WO2013063961A1

WO2013063961A1 - Method and device for configuring sounding reference signal

Info

Publication number: WO2013063961A1
Application number: PCT/CN2012/079050
Authority: WO
Inventors: 弓宇宏; 孙云锋; 郭森宝
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-10-31
Filing date: 2012-07-23
Publication date: 2013-05-10
Also published as: CN103095442A

Abstract

Disclosed are a method and device for configuring sounding reference signals. The method for configuring sounding reference signals includes: the network side determines that the receiving side is used for sending configuration information about a sounding reference signal (SRS) and notifying the receiving side. The receiving side configures the SRS according to the received configuration information about the SRS and sends a configured SRS signal to the network side. In the present invention, by way of adding the number of symbols and location used for sending an SRS, and at least one of an OCC enable flag, the OCC length of the SRS, the OCC of the SRS and the OCC mapping method of the SRS in each subframe in the SRS configuration information, the time/frequency/code resources used for sending the SRS are increased, which effectively solves the problem that the capacity of the SRS in CoMP scenario 4 is insufficient.

Description

Detection reference signal configuration method and device

The present invention relates to a technique for configuring a Sounding Reference Signal (SRS), and more particularly to a method and apparatus for configuring a sounding reference signal. Background technique

The uplink and downlink of the Long Term Evolution-Advanced (LTE-A) system is a frequency division system based on Orthogonal Frequency Division Multiplexing (OFDM). In the wireless communication system based on Code Division Multiple Access (CDMA), the LTE-A system has no processing gain, and there is almost no interference problem in the cell because of the complete frequency division orthogonality. Interference processing at the edge of the cell is relatively tricky. The Coordinated Multiple Point (CoMP) transmission technology utilizes the coordinated transmission of the transmit antennas of multiple cells to achieve high quality and reliable transmission of the wireless link at the cell edge, which can effectively solve the problem of cell edge interference.

The 3GPP, 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) has made CoMP technology an important technology for LTE-A. And in 3GPP RANI #63b, the research scenarios of CoMP are divided into four types: scenario 1 is a homogeneous-site intra-site CoMP scenario; scenario 2 is a homogeneous network inter-site CoMP scenario; scenario 3 is a heterogeneous network macro +RRH CoMP scenario, and the macro and radio radio (RRH) have different cell IDs (Cell IDs); Scenario 4 is a heterogeneous network macro+RRH CoMP scenario, and the macro and RRH have the same Cell. ID.

In 3GPP TS 36.814, the feedback techniques of the CoMP system are classified into three categories. The channel information obtained by channel reciprocity using the Sounding Reference Signal (SRS) is a time division duplex (TDD) CoMP system. One of the important Feedback technology. In addition, SRS is also an important channel detection technology in uplink CoMP systems. In view of the lack of SRS capacity due to multiple antennas, the A10-ARS (Aperiodic-Sounding Reference Signal) is introduced in R10, but A-SRS only improves the resource utilization of SRS, essentially No increase in SRS capacity.

In the CoMP scenario 4, a plurality of micro cells (ie, cells under the RRH) are set in the macro cell, and the hotspot coverage and the blind spot coverage capability of the macro cell are increased, so that the macro cell can be compared with the traditional homogeneous network cell. Support more users to communicate. However, since the macro cell and all the RRHs in the coverage area have the same Cell ID, that is, they still use only one SRS base sequence group as in the conventional homogeneous network cell, which causes the SRS capacity shortage problem in this scenario. Summary of the invention

In view of the above, the main object of the present invention is to provide a method and a device for configuring a sounding reference signal, which can implement OCC configuration of the SRS on the receiving side through high layer signaling or physical layer signaling, and solve the problem of insufficient SRS capacity.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A method for configuring a sounding reference signal, comprising:

The network side determines the configuration information used by the receiving side to send the SRS, and notifies the receiving side. The configuration information includes at least one of SRS configuration information, SRS mapping mode, and orthogonal mask configuration information of the SRS of the version 10 R10.

Preferably, the orthogonal mask configuration information of the SRS includes at least one of the following information:

The orthogonal mask of the SRS, the OCC enable identifier, the OCC length of the SRS, the OCC of the SRS, and the OCC mapping mode of the SRS.

