WO2016112721A1 - 非授权资源使用方法、***、基站、ue及计算机存储介质 - Google Patents
非授权资源使用方法、***、基站、ue及计算机存储介质 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/14—Spectrum sharing arrangements between different networks
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- the present invention relates to a wireless communication technology, and in particular, to a method, a system, a base station, a user equipment (UE, User Equipment), and a computer storage medium.
- UE User Equipment
- Unlicensed carriers have the characteristics of low cost, low admission requirements, low cost, ability to coordinate resources, support for multiple wireless access technologies, multiple wireless access sites, and many applications. Therefore, it has become a research hotspot.
- LTE Long Term Evolution
- the LTE system will face many problems in utilizing unlicensed carriers, including: working on unlicensed carriers, some signals or channel transmissions of the LTE system are necessary.
- a physical random access channel PRACH
- PRACH physical random access channel
- SRS channel sounding reference signal
- CRS cell-specific reference signal
- Measurements are made, as well as transmission of uplink and downlink control channels and data channels.
- the transmission resources of these channels or signals are shared by multiple cells of multiple operators. If there is no resource coordination between the base stations, collision or strong interference problems caused by multiple cells transmitting with the same resources may occur. Therefore, how to coordinate the resources of the LTE physical channel or signal on the unlicensed carrier between multiple users or multiple base stations of multiple operators is an urgent problem to be solved.
- the embodiments of the present invention provide a method, a system, a base station, a UE, and a computer storage medium.
- the embodiment of the invention provides a method for using an unlicensed resource, which is applied to a base station, and includes:
- the unlicensed resource configuration information of the local cell is broadcasted to the other base station, so that the other base station determines the unlicensed resource configuration of the self cell according to the unlicensed resource configuration information of the local cell.
- the acquiring the unlicensed resources used by the cell includes:
- the obtaining the unlicensed resource used by the cell by using a contention manner is:
- the UE itself or the subordinate UE performs resource competition on the set unlicensed carrier to obtain the unlicensed resource used by the local cell.
- the pre-coordinated non-authorized resources used by the cell are used as the non-authorized resources used by the cell, including:
- Orthogonal Frequency Division Multiplexing OFDM
- different time slots different subframes, different periods, and/or offset time divisions, different unlicensed frequency bands, different sequence code divisions. Any one of the following, obtaining an unauthorized resource used by the community; or
- All non-authorized resources are grouped or set to different sets, and the unlicensed resources included in each group or set are all orthogonal or partially orthogonal; by adopting a group or a set different from other cells, Obtain the unauthorized resources used by the community.
- the acquiring the unlicensed resources used by the local cell by using a group or a set different from the other cells includes:
- the unlicensed resource used by the local cell is obtained by listening to the common channel or the unlicensed resource group or the set indication information used by other cells that are occupied by the signal.
- the acquiring usage information of the unlicensed resource of another cell includes:
- the usage indication information of the unlicensed resources of other cells is obtained through a physical broadcast channel (PBCH) or a system message.
- PBCH physical broadcast channel
- the usage information of the unlicensed resource of the other cell is obtained by displaying a signaling bearer or by a mapping relationship between a sequence and an unlicensed resource.
- the unlicensed resource configuration information of the local cell is broadcast to other base stations, where:
- the unlicensed resource configuration information of the local cell is broadcast through an unlicensed common channel, a PBCH, or an occupation signal.
- the unlicensed resource configuration information of the local cell is broadcasted by using an unlicensed common channel, including:
- the frequency domain location where the unlicensed common channel is located maps the unlicensed resource configuration information; the frequency domain location corresponds to the unlicensed resource configuration information; or
- mapping by the sequence sent by the unlicensed common channel, the unlicensed resource configuration information; the sequence is in one-to-one correspondence with the unlicensed configuration information; or
- the occupied signal has at least one of the following characteristics:
- the occupation signal is in one-to-one correspondence with the unlicensed resource configuration information
- the root sequence of the occupied signal is the same as the root sequence of the transmitted reference signal
- the occupancy signal cyclic shift indicates the number of subframes in which the local cell occupies an unlicensed resource transmission data channel
- the pattern of the occupancy signal indicates the format and period of the PRACH channel, and/or the symbol index of the SRS.
- the other base station includes: a base station of a different operator from a base station that broadcasts the unlicensed resource configuration information of the local cell, and a base station that is the same operator as the base station that broadcasts the non-authorized resource configuration information of the local cell.
- the unlicensed resource configuration information that is broadcast includes one or more of a time domain resource, a frequency domain resource, and a code domain resource configuration information.
- the unlicensed resource configuration information broadcasted is the unlicensed resource configuration information of the SRS and/or the PRACH.
- the unlicensed resource configuration information of the broadcasted SRS is all or part of the information of the existing SRS resource configuration, or is the symbol resource configuration information of the newly added SRS.
- the unlicensed resource configuration information of the broadcasted PRACH is all or part of the information of the existing PRACH resource configuration, or is the newly added PRACH sequence resource configuration information.
- the method further includes:
- the subordinate UE unauthorized resource configuration information is notified by means of a common channel, a PBCH, a physical signaling, or an occupied signal mapping.
- the physical signaling is downlink control information (DCI, Downlink Control Information) or a radio resource control (RRC) message.
- DCI downlink control information
- RRC radio resource control
- the method further includes:
- the embodiment of the present invention further provides a method for using an unlicensed resource, which is applied to a UE, and includes:
- resource competition is performed on a corresponding unlicensed carrier, or a physical channel or signal is transmitted on a corresponding unlicensed resource.
- the resource preemption signaling is implemented by using at least one of the following: a scheduling signaling indication, a NACK information indication, and a defined RRC message bearer.
- the unlicensed resource configuration information is carried by a common channel, an occupied signal, a PBCH, or a physical signaling.
- all the unlicensed resource configuration information corresponding to the physical channel or the signal includes a preset first part of the unlicensed resource configuration information, the second part of the unlicensed resource configuration information, and the third part of the unlicensed resource configuration information;
- the first part of the unlicensed resource configuration information is carried by the PBCH, and the third part of the unlicensed resource configuration information is carried by the physical signaling.
- the physical signaling is: an RRC message, or a DCI.
- the signaling is an unlicensed resource configuration signaling; the transmitting, according to the signaling, a physical channel or a signal on a corresponding unlicensed carrier, including:
- Time Division Multiplexing TDM
- Frequency Division Multiplexing FDM
- FDM frequency division multiplexing
- the physical channel or signal adopts a full bandwidth mapping manner.
- the method further includes:
- the SRS, the PRACH preamble sequence, or the first N symbols, the ZC sequence, and the PN sequence of the uplink data are repeatedly transmitted; N is a positive integer equal to or less than 6.
- the embodiment of the present invention further provides a base station, including: an acquiring unit and a broadcasting unit;
- the acquiring unit is configured to acquire an unlicensed resource used by the local cell
- the broadcast unit is configured to broadcast the unlicensed resource configuration information of the local cell to the other base station, so that the other base station determines the unlicensed resource configuration of the self cell according to the unlicensed resource configuration information of the local cell.
- the acquiring unit is configured to obtain an unlicensed resource used by the cell by means of resource contention;
- the broadcast unit is configured to: broadcast the unlicensed resource configuration information of the local cell by using an unlicensed common channel, a PBCH, or an occupied signal.
- the base station further includes: a configuration information notification unit configured to notify the subordinate UE of the unlicensed resource configuration information by using a common channel, a PBCH, a physical signaling, or an occupied signal mapping manner.
- the base station further includes: a data sending unit, configured to send a channel or a signal on the unlicensed resource corresponding to the unlicensed resource configuration information.
- An embodiment of the present invention further provides a UE, including: a receiving unit and an executing unit;
- the receiving unit is configured to receive signaling sent by the base station
- the executing unit is configured to perform resource contention on a corresponding unlicensed carrier according to the signaling, or send a physical channel or a signal on a corresponding unlicensed resource.
- the execution unit is further configured to immediately send the SRS, the preamble sequence, or the first N symbols and the ZC sequence of the uplink data repeatedly after competing for resources on the corresponding unlicensed carrier, and one of the PN sequences.
- N is a positive integer less than or equal to 6.
- the embodiment of the present invention further provides an unlicensed resource usage system, including: a first base station and one or more second base stations;
- the first base station is configured to acquire an unlicensed resource used by the local cell, and broadcast the unlicensed resource configuration information of the local cell to the second base station, so that the second base station is configured according to the non-authorized cell of the first base station Authorize resource configuration information to determine the unlicensed resource configuration of the own cell.
- the second base station is configured to receive the unlicensed resource configuration information broadcast by the first base station.
- the system further includes: the UE, configured to receive the signaling sent by the first base station; and perform resource competition on the corresponding unlicensed carrier according to the signaling, or on the corresponding unlicensed resource. Send a physical channel or signal.
- the embodiment of the present invention further provides a computer storage medium, where the computer storage medium includes a set of instructions, when the instruction is executed, causing at least one processor to execute the unlicensed resource usage method on the base station side, or execute the foregoing UE The method of using the unlicensed resource on the side.
- the base station acquires the unlicensed resource used by the local cell, and broadcasts the unlicensed resource configuration information of the local cell to other base stations, so as to
- the other base station may determine the unlicensed resource configuration of the own cell according to the unlicensed resource configuration information of the local cell; and the UE receives the signaling sent by the base station; according to the signaling, performs resource competition on the corresponding unlicensed carrier, or Sending a physical channel or signal on the corresponding unlicensed resource, so that under the premise of interference coordination/avoidance
- base stations of different cells of different operators can transmit data on unlicensed carriers, which improves spectrum efficiency.
- FIG. 1 is a schematic flowchart of a method for using an unauthorized resource according to Embodiment 1 of the present invention
- FIG. 2 is a schematic diagram of partitioning an unlicensed resource according to an embodiment of the present invention.
- FIG. 3 is a schematic diagram of a grouping of unauthorized resources according to an embodiment of the present invention.
- FIG. 5 is a schematic diagram of resource division corresponding to PRACH according to Embodiment 2 of the present invention.
- FIG. 6 is a schematic diagram of time division of different school district symbols according to the third SRS corresponding resource according to the embodiment of the present invention.
- FIG. 7 is a schematic diagram of multiplexing different non-authorized resources by different UEs according to Embodiment 4 of the present invention.
- FIG. 8 is a schematic diagram of an uplink and downlink subframe according to Embodiment 6 of the present invention.
- FIG. 9 is a schematic flowchart of a method for unlicensed carrier coordination and data transmission on a base station side according to Embodiment 7 of the present invention.
- FIG. 10 is a schematic flowchart of a UE side unlicensed carrier coordination and data sending method according to Embodiment 8 of the present invention.
- FIG. 11 is a schematic structural diagram of a base station according to Embodiment 9 of the present invention.
- FIG. 12 is a schematic structural diagram of a UE according to Embodiment 9 of the present invention.
- FIG. 13 is a schematic structural diagram of a non-authorized resource usage system according to Embodiment 9 of the present invention.
- Unlicensed carriers have the following characteristics:
- M2M Machine to machine
- V2V Vehicle to vehicle
- the use of unlicensed carriers in the LTE system can greatly enhance the potential spectrum resources of the LTE system, enabling the LTE system to obtain lower spectrum costs.
- an LTE system works with an unlicensed carrier, it is necessary for transmission of some signals or channels, and the transmission resources of these channels or signals are shared by multiple cells of multiple operators, if non-carriers are not used between the base stations.
- spectrum resources are coordinated, there will be collision or strong interference problems caused by multiple cells transmitting with the same resources. Therefore, how to coordinate the resources of the LTE physical channel or signal on the unlicensed carrier between multiple users or multiple base stations of multiple operators is an urgent problem to be solved.
- the unlicensed resource used by the local cell is acquired; the unlicensed resource configuration information of the local cell is broadcast to other base stations, so that the other base station can be configured according to the unlicensed resource of the local cell. Information to determine the unlicensed resource configuration of the own cell.
- This embodiment provides a method for using an unlicensed resource, which is applied to a base station. As shown in FIG. 1, the method includes the following steps:
- Step 101 Obtain an unlicensed resource used by the community.
- the non-authorized resources used by the cell are obtained by means of resource competition;
- the non-authorized resource used by the cell is obtained by using the contention in a competitive manner, specifically:
- the UE itself or the subordinate UE performs resource competition on the set unlicensed carrier to obtain the unlicensed resource used by the local cell.
- the subordinate UE may be a UE in an idle state, a UE that receives a scheduling request, or a UE that is allowed to be scheduled.
- the base station or the subordinate UE can directly transmit signals or channels on the coordinated resources without performing a clean channel estimation process.
- all the unlicensed resources can be divided into two parts, and some of them are resources shared by all the cells. This part of the resources requires the base station to obtain the unlicensed resources used by the cell through resource competition; the other part is not The resources shared by all the cells, which need the base station to obtain the unlicensed resources used by the cell by means of coordination with other base stations.
- the division of unlicensed resources can be divided according to network needs.
- the pre-coordination with the other base stations, and the pre-defined unlicensed resources that are obtained by the coordination are used as the non-authorized resources used by the local cell, and specifically includes:
- All unlicensed resources may be grouped or set to different sets, and the unlicensed resources included in each group or set are all orthogonal or partially orthogonal, so that interference can be effectively avoided; by adopting a group or a set different from other cells , obtain the unauthorized resources used by the community.
- the acquiring the non-authorized resources used by the local cell by using a group or a set different from the other cells specifically includes:
- the unlicensed resource used by the local cell is obtained by listening to the common channel or the unlicensed resource group or the set indication information used by other cells that are occupied by the signal.
- Each radio frame or period T is initialized once, and k is a subframe or a change period T.
- the hash function is associated with a cell ID and a time slot; the random sequence is a sequence having an irrelevance, such as an m sequence, a gold sequence, and the like.
- the obtaining the usage information of the non-authorized resources of the other cell includes:
- the usage information of the unlicensed resource of the other cell may be obtained by displaying a signaling bearer or by a mapping relationship between a sequence and an unlicensed resource.
- Step 102 Broadcast the unlicensed resource configuration information of the local cell to the other base station, so that the other base station may determine the unlicensed resource configuration of the own cell according to the unlicensed resource configuration information of the current cell.
- the unlicensed resource configuration of the local cell may include one or more of a time domain resource, a frequency domain resource, and a code domain resource configuration; correspondingly, the broadcasted non-authorized resource configuration information may include: a time domain resource, One or more of frequency domain resource and code domain resource configuration information.
- the broadcast unlicensed resource configuration information is the unlicensed resource configuration information of the SRS and/or the PRACH;
- the unlicensed resource configuration information of the broadcasted SRS is all or part of the information of the existing SRS resource configuration, or is the symbol resource configuration information of the newly added SRS;
- the unlicensed resource configuration information of the broadcasted PRACH is all or part of the information of the existing PRACH resource configuration, or is the newly added PRACH sequence resource configuration information.
- the unlicensed resource is used to transmit a physical channel or signal.
- the information sent by using the unlicensed resource may include: a PRACH preamble sequence, an SRS, a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH, a physical uplink control channel), and a demodulation.
- Reference Signal DMRS, De Modulation Reference Signal
- CRS CRS
- Channel State Indication-Reference Signal CSI-RS
- Positioning Reference Signal PRS
- Demodulation Reference Signal DRS, Dedicated) Reference Signal
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- the unlicensed resource configuration information when transmitting a plurality of channels or signals, may indicate a part of the transmitted channels or signals (one or more), and for another part of the channels or Signals, other base stations can be determined by other signals or channels received.
- the device broadcasts the unlicensed resource configuration information of the local cell to other base stations, specifically:
- the unlicensed resource configuration information of the local cell is broadcast through an unlicensed common channel, a PBCH, or an occupation signal.
- the unlicensed resource configuration information of the local cell is broadcasted by using the unlicensed common channel, and specifically includes:
- the frequency domain location where the unlicensed common channel is located maps the unlicensed resource configuration information; the frequency domain location corresponds to the unlicensed resource configuration information; or
- mapping by the sequence sent by the unlicensed common channel, the unlicensed resource configuration information; the sequence is in one-to-one correspondence with the unlicensed configuration information; or
- the non-authorized resource configuration information is mapped by the sequence sent by the unlicensed common channel, in other words, on the unlicensed common channel, according to a predefined period, it is sent on some predefined unlicensed carriers.
- the transmitted sequence is transmitted on the first few OFDM symbols of the channel.
- the transmitted sequence can be transmitted in the first one, the first two or the first three OFAMs of the channel.
- the occupancy signal may, on the one hand, characterize the preemption to the unlicensed resource; on the other hand, may represent the unlicensed resource configuration information of the local cell.
- the occupancy signal may be in one-to-one correspondence with the unlicensed resource configuration information.
- the root sequence of the occupied signal may be the same as the root sequence of the transmitted reference signal.
- the cyclic shift of the occupied signal may indicate the number of subframes in which the own cell occupies an unlicensed resource to transmit a data channel.
- the pattern of the occupancy signal may indicate the format and period of the PRACH channel and/or the symbol index of the SRS.
- the other base stations include: base stations of different operators and base stations of the same carrier.
- the non-authorized resource configuration information may be directly exchanged through the X2 interface, so as to perform interference coordination of the unlicensed resources.
- the method can also include:
- the subordinate UE unauthorized resource configuration information is notified by means of a common channel, a PBCH, a physical signaling, or an occupied signal mapping.
- the physical signaling includes a system message, and specifically may be a DCI or an RRC message.
- the method may further include: transmitting a channel or a signal on the unlicensed resource corresponding to the unlicensed resource configuration information.
- the coordination of unlicensed resources and the way of sending data can be in the following ways:
- Mode 1 Fully adopt the Listening Before Talk (LBT) mechanism, that is, the base station or the UE needs to perform interception or resource competition before transmitting data, and only detects the base station and/or the non-authorized resource base station and/or the non-authorized resource.
