WO2017012430A1 - 一种测量参考信号的传输方法及系统 - Google Patents

一种测量参考信号的传输方法及系统 Download PDF

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Publication number
WO2017012430A1
WO2017012430A1 PCT/CN2016/084796 CN2016084796W WO2017012430A1 WO 2017012430 A1 WO2017012430 A1 WO 2017012430A1 CN 2016084796 W CN2016084796 W CN 2016084796W WO 2017012430 A1 WO2017012430 A1 WO 2017012430A1
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Prior art keywords
srs
frequency comb
configuration information
base station
frequency
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PCT/CN2016/084796
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English (en)
French (fr)
Inventor
王瑜新
李儒岳
鲁照华
陈艺戬
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中兴通讯股份有限公司
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Publication of WO2017012430A1 publication Critical patent/WO2017012430A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • This document relates to, but is not limited to, the field of communications, and in particular, to a transmission method and system for measuring a reference signal (SRS).
  • SRS reference signal
  • a radio frame in a Long Term Evolution (LTE) system includes a frame structure of a Frequency Division Duplex (FDD) mode and a Time Division Duplex (TDD) mode.
  • the frame structure of the FDD mode as shown in Figure 1, a 10 msec (ms) radio frame consists of twenty slots of length 0.5 ms, numbered 0-19, and slots 2i and 2i+1.
  • the frame structure of the TDD mode as shown in FIG.
  • a 10 ms radio frame is composed of two half frames of 5 ms length, one field includes five subframes of length 1 ms, and subframe i is defined as 2 time slots 2i and 2i+1 of length 0.5 ms, where i is an integer greater than or equal to 0.
  • one slot contains seven symbols with a length of 66.7 microseconds (us), wherein the CP length of the first symbol is 5.21us. The length of the CP of the remaining six symbols is 4.69us.
  • the extended cyclic prefix Extended Cyclic Prefix
  • one slot contains six symbols, and the CP length of all symbols is 16.67us.
  • a Physical Downlink Control Channel (PDCCH) is used to carry uplink and downlink scheduling information, and uplink power control information.
  • the format of the downlink control information (DCI, Downlink Control Information) is divided into DCI format 0, 1, 1A, 1B, 1C, 1D, 2, 2A, 3, 3A, etc., in the long-term evolution upgrade (LTE-A, LTE).
  • the -Advanced) Release 12 adds DCI format 2B, 2C, 2D to support multiple different applications and transport modes.
  • the base station eNB, e-Node-B
  • UE User Equipment
  • the terminal device accepts the configuration of higher layers (also referred to as configuring the UE through higher layer signaling).
  • the Sounding Reference Signal is a signal used by a terminal device and a base station to measure channel state information (CSI).
  • the UE periodically transmits the uplink SRS on the last data symbol of the transmission subframe according to parameters such as the frequency band indicated by the eNB, the frequency domain location, the sequence cyclic shift, the period, and the subframe offset.
  • the eNB determines the uplink CSI of the UE according to the received SRS, and performs operations such as frequency domain selection scheduling, closed loop power control, and the like according to the obtained CSI.
  • non-precoded SRS ie, antenna-specific SRS
  • PUSCH physical uplink shared channel
  • DMRS De Modulation Reference Signal
  • the base station can estimate the original CSI of the uplink by receiving the non-precoded SRS, and the pre-coded DMRS cannot enable the base station to estimate the original CSI of the uplink.
  • the UE transmits the non-precoded SRS by using multiple antennas the SRS resources required by each UE are increased, which results in a decrease in the number of UEs that can be simultaneously multiplexed in the system.
  • the UE may send the SRS by using the high-level signaling (also referred to as triggered by the trigger type 0) or the downlink control information (also referred to as triggering by the trigger type 1), and the periodic SRS is triggered based on the high-level signaling, and is based on the downlink.
  • the control information triggers a non-periodic SRS.
  • the manner of aperiodic transmission of SRS is added, which improves the utilization of SRS resources to some extent and improves the flexibility of resource scheduling.
  • the frequency domain starting position k 0 of the SRS can be determined according to the following formula:
  • k TC ⁇ 0,1 ⁇ is obtained by the high-level configuration parameter transmission frequency comb (Transmission Comb), indicating the index of the transmission frequency comb (Comb), and n b represents the frequency domain index, n b
  • the calculation includes hopping enable and hopping disable.
  • the calculation formula is: among them, The number of subcarriers included in one resource block (RB),
  • the calculation formula for k 0 ' is mainly to ensure that the bandwidth allowed to transmit SRS (corresponding to the maximum bandwidth of the SRS configuration, that is, m SRS, 0 ) is located at the center of the system bandwidth. It can be seen that the index value of the Comb is a parameter configured by the upper layer.
  • FIG. 3 it is assumed that the cell A and the cell B are synchronized, and the same cell-specific SRS period is used, if the two cells are independently configured. If the Cob index value of the UE belongs to the UE, there is no inter-cell cooperation. If the first Comb index value is the same, the SRS of the UE1 and the UE2 interfere with each other, and then the RRC (Radio Resource Control) message is used for a long time. The cycle will also interfere with each other. Especially for the case where the number of extended Combs is 4, after power boosting of the transmit power of the SRS, the SRS interference between cells becomes more intense, which seriously affects the channel estimation accuracy of the SRS.
  • the Cob index value of the UE belongs to the UE, there is no inter-cell cooperation. If the first Comb index value is the same, the SRS of the UE1 and the UE2 interfere with each other, and then the RRC (Radio Resource Control) message is used for a long time. The cycle will also interfere with each other.
  • Embodiments of the present invention provide a transmission method and system for measuring a reference signal, which can reduce inter-cell SRS interference in the related art.
  • An embodiment of the present invention provides a method for transmitting an SRS, including: setting, by a base station, configuration information of an SRS; the base station transmitting configuration information of the SRS to a terminal device, where the configuration information of the SRS includes: frequency combing of the SRS The configuration information is turned to enable, or the frequency comb position of the SRS is randomized to enable configuration information.
  • the method further includes: configuring, by the base station, the frequency of the RRC signaling according to the high layer radio resource control.
  • the comb index and the frequency comb index offset value of the SRS determine the frequency comb index of the new SRS.
  • determining, by the base station, the frequency comb index of the frequency comb index configured by the RRC signaling of the high layer radio resource control and the frequency comb index offset value of the SRS, the frequency comb index of the new SRS includes: when the frequency comb of the SRS is enabled If the configuration information is enabled, or the frequency comb position randomization enabling configuration information of the SRS is enabled, the base station determines the frequency comb index offset value of the SRS according to at least one of the following information:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(8n s +i) is the value corresponding to the sequence number 8n s +i in the pseudo-random sequence
  • n s is the slot number in a radio frame, used or As the initial value of the pseudo-random sequence, ID for the cell, Round the function down.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is the slot number within a radio frame.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is the slot number in one radio frame
  • n RNTI is the radio network temporary identifier RNTI of the terminal device.
