WO2017088661A1 - 一种大尺度mimo中的通信方法和装置 - Google Patents

一种大尺度mimo中的通信方法和装置 Download PDF

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Publication number
WO2017088661A1
WO2017088661A1 PCT/CN2016/105170 CN2016105170W WO2017088661A1 WO 2017088661 A1 WO2017088661 A1 WO 2017088661A1 CN 2016105170 W CN2016105170 W CN 2016105170W WO 2017088661 A1 WO2017088661 A1 WO 2017088661A1
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identification signal
downlink
cells
time
cell
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PCT/CN2016/105170
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English (en)
French (fr)
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张晓博
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上海朗帛通信技术有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • 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
    • H04B7/0413—MIMO systems
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to a scheme in which a UE (User Equipment) and a plurality of cells are simultaneously connected in a mobile communication technology field, and particularly relates to a scheme in which one UE and multiple cells in a scenario in which multiple antennas are deployed on a base station side are simultaneously connected. .
  • UE User Equipment
  • the CoMP JT is transparent to the UE, and requires an ideal backhaul link between multiple cells participating in the cooperation.
  • multiple serving cells are deployed on different carriers.
  • the soft handover is only applied to the CDMA (Code Division Multiple Access) system and only occurs when the user performs handover.
  • the UE can only maintain connection with at most two cells at the same time.
  • Massive MIMO As a new cellular antenna architecture, Massive MIMO has recently become a research hotspot.
  • a typical feature of a Massive MIMO system is to obtain a series of gains by increasing the number of antenna array elements to a larger value. For example, the system capacity theoretically increases with the number of antennas; the coherent superposition of the transmit antenna signals reduces the transmit power. and many more.
  • a typical application scenario for Massive MIMO is to increase spectral efficiency by increasing the number of multi-users for space division multiplexing.
  • Massive MIMO One of the challenges faced by Massive MIMO is the transmission of broadcast channel/cell common reference signals. Since the maximum transmission power of a single antenna is low, it is difficult to ensure the reception quality of a UE farther from the base station by transmitting a broadcast channel/cell common reference signal by using a single antenna.
  • the multiple antennas jointly transmitting the broadcast channel/cell common reference signal may result in a coverage dead zone.
  • Massive MIMO Another problem with Massive MIMO is that the UE may be interfered by neighboring base stations (caused by, for example, pilot pollution), that is, the beam generated by multi-antenna beamforming may cause strong interference to UEs of neighboring cells.
  • neighboring base stations caused by, for example, pilot pollution
  • the scheduling of the serving cell and the scheduling of the non-serving cell are performed independently, which may generate strong interference on the UE side.
  • the present application discloses a method in a UE supporting multi-cell connection, which includes the following steps:
  • Step A Receive L downlink signals on L time-frequency resources, respectively, and the L downlink signals are respectively transmitted by L cells.
  • the frequency bands of the L cells that can be used for downlink transmission are all or partially overlapped, and the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the L is a positive integer greater than 1.
  • the downlink frequency bands of the L cells completely coincide.
  • any two of the L time-frequency resources are orthogonal.
  • the downlink transmission between the UE and the L cells adopts an OFDM or F-OFDM scheme, respectively.
  • the time-frequency resource includes a positive integer number of PRBs (Physical Resource Blocks).
  • the time-frequency resource includes a positive integer number of basic scheduling units, the basic scheduling unit has a duration of no more than 1 millisecond in the time domain, and a duration in the frequency domain is not less than 180 kHz.
  • the UE is in an RRC connected state.
  • the UE receives system information only from a first one of the L cells.
  • the system information includes paging information.
  • the essence of the above method is that the UE and the multiple cells keep the connection on the overlapping frequency bands at the same time, on the one hand, the throughput of the UE can be improved, and on the other hand, the inter-cell interference can be avoided. Especially when the traffic between adjacent cells is not balanced, the relatively idle cell can share the traffic for the relatively busy cell. Significantly improve system transmission efficiency.
  • the step A further includes the following steps:
  • Step A0 Receiving K identification signal groups, the K identification signal groups being respectively transmitted by K cells.
  • the L identification signal groups in the K identification signal groups are respectively sent by the L cells, and one of the identification signal groups includes a positive integer identification signal, and the primary transmission of the identification signal occupies a positive integer number.
  • the identification signal comprising one or more of ⁇ Zadoff-Chu sequence, pseudo-random sequence, RS resource, broadcast information ⁇ , the broadcast information includes an index of the identification signal, and the RS resource includes a positive An integer number of RS ports.
  • an RS port refers to an air interface resource occupied by an RS sent by one antenna port.
  • one cell can transmit a plurality of identification signals, and the plurality of identification signals can respectively cover different areas by means of antenna virtualization, thereby avoiding coverage blind spots of broadcast signals. Further, the directionality of a given identification signal may be stronger, the coverage can be expanded, and the interference of broadcast signals between cells can be reduced.
  • the number of identification signals included in at least one of the K identification signal groups is greater than one.
  • the UE assumes that the identification signal is transmitted by a One-Shot, that is, the UE cannot perform joint channel estimation using the received signal that is received multiple times.
  • the number of identification signals included in at least two of the L identification signal groups is different.
  • the positive integer time windows are continuous.
  • the time window is an LTE subframe.
  • any two of the identification signals in the identification signal group are transmitted in different time windows.
  • the time window is an LTE time slot.
  • the time window is a short TTI of less than 1 millisecond.
  • the identification signal in the identification signal group shares at least one of a ⁇ Zadoff-Chu sequence, a pseudo-random sequence, and an RS sequence corresponding to the RS resource ⁇ .
  • different identification sequences in the set of identification signals are transmitted by different antenna port(s).
  • the RS resources included in any two of the identification signal groups are distributed in different time windows or occupy different resource units in the same time window, and the resource units are in the time domain. Occupies a wideband symbol and occupies one subcarrier in the frequency domain.
  • the resource unit is an LTE RE (Resource Element).
  • the subcarrier has a bandwidth greater than 15 kHz.
  • the wideband symbol is one of ⁇ OFDM symbol, SC-FDMA symbol, F-OFDM symbol ⁇ .
  • the RE occupied by the RS port in the LTE subframe is an RE occupied by a CSI-RS port in an LTE subframe.
  • the RE occupied by the RS resource in the LTE subframe is an RE occupied by the CSI-RS resource in the LTE subframe.
  • the step A further includes the following steps:
  • Step A1 Receive L downlink information, where the L downlink information respectively indicate L time-frequency resources.
  • the L downlink information is sent by the first cell, and the first cell is a primary serving cell of the UE. That is, the UE receives only system information or paging information of the first cell on the carrier where the first cell is located.
  • the L downlink information is indicated by high layer signaling.
  • the L time-frequency resources can be pre-configured to reduce interference between cells.
  • Massive MIMO is not sensitive to frequency scheduling, the above pre-configuration does not significantly reduce spectral efficiency.
  • the first cell is one of the L cells.
  • the L downlink information is respectively sent by the L cells.
  • the L downlink information is respectively lower by the L downlink signals. Indicated by the line control signaling.
  • the step A further includes the following steps:
  • the K identification signal subsets are respectively a subset of the K identification signal groups, and the identification signal subset includes a positive integer identification signal.
  • the L channel qualities corresponding to the L cells are the highest L of the K channel qualities.
  • the essence of the above aspect is that the UE can select the serving cell(s) according to the reception quality of the broadcast signal transmitted by the direction.
  • the step A further includes the following steps:
  • Step A3. Send L-1 uplink information.
  • the L-1 uplink information respectively indicates that the L-1 cells of the first cell are removed, the first cell is a primary serving cell of the UE, and the uplink information includes a ⁇ cell index, At least the former of the index of the target identification signal, the target identification signal is one of the identification signal groups transmitted by the corresponding cell.
  • the target identification signal is an identification signal with the best channel quality in the corresponding identification signal group.
  • the cell index is a PCI (Physical Cell ID) of a cell.
  • the downlink control signaling is physical layer signaling.
  • the downlink control signaling is scheduling signaling of the corresponding downlink data.
  • the channel quality comprises at least one of ⁇ first parameter, second parameter ⁇
  • the first parameter is received power on all RS ports in the corresponding identification signal subgroup
  • the second parameter is the quotient of the first parameter divided by the third parameter
  • the third parameter is the linear average of the received power over the plurality of wideband symbols of the corresponding cell.
  • the plurality of wideband symbols are selected by the UE.
  • the wideband symbol is an OFDM symbol within a system bandwidth of a corresponding cell.
  • the wideband symbol is an SC-FDMA symbol within a system bandwidth of a corresponding cell.
  • the wideband symbol is an F-OFDM symbol within a system bandwidth of a corresponding cell.
