state information of N user equipments comprises: acquiring channel quality indicator and/or precoding matrix indicator and/or rank indicator reported by each of the N user equipments, wherein the channel quality indicator represents quality of a channel between the user equipment and a corresponding second base station, the precoding matrix indicator represents a precoding mode of a signal, and the rank indicator represents the number of data layers of the channel.
Optionally, the N user equipments are classified according to the channel state information of each of the user equipments, and the classification of the N user equipments  comprises: acquiring a first indication value representative of channel quality from the channel quality information of each of the user equipments； determining user equipments whose difference value of the first indication value is within a first preset range as the same classification； or determining user equipments that report a same precoding matrix indicator as the same classification； or determining user equipments having the same reported rank indicator as the same classification.
Optionally, the acquiring channel state information reported by N user equipments further comprises: acquiring data traffic amount of each of the N user equipments. The classifying the N user equipments according to the channel state information reported by each of the user equipments further comprises: classifying the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
Optionally, the classification of the N user equipments comprises: acquiring a second indication value representative of a channel state from the channel state information of each of the user equipments； and determining user equipments whose difference value of the second indication value is within a second preset range and difference value of the data traffic amount is within a third preset range as the same classification.
Optionally, the transmitting same downlink control information to the user equipments classified with the channel state information further comprises: transmitting the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
Optionally, the configuration resource comprises downlink resource allocation type, time domain resource position, frequency domain resource position, modulation encoding mode, hybrid automatic retransmission request process, downlink data channel transmission scheduling information, and power control information.
Optionally, the transmitting same downlink control information to the user equipments classified with the channel state information further comprises: directly transmitting the same downlink control information to the user equipments of the same  classification； or transmitting the same downlink control information to the user equipments of the same classification via the second base stations.
Optionally, the transmitting same downlink control information to the user equipments classified with the channel state information is in particular as follows: scrambling the downlink control information by using a same scrambling sequence, and transmitting the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
According to another aspect of the present disclosure, there is provided a system comprising: a first base station and M second base stations different from the first base station, wherein the M second base stations are included within a coverage range of the first base station, N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the first base station includes the coverage range of the second base stations, M and N being positive integers greater than 1.
The first base station is configured to acquire channel state information of the N user equipments, the channel state information representing a state of a channel between each of the user equipments and a corresponding second base station, and transmit same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
The second base station is configured to perform data transmission with the user equipment corresponding to the downlink control information at a time domain resource position and a frequency domain resource position configured by the downlink control information.
Optionally, the first base station is in particular configured to receive channel state information of each of the N user equipments reported by each of the user equipments or receive channel state information of each of the user equipments measured by the second base stations.
Optionally, the first base station is in particular configured to transmit the downlink control information to the second base stations corresponding to the user  equipments of the same classification, so that the second base station determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
Optionally, the first base station is in particular configured to acquire data traffic amount of each of the N user equipments and classify the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
Optionally, the first base station is in particular configured to scramble the downlink control information by using a same scrambling sequence and transmit the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
According to another aspect of the present disclosure, there is provided a base station, M second base stations included within a coverage range of the base station, and N user equipments distributed within a coverage range of the M second base stations, wherein the coverage range of the base station includes the coverage range of the second base station, M and N being positive integers greater than 1, comprising: an acquisition module configured to acquire channel state information of N user equipments, wherein the channel state information represents a state of a channel between each of the user equipments and a corresponding second base station； and an instruction distribution module configured to transmit same downlink control information to the user equipments classified with the channel state information, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different base station.
In the information processing method according to the embodiments of the present disclosure, the first base station acquires the channel state information of N user equipments, and finally the first base station transmits the same downlink control information to the user equipments classified with the channel state information. In this way, it can avoid the first base station from distributing different downlink control information to each of the user equipments under the first base station, thereby resulting in the problem that the number of access users under the first base station is limited.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 a schematic diagram of a structure of a cellular system in an embodiment of the present disclosure；
Fig. 2 is a flowchart of an information processing method in an embodiment of the present disclosure；
Fig. 3 is a schematic diagram of a structure of a long term evolution (LTE) /long term evolution advanced (LTE-A) system in an embodiment of the present disclosure.