  • the frequency comb index offset value of the SRS is: or, Where N TC is the number of frequency combs of SRS,
  • N TC is the number of frequency combs of SRS,
  • the cell ID The virtual cell ID configured for the base station to the terminal device.
  • determining, by the base station, the frequency comb index of the frequency comb index configured by the RRC signaling of the high layer radio resource control and the frequency comb index offset value of the SRS, the frequency comb index of the new SRS includes: when the frequency comb of the SRS is enabled If the configuration information is not enabled, or the frequency comb position randomization enable configuration information of the SRS is not enabled, the base station determines that the frequency comb index offset value of the SRS is 0.
  • determining, by the base station, the frequency comb index of the frequency comb index configured by the RRC signaling of the high layer radio resource control and the frequency comb index offset value of the SRS, the frequency comb index of the new SRS includes: when the base station is not configured with the frequency combing of the SRS When the parameter or the frequency comb position randomization parameter of the SRS is rotated, the base station determines that the frequency comb index offset value of the SRS is 0.
  • the embodiment of the present invention further provides a method for transmitting an SRS, including: receiving, by a terminal device, configuration information of an SRS sent by a base station; the terminal device processing and transmitting an SRS according to the configuration information of the SRS; wherein, the configuration information of the SRS Including: SRS frequency comb jump enable configuration information, or SRS frequency comb position randomization enable configuration information.
  • the processing, by the terminal device, the SRS according to the configuration information of the SRS includes: determining, by the terminal device, a frequency of a new SRS according to a frequency comb index configured by the high layer RRC signaling and a frequency comb index offset value of the SRS. Comb index.
  • determining, by the terminal device, the frequency comb index of the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS, the frequency comb index of the new SRS includes: when the frequency comb transition enable configuration information of the SRS To enable, or when the frequency comb position randomization enable configuration information of the SRS is enabled, the terminal device determines the frequency comb index offset value of the SRS according to at least one of the following information:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(8n s +i) is the value corresponding to the sequence number 8n s +i in the pseudo-random sequence
  • n s is the slot number in a radio frame, used or As the initial value of the pseudo-random sequence, For the cell ID, Round the function down.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is the slot number within a radio frame.
  • the frequency comb index offset value of the SRS is:
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is the slot number within a radio frame
  • n RNTI is the radio network temporary identifier of the terminal device.
  • the frequency comb index offset value of the SRS is: or Where N TC is the number of frequency combs of SRS,
  • N TC is the number of frequency combs of SRS,
  • the virtual cell ID configured for the base station to the terminal device.
  • the processing, by the terminal device, the SRS according to the configuration information of the SRS includes: when the frequency comb jump enable configuration information of the SRS is not enabled, or the frequency comb position of the SRS is randomized.
  • the terminal device determines that the frequency comb index offset value of the SRS is 0.
  • the method further includes: when the base station does not configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS, the terminal device determines that the frequency comb index offset value of the SRS is 0.
  • the embodiment of the present invention further provides a method for processing and transmitting an SRS, including: a hopping manner of a frequency comb of an SRS that the first base station and the second base station interact with.
  • the hopping manner of the frequency comb of the SRS includes at least one of the following:
  • the frequency comb index of the SRS sequentially jumps from the minimum value to the maximum value
  • the frequency comb index of the SRS sequentially jumps from the maximum value to the minimum value
  • the frequency comb index of the SRS sequentially changes from the minimum value to the maximum value to the minimum value.
  • the frequency comb index of the SRS is cyclically changed from the maximum value to the minimum value to the maximum value
  • the frequency comb index of the SRS is related to the cell ID.
  • the embodiment of the present invention further provides an SRS transmission system, which is applied to a base station, and includes: a setting module, configured to set configuration information of the SRS; and a sending module, configured to send configuration information of the SRS to the terminal device;
  • the SRS configuration information includes: SRS frequency comb jump enable configuration The information, or the random comb position of the SRS, enables the configuration information.
  • the system further includes: a processing module, configured to determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • a processing module configured to determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • the processing module is configured to: when the frequency comb jump enable configuration information of the SRS is enabled, or the frequency comb position randomization enable configuration information of the SRS is enabled, Determining the frequency comb index offset value of the SRS according to at least one of the following information:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the processing module is configured to: when the frequency comb jump enable configuration information of the SRS is not enabled, or the frequency comb position randomization enable configuration information of the SRS is not enabled.
  • the frequency comb index offset value of the SRS is 0.
  • the processing module is configured to: when the base station does not configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS, determine that the frequency comb index offset value of the SRS is 0.
  • the embodiment of the present invention further provides an SRS transmission system, which is applied to a terminal device, and includes: a receiving module, configured to receive configuration information of an SRS sent by a base station; and a processing transmission module, configured to process and transmit according to the configuration information of the SRS.
  • the SRS configuration information includes: the frequency comb jump enable configuration information of the SRS, or the frequency comb position randomization enable configuration information of the SRS.
  • the processing transmission module is configured to: determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • the processing transmission module is configured to: when the frequency comb jump enable configuration information of the SRS is enabled, or the frequency comb position randomization enable configuration information of the SRS is enabled Determining the frequency comb index offset value of the SRS according to at least one of the following information:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the processing transmission module is configured to: when the frequency comb jump enable configuration information of the SRS is not enabled, or the frequency comb position randomization enable configuration information of the SRS is not enabled When possible, determine the frequency comb index offset value of the SRS is 0.
  • the processing transmission module is further configured to determine that the frequency comb index offset value of the SRS is 0 when the base station does not configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS.
  • the embodiment of the present invention further provides a processing and sending system for an SRS, comprising: a first base station and a second base station, wherein the first base station and the second base station cooperate to cooperate with a frequency comb hopping manner of the SRS.
  • the hopping manner of the frequency comb of the SRS includes at least one of the following:
  • the frequency comb index of the SRS sequentially jumps from the minimum value to the maximum value
  • the frequency comb index of the SRS sequentially jumps from the maximum value to the minimum value
  • the frequency comb index of the SRS sequentially changes from the minimum value to the maximum value to the minimum value.
  • the frequency comb index of the SRS is cyclically changed from the maximum value to the minimum value to the maximum value
  • the frequency comb index of the SRS is related to the cell ID.
  • the base station sets the configuration information of the SRS, and sends the configuration information of the SRS to the terminal device, where the configuration information of the SRS includes: the frequency comb jump enable configuration information of the SRS, or the frequency comb position of the SRS. Randomization enables configuration information.
  • the frequency comb index of the randomized SRS of the terminal device is implemented, and the SRS interference between the relevant cells can be reduced.