- the UE under the base station can send information on the unlicensed carrier.
- Manner 2 The LBT mechanism is not followed, that is, the base station or the UE does not need to listen to the unlicensed carrier or perform resource competition to send data according to the predefined coordinated unlicensed resource.
- a PUCCH for a PUSCH, a PUCCH, a DMRS, a PDCCH, and a PDSCH, different base stations adopt mode 1 to transmit on an unlicensed carrier.
- the above-mentioned synchronization channel or measurement signal can also be transmitted on a channel that can be directly used without performing resource contention or a clean channel estimation process.
- the neighboring cells can be configured with different PRACH and SRS resources through negotiation through wired or air interface signaling or X2 interface.
- the coordination mode of the two base stations of the same carrier is preferably used. Otherwise, the non-authorized resources may be configured for the two adjacent cells in the following manner:
- Manner 1 The first base station sends a resource configuration indication information of the local cell through the common channel on the unlicensed carrier, and the second base station selects and configures different resources of the local cell, such as different OFDM symbols, after detecting the indication information. Or different sub-frame patterns, or different periods or offsets, or different frequency bands, different codes, and the like.
- the common channel is sent on a preset unlicensed carrier according to a preset period.
- the base station obtains the usage indication information of the unlicensed resources of other cells by receiving the occupation signal sent by other cells, so as to select different resources of the local cell.
- Manner 3 The base station directly detects the resource configuration signaling sent by the other base station to the UE through the air interface physical broadcast channel or the system message, and obtains the use indication information of the unlicensed resource of the other cell, and then selects different resource configurations for the local cell.
- the corresponding unlicensed resource may be implicitly obtained by listening to the preamble sequence or the reference signal sent by the other base station or other subordinate UEs.
- the sequence may be pre-agreed with the resource, and then the different resources are configured to be allocated to the local cell.
- Manner 4 The non-authorized resources PRACH and SRS are grouped in advance. As shown in FIG. 3, the packets may be divided into only a certain time domain, a frequency domain, or a code domain, or all time-frequency and sequence may be separated. The domain is uniformly divided, and different resources of the cell are configured according to the packet selection.
- all resources are divided into several large collections according to the number of operators, such as
- the first M bars of the predefined preamble sequence correspond one-to-one with the large set index.
- the first base station or the subordinate UE transmits a preamble sequence or a cyclic shift of the sequence on a common channel of the unlicensed carrier, and the other base station or the UE can know the resource large set index corresponding to the operator by listening to the sequence, and then According to the large set index of these resources, it is selected to configure different resources of the local cell.
- the preamble sequence may also be sent on a resource that uses the LBT, that is, the base station or the UE that contends to the resource transmits the preamble sequence on the unlicensed carrier that is contending, and is used as an occupation signal to prevent other base stations from using the resource.
- the UE under the base station or the base station can use the resource after detecting the preamble, and on the other hand, it is used to indicate the PRACH or SRS resource set used by the base station or the operator, and the base stations of other operators need to select different sets to configure. For subordinate UEs.
- the neighboring cells of different base stations of the same operator use different unlicensed resources through air interface interaction negotiation, or determine the used resource subset index by using a random number generated by a function or a random sequence.
- the base station notifies the coordinated cell resource configuration information to other base stations through a common channel or an occupation signal, and notifies the UE by using a system message, a physical broadcast channel, control signaling, or an RRC message.
- the unlicensed resource configuration may include at least one of an OFDM symbol index, a slot index, a period, an offset, a PRB index and number, a sequence index, a cyclic shift, and a comb.
- Another method for using the unlicensed resource in the embodiment is applied to the UE, as shown in FIG. 4, The method includes the following steps:
- Step 401 Receive signaling sent by the base station.
- the signaling may be resource preemption signaling or unlicensed resource configuration signaling.
- Step 402 Perform resource competition on the corresponding unlicensed carrier according to the signaling, or send a physical channel or signal on the corresponding unlicensed resource.
- the resource competition is performed on the corresponding unlicensed carrier; when the signaling is the unlicensed resource configuration signaling, the corresponding non-authorized resource configuration signaling is not Authorize resource configuration information to send physical channels or signals on the corresponding unlicensed resources.
- the resource preemption signaling may be implemented in at least one of the following: a scheduling signaling indication, a NACK information indication, and a defined RRC message bearer.
- the unlicensed resource configuration information may be carried by a common channel, an occupation signal, a PBCH, or a physical signaling.
- all unlicensed resource configuration information corresponding to the physical channel or signal may be predefined into a first part, a second part, and a third part according to requirements; in other words, the physical channel or signal corresponds to All the unlicensed resource configuration information includes a preset first part of the unlicensed resource configuration information, a second part of the unlicensed resource configuration information, and a third part of the unlicensed resource configuration information; wherein the first part of the unlicensed resource configuration information is public
- the second part of the unlicensed resource configuration information is carried by the PBCH, and the third part of the unlicensed resource configuration information is carried by the physical signaling.
- the physical signaling may be: an RRC message or a DCI, and the physical signaling may be sent on an authorized or unlicensed carrier.
- the unlicensed resource configuration information when the unlicensed resource configuration information is a resource location of the data channel indicated by the DCI, the unlicensed resource configuration information indicates a resource location of a data channel of the multiple subframes.
- the unlicensed resource configuration information may include: at least an OFDM symbol index, a slot index, a period, an offset, a PRB index and number, a sequence index, a cyclic shift, and a comb.
- the physical channel or signal is sent on the unlicensed resource by one of TDM, FDM, CDM or different resource group manners.
- the unlicensed resource may include two parts, one part is obtained by the base station to which the UE belongs or the UE itself or other UEs of the same base station, and the other part is negotiated by the base station to which the UE belongs and other base stations.
- the method may further include:
- N is a positive integer equal to or less than 6.
- the physical channel or signal adopts a full bandwidth mapping manner.
- the base station acquires the unlicensed resource used by the local cell, and broadcasts the unlicensed resource configuration information of the local cell to the other base station, so that the other base station may determine according to the unlicensed resource configuration information of the local cell.
- the non-authorized resource configuration of the self-cell the UE receives the signaling sent by the base station; performs resource competition on the corresponding unlicensed carrier according to the signaling, or sends a physical channel or signal on the corresponding unlicensed resource, so
- the base station or UE of different cells of different operators can be on the unlicensed carrier on the premise of interference coordination/avoidance. Data transmission is performed to improve spectral efficiency.
- This embodiment describes a method for resource coordination and transmission of PRACH on an unlicensed carrier.
- the unlicensed resources corresponding to the PRACH include time domain resources, frequency domain resources, and preamble resources.
- the resource configuration of each cell can be extended on the basis of the original 64 types specified by LTE.
- the PRACH on the unlicensed carrier can be sent in the following ways.
- the obtained unlicensed resource may be: the time division unit may be one, two, three or three integer multiple subframes are unit-multiplexed; or different carrier cells directly implement different UEs by using LBT
- the PRACH is transmitted time-divisionally on the unlicensed carrier; or, the neighboring cells transmit the same preamble sequence on the same unlicensed carrier through different subframe time divisions.
- the system frame numbers allocated by the PRACHs of different cells are as follows:
- Second cell 3,7,9,11,15,17,23,25,28,32;
- Fourth cell 2, 4, 8, 11, 15, 19, 21, 24, 26, 29.
- the obtained unlicensed resources may be: a plurality of frequency bands that are divided into equal intervals or non-uniforms according to the frequency domain, and each frequency band includes six physical resource blocks (PRBs), different operations.
- the UE of the commercial cell can simultaneously transmit the same PRACH sequence on the unlicensed carriers of different frequency bands.
- Manner 3 Different operator cell UEs use the CDM coordination mode to obtain the unlicensed resources of the PRACH. That is, the different UE cells can adopt the CDM mode at the same time.
- the PRACH is sent on the weight carrier.
- the obtained unlicensed resources may be: pre-defined to group the existing 838 Preambles, different cells select different groups, or different cells adopt different cyclic shifts of the same root sequence to implement the CDM mode.
- the PRACH is sent on the same unlicensed carrier; or the number of the 64 root sequences in each cell is randomly selected in a certain time to implement the PRMS to simultaneously transmit the PRACH on the same unlicensed carrier.
- the random sequence can generate different random numbers, and the random sequence corresponding to the random number is associated with the subframe number and the cell ID, so that the neighboring cell can achieve the effect of interference randomization.
- different cells can implement the coordination of the unlicensed resources of the foregoing PRACHs by using one of the following coordination methods, that is, informing other cells of the current cell PRACH resource configuration information or configuration indication information:
- Method 1 Pre-defined mode, that is, multiple operators determine the PRACH resources on each carrier's unlicensed carrier through mutual negotiation, and the non-authorized resources of the PRACH of the neighboring cells are different, such as different time domain location resources. After the determination, the UEs of the respective operator cells send the PRACH at a predefined time or a predefined unlicensed frequency band to avoid a serious collision.
- Method 2 The signaling notification mode, that is, the first-input network base station sends the PRACH resource configuration information or the configuration indication information of the UE of the local cell through the unlicensed common channel, and the cells of different operators subsequently select other different PRACH non-authorized resources for the neighboring cell. Configuration.
- the base station A is the first one in the geographic location to start using the unlicensed carrier.
- the first deployment of the unlicensed carrier can be determined according to the actual deployment situation of the operator of the geographical location L1.
- the base station A will transmit the PRACH resource configuration information of the local cell on the unlicensed common channel, and the information may be sent by using the display signaling or being notified to other base stations by other means.
- the method for sending the PRACH resource configuration information of the local cell may be: directly, the base station A
- the PRACH resource configuration information on the unlicensed carrier is carried by the common channel.
- the resource configuration information mainly includes: the uplink bandwidth, the PRACH frequency domain location f1, the time domain period t1, the number of the preamble ZC root sequence, and the number 1-20.
- the method for transmitting the PRACH resource configuration information of the local cell may be: the frequency domain location mapping of the common channel, and the resource configuration group number information of the PRACH, for example, the frequency domain location f2 corresponds to the group number 7 of the PRACH resource configuration.
- the method for transmitting the PRACH resource configuration information of the current cell may be: determining a resource group by a one-to-one correspondence between the predefined sequence and the configuration group, for example, the sequence 00110110 identifies the corresponding group number 9; and the sequence of the common channel bearer maps the PRACH resource on the unlicensed carrier. Configure the group.
- the PRACH resource configuration information of the local cell on the common channel is periodically transmitted, and subsequent base stations may perform blind detection on the common channel if the unlicensed carrier is used, and determine whether the used or standby is not used according to the blind detection result. Authorize resources and then select different unlicensed resources.
- the method for transmitting the PRACH resource configuration information of the current cell may be: the base station or the subordinate UE that preempts the unlicensed resource sends the PRACH resource configuration indication information of the local cell by using the occupation signal.
- the indication information is indicated by a display bit or indicated by an implicit mapping.
- the PRACH resource configuration information is one or more of a time domain resource configuration, a frequency domain resource configuration, or a code domain resource configuration.
- Method 3 A blind detection method, after a cell of a different operator subsequently blindly checks the PRACH sent by the neighboring cell, determines the PRACH unlicensed resource configuration of the first-incoming network cell, and then selects a different PRACH configuration for the cell.
- the cell of the same carrier can implement the time domain or the frequency domain or the preamble configuration of the PRACH resources on the unlicensed carrier through the air interface exchange negotiation, so as to avoid the serious collision problem of the same PRACH non-authorized resource in the neighboring cell configuration.
- the PRACH specific resource configuration information on the unlicensed resource of the cell is notified to the UE of the cell by using a system message or a paging message, and the UE follows the UE.
- the configuration information sends the corresponding PRACH on the corresponding unlicensed resource at the corresponding moment. among them,
- the existing competition scheme can be used to solve the problem.
- the unlicensed resource group of the PRACH may be predefined, by time domain (different subframe or system frame), frequency domain, or The preambles are grouped.
- preambles with root sequence numbers 0-837 are grouped.
- the first group 1, M+1, 2M+1, 3M+1, 4M+1, 5M+1, ..., (Q-1) ⁇ M+1;
- the second group 2, M+2, 2M+2, 3M+2, 4M+2, 5M+2, ..., (Q-1) ⁇ M+2;
- the third group 3, M+3, 2M+3, 3M+3, 4M+3, 5M+3, ..., (Q-1) ⁇ M+3;
- Group M M, 2M, 3M, 4M, 5M, 6M, ..., Q ⁇ M.
- Q and M are positive integers.
- the base station randomly selects one of the resource configurations to the local cell at intervals, or the preamble group index of each cell is determined by a random number generated by a random sequence, and the sequence and the random number determined by the neighboring cell are different.
- the resource configuration corresponding to the existing PRACH can be directly divided.
- the existing 64 configurations of the LTE are classified according to the carrier.
- the subframe 2 with the PRACH configuration index parameter 26 defined in the existing LTE can be allocated to the UE of one operator.
- sub-frame 5 is used by another operator's UE
- sub-sub Frame 8 is shared by two operators; or, the original 64 configurations can be divided, and different operators allocate different ones.
- a new configuration index 65 is added, the preamble format is 0, the corresponding system frame is an integer multiple of 3, and the subframe is 0.
- cells of different operators may also adopt the following methods:
- the first configuration does not consider negotiation, and after finding that the interference or collision is serious, select different configurations, and then notify the UE of the UE to change the PRACH configuration through a system message or an RRC message.
- the resource collision problem caused by the multiple cells simultaneously using the unlicensed resources to transmit the PRACH can be avoided by using the unlicensed resource coordination method provided in this embodiment, thereby effectively implementing resource coordination under the premise of interference avoidance.
- the base station or the base station triggers the subordinate UE to perform interception or resource competition on the predefined carrier to obtain the unlicensed resource.
- the subordinate UEs of the base station that contends to the unlicensed resource can transmit the PRACH on the unlicensed carrier.
- a subordinate UE that does not compete for a base station of an unlicensed resource cannot transmit a PRACH on a corresponding unlicensed carrier for a period of time.
- the UE that does not compete for resources can transmit the PRACH through a channel that can be directly used without performing resource contention or a clean channel estimation process.
- the third type using LBT and non-LBT combination
- some PRACH non-authorized resources are pre-defined to be obtained by means of non-LBT, and other PRACH unlicensed resources are obtained by using LBT.
- the PRACH can be sent according to the predefined negotiated unlicensed resources.
- This embodiment describes a method for coordinating and transmitting SRS unlicensed resources of multiple cells of different operators.
- the SRS unlicensed resources may include time domain resources (OFDM symbols, subframes), frequency domain resources, and code domain resources corresponding to different sequences and cyclic shifts.
- time domain resources OFDM symbols, subframes
- frequency domain resources OFDM symbols, subframes
- code domain resources corresponding to different sequences and cyclic shifts.
- the SRS on the unlicensed carrier can be sent in the following ways.
- the first type using non-LBT transmission method
- Method 1 Different operators use different OFDM symbols or slot time division methods. Different base stations of the same carrier negotiate the UEs of different cells through the X2 interface to transmit SRS in different subframe time division, frequency division or code division.
- a plurality of operator cells transmit SRSs through different OFDM symbols.
- Method 1 a predefined way
- each operator uses one of each subframe or Multiple OFDM symbols.
- the first-in-one network base station transmits the OFDM symbol indication information of the SRS of the UE of the UE through the unlicensed common channel, and the cells of different operators subsequently select other different OFDM symbols.
- the OFDM symbol indication information of the SRS on the unlicensed common channel is periodically transmitted, and all the base stations need to blindly check the unlicensed common channel to obtain the OFDM symbol of the SRS of the different carrier cell UE.
- the base station or the subordinate UE that preempts the unlicensed resource sends the SRS resource configuration indication information of the local cell by using the occupation signal.
- the indication information is indicated by a display bit or indicated by an implicit mapping.
- a 3-bit display indicates the OFDM symbol in which the indication is located, or a specific symbol index is implicitly obtained by a predefined occupation signal, such as a sequence index and a mapping relationship of different symbols.
- the manner in which the reference signal pattern transmitted through the common channel is used to learn the OFDM symbol in which the SRS is located is:
- one mode maps a symbol index by a frequency domain offset position of the CRS, and frequency shifts 0 subcarriers into a first OFDM symbol, 2 is a second OFDM symbol, and so on;
- the subsequent cells are detected by using one OFDM symbol, and some judgment rules are agreed, and the unlicensed resource configuration of the other operator cell SRSs that are adjacent to each other is finally determined, and then the different SRS unlicensed resources are configured for the local cell.
- Manner 4 Obtain the SRS unlicensed resources used by other cells by listening or detecting the occupied signals, and then configure different SRS unlicensed resources for the cell;
- Manner 5 Obtaining a set of SRS subframes of a certain cell by receiving a broadcast system message sent by another base station, and then selecting a different set of subframes, for example, configuring two parameters of T SFC and ⁇ SFC in the local cell are different from the above; here, T SFC Indicates the subframe period; ⁇ SFC indicates the subframe offset.
- the neighboring cell of the same operator may perform interference coordination of the SRS unlicensed resource through the X2 direct interaction SRS configuration message in addition to the foregoing coordination mode, and the interference coordination method may adopt one of the following methods:
- Subframe time division that is, the subframe in which the SRS of different cells is located is different, and is implemented by configuring one of two parameters, T SFC and ⁇ SFC .
- Different UEs in the same cell can be further configured with different periods and offset time divisions.
- the SRS subframes of the UEs in different cells are the same, and the frequency domain locations are different;
- the SRS bandwidths of the UEs in different cells are the same, the root sequences are different (different groups), and the same cell UE adopts different cyclic shift orthogonal.
- the base station broadcasts the SRS symbol of the local cell through the PBCH, and notifies the UE of the SRS period, offset, bandwidth, cyclic shift, and related parameters such as comb by the RRC message.