DETAILED DESCRIPTION
In embodiments of the present disclosure, there is provided an information processing method. In this method, a first base station acquires channel state information of N user equipments, classifies the N user equipments according to the channel state information of each of the user equipments, and finally the first base station transmits same downlink control information to the user equipments of the same classification. In this way, it can avoid the first base station from distributing different downlink control information to each of the user equipments at the first base station, thereby resulting in the problem that the number of access users at the first base station is limited.
Technical solutions of the present disclosure will be described in detail through the accompanying figures and specific embodiments. It should be understood that embodiments of the present disclosure and specific technical solutions in the embodiments are just used for describing the technical solutions of the present disclosure, but not used for limiting the technical solutions. The technical solutions directly obtained by those skilled in the art based on the embodiments of the present disclosure also fall into the scope of the technical solutions of the present disclosure.
First Embodiment
At first, an information processing method provided in the embodiment of the present disclosure is applied to a first base station. M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a  coverage range of the M second base stations (as shown in Fig. 1) , wherein the coverage range of the first base station includes the coverage range of the second base station. In short, the first base station is a macro base station, and the second base stations are a plurality of micro base stations distributed under the macro base station, wherein the micro base station can be a micro cell base station, a WLAN base station or a millimeter wave base station.
As shown in Fig. 2, it is a flowchart of an information processing method in the embodiment of the present disclosure. The method comprises the following steps.
At S201, channel state information of N user equipments is acquired. Here, the channel state information represents state information of a channel between each of the user equipments and a corresponding second base station.
At S202, the N user equipments are classified according to the channel state information of each of the user equipments.
At S203, same downlink control information is transmitted to user equipments of a same classification.
The embodiment of the present disclosure needs to achieve the purpose of distributing the same downlink control information DCI to user equipments of the same classification under the first base station. In order to achieve this purpose, firstly all the user equipments under the first base station need to be classified, and then step S201 needs to be performed.
In the embodiment of the present disclosure, acquiring channel state information of N user equipments under the first base station can be realized through a channel measurement report uploaded periodically by each of the user equipments or in a way that the first base station distributes a channel state information request to the user equipments, so that each of the user equipments detects channel state information between the user equipment and the second base station currently in communication therewith according to the channel state information request and then transmits the channel state information to the second base station, and finally the second base station transmits the channel state information to the first base station.
Here, acquiring the channel state information of N user equipments can be acquiring channel quality indicator (CQI) and/or rank indicator (RI) and/or precoding matrix  indicator (PMI) reported by each of the N user equipments.
Here, CQI is used to reflect channel quality of a downlink channel. For example, 0-15 can be used to represent the channel quality of the downlink channel, 0 represents that the channel quality of the downlink channel is the worst, and 15 represents that the channel quality of the downlink channel is the best.
RI is used to indicate the number of spatial layers maximally supported by the downlink channel and is used to notify the base station of the number of spatial layers that the user equipment is able to support currently. In other words, for example, if RI＝1, then the user equipment supports transmission of 1 layer； if RI>1, then the user equipment supports transmission of multiple layers.
PMI is used to represent the precoding matrix selected to be used for maximizing channel capacity. In particular, the data transmitted by the downlink channel is multiplied with the precoding matrix to realize precoding process.
After each of the user equipments acquires the channel state information between the user equipment and the second base station, it transmits the acquired channel state information to the first base station, and of course can transmit the acquired channel state information to the first base station via the second base station.
Further, in the embodiment of the present disclosure, since the N user equipments are distributed under M second base stations respectively, the second base stations can also acquire the channel state information corresponding to the user equipment. After acquiring the channel state information corresponding to the user equipment, the second base station directly transmits the channel state information to the first base station. Of course, the channel state information corresponds to one corresponding user equipment.