  • the identification signals in the identification signal group are transmitted by different one or more antenna ports, and the antenna ports are formed by a technique in which a plurality of physical antennas are virtualized by an antenna.
  • the present application discloses a method in a base station supporting multi-cell connection, which includes the following steps:
  • step A0 transmitting R identification signal groups, the R identification signal groups being respectively transmitted by the R cells
  • R downlink signals are respectively transmitted on R time-frequency resources.
  • one of the identification signal groups includes a positive integer identification signal, and one transmission of the identification signal occupies a positive integer time window, and the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo-random sequence, an RS resource, and a broadcast information.
  • the broadcast information includes the knowledge
  • the index of the other signal, the RS resource includes a positive integer number of RS ports.
  • the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the R downlink signals are respectively sent by R cells. If the R is greater than 1, the frequency bands of the R cells that can be used for downlink transmission are all or partially coincident, and the R cells are maintained by the base station.
  • any two of the R time-frequency resources are orthogonal.
  • the R is 3.
  • the step A further includes the following steps:
  • Step A4 Receiving backhaul information indicating at least the former of ⁇ R time-frequency resources, R identification signals ⁇ , the R being a positive integer.
  • the R identification signals belong to the R identification signal groups respectively.
  • the R serving cells of the R downlink signals that are not included in the base station of the R downlink signals are not included in the R cells maintained by the base station.
  • the generation parameters of the scrambling code sequence used for the given signal include the identity of the target recipient
  • the generation parameters of the RS sequence of the DMRS (Demodulation Reference Signal) used for the given signal include the identity of the target recipient.
  • the cell corresponding to the positive integer time-frequency resource is maintained by a base station, and the target receiver of the back-transmission information is a maintenance base station of the cell corresponding to the time-frequency resource indicated by the back-transmission information.
  • the backhaul information includes an index of a positive integer identification signal, each cable The index identifies an identification signal.
  • the backhaul information is transmitted through the X2 interface.
  • the backhaul information is transmitted over a directly connected fiber.
  • the step A further includes the following steps:
  • Step A1 Send L downlink information, where the L downlink information respectively indicate L time-frequency resources and the L downlink information is sent by the first cell
  • the first cell is a cell other than the L cells.
  • the L-1 uplink information respectively indicates that the L-1 of the first cell is removed from the L cells.
  • a cell the first cell is a primary serving cell of the sender of the L-1 uplink information
  • the uplink information includes at least a former one of a ⁇ cell index, an index of a target identification signal, and the target identification signal is a corresponding cell.
  • the downlink signal includes ⁇ downlink data, downlink control signaling ⁇ , and the downlink control signaling includes scheduling information of the downlink data except the time-frequency resource.
  • a subset of the identification signals is used to determine a channel quality
  • the identification signal subsets are respectively a subset of the identification signal groups
  • the identification signal subset includes a positive integer number Identify the signal.
  • the channel quality includes at least one of ⁇ first parameter, second parameter ⁇ , the first parameter is a linear average of received power on all RS ports in the corresponding identification signal subset, and the second parameter is a first parameter Divided by the quotient of the third parameter, the third parameter is a linear average of the received power over a plurality of wideband symbols of the corresponding cell.
  • the present application discloses a user equipment supporting multi-cell connection, which includes the following modules:
  • a first module configured to receive K identification signal groups, where the K identification signal groups are respectively sent by K cells;
  • the second module is configured to separately receive L downlink signals on L time-frequency resources, where the L downlink signals are respectively sent by L cells.
  • the frequency bands of the L cells that can be used for downlink transmission are all or partially overlapped, and the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the L is a positive integer greater than 1.
  • the L identification signal groups in the K identification signal groups are respectively sent by the L cells, and one of the identification signal groups includes a positive integer identification signal, and one transmission of the identification signal occupies a positive integer time window.
  • the identification signal includes one or more of ⁇ Zadoff-Chu sequence, pseudo-random sequence, RS resource, broadcast information ⁇ , and the broadcast information includes an index of the identification signal,
  • the RS resource includes a positive integer number of RS ports.
  • the foregoing user equipment is characterized in that the first module is further used for at least one of the following:
  • L downlink information where the L downlink information respectively indicate L time-frequency resources
  • the L-1 uplink information respectively indicates that the L-1 cells of the first cell are removed, the first cell is a primary serving cell of the UE, and the uplink information includes a ⁇ cell index, At least the former of the index of the target identification signal, the target identification signal is one of the identification signal groups transmitted by the corresponding cell.
  • the present application discloses a base station device supporting multi-cell connection, which includes the following modules:
  • a first module configured to send R identification signal groups, where the R identification signal groups are respectively sent by the R cells;
  • the second module is configured to separately send R downlink signals on R time-frequency resources.
  • one of the identification signal groups includes a positive integer identification signal, and one transmission of the identification signal occupies a positive integer time window, and the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo-random sequence, an RS resource, and a broadcast information.
  • the broadcast information includes an index of the identification signal
  • the RS resource includes a positive integer number of RS ports.
  • the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the R downlink signals are respectively sent by R cells. If the R is greater than 1, the frequency bands of the R cells that can be used for downlink transmission are all or partially coincident, and the R cells are maintained by the base station.
  • the foregoing base station device is characterized in that the first module is further configured to receive return information, where the backhaul information indicates at least a former one of ⁇ R time-frequency resources, R identification signals ⁇ , R is a positive integer.
  • the R identification signals belong to the R identification signal groups respectively.
  • the foregoing base station device is characterized in that the first module is further used for at least one of the following:
  • the L time-frequency resources can be used to transmit L downlink signals, respectively, and the L downlink signals are respectively sent by L cells, and the frequency bands of the L cells that can be used for downlink transmission are all or partially overlapped.
  • L is a positive integer greater than one.
  • the R time-frequency resources are R of the L time-frequency resources, the R downlink signals are R of the L downlink signals, and the R cells are in the L cells.
  • the backhaul information indicates at least the former of ⁇ a positive integer time-frequency resource, a positive integer identification signal ⁇ , and the Q back-transmission information indicates a total of L-R time-frequency resources.
  • the L time-frequency resources are composed of the R time-frequency resources and the L-R time-frequency resources.
  • the cells corresponding to the positive integer time-frequency resources are respectively the transmitting cells of the positive integer identification signals.
  • the L-1 uplink information respectively indicates that the L-1 cells of the first cell are removed, and the first cell is the uplink information of the primary serving cell of the sender of the L-1 uplink information. At least the former of the ⁇ cell index, index of the target identification signal ⁇ , the target identification signal is one of the identification signal groups transmitted by the corresponding cell.
  • the time-frequency resources occupied by the downlink data can be configured by higher layer signaling, which reduces the overhead of the physical layer signaling and improves the transmission efficiency.
  • FIG. 1 shows a flow chart of a UE and a plurality of cells staying connected according to an embodiment of the present application
  • FIG. 2 is a schematic diagram showing time resources and frequency resources occupied by an identification signal according to an embodiment of the present application
  • FIG. 3 is a schematic diagram showing time resources and frequency resources occupied by two identification signals according to an embodiment of the present application
  • FIG. 4 shows a flow chart of a UE selecting a serving cell according to a subset of identification signals according to an embodiment of the present application
  • FIG. 5 is a schematic diagram showing frequency bands occupied by L time-frequency resources according to an embodiment of the present application.
  • FIG. 6 is a flowchart showing configuration information of a first cell transmitting a neighboring cell according to an embodiment of the present application
  • FIG. 7 is a schematic diagram showing REs occupied by one RS port in one PRB pair according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram showing REs occupied by multiple RS ports in one PRB pair according to an embodiment of the present application.
  • FIG. 10 is a block diagram showing the structure of a processing device for use in a UE according to an embodiment of the present application.
  • Figure 11 shows a block diagram of a structure for a processing device in a base station in accordance with one embodiment of the present application.
  • Embodiment 1 illustrates a flow chart in which a UE and a plurality of cells remain connected, as shown in FIG.
  • the N1 cell is the primary serving cell of UE U4.
  • the N1 cell, the N2 cell, and the N3 cell are respectively maintained by three base stations.
  • the steps in block F1, block F2, block F3 and block F4 are optional steps, respectively.
  • the first identification signal group is transmitted in step S11, the first uplink information is received in step S12, the first backhaul information is transmitted in step S13, and two downlink information is transmitted in step S14, in step S15.
  • the first downlink signal is transmitted on the first time-frequency resource, and the first HARQ_ACK is received in step S16.
  • the second identification signal group is transmitted in step S21
  • the first backhaul information is received in step S22
  • the second downlink signal is transmitted on the second time-frequency resource in step S23
  • the second HARQ_ACK is received in step S24.
  • a third identification signal group is transmitted in step S31.
  • step S41 three identification signal groups - ⁇ first identification signal group, second identification signal group, third identification signal group ⁇ are received in step S41, first uplink information is transmitted in step S42, and reception 2 is received in step S43.