- the same UE completes the detection of the entire bandwidth through multiple different frequency domain location configurations.
- Other methods similar to different operators for SRS unlicensed resource coordination include: different operators transmit SRS through different unlicensed frequency bands; different operators of the same carrier negotiate different OFDM symbols/different subframe time divisions, or narrowband SRS in the maximum frequency band.
- Frequency division, or code division sequences used by all UEs in the same cell are from the same sequence group, and SRS orthogonalization is implemented by cyclic shift or comb when the UEs have the same bandwidth, so that when there are different bandwidths, natural Orthogonal is implemented in FDM.
- Method 2 SRS unlicensed resources of different cells of different operators are sent in a coordinated manner of packets.
- the network access base station broadcasts the indication information indicating the group number used by the SRS of the local cell in the unlicensed common channel, and the other base station obtains the configuration information of the SRS unlicensed resource of the cell by listening to the indication information, so that the neighboring cells of different operators Different x values are selected, and cells of the same operator select different y values.
- the other base station may also implicitly obtain a configuration group of the corresponding SRS by using the cell ID of the first-incoming network base station, and in particular, the value of y may be associated with the cell ID.
- the other base station may implicitly obtain a configuration group (preamble sequence (838) packet of the cell SRS unlicensed resource that is trapped in the network base station by using the cell PRACH resource of the trapped network base station in the Broadcast Control Channel (BCCH).
- the PRACH resource of a certain cell is corresponding to the SRS configuration of the local cell, and the other cells obtain the PRACH resource of the cell by receiving the BCCH, thereby indirectly obtaining the configuration information of the SRS unlicensed resource of the cell, and then selecting different groups.
- the sequence used by the base station or the UE to occupy the occupied signal on the unlicensed carrier implicitly obtains the configuration information of the SRS unlicensed resource of the cell.
- the sequence of occupied signals and the SRS resource configuration are also predefined one-to-one correspondence.
- the base station notifies the UE SRS sequence cyclic shift, comb and other SRS resource configuration parameters by using the RRC message.
- the cells of different operators use the non-LBT mode to coordinate the use of SRS unlicensed resources, so that multiple UEs can send SRS on the unlicensed carrier under the premise of interference coordination/avoidance.
- the U carrier is measured, and the subsequent base station can perform reasonable uplink scheduling/resource allocation when competing for resources based on the measurement result, thereby improving spectrum efficiency.
- the second type using LBT transmission method
- the sending manner of the LBT refers to: the base station or the base station triggers the subordinate UE to perform interception or resource contention on the predefined carrier to obtain the unlicensed resource, and only the subordinate UE that contends to the unlicensed resource can send the SRS. Subordinate UEs of base stations that do not compete for resources cannot transmit SRS.
- the process of the UE dynamically transmitting the SRS is as follows:
- the base station itself or the base station triggers the subordinate UE to compete for resources of the unlicensed resources.
- the base station itself contends to the unlicensed resource, and the base station sends the DCI on the authorized carrier or the contending unlicensed carrier to trigger the sending of the UE by the UE while transmitting the occupied signal on the unlicensed resource that is contending. SRS.
- the UE In the LBT transmission mode, the UE usually transmits an aperiodic SRS because the time at which the resources are preempted is uncertain.
- the SRS resources are extended to multiple OFDM symbols of one subframe, and the frequency domain structure of each symbol is the same as the SRS of one subframe of the original LTE.
- the signaling included in the DCI indicates the OFDM symbol index used by the SRS of each UE, and other parameter groups (including bandwidth, frequency domain location, comb, cyclic shift, antenna port, and period, etc.) are configured to the UE through RRC messages.
- a new DCI format can be defined, which is specifically used to trigger multiple UEs to perform SRS transmission. Specifically, several bits in the DCI are required to indicate the non-week of a specific UE.
- some subframes or OFDM symbols are used to transmit SRS during the occupation time, and other subframes or symbols are used to transmit uplink and downlink data.
- the UE After receiving the signaling, the UE sends the SRS according to the indicated parameters at time n+k.
- the value of k should be as small as possible to ensure that as many UEs as possible can complete the measurement within the occupied time.
- the SRS bandwidth can be full bandwidth in the LBT transmission mode.
- the UE may immediately send the SRS on the preempted unlicensed carrier according to the SRS resource indication information configured by the last base station, and the SRS may be continuously repeated to be used as the occupation signal.
- the occupancy signal has two effects:
- One function can be used as an occupancy signal to indicate that the unlicensed resource has been occupied, and inform other base stations and which UE of the UE is the UE that preempts the unauthorized resource, so that other base stations cannot use the resource.
- the home base station can schedule data or send control information on the carrier of the unlicensed resource, so that the UE sends the SRS; or the UE of the same base station sends data on the carrier according to the scheduling information before the base station.
- Another effect is that the channel can be measured.
- the SRS unlicensed resource used as the occupied signal is a dedicated part, and all other base stations can receive the SRS as the occupied signal. Therefore, after receiving the SRS broadcast by the UE, the other base station knows that the unlicensed carrier has been occupied by other devices, and will not preempt the unauthorized resource in a subsequent period of time.
- the base station to which the UE belongs may use the unlicensed resources preempted by the UE to perform data scheduling, and on the other hand, may estimate the channel quality based on the received SRS, so as to The UE is assigned a suitable Modulation and Coding Scheme (MCS) when scheduling the carrier.
- MCS Modulation and Coding Scheme
- the measurement result can also be used to schedule downlink data.
- the LBT transmission mode does not need to consider the interference of multiple operators, and the SRS transmission mode increases the transmission opportunity and capacity expansion compared with the traditional LTE SRS transmission mode to ensure competition.
- the UE under the base station to the resource can perform measurement, and the base station performs uplink scheduling based on the measurement result or TDD uses channel dissimilarity as a multiple-input multiple-output (MIMO) transmission.
- MIMO multiple-input multiple-output
- the third type using LBT and non-LBT combination
- different operators perform pre-defined negotiation (or grouping), signaling, blind detection, or implicit mapping, and finally implement SRS of the UE of the neighboring cell through different OFDM symbol/subframe time division or Frequency division or code division multiplexing of non-authorized resources (ie, non-LBT mode); other times are still sent by LBT.
- the base station schedules based on the most recent measurement results.
- Cyclic transmission means that the non-LBT coordinated resources are used for transmission.
- the non-periodic transmission means that the transmission is increased by the competition, and the transmission opportunity is increased to meet the measurement requirements.
- the base station can perform reasonable uplink scheduling/resource allocation when competing for resources based on the measurement result, thereby improving spectrum efficiency. In addition, it also increases the chances of measurement and ensures competition.
- the UE under the base station to the resource can perform measurement, and the base station performs uplink scheduling based on the latest measurement result or TDD uses channel reciprocity for MIMO transmission.
- This embodiment describes a resource coordination method for data channels (PUSCH and PDSCH) on an unlicensed carrier.
- Data channels of different operators can coordinate unlicensed resources in one of the following ways:
- the unlicensed resources are divided into multiple segments according to the time domain, and the same carrier uses several consecutive or non-contiguous time segments; or
- the unlicensed resource is divided into multiple frequency segments according to the frequency domain, and the same operator uses several consecutive or non-contiguous frequency segments.
- the orthogonal code may be a PN code or a ZC root sequence.
- the base station of the first carrier broadcasts the unlicensed resources used by the data channel of the local cell through the common channel, such as which subframes, which carriers, the orthogonal codes used, and the base station of the second operator listens to the information, and then selects different Resource allocation is used for data channels.
- the specific resource indication may be in one of the following ways:
- Manner 1 Display the signaling mode, that is, directly use the resources to be carried through proprietary signaling and bit.
- the ZC root sequence of the preamble or reference signal is predefined to be associated with an unauthorized resource.
- a mapping relationship is established, where the preamble or reference signal can be sent as an occupied signal on an unlicensed carrier or a common channel.
- the non-authorized resources may be directly used in the manner of X2 interaction information negotiation.
- the following method may be used for resource allocation and transmission of PDSCH/PUSCH on an unlicensed resource:
- each subframe corresponds to a PDSCH/PUSCH of one UE, and PDSCH/PUSCH of different UEs are transmitted on different OFDM symbols or different subframes.
- the UEs of different operators may implement data transmission of different UEs in different subframes by using the LBT mode, and different UEs of the same base station may indicate subframe index by using base station scheduling signaling.
- each subframe or multiple subframes correspond to PDSCH/PUSCH of different UEs, and different UEs of different operators may multiplex non-authorized resources by frequency division.
- the third method the PDSCH/PUSCH of multiple UEs are simultaneously transmitted on the same unlicensed carrier, and the users of different operators are distinguished by different orthogonal codes or non-orthogonal codes (NOMA).
- NOMA non-orthogonal codes
- the UEs may belong to the same or different operators, and the specific resource locations may be indicated by the DCI of the base station.
- a DCI can simultaneously indicate the transmission mode of multiple subframes of a certain UE, that is, adopt a multi-subframe scheduling manner, or one DCI simultaneously indicates a transmission manner of multiple UEs, that is, scheduling information of multiple UEs is jointly encoded.
- the DCI can be sent on an authorized carrier or an unlicensed carrier.
- This embodiment describes a manner in which a UE uses an LBT and a non-LBT combination on an unlicensed carrier.
- the transmission mode using LBT and non-LBT combination means on the one hand, the UE can follow the base station
- the non-LBT mode is configured to send uplink signals, such as SRS, PRACH, etc.
- the UE can also send the uplink physical channel or signal directly on the preempted unlicensed carrier, that is, in the LBT mode.
- an SRS or a preamble PRACH can be immediately sent on the carrier.
- the transmitted uplink signal can indicate that the carrier is already occupied, and is prevented from being used by others.
- the UE or the base station snatches away, and on the other hand, by listening to the sequence of the uplink signal, other UEs or base stations can know which base station of the operator has seized the resource, and implicitly obtain the corresponding PRACH and SRS of the base station to which the UE belongs.
- the set is configured; then the base stations of different operators will configure different resources for neighboring cells to avoid interference.
- the UE under the same base station can also perform data transmission on the resource under the scheduling of the base station.
- the UE that contends to the unlicensed carrier resource can transmit the PUSCH, or the PUCCH and the DMRS on the carrier according to the scheduling information previously sent by the base station.
- the channel may be a full-bandwidth mapping, or may be sent on an unlicensed carrier by multiple UEs in accordance with current LTE regulations using FDM.
- the base station when transmitting in the LBT manner, the base station needs to notify the UE of the scheduling information through the DCI before the UE competes for the resource.
- the UEs of different operators may simultaneously transmit PUSCH, PUCCH, PRACH, or SRS on the unlicensed carrier by frequency division or code division.
- the unlicensed resources are divided, one part is sent by LBT, and the other part is sent by non-LBT.
- the pre-defined all the unlicensed resources are divided, a part of the base station for competing to the unlicensed resource configures the unlicensed resource of the UE of the cell (LBT mode), and the other part is used for the UE under the base station that does not compete for the unlicensed resource. Use (non-LBT way).
- the divided unlicensed resources may be time domain resources or frequency domain resources.
- the UE sends uplink data or receives downlink data on the corresponding unlicensed carrier at the corresponding time according to the received indication.
- the UE can ensure that the non-authorized opportunity is equalized, and on the other hand, the interference can be suppressed, and the data transmission or measurement time is expanded.
- This embodiment describes resource coordination when each channel is transmitted by an unlicensed carrier.
- the unlicensed carrier is used for the uplink transmission: if the PRACH and the SRS of the same UE are simultaneously transmitted on the same unlicensed resource, the UE needs to abandon the transmission of the SRS to avoid interference to the PRACH; if the PUCCH of the same UE occurs
- the SRS is simultaneously transmitted on the same unlicensed carrier, and the UE also needs to abandon the SRS transmission or adopt a PUCCH truncation structure.
- the SRS transmission is compensated by other occupied signals or dynamically triggered transmission methods or channel detection by DMRS instead of SRS to complete channel measurement on the unlicensed carrier.
- different symbol time divisions can be predefined.
- the frame structure shown in FIG. 8 may be used, and the PDCCH, PDSCH, and other uplink channels or signals are transmitted in a time division manner, and the SRS, CRS, and DRS are usually in a clean channel.
- the uplink subframe is used to transmit the PRACH or the PUSCH, and the downlink subframe is used to transmit the PDCCH or the ePDCCH or the PDSCH.
- Transmission over a plurality of channel unlicensed carriers is achieved by the channel coordination method described above.
- This embodiment describes a specific process of the unlicensed carrier coordination and data sending method from the base station side. As shown in FIG. 9, the process mainly includes the following steps:
- Step 901 The base station selects an unlicensed carrier to perform data scheduling transmission.
- Step 902 The base station determines whether the resource needs to be first listened for resource competition, and if yes, step 903 is performed; otherwise, step 905 is performed;
- Step 903 The base station itself or triggering the subordinate UE to perform resource competition
- Step 904 After competing for resources, send data on the unlicensed carrier that is contending;
- Step 905 Perform data transmission or reception at a coordinated time or with coordinated code scrambling according to the result of resource coordination.
- resource coordination is a static, semi-static or dynamic way.
- the static mode is: different operators negotiate or allocate fixed non-authorized resources.
- the semi-static mode is: the base station broadcasts the unlicensed resource indication information used by the local cell to other base stations through the common channel, so that other base stations select different unlicensed resources.
- the dynamic mode is: the base station indicates the unlicensed resource of the local cell by using the occupied signal or the physical signaling, and the other base station selects different unlicensed resources according to the information.
- This embodiment describes the process of unlicensed carrier coordination and data transmission from the UE side. As shown in FIG. 10, the process mainly includes the following steps:
- Step 1001 The UE receives signaling sent by the base station.
- the received signaling is unauthorized resource preemption indication signaling or scheduling signaling, or unlicensed resource configuration signaling of a physical channel or signal.
- Step 1002 The UE determines, according to the signaling, whether the non-authorized resource needs to be contending, if yes, step 1003 is performed; otherwise, step 1005 is performed;
- Step 1003 The UE performs resource competition on the corresponding unlicensed carrier according to the signaling indication.
- resource preemption signaling may also be indicated by scheduling signaling.
- the base station sends resource preemption signaling at time N, and the signaling is carried through the RRC proprietary message bearer or directly through the UL grant bearer, or implicitly indicated by the PHICH channel.
- the UE After receiving the signaling, the UE starts resource competition after the N time, that is, clean channel estimation. If the channel is idle or contending for resources, the UE immediately sends an occupation signal to occupy the channel to prevent being blocked by other base stations. Or the UE snatches, the occupied signal is an SRS, or a preamble or other ZC sequence or a PN sequence, and the sequence corresponds to the cell ID one by one. After receiving the message, other base stations or UEs can know which cell competes for the resource. .
- the resource base station that the UE preempts can be used to send downlink data. In this case, the UE needs to receive the downlink data sent by the base station through blind detection.
- Step 1004 After competing for resources, send or receive data on the unlicensed resources that are competing;
- the UE may transmit data after the unlicensed carrier and the corresponding primary carrier are aligned.
- Step 1005 Send a physical channel or signal on a corresponding unlicensed carrier at a corresponding moment according to the configuration signaling.
- the embodiment provides a base station.
- the base station includes: an obtaining unit 111 and a broadcasting unit 112;
- the acquiring unit 111 is configured to acquire an unlicensed resource used by the local cell.
- the broadcast unit 112 is configured to broadcast the unlicensed resource configuration information of the local cell to other base stations, so that the other base station can determine the unlicensed resource configuration of the own cell according to the unlicensed resource configuration information of the local cell.
- the obtaining unit 111 is specifically configured to obtain the unlicensed resource used by the cell by means of resource contention; or
- the right resource acquires the unauthorized resources used by the community.
- the non-authorized resource used by the cell is obtained by using the contention in a competitive manner, specifically:
- the UE itself or the subordinate UE performs resource competition on the set unlicensed carrier to obtain the unlicensed resource used by the local cell.
- the subordinate UE may be a UE in an idle state, a UE that receives a scheduling request, or a UE that is allowed to be scheduled.
- the base station or the subordinate UE can directly transmit signals or channels on the coordinated resources without performing a clean channel estimation process.
- all the unlicensed resources can be divided into two parts, and some of them are resources shared by all the cells. This part of the resources requires the base station to obtain the unlicensed resources used by the cell through resource competition; the other part is not The resources shared by all the cells, which need the base station to obtain the unlicensed resources used by the cell by means of coordination with other base stations.
- the division of unlicensed resources can be divided according to network needs.
- the pre-coordination with the other base stations, and the pre-defined unlicensed resources that are obtained by the coordination are used as the non-authorized resources used by the local cell, and specifically includes:
- All unlicensed resources may be grouped or set to different sets, and the unlicensed resources included in each group or set are all orthogonal or partially orthogonal, so that interference can be effectively avoided; by adopting a group or a set different from other cells , obtain the unauthorized resources used by the community.
- the acquiring the non-authorized resources used by the local cell by using a group or a set different from the other cells specifically includes:
- the unlicensed resource used by the local cell is obtained by listening to the common channel or the unlicensed resource group or the set indication information used by other cells that are occupied by the signal.
- Each radio frame or period T is initialized once, and k is a subframe or a change period T.
- the hash function is associated with a cell ID and a time slot; the random sequence is a sequence having an irrelevance, such as an m sequence, a gold sequence, and the like.
- the obtaining the usage information of the non-authorized resources of the other cell includes:
- the usage indication information of the unlicensed resources of other cells is obtained through the air interface PBCH or the system message.
- the usage information of the unlicensed resource of the other cell may be obtained by displaying a signaling bearer or by a mapping relationship between a sequence and an unlicensed resource.