  • the frequency comb index of the SRS is randomized, the inter-cell SRS interference is reduced, the channel estimation accuracy of the SRS is improved, and the overall performance of the system is improved.
  • FIG. 1 is a schematic diagram of a frame structure of an FDD mode in the related art
  • FIG. 2 is a schematic diagram of a frame structure of a TDD mode in the related art
  • 3 is a schematic diagram of inter-cell interference of SRS in the related art
  • FIG. 5 is a flowchart of a method for transmitting an SRS according to Embodiment 2 of the present invention.
  • FIG. 6 is a schematic structural diagram of a transmission system of an SRS applied to a base station according to an embodiment of the present disclosure
  • FIG. 7 is a block diagram of a transmission system component of an SRS applied to a terminal device according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for transmitting an SRS according to Embodiment 1 of the present invention. As shown in FIG. 4, the SRS transmission method provided in this embodiment includes the following steps:
  • Step 11 The base station sets the configuration information of the SRS.
  • the configuration information of the SRS includes: the frequency comb jump enable configuration information of the SRS, or the frequency comb position randomization enable configuration information of the SRS.
  • Step 12 The base station sends configuration information of the SRS to the terminal device.
  • the method further includes: determining, by the base station, the frequency comb index of the frequency comb index configured by the RRC (Radio Resource Control) signaling and the frequency comb index offset value of the SRS, and determining the frequency comb index of the new SRS. .
  • the terminal device sends an SRS sequence in a frequency domain position corresponding to the SRS frequency comb index according to the determined frequency comb index of the new SRS.
  • the base station determines the frequency comb index of the SRS according to at least one of the following information: Offset value:
  • ID Cell identification
  • a virtual cell ID configured by the base station for the terminal device
  • Radio Network Temporary Identity of the terminal device.
  • the base station or the terminal device determines that the frequency comb index offset value of the SRS is 0. .
  • the base station or the terminal device determines that the frequency comb index offset value of the SRS is 0.
  • FIG. 5 is a flowchart of a method for transmitting an SRS according to Embodiment 2 of the present invention. As shown in FIG. 5, the SRS transmission method provided in this embodiment includes the following steps:
  • Step 21 The terminal device receives configuration information of the SRS sent by the base station.
  • the configuration information of the SRS includes: the frequency comb jump enable configuration information of the SRS, or the frequency comb position randomization enable configuration information of the SRS.
  • Step 22 The terminal device processes and transmits the SRS according to the configuration information of the SRS.
  • Step 22 includes: the terminal device determines a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS. In addition, the terminal device transmits the SRS sequence in the frequency domain position corresponding to the SRS frequency comb index.
  • the terminal device determines the frequency comb of the SRS according to at least one of the following information. Index offset value:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the terminal device determines that the frequency comb index offset value of the SRS is 0.
  • the method further includes: when the base station does not configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS, the terminal device determines that the frequency comb index offset value of the SRS is 0.
  • the base station receives and measures the SRS signal sent by the terminal device. If the SRS signal to interference plus noise ratio (SINR, Signal to Interference plus Noise Ratio) is greater than or equal to a threshold value, such as 5 dB, the base station considers The SRS signal quality of the terminal device is good enough, and the frequency comb response parameter of the SRS or the frequency comb position randomization parameter of the SRS need not be configured for the terminal device, or the frequency comb jump enable configuration information or SRS of the SRS is configured.
  • SINR Signal to Interference plus Noise Ratio
  • the frequency comb position randomization enable configuration information is not enabled; when the quality of the SRS signal received by the base station is less than 5 dB, the SRS interference of the terminal device is considered to be relatively large, and the frequency comb jump enable configuration information of the SRS or The frequency comb position randomization enable configuration information of the SRS is enabled.
  • the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS is a user-specific parameter.
  • the base station does not need to configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS for these lower versions of the user, or These lower version users default to the SRS frequency comb offset value of zero.
  • the terminal device or the base station determines the frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • the frequency comb index of the new SRS is, for example, (k TC + ⁇ ).
  • modN TC where k TC is the frequency comb index configured for the upper layer RRC signaling, ⁇ is the SRS frequency comb index offset value, N TC is the number of frequency combs of the SRS, and mod is the modulo function.
  • the frequency comb index offset value of the SRS can be determined according to one of the following four ways:
  • N TC is the number of frequency combs of SRS
  • c(8n s +i) is the value corresponding to the sequence number 8n s +i in the pseudo-random sequence
  • n s is the slot number in a radio frame (the slot number is wireless)
  • ID for the cell a round-down function, where the present embodiment includes, but is not limited to, generating a pseudo-random sequence by a pseudo-random sequence generator at the beginning of each radio frame;
  • the frequency comb index configured by cell 1 and cell 2 through high-layer RRC signaling is 0, so cell 1 and cell 2 interfere with each other;
  • N TC is 4, cell 1 has a cell ID of 1, use
  • the pseudo-random sequence c(i) after initializing the pseudo-random sequence generator is 001001110000..., the cell ID of cell 2 is 2, and the pseudo-random sequence is 101001110000..., when the slot number n s is 0, it can be calculated
  • the frequency comb index offset values of the SRSs of cell 1 and cell 2 are 0 and 1, respectively, and the new SRS frequency comb index is determined to be 0 and 1 by the formula (k TC + ⁇ ) mod N TC , thereby avoiding cell 1 and SRS interference between cells 2;
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is a slot number within a radio frame, where the embodiment includes, but is not limited to, generating a pseudo-random sequence by a pseudo-random sequence generator at the beginning of each radio frame;
  • N TC is the number of frequency combs of SRS
  • c(i) is the value corresponding to the number i in the pseudo-random sequence.
  • n s is the slot number in one radio frame
  • n RNTI is the RNTI of the terminal device, where the embodiment includes but is not limited to the pseudo-random sequence generator at the beginning of each radio frame. Generate a pseudo-random sequence.
  • the frequency comb index offset of the SRS is: or, among them, For the cell ID, a virtual cell ID configured for the base station to the terminal device; optionally, when the base station is not configured Or the terminal device did not receive it.
  • UE1 is the user of cell A
  • UE2 is the user of cell B
  • cell A and cell B are synchronous cells.
  • the k TCs of UE1 and UE2 are both configured to be 0, and the SRS period is the same as 5 milliseconds, SRS.
  • the occupied frequency bands are also the same. If the frequency combs of the SRS are not configured for UE1 and UE2 or the frequency comb position of the SRS is randomized, the SRSs of UE1 and UE2 will interfere with each other before the next new kTC configuration, thereby affecting the SRS channel. Estimated accuracy.
  • the N TC is 4
  • the cell ID of the cell A is 1
  • the cell ID of the cell B is 5.