  • the downlink information is received in step S44, and the first downlink signal and the second downlink signal are received, and the first HARQ_ACK and the second HARQ_ACK are transmitted in step S45.
  • a certain integer identification signal is included in one of the identification signal groups, and a single transmission of the identification signal occupies a positive integer time window, and the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo random sequence, and an RS resource.
  • the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo random sequence, and an RS resource.
  • One or more of broadcast information including an index of the identification signal, the RS resource including a positive integer number of RS ports.
  • the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ .
  • the bands of ⁇ N1, N2, N3 ⁇ that can be used for downlink transmission are all or partially coincident.
  • the first HARQ_ACK indicates whether downlink data in the first wireless signal is correctly decoded
  • the second HARQ_ACK indicates whether downlink data in the second wireless signal is correctly decoded.
  • the two downlink information respectively indicate a first time-frequency resource and a second time-frequency resource.
  • the first uplink information indicates at least the former of ⁇ the cell index of the N2 cell, the index of the target identification signal ⁇ .
  • First return information At least the former of ⁇ information information of the second time-frequency resource, index of the target identification signal ⁇ is included.
  • the target identification signal is an identification signal in the second identification signal group.
  • N1 is the primary serving cell of U4, and N2 and N3 are not the primary serving cell of U4.
  • the identification signal includes at least RS resources in ⁇ Zadoff-Chu sequence, pseudo-random sequence, RS resource, broadcast information ⁇ .
  • the downlink signal includes ⁇ downlink data, downlink control signaling ⁇ , the downlink control signaling is scheduling signaling of the downlink data, and the downlink signaling includes a corresponding downlink.
  • the scheduling information includes at least one of ⁇ MCS (Modulation and Coding Status), RV (Redundancy Version), and NDI (New Data Indicator).
  • the above channel quality includes at least one of ⁇ first parameter, second parameter ⁇ , the first parameter is a linear average of received power on all RS ports in the corresponding identification signal subgroup The value (in watts), the second parameter is the quotient of the first parameter divided by the third parameter, and the third parameter is the linear average (in watts) of the received power over multiple wideband symbols.
  • the above specific standard is S criterion in LTE, in which RSRP and RSRQ are replaced by the above-described first parameter and second parameter, respectively.
  • Embodiment 2 illustrates a schematic diagram of a time resource and a frequency resource occupied by an identification signal, as shown in FIG. In Fig. 2, the square marked by the diagonal line is a time-frequency block occupied by one transmission of the identification signal.
  • the identification signal is periodically transmitted, the transmission period is T (the unit is milliseconds), and the T is a positive rational number.
  • one transmission of the identification signal occupies W time windows in the time domain, and the W is a positive integer greater than one.
  • the primary transmission of the identification signal occupies a part of resource units in the time-frequency block identified by the oblique line in FIG. 2, the resource unit including one carrier in the frequency domain, including in the time domain A broadband symbol.
  • the identification signal includes ⁇ feature sequence, RS resource, broadcast information ⁇
  • the feature sequence includes at least one of ⁇ Zadoff-Chu sequence, pseudo-random sequence ⁇
  • the frequency band occupied by the feature sequence is a part of the system bandwidth
  • the broadcast information includes at least one of ⁇ system frame number, index of the identification signal ⁇
  • the RS resource includes a positive integer number of RS ports
  • resources occupied by the RS port Units are distributed across all time-frequency sub-blocks within the system bandwidth.
  • the time-frequency sub-block includes a plurality of sub-carriers in the frequency domain, and the time-frequency block identified by the slanted lines in FIG. 2 is composed of a positive integer number of time-frequency sub-blocks in the frequency domain.
  • Embodiment 3 exemplifies a schematic diagram of time resources and frequency resources occupied by two identification signals, as shown in FIG.
  • the square marked by the oblique line is a time-frequency block occupied by one transmission of the identification signal, that is, the identification signal I
  • the square marked by the back oblique line is occupied by one transmission of the identification signal, that is, the identification signal II. Time-frequency block.
  • the identification signal I and the identification signal II occupy different time(s) respectively.
  • the cells N5, N6, and N7 transmit the fifth identification signal group, the sixth identification signal group, and the seventh identification signal group in steps S51, S61, and S71, respectively.
  • the UE U8 receives the fifth identification signal group, the sixth identification signal group and the seventh identification signal group in step S81; and the sixth identification signal subgroup and the seventh identification signal subgroup according to the fifth identification signal subgroup in step S82. Determining a fifth channel quality, a sixth channel quality, and a seventh channel quality respectively; selecting a suitable cell from the N5, N6, and N7 as the serving cell according to the fifth channel quality, the sixth channel quality, and the seventh channel quality in step S83. .
  • the first parameter is:
  • a received signal on the mth resource unit occupied by the RS resource in the p-th identification signal in the identification signal sub-group and P and M are respectively the number of identification signals in the identification signal sub-group and the RS resource The number of resource units.
  • the third parameter is:
  • Embodiment 5 exemplifies a frequency band occupied by L time-frequency resources in the present application, as shown in FIG.
  • the frequency bands corresponding to the L time-frequency resources in the present application are respectively the frequency bands corresponding to the time-frequency resources ⁇ #1, #2, . . . , #L ⁇ in FIG. 5. That is, the frequency bands corresponding to the L time-frequency resources are not covered by each other.
  • the L time-frequency resources in the present application are respectively frequency bands within one system bandwidth.
  • Embodiment 6 exemplifies a flowchart in which the first cell transmits configuration information of a neighboring cell, as shown in FIG.
  • the first cell is the primary serving cell of UE U9.
  • the first cell transmits high layer signaling in step S101, and the UE U9 receives high layer signaling in step S901.
  • the high layer signaling includes configuration information of K cells, and the configuration information includes at least one of the following:
  • the high layer signaling is RRC (Radio Resource Control) signaling.
  • Embodiment 7 illustrates a schematic diagram of the RE occupied by one RS port in one PRB pair in the present application, as shown in FIG.
  • the time window in the present application is an LTE subframe
  • the resource unit in the present application is an RE.
  • the RE occupied by one of the RS ports in one PRB pair in the present application is an RE occupied by a CSI-RS port.
  • the small squares indicated by the slashes in FIG. 7 correspond to the REs occupied by one RS port in the present application in one PRB pair.
  • any two identification signals in one identification signal group in the present application do not appear in the same LTE subframe.
  • Embodiment 8 illustrates a schematic diagram of REs occupied by a plurality of RS ports within one PRB pair, as shown in FIG.
  • the time window in the present application is an LTE subframe
  • the resource unit in the present application is an RE.
  • the RE occupied by one of the RS ports in one PRB pair in the present application is an RE occupied by a CSI-RS port.
  • the small square identified by the number x in FIG. 8 is the RE occupied by the RS port #x in one PRB pair, wherein the two RS ports share 2 REs by way of OCC (Orthogonal Covering Code).
  • x is ⁇ 0,1,2,3,4,5,6,7 ⁇ .
  • At least two identification signals in one identification signal group in the present application appear in the same LTE subframe.
  • all the identification signals in one identification signal group in the present application appear in the same LTE subframe.
  • Embodiment 9 exemplifies a schematic diagram of the identification signal and the corresponding beam, as shown in FIG.
  • one identification signal group in the present application includes four identification signals, and the beams corresponding to the transmission antenna ports of the four identification signals are respectively as shown in (a), (b), and (c) of FIG. , (d).
  • the four identification signals can compensate for the blind zone formed by the single identification signal - the UE in the virtual coverage area as shown in (e) can discover the existence of the cell by detecting 4 identification signals.
  • an identification signal is transmitted by one antenna port - corresponding to one RS port.
  • an identification signal is transmitted by a plurality of antenna ports - corresponding to a plurality of RS ports.
  • the advantage of this sub-embodiment is that the antenna port is more directional and more robust.
  • Embodiment 10 is a structural block diagram of a processing device for use in a UE, as shown in FIG.
  • the UE device 200 is composed of a first module 201 and a second module 202.
  • the first module 201 is configured to receive K identification signal groups, and the K identification signal groups are respectively sent by K cells.
  • the second module 202 is configured to separately receive L downlink signals on L time-frequency resources, where the L downlink signals are respectively sent by L cells.
  • the system bandwidths of the L cells that can be used for downlink transmission are coincident, and the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the L is greater than 1.
  • the L identification signal groups in the K identification signal groups are respectively sent by the L cells, and one of the identification signal groups includes a positive integer identification signal, and one transmission of the identification signal occupies a positive integer time window.
  • the identification signal includes an RS resource
  • the broadcast information includes an index of the identification signal
  • the RS resource includes a positive integer number of RS ports.
  • the first module 201 is further configured to receive L downlink information, where the L downlink information respectively indicate L time-frequency resources.