Preferably, the network side determines the mapping manner of the SRS as follows:

Determining, by the network side, the number of symbols and the symbol position used by the receiving side to transmit the SRS in each subframe;

The network side determines the OCC mapping manner of the SRS as follows: According to the symbol number and symbol of the SRS The location determines the OCC mapping location of the SRS.

Preferably, the network side determines that the number of symbols and symbol positions used by the UE to transmit the SRS in each subframe is:

The network side determines that the number of symbols used by the receiving side to transmit the SRS in each subframe is one, and the symbol position is the first symbol of the first slot in the subframe, or the first time in the subframe. The seventh symbol on the slot, or the first symbol of the second slot in each subframe, or the second to last symbol of the second slot in each subframe;

Or, the network side determines that the number of symbols used by the receiving side to transmit the SRS in each subframe is two, and the symbol position is the first symbol and the second slot of the first slot in each subframe. The 7th symbol, or the 7th symbol of the 1st time slot and the 7th symbol of the 2nd time slot in each subframe, or the 7th symbol and the 1st time slot of the 1st time slot in each subframe The 7th symbol of 2 slots, or the 1st symbol and the 7th symbol of the 2nd slot in each subframe.

Preferably, the network side determines the OCC mapping mode of the SRS as a time domain mapping or a frequency domain mapping. The OCC mapping location of the SRS is determined according to the number of symbols and the symbol position of the SRS: when the OSC mapping mode of the SRS is a time domain mapping, the OCC Mapping between 2 SRSs of each subframe or 2 SRSs or 4 SRSs of 2 subframes bundled in the time domain;

When the OCC mapping mode of the SRS is frequency domain mapping, the OCC is mapped to two adjacent available subcarriers or four adjacent available subcarriers carrying SRS in each subframe.

Preferably, the network side determines that the OCC length is 2, the OCC is [+1, +1] or [+1, -1]; or, the network side determines that the OCC length is 4, and the OCC is [+1, +1, +1 , +1] or [+1, -1, +1, -1] or [+1, +1, -1, -1] or [+1, -1, -1, +1].

Preferably, the network side notifies the receiving side of the configuration information by using high layer signaling or physical layer signaling.

Preferably, the method further includes:

The receiving side configures the SRS according to the configuration information according to the configuration information of the received SRS. And sending the configured SRS signal to the network side.

A sounding reference signal configuration device, comprising: a determining unit and a notification unit, wherein: a determining unit, configured to determine configuration information used by the receiving side to send an SRS; wherein the configuration information includes version 10 R10 SRS configuration information, SRS mapping At least one of a mode and an orthogonal mask configuration information of the SRS;

a notification unit, configured to notify the receiving side of the configuration information.

The OCC enable identifier of the SRS, the OCC length of the SRS, the OCC of the SRS, and the OCC mapping mode of the SRS.

Preferably, the determining unit is further configured to: determine a number of symbols and a symbol position used by the receiving side to transmit the SRS in each subframe; and determine an OCC mapping position of the SRS according to the symbol number and the symbol position of the SRS.

Preferably, the determining unit is further configured to: determine that the number of symbols used by the receiving side to transmit the SRS in each subframe is one, where the symbol position is the first symbol of the first time slot in the subframe, or The seventh symbol on the first time slot in the subframe, or the first symbol of the second time slot in each subframe, or the _second last symbol of the _second time slot in each subframe; or Determining that the number of symbols used by the receiving side to transmit the SRS in each subframe is two, and the symbol position is the first symbol of the first slot and the seventh symbol of the second slot in each subframe, Or the 7th symbol of the 1st time slot and the 7th symbol of the 2nd time slot in each subframe, or the 7th symbol of the 1st time slot and the 2nd time slot of the 1st time slot in each subframe 7 symbols, or the 1st symbol and the 7th symbol of the 2nd time slot in each subframe.

Preferably, the determining unit is further configured to: determine an OCC mapping manner of the SRS as a time domain mapping or a frequency domain mapping;

And, when the OSC mapping mode of the SRS is time domain mapping, the OCC is mapped between 2 SRSs of each subframe or 2 SRSs or 4 SRSs of 2 subframes bundled in the time domain; When the OCC mapping mode is frequency domain mapping, the OCC is mapped to two adjacent available subcarriers or four adjacent available subcarriers carrying SRS in each subframe.