Therefore, the first base station can directly receive the channel state information reported by each of the N user equipments or receive the channel state information of each of the user equipments measured by the second base station.
After acquiring the channel state information corresponding to the N user equipment respectively, the first base station will classify the N user equipments. The specific classifying modes are as follows.
First Mode
A first indication value representative of channel quality is acquired from the channel quality information of each of the user equipments, wherein the first indication value represents the quality of the channel currently used by the user equipment, and may be a CQI value. For example, CQI of a user equipment A is 8, CQI of a user equipment B is 10, CQI of a user equipment C is 7, CQI of a user equipment D is 8, and CQI of a user equipment is 11, and so on.
Determining the user equipments whose difference value of the first indication value is within a first preset range as a same classification. For example, CQI of the user equipment A is 8, CQI of the user equipment B is 10, CQI of the user equipment C is 7, CQI of the user equipment D is 8, and CQI of the user equipment is 11. At this time, the different value of CQI value between the user equipment A and the user equipment C as well as between the user equipment A and the user equipment D is less than or equal to 1, then the first base station determines the user equipment A, the user equipment C and the user equipment D as the user equipments of the same classification, and performs modulation encoding on the downlink data according the modulation encoding mode corresponding to the lowest CQI (7) . As such, it can satisfy the requirement for transmission quality error rate of the lowest CQI. For the same reason, the first base station determines the user equipment B and the user equipment E as the user equipments of the same classification, and performs modulation encoding on the downlink data according to the modulation encoding mode corresponding to the lowest CQI (10) . At this time, the classification of the user equipments is completed.
Here, it should be explained that the user equipments of the same classification are under different second base stations respectively. For example, the user equipment A, the user equipment C, and the user equipment D belong to the same classification, then the user equipment A is under one second base station, and the user equipment C is under another second base station, and of course, the second base station under which the user equipment D is located is different from both the second base station under which the user equipment A is located and the second base station under which the user equipment C is located, thus guaranteeing that the downlink control information received by each of the user equipments under each second base station is different from each other, so as  to avoid different user equipments from resolving resources at the same resource position of the second base station.
Of course, besides classifying the N user equipments according to the above CQI, in the embodiment of the present disclosure, the N user equipments can further be classified according to PMI or RI, i.e., the user equipments having the same or similar PMI can be classified as the same classification, or the user equipments having the same or similar RI can be classified as the same classification, or the user equipments having the same PMI and the same RI can be classified as the same classification. The specific classifying process is basically as the same as the classifying process according to CQI, and thus details are not further described herein.
Of course, in the embodiment of the present disclosure, the user equipments can be classified by combining CQI and RI in the channel state information, i.e., the user equipments having similar CQI and same RI can be classified as the same classification； or the user equipments can be classified by combining CQI and PMI in the channel state information, i.e., the user equipments having similar CQI and similar PMI can be classified as the same classification； or the user equipments can be classified by combining RI and PMI in the channel state information, i.e., the user equipments having similar RI and similar PMI can be classified as the same classification.
In preferable implementations of the embodiment of the present disclosure, the user equipments can be classified by combining CQI, PMI, RI in the channel state information, that is, the user equipments having the same RI, similar PMI and similar CQI can be classified as the same classification.
Here, it should be explained that “similar” represents that a difference value between CQIs of two user equipments is within a preset range, and a difference vale between PMIs of two user equipments is within a preset range.
Second Mode
Data traffic amount of each of the N user equipments is acquired, and the N user equipments are classified according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments. In particular, when acquiring the channel state information of each of the N user equipments, the first base  station will also acquire the data traffic amount corresponding to each of the user equipments, the data traffic amount represents data amount of communication between each of the user equipments and the second base station.
The first base station will initially classify the N user equipments according to the channel state information reported by the N user equipments. Such classifying mode can be the classifying mode as described in Fig. 1, and thus the details are not further described herein.