  • the new frequency comb index of the UE1 is 0, and the new frequency comb index of the UE2 is calculated. 2, thereby avoiding mutual interference between the SRS of UE1 and the SRS of UE2.
  • the terminal device or the base station determines that the frequency comb index offset value of the SRS is 0. .
  • the terminal device or the base station determines that the frequency comb index offset value of the SRS is 0.
  • the embodiment provides a method for processing and transmitting an SRS, including: a hopping manner of a frequency comb of an SRS that the first base station and the second base station interact with.
  • the hopping mode of the frequency comb of the SRS includes at least one of the following:
  • the frequency comb index of the SRS sequentially jumps from the minimum value to the maximum value
  • the frequency comb index of the SRS sequentially jumps from the maximum value to the minimum value
  • the frequency comb index of the SRS sequentially changes from the minimum value to the maximum value to the minimum value.
  • the frequency comb index of the SRS is cyclically changed from the maximum value to the minimum value to the maximum value
  • the frequency comb index of the SRS is related to the cell ID.
  • the frequency comb index of the SRS may be 0-1-2-3-0-1-2... from the minimum to the maximum value; the frequency comb index of the SRS is sequentially from the maximum
  • the value to the minimum value jump can be 3-2-1-0-3-2-1...; the frequency comb index of the SRS is cyclically changed from the minimum value to the maximum value to the minimum value. 2-1-0...; The frequency comb index of SRS is cyclically changed from maximum value to minimum value to maximum value 3-2-1-0-1-2-3....
  • the hopping law is similar to the hopping rule of the frequency comb of the SRS described above.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the above method.
  • the embodiment of the present invention further provides an SRS transmission system, which is applied to a base station, as shown in FIG. 6, and includes: a setting module, configured to set SRS configuration information; and a sending module, configured to send the SRS to the terminal device.
  • the configuration information of the SRS includes: a frequency comb jump enable configuration information of the SRS, or a frequency comb position randomization enable configuration information of the SRS.
  • the system further includes: a processing module, configured to determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • a processing module configured to determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS.
  • the processing module is configured to: when the frequency comb jump enable configuration information of the SRS is enabled, or the frequency comb position randomization enable configuration information of the SRS is enabled, according to at least one of the following information Determine the frequency comb index offset value of the SRS:
  • a virtual cell ID configured by the base station for the terminal device
  • Determining the frequency comb index offset value of the SRS is 0 when the frequency combing enable configuration information of the SRS is not enabled, or the frequency comb position randomization enabling configuration information of the SRS is not enabled. ;
  • the base station When the base station does not configure the frequency comb jump parameter of the SRS or the frequency comb position randomization parameter of the SRS, it is determined that the frequency comb index offset value of the SRS is 0.
  • the embodiment of the present invention further provides an SRS transmission system, which is applied to a terminal device, as shown in FIG. 7, comprising: a receiving module, configured to receive configuration information of an SRS sent by a base station; and processing a transmission module, configured to be The configuration information of the SRS processes and transmits the SRS; wherein, the configuration information of the SRS includes: a frequency comb jump enable configuration information of the SRS, or a frequency comb position of the SRS Set randomization to enable configuration information.
  • the processing transmission module is configured to: determine a frequency comb index of the new SRS according to the frequency comb index configured by the high layer RRC signaling and the frequency comb index offset value of the SRS. Specifically, when the frequency comb jump enable configuration information of the SRS is enabled, or the frequency comb position randomization enable configuration information of the SRS is enabled, the processing transmission module is set to be based on at least the following One of the information determines the frequency comb index offset value of the SRS:
  • a virtual cell ID configured by the base station for the terminal device
  • the wireless network of the terminal device temporarily identifies the RNTI.
  • the processing transmission module is set to determine the frequency comb of the SRS.
  • the index offset value is 0.