Preferably, the determining unit is further configured to: determine that the OCC length is 2, and the OCC is [+1, +1] or [+1, -1];

Or, determine that the OCC length is 4, and the OCC is [+1, +1, +1, +1] or [+1, -1, +1.

-1] or [+1, +1, -1, -1] or [+1, -1, -1, +1].

Preferably, the device further includes a receiving unit, a configuration unit, and a sending unit, where: a receiving unit, configured to receive SRS configuration information;

a configuration unit, configured to configure an SRS according to the configuration information;

The sending unit is configured to send the configured SRS signal.

In the present invention, the network side determines at least one of a mapping manner of the SRS included in the SRS, and an OCC enable identifier of the SRS, an OCC length of the SRS, an OCC of the SRS, and an OCC mapping manner of the SRS, and The determined configuration information notifies the receiving side, and the receiving side configures the SRS according to the received configuration information and transmits it. By adding at least one of the number and position of symbols for SRS transmission in each subframe in the SRS configuration information, and at least one of an OCC enable identifier, an OCC length of the SRS, an OCC of the SRS, and an OCC mapping manner of the SRS, the addition can be used for The time/frequency/code resource transmitted by the SRS effectively solves the problem of insufficient SRS capacity in the CoMP scenario 4. DRAWINGS

1 is a schematic diagram of SRS multiplexing between users corresponding to Embodiment 1 of the present invention;

2 is a schematic diagram of SRS multiplexing between users corresponding to Embodiment 2 of the present invention;

3 is a schematic diagram of SRS multiplexing between users corresponding to Embodiment 3 of the present invention;

4 is a schematic diagram of SRS multiplexing between users corresponding to Embodiment 4 of the present invention;

FIG. 5 is a schematic diagram of SRS multiplexing between users corresponding to Embodiment 5 of the present invention; FIG.

FIG. 6 is a schematic structural diagram of a structure of a sounding reference signal configuration apparatus according to an embodiment of the present invention. detailed description

The basic idea of the present invention is: The network side determines at least one of a mapping manner of the SRS included in the configuration information for transmitting the SRS on the receiving side, an OCC enable identifier of the SRS, an OCC length of the SRS, an OCC of the SRS, and an OCC mapping manner of the SRS. And notifying the receiving side of the determined configuration information, and the receiving side configures the SRS according to the received configuration information and transmits the information.

The present invention will be further described in detail below with reference to the accompanying drawings.

In the present invention, the configuration information used by the receiving side to transmit the SRS is determined by the network side, and the receiving side is notified by the high layer signaling or the physical layer signaling of the number of symbols and the symbol position that can be used for transmitting the SRS in the subframe.

Specifically, the network side notifies the receiving side of the number of symbols that can be used by the receiving side to transmit the SRS in each subframe by one bit, for example, 0 indicates that the number of symbols available for receiving SRS in each subframe is one. 1 indicates that the number of symbols available for the receiving side to transmit the SRS in each subframe is two. Wherein, the subframe refers to a user-specific subframe.

The network side notifies the receiving side of the symbol position available for the receiving side to transmit the SRS in each subframe by 2 bits. For example, 00 indicates that the position is the first symbol on the first slot in each subframe (when the number of symbols available for receiving SRS in each subframe is one) or the number of symbols in each subframe The first symbol in one slot and the seventh symbol in the second slot (when the number of symbols available for receiving SRS in each subframe is two), 01 indicates that the position is The 7th symbol on the 1st slot of each subframe (when the number of symbols available for receiving SRS in each subframe is 1) or the 7th symbol and the number on the 1st slot The 7th symbol on 2 slots (when each of the subframes is available for the receiving side to transmit the SRS symbol number 2), 10 indicates that the position is the 1st in the 2nd slot in each subframe Symbol (when the number of symbols available for receiving side transmitting SRS in each subframe is one) is the first symbol and the seventh symbol on the second slot in each subframe (when available in each subframe) The number of symbols for transmitting SRS on the receiving side is 2 11) indicates that the position is the second-to-last symbol of the second slot in each subframe (when the number of symbols available for receiving SRS in each subframe is one) or the second The last 2 symbols of the slot (when the number of symbols available for receiving SRS in the receiving side is 2 in each subframe).

The network side notifies the receiving side whether the length of the OCC is 2 or 4 by 1 bit. For example, 0 indicates that the OCC length is 2, and 1 indicates that the OCC length is 4.