After the classification based on the channel state information is completed, the first base station will classify according to the traffic data amount corresponding to each of the user equipments.
In particular, a second indication value representative of a channel state is acquired from the channel state information of each of the user equipments, and the user equipments whose difference value of the second indication value is within the second preset range and different value of the traffic data amount is within a third preset range are determined as the same classification.
In other words, the user equipments having similar traffic data amount can be classified as the same classification. Here, no limitation is made to the second preset range and the third preset range. The second preset range and the third preset range can be correspondingly adjusted in different application scenes.
Of course, each of the user equipments which are classified as the same classification is under a different second base station.
After the classification is completed, when distributing the downlink control information, the first base station will transmit the same downlink control information to the user equipments of the same classification. For example, the user equipment A, the user equipment C, and the user equipment D belong to the user equipments of the same classification. At this time, the first base station distributes the same downlink control information to the user equipment A, the user equipment C, and the user equipment D. Such downlink control information can be distributed to a plurality of different user equipments, which avoids the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the  first base station has to distribute different downlink control information to each of the N user equipments under the first base station, thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
Here, it should be emphasized that the downlink control information acquired by the user equipments of different classifications is different.
The downlink control information can make the user equipments of the same classification to acquire the configuration resource according to the downlink control information. The configuration resource comprises resources such as downlink resource allocation type, time domain resource position, frequency domain resource position, modulation encoding mode, hybrid automatic retransmission request process, uplink data channel transmission scheduling information, and power control information and so on.
Of course, when distributing the same downlink control information to the user equipments, the first base station will also distribute the downlink control information to the second base stations, wherein the downlink control information is used to indicate the position at which the second base station distributes the time domain resource and the frequency domain resource to the user equipment. In this way, it is guaranteed that the second base station is able to determine the position to distribute the time domain resource and the frequency domain resource accurately.
It should be explained that before distributing the downlink control information to the user equipments, the first base station will scramble the downlink control information through a scrambling sequence and transmit the downlink control information scrambled by the same scrambling sequence to the user equipments of the same classification.
After receiving the downlink control information distributed from the first base station, the user equipment descrambles the downlink control information, so that the user equipment can acquire the time domain resource position and the frequency domain resource position indicated in the downlink control information, so that the user equipment can resolve the corresponding resource at the time domain resource position and the frequency domain resource position corresponding to the second base station.
Of course, besides directly distributing the downlink control information to the user equipments, the first base station can also transmit the downlink control information to the second base stations, and then the same downlink control information is distributed to the user equipments of the same classification via the second base stations. That is, the downlink control information is forwarded via the second base station. The final effect to be realized is to distribute the downlink control information to the user equipments.
After distributing the same downlink control information to the user equipments of the same classification, the first base station will further transmit a channel measurement request to the user equipments, or transmit the channel measurement request via the second base stations. As such, the first base station can acquire the channel state information between the use equipments and the second base stations in real time, so that the first base station will classify the user equipments under the second base stations in real time. The specific classifying mode has been described in the above embodiment, and thus the details will not be further described herein.
Further, the first base station will further receive a uplink data request and/or hybrid automatic retransmission request information and/or channel state information uploaded by the user equipments, or receive the uplink data request and/or hybrid automatic retransmission request information and/or channel state information of the user equipments transmitted by the second base station, so that the first base station can monitor the channel state between the second base stations and the user equipments in real time, so as to provide condition for the classification of the user equipments.
In the information processing method provided in the present disclosure, the first base station acquires the channel state information of the N user equipments, classifies the N user equipments according to the channel state information of each of the user equipments, and finally transmits the same downlink control information to the user equipments of the same classification. Such downlink control information can be distributed to a plurality of different user equipments, so as to avoid the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the N user equipments under the first base station,  thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
The technical solution of the present disclosure will be described through the specific application process of the method in the LTE/LTE-A system.