- the unlicensed resource configuration of the current cell may include one or more of a time domain resource, a frequency domain resource, and a code domain resource configuration.
- the broadcasted non-authorized resource configuration information may include: a time domain resource and a frequency domain.
- the broadcast unlicensed resource configuration information is the unlicensed resource configuration information of the SRS and/or the PRACH;
- the unlicensed resource configuration information of the broadcasted SRS is all or part of the information of the existing SRS resource configuration, or is the symbol resource configuration information of the newly added SRS;
- the unlicensed resource configuration information of the broadcasted PRACH is all or part of the information of the existing PRACH resource configuration, or is the newly added PRACH sequence resource configuration information.
- the unlicensed resource is used to transmit a physical channel or signal.
- the information sent by using the unlicensed resource may include: one or more of a PRACH preamble sequence, an SRS, a PUSCH, a PUCCH, a DMRS, a CRS, a CSI-RS, a PRS, a DRS, a PDCCH, and a PDSCH, or other A channel or signal that is measured synchronously.
- the unlicensed resource configuration information when transmitting a plurality of channels or signals, may indicate a part of the transmitted channels or signals (one or more), and for another part of the channels or Signals, other base stations can be determined by other signals or channels received.
- the broadcast unit 112 is specifically configured to: broadcast the unlicensed resource configuration information of the local cell by using an unlicensed common channel, a PBCH, or an occupied signal.
- the unlicensed resource configuration information of the local cell is broadcasted by using the unlicensed common channel, and specifically includes:
- the frequency domain location where the unlicensed common channel is located maps the unlicensed resource configuration information; the frequency domain location corresponds to the unlicensed resource configuration information; or
- mapping by the sequence sent by the unlicensed common channel, the unlicensed resource configuration information; the sequence is in one-to-one correspondence with the unlicensed configuration information; or
- the non-authorized resource configuration information is mapped by the sequence sent by the unlicensed common channel, in other words, pre-defined according to a predefined period on the unlicensed common channel.
- the transmitted sequence is transmitted on the first few OFDM symbols of the channel when transmitted on some unlicensed carriers.
- the transmitted sequence can be transmitted in the first one, the first two or the first three OFAMs of the channel.
- the occupancy signal may, on the one hand, characterize the preemption to the unlicensed resource; on the other hand, may represent the unlicensed resource configuration information of the local cell.
- the occupancy signal may be in one-to-one correspondence with the unlicensed resource configuration information.
- the root sequence of the occupied signal may be the same as the root sequence of the transmitted reference signal.
- the cyclic shift of the occupied signal may indicate the number of subframes in which the own cell occupies an unlicensed resource to transmit a data channel.
- the pattern of the occupancy signal may indicate the format and period of the PRACH channel and/or the symbol index of the SRS.
- the other base stations include: base stations of different operators and base stations of the same carrier.
- the non-authorized resource configuration information may be directly exchanged through X2 for interference coordination of the unlicensed resources.
- the base station may further include: a configuration information notification unit configured to notify the subordinate UE of the unlicensed resource configuration information by using a common channel, a PBCH, a physical signaling, or an occupied signal mapping manner.
- a configuration information notification unit configured to notify the subordinate UE of the unlicensed resource configuration information by using a common channel, a PBCH, a physical signaling, or an occupied signal mapping manner.
- the physical signaling includes a system message, and specifically may be a DCI or an RRC message.
- the base station may further include: a data sending unit configured to send a channel or a signal on the unlicensed resource corresponding to the unlicensed resource configuration information.
- the obtaining unit 111 may be a central processing unit (CPU), a microprocessor (MCU, a Micro Control Unit), a digital signal processor (DSP), or a programmable logic array (A FPGA (Field-Programmable Gate Array) is implemented in conjunction with a transceiver; the broadcast unit 112, the configuration information notification unit, and the data transmission unit may be implemented by a transmitter in the base station.
- CPU central processing unit
- MCU microprocessor
- DSP digital signal processor
- FPGA Field-Programmable Gate Array
- the broadcast unit 112 the configuration information notification unit
- the data transmission unit may be implemented by a transmitter in the base station.
- Manner 1 The LBT mechanism is completely adopted, that is, the base station or the UE needs to perform interception or resource competition before transmitting data, and only the base station and/or the UE under the base station whose resources are idle or compete for unlicensed resources can be detected on the unlicensed carrier. send Message.
- Manner 2 The LBT mechanism is not followed, that is, the base station or the UE does not need to listen to the unlicensed carrier or perform resource competition to send data according to the predefined coordinated unlicensed resource.
- a PUCCH for a PUSCH, a PUCCH, a DMRS, a PDCCH, and a PDSCH, different base stations adopt mode 1 to transmit on an unlicensed carrier.
- different base stations use mode 2 or mode 3 to transmit on an unlicensed carrier.
- the above-mentioned synchronization channel or measurement signal can also be transmitted on a channel that can be directly used without performing resource contention or a clean channel estimation process.
- the neighboring cells can be configured with different PRACH and SRS resources through negotiation through wired or air interface signaling or X2 interface.
- the coordination mode of the two base stations of the same carrier is preferably used. Otherwise, the non-authorized resources may be configured for the two adjacent cells in the following manner:
- Manner 1 The first base station sends a resource configuration indication information of the local cell through the common channel on the unlicensed carrier, and the second base station selects and configures different resources of the local cell, such as different OFDM symbols, after detecting the indication information. Or different sub-frame patterns, or different periods or offsets, or different frequency bands, different codes, and the like.
- the common channel is sent on a preset unlicensed carrier according to a preset period.
- Manner 2 The base station learns that other cells are not authorized by receiving the occupation signal sent by other cells.
- the resource usage indication information is selected to configure different resources of the cell.
- Manner 3 The base station directly detects the resource configuration signaling sent by the other base station to the UE through the air interface physical broadcast channel or the system message, and obtains the use indication information of the unlicensed resource of the other cell, and then selects different resource configurations for the local cell.
- the corresponding unlicensed resource may be implicitly obtained by listening to the preamble sequence or the reference signal sent by the other base station or other subordinate UEs.
- the sequence may be pre-agreed with the resource, and then the different resources are configured to be allocated to the local cell.
- Manner 4 The non-authorized resources PRACH and SRS are grouped in advance. As shown in FIG. 3, the packets may be divided into only a certain time domain, a frequency domain, or a code domain, or all time-frequency and sequence may be separated. The domain is uniformly divided, and different resources of the cell are configured according to the packet selection.
- the first M bars of the predefined preamble sequence correspond one-to-one with the large set index.
- the first base station or the subordinate UE transmits a preamble sequence or a cyclic shift of the sequence on a common channel of the unlicensed carrier, and the other base station or the UE can know the resource large set index corresponding to the operator by listening to the sequence, and then According to the large set index of these resources, it is selected to configure different resources of the local cell.
- the preamble sequence may also be sent on a resource that uses the LBT, that is, the base station or the UE that contends to the resource transmits the preamble sequence on the unlicensed carrier that is contending, and is used as an occupation signal to prevent other base stations from using the resource.
- the UE under the base station or the base station can use the resource after detecting the preamble, and is used to indicate the PRACH or SRS used by the base station or the operator.
- the base stations of other operators should select different sets to configure for the subordinate UEs.
- the neighboring cells of different base stations of the same operator use different unlicensed resources through air interface interaction negotiation, or determine the used resource subset index by using a random number generated by a function or a random sequence.
- the base station notifies the coordinated cell resource configuration information to other base stations through a common channel or an occupation signal, and notifies the UE by using a system message, a physical broadcast channel, control signaling, or an RRC message.
- the unlicensed resource configuration may include at least one of an OFDM symbol index, a slot index, a period, an offset, a PRB index and number, a sequence index, a cyclic shift, and a comb.
- the embodiment further provides a UE.
- the UE includes: a receiving unit 121 and an executing unit 122.