The network side notifies the receiving side OCC of [+1, +1] or [+1, -1] or [+1, +1, +1, +1] or [+1, -1, +1 by 2 bits. -1] or [+1, +1, -1, -1] or [+1, -1, -1, +1], for example 00 means OCC is [+1, +1] (when OCC is 2 in length) Time) or [+1, +1, +1, +1] (when the OCC length is 4), 01 indicates that the OCC is [+1, -1] (when the OCC length is 2) or [+1,- 1, +1, -1] (when the OCC length is 4), 10 means OCC is [+1, +1, -1, -1], and 11 means OCC is [+1, -1, -1, + 1]. (right 7)

The network side notifies whether the OCC mapping mode is a time domain mapping or a frequency domain mapping, for example, 0 indicates that the OCC mapping mode is a time domain mapping, and 1 indicates that the OCC mapping mode is a frequency domain mapping.

When the OCC mapping mode is time domain mapping, the OCC sequentially maps 2 SRS symbols between 2 SRS symbols in each subframe or every 2 subframes bundled in the time domain (when the OCC length is 2) or 4 SRSs. The symbol (when the OCC length is 4). The same SRS sequence symbol is mapped on every 2 or 4 SRS symbols used for time domain OCC mapping corresponding to the same subcarrier. Application time domain OCC's 2 SRS symbols or 4 SRS symbols can only be used for the same user.

When the OCC mapping mode is frequency domain mapping, the OCC sequentially maps every 2 adjacent available subcarriers (when the OCC length is 2) or every 4 neighbors available on the symbol of the transmit SRS available for the receiving side of each subframe. The subcarriers (when the OCC length is 4), wherein each of the 2 or 4 adjacent available subcarriers on the SRS symbol for the frequency domain OCC mapping maps the same SRS sequence symbol.

The essence of the technical solution of the present invention will be further clarified by specific examples below. The specific implementations described above may be applied to any of the embodiments, and the same content is not described in detail in the embodiments. Example 1

The network side notifies the user 1 of its cell-specific/ue-specific subframe and spectrum comb information in the RIO existing manner, and notifies the user through high layer signaling or physical layer signaling. The number of SRSs and locations that can be used in ue-specific subframes are as follows:

The number of symbols available to user 1 in each subframe for transmitting SRS itself is 1 and is located on the 7th symbol of the 2nd slot of each subframe.

The network side configures the same cell-specific and ue-specific subframes and spectrum combs for the user 2, and notifies the user 2 that it can be used in the ue-specific subframe through high layer signaling or physical layer signaling. The number of SRSs and their locations are as follows:

The number of symbols available to user 2 in each subframe for transmitting SRS itself is 1, the first symbol in the first slot of each subframe or the seventh symbol in the first slot or the second symbol in the second slot. On the second symbol of the last or the second time slot.

After receiving the configuration information on the network side, the user 1 transmits the SRS to the network side on the seventh symbol of the second time slot of the subframe.

After the user 2 receives the configuration information on the network side, the first symbol or the seventh symbol of the first slot of the subframe or the reciprocal of the first symbol or the second slot of the second slot The SRS is sent to the network side on the second symbol.

1 is a schematic diagram of SRS multiplexing between users according to Embodiment 1 of the present invention. In the figure, a slashed square indicates a resource unit carrying an SRS sequence. As shown in FIG. 1, user 1 and user 2 are time-multiplexed. SRS orthogonal multiplexing is implemented by means of (TDM, Time Division Multiplex).

Example 2

The network side notifies the user 1 of its cell-specific and ue-specific subframes in the R10 existing manner, and notifies the user of the OCC enable identifier/OCC length/OCC/OCC mapping manner through high layer signaling or physical layer signaling. Information, the specific implementation is as follows: User 1 sends the SRS on the last symbol on the ue-specific subframe. The OCC of user 1 is enabled, the OCC length is 2, the OCC is [+1, +1], and the OCC mapping mode is frequency domain mapping.

User 2 sends the SRS on the last symbol on the ue-specific subframe. The OCC of the user 2 is enabled, the OCC length is 2, the OCC is [+1, -1], and the OCC mapping mode is frequency domain mapping.

User 1 and user 2 have the same ue-specific subframe configuration, and the spectrum is the same.