  • the first module 201 is further configured to send L-1 uplink information.
  • the L-1 uplink information respectively indicates that the L-1 cells of the L cells are removed from the first cell.
  • the cell, the first cell is the primary serving cell of the UE, and the uplink information includes a cell index.
  • the second module 202 is further configured to send L HARQ_ACKs, where the L HARQ_ACKs are used to indicate whether downlink data in the L downlink signals is correctly decoded.
  • the target recipients of the L HARQ_ACKs are the L cells, respectively.
  • Embodiment 11 is a structural block diagram of a processing device used in a base station, as shown in FIG.
  • the base station apparatus 300 is composed of a first module 301 and a second module 302.
  • the first module 301 is configured to send R identification signal groups, and the R identification signal groups are respectively sent by the R cells.
  • the second module 302 is configured to separately send R downlink signals on the R time-frequency resources.
  • a certain integer identification signal is included in one of the identification signal groups, and one transmission of the identification signal occupies a positive integer time window, and the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo-random sequence, and an RS resource.
  • the identification signal includes a ⁇ Zadoff-Chu sequence, a pseudo-random sequence, and an RS resource.
  • At least an RS resource in the broadcast information the broadcast information including an index of the identification signal, the RS resource including a positive integer number of RS ports.
  • the downlink signal includes at least one of ⁇ downlink data, downlink control signaling ⁇ , and the R downlink signals are respectively sent by R cells. If the R is greater than 1, the system bandwidths of the R cells that can be used for downlink transmission are coincident, and the R cells are maintained by the base station.
  • the first module 301 is further configured to receive return information, where the backhaul information indicates at least a former one of ⁇ R time-frequency resources, R identification signals ⁇ , where R is a positive integer .
  • the R identification signals belong to the R identification signal groups respectively.
  • the first module 301 is further configured to:
  • the L time-frequency resources can be used to transmit L downlink signals, respectively, and the L downlink signals are respectively sent by L cells, and the frequency bands of the L cells that can be used for downlink transmission are coincident.
  • the L is a positive integer greater than one.
  • the R time-frequency resources are R of the L time-frequency resources, the R downlink signals are R of the L downlink signals, and the R cells are in the L cells.
  • the Q backhaul information indicates a total of LR time-frequency resources:
  • the L time-frequency resources are composed of the R time-frequency resources and the LR time-frequency resources.
  • the y q y q-th time-frequency resources corresponding to each cell is the y th transmitting cell identification signal q.
  • the L-1 uplink information respectively indicates that the L-1 cells of the first cell are removed, and the first cell is the uplink information of the primary serving cell of the sender of the L-1 uplink information. At least the former of the ⁇ cell index, index of the target identification signal ⁇ , the target identification signal is one of the identification signal groups transmitted by the corresponding cell.
  • the R is 1.
  • the R is 2.
  • the L time-frequency resources are orthogonal to each other.
  • each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module.
  • the application is not limited to any specific combination of software and hardware.
  • the UE in the present application includes, but is not limited to, a wireless communication device such as a mobile phone, a tablet computer, a notebook, and an internet card.
  • the base station or system equipment in this application includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

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Abstract

本申请提出了一种大尺度MIMO中的通信方法和装置。在一个实施例中，UE在L个时频资源上分别接收L个下行信号，所述L个下行信号分别由L个小区发送。其中，所述L个小区的能用于下行传输的频带全部或者部分重合，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数，所述L个时频资源是两两正交的。通过使用本申请中提供的技术方案，避免了多天线基站所发送的广播信号的覆盖问题，减轻小区间干扰，均衡小区间的业务量，降低了物理层信令的开销，提高了传输效率。

Description

一种大尺度MIMO中的通信方法和装置
交叉引用
本申请引用于2015年11月27日递交的名称为“一种大尺度MIMO中的通信方法和装置”的第201510852656.0号中国专利申请，其通过引用被全部并入本申请。
技术领域
本申请涉及移动通信技术领域中一个UE(User Equipment，用户设备)和多个小区同时保持连接的方案，尤其涉及基站侧部署了多天线的场景中的一个UE和多个小区同时保持连接的方案。
背景技术
传统的第三代合作伙伴项目(3GPP–3rd Generation Partner Project)蜂窝网系统中，UE在一个给定载波上通常只能和一个服务小区保持连接。UE和多个服务小区保持连接的场景包括：