- the receiving unit 121 is configured to receive signaling sent by the base station
- the executing unit 122 is configured to perform resource contention on the corresponding unlicensed carrier according to the signaling, or send a physical channel or signal on the corresponding unlicensed resource.
- the signaling may be resource preemption signaling or unlicensed resource configuration signaling.
- the execution unit 122 is specifically configured to: when the signaling is resource preemption signaling, perform resource competition on the corresponding unlicensed carrier; when the signaling is unlicensed resource configuration signaling, according to the non-authorization The unconfigured resource configuration information corresponding to the resource configuration signaling, and the physical channel or signal is sent on the corresponding unlicensed resource.
- the resource preemption signaling may be implemented in at least one of the following: a scheduling signaling indication, a NACK information indication, and a defined RRC message bearer.
- the unlicensed resource configuration information may be carried by a common channel, an occupation signal, a PBCH, or a physical signaling.
- all unlicensed resource configuration information corresponding to the physical channel or signal may be pre-defined into the first part, the second part, and the third part according to requirements;
- all the unlicensed resource configuration information corresponding to the physical channel or the signal includes a preset first partial unlicensed resource configuration information, a second partial unlicensed resource configuration information, and a third partial unlicensed resource configuration information;
- the first part of the unlicensed resource configuration information is carried by the PBCH, and the third part of the unlicensed resource configuration information is carried by the physical signaling.
- the physical signaling may be: an RRC message or a DCI, and the physical signaling may be sent on an authorized or unlicensed carrier.
- the unlicensed resource configuration information when the unlicensed resource configuration information is a resource location of the data channel indicated by the DCI, the unlicensed resource configuration information indicates a resource location of a data channel of the multiple subframes.
- the unlicensed resource configuration information may include at least one of an OFDM symbol index, a slot index, a period, an offset, a PRB index and number, a sequence index, a cyclic shift, and a comb.
- the executing unit 122 sends a physical channel or signal on the unlicensed resource by one of TDM, FDM, CDM, or a different resource group according to the unlicensed resource configuration information.
- the unlicensed resource may include two parts, one part is obtained by the base station to which the UE belongs or the UE itself or other UEs of the same base station, and the other part is negotiated by the base station to which the UE belongs and other base stations.
- the executing unit 122 is further configured to: immediately send the SRS, the PRACH preamble sequence, or the first N symbols, the ZC sequence, and the PN sequence of the uplink data after the content is contending for the corresponding unlicensed carrier; Where N is a positive integer less than or equal to 6.
- the physical channel or signal adopts a full bandwidth mapping manner.
- the receiving unit 121 may be implemented by a receiver in a UE, and the executing unit 122 may be implemented by a CPU, an MCU, a DSP, or an FPGA in a UE in combination with a receiver.
- the embodiment further provides a system for using an unlicensed resource.
- the system includes: a first base station 131 and one or more second base stations 132;
- the first base station 131 is configured to acquire the unlicensed resource used by the local cell, and broadcast the unlicensed resource configuration information of the local cell to the second base station, so that the second base station may be according to the first base station 131. Unauthorized resource configuration information to determine the unlicensed resource configuration of the own cell.
- the second base station 132 is configured to receive the unlicensed resource configuration information broadcast by the first base station 131.
- the second base station 132 and the first base station 131 may belong to the same operator, or may belong to different operators.
- the system may further include a UE configured to receive signaling sent by the first base station 131, and perform resource contention on a corresponding unlicensed carrier according to the signaling, or send a physical channel on a corresponding unlicensed resource or signal.
- a UE configured to receive signaling sent by the first base station 131, and perform resource contention on a corresponding unlicensed carrier according to the signaling, or send a physical channel on a corresponding unlicensed resource or signal.
- the base station acquires the unlicensed resource used by the local cell, and broadcasts the unlicensed resource configuration information of the local cell to the other base station, so that the other base station can determine the own cell according to the unlicensed resource configuration information of the local cell.
- the non-authorized resource configuration the UE receives the signaling sent by the base station; according to the signaling, performs resource contention on the corresponding unlicensed carrier, or sends a physical channel or signal on the corresponding unlicensed resource, thus, the LTE can be solved.
- the resource coordination problem when each cell sends a physical channel or signal under the premise of interference coordination/avoidance, the base station or UE of different operators of different operators can perform data on the unlicensed carrier. Sending improves spectrum efficiency.
- embodiments of the present invention can be provided as a method, system, Or a computer program product. Accordingly, the present invention can take the form of a hardware embodiment, a software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
- an embodiment of the present invention further provides a computer storage medium, where the computer storage medium includes a set of instructions, when executed, causing at least one processor to execute an unlicensed resource usage method on the base station side, or The method for using the unlicensed resource on the UE side is performed.
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Abstract
本发明公开了一种非授权资源使用方法,包括:基站获取本小区所使用的非授权资源;向其它基站广播本小区的非授权资源配置信息,以使所述其它基站根据所述本小区的非授权资源配置信息,确定自身小区的非授权资源配置。本发明同时还公开了一种、基站、用户设备(UE)、非授权资源使用***及计算机存储介质。
Description
本发明涉及无线通信技术,尤其涉及一种非授权资源使用方法、***、基站、用户设备(UE,User Equipment)及计算机存储介质。
非授权载波具有:费用低、准入要求低,成本低、能协调资源、支持的无线接入技术多、无线接入站点多、应用多等特点,因此,成为研究的热点。
在长期演进(LTE,Long Term Evolution)的演进过程中,在LTE Rel-13版本的研究中,一个重要内容就是LTE***使用非授权载波工作。这项技术将使得LTE***能够使用目前存在的非授权载波,大大提升LTE***的潜在频谱资源,使得LTE***能够获得更低的频谱成本。
但是LTE***利用非授权载波将会面临诸多问题,包括:在非授权载波工作,LTE***的一些信号或信道的传输是必须的。比如物理随机接入信道(PRACH,Physical Random Access Channel)作定时同步,信道探测参考信号(SRS,Sounding Reference Signal)和小区专属参考信号(CRS,Cell-specific Reference Signals)传输对非授权载波信道质量进行测量,以及上下行控制信道和数据信道的传输等。但这些信道或信号的传输资源,都是多个运营商的多个小区共享的,如果基站之间不作资源协调,就会出现多个小区使用相同资源发送而产生的碰撞或强干扰问题。因此,多个运营商多个用户或基站之间非授权载波上LTE物理信道或信号的资源如何协调是目前亟待解决的问题。
发明内容
为解决现有存在的技术问题,本发明实施例提供一种非授权资源使用方法、***、基站、UE及计算机存储介质。
本发明实施例提供了一种非授权资源使用方法,应用于基站,包括:
获取本小区所使用的非授权资源;
向其它基站广播本小区的非授权资源配置信息,以使所述其它基站根据所述本小区的非授权资源配置信息,确定自身小区的非授权资源配置。
上述方案中,所述获取本小区所使用的非授权资源,包括:
通过资源竞争的方式获得本小区所使用的非授权资源;或者,
与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,
获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授权资源,获取本小区所使用的非授权资源。
上述方案中,所述通过竞争的方式获得本小区所使用的非授权资源,为:
自身或触发下属UE在设置的非授权载波上进行资源竞争,以获得本小区所使用的非授权资源。
上述方案中,所述与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源,包括:
通过采用不同的正交频分复用(OFDM,Orthogonal Frequency Division Multiplexing)符号、不同时隙、不同子帧同样、不同周期和/或偏置时分、不同非授权频带频分、不同序列码分方式中的任意一种,获取本小区所使用的非授权资源;或者,
将所有非授权资源分组或设置不同的集合,各组或集合包含的非授权资源全部正交或部分正交;通过采用不同于其它小区的组或集合的方式,
获取本小区所使用的非授权资源。
上述方案中,所述通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源,包括:
根据预先配置的小区和组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过哈希函数或随机序列生成的随机数,结合函数或随机数与组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过侦听公共信道或占用信号承载的其它小区使用的非授权资源组或集合指示信息,获取本小区所使用的非授权资源。
上述方案中,所述获取其它小区非授权资源的使用信息,包括:
通过盲检获取其它小区非授权资源的使用信息;或者,
通过侦听非授权公共信道上其它基站发送的非授权资源使用的相关信息,获知其它小区非授权资源的使用信息;或者,
通过接收其他小区发送的占用信号,获知其它小区非授权资源的使用信息;或者,
通过空口物理广播信道(PBCH,Physical Broadcast Channel)或***消息,获知其它小区非授权资源的使用指示信息。
上述方案中,所述其它小区非授权资源的使用信息通过显示信令承载或者通过序列和非授权资源的映射关系得到。
上述方案中,所述向其它基站广播本小区的非授权资源配置信息,为:
通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
上述方案中,所述通过非授权公共信道广播本小区的非授权资源配置信息,包括:
直接将所述非授权资源配置信息通过所述非授权公共信道承载;或者,
所述非授权公共信道所在的频域位置映射所述非授权资源配置信息;频域位置与非授权资源配置信息一一对应;或者,
通过所述非授权公共信道发送的序列映射所述非授权资源配置信息;序列与非授权配置信息一一对应;或者,
通过所述非授权公共信道传输的预设的参考信号的图样,传输所述非授权资源配置信息。
上述方案中,所述占用信号具有以下至少一种特性:
所述占用信号与所述非授权资源配置信息一一对应;
所述占用信号的根序列与发送参考信号的根序列相同;
所述占用信号循环移位指示本小区占用非授权资源发送数据信道的子帧数目;
所述占用信号的图样指示物PRACH信道的格式及周期、和/或SRS的符号索引。
上述方案中,所述其它基站包括:与广播本小区非授权资源配置信息的基站不同运营商的基站、以及与广播本小区非授权资源配置信息的基站相同运营商的基站。
上述方案中,广播的所述非授权资源配置信息包括:时域资源、频域资源、码域资源配置信息中一种或多种。
上述方案中,广播的所述非授权资源配置信息为SRS和/或PRACH的非授权资源配置信息。
上述方案中,广播的SRS的非授权资源配置信息为已有的SRS资源配置的全部或者部分信息,或者为新增的SRS的符号资源配置信息。
上述方案中,广播的PRACH的非授权资源配置信息为已有的PRACH资源配置的全部或部分信息,或者为新增的PRACH序列资源配置信息。
上述方案中,所述方法还包括:
通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
上述方案中,所述物理信令为下行控制信息(DCI,Downlink Control Information)、或为无线资源控制(RRC,Radio Resource Control)消息。
上述方案中,所述方法还包括:
在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
本发明实施例还提供了一种非授权资源使用方法,应用于UE,包括:
接收基站发送的信令;
根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
上述方案中,当所述信令为资源抢占信令时,所述资源抢占信令通过以下至少一种方式实现:调度信令指示、NACK信息指示、定义的RRC消息承载。
上述方案中,当所述信令为非授权资源配置信令时,所述非授权资源配置信息通过公共信道、占用信号、PBCH或者物理信令承载。
上述方案中,所述物理信道或信号对应的所有非授权资源配置信息包含预设的第一部分非授权资源配置信息、第二部分非授权资源配置信息以及第三部分非授权资源配置信息;其中,所述第一部分非授权资源配置信息通过公共信道或者占用信号承载,所述第二部分非授权资源配置信息通过PBCH承载,所述第三部分非授权资源配置信息通过物理信令承载。
上述方案中,所述物理信令为:RRC消息、或为DCI。
上述方案中,所述信令为非授权资源配置信令;所述根据所述信令,在相应非授权载波上发送物理信道或信号,包括:
根据非授权资源配置信息,通过时分复用(TDM,Time Division Multiplexing)、频分复用(FDM,Frequency Division Multiplexing)、码分复
用(CDM,Code Division Multiplexing)或者不同资源组的方式之一在非授权资源上发送物理信道或信号。
上述方案中,所述物理信道或信号采用全带宽映射方式。
上述方案中,在对应的非授权载波上竞争到资源后,所述方法还包括:
立即发送SRS、PRACH前导序列、或者重复发送上行数据的前N个符号、ZC序列,PN序列中的一种;N为小于等于6的正整数。
本发明实施例又提供了一种基站,包括:获取单元以及广播单元;其中,
所述获取单元,配置为获取本小区所使用的非授权资源;