After receiving the configuration information, the user 1 assigns the allocated OCC ([+1, +1]) in the frequency domain according to the order from low frequency to high frequency, on the allocated spectrum comb with every two adjacent sub-children. The carrier mapping is mapped once, that is, the SRS sequence is mapped in the frequency domain from low frequency to high frequency, and one SRS sequence symbol is mapped every two subcarriers on the allocated spectrum comb.

After receiving the configuration information, the user 2 allocates the allocated OCC ([+1, -1]) in the frequency domain according to the order from low frequency to high frequency, on each of the allocated spectrum bridges. The subcarrier mapping is performed once, that is, the SRS sequence is mapped in the frequency domain from the low frequency to the high frequency, and one SRS sequence symbol is mapped every two subcarriers on the allocated spectrum comb.

2 is a schematic diagram of SRS multiplexing between users according to Embodiment 2 of the present invention. In the figure, a slashed square indicates a resource unit carrying an SRS sequence. As shown in FIG. 2, a code is divided between User 1 and User 2. SRS orthogonal multiplexing is implemented by means of multiplexing (CDM, Code Division Multiplex).

Example 3

The network side notifies the receiving side of its cell-specific and ue-specific subframes in the R10 existing manner, and notifies the user of the number of SRSs that can be used in the ue-specific subframe through high layer signaling or physical layer signaling. And the location, and the network side notifies the user of the OCC enable identifier/OCC length/OCC/OCC mapping mode information by using the high layer or physical layer signaling, and the specific implementation manner is as follows: User 1 can be used for sending itself in each subframe. The number of symbols of the SRS is 2, which is located at the 7th symbol of the 1st slot of each subframe and the 7th symbol of the 2nd slot; User 1's OCC is enabled, the OCC length is 2, and the OCC is [ +1, +1], OCC mapping mode is time domain mapping.

The number of symbols that User 2 can use to transmit SRS itself in each subframe is 2, located at each The 7th symbol of the 1st slot of the subframe and the 7th symbol of the 2nd slot; The OCC of User 2 is enabled, the OCC length is 2, the OCC is [+1, -1], OCC mapping The mode is time domain mapping.

The user 1 and user 2 have the same ue-specific subframe configuration, and the spectrum comb configuration is the same. After receiving the configuration information, the user 1 maps the allocated OCC ([+1, +1]) to two SRS symbols of the same subcarrier in each subframe; the SRS sequence is in the frequency domain from low frequency to high. In the order of the frequencies, one SRS sequence symbol is mapped to each subcarrier on the assigned spectrum comb.

After receiving the configuration information, the user 2 maps the allocated OCC ([+1, -1]) to two SRS symbols of the same subcarrier in each subframe; the SRS sequence is in the frequency domain from low frequency to high. In the order of the frequencies, one SRS sequence symbol is mapped to each subcarrier on the assigned spectrum comb.

3 is a schematic diagram of SRS multiplexing between users according to Embodiment 3 of the present invention. In the figure, a slashed square indicates a resource unit carrying an SRS sequence. As shown in FIG. 3, a CDM between User 1 and User 2 is used. The method implements SRS orthogonal multiplexing.

Example 4

The network side notifies the receiving side of its cell-specific and ue-specific subframes in the R10 existing manner, and notifies the user of the number of SRSs that can be used in the ue-specific subframe by higher layer signaling or physical layer signaling. And the location, and the network side notifies the user of the OCC enable identifier/OCC length/OCC/OCC mapping mode information through high-level or physical layer signaling. The specific implementation manner is as follows:

The number of symbols available to user 1 in each subframe for transmitting SRS itself is 2, located at the 7th symbol of the 1st slot of each subframe and the 7th symbol of the 2nd slot; User 1 The OCC is enabled, the OCC length is 2, the OCC is [+1, +1], and the OCC mapping mode is frequency domain mapping.

The number of symbols available to user 2 in each subframe for transmitting SRS itself is 2, located at the 7th symbol of the 1st slot of each subframe and the 7th symbol of the 2nd slot; User 2 The OCC is enabled, the OCC length is 2, the OCC is [+1, -1], and the OCC mapping mode is frequency domain mapping.