  • the processing transmission module is set to determine that the frequency comb index offset value of the SRS is 0.
  • an embodiment of the present invention further provides a SRS processing and sending system, including: a first base station and a second base station, wherein the first base station and the second base station cooperate to cooperate with a frequency comb hopping manner of the SRS.
  • the hopping mode of the frequency comb of the SRS includes at least one of the following:
  • the frequency comb index of the SRS sequentially jumps from the minimum value to the maximum value
  • the frequency comb index of the SRS sequentially jumps from the maximum value to the minimum value
  • the frequency comb index of the SRS sequentially changes from the minimum value to the maximum value to the minimum value.
  • the frequency comb index of the SRS is cyclically changed from the maximum value to the minimum value to the maximum value
  • the frequency comb index of the SRS is related to the cell ID.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the above technical solution randomizes the frequency comb index of the SRS, reduces the inter-cell SRS interference, improves the channel estimation accuracy of the SRS, and further improves the overall performance of the system.

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Abstract

一种测量参考信号的传输方法及系统，包括：基站设置SRS的配置信息，并向终端设备发送SRS的配置信息，其中，SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。上述技术方案公开的测量参考信号的传输方法及系统，能够减小相关技术中小区间SRS干扰。

Description

一种测量参考信号的传输方法及系统 技术领域
本文涉及但不限于通信领域，尤其涉及一种测量参考信号(SRS，Sounding Reference Signal)的传输方法及系统。
背景技术
长期演进(LTE，Long Term Evolution)系统中的无线帧(radio frame)包括频分双工(FDD，Frequency Division Duplex)模式和时分双工(TDD，Time Division Duplex)模式的帧结构。FDD模式的帧结构，如图1所示，一个10毫秒(ms)的无线帧由二十个长度为0.5ms，编号0～19的时隙(slot)组成，时隙2i和2i+1组成长度为1ms的子帧(subframe)i，其中，i为大于或等于0的整数。TDD模式的帧结构，如图2所示，一个10ms的无线帧由两个长为5ms的半帧(half frame)组成，一个半帧包括5个长度为1ms的子帧，子帧i定义为2个长为0.5ms的时隙2i和2i+1，其中，i为大于或等于0的整数。
在上述两种帧结构里，对于标准循环前缀(Normal CP，Normal Cyclic Prefix)，一个时隙包含7个长度为66.7微秒(us)的符号，其中，第一个符号的CP长度为5.21us，其余6个符号的CP长度为4.69us；对于扩展循环前缀(Extended CP，Extended Cyclic Prefix)，一个时隙包含6个符号，所有符号的CP长度均为16.67us。每个子帧i由2个时隙2i和2i+1表示，其中，i为大于或等于0的整数，每个时隙长为Tslot＝15360·Ts＝0.5ms。
在LTE系统中，物理下行控制信道(PDCCH，Physical Downlink Control Channel)用于承载上、下行调度信息，以及上行功率控制信息。下行控制信息(DCI，Downlink Control Information)的格式(format)分为DCI format 0、1、1A、1B、1C、1D、2、2A、3，3A等，在长期演进升级(LTE-A，LTE-Advanced)版本(Release)12中又增加了DCI format 2B、2C、2D以支持多种不同应用和传输的模式。基站(eNB，e-Node-B)可以通过下行控制信息配置终端设 备(UE，User Equipment)，或者，终端设备接受高层(higher layers)的配置(也称为通过高层信令配置UE)。
测量参考信号(SRS，Sounding Reference Signal)是一种终端设备与基站间用来测量无线信道状态信息(CSI，Channel State Information)的信号。在长期演进系统中，UE按照eNB指示的频带、频域位置、序列循环移位、周期和子帧偏置等参数，定时在发送子帧的最后一个数据符号上发送上行SRS。eNB根据接收到的SRS判断UE上行的CSI，并根据得到的CSI进行频域选择调度、闭环功率控制等操作。
在相关的LTE-A版本10(LTE-A Release 10)的研究中提出：在上行通信中，应该使用非预编码的SRS(即，天线专有的SRS)，而对物理上行共享信道(PUSCH，Physical Uplink Shared Channel)的用于解调的参考信号(DMRS，De Modulation Reference Signal)则进行预编码。基站通过接收非预编码的SRS，可估计出上行的原始CSI，而经过了预编码的DMRS则不能使基站估计出上行的原始CSI。此时，当UE使用多天线发送非预编码的SRS时，每个UE所需要的SRS资源都会增加，也就造成了系统内可以同时复用的UE数量下降。UE可通过高层信令(也称为通过trigger type 0触发)或下行控制信息(也称为通过trigger type 1触发)这两种触发方式发送SRS，基于高层信令触发的为周期SRS，基于下行控制信息触发的为非周期SRS。在LTE-A Release 10中增加了非周期发送SRS的方式，一定程度上改善了SRS资源的利用率，提高了资源调度的灵活性。
在相关协议里，SRS的频域起始位置k0可根据下式来确定：
Figure PCTCN2016084796-appb-000001
其中，
Figure PCTCN2016084796-appb-000002
其中，
Figure PCTCN2016084796-appb-000003
为向下取整函数，kTC∈{0,1}由高层配置的参数传输频率梳(Transmission Comb)得到，表示传输频率梳(Comb)的索引，而nb表示频域索引，nb的计算包括跳转使能(hopping enable)和跳转不使能(hopping disable)两种情况，
Figure PCTCN2016084796-appb-000004
的计算公式为：
Figure PCTCN2016084796-appb-000005
其中，
Figure PCTCN2016084796-appb-000006
为一个资源块(RB)中包含的子载波个数，
Figure PCTCN2016084796-appb-000007
为上行带宽，k0'的计算公式主要是为了保证，允许发送SRS的带宽(对应于 SRS配置的最大带宽，也就是mSRS,0)位于系统带宽的中心。由此可见，Comb的索引值为高层配置的参数，以图3为例，假定小区A和小区B同步，且使用相同的小区专有(cell-specific)SRS周期，如果两个小区各自独立配置所属UE的Comb索引值，则不存在小区间的协作，如果首次的Comb索引值相同会导致UE1与UE2的SRS互相干扰，那么后续很长时间内(无线资源控制(RRC，Radio Resource Control)信令周期内)同样也会互相干扰。特别是对于扩展Comb的数量为4这种情况，对SRS的发射功率进行功率推进(power boosting)以后，小区间的SRS干扰会变得更加强烈，严重影响SRS的信道估计准确度。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种测量参考信号的传输方法及系统，能够减小相关技术中小区间SRS干扰。
本发明实施例提供一种SRS的传输方法，包括：基站设置SRS的配置信息；所述基站向终端设备发送所述SRS的配置信息；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
可选地，所述基站设置SRS的配置信息之后，或者，所述基站向终端设备发送所述SRS的配置信息之后，该方法还包括：所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
可选地，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，所述基站根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000008
其中，NTC为SRS的频率梳数量，c(8ns+i)为伪随机序列中序号为8ns+i对应的数值，ns为一个无线帧内的时隙号，使用
Figure PCTCN2016084796-appb-000009
或者
Figure PCTCN2016084796-appb-000010
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000011
为小区标识ID，
Figure PCTCN2016084796-appb-000012
为向下取整函数。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000013
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000014
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000015
为小区ID，
Figure PCTCN2016084796-appb-000016
为向下取整函数，ns为一个无线帧内的时隙号。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000017
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000018