所述广播单元,配置为向其它基站广播本小区的非授权资源配置信息,以使所述其它基站根据所述本小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
上述方案中,所述获取单元,配置为:通过资源竞争的方式获得本小区所使用的非授权资源;或者,
与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,
获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授权资源,获取本小区所使用的非授权资源。
上述方案中,所述广播单元,配置为:通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
上述方案中,所述基站还包括:配置信息通知单元,配置为通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
上述方案中,所述基站还包括:数据发送单元,配置为在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
本发明实施例还提供了一种UE,包括:接收单元以及执行单元;其中,
所述接收单元,配置为接收基站发送的信令;
所述执行单元,配置为根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
上述方案中,所述执行单元,还配置为在对应的非授权载波上竞争到资源后,立即发送SRS、前导序列、或者重复发送上行数据的前N个符号、ZC序列,PN序列中的一种;N为小于等于6的正整数。
本发明实施例又提供了一种非授权资源使用***,包括:第一基站及一个以上第二基站;其中,
所述第一基站,配置为获取本小区所使用的非授权资源;向所述第二基站广播本小区的非授权资源配置信息,以使所述第二基站根据所述第一基站小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
所述第二基站,配置为接收所述第一基站广播的非授权资源配置信息。
上述方案中,所述***还包括:UE,配置为接收所述第一基站发送的信令;并根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
本发明实施例还提供了一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行上述基站侧的非授权资源使用方法,或者执行上述UE侧的非授权资源使用方法。
本发明实施例提供的非授权资源使用方法、***、基站、UE及计算机存储介质,基站获取本小区所使用的非授权资源;并向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置;而UE接收基站发送的信令;根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号,如此,能在干扰协调/避免的前提下,实
现不同运营商不同小区的基站或均可以在非授权载波上进行数据发送,提高了频谱效率。
在附图(其不一定是按比例绘制的)中,相似的附图标记可在不同的视图中描述相似的部件。具有不同字母后缀的相似附图标记可表示相似部件的不同示例。附图以示例而非限制的方式大体示出了本文中所讨论的各个实施例。
图1为本发明实施例一一种非授权资源的使用方法流程示意图;
图2为本发明实施例一非授权资源划分示意图;
图3为本发明实施例一非授权资源分组示意图;
图4为本发明实施例一另一种非授权资源的使用方法流程示意图;
图5为本发明实施例二PRACH对应的资源划分示意图;
图6为本发明实施例三SRS对应资源不同校区符号时分示意图;
图7为本发明实施例四不同UE复用非授权资源示意图;
图8为本发明实施例六上下行子帧示意图;
图9为本发明实施例七基站侧非授权载波协调及数据发送方法流程示意图;
图10为本发明实施例八UE侧非授权载波协调及数据发送方法流程示意图;
图11为本发明实施例九基站结构示意图;
图12为本发明实施例九UE结构示意图;
图13为本发明实施例九非授权资源使用***结构示意图。
下面结合附图及实施例对本发明再作进一步详细地描述。
描述本发明实施例之前,先详细了解一下非授权载波所具有的特征。非授权载波具有以下特征:
1、免费/低费用:不需要购买非授权频谱,频谱资源为零成本。
2、准入要求低,成本低:个人、企业都可以参与部署,设备商的设备可以任意部署。
3、能协调资源:多个不同***都运营其中时,或者同一***的不同运营商运营其中时,可以考虑一些协调资源的方式,提高频谱效率。
4、支持的无线接入技术多:可以使用不同的通信标准,但协作难度大,网络拓扑多样。
5、无线接入站点多:用户数量大,但协作难度大,集中式管理开销大。
6、应用多:多种业务可以在其中运营,例如:机器到机器(M2M,Machine to machine)业务、汽车到汽车(V2V,Vehicle to vehicle)业务等。
在LTE***中使用非授权载波,能够大大提升LTE***的潜在频谱资源,使得LTE***能够获得更低的频谱成本。当LTE***利用非授权载波工作时,由于一些信号或信道的传输时必须的,而这些信道或信号的传输资源,都是多个运营商的多个小区共享的,如果基站之间不作非载波频谱资源协调,就会出现多个小区使用相同资源发送而产生的碰撞或强干扰问题。因此,多个运营商多个用户或基站之间非授权载波上LTE物理信道或信号的资源如何协调是目前亟待解决的问题。
而针对上述LTE***多个运营商非授权频段各个具体物理信道或信号的资源协调问题,以及基站或用户之间的干扰避免问题,目前尚未有详细具体的解决方案。
基于此,在本发明的各种实施例中:获取本小区所使用的非授权资源;向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
实施例一
本实施例提供了一种非授权资源的使用方法,应用于基站,如图1所示,该方法包括以下步骤:
步骤101:获取本小区所使用的非授权资源;
具体地,通过资源竞争的方式获得本小区所使用的非授权资源;或者,
与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,
获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授权资源,获取本小区所使用的非授权资源。
其中,所述通过竞争的方式获得本小区所使用的非授权资源,具体为:
自身或触发下属UE在设置的非授权载波上进行资源竞争,以获得本小区所使用的非授权资源。
这里,所述下属UE可以是空闲态的UE、接收到调度请求的UE、或者被允许调度的UE。
后两种方式下,基站或下属UE可以直接在协调好的资源上发送信号或信道,而无需执行干净信道评估过程。
这里,实际应用时,可以将所有的非授权资源划分为两部分,一部分为所有小区共享的资源,这部分资源需要基站通过资源竞争的方式获得本小区所使用的非授权资源;另一部分为不是所有小区共享的资源,这部分资源需要基站通过与其它基站协调的方式获得本小区所使用的非授权资源。其中,非授权资源的划分可以根据网络需要来划分。
所述与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源,具体包括:
通过采用不同的OFDM符号、不同时隙、不同子帧同样、不同周期和/或偏置时分、不同非授权频带频分、不同序列码分方式中的任意一种,获
取本小区所使用的非授权资源;或者,
可以将所有非授权资源分组或设置不同的集合,各组或集合包含的非授权资源全部正交或部分正交,如此,能有效地避免干扰;通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源。
其中,所述通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源,具体包括:
根据预先配置的小区和组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过哈希(hash)函数或随机序列生成的随机数,结合函数或随机数与组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过侦听公共信道或占用信号承载的其它小区使用的非授权资源组或集合指示信息,获取本小区所使用的非授权资源。
这里,所用的函数类似如下之一的形式:
所述hash函数与小区ID及时隙相关;所述随机序列为具有不相关性的序列,比如m序列、gold序列等。
所述获取其它小区非授权资源的使用信息,具体包括:
通过盲检获取其它小区非授权资源的使用信息;或者,
通过侦听非授权公共信道上其它基站发送的非授权资源使用的相关信息,获知其它小区非授权资源的使用信息;或者,
通过接收其他小区发送的占用信号,获知其它小区非授权资源的使用信息;或者,
通过空口PBCH或***消息,获知其它小区非授权资源的使用指示信
息。
其中,所述其它小区非授权资源的使用信息可以通过显示信令承载或者通过序列和非授权资源的映射关系得到。
步骤102:向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
这里,本小区的非授权资源配置可以包括时域资源、频域资源、码域资源配置中的一种或多种;相应地,广播的所述非授权资源配置信息可以包括:时域资源、频域资源、码域资源配置信息中一种或多种。实际应用时,广播的非授权资源配置信息为SRS和/或PRACH的非授权资源配置信息;其中,
广播的SRS的非授权资源配置信息为已有的SRS资源配置的全部或者部分信息,或者为新增的SRS的符号资源配置信息;
广播的PRACH的非授权资源配置信息为已有的PRACH资源配置的全部或部分信息,或者为新增的PRACH序列资源配置信息。
所述非授权资源用于传输物理信道或信号。
其中,使用所述非授权资源发送的信息可以包括:PRACH前导序列、SRS,物理上行共享信道(PUSCH,Physical Uplink Shared Channel)、物理上行链路控制信道(PUCCH,Physical Uplink Control CHannel)、解调参考信号(DMRS,De Modulation Reference Signal)、CRS、信道状态指示参考信号(CSI-RS,Channel State Indication-Reference Signal)、定位参考信号(PRS,Positioning reference signals)、解调参考信号(DRS,Dedicated Reference Signal)、物理下行链路控制信道(PDCCH,Physical Downlink Control CHannel)、物理下行共享信道(PDSCH,Physical Downlink Shared Channel)中的一个或多个,或者其它用于同步测量的信道或信号。
相应地,实际应用时,当发送多个信道或信号时,所述非授权资源配置信息可以指示发送的多个信道或信号中的一部分(一个或多个),而对于发送的另一部分信道或信号,其它基站可以通过接收的其它信号或信道来确定。
所述向其它基站广播本小区的非授权资源配置信息,具体为:
通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
其中,所述通过非授权公共信道广播本小区的非授权资源配置信息,具体包括:
直接将所述非授权资源配置信息通过所述非授权公共信道承载;或者,
所述非授权公共信道所在的频域位置映射所述非授权资源配置信息;频域位置与非授权资源配置信息一一对应;或者,
通过所述非授权公共信道发送的序列映射所述非授权资源配置信息;序列与非授权配置信息一一对应;或者,
通过所述非授权公共信道传输的预设的参考信号的图样,传输所述非授权资源配置信息。
其中,通过所述非授权公共信道发送的序列映射所述非授权资源配置信息时,换句话说,在所述非授权公共信道上按照预定义的周期在预定义的某些非授权载波上发送时,所述发送的序列在信道的前几个OFDM符号发送。这里,实际应用时,发送的序列可以在信道的前1个、前2个或前3个OFAM发送。
所述占用信号,一方面可以表征抢占到非授权资源;另一方面可以表征本小区的非授权资源配置信息。
所述占用信号可以与所述非授权资源配置信息一一对应。
所述占用信号的根序列可以与发送参考信号的根序列相同。
所述占用信号循环移位可以指示本小区占用非授权资源发送数据信道的子帧数目。
所述占用信号的图样可以指示PRACH信道的格式及周期和/或SRS的符号索引。
所述其它基站包括:不同运营商的基站以及相同运营商的基站。
当所述其它基站为相同运营商的基站时,可以通过X2接口直接交互非授权资源配置信息,以便进行非授权资源的干扰协调。
该方法还可以包括:
通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
其中,所述物理信令包括***消息,具体可以是DCI或RRC消息等。
该方法还可以包括:在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
从上面的描述中可以看出,实际应用时,非授权资源的协调及数据发送方式可以有以下几种方式:
方式一:完全采用先听后说(LBT,Listen Before Talk)机制,即基站或UE在发送数据之前需要进行侦听或资源竞争,仅检测到资源空闲或者竞争到非授权资源的基站和/或基站下的UE才能在非授权载波上面发送信息。
方式二:不遵循LBT机制,即基站或UE不需要对非授权载波进行侦听或执行资源竞争按照预定义协调好的非授权资源发送数据。
方式三:非授权资源分为两部分,如图2所示,一部分非授权资源采用LBT机制,剩余资源不遵循LBT机制。
其中,实际应用时,对于PUSCH、PUCCH、DMRS、PDCCH、PDSCH,不同基站采用方式一在非授权载波上发送。
对于PRACH和SRS、CRS、CSI-RS、PRS、DRS等用于同步或测量的
信道或信号,不同基站采用方式二或者方式三在非授权载波上发送。
上述同步信道或测量信号也可以通过不需要执行资源竞争或者干净信道评估过程就可以直接使用的信道上发送。
对于同一运营商的不同基站可以通过有线、空口信令、或者X2口进行协商使相邻小区配置不同的PRACH及SRS资源。
对于不同运营商的两个基站如果协商可能,优选采用上述相同运营商下两个基站的协调方式,否则可以采用如下方式对相邻的两个小区进行非授权资源的配置:
方式一:第一个基站通过非授权载波上的公共信道发送一个本小区的资源配置指示信息,第二个基站侦听到该指示信息后选择配置本小区不同的资源,比如不同的OFDM符号、或者不同的子帧图样、或者不同的周期或者偏置、或者不同的频段、不同的码等。
其中,所述公共信道按照预设的周期在预设的非授权载波上发送。
方式二:基站通过接收其他小区发送的占用信号获知其它小区非授权资源的使用指示信息,从而选择配置本小区不同的资源。
方式三:基站直接检测其它基站给UE通过空口物理广播信道或***消息发送的资源配置信令获知其它小区非授权资源的使用指示信息,然后选择不同的资源配置给本小区。
具体地,可以通过侦听其它基站或其它基站下属UE发送的前导序列或者参考信号隐含获得对应的非授权资源,序列可以和资源事先约定,然后再选择不同的资源配置给本小区。
方式四:预先将非授权对应的资源PRACH、SRS进行分组,如图3所示,分组可以仅按某一时域,频域,或者码域划分,也可以将所有时频及序列不分某一域统一进行划分,根据分组选择配置本小区不同的资源。
具体地,首先,按照运营商数目将所有资源分成若干大的集合,比如
集合索引为x={0,1,...,M},M为大于等于运营商的整数,即相同运营商的x索引是相同的,然后,每个大集合内又包含若干子集给每个小区使用,即某个小区所使用的资源组可以选择集合内的一个子集,子集索引y={0,1,...,N},这样,通过(x,y)两维可以唯一确定某个运营商某个小区的非授权PRACH、SRS资源。
然后,预定义前导序列的前M条跟大集合索引一一对应。第一基站或者下属UE在非授权载波的一个公共信道上发送一条前导序列或者该序列的循环移位,其它基站或UE通过侦听该序列就能知道该运营商对应的资源大集合索引,然后根据这些资源大集合索引,选择配置本小区不同的资源。
或者通过函数或者随机序列生成的随机数确定使用的资源子集索引。
该前导序列也可以在采用LBT的资源上发送,即竞争到资源的基站或UE在竞争到的非授权载波上发送前导序列,一方面用来做占用信号,阻止其它基站使用该资源,而本基站或者基站下的UE检测到该前导后就可以使用该资源,另一方面用来指示该基站或该运营商所用的PRACH或者SRS资源集合,其它运营商的基站就要选择不同的集合来配置给下属UE。
同一运营商的不同基站的相邻小区通过空***互协商使用不同的非授权资源,或者通过函数或者随机序列生成的随机数确定使用的资源子集索引。
其中,基站将协调后的小区资源配置信息通过公共信道或者占用信号通知给其它基站,并且通过***消息、物理广播信道、控制信令、或者RRC消息通知给UE。
非授权资源配置可以包括:OFDM符号索引、时隙索引、周期,偏置、PRB索引及数目、序列索引、循环移位、以及梳子(comb)等中的至少一种。
本实施例另一种非授权资源的使用方法,应用于UE,如图4所示,该
方法包括以下步骤:
步骤401:接收基站发送的信令;
这里,所述信令可以是资源抢占信令或非授权资源配置信令。
步骤402:根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
具体地,当所述信令为资源抢占信令时,在对应的非授权载波上进行资源竞争;当所述信令为非授权资源配置信令时,根据非授权资源配置信令对应的非授权资源配置信息,在相应非授权资源上发送物理信道或信号。
其中,所述资源抢占信令可以通过以下至少一种方式实现:调度信令指示、NACK信息指示、定义的RRC消息承载。
所述非授权资源配置信息可以通过公共信道、占用信号、PBCH或者物理信令承载。
其中,实际应用时,可以将所述物理信道或信号对应的所有非授权资源配置信息按照需要,预定义分成第一部分、第二部分及第三部分;换句话说,所述物理信道或信号对应的所有非授权资源配置信息包含预设的第一部分非授权资源配置信息、第二部分非授权资源配置信息以及第三部分非授权资源配置信息;其中,所述第一部分非授权资源配置信息通过公共信道或者占用信号承载,所述第二部分非授权资源配置信息通过PBCH承载,所述第三部分非授权资源配置信息通过物理信令承载。
所述物理信令可以是:RRC消息或DCI,所述物理信令可以在授权或者非授权载波上发送。
这里,所述非授权资源配置信息为DCI指示数据信道的资源位置时,所述非授权资源配置信息指示多个子帧的数据信道的资源位置。
所述非授权资源配置信息可以包括:OFDM符号索引、时隙索引、周期,偏置、PRB索引及数目、序列索引、循环移位、以及comb等中的至少
一种。
所述根据非授权资源配置信令对应的非授权资源配置信息,在相应非授权资源上发送物理信道或信号,具体包括:
根据非授权资源配置信息,通过TDM、FDM、CDM或者不同资源组的方式之一在非授权资源上发送物理信道或信号。
实际应用时,非授权资源可以包括两部分,一部分通过UE所归属的基站或者UE自己或者同一基站的其它UE竞争得到,另一部分通过UE所归属基站和其它基站协商得到。
在对应的非授权载波上竞争到资源后,该方法还可以包括:
立即发送SRS、PRACH前导序列、或者重复发送上行数据的前N个符号、ZC序列、PN序列中的一种;其中,N为小于等于6的正整数。
所述物理信道或信号采用全带宽映射方式。
本发明实施例的方法,基站获取本小区所使用的非授权资源;并向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置;而UE接收基站发送的信令;根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号,如此,能解决LTE***在非授权载波频段进行操作时,各个小区发送物理信道或信号时的资源协调问题,在干扰协调/避免的前提下,不同运营商不同小区的基站或UE都可以在非授权载波上进行数据发送,提高了频谱效率。
实施例二
本实施例对非授权载波上PRACH的资源协调及发送方法进行说明。
PRACH对应的非授权资源包括时域资源、频域资源以及前导码(preamble)资源,每个小区的资源配置可以在LTE规定的原有64种的基础上进行扩展。
非授权载波上PRACH可以采用如下几种方式进行发送。
第一种:采用LBT的方式发送
不同运营商的小区均有可能在非授权载波上传输上下行数据,因此就会存在多个小区同时使用非授权载波发送PRACH作定时同步的情况。针对这种情况,不同运营商的不同小区可以通过以下方式之一进行协调使用有限的非授权资源:
方式一:不同运营商小区采用TDM的协调方式获取到PRACH的非授权资源。
获取到的非授权资源具体可以为:时分的单位可以是1个,2个,3个或者3的整数倍个子帧为单位复用;或者,不同运营商小区直接通过LBT的方式实现不同UE在非授权载波上时分发送PRACH;或者,相邻小区通过不同的子帧时分在相同的非授权载波上发送相同的前导序列。
其中,不同小区的PRACH所分配的***帧号如下:
第一小区:1,5,10,13,17,20,22,24,27,31;
第二小区:3,7,9,11,15,17,23,25,28,32;
第三小区:6,12,14,16,18,21,26,28,30;
第四小区:2,4,8,11,15,19,21,24,26,29。
方式二:不同运营商小区UE采用FDM的协调方式获取到PRACH的非授权资源。
获取到的非授权资源具体可以为:预定义将非授权资源按照频域分为等间隔的或者非均匀的很多频段,每个频段包含6个物理资源块(PRB,Physical Resource Block),不同运营商小区的UE可以同时在不同频段的非授权载波上发送相同的PRACH序列。
方式三:不同运营商小区UE采用CDM的协调方式获取到PRACH的非授权资源,即不同运营商小区UE采用CDM方式可以同时在相同的非授
权载波上发送PRACH。
获取到的非授权资源具体可以为:可以预定义将已有的838条Preamble进行分组,不同小区选择不同的组,或者相邻小区采用相同根序列的不同的循环移位,以实现采用CDM方式同时在相同的非授权载波上发送PRACH;或者,每个小区某个时间内64条根序列的编号是随机选择的,以实现采用CDM方式同时在相同的非授权载波上发送PRACH。其中,可以通过随机序列生成不同的随机数,该随机数对应的随机序列与子帧号及小区ID关联,这样相邻小区就能实现干扰随机化的效果。
相应地,不同小区通过以下协调方法之一实现上述几种PRACH的非授权资源的协调,即告知其它小区本小区PRACH资源配置信息或配置指示信息:
方法一:预定义方式,即多个运营商通过相互协商确定每个运营商非授权载波上PRACH的资源,且相邻小区的PRACH的非授权资源是不相同的,比如不同的时域位置资源、不同的频段、或者不同的前导码等;确定后,各个运营商小区的UE在预定义的时间或预定义的非授权频段上发送PRACH,避免出现严重碰撞的情况。
方法二:信令通知方式,即先入网基站通过非授权公共信道发送本小区UE的PRACH资源配置信息或配置指示信息,后续不同运营商的小区给相邻小区选择其它不同的PRACH非授权资源进行配置。
举个例子来说,假设基站A是地理位置中第一个开始使用非授权载波的基站(实际应用时,可以根据该地理位置L1的运营商实际部署情况确定第一个开始使用非授权载波的基站),基站A将在非授权公共信道上发送本小区PRACH资源配置信息,此信息可以通过显示信令发送或者通过其它方式通知给其它基站。
其中,发送本小区PRACH资源配置信息的方式可以是:直接将基站A
非授权载波上PRACH资源配置信息通过公共信道承载;其中,资源配置信息主要包括:上行带宽、PRACH频域位置f1、时域周期t1、前导码ZC根序列的数量和编号1-20。
或者,发送本小区PRACH资源配置信息的方式可以是:公共信道的频域位置映射PRACH的资源配置组号信息,比如频域位置f2对应PRACH资源配置的组号7。
或者,发送本小区PRACH资源配置信息的方式可以是:预定义序列和配置组的一一对应关系确定资源组,比如序列00110110标识对应组号9;公共信道承载的序列映射非授权载波上PRACH资源配置组。