Fig. 3 illustrates a schematic diagram of LTE/LTE-A system in the embodiment of the present disclosure. The LTE/LTE-A system comprises a macro base station A and micro base stations B, C, and D under the macro base station A. There are the user equipments 1 and 2 under the micro base station B, there are the  user equipments  3 and 4 under the micro base station C, and there are the  user equipments  5 and 6 under the micro base station D.
The macro base station A will directly acquire the channel state information between the six user equipments and their respectively corresponding micro base stations, or acquire the channel state information between the six user equipments and their respectively corresponding micro base stations from the channel quality measurement report uploaded by the six user equipments through the micro base stations B, C, and D. Here, the channel station information comprises RI/PMI/CQI and so on.
After acquiring the RI/PMI/CQI of each of the user equipments, the macro base station A will classify the six user equipments. The specific classifying mode has been described in detail in the first mode, and thus the details will not be further described herein. The final classification result is that the  user equipments  1, 3 and 5 belong to a same classification, and the  user equipments  2, 4, and 6 belong to a same classification. At this time, for the  user equipments  1, 3, and 5, the macro base station A will distribute a first DCI. The first DCI will be carried in the downlink control channel. Of course, the DCI comprises information such as resource allocation information, time domain resource information, frequency domain resource position, adjustment encoding mode, transmission mode, and so on. DCI distributed to the user equipments is scrambled by a particular scrambling mode. After receiving the first DCI, the user equipment will descramble according to the scrambling sequence used by the scrambling mode, so as to obtain a final first DCI.
For the same reason, a second DCI is distributed for the  user equipments  2, 4, and 6. The second DCI is different from the first DCI. Of course, the information such as the  resource allocation and so on carried by the second DCI is also different, so as to guarantee that DCIs received by the user equipments under the micro base station B are different, DCIs received by the user equipments under the micro base station C are different, and DCIs received by the user equipments under the micro base station D are different.
When distributing DCI to the user equipment, the macro base station A will distribute the first DCI and the second DCI to the micro base stations B, C, and D. In this way, the micro base stations B, C, and C are able to determine a predefined resource allocation position or a resource allocation position indicated by DCI of the macro base station A, wherein the resource allocation position comprises the time domain resource position and the frequency domain resource position, and finally distributes data information to the user equipments according to the resource allocation information, modulation encoding mode, and transmission mode and so on indicated by DCI.
After receiving the first DCI, the user equipment 1 will resolve the data information configured for the user equipment 1 according to the resource allocation position (including the time domain resource position and frequency domain resource position) , modulation encoding mode, transmission mode and so on indicated by the first DCI. Likewise, after receiving the first DCI, the user equipment 3 will resolve the data information configured for the user equipment 3 according to the resource allocation position, modulation encoding mode, and transmission mode and so on indicated by the first DCI. Of course, the modes in which other user equipments acquire the resource configuration can be completed based on the above modes, and thus the details are not further described herein.
Obviously, in the embodiment of the present disclosure, the first base station classifies the N user equipments according to the channel state information of each of the user equipments, and finally transmits the same downlink control information to the user equipments of the same classification. The user equipments of the same classification use the same predefined descrambling mode to resolve the DCI. As such, a piece of downlink control information can be distributed to a plurality of different user equipments, so as to avoid the problem that the downlink control information resource is limited and the number of the access user equipments under the first base station is limited caused since the first base station has to distribute different downlink control information to each of the N user  equipments under the first base station, thus increasing the number of the access user equipments at the first base station and improving utilization rate of the downlink control information.
Second Embodiment
In the embodiment of the present disclosure, there is provided a system comprising a first base station and M second base stations different from the first base station, the M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the first base station includes the coverage range of the second base stations, M and N being positive integers greater than 1.
The first base station is in particular configured to acquire channel state information of N user equipments, the channel state information represents a state of a channel between the user equipment and a corresponding second base station. The first base station is further configured to classify the N user equipments according to the channel state information of each of the user equipments, and transmit same downlink control information to user equipments of a same classification, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
The second base station is configured to perform data transmission with the user equipment corresponding to the downlink control information at a time domain resource position and a frequency domain resource position configured by the downlink control information.