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000019
为小区ID，
Figure PCTCN2016084796-appb-000020
为向下取整函数，ns为一个无线帧内的时隙号，nRNTI为终端设备的无线网络临时标识RNTI。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000021
或者，
Figure PCTCN2016084796-appb-000022
其中，NTC为SRS的频率梳数量，
Figure PCTCN2016084796-appb-000023
为小区ID，
Figure PCTCN2016084796-appb-000024
为基站向终端设备配置的虚拟小区ID。
可选地，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，所述基站确定SRS的频率梳索引偏置值为0。
可选地，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，所述基站确定SRS的频率梳索引偏置值为0。
本发明实施例还提供一种SRS的传输方法，包括：终端设备接收基站发送的SRS的配置信息；所述终端设备根据所述SRS的配置信息处理并传输SRS；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
可选地，所述终端设备根据所述SRS的配置信息处理并传输SRS包括：所述终端设备根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
可选地，所述终端设备根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，所述终端设备根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000025
其中，NTC为SRS的频率梳数量，c(8ns+i)为伪随机序列中序号为8ns+i对应的数值，ns为一个无线帧内的时隙号，使用
Figure PCTCN2016084796-appb-000026
或者
Figure PCTCN2016084796-appb-000027
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000028
为小区ID，
Figure PCTCN2016084796-appb-000029
为向下取整函数。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000030
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000031
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000032
为小区ID，
Figure PCTCN2016084796-appb-000033
为向下取整函数，ns为一个无线帧内的时隙号。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000034
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000035
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000036
为小区ID，
Figure PCTCN2016084796-appb-000037
为向下取整函数，ns为一个无线帧内的时隙号，nRNTI为终端设备的无线网络临时标识。
可选地，所述SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000038
或者
Figure PCTCN2016084796-appb-000039
其中，NTC为SRS的频率梳数量，
Figure PCTCN2016084796-appb-000040
为小区ID，
Figure PCTCN2016084796-appb-000041
为基站向终端设备配置的虚拟小区ID。
可选地，所述终端设备根据所述SRS的配置信息处理并传输SRS包括：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，所述终端设备确定SRS的频率梳索引偏置值为0。
可选地，该方法还包括：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，所述终端设备确定SRS的频率梳索引偏置值为0。
本发明实施例还提供一种SRS的处理和发送方法，包括：第一基站与第二基站交互协作SRS的频率梳的跳变方式。
可选地，所述SRS的频率梳的跳变方式，包括以下至少一种：
SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区ID有关。
本发明实施例还提供一种SRS的传输系统，应用于基站，包括：设置模块，设置为设置SRS的配置信息；发送模块，设置为向终端设备发送所述SRS的配置信息；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置 信息，或者，SRS的频率梳位置随机化使能配置信息。
可选地，该系统还包括：处理模块，设置为根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
可选地，所述处理模块，是设置为：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
可选地，所述处理模块，是设置为：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，确定SRS的频率梳索引偏置值为0。
可选地，所述处理模块，是设置为：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，确定SRS的频率梳索引偏置值为0。
本发明实施例还提供一种SRS的传输系统，应用于终端设备，包括：接收模块，设置为接收基站发送的SRS的配置信息；处理传输模块，设置为根据所述SRS的配置信息处理并传输SRS；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
可选地，所述处理传输模块，是设置为：根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
可选地，所述处理传输模块，是设置为：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
可选地，所述处理传输模块，是设置为：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，确定SRS的频率梳索引偏置值为0。
可选地，所述处理传输模块，还设置为当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，确定SRS的频率梳索引偏置值为0。
本发明实施例还提供一种SRS的处理和发送系统，，包括：第一基站以及第二基站，第一基站与第二基站交互协作SRS的频率梳的跳变方式。
可选地，所述SRS的频率梳的跳变方式，包括以下至少一种：
SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区ID有关。
在本发明实施例中，基站设置SRS的配置信息，并向终端设备发送SRS的配置信息，其中，SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。通过本发明实施例，实现了终端设备随机化SRS的频率梳索引，能够减小相关小区间SRS干扰。本发明实施例通过对SRS的频率梳索引进行随机化，降低了小区间SRS干扰，提高了SRS的信道估计准确度，进而达到了提高系统整体性能的效果。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为相关技术中FDD模式的帧结构示意图；
图2为相关技术中TDD模式的帧结构示意图；
图3为相关技术中SRS的小区间干扰示意图；
图4为本发明实施例一提供的SRS的传输方法的流程图；
图5为本发明实施例二提供的SRS的传输方法的流程图；
图6为本发明实施例提供的应用于基站的SRS的传输系统组成模块图；
图7为本发明实施例提供的应用于终端设备的SRS的传输系统组成模块图。
本发明的实施方式
以下结合附图对本发明的实施例进行详细说明，应当理解，以下所说明的实施例仅用于说明和解释本发明，并不用于限定本发明。
实施例一
图4为本发明实施例一提供的SRS的传输方法的流程图。如图4所示，本实施例提供的SRS的传输方法包括以下步骤：
步骤11：基站设置SRS的配置信息。其中，SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
步骤12：基站向终端设备发送SRS的配置信息。
于步骤11或步骤12之后，该方法还包括：基站根据高层无线资源控制(RRC，Radio Resource Control)信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。其中，终端设备根据确定的新的SRS的频率梳索引，在该SRS频率梳索引对应的频域位置发送SRS序列。
具体而言，当SRS的频率梳跳转使能配置信息为使能，或者，SRS的频率梳位置随机化使能配置信息为使能时，基站根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识(ID)；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识(RNTI，Radio Network Temporary Identity)。
当SRS的频率梳跳转使能配置信息为不使能，或者，SRS的频率梳位置随机化使能配置信息为不使能时，基站或终端设备确定SRS的频率梳索引偏置值为0。
当基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，基站或终端设备确定SRS的频率梳索引偏置值为0。
实施例二
图5为本发明实施例二提供的SRS的传输方法的流程图。如图5所示，本实施例提供的SRS的传输方法包括以下步骤：
步骤21：终端设备接收基站发送的SRS的配置信息。其中，SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
步骤22：终端设备根据SRS的配置信息处理并传输SRS。
步骤22包括：终端设备根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。此外，终端设备在该SRS频率梳索引对应的频域位置发送SRS序列。
具体而言，当SRS的频率梳跳转使能配置信息为使能，或者，SRS的频率梳位置随机化使能配置信息为使能时，终端设备根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
当SRS的频率梳跳转使能配置信息为不使能，或者，SRS的频率梳位置随机化使能配置信息为不使能时，终端设备确定SRS的频率梳索引偏置值为0。
此外，该方法还包括：当基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，终端设备确定SRS的频率梳索引偏置值为0。
实施例三