需要说明的是:公共信道上的本小区PRACH资源配置信息是周期发送的,后续其它基站如果使用非授权载波就要先对公共信道进行盲检,根据盲检结果确定已用或待用的非授权资源,然后选择不同的非授权资源。
或者,发送本小区PRACH资源配置信息的方式可以是:抢占到非授权资源的基站或下属UE通过占用信号发送本小区PRACH资源配置指示信息。其中,所述指示信息为显示比特指示或者通过隐含映射的方式指示。PRACH资源配置信息是时域资源配置、频域资源配置或码域资源配置的一个或多个。
方法三:盲检方法,后续不同运营商的小区通过盲检先入网相邻小区发送的PRACH,确定先入网小区的PRACH非授权资源配置后,再给本小区选择不同的PRACH配置。
这里,相同运营商的小区可以通过空***互协商实现非授权载波上PRACH资源不同的时域或频域或前导配置,避免相邻小区配置相同PRACH非授权资源出现碰撞严重问题。
基站之间按照上述方法协商好后,将本小区非授权资源上的PRACH具体资源配置信息通过***消息或者寻呼消息通知给本小区的UE,UE按照
配置信息在相应时刻的相应非授权资源上发送对应的PRACH。其中,
实际应用时,如果同一小区的多个UE在相同的时频资源发送了相同的前导码就会出现竞争冲突问题,此时可以通过已有的后续的竞争方案解决,这里不再赘述。
另外,除上述三种告知其它小区本小区PRACH资源配置信息或配置指示信息的方法外,也可以预定义将PRACH的非授权资源分组,按时域(不同子帧或***帧)、频域、或者前导码进行分组。
比如将根序列编号为0~837的preamble进行分组。
具体分组方法及每个组包含的编号示例如下:
第一组:1,M+1,2M+1,3M+1,4M+1,5M+1,……,(Q-1)·M+1;
第二组:2,M+2,2M+2,3M+2,4M+2,5M+2,……,(Q-1)·M+2;
第三组:3,M+3,2M+3,3M+3,4M+3,5M+3,……,(Q-1)·M+3;
… … … … … … … … … …
第M组:M,2M,3M,4M,5M,6M,……,Q·M。
其中,Q、M均为正整数。
基站每隔一段时间随机选择其中的一组资源配置给本小区,或者每个小区的前导组索引通过随机序列生成的随机数确定,且相邻小区所确定使用的序列及随机数都不相同。
需要说明的是,不同运营商小区非授权资源的协调可以从两个方面进行:
一方面,如图5所示,可以直接对现有PRACH对应的资源配置进行划分。
举个例子来说,对于FDD,将原来LTE已有的64种配置按照运营商进行划分,比如可以将已有LTE中定义的PRACH配置索引参数为26的子帧2分配给一个运营商的UE使用,子帧5给另一个运营商的UE使用,子
帧8为两个运营商共用;或者,可以将原来的64种配置进行划分,不同运营商分配其中不同的几种。
另一方面,也可以在现有LTE规定的PRACH资源配置基础上,增加新的资源配置,且不同运营商的资源配置是不相同的。
举个例子来说,对于FDD,增加新的配置索引65,前导格式为0,对应***帧为3的整数倍,子帧为0。
除上述给出的非授权上PRACH协调发送的方法外,不同运营商的小区还可以采用以下方法:
首次配置不考虑协商,发现干扰或碰撞严重后,再选择不同的配置,然后通过***消息或RRC消息通知本小区UE更改PRACH的配置。
在非LBT方式下,通过使用本实施例提供的非授权资源协调方法能避免多个小区同时使用非授权资源发送PRACH导致的资源碰撞问题,从而有效地实现干扰避免前提下的资源协调。
第二种:采用LBT的方式发送
基站或基站触发下属UE在预定义载波上进行侦听或资源竞争,以获取非授权资源。该方式下只有竞争到非授权资源的基站的下属UE才能在非授权载波上发送PRACH。没有竞争到非授权资源的基站的下属UE在一段时间内就不能在对应非授权载波上发送PRACH。
这种情况下,没有竞争到资源的UE可以通过不需要执行资源竞争或者干净信道评估过程就可以直接使用的信道发送PRACH。
第三种:采用LBT和非LBT结合的方式发送
具体地,预定义某些PRACH非授权资源采用非LBT的方式获取,其它PRACH非授权资源采用LBT的方式获取。
对于UE来说,一方面可以按照预定义协商好的非授权资源发送PRACH。另一方面同时也可以在规定采用LBT方式获取的PRACH非授权
资源上进行非授权资源竞争,竞争到资源后就可以发送PRACH,这样可以增加接入的概率。
从上面的描述中可以看出,通过不同运营商协调,解决了多个小区的UE同时在相同的非授权载波上发送相同的前导序列而产生的碰撞及干扰问题,降低了接入的时延。
实施例三
本实施例对不同运营商多个小区SRS非授权资源协调及发送方法进行说明。
SRS非授权资源可以包括时域资源(OFDM符号,子帧)、频域资源、以及不同序列及循环移位对应的码域资源。
非授权载波上的SRS可以采用如下几种方式进行发送。
第一种:采用非LBT的发送方式
该方式下,允许多个运营商的多个小区不需要竞争就可以直接获取SRS非授权资源,从而使得多个运营商的多个小区下属的UE在非授权载波上发送SRS,但为了避免出现干扰,需要多个运营商进行资源协调。多运营商多小区SRS资源协调的具体实现方法有以下几种:
方法一:不同运营商采用不同的OFDM符号或时隙时分方式区分,相同运营商的不同基站通过X2口协商不同小区的UE通过不同子帧时分,频分或者码分的方式发送SRS。
具体地,如附图6所示,多个运营商小区通过不同的OFDM符号发送SRS。
不同运营商可以通过如下方式之一区分SRS的非授权符号资源,即协商SRS的非授权资源:
方式一:预定义的方式;
具体地,多个运营商协商后每个运营商固定使用每个子帧的某一个或
者多个OFDM符号。
方式二:信令通知;
具体地,先入网基站通过非授权公共信道发送本小区UE的SRS所在OFDM符号指示信息,后续不同运营商的小区选择其它不同的OFDM符号。其中,非授权公共信道上的SRS所在OFDM符号指示信息是周期发送的,所有基站均需要盲检非授权公共信道,来获取不同运营商小区UE的SRS所在OFDM符号。
或者,抢占到非授权资源的基站或下属UE通过占用信号发送本小区SRS资源配置指示信息。其中,指示信息为显示比特指示或者通过隐含映射的方式指示。举个例子来说,定义3比特显示指示所在的OFDM符号,或者通过预定义占用信号,比如序列索引和不同符号的映射关系隐含得到具体的符号索引。
这里,通过公共信道发送的参考信号图样获知SRS所在OFDM符号的方式为:
假设参考信号为CRS,一种方式通过CRS的频域偏移位置来映射符号索引,频移0个子载波为第一个OFDM符号,2为第二个OFDM符号,依次类推;
或者,通过参考信号预定义周期偏移量和符号之间的映射关系来获知。映射关系如表1所示:
表1
方式三:盲检;
具体地,后续小区挨个OFDM符号进行检测,并约定一些判断规则,最终确定自身相邻的其它运营商小区SRS的非授权资源配置,然后给本小区配置不同的SRS非授权资源。
方式四:通过侦听或检测占用信号获知其它小区已用的SRS非授权资源,然后为本小区配置不同的SRS非授权资源;
方式五:通过接收其它基站发送的广播***消息得到某小区SRS子帧集合,然后选择不同的子帧集合,比如配置本小区内的TSFC和ΔSFC两个参数跟上述不同;这里,TSFC表示子帧周期;ΔSFC表示子帧偏置。
其中,相同运营商的相邻小区除上述协调方式外,还可以通过X2直接交互SRS配置消息进行SRS非授权资源的干扰协调,干扰协调的方法可以采用以下之一:
一、子帧时分,即不同小区SRS所在子帧不同,通过配置TSFC和ΔSFC两个参数中的一个不同实现。同一小区不同UE可以进一步配置不同周期和偏置时分。
二、不同小区UE的SRS子帧相同,频域位置不同;
三、不同小区UE的SRS带宽相同,根序列不同(不同的组),同一小区UE采用不同的循环移位正交。
然后,基站通过PBCH广播本小区所在的SRS符号,并通过RRC消息通知UE的SRS周期、偏置、带宽、循环移位、以及comb等相关参数。同一UE通过多次不同的频域位置配置完成整个带宽的探测。
其它类似不同运营商进行SRS非授权资源协调的方法还有:不同运营商通过不同非授权频带频分发送SRS;同一运营商不同小区协商不同OFDM符号/不同子帧时分,或者最大频段内窄带SRS频分,或者码分;同一小区内的所有UE使用的序列来自同一个序列组,当UE间具有相同带宽时采用循环移位或comb实现SRS正交化,这样,当具有不同带宽时自然
地以FDM实现正交。
方法二:不同运营商不同小区的SRS非授权资源采用分组的协调方式发送。
首先,预定义将所有SRS非授权资源(子帧,符号,频域,根序列)进行分组,或者将SRS非授权资源仅按某一域进行分组。
相同运营商的SRS非授权资源组构成一个大的集合,集合索引为x={0,1,...,M},每个大集合内又包含若干子集给每个小区使用,即某个小区所使用的SRS非授权资源组可以选择集合内的一个子集,子集索引y={0,1,...,N},这样,通过(x,y)两维即可以唯一确定某个运营商某个小区的SRS非授权资源。
然后,先入网基站在非授权公共信道广播指示信息指示本小区SRS所用的组号,其它基站通过侦听该指示信息获知该小区SRS非授权资源的配置信息,从而相邻的不同运营商的小区选择不同的x值,相同运营商的小区选择不同的y值。
其中,其它基站还可以通过先入网基站的小区ID隐含得到对应的SRS的配置组,特别是y的值可以与小区ID关联。
或者,其它基站可以通过广播控制信道(BCCH,Broadcast Control Channel)中的陷入网基站的小区PRACH资源隐含得到陷入网基站的小区SRS非授权资源的配置组(前导序列(838)分组,一一对应,然后某小区的PRACH资源跟本小区的SRS配置对应,其它小区通过接收BCCH获得该小区的PRACH资源,从而间接获得该小区SRS非授权资源的配置信息,然后再选择不同的组)。
或者,通过基站或UE在非授权载波发送的占用信号所用的序列隐含得到该小区SRS非授权资源的配置信息。这里占用信号的序列和SRS资源配置也是预定义一一对应的。
最后,基站通过RRC消息通知本小区的UE SRS序列循环移位、comb等SRS资源配置参数。
从上面的描述中可以看出,不同运营商的小区采用非LBT的方式协调使用SRS非授权资源,可以实现在干扰协调/避免的前提下,多个UE都可以在非授权载波上发送SRS,对U载波做测量,后续基站可以基于测量结果在竞争到资源的时候做合理的上行调度/资源分配,提高频谱效率。
第二种:采用LBT的发送方式
具体地,所述LBT的发送方式是指:基站或基站触发下属UE在预定义载波上进行侦听或资源竞争,以获取非授权资源,只有竞争到非授权资源的基站的下属UE才能发送SRS,没有竞争到资源的基站的下属UE不能发送SRS。
该方式下,UE动态发送SRS的过程如下:
首先,基站自身或基站触发下属UE进行非授权资源的资源竞争。
然后,假设在n时刻,基站自身竞争到非授权资源,基站在竞争到的非授权资源上发送占用信号的同时或之后,通过授权载波或者竞争到的非授权载波上发送DCI触发本小区UE发送SRS。
LBT的发送方式下,由于抢占到资源的时刻不确定,因此UE通常都是发送非周期SRS。为了支持更多UE在抢占到的时间内发送SRS,将SRS资源扩展到一个子帧的多个OFDM符号,每个符号的频域结构跟原来LTE一个子帧的SRS一样。
DCI包含的信令指示为每个UE的SRS所用的OFDM符号索引,其它参数组(包括带宽、频域位置、comb、循环移位、天线端口以及周期等)通过RRC消息配置给UE。
实际应用时,可以定义一种新的DCI格式,该格式专门用于触发多个UE进行SRS发送。具体地,需要DCI中几个比特来指示特定UE的非周
期SRS所在的OFDM符号,参数组。
可选的,在占用时间内,预定义某些子帧或OFDM符号传输SRS,其它子帧或符号用于传输上下行数据。
UE收到信令后,n+k时刻按照指示的参数发送SRS。其中,考虑到占用时间和周期的限制,k的取值应该尽量小,确保在占用时间内尽量多的UE完成测量。
实际应用时,LBT的发送方式下,SRS带宽可以为全带宽。
如果是UE在n时刻竞争到了非授权资源,UE可以按照上次基站配置的SRS资源指示信息在抢占到的非授权载波上立即发送SRS,该SRS可以为连续重复发送以用作占用信号。
这里,占用信号有两个作用:
一个作用是可以作为占用信号,以表示该非授权资源已经被占用,同时告知其它基站及UE是哪个运营商的哪个基站下的UE抢占到了该非授权资源,这样,其它基站就不能使用该资源,而归属基站就可以在该非授权资源的载波上调度数据或者发送控制信息,以便让UE发送SRS;或者,同一基站的UE按照基站之前的调度信息在该载波上发送数据。
另一个作用是可以对信道进行测量。
用作占用信号的SRS非授权资源是专门的一部分,且所有其它的基站都能接收到作为占用信号的SRS。因此,其它基站收到该UE广播的SRS之后,就知道该非授权载波已经被其它设备所占用,在后续一段时间内就不会再对该非授权资源进行抢占。
相应地,UE所归属的基站收到作为占用信号的SRS后,一方面可以利用该UE抢占到的非授权资源进行数据调度,另一方面可以基于收到的SRS对信道质量进行估计,以便下次对该UE在该载波进行调度时分配合适的调制与编码策略(MCS,Modulation and Coding Scheme)。对于非授权载波用
于时分双工(TDD,Time Division Duplexing)的情况,该测量结果还可以用于对下行数据进行调度。
采用LBT的发送方式不需要考虑多个运营商干扰的问题,且对竞争到的小区来说,该SRS发送方式与传统的LTE下SRS发送方式相比增加了发送的机会、扩容,确保了竞争到资源的基站下的UE都能作测量,基站基于测量结果作上行调度或TDD利用信道互异性作多输入多输出(MIMO,Multiple-Input Multiple-Output)传输。此时,没有竞争到资源的UE可以通过不需要执行资源竞争或者干净信道评估过程就可以直接使用的信道发送SRS,以降低测量时延。
第三种:采用LBT和非LBT结合的方式发送
具体地,某些时间内,不同运营商通过预定义协商(或者分组)、信令通知、盲检、或者隐含映射,最终实现相邻小区的UE的SRS通过不同OFDM符号/子帧时分或者频分或者码分复用非授权资源(即非LBT的方式);其它时间还是采用LBT的方式发送。在这种方式下,基站基于最近的测量结果进行调度。
其中,某些时间可以是预定义的一些非连续时间。比如子帧号满足mod(n,T)=k的那些时间开始就不需要采用LBT的发送方式了;其中,n是***帧号,T是预定义的周期,k是偏移量,持续时间为10ms或者20ms或者50ms等。
在这种方式下,SRS是周期加非周期结合的方式发送。周期发送是指:通过非LBT协调的资源进行发送,非周期发送是指:通过竞争发送,发送机会增加能满足测量要求。
从上面的描述中可以看出,通过使用本实施例的LBT和非LBT结合的方式发送SRS,基站可以基于测量结果在竞争到资源的时候做合理的上行调度/资源分配,提高频谱效率。另外,还增加了测量的机会,确保了竞争
到资源的基站下的UE都能作测量,基站基于最近测量结果作上行调度或TDD利用信道互异性作MIMO传输。
实施例四
本实施例描述非授权载波上数据信道(PUSCH及PDSCH)的资源协调方法。
不同运营商的数据信道可以通过以下方式之一进行非授权资源的协调:
方式一:预定义静态配置方式
不同运营商协商可以分别使用不同的非授权资源进行数据信道传输;比如,按照时域将非授权资源划分为多个段,同一运营商使用其中连续的或者非连续的若干个时间段;或者,按照频域将非授权资源划分为多个频率段,同一运营商使用其中连续的或者非连续的若干个频率段。
或者,不同运营商可以同时在相同的非授权频段上进行数据传输,但数据采用不同的正交码或非正交码进行加扰。其中,正交码可以为PN码或者ZC根序列。
方式二:半静态或动态配置方式
第一运营商的基站通过公共信道广播本小区数据信道所用的非授权资源,比如哪些子帧,哪些载波,所用的正交码,第二运营商的基站通过侦听该信息,然后选择不同的资源配置给数据信道使用。
其中,广播本小区数据信道所使用的非授权资源时,具体资源指示可以采用以下方式之一:
方式一:显示信令通知方式,即直接将使用的资源通过专有的信令及比特承载。
方式二:隐含通知方式,通过前导或者参考信号隐含指示使用的资源。
具体地,预定义将preamble或者参考信号的ZC根序列与非授权资源
建立映射关系,这里preamble或者参考信号可以作为占用信号在非授权载波或公共信道上面发送。
对于同一运营商的不同小区的非授权资源的数据传输的资源协调除上述方式外,还可以直接通过X2交互信息协商的方式使用非授权资源。
具体地,如图7所示,对于非授权资源上PDSCH/PUSCH的资源分配及传输可以有采用以下一种方法:
第一种方法:每个子帧对应一个UE的PDSCH/PUSCH,不同UE的PDSCH/PUSCH在不同OFDM符号或者不同子帧上传输。
其中,不同运营商的UE可以通过LBT方式实现不同UE的数据在不同子帧上传输,同一基站的不同UE通过基站调度信令指示子帧索引。
第二种方法:每个子帧或多个子帧对应不同UE的PDSCH/PUSCH,不同运营商的不同UE可以通过频分方式复用非授权资源。
第三种方法:多个UE的PDSCH/PUSCH同时在相同的非授权载波上进行传输,不同运营商的用户通过不同的正交码或者非正交码(NOMA)进行区分。
这里,UE可以属于相同或者不同的运营商,具体资源位置可以通过基站的DCI指示。一个DCI可以同时指示某一个UE的多个子帧的传输方式,即采用多子帧调度方式,或者一个DCI同时指示多个UE的传输方式,即多个UE的调度信息采用联合编码的方式包含在一个DCI中;其中,DCI可以在授权载波或者非授权载波发送。
通过上述方法可以实现非授权载波上不同运营商的UE数据协调发送。
实施例五
本实施例对非授权载波上UE采用LBT和非LBT结合的发送方式进行说明。
采用LBT和非LBT结合的发送方式是指:一方面,UE可以按照基站
配置的非LBT的方式发送上行信号,比如SRS、PRACH等;另一方面,UE也可以直接在抢占到的非授权载波上发送上行物理信道或信号,即以LBT的方式发送。
举个例子来说,假设在时刻N,UE竞争到了非授权载波资源,就可以在该载波上立即发送一个SRS或者前导PRACH,发送的上行信号一方面可以指示该载波已经被占用,防止被其它UE或基站抢走,另一方面通过侦听上行信号的序列,其它UE或基站就可以知道是哪个运营商的哪个基站抢到了该资源、以及隐含得到该UE所属的基站相应的PRACH及SRS配置集合;然后不同运营商的基站给相邻的小区就会配置不同的资源来避免干扰。同时,相同基站下的UE也可以在基站调度下在该资源上进行数据传输。
然后竞争到非授权载波资源的UE按照基站之前发送的调度信息就可以在该载波上面发送PUSCH、或者PUCCH及DMRS。该信道可以是全带宽的映射,或者按照目前LTE规定的多个UE采用FDM的方式在非授权载波上发送。
这里,当以LBT的方式发送时,基站需要在UE竞争到资源之前就将调度信息通过DCI通知给UE。
如果配置用非LBT的方式发送,不同运营商的UE可以通过频分或者码分的方式同时在非授权载波上发送PUSCH、PUCCH、PRACH、或者SRS。
还可以采用如下方式对非授权资源进行协调:
对非授权资源进行划分,一部分采用LBT的方式发送,另一部分采用非LBT的方式发送。
首先,预定义将所有的非授权资源进行划分,一部分供竞争到非授权资源的基站对本小区UE的非授权资源配置(LBT的方式),另一部分供没有竞争到非授权资源的基站下的UE使用(非LBT的方式)。
被划分的非授权资源可以是时域资源,或者频域资源。
对于LBT方式的那部分非授权资源,不同运营商不同小区通过竞争的方式共享使用,对于非LBT方式的那部分非授权资源,不同运营商不同基站小区通过协调干扰的方式使用。
UE按照接收到的指示在相应时刻相应非授权载波上发送上行数据或者接收下行数据。
通过该方式,一方面可以保证UE发送非授权机会均等,另一方面又能将抑制干扰,扩大了数据发送或测量时间。
实施例六
本实施例对各个信道在非授权载波发送时的资源协调进行说明。
对于多个信道同时在非授权载波上进行传输的情况,可以按照如下方式处理:
对于非授权载波用于上行传输的情况:如果是同一UE的PRACH和SRS同时在同一个非授权资源上传输,则UE需要放弃SRS的传输,避免对PRACH的干扰;如果出现同一UE的PUCCH和SRS同时在相同的非授权载波上传输,UE也需要放弃SRS传输或者采用PUCCH截短的结构。而SRS的传输通过其它占用信号或者动态触发的发送方式补偿或者通过DMRS进行信道探测来代替SRS完成非授权载波上的信道测量。对于PUSCH和SRS出现同传的情况,可以预定义不同符号时分。
对于非授权载波上采用类似TDD的帧结构形式,比如,可以采用图8所示的帧结构,PDCCH、PDSCH和其他上行信道或信号采用时分的方式发送,且SRS、CRS、DRS通常在干净信道评估(CCA,Clear Channel Assessment)之后发送,上行子帧用于传输PRACH或者PUSCH,下行子帧用于发送PDCCH或者ePDCCH、PDSCH。
通过上述的信道协调方式实现多个信道非授权载波上的发送。
实施例七
本实施例从基站侧描述非授权载波协调及数据发送方法的具体流程,如图9所示,该流程主要包括以下步骤:
步骤901:基站选择要进行数据调度传输的非授权载波;
步骤902:基站进行判断,该资源是否需要进行先侦听进行资源竞争,如果是,则执行步骤903,否则,执行步骤905;
步骤903:基站自身或者触发下属UE进行资源竞争;
步骤904:竞争到资源后,在竞争到的非授权载波上发送数据;
步骤905:按照资源协调的结果在协调好的时刻或者用协调好的码加扰进行数据发送或接收。
这里,资源协调是静态的、半静态或动态的方式。
其中,静态的方式为:不同运营商协商好或者分配固定的非授权资源。
半静态的方式为:基站将本小区使用的非授权资源指示信息通过公共信道广播给其它基站,以便其它基站选择不同的非授权资源。
动态方式为:基站通过占用信号或者物理信令指示本小区非授权资源,其它基站根据此信息,选择不同的非授权资源。
实施例八
本实施例从UE侧描述非授权载波协调及数据发送过程,如图10所示,该过程主要包括以下步骤:
步骤1001:UE接收基站发送的信令;
这里,接收的信令为非授权资源抢占指示信令或者调度信令,或者物理信道或信号的非授权资源配置信令。
步骤1002:UE根据信令判断是否需要竞争非授权资源,如果是,则执行步骤1003,否则,执行步骤1005;
步骤1003:UE按照信令指示在相应非授权载波上进行资源竞争;
这里,资源抢占信令也可以通过调度信令指示。
举个例子来说,假设基站在N时刻发送资源抢占信令,该信令通过RRC专有消息承载或者直接通过UL grant承载,或者通过PHICH信道隐含指示。
然后,UE接收到该信令后,在N时刻之后开始进行资源竞争,即干净信道评估,如果信道为空闲或竞争到资源后,UE立即发送一个占用信号将该信道占用下来以防止被其它基站或UE抢走,该占用信号为SRS,或前导或其它的ZC序列或PN序列,且该序列与小区ID一一对应,其它基站或UE接收到该消息后就能知道是哪个小区竞争到了资源。
其中,如果UE没有收到UL grant,则UE抢占到的资源基站可以用来发送下行数据,此时,UE需要通过盲检来接收基站发送的下行数据。
步骤1004:竞争到资源后,在竞争到的非授权资源上发送或接收数据;
这里,等非授权载波和对应的主载波对齐以后UE可以发送数据。
步骤1005:按照配置信令在相应时刻的相应非授权载波上发送物理信道或信号。
实施例九
为实现本发明实施例的方法,本实施例提供一种基站,如图11所示,该基站包括:获取单元111以及广播单元112;其中,
所述获取单元111,配置为获取本小区所使用的非授权资源;
所述广播单元112,配置为向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
其中,所述获取单元111,具体配置为:通过资源竞争的方式获得本小区所使用的非授权资源;或者,
与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,
获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授
权资源,获取本小区所使用的非授权资源。
其中,所述通过竞争的方式获得本小区所使用的非授权资源,具体为:
自身或触发下属UE在设置的非授权载波上进行资源竞争,以获得本小区所使用的非授权资源。