The user 1 and user 2 have the same ue-specific subframe configuration, and the spectrum comb configuration is the same. After receiving the configuration information, the user 1 assigns the allocated OCC ([+1, +1]) in the frequency domain according to the order from low frequency to high frequency, on the allocated spectrum comb with every two adjacent sub-children. The carrier mapping is mapped once, that is, the SRS sequence is mapped in the frequency domain from low frequency to high frequency, and one SRS sequence symbol is mapped every two subcarriers on the allocated spectrum comb.

After receiving the configuration information, the user 2 assigns the assigned OCC ([+1, -1]) in the frequency domain according to the order from low frequency to high frequency, on the allocated spectrum comb, every two adjacent The subcarrier mapping is performed once, that is, the SRS sequence is mapped in the frequency domain from the low frequency to the high frequency, and one SRS sequence symbol is mapped every two subcarriers on the allocated spectrum comb.

4 is a schematic diagram of SRS multiplexing between users according to Embodiment 4 of the present invention. In the figure, a slashed square indicates a resource unit carrying an SRS sequence. As shown in FIG. 4, a CDM is used between User 1 and User 2. The way to achieve SRS orthogonal multiplexing.

Example 5

After receiving the configuration information, the user 1 assigns the assigned OCC ([+1, +1]) to the frequency. The fields are mapped in the order of the low frequency to the high frequency, and are mapped once every two adjacent subcarriers on the allocated spectrum comb, that is, the SRS sequence is in the frequency domain in the order from low frequency to high frequency. One SRS sequence symbol is mapped for every two subcarriers on the assigned spectrum comb.

After receiving the configuration information, the user 2 allocates the allocated OCC ([+l, -1]) in the frequency domain of the first SRS of each subframe in order from low frequency to high frequency. The spectrum is only dangerously mapped in such a way that every two adjacent subcarriers are mapped once; in the frequency domain of the second SRS of each subframe, the assigned OCC is inverted in order from low frequency to high frequency. Later ([-1, +1]) maps every two adjacent subcarriers on the allocated spectrum comb, ie, the SRS sequence is in the frequency domain from low frequency to high frequency. One SRS sequence symbol is mapped for every two subcarriers on the allocated spectrum comb.

5 is a schematic diagram of SRS multiplexing between users according to Embodiment 5 of the present invention. In the figure, a slashed square indicates a resource unit carrying an SRS sequence. As shown in FIG. 5, a CDM between User 1 and User 2 is used. The method implements SRS orthogonal multiplexing.

Example 6

The number of symbols that the user 1 can use to transmit the SRS in each subframe is 1 and is located on the first symbol of the first slot of each subframe. The OCC of the user 1 is enabled, the OCC length is 2, and the OCC is [+1, +1], OCC mapping mode is frequency domain mapping.

The number of symbols that the user 2 can use to transmit the SRS in each subframe is 1 and is located on the 7th symbol of the 2nd slot of each subframe. The OCC of the user 2 is enabled, the OCC length is 2, and the OCC is [+1, +1], OCC mapping mode is frequency domain mapping. The number of symbols that the user 3 can use to transmit the SRS in each subframe is 1 and is located on the first symbol of the first slot of each subframe. The OCC of the user 3 is enabled, the OCC length is 2, and the OCC is [+1, -1] , OCC mapping mode is frequency domain mapping.

The number of symbols that the user 4 can use to transmit the SRS in each subframe is 1 and is located on the 7th symbol of the 2nd slot of each subframe. The OCC of the user 4 is enabled, the OCC length is 2, and the OCC is [+1, +1], OCC mapping mode is frequency domain mapping.

User 1, User 2, User 3 and User 4 have the same ue-specific subframe configuration. User 1 and User 3 have the same spectrum configuration, and User 2 and User 4 have the same spectrum configuration.

After receiving the configuration information, the user 1 assigns the assigned OCC ([+1, +1]) to the first symbol of the first slot of the subframe on the allocated spectrum comb according to the low frequency. In the order of high frequency, the mapping is performed once every two adjacent subcarriers, that is, the SRS sequence is mapped in the frequency domain from low frequency to high frequency, and every two subcarriers are mapped on the allocated spectrum comb. An SRS sequence symbol.

After receiving the configuration information, the user 2 assigns the assigned OCC ([+1, +1]) to the 7th symbol of the 2nd time slot of the subframe on the allocated spectrum comb according to the low frequency. In the order of high frequency, the mapping is performed once every two adjacent subcarriers, that is, the SRS sequence is mapped in the frequency domain from low frequency to high frequency, and every two subcarriers are mapped on the allocated spectrum comb. An SRS sequence symbol.