于本实施例中，基站接收并测量终端设备发送的SRS信号，如果该SRS的信号与干扰加噪声比(SINR，Signal to Interference plus Noise Ratio)大于或等于一门槛值，比如5dB，则基站认为该终端设备的SRS信号质量已经足够好，无需对该终端设备配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数，或者，配置SRS的频率梳跳转使能配置信息或SRS的频率梳位置随机化使能配置信息为不使能；当基站接收到的SRS信号质量小于5dB时，则认为该终端设备的SRS干扰比较大，可以配置SRS的频率梳跳转使能配置信息或SRS的频率梳位置随机化使能配置信息为使能。
其中，SRS的频率梳跳转参数或SRS的频率梳位置随机化参数为用户专有的参数。
对于低版本的用户，比如LTE-A R12版本之前的用户(包括版本R12)，则基站无需对这些低版本的用户配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数，或者，这些低版本的用户默认SRS的频率梳偏置值为0。
实施例四
于本实施例中，终端设备或者基站根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
具体而言，当SRS的频率梳跳转使能配置信息为使能，或者SRS的频率梳位置随机化使能配置信息为使能时，新的SRS的频率梳索引例如为(kTC+Δ)modNTC，其中，kTC为高层RRC信令配置的频率梳索引，Δ为SRS频率梳索引偏置值，NTC为SRS的频率梳数量，mod为取模函数。于此，可以根据以下四种方式之一来确定SRS的频率梳索引偏置值：
方式一：SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000042
其中，NTC为SRS的频率梳数量，c(8ns+i)为伪随机序列中序号为8ns+i对应的数值，ns为一个无线帧内的时隙号(时隙号为无线帧中时隙的编号，如图1中的时隙编号0～19)，使用
Figure PCTCN2016084796-appb-000043
或者
Figure PCTCN2016084796-appb-000044
作为伪随机序列的初始值，为小区标识ID，
Figure PCTCN2016084796-appb-000046
为向下取整函数，其中，本实施例包括但不限于在每个无线帧的开始时刻通过伪随机序列生成器生成伪随机序列；
以方式一为例，假定小区1和小区2通过高层RRC信令配置的频率梳索引都为0，因此小区1和小区2会相互干扰；假定NTC为4，小区1的小区ID为1，使用
Figure PCTCN2016084796-appb-000047
对伪随机序列产生器进行初始化后的伪随机序列c(i)为001001110000…，小区2的小区ID为2，伪随机序列为101001110000…，则在时隙号ns为0时，可计算出小区1和小区2的SRS的频率梳索引偏置值为分别为0和1，通过公式(kTC+Δ)modNTC确定新的SRS频率梳索引分别为0和1，从而避免了小区1和小区2之间的SRS干扰；
方式二：SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000048
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000049
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000050
为小区ID，
Figure PCTCN2016084796-appb-000051
为向下取整函数，ns为一个无线帧内的时隙号，其中，本实施例包括但不限于在每个无线帧的开始时刻通过伪随机序列生成器生成伪随机序列；
方式三：SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000052
其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
Figure PCTCN2016084796-appb-000053
作为伪随机序列的初始值，
Figure PCTCN2016084796-appb-000054
为小区ID，
Figure PCTCN2016084796-appb-000055
为向下取整函数，ns为一个无线帧内的时隙号，nRNTI为终端设备的RNTI，其中，本实施例包括但不限于在每个无线帧的开始时刻通过伪随机序列生成器生成伪随机序列。
方式四：SRS的频率梳索引偏置值为：
Figure PCTCN2016084796-appb-000056
或者，
Figure PCTCN2016084796-appb-000057
其中，
Figure PCTCN2016084796-appb-000058
为小区ID，
Figure PCTCN2016084796-appb-000059
为基站向终端设备配置的虚拟小区ID；可选地，当基站没有配置
Figure PCTCN2016084796-appb-000060
或者终端设备没接收到
Figure PCTCN2016084796-appb-000061
时，则
Figure PCTCN2016084796-appb-000062
举例而言，假定UE1为小区A的用户，UE2为小区B的用户，小区A和小区B为同步小区，假定UE1和UE2的kTC都被配置为0，SRS的周期相同为5毫秒，SRS的占用频带也相同，如果不对UE1和UE2配置SRS的频率梳跳转或者SRS的频率梳位置随机化，则在下一次新的kTC配置之前，UE1和UE2的SRS都会相互干扰，从而影响SRS信道估计的准确度。如果采用上述的方式一，假定NTC为4，小区A的小区ID为1，小区B的小区ID为5，通过方式一可计算出UE1新的频率梳索引为0，UE2新的频率梳索引为2，从而避免了UE1的SRS和UE2的SRS相互干扰。
当SRS的频率梳跳转使能配置信息为不使能，或者，SRS的频率梳位置随机化使能配置信息为不使能时，终端设备或者基站确定SRS的频率梳索引偏置值为0。
当基站没有配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，终端设备或基站确定SRS的频率梳索引偏置值为0。
实施例五
本实施例提供一种SRS的处理和发送方法，包括：第一基站与第二基站交互协作SRS的频率梳的跳变方式。
其中，所述SRS的频率梳的跳变方式，包括以下至少一种：
SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区ID有关。
比如，假定SRS的频率梳数量为4，SRS的频率梳索引依次从最小值到最大值跳变可以为0－1－2－3－0－1－2…；SRS的频率梳索引依次从最大值到最小值跳变可以为3－2－1－0－3－2－1…；SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变0－1－2－3－2－1－0…；SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变3－2－1－0－1－2－3…。
如果SRS的频率梳数量为2，其跳变规律与上述SRS的频率梳数量为4的跳变规律类似。
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中存储有计算机可执行指令，所述计算机可执行指令用于执行上述方法。
此外，本发明实施例还提供一种SRS的传输系统，应用于基站，如图6所示，包括：设置模块，设置为设置SRS的配置信息；发送模块，设置为向终端设备发送所述SRS的配置信息；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
其中，上述系统还包括：处理模块，设置为根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
处理模块，是设置为：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI；
当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，确定SRS的频率梳索引偏置值为0；
当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，确定SRS的频率梳索引偏置值为0。
此外，本发明实施例还提供一种SRS的传输系统，应用于终端设备，如图7所示，包括：接收模块，设置为接收基站发送的SRS的配置信息；处理传输模块，设置为根据所述SRS的配置信息处理并传输SRS；其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位 置随机化使能配置信息。
其中，所述处理传输模块，是设置为：根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。具体而言，当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，处理传输模块是设置为根据至少以下信息之一确定SRS的频率梳索引偏置值：
SRS的频率梳数量；
小区标识ID；
基站为终端设备配置的虚拟小区ID；
一个无线帧内的时隙号；
终端设备的无线网络临时标识RNTI。
当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，处理传输模块是设置为确定SRS的频率梳索引偏置值为0。
当基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，处理传输模块是设置为确定SRS的频率梳索引偏置值为0。
此外，本发明实施例还提供一种SRS的处理和发送系统，包括：第一基站以及第二基站，第一基站与第二基站交互协作SRS的频率梳的跳变方式。
其中，所述SRS的频率梳的跳变方式，包括以下至少一种：
SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区ID有关。
此外，上述该些系统的具体处理流程同上述对应方法所述，故于此不再赘述。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。
工业实用性
上述技术方案通过对SRS的频率梳索引进行随机化，降低了小区间SRS干扰，提高了SRS的信道估计准确度，进而达到了提高系统整体性能的效果。

Claims (32)

  1. 一种测量参考信号SRS的传输方法，包括：
    基站设置SRS的配置信息；
    所述基站向终端设备发送所述SRS的配置信息；
    其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
  2. 如权利要求1所述的方法，还包括：
    所述基站设置SRS的配置信息之后，或者，所述基站向终端设备发送所述SRS的配置信息之后，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
  3. 如权利要求2所述的方法，其中，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，所述基站根据至少以下信息之一确定SRS的频率梳索引偏置值：
    SRS的频率梳数量；
    小区标识ID；
    基站为终端设备配置的虚拟小区ID；
    一个无线帧内的时隙号；
    终端设备的无线网络临时标识RNTI。
  4. 如权利要求3所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100001
    其中，NTC为SRS的频率梳数量，c(8ns+i)为伪随机序列中序号为8ns+i对应的数值，ns为一个无线帧内的时隙号，使用