Further, the first base station is in particular configured to receive channel state information of each of the N user equipments reported by each of the N user equipments or receive channel state information of each of the N user equipments measured by the second base station.
Further, the first base station is in particular configured to transmit the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the  configuration resource in communication with the user equipments of the same classification according to the downlink control information.
Further, the first base station is in particular configured to acquire data traffic amount of each of the N user equipments and classify the N user equipments according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
Further, the first base station is in particular configured to acquire a second indication value representative of the channel state from the channel state information of each of the user equipments, and determine the user equipments whose difference value of the second indication values is within the second preset range and difference value of the data traffic amount is within the third preset range as the same classification.
Third Embodiment
In the embodiment of the present disclosure, there is further provided a base station, M second base stations are included within a coverage range of the base station, N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the base station includes the coverage range of the second base stations, M and N are positive integers greater than 1. The base station comprises: an acquisition module configured to acquire channel state information of N user equipments, wherein the channel state information represents a state of a channel between each of the user equipments and a corresponding second base station； a classification module configured to classify the N user equipments according to the channel state information of each of the user equipments； and an instruction distribution module configured to transmit same downlink control information to user equipments of the same classification, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
Although the preferable embodiments of the present application have been described, those skilled in the art can make additional alternations and amendments to these embodiments once they obtain a basic inventive concept. Therefore, the claims intend to be explained as comprising the preferable embodiments as well as all the alternations and  amendments that fall into the scope of the present disclosure.
Obviously, those skilled in the art can make various alternations and modifications to the present application without departing from the spirit and scope of the present application. As such, if these alternations and modifications of the present application belong to the claims of the present application as well as equivalent technology thereof, then the present application intends to comprise these alternations and modifications.

Claims (20)

  1. An information processing method applicable to a first base station, characterized in that M second base stations are included within a coverage range of the first base station, and N user equipments are distributed within a coverage range of the M second base stations, wherein the coverage range of the first base station includes the coverage range of the second base station, M and N being positive integers greater than 1, the method comprising:
    acquiring channel state information of N user equipments, wherein the channel state information represents state information of a channel between each of the user equipments and a corresponding second base station； and
    transmitting same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station.
  2. The information processing method of claim 1, characterized in that the acquiring channel state information of N user equipments comprises one of:
    receiving channel state information reported by each of the N user equipments； and
    receiving channel state information of each of the user equipments measured by the second base stations.
  3. The information processing method of claim 1, characterized in that the acquiring channel state information of N user equipments comprises:
    acquiring channel quality indicator and/or precoding matrix indicator and/or rank indicator reported by each of the N user equipments, wherein the channel quality indicator, the precoding matrix indicator and the rank indicator represent quality of a channel between the user equipment and a corresponding second base station.
  4. The information processing method of claim 3, characterized in that the N user equipments are classified according to the channel state information of each of the user  equipments, and the classification of the N user equipments comprises:
    acquiring a first indication value representative of channel quality from the channel quality information of each of the user equipments；
    determining user equipments whose difference value of the first indication value is within a first preset range as the same classification； or
    determining user equipments having a same reported precoding matrix indicator as the same classification； or
    determining user equipments having a same reported rank indicator as the same classification.
  5. The information processing method of claim 1, characterized in that the acquiring channel state information reported by N user equipments further comprises: acquiring data traffic amount of each of the N user equipments；
    wherein the N user equipments are classified according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  6. The information processing method of claim 5, characterized in that the classification of the N user equipments comprises:
    acquiring a second indication value representative of a channel state from the channel state information of each of the user equipments； and
    determining user equipments whose difference value of the second indication value is within a second preset range and difference value of the data traffic amount is within a third preset range as the same classification.