-.CoMP(Coordinated Multiple Point，协同多点)JT(Joint Transmission，联合传输)
-.载波聚合(Carrier Aggregation)
-.双连接(Dual Connectivity)
-.软切换(Soft Handover)
其中，CoMP JT对于UE而言是透明的，且要求参与协作的多个小区之间具备理想的回传链路。载波聚合和双连接中，多个服务小区分别是部署在不同的载波上。软切换仅应用于CDMA(Code Division Multiple Access，码分多址)系统且仅在用户进行切换时发生，此外，软切换中UE最多只能和两个小区同时保持连接。
作为一种新的蜂窝网天线架构，Massive MIMO近来成为一个研究热点。Massive MIMO系统的典型特点是通过增加天线阵列单元的数量到较大的值从而获得一系列增益，例如，系统容量理论上随着天线数量的增加而持续增加；发射天线信号的相干叠加降低发射功率等等。Massive MIMO的典型应用场景是通过增加空分复用的多用户数量提高频谱效率。
Massive MIMO所面临的一个挑战是广播信道/小区公共参考信号的发送。由于单根天线的最大发送功率较低，采用单根天线发送广播信道/小区公共参考信号很难保证距离基站较远的UE的接收质量。而多根天线联合发送广播信道/小区公共参考信号可能导致覆盖盲区。
Massive MIMO的另一个问题是UE可能受到相邻基站的干扰(由例如导频污染所导致)，即多天线通过波束赋型所生成的波束可能对相邻小区的UE造成较强的干扰。
本申请针对上述问题公开了一种解决方案。需要说明的是，在不冲突的情况下，本申请的UE(User Equipment，用户设备)中的实施例和实施例中的特征可以应用到基站中，反之亦然。进一步的，在不冲突的情况下，本申请的实施例和实施例中的特征可以任意相互组合。
发明内容
传统的宽带系统中，UE很难在相同的频带上和多个小区同时保持连接，原因包括：
-.UE和非服务小区之间的路径损耗较大，非服务小区能给UE提供的服务质量相对较低；
-.服务小区和非服务小区之间的回传链路是非理想时，服务小区的调度和非服务小区的调度是独立进行的，进而可能在UE侧产生较强的干扰。
发明人通过研究发现，当基站侧配置的天线数量较多时，基站通过波束赋型有可能对相邻小区的UE提供较好的服务质量。发明人通过进一步研究发现，由于Massive MIMO对频率选择性调度的依赖性较低，多个小区之间的资 源调度能够通过回传链路协调–即使回传链路是非理想的。上述发现为UE在相同的载波和多个小区保持连接提供了可能。
根据上述分析，本申请公开了一种支持多小区连接的UE中的方法，其中，包括如下步骤：
-步骤A.在L个时频资源上分别接收L个下行信号，所述L个下行信号分别由L个小区发送。
其中，所述L个小区的能用于下行传输的频带全部或者部分重合，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数。
作为一个实施例，所述正交是指不重叠。
作为一个实施例，所述L个小区的下行频带完全重合。
作为一个实施例，所述L个时频资源中的任意两个时频资源都是正交的。
作为一个实施例，所述UE和所述L个小区之间的下行传输分别采用OFDM或者F-OFDM方式。
作为一个实施例，所述时频资源包括正整数个PRB(Physical Resource Block，物理资源块)Pair(对)。
作为一个实施例，所述L个时频资源分别是一个载波的系统带宽内的L个频带，所述L个频带中的任意两个频带是不重叠的。
作为一个实施例，所述时频资源包括正整数个基本调度单位，所述基本调度单位在时域上的持续时间不超过1毫秒，在频域上的持续时间不小于180kHz。
作为一个实施例，所述UE处于RRC连接状态。
作为一个实施例，所述UE仅从所述L个小区中的第一小区中接收系统信息。作为一个子实施例，所述系统信息包括寻呼信息。
上述方法的本质是UE和多个小区在重叠的频带上同时保持连接，一方面能提高UE的吞吐量，另一方面能避免小区间干扰。尤其是相邻小区之间的业务量不均衡的时候，相对空闲的小区能够为相对繁忙的小区分担业务量，进 而显著提高系统传输效率。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A0.接收K个识别信号组，所述K个识别信号组分别由K个小区发送。
其中，所述K个识别信号组中的L个识别信号组分别由所述L个小区发送，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。
本申请中，一个RS端口是指由一个天线端口所发送的RS所占用的空口资源。
上述方面的本质是，一个小区能够发送多个识别信号，多个识别信号分别能够通过天线虚拟化的方法覆盖不同的区域，避免广播信号的覆盖盲区。进一步的，给定识别信号的方向性可能更强，能够扩大覆盖范围，并降低小区间的广播信号的干扰。
作为一个实施例，所述K个识别信号组中至少有一个识别信号组所包括的识别信号数大于1。
作为一个实施例，所述识别信号是周期性发送的。
作为一个实施例，所述UE假设所述识别信号是单次(One-Shot)发送的，即所述UE不能利用多次接收的识别信号执行联合信道估计。
作为一个实施例，所述L个识别信号组中至少由2个识别信号组中所包括的识别信号的数量是不同的。
作为一个实施例，所述正整数个时间窗是连续的。
作为一个实施例，所述时间窗是LTE子帧。
作为一个实施例，所述识别信号组中的任意两个识别信号在不同的时间窗中发送。
作为一个实施例，所述时间窗是LTE时隙。
作为一个实施例，所述时间窗是小于1毫秒的短TTI。
作为一个实施例，所述识别信号组中的识别信号共享{Zadoff-Chu序列，伪随机序列，RS资源对应的RS序列}中的至少之一。
作为一个实施例，所述识别信号组中的不同的识别序列是由不同的(一个或者多个)天线端口发送的。
作为一个实施例，所述识别信号组中的任意两个识别信号所包括的RS资源分布在不同的时间窗中，或者占用相同的时间窗中的不同的资源单位，所述资源单位在时域占用一个宽带符号，在频域占用一个子载波。作为一个子实施例，所述资源单位是LTE RE(Resource Element，资源粒子)。作为一个子实施例，所述子载波的带宽大于15kHz。作为一个子实施例，所述宽带符号是{OFDM符号，SC-FDMA符号，F-OFDM符号}中的一种。
作为一个实施例，所述RS端口在LTE子帧内所占用的RE是一个CSI-RS端口在LTE子帧内所占用的RE。
作为一个实施例，所述RS资源在LTE子帧内所占用的RE是一个CSI-RS资源在LTE子帧内所占用的RE。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A1.接收L个下行信息，所述L个下行信息分别指示L个时频资源。
作为一个实施例，所述L个下行信息由第一小区发送，第一小区是所述UE的主服务小区。即所述UE在第一小区所处的载波上仅接收第一小区的系统信息或者寻呼信息。作为本实施例的一个子实施例，所述L个下行信息由高层信令指示。
上述实施例的本质是：所述L个时频资源能够被预先配置好，进而降低小区间的干扰。考虑到Massive MIMO对频率调度并不敏感，上述预先配置并不会显著降低频谱效率。
作为一个实施例，第一小区是所述L个小区中的一个。
作为一个实施例，所述L个下行信息分别由所述L个小区发送。作为本实施例的一个子实施例，所述L个下行信息分别由所述L个下行信号中的下 行控制信令所指示。
具体的根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A2.根据K个识别信号子组分别确定K个信道质量。
其中，所述K个识别信号子组分别是所述K个识别信号组的子集，所述识别信号子组包括正整数个识别信号。
作为一个实施例，所述L个小区所对应的L个信道质量是所述K个信道质量中最高的L个。
上述方面的本质是UE能够根据定向发送的广播信号的接收质量选择(一个或者多个)服务小区。
作为一个实施例，所述识别信号子组仅包括1个识别信号。
作为一个实施例，所述识别信号子组是由相应识别信号组中第一参数最大的正整数个识别信号组成。即：给定识别信号子组中的任意识别信号的第一参数大于参考识别信号的第一参数，所述参考识别信号是相应识别信号组中的所述给定识别信号子组之外的任意一个识别信号。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A3.发送L-1个上行信息。
其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述UE的主服务小区，所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
作为一个实施例，所述L个上行信息的接收者是第一小区。
作为一个实施例，所述目标识别信号是相应识别信号组中的信道质量最好的识别信号。
作为一个实施例，所述小区索引是小区的PCI(Physical Cell ID，物理小区标识)。
具体的，根据本申请的一个方面，其中所述下行信号包括{下行数据，下 行控制信令}，所述下行控制信令包括除了所述时频资源之外的所述下行数据的调度信息。
作为一个实施例，所述下行控制信令是物理层信令。
作为一个实施例，所述下行控制信令是相应下行数据的调度信令。
具体的，根据本申请的一个方面，其中所述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值，第二参数是第一参数除以第三参数的商，第三参数是在相应小区的多个宽带符号上的接收功率的线性平均值。
上述第一参数和第二参数分别对应RSRP(Reference Signal Receiving Power，参考信号接收功率)和RSRQ(Reference Signal Receiving Quality，参考信号接收质量)。
作为一个实施例，所述多个宽带符号由所述UE自行选择。
作为一个实施例，所述宽带符号是相应小区的系统带宽内的OFDM符号。
作为一个实施例，所述宽带符号是相应小区的系统带宽内的SC-FDMA符号。
作为一个实施例，所述宽带符号是相应小区的系统带宽内的F-OFDM符号。
作为一个实施例，所述识别信号组中的识别信号由不同的一个或者多个天线端口发送，所述天线端口由多根物理天线通过天线虚拟化的技术形成。
本申请公开了一种支持多小区连接的基站中的方法，其中，包括如下步骤：
-步骤A0.发送R个识别信号组，所述R个识别信号组分别由所述R个小区发送
-步骤A.在R个时频资源上分别发送R个下行信号。
其中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识 别信号的索引，所述RS资源包括正整数个RS端口。所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述R个下行信号分别由R个小区发送。如果所述R大于1，所述R个小区的能用于下行传输的频带全部或者部分重合，所述R个小区由所述基站维护。