这里,所述下属UE可以是空闲态的UE、接收到调度请求的UE、或者被允许调度的UE。
后两种方式下,基站或下属UE可以直接在协调好的资源上发送信号或信道,而无需执行干净信道评估过程。
这里,实际应用时,可以将所有的非授权资源划分为两部分,一部分为所有小区共享的资源,这部分资源需要基站通过资源竞争的方式获得本小区所使用的非授权资源;另一部分为不是所有小区共享的资源,这部分资源需要基站通过与其它基站协调的方式获得本小区所使用的非授权资源。其中,非授权资源的划分可以根据网络需要来划分。
所述与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源,具体包括:
通过采用不同的OFDM符号、不同时隙、不同子帧同样、不同周期和/或偏置时分、不同非授权频带频分、不同序列码分方式中的任意一种,获取本小区所使用的非授权资源;或者,
可以将所有非授权资源分组或设置不同的集合,各组或集合包含的非授权资源全部正交或部分正交,如此,能有效地避免干扰;通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源。
其中,所述通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源,具体包括:
根据预先配置的小区和组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过hash函数或随机序列生成的随机数,结合函数或随机数与组或集合的对应关系,获取本小区所使用的非授权资源;或者,
通过侦听公共信道或占用信号承载的其它小区使用的非授权资源组或集合指示信息,获取本小区所使用的非授权资源。
这里,所用的函数类似如下之一的形式:
所述hash函数与小区ID及时隙相关;所述随机序列为具有不相关性的序列,比如m序列、gold序列等。
所述获取其它小区非授权资源的使用信息,具体包括:
通过盲检获取其它小区非授权资源的使用信息;或者,
通过侦听非授权公共信道上其它基站发送的非授权资源使用的相关信息,获知其它小区非授权资源的使用信息;或者,
通过接收其他小区发送的占用信号,获知其它小区非授权资源的使用信息;或者,
通过空口PBCH或***消息,获知其它小区非授权资源的使用指示信息。
其中,所述其它小区非授权资源的使用信息可以通过显示信令承载或者通过序列和非授权资源的映射关系得到。
本小区的非授权资源配置可以包括时域资源、频域资源、码域资源配置中的一种或多种;相应地,广播的所述非授权资源配置信息可以包括:时域资源、频域资源、码域资源配置信息中一种或多种。实际应用时,广播的非授权资源配置信息为SRS和/或PRACH的非授权资源配置信息;其中,
广播的SRS的非授权资源配置信息为已有的SRS资源配置的全部或者部分信息,或者为新增的SRS的符号资源配置信息;
广播的PRACH的非授权资源配置信息为已有的PRACH资源配置的全部或部分信息,或者为新增的PRACH序列资源配置信息。
所述非授权资源用于传输物理信道或信号。
其中,使用所述非授权资源发送的信息可以包括:PRACH前导序列、SRS,PUSCH、PUCCH、DMRS、CRS、CSI-RS、PRS、DRS、PDCCH、PDSCH中的一个或多个,或者其它用于同步测量的信道或信号。
相应地,实际应用时,当发送多个信道或信号时,所述非授权资源配置信息可以指示发送的多个信道或信号中的一部分(一个或多个),而对于发送的另一部分信道或信号,其它基站可以通过接收的其它信号或信道来确定。
所述广播单元112,具体配置为:通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
其中,所述通过非授权公共信道广播本小区的非授权资源配置信息,具体包括:
直接将所述非授权资源配置信息通过所述非授权公共信道承载;或者,
所述非授权公共信道所在的频域位置映射所述非授权资源配置信息;频域位置与非授权资源配置信息一一对应;或者,
通过所述非授权公共信道发送的序列映射所述非授权资源配置信息;序列与非授权配置信息一一对应;或者,
通过所述非授权公共信道传输的预设的参考信号的图样,传输所述非授权资源配置信息。
其中,通过所述非授权公共信道发送的序列映射所述非授权资源配置信息时,换句话说,在所述非授权公共信道上按照预定义的周期在预定义
的某些非授权载波上发送时,所述发送的序列在信道的前几个OFDM符号发送。这里,实际应用时,发送的序列可以在信道的前1个、前2个或前3个OFAM发送。
所述占用信号,一方面可以表征抢占到非授权资源;另一方面可以表征本小区的非授权资源配置信息。
所述占用信号可以与所述非授权资源配置信息一一对应。
所述占用信号的根序列可以与发送参考信号的根序列相同。
所述占用信号循环移位可以指示本小区占用非授权资源发送数据信道的子帧数目。
所述占用信号的图样可以指示PRACH信道的格式及周期和/或SRS的符号索引。
所述其它基站包括:不同运营商的基站以及相同运营商的基站。
当所述其它基站为相同运营商的基站时,可以通过X2直接交互非授权资源配置信息,以便进行非授权资源的干扰协调。
该基站还可以包括:配置信息通知单元,配置为通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
其中,所述物理信令包括***消息,具体可以是DCI或RRC消息等。
该基站还可以包括:数据发送单元,配置为在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
实际应用时,获取单元111可由基站中的中央处理器(CPU,Central Processing Unit)、微处理器(MCU,Micro Control Unit)、数字信号处理器(DSP,Digital Signal Processor)或可编程逻辑阵列(FPGA,Field-Programmable Gate Array)结合收发机实现;所述广播单元112、配置信息通知单元以及数据发送单元可由基站中的发射机实现。
从上面的描述中可以看出,实际应用时,非授权资源的协调及数据发
送方式可以有以下几种方式:
方式一:完全采用LBT机制,即基站或UE在发送数据之前需要进行侦听或资源竞争,仅检测到资源空闲或者竞争到非授权资源的基站和/或基站下的UE才能在非授权载波上面发送信息。
方式二:不遵循LBT机制,即基站或UE不需要对非授权载波进行侦听或执行资源竞争按照预定义协调好的非授权资源发送数据。
方式三:非授权资源分为两部分,如图2所示,一部分非授权资源采用LBT机制,剩余资源不遵循LBT机制。
其中,实际应用时,对于PUSCH、PUCCH、DMRS、PDCCH、PDSCH,不同基站采用方式一在非授权载波上发送。
对于PRACH和SRS、CRS、CSI-RS、PRS、DRS等用于同步或测量的信道或信号,不同基站采用方式二或者方式三在非授权载波上发送。
上述同步信道或测量信号也可以通过不需要执行资源竞争或者干净信道评估过程就可以直接使用的信道上发送。
对于同一运营商的不同基站可以通过有线、空口信令、或者X2口进行协商使相邻小区配置不同的PRACH及SRS资源。
对于不同运营商的两个基站如果协商可能,优选采用上述相同运营商下两个基站的协调方式,否则可以采用如下方式对相邻的两个小区进行非授权资源的配置:
方式一:第一个基站通过非授权载波上的公共信道发送一个本小区的资源配置指示信息,第二个基站侦听到该指示信息后选择配置本小区不同的资源,比如不同的OFDM符号、或者不同的子帧图样、或者不同的周期或者偏置、或者不同的频段、不同的码等。
其中,所述公共信道按照预设的周期在预设的非授权载波上发送。
方式二:基站通过接收其他小区发送的占用信号获知其它小区非授权
资源的使用指示信息,从而选择配置本小区不同的资源。
方式三:基站直接检测其它基站给UE通过空口物理广播信道或***消息发送的资源配置信令获知其它小区非授权资源的使用指示信息,然后选择不同的资源配置给本小区。
具体地,可以通过侦听其它基站或其它基站下属UE发送的前导序列或者参考信号隐含获得对应的非授权资源,序列可以和资源事先约定,然后再选择不同的资源配置给本小区。
方式四:预先将非授权对应的资源PRACH、SRS进行分组,如图3所示,分组可以仅按某一时域,频域,或者码域划分,也可以将所有时频及序列不分某一域统一进行划分,根据分组选择配置本小区不同的资源。
具体地,首先,按照运营商数目将所有资源分成若干大的集合,比如集合索引为x={0,1,...,M},M为大于等于运营商的整数,即相同运营商的x索引是相同的,然后,每个大集合内又包含若干子集给每个小区使用,即某个小区所使用的资源组可以选择集合内的一个子集,子集索引y={0,1,...,N},这样,通过(x,y)两维可以唯一确定某个运营商某个小区的非授权PRACH、SRS资源。
然后,预定义前导序列的前M条跟大集合索引一一对应。第一基站或者下属UE在非授权载波的一个公共信道上发送一条前导序列或者该序列的循环移位,其它基站或UE通过侦听该序列就能知道该运营商对应的资源大集合索引,然后根据这些资源大集合索引,选择配置本小区不同的资源。
或者通过函数或者随机序列生成的随机数确定使用的资源子集索引。
该前导序列也可以在采用LBT的资源上发送,即竞争到资源的基站或UE在竞争到的非授权载波上发送前导序列,一方面用来做占用信号,阻止其它基站使用该资源,而本基站或者基站下的UE检测到该前导后就可以使用该资源,另一方面用来指示该基站或该运营商所用的PRACH或者SRS
资源集合,其它运营商的基站就要选择不同的集合来配置给下属UE。
同一运营商的不同基站的相邻小区通过空***互协商使用不同的非授权资源,或者通过函数或者随机序列生成的随机数确定使用的资源子集索引。
其中,基站将协调后的小区资源配置信息通过公共信道或者占用信号通知给其它基站,并且通过***消息、物理广播信道、控制信令、或者RRC消息通知给UE。
非授权资源配置可以包括:OFDM符号索引、时隙索引、周期,偏置、PRB索引及数目、序列索引、循环移位、以及comb等中的至少一种。
为实现本发明实施例的方法,本实施例还提供一种UE,如图12所示,该UE包括:接收单元121以及执行单元122;其中,
所述接收单元121,配置为接收基站发送的信令;
所述执行单元122,配置为根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
其中,所述信令可以是资源抢占信令或非授权资源配置信令。
所述执行单元122,具体配置为:当所述信令为资源抢占信令时,在对应的非授权载波上进行资源竞争;当所述信令为非授权资源配置信令时,根据非授权资源配置信令对应的非授权资源配置信息,在相应非授权资源上发送物理信道或信号。
这里,所述资源抢占信令可以通过以下至少一种方式实现:调度信令指示、NACK信息指示、定义的RRC消息承载。
所述非授权资源配置信息可以通过公共信道、占用信号、PBCH或者物理信令承载。
其中,实际应用时,可以将所述物理信道或信号对应的所有非授权资源配置信息按照需要,预定义分成第一部分、第二部分及第三部分;换句
话说,所述物理信道或信号对应的所有非授权资源配置信息包含预设的第一部分非授权资源配置信息、第二部分非授权资源配置信息以及第三部分非授权资源配置信息;其中,所述第一部分非授权资源配置信息通过公共信道或者占用信号承载,所述第二部分非授权资源配置信息通过PBCH承载,所述第三部分非授权资源配置信息通过物理信令承载。
所述物理信令可以是:RRC消息或DCI,所述物理信令可以在授权或者非授权载波上发送。
这里,所述非授权资源配置信息为DCI指示数据信道的资源位置时,所述非授权资源配置信息指示多个子帧的数据信道的资源位置。
所述非授权资源配置信息可以包括:OFDM符号索引、时隙索引、周期,偏置、PRB索引及数目、序列索引、循环移位、以及comb等中的至少一种。
所述根据非授权资源配置信令对应的非授权资源配置信息,在相应非授权资源上发送物理信道或信号,具体包括:
所述执行单元122根据非授权资源配置信息,通过TDM、FDM、CDM或者不同资源组的方式之一在非授权资源上发送物理信道或信号。
实际应用时,非授权资源可以包括两部分,一部分通过UE所归属的基站或者UE自己或者同一基站的其它UE竞争得到,另一部分通过UE所归属基站和其它基站协商得到。
所述执行单元122,还配置为在对应的非授权载波上竞争到资源后,立即发送SRS、PRACH前导序列、或者重复发送上行数据的前N个符号、ZC序列,PN序列中的一种;其中,N为小于等于6的正整数。
所述物理信道或信号采用全带宽映射方式。
实际应用时,所述接收单元121可由UE中的接收机实现,所述执行单元122可由UE中的CPU、MCU、DSP或FPGA结合接收机实现。
为实现本发明实施例的方法,本实施例还提供一种非授权资源的使用***,如图13所示,该***包括:第一基站131及一个以上第二基站132;其中,
所述第一基站131,配置为获取本小区所使用的非授权资源;向所述第二基站广播本小区的非授权资源配置信息,以便所述第二基站可以根据所述第一基站131小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
所述第二基站132,配置为接收所述第一基站131广播的非授权资源配置信息。
其中,所述第二基站132与所述第一基站131可以属于同一个运营商,也可以属于不同运营商。
该***还可以包括UE,配置为接收所述第一基站131发送的信令;并根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
需要说明的是:所述第一基站131及所述UE的具体处理过程已在上述实施例中描述,不再赘述。
本实施例中,基站获取本小区所使用的非授权资源;并向其它基站广播本小区的非授权资源配置信息,以便所述其它基站可以根据本小区的非授权资源配置信息,来确定自身小区的非授权资源配置;而UE接收基站发送的信令;根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号,如此,能解决LTE***在非授权载波频段进行操作时,各个小区发送物理信道或信号时的资源协调问题,在干扰协调/避免的前提下,不同运营商不同小区的基站或UE都可以在非授权载波上进行数据发送,提高了频谱效率。
本领域内的技术人员应明白,本发明的实施例可提供为方法、***、
或计算机程序产品。因此,本发明可采用硬件实施例、软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器和光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(***)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
基于此,本发明实施例还提供了一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行上述基站侧的非授权资源使用方法,或者执行上述UE侧的非授权资源使用方法。
以上所述,仅为本发明的较佳实施例而已,并非用于限定本发明的保护范围。
Claims (36)
- 一种非授权资源使用方法,应用于基站,所述方法包括:获取本小区所使用的非授权资源;向其它基站广播本小区的非授权资源配置信息,以使所述其它基站根据所述本小区的非授权资源配置信息,确定自身小区的非授权资源配置。
- 根据权利要求1所述的方法,其中,所述获取本小区所使用的非授权资源,包括:通过资源竞争的方式获得本小区所使用的非授权资源;或者,与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授权资源,获取本小区所使用的非授权资源。
- 根据权利要求2所述的方法,其中,所述通过竞争的方式获得本小区所使用的非授权资源,为:自身或触发下属用户设备UE在设置的非授权载波上进行资源竞争,以获得本小区所使用的非授权资源。
- 根据权利要求2所述的方法,其中,所述与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源,包括:通过采用不同的正交频分复用OFDM符号、不同时隙、不同子帧同样、不同周期和/或偏置时分、不同非授权频带频分、不同序列码分方式中的任意一种,获取本小区所使用的非授权资源;或者,将所有非授权资源分组或设置不同的集合,各组或集合包含的非授权资源全部正交或部分正交;通过采用不同于其它小区的组或集合的方式,获取本小区所使用的非授权资源。
- 根据权利要求4所述的方法,其中,所述通过采用不同于其它小区 的组或集合的方式,获取本小区所使用的非授权资源,包括:根据预先配置的小区和组或集合的对应关系,获取本小区所使用的非授权资源;或者,通过哈希函数或随机序列生成的随机数,结合函数或随机数与组或集合的对应关系,获取本小区所使用的非授权资源;或者,通过侦听公共信道或占用信号承载的其它小区使用的非授权资源组或集合指示信息,获取本小区所使用的非授权资源。
- 根据权利要求2所述的方法,其中,所述获取其它小区非授权资源的使用信息,包括:通过盲检获取其它小区非授权资源的使用信息;或者,通过侦听非授权公共信道上其它基站发送的非授权资源使用的相关信息,获知其它小区非授权资源的使用信息;或者,通过接收其他小区发送的占用信号,获知其它小区非授权资源的使用信息;或者,通过空口物理广播信道PBCH或***消息,获知其它小区非授权资源的使用指示信息。
- 根据权利要求2所述的方法,其中,所述其它小区非授权资源的使用信息通过显示信令承载或者通过序列和非授权资源的映射关系得到。
- 根据权利要求1所述的方法,其中,所述向其它基站广播本小区的非授权资源配置信息,为:通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
- 根据权利要求8所述的方法,其中,所述通过非授权公共信道广播本小区的非授权资源配置信息,包括:直接将所述非授权资源配置信息通过所述非授权公共信道承载;或者,所述非授权公共信道所在的频域位置映射所述非授权资源配置信息;频域位置与非授权资源配置信息一一对应;或者,通过所述非授权公共信道发送的序列映射所述非授权资源配置信息;序列与非授权配置信息一一对应;或者,通过所述非授权公共信道传输的预设的参考信号的图样,传输所述非授权资源配置信息。
- 根据权利要求8所述的方法,其中,所述占用信号具有以下至少一种特性:所述占用信号与所述非授权资源配置信息一一对应;所述占用信号的根序列与发送参考信号的根序列相同;所述占用信号循环移位指示本小区占用非授权资源发送数据信道的子帧数目;所述占用信号的图样指示物理随机接入信道PRACH信道的格式及周期、和/或信道探测参考信号SRS的符号索引。
- 根据权利要求1所述的方法,其中,所述其它基站包括:与广播本小区非授权资源配置信息的基站不同运营商的基站、以及与广播本小区非授权资源配置信息的基站相同运营商的基站。
- 根据权利要求1所述的方法,其中,广播的所述非授权资源配置信息包括:时域资源、频域资源、码域资源配置信息中一种或多种。
- 根据权利要求12所述的方法,其中,广播的所述非授权资源配置信息为SRS和/或PRACH的非授权资源配置信息。
- 根据权利要求13所述的方法,其中,广播的SRS的非授权资源配置信息为已有的SRS资源配置的全部或者部分信息,或者为新增的SRS的符号资源配置信息。
- 根据权利要求13所述的方法,其中,广播的PRACH的非授权资 源配置信息为已有的PRACH资源配置的全部或部分信息,或者为新增的PRACH序列资源配置信息。
- 根据权利要求1所述的方法,其中,所述方法还包括:通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
- 根据权利要求16所述的方法,其中,所述物理信令为下行控制信息DCI、或为无线资源控制RRC消息。
- 根据权利要求1所述的方法,其中,所述方法还包括:在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
- 一种非授权资源使用方法,应用于UE,所述方法包括:接收基站发送的信令;根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
- 根据权利要求19所述的方法,其中,当所述信令为资源抢占信令时,所述资源抢占信令通过以下至少一种方式实现:调度信令指示、NACK信息指示、定义的RRC消息承载。
- 根据权利要求19所述的方法,其中,当所述信令为非授权资源配置信令时,所述非授权资源配置信息通过公共信道、占用信号、PBCH或者物理信令承载。
- 根据权利要求21所述的方法,其中,所述物理信道或信号对应的所有非授权资源配置信息包含预设的第一部分非授权资源配置信息、第二部分非授权资源配置信息以及第三部分非授权资源配置信息;其中,所述第一部分非授权资源配置信息通过公共信道或者占用信号承载,所述第二部分非授权资源配置信息通过PBCH承载,所述第三部分非授权资源配置信息通过物理信令承载。
- 根据权利要求21所述的方法,其中,所述物理信令为:RRC消息、或为DCI。
- 根据权利要求19所述的方法,其中,所述信令为非授权资源配置信令;所述根据所述信令,在相应非授权载波上发送物理信道或信号,包括:根据非授权资源配置信息,通过时分复用TDM、频分复用FDM、码分复用CDM或者不同资源组的方式之一在非授权资源上发送物理信道或信号。
- 根据权利要求19所述的方法,其中,所述物理信道或信号采用全带宽映射方式。
- 根据权利要求19所述的方法,其中,在对应的非授权载波上竞争到资源后,所述方法还包括:立即发送SRS、PRACH前导序列、或者重复发送上行数据的前N个符号、ZC序列,PN序列中的一种;N为小于等于6的正整数。
- 一种基站,所述基站包括:获取单元以及广播单元;其中,所述获取单元,配置为获取本小区所使用的非授权资源;所述广播单元,配置为向其它基站广播本小区的非授权资源配置信息,以使所述其它基站根据所述本小区的非授权资源配置信息,来确定自身小区的非授权资源配置。
- 根据权利要求27所述的基站,其中,所述获取单元,配置为:通过资源竞争的方式获得本小区所使用的非授权资源;或者,与其它基站事先协调,将协调获得的预定义非授权资源作为本小区所使用的非授权资源;或者,获取其它小区非授权资源的使用信息;根据所述其它小区使用的非授权资源,获取本小区所使用的非授权资源。
- 根据权利要求27所述的基站,其中,所述广播单元,配置为:通过非授权公共信道、PBCH或占用信号广播本小区的非授权资源配置信息。
- 根据权利要求27所述的基站,其中,所述基站还包括:配置信息通知单元,配置为通过公共信道、PBCH、物理信令或者占用信号映射的方式通知下属UE非授权资源配置信息。
- 根据权利要求27所述的基站,其中,所述基站还包括:数据发送单元,配置为在所述非授权资源配置信息对应的非授权资源上发送信道或信号。
- 一种UE,所述UE包括:接收单元以及执行单元;其中,所述接收单元,配置为接收基站发送的信令;所述执行单元,配置为根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
- 根据权利要求32所述的UE,其中,所述执行单元,还配置为在对应的非授权载波上竞争到资源后,立即发送SRS、前导序列、或者重复发送上行数据的前N个符号、ZC序列,PN序列中的一种;N为小于等于6的正整数。
- 一种非授权资源使用***,所述***包括:第一基站及一个以上第二基站;其中,所述第一基站,配置为获取本小区所使用的非授权资源;向所述第二基站广播本小区的非授权资源配置信息,以使所述第二基站根据所述第一基站小区的非授权资源配置信息,来确定自身小区的非授权资源配置;所述第二基站,配置为接收所述第一基站广播的非授权资源配置信息。
- 根据权利要求34所述的***,其中,所述***还包括:UE,配置为接收所述第一基站发送的信令;并根据所述信令,在对应的非授权载波上进行资源竞争,或者在相应非授权资源上发送物理信道或信号。
- 一种计算机存储介质,所述计算机存储介质包括一组指令,当执行所述指令时,引起至少一个处理器执行如权利要求1至18任一项所述的非授权资源使用方法,或者执行如权利要求19至26任一项所述的非授权资源使用方法。
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