    Figure PCTCN2016084796-appb-100002
    或者
    Figure PCTCN2016084796-appb-100003
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100004
    为小区标识ID，
    Figure PCTCN2016084796-appb-100005
    为向下取整函数。
  5. 如权利要求3所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100006
    其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
    Figure PCTCN2016084796-appb-100007
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100008
    为小区ID，
    Figure PCTCN2016084796-appb-100009
    为向下取整函数，ns为一个无线帧内的时隙号。
  6. 如权利要求3所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100010
    其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
    Figure PCTCN2016084796-appb-100011
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100012
    为小区ID，
    Figure PCTCN2016084796-appb-100013
    为向下取整函数，ns为一个无线帧内的时隙号，nRNTI为终端设备的无线网络临时标识RNTI。
  7. 如权利要求3所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100014
    或者，
    Figure PCTCN2016084796-appb-100015
    其中，NTC为SRS的频率梳数量，
    Figure PCTCN2016084796-appb-100016
    为小区ID，
    Figure PCTCN2016084796-appb-100017
    为基站向终端设备配置的虚拟小区ID。
  8. 如权利要求2所述的方法，其中，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，所述基站确定SRS的频率梳索引偏置值为0。
  9. 如权利要求2所述的方法，其中，所述基站根据高层无线资源控制RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，所述基站确定SRS的频率梳索引偏置值为0。
  10. 一种测量参考信号SRS的传输方法，包括：
    终端设备接收基站发送的SRS的配置信息；
    所述终端设备根据所述SRS的配置信息处理并传输SRS；
    其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或 者，SRS的频率梳位置随机化使能配置信息。
  11. 如权利要求10所述的方法，其中，所述终端设备根据所述SRS的配置信息处理并传输SRS包括：所述终端设备根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
  12. 如权利要求11所述的方法，其中，所述终端设备根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引包括：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，所述终端设备根据至少以下信息之一确定SRS的频率梳索引偏置值：
    SRS的频率梳数量；
    小区标识ID；
    基站为终端设备配置的虚拟小区ID；
    一个无线帧内的时隙号；
    终端设备的无线网络临时标识RNTI。
  13. 如权利要求12所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100018
    其中，NTC为SRS的频率梳数量，c(8ns+i)为伪随机序列中序号为8ns+i对应的数值，ns为一个无线帧内的时隙号，使用
    Figure PCTCN2016084796-appb-100019
    或者
    Figure PCTCN2016084796-appb-100020
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100021
    为小区ID，
    Figure PCTCN2016084796-appb-100022
    为向下取整函数。
  14. 如权利要求12所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100023
    其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
    Figure PCTCN2016084796-appb-100024
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100025
    为小区ID，
    Figure PCTCN2016084796-appb-100026
    为向下取整函数，ns为一个无线帧内的时隙号。
  15. 如权利要求12所述的方法，其中，所述SRS的频率梳索引偏置值 包括：
    Figure PCTCN2016084796-appb-100027
    其中，NTC为SRS的频率梳数量，c(i)为伪随机序列中序号为i对应的数值，使用
    Figure PCTCN2016084796-appb-100028
    作为伪随机序列的初始值，
    Figure PCTCN2016084796-appb-100029
    为小区ID，
    Figure PCTCN2016084796-appb-100030
    为向下取整函数，ns为一个无线帧内的时隙号，nRNTI为终端设备的无线网络临时标识。
  16. 如权利要求12所述的方法，其中，所述SRS的频率梳索引偏置值包括：
    Figure PCTCN2016084796-appb-100031
    或者，
    Figure PCTCN2016084796-appb-100032
    其中，NTC为SRS的频率梳数量，
    Figure PCTCN2016084796-appb-100033
    为小区ID，
    Figure PCTCN2016084796-appb-100034
    为基站向终端设备配置的虚拟小区ID。
  17. 如权利要求11所述的方法其中，所述终端设备根据所述SRS的配置信息处理并传输SRS包括：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，所述终端设备确定SRS的频率梳索引偏置值为0。
  18. 如权利要求11所述的方法，还包括：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，所述终端设备确定SRS的频率梳索引偏置值为0。
  19. 一种测量参考信号SRS的处理和发送方法，包括：
    第一基站与第二基站交互协作SRS的频率梳的跳变方式。
  20. 如权利要求19所述的方法，其中，所述SRS的频率梳的跳变方式，包括以下至少一种：
    SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区标识ID有关。
  21. 一种测量参考信号SRS的传输系统，应用于基站，包括：
    设置模块，设置为设置SRS的配置信息；
    发送模块，设置为向终端设备发送所述SRS的配置信息；
    其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或 者，SRS的频率梳位置随机化使能配置信息。
  22. 如权利要求21所述的系统，还包括：处理模块，设置为根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
  23. 如权利要求22所述的系统，其中，所述处理模块，是设置为：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，根据至少以下信息之一确定SRS的频率梳索引偏置值：
    SRS的频率梳数量；
    小区标识ID；
    基站为终端设备配置的虚拟小区ID；
    一个无线帧内的时隙号；
    终端设备的无线网络临时标识RNTI。
  24. 如权利要求22所述的系统，其中，所述处理模块，是设置为：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，确定SRS的频率梳索引偏置值为0。
  25. 如权利要求22所述的系统，其中，所述处理模块，是设置为：当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，确定SRS的频率梳索引偏置值为0。
  26. 一种测量参考信号SRS的传输系统，应用于终端设备，包括：
    接收模块，设置为接收基站发送的SRS的配置信息；
    处理传输模块，设置为根据所述SRS的配置信息处理并传输SRS；
    其中，所述SRS的配置信息包括：SRS的频率梳跳转使能配置信息，或者，SRS的频率梳位置随机化使能配置信息。
  27. 如权利要求26所述的系统，其中，所述处理传输模块，是设置为：根据高层RRC信令配置的频率梳索引和SRS的频率梳索引偏置值确定新的SRS的频率梳索引。
  28. 如权利要求27所述的系统，其中，所述处理传输模块，是设置为：当所述SRS的频率梳跳转使能配置信息为使能，或者，所述SRS的频率梳位置随机化使能配置信息为使能时，根据至少以下信息之一确定SRS的频率梳索引偏置值：
    SRS的频率梳数量；
    小区标识ID；
    基站为终端设备配置的虚拟小区ID；
    一个无线帧内的时隙号；
    终端设备的无线网络临时标识RNTI。
  29. 如权利要求27所述的系统，其中，所述处理传输模块，是设置为：当所述SRS的频率梳跳转使能配置信息为不使能，或者，所述SRS的频率梳位置随机化使能配置信息为不使能时，确定SRS的频率梳索引偏置值为0。
  30. 如权利要求27所述的系统，其中，所述处理传输模块，还设置为当所述基站未配置SRS的频率梳跳转参数或SRS的频率梳位置随机化参数时，确定SRS的频率梳索引偏置值为0。
  31. 一种测量参考信号SRS的处理和发送系统，包括：第一基站以及第二基站，第一基站与第二基站交互协作SRS的频率梳的跳变方式。
  32. 如权利要求31所述的系统，其中，所述SRS的频率梳的跳变方式，包括以下至少一种：
    SRS的频率梳索引依次从最小值到最大值跳变、SRS的频率梳索引依次从最大值到最小值跳变、SRS的频率梳索引依次从最小值到最大值再到最小值循环跳变、SRS的频率梳索引依次从最大值到最小值再到最大值循环跳变、SRS的频率梳索引与小区ID有关。
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