  7. The information processing method of claim 1, characterized in that the transmitting same downlink control information to the user equipments classified with the channel state information further comprises:
    transmitting the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  8. The information processing method of any one of claims 1-7, characterized in that the  configuration resource comprises downlink resource allocation type, time domain resource position, frequency domain resource position, modulation encoding mode, hybrid automatic retransmission request process, downlink data channel transmission scheduling information, and power control information.
  9. The information processing method of any one of claims 1-7, characterized in that the transmitting same downlink control information to the user equipments classified with the channel state information further comprises:
    directly transmitting the same downlink control information to the user equipments of the same classification； or
    transmitting the same downlink control information to the user equipments of the same classification via the second base stations.
  10. The information processing method of claim 1, characterized in that the transmitting same downlink control information to the user equipments classified with the channel state information comprises:
    scrambling the downlink control information by using a same scrambling sequence, and transmitting the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
  11. A system, characterized by comprising: a first base station and M second base stations different from the first base station, wherein the M second base stations are included within a coverage range of the first base station, N user equipments are distributed within a coverage range of the M second base stations, and the coverage range of the first base station includes the coverage range of the second base stations, M and N being positive integers greater than 1；
    the first base station is configured to acquire channel state information of the N user equipments, the channel state information representing a state of a channel between each of the user equipments and a corresponding second base station, and transmit same downlink control information to the user equipments classified with the channel state information, so that the user equipments of a same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different second base station；
    the second base station is configured to perform data transmission with the user equipment corresponding to the downlink control information at a time domain resource position and a frequency domain resource position configured by the downlink control information.
  12. The system of claim 11, characterized in that the first base station is configured to receive channel state information of each of the N user equipments reported by each of the user equipments or receive channel state information of each of the user equipments measured by the second base stations.
  13. The system of claim 11, characterized in that the first base station is configured to transmit the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  14. The system of claim 11, characterized in that the first base station is configured to acquire data traffic amount of each of the N user equipments and classify the N user equipments according to the channel state information reported by each of the N user equipments and the data traffic amount of each of the N user equipments.
  15. The system of claim 11, characterized in that the first base station is configured to scramble the downlink control information by using a same scrambling sequence and transmit the downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
  16. A base station, M second base stations included within a coverage range of the first base station, and N user equipments distributed within a coverage range of the M second base stations, wherein the coverage range of the base station includes the coverage range of the second base stations, M and N being positive integers greater than 1, characterized by comprising:
    an acquisition module configured to acquire channel state information of N user equipments, wherein the channel state information represents a state of a channel between each of the N user equipments and a corresponding second base station； and
    an instruction distribution module configured to transmit same downlink control  information to the user equipments classified with the channel state information, so that the user equipments of the same classification acquire configuration resource according to the downlink control information, wherein each of the user equipments of the same classification is under a different base station.
  17. The base station of claim 16, characterized in that the acquisition module acquires channel state information of N user equipments by one of: receiving channel state information reported by each of the N user equipments and receiving channel state information of each of the user equipments measured by the second base station.
  18. The base station of claim 17, characterized in that the acquisition module further acquires data traffic amount of each of the N user equipments；
    wherein the N user equipments are classified according to the channel state information reported by each of the user equipments and the data traffic amount of each of the user equipments.
  19. The base station of claim 16, characterized in that the instruction distribution module transmits same downlink control information to user equipments of the same classification by transmitting the downlink control information to the second base stations corresponding to the user equipments of the same classification, so that the second base stations determine the configuration resource in communication with the user equipments of the same classification according to the downlink control information.
  20. The base station of claim 16, characterized in that the instruction distribution module transmits the same downlink control information to the user equipments of the same classification by scrambling the same downlink control information by using a same scrambling sequence and transmitting the same downlink control information scrambled by the scrambling sequence to the user equipments of the same classification.
PCT/CN2015/075284 2014-08-25 2015-03-27 Information processing method, system and base station WO2016029690A1 (en)

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