作为一个实施例，所述R个时频资源中的任意两个时频资源都是正交的。
作为一个实施例，所述R为1。
作为一个实施例，所述R为3。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A4.接收回传信息，所述回传信息指示{R个时频资源，R个识别信号}中的至少前者，所述R是正整数。
其中，所述R个识别信号分别属于所述R个识别信号组。
作为一个实施例，上述方面中，所述基站维持的R个小区中不包括所述R个下行信号的目标接收者的主服务小区。
作为一个实施例，本申请中的给定信号的目标接收者意味着以下至少之一：
-.给定信号的发送定时是基于目标接收者的同步定时而确定的；
-.给定信号所采用的扰码序列的生成参数包括目标接收者的标识；
-.给定信号所采用的OCC(Orthogonal Covering Code，正交覆盖码)序列的生成参数包括目标接收者的标识；
-.给定信号所采用的DMRS(Demodulation Reference Signal，解调参考信号)的RS序列的生成参数包括目标接收者的标识。
作为一个实施例，所述R个小区的下行频带完全重合。
作为一个实施例，所述正整数个时频资源所对应的小区由一个基站维护，所述回传信息的目标接收者是所述回传信息所指示的时频资源对应小区的维持基站。
作为一个实施例，所述回传信息包括正整数个识别信号的索引，每个索 引标识一个识别信号。
作为一个实施例，所述回传信息通过X2接口传输。
作为一个实施例，所述回传信息通过S1接口传输。
作为一个实施例，所述回传信息通过直接连接的光纤传输。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A1.发送L个下行信息，所述L个下行信息分别指示L个时频资源且所述L个下行信息由第一小区发送
-步骤A5.发送Q个回传信息。
其中，所述L个时频资源能分别被用于传输L个下行信号，所述L个下行信号分别被L个小区发送，所述L个小区的能用于下行传输的频带全部或者部分重合，所述L是大于1的正整数。所述R个时频资源是所述L个时频资源中的R个，所述R个下行信号是所述L个下行信号中的R个，所述R个小区是所述L个小区中的R个。所述回传信息指示{正整数个时频资源，正整数个识别信号}中的至少前者，所述Q个回传信息一共指示L-R个时频资源。所述L个时频资源由所述R个时频资源和所述L-R个时频资源组成。所述正整数个时频资源对应的小区分别是所述正整数个识别信号的发送小区。
作为一个实施例，上述方面中，所述基站维持的R个小区中包括第一小区。
作为一个实施例，第一小区是所述L个下行信息的目标接收者的主服务小区。
作为一个实施例，第一小区是所述L个小区中的一个。
作为一个实施例，第一小区是所述L个小区之外的小区。
作为一个实施例，所述L个下行信息由高层信令指示。
具体的，根据本申请的一个方面，其中所述步骤A还包括如下步骤：
-步骤A3.接收L-1个上行信息。
其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1 个小区，第一小区是所述L-1个上行信息的发送者的主服务小区所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
作为一个实施例，所述目标识别信号是相应识别信号组中的信道质量最好的识别信号。
作为一个实施例，所述L个上行信息的目标接收者是第一小区。
具体的，根据本申请的一个方面，其中所述下行信号包括{下行数据，下行控制信令}，所述下行控制信令包括除了所述时频资源之外的所述下行数据的调度信息。
具体的，根据本申请的一个方面，其中一个识别信号子组用于确定一个信道质量，所述识别信号子组分别是所述识别信号组的子集，所述识别信号子组包括正整数个识别信号。所述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值，第二参数是第一参数除以第三参数的商，第三参数是在相应小区的多个宽带符号上的接收功率的线性平均值。
本申请公开了一种支持多小区连接的用户设备，其中，包括如下模块：
第一模块：用于接收K个识别信号组，所述K个识别信号组分别由K个小区发送；以及
第二模块：用于在L个时频资源上分别接收L个下行信号，所述L个下行信号分别由L个小区发送。
其中，所述L个小区的能用于下行传输的频带全部或者部分重合，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数。所述K个识别信号组中的L个识别信号组分别由所述L个小区发送，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引， 所述RS资源包括正整数个RS端口。
作为一个实施例，上述用户设备的特征在于，第一模块还用于以下至少之一：
-.接收L个下行信息，所述L个下行信息分别指示L个时频资源；
-.发送L-1个上行信息。
其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述UE的主服务小区，所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
作为一个实施例，上述用户设备的特征在于，第一模块还用于根据K个识别信号子组分别确定K个信道质量。其中，所述K个识别信号子组分别是所述K个识别信号组的子集，所述识别信号子组包括正整数个识别信号，所述L个小区所对应的L个信道质量是所述K个信道质量中最高的L个。
本申请公开了一种支持多小区连接的基站设备，其中，包括如下模块：
第一模块：用于发送R个识别信号组，所述R个识别信号组分别由所述R个小区发送；以及
第二模块：用于在R个时频资源上分别发送R个下行信号。
其中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述R个下行信号分别由R个小区发送。如果所述R大于1，所述R个小区的能用于下行传输的频带全部或者部分重合，所述R个小区由所述基站维护。
作为一个实施例，上述基站设备的特征在于，第一模块还用于接收回传信息，所述回传信息指示{R个时频资源，R个识别信号}中的至少前者，所述 R是正整数。其中，所述R个识别信号分别属于所述R个识别信号组。
作为一个实施例，上述基站设备的特征在于，第一模块还用于以下至少之一：
-.发送L个下行信息，所述L个下行信息分别指示L个时频资源且所述L个下行信息由第一小区发送；
-.发送Q个回传信息；
-.接收L-1个上行信息。
其中，所述L个时频资源能分别被用于传输L个下行信号，所述L个下行信号分别被L个小区发送，所述L个小区的能用于下行传输的频带全部或者部分重合，所述L是大于1的正整数。所述R个时频资源是所述L个时频资源中的R个，所述R个下行信号是所述L个下行信号中的R个，所述R个小区是所述L个小区中的R个。所述回传信息指示{正整数个时频资源，正整数个识别信号}中的至少前者，所述Q个回传信息一共指示L-R个时频资源。所述L个时频资源由所述R个时频资源和所述L-R个时频资源组成。所述正整数个时频资源对应的小区分别是所述正整数个识别信号的发送小区。所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述L-1个上行信息的发送者的主服务小区所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
和传统方案相比，本申请具备如下优势：
-.避免了多天线基站所发送的广播信号的覆盖问题；
-.减轻小区间干扰；
-.均衡小区间的业务量，提高全网络的传输效率；
-.下行数据所占用的时频资源能够由高层信令配置，降低了物理层信令的开销，提高了传输效率。
附图说明
通过阅读参照以下附图所作的对非限制性实施例所作的详细描述，本申请的其它特征、目的和优点将会变得更加明显：
图1示出了根据本申请的一个实施例的UE和多个小区保持连接的流程图；
图2示出了根据本申请的一个实施例的一个识别信号所占用的时间资源和频率资源的示意图；
图3示出了根据本申请的一个实施例的两个识别信号所占用的时间资源和频率资源的示意图；
图4示出了根据本申请的一个实施例的UE根据识别信号子组选择服务小区的流程图；
图5示出了根据本申请的一个实施例的L个时频资源所占用的频带的示意图；
图6示出了根据本申请的一个实施例的第一小区发送相邻小区的配置信息的流程图；
图7示出了根据本申请的一个实施例的在一个PRB对内的一个RS端口所占用RE的示意图；
图8示出了根据本申请的一个实施例的在一个PRB对内的多个RS端口所占用RE的示意图；
图9示出了根据本申请的一个实施例的识别信号及相应的波束的示意图；
图10示出了根据本申请的一个实施例的用于UE中的处理装置的结构框图；
图11示出了根据本申请的一个实施例的用于基站中的处理装置的结构框图。
具体实施方式
下文将结合附图对本申请的技术方案作进一步详细说明，需要说明的是，在不冲突的情况下，本申请的实施例和实施例中的特征可以任意相互组合。
实施例1
实施例1示例了UE和多个小区保持连接的流程图，如附图1所示。附图1中，N1小区是UE U4的主服务小区。N1小区，N2小区和N3小区分别由3个基站维护。附图1中，方框F1，方框F2，方框F3和方框F4中的步骤分别是可选步骤。
对于N1，在步骤S11中发送第一识别信号组，在步骤S12中接收第一上行信息，在步骤S13中发送第一回传信息，在步骤S14中发送2个下行信息，在步骤S15中在第一时频资源上发送第一下行信号，在步骤S16中接收第一HARQ_ACK。
对于N2，在步骤S21中发送第二识别信号组，在步骤S22中接收第一回传信息，在步骤S23中在第二时频资源上发送第二下行信号，在步骤S24中接收第二HARQ_ACK。
对于N3，在步骤S31中发送第三识别信号组。
对于U4，在步骤S41中接收3个识别信号组-{第一识别信号组，第二识别信号组，第三识别信号组}，在步骤S42中发送第一上行信息，在步骤S43中接收2个下行信息，在步骤S44中接收第一下行信号和第二下行信号，在步骤S45中发送第一HARQ_ACK和第二HARQ_ACK。
实施例1中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。所述下行信号包括{下行数据，下行控制信令}中的至少之一。{N1，N2，N3}的能用于下行传输的频带全部或者部分重合。第一HARQ_ACK指示第一无线信号中的下行数据是否被正确译码，第二HARQ_ACK指示第二无线信号中的下行数据是否被正确译码。所述2个下行信息分别指示第一时频资源和第二时频资源。第一上行信息指示{N2小区的小区索引，目标识别信号的索引}中的至少前者。第一回传信息 包括{第二时频资源的指示信息，目标识别信号的索引}中的至少前者。所述目标识别信号是第二识别信号组中的一个识别信号。
作为实施例1的子实施例1，N1是U4的主服务小区，N2和N3不是U4的主服务小区。
作为实施例1的子实施例2，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的至少RS资源。
作为实施例1的子实施例3，所述下行信号包括{下行数据，下行控制信令}，所述下行控制信令是所述下行数据的调度信令，所述下行信令中包括相应下行数据所占用的时频资源之外的调度信息。所述调度信息包括{MCS(Modulation and Coding Status，调制编码状态)，RV(Redundancy Version，冗余版本号)，NDI(New Data Indicator，新数据指示)}中的至少之一。
作为实施例1的子实施例4，U4在步骤S41中根据{第一识别信号子组，第二识别信号子组，第三识别信号子组}分别确定3个信道质量-{第一信道质量，第二信道质量，第三信道质量}，其中第三信道质量最差或者只有第三信道质量低于特定标准。其中，{第一识别信号子组，第二识别信号子组，第三识别信号子组}分别是{第一识别信号组，第二识别信号组，第三识别信号组}的子集。所述识别信号子组包括正整数个识别信号。
作为实施例1的子实施例5，上述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值(单位是瓦)，第二参数是第一参数除以第三参数的商，第三参数是在多个宽带符号上的接收功率的线性平均值(单位是瓦)。
作为实施例1的子实施例6，上述特定标准是LTE中的S criterion，其中RSRP和RSRQ分别由上述第一参数和第二参数替代。
实施例2
实施例2示例了一个识别信号所占用的时间资源和频率资源的示意图，如附图2所示。附图2中，斜线标识的方格是一个识别信号的一次发送所占用的时频块。
实施例2中，识别信号是周期性发送的，发送周期为T(单位是毫秒)，所述T是正有理数。
作为实施例2的子实施例1，本申请中的所述识别信号组的每个识别信号在一个发送周期内出现且仅出现一次。
作为实施例2的子实施例2，识别信号的一次发送在时域上占用W个时间窗，所述W是大于1的正整数。
作为实施例2的子实施例3，识别信号的一次发送占用附图2中斜线标识的时频块中的部分资源单位，所述资源单位在频域上包括一个载波，在时域上包括一个宽带符号。
作为实施例2的子实施例4，所述识别信号包括{特征序列，RS资源，广播信息}，所述特征序列包括{Zadoff-Chu序列，伪随机序列}中的至少之一，其中所述特征序列所占用的频带是系统带宽的一部分，所述广播信息包括{系统帧号，识别信号的索引}中的至少之一，RS资源包括正整数个RS端口，所述RS端口所占用的资源单位分布在系统带宽内的所有时频子块中。所述时频子块在频域上包括多个子载波，附图2中斜线标识的时频块在频域上由正整数个时频子块组成。
作为实施例2的子实施例4，识别信号的一次发送在时域上占用W个时间窗，所述W是大于1的正整数。所述W个时间窗中，上述特征序列仅在一个时间窗中出现，RS资源中的每个RS端口在每个时间窗中出现。
实施例3
实施例3示例了两个识别信号所占用的时间资源和频率资源的示意图，如附图3所示。附图3中，斜线标识的方格是一个识别信号即识别信号I的一次发送所占用的时频块，反斜线标识的方格是一个识别信号即识别信号II的一次发送所占用的时频块。
实施例3中，识别信号I和识别信号II分别占用了不同的(一个或者多个)时间窗。
作为实施例3的子实施例1，一个识别信号是单次(即非周期性)发送 的。
实施例4
实施例4示例了UE根据识别信号子组选择服务小区的流程图，如附图4所示。附图4中，小区N5，N6，N7都不是UE U8的主服务小区。
小区N5，N6，N7分别在步骤S51，S61，S71中发送第五识别信号组，第六识别信号组和第七识别信号组。
UE U8在步骤S81中接收第五识别信号组，第六识别信号组和第七识别信号组；在步骤S82中根据第五识别信号子组，第六识别信号子组和第七识别信号子组分别确定第五信道质量，第六信道质量，第七信道质量；在步骤S83中根据第五信道质量，第六信道质量，第七信道质量从N5，N6，N7中选择合适的小区作为服务小区。
实施例4中，第五识别信号子组，第六识别信号子组和第七识别信号子组分别是第五识别信号组，第六识别信号组和第七识别信号组的子集。
作为实施例4的子实施例1，第五识别信号子组，第六识别信号子组和第七识别信号子组分别由第五识别信号组，第六识别信号组和第七识别信号组中接收质量最好的一个识别信号组成。
作为实施例4的子实施例2，第五识别信号子组，第六识别信号子组和第七识别信号子组分别是第五识别信号组，第六识别信号组和第七识别信号组。
作为实施例4的子实施例3，所述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值，第二参数是第一参数除以第三参数的商，第三参数是在相应小区的多个宽带符号上的接收功率的线性平均值。
即第一参数为：
Figure PCTCN2016105170-appb-000001
其中，
Figure PCTCN2016105170-appb-000002
为UE在识别信号子组中的第p个识别信号中的RS资源所占用 的第m个资源单位上的接收信号，P和M分别是识别信号子组中的识别信号数和RS资源中的资源单位的数量。
第三参数为：
Figure PCTCN2016105170-appb-000003
其中，
Figure PCTCN2016105170-appb-000004
为UE系统带宽内的第c个宽带符号中的第g个子载波上的接收信号，C和G分别是UE选择的用于确定第三参数的宽带符号数和系统带宽内的子载波数量。
实施例5
实施例5示例了本申请中的L个时频资源所占用的频带的示意图，如附图5所示。
实施例5中，本申请中的所述L个时频资源多对应的频带分别是附图5中的时频资源{#1，#2，…，#L}所对应的频带。即所述L个时频资源多对应的频带是互相不覆盖的。
作为实施例5的子实施例，本申请中的所述L个时频资源分别是一个系统带宽内的频带。
实施例6
实施例6示例了第一小区发送相邻小区的配置信息的流程图，如附图6所示。实施例6中，第一小区是UE U9的主服务小区。
第一小区在步骤S101中发送高层信令，UE U9在步骤S901中接收高层信令。
其中，所述高层信令包括K个小区的配置信息，所述配置信息包括以下至少之一：
-.小区的标识；
-.识别信号的发送周期；
-.识别信号的一次发送所占用的时间窗的个数；
-.识别信号组中所包括的识别信号的数量。
作为实施例6的子实施例1，所述高层信令是RRC(Radio Resource Control，无线资源控制)信令。
实施例7
实施例7示例了本申请中的在一个PRB对内的一个RS端口所占用RE的示意图，如附图7所示。
实施例7中，本申请中的所述时间窗是LTE子帧，本申请中的所述资源单位是RE。本申请中的一个所述RS端口在一个PRB对内所占用的RE是一个CSI-RS端口所占用的RE。
附图7中的斜线标识的小方格对应本申请中的一个RS端口在一个PRB对内所占用的RE。
作为实施例7的子实施例1，本申请中的一个识别信号组中的任意两个识别信号不出现在同一个LTE子帧中。
实施例8
实施例8示例了在一个PRB对内的多个RS端口所占用RE的示意图，如附图8所示。
实施例8中，本申请中的所述时间窗是LTE子帧，本申请中的所述资源单位是RE。本申请中的一个所述RS端口在一个PRB对内所占用的RE是一个CSI-RS端口所占用的RE。
附图8中的数字x标识的小方格是RS端口#x在一个PRB对内占用的RE，其中，两个RS端口通过OCC(Orthogonal Covering Code，正交覆盖码)的方式共享2个RE，x为{0，1，2，3，4，5，6，7}。
作为实施例8的子实施例1，本申请中的一个识别信号组中的至少两个识别信号出现在同一个LTE子帧中。
作为实施例8的子实施例2，本申请中的一个识别信号组中的所有识别信号出现在同一个LTE子帧中。
实施例9
实施例9示例了识别信号及相应的波束的示意图，如附图9所示。
实施例9中，本申请中的一个识别信号组包括4个识别信号，所述4个识别信号的发送天线端口对应的波束分别如附图9中的(a)，(b)，(c)，(d)所示。
实施例9中，所述4个识别信号能够弥补单个识别信号所形成的盲区–如(e)所示的虚拟覆盖区域内的UE能够通过检测4个识别信号发现小区的存在。
作为实施例9的子实施例1，一个识别信号由一个天线端口发送–对应一个RS端口。该子实施例的优点是节省了RS端口所占用的开销。
作为实施例9的子实施例2，一个识别信号由多个天线端口发送–对应多个RS端口。该子实施例的优点是天线端口的定向性更好，接受鲁棒性更强。
实施例10
实施例10是用于UE中的处理装置的结构框图，如附图10所示。附图10中，UE装置200由第一模块201和第二模块202组成。
第一模块201用于接收K个识别信号组，所述K个识别信号组分别由K个小区发送。第二模块202用于在L个时频资源上分别接收L个下行信号，所述L个下行信号分别由L个小区发送。
实施例10中，所述L个小区的能用于下行传输的系统带宽是重合的，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数。所述K个识别信号组中的L个识别信号组分别由所述L个小区发送，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括RS资源，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。
作为实施例10的子实施例1，第一模块201还用于接收L个下行信息，所述L个下行信息分别指示L个时频资源。
作为实施例10的子实施例2，第一模块201还用于发送L-1个上行信息。其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个 小区，第一小区是所述UE的主服务小区所述上行信息包括小区索引。
作为实施例10的子实施例3，第二模块202还用于发送L个HARQ_ACK，所述L个HARQ_ACK分别用于指示所述L个下行信号中的下行数据是否被正确译码。所述L个HARQ_ACK的目标接收者分别是所述L个小区。
实施例11
实施例11是用于基站中的处理装置的结构框图，如附图11所示。附图11中，基站装置300由第一模块301和第二模块302组成。
第一模块301用于发送R个识别信号组，所述R个识别信号组分别由所述R个小区发送。第二模块302用于在R个时频资源上分别发送R个下行信号。
实施例11中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的至少RS资源，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述R个下行信号分别由R个小区发送。如果所述R大于1，所述R个小区的能用于下行传输的系统带宽是重合的，所述R个小区由所述基站维护。
作为实施例11的子实施例1，第一模块301还用于接收回传信息，所述回传信息指示{R个时频资源，R个识别信号}中的至少前者，所述R是正整数。其中，所述R个识别信号分别属于所述R个识别信号组。
作为实施例11的子实施例2，第一模块301还用于：
-.发送L个下行信息，所述L个下行信息分别指示L个时频资源且所述L个下行信息由第一小区发送；
-.发送Q个回传信息；
-.接收L-1个上行信息。
其中，所述L个时频资源能分别被用于传输L个下行信号，所述L个下行信号分别被L个小区发送，所述L个小区的能用于下行传输的频带是重合 的，所述L是大于1的正整数。所述R个时频资源是所述L个时频资源中的R个，所述R个下行信号是所述L个下行信号中的R个，所述R个小区是所述L个小区中的R个。回传信息#q指示{yq个时频资源，yq个识别信号}二者中的至少前者，对于q＝1,2,...,Q，yq是正整数。所述Q个回传信息一共指示L-R个时频资源即：
Figure PCTCN2016105170-appb-000005
所述L个时频资源由所述R个时频资源和所述L-R个时频资源组成。所述yq个时频资源对应的yq个小区分别是所述yq个识别信号的发送小区。所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述L-1个上行信息的发送者的主服务小区所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
作为实施例11的子实施例3，第二模块302还用于接收R个HARQ_ACK，所述R个HARQ_ACK分别指示所述R个下行信号中的下行数据是否被正确译码。
作为实施例11的子实施例4，所述R为1。
作为实施例11的子实施例5，所述R为2。
作为实施例11的子实施例5，所述L个时频资源是两两正交的。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可以通过程序来指令相关硬件完成，所述程序可以存储于计算机可读存储介质中，如只读存储器，硬盘或者光盘等。可选的，上述实施例的全部或部分步骤也可以使用一个或者多个集成电路来实现。相应的，上述实施例中的各模块单元，可以采用硬件形式实现，也可以由软件功能模块的形式实现，本申请不限于任何特定形式的软件和硬件的结合。本申请中的UE包括但不限于手机，平板电脑，笔记本，上网卡等无线通信设备。本申请中的基站或者系统设备包括但不限于宏蜂窝基站，微蜂窝基站，家庭基站，中继基站等无线通信设备。
以上所述，仅为本申请的较佳实施例而已，并非用于限定本申请的保护范围。凡在本申请的精神和原则之内，所做的任何修改，等同替换，改进等，均应包含在本申请的保护范围之内。

Claims (18)

  1. 一种支持多小区连接的UE中的方法，包括：
    -步骤A.在L个时频资源上分别接收L个下行信号，所述L个下行信号分别由L个小区发送；
    其中，所述L个小区的能用于下行传输的频带全部或者部分重合，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数。
  2. 根据权利要求1所述的方法，所述步骤A还包括如下步骤：
    -步骤A0.接收K个识别信号组，所述K个识别信号组分别由K个小区发送；
    其中，所述K个识别信号组中的L个识别信号组分别由所述L个小区发送，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。
  3. 根据权利要求1所述的方法，所述步骤A还包括如下步骤：
    -步骤A1.接收L个下行信息，所述L个下行信息分别指示L个时频资源。
  4. 根据权利要求2所述的方法，所述步骤A还包括如下步骤：
    -步骤A2.根据K个识别信号子组分别确定K个信道质量；
    其中，所述K个识别信号子组分别是所述K个识别信号组的子集，所述识别信号子组包括正整数个识别信号。
  5. 根据权利要求2-4所述的方法，其中所述步骤A还包括如下步骤：
    -步骤A3.发送L-1个上行信息；
    其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述UE的主服务小区，所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识 别信号组中的一个。
  6. 根据权利要求3所述的方法，其中所述下行信号包括{下行数据，下行控制信令}，所述下行控制信令包括除了所述时频资源之外的所述下行数据的调度信息。
  7. 根据权利要求4所述的方法，其中所述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值，第二参数是第一参数除以第三参数的商，第三参数是在相应小区的多个宽带符号上的接收功率的线性平均值。
  8. 一种支持多小区连接的基站中的方法，包括：
    -步骤A0.发送R个识别信号组，所述R个识别信号组分别由所述R个小区发送；
    -步骤A.在R个时频资源上分别发送R个下行信号；
    其中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口；所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述R个下行信号分别由R个小区发送；如果所述R大于1，所述R个小区的能用于下行传输的频带全部或者部分重合，所述R个小区由所述基站维护。
  9. 根据权利要求8所述的方法，所述步骤A还包括如下步骤：
    -步骤A4.接收回传信息，所述回传信息指示{R个时频资源，R个识别信号}中的至少前者，所述R是正整数；
    其中，所述R个识别信号分别属于所述R个识别信号组。
  10. 根据权利要求8所述的方法，所述步骤A还包括如下步骤：
    -步骤A1.发送L个下行信息，所述L个下行信息分别指示L个时频资源且所述L个下行信息由第一小区发送；以及
    -步骤A5.发送Q个回传信息；
    其中，所述L个时频资源能分别被用于传输L个下行信号，所述L个下行信号分别被L个小区发送，所述L个小区的能用于下行传输的频带全部或者部分重合，所述L是大于1的正整数；所述R个时频资源是所述L个时频资源中的R个，所述R个下行信号是所述L个下行信号中的R个，所述R个小区是所述L个小区中的R个；所述回传信息指示{正整数个时频资源，正整数个识别信号}中的至少前者，所述Q个回传信息一共指示L-R个时频资源；所述L个时频资源由所述R个时频资源和所述L-R个时频资源组成；所述正整数个时频资源对应的小区分别是所述正整数个识别信号的发送小区。
  11. 根据权利要求10所述的方法，所述步骤A还包括如下步骤：
    -步骤A3.接收L-1个上行信息；
    其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述L-1个上行信息的发送者的主服务小区所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
  12. 根据权利要求9，10所述的方法，其中所述下行信号包括{下行数据，下行控制信令}，所述下行控制信令包括除了所述时频资源之外的所述下行数据的调度信息。
  13. 根据权利要求8，10所述的方法，其中一个识别信号子组用于确定一个信道质量，所述识别信号子组分别是所述识别信号组的子集，所述识别信号子组包括正整数个识别信号；所述信道质量包括{第一参数，第二参数}中的至少之一，第一参数是在相应识别信号子组中所有RS端口上的接收功率的线性平均值，第二参数是第一参数除以第三参数的商，第三参数是在相应小区的多个宽带符号上的接收功率的线性平均值。
  14. 一种支持多小区连接的用户设备，包括：
    第一模块：用于接收K个识别信号组，所述K个识别信号组分别由K个小区发送；以及
    第二模块：用于在L个时频资源上分别接收L个下行信号，所述L个下 行信号分别由L个小区发送；
    其中，所述L个小区的能用于下行传输的频带全部或者部分重合，所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述L是大于1的正整数；所述K个识别信号组中的L个识别信号组分别由所述L个小区发送，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口。
  15. 根据权利要求14所述的用户设备，其中第一模块还用于以下至少之一：
    -.接收L个下行信息，所述L个下行信息分别指示L个时频资源；
    -.发送L-1个上行信息；
    其中，所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述UE的主服务小区，所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
  16. 一种支持多小区连接的基站设备，包括：
    第一模块：用于发送R个识别信号组，所述R个识别信号组分别由所述R个小区发送
    第二模块：用于在R个时频资源上分别发送R个下行信号；
    其中，一个所述识别信号组中包括正整数个识别信号，所述识别信号的一次发送占用正整数个时间窗，所述识别信号包括{Zadoff-Chu序列，伪随机序列，RS资源，广播信息}中的一种或者多种，所述广播信息包括所述识别信号的索引，所述RS资源包括正整数个RS端口；所述下行信号包括{下行数据，下行控制信令}中的至少之一，所述R个下行信号分别由R个小区发送；如果所述R大于1，所述R个小区的能用于下行传输的频带全部或者部分重合，所述R个小区由所述基站维护。
  17. 根据权利要求16所述的基站设备，其中第一模块还用于接收回传信息，所述回传信息指示{R个时频资源，R个识别信号}中的至少前者，所述R是正整数；其中，所述R个识别信号分别属于所述R个识别信号组。
  18. 根据权利要求16所述的基站设备，其中第一模块还用于以下至少之一：
    -.发送L个下行信息，所述L个下行信息分别指示L个时频资源且所述L个下行信息由第一小区发送；
    -.发送Q个回传信息；
    -.接收L-1个上行信息；
    其中，所述L个时频资源能分别被用于传输L个下行信号，所述L个下行信号分别被L个小区发送，所述L个小区的能用于下行传输的频带全部或者部分重合，所述L是大于1的正整数；所述R个时频资源是所述L个时频资源中的R个，所述R个下行信号是所述L个下行信号中的R个，所述R个小区是所述L个小区中的R个；所述回传信息指示{正整数个时频资源，正整数个识别信号}中的至少前者，所述Q个回传信息一共指示L-R个时频资源；所述L个时频资源由所述R个时频资源和所述L-R个时频资源组成；所述正整数个时频资源对应的小区分别是所述正整数个识别信号的发送小区；所述L-1个上行信息分别指示所述L个小区中除去第一小区的L-1个小区，第一小区是所述L-1个上行信息的发送者的主服务小区所述上行信息包括{小区索引，目标识别信号的索引}中的至少前者，所述目标识别信号是相应小区发送的识别信号组中的一个。
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