After receiving the configuration information, the user 3 assigns the assigned OCC ([+1, -1]) to the first symbol of the first slot of the subframe on the allocated spectrum comb according to the low frequency. In the order of high frequency, the mapping is performed once every two adjacent subcarriers, that is, the SRS sequence is mapped in the frequency domain from low frequency to high frequency, and every two subcarriers are mapped on the allocated spectrum comb. An SRS sequence symbol.

After receiving the configuration information, the user 4 assigns the assigned OCC ([+1, +1]) to the allocated spectrum comb on the 7th symbol of the second slot of the subframe according to the low frequency. To high frequency The order is mapped in such a manner that every two adjacent subcarriers are mapped once, that is, the SRS sequence is mapped in the frequency domain according to the order from low frequency to high frequency, and one SRS sequence symbol is mapped every two subcarriers on the allocated spectrum comb. .

SRS orthogonal multiplexing is implemented in TDM between users 1 or 3 and users 2 or 4, and SRS orthogonal multiplexing is implemented in CDM between users 1 and 3 or users 2 and 4.

FIG. 6 is a schematic structural diagram of a configuration apparatus for detecting a reference signal according to an embodiment of the present invention. As shown in FIG. 6, the sounding reference signal configuration apparatus of the embodiment of the present invention includes a determining unit 60 and a notification unit 61, where:

a determining unit 60, configured to determine configuration information used by the receiving side to send the SRS;

The notification unit 61 is configured to notify the receiving side of the configuration information.

The foregoing configuration information includes a mapping manner of the SRS and at least one of the following information:

The determining unit 60 is further configured to: determine a number of symbols and a symbol position used by the receiving side to transmit the SRS in each subframe; and determine an OCC mapping position of the SRS according to the symbol number and the symbol position of the SRS.

The determining unit 60 is further configured to determine that the number of symbols used by the receiving side to transmit the SRS in each subframe is one, and the symbol position is the first symbol of the first slot in the subframe, or in the subframe. The seventh symbol on the first time slot, or the first symbol of the second time slot in each subframe, or the second last symbol of the second time slot in each subframe;

Or determining that the number of symbols used by the receiving side to transmit the SRS in each subframe is two, and the symbol position is the first symbol of the first slot and the seventh slot of the second slot in each subframe. Symbol, or the 7th symbol of the 1st slot in each subframe and the 7th symbol of the 2nd slot, or the 7th symbol and the 2nd slot of the 1st slot in each subframe The 7th symbol, or the 1st symbol and the 7th symbol of the 2nd time slot in each subframe. The determining unit 60 is further configured to: determine that the OCC mapping mode of the SRS is a time domain mapping or a frequency domain mapping;

And, when the OSC mapping mode of the SRS is time domain mapping, the OCC is mapped to 2 SRSs or 2 SRSs of 2 subframes bundled in the time domain for each subframe; the OCC mapping mode of the SRS is In frequency domain mapping, the OCC is mapped to 2 adjacent available subcarriers or 4 adjacent available subcarriers carrying SRS in each subframe.

The determining unit 60 is further configured to determine that the OCC length is 2, and the OCC is [+1, +1] or [+1.

-1];

Or, determine that the OCC length is 4, OCC is [+1, +1, +1, +1] or [+1, -1, +1, -1] or [+1, +1, -1, -1 ] or [+1, -1, -1, +1].

On the basis of the sounding reference signal configuration device shown in FIG. 6, the sounding reference signal configuration device of the embodiment of the present invention further includes a receiving unit (not shown in FIG. 6), a configuration unit (not shown in FIG. 6), and a transmitting unit ( Not shown in Figure 6; where:

a receiving unit, configured to receive SRS configuration information;

The sending unit is configured to send the configured SRS signal.

It should be understood by those skilled in the art that the functions of the foregoing processing unit in the sounding reference signal configuration apparatus shown in FIG. 6 of the present invention can be implemented by a corresponding hardware circuit, or a processor and a corresponding execution software, for example, the above notification. The unit, the transmitting unit and the receiving unit can be implemented by an antenna processing system. The related functions of the foregoing processing units can be understood by referring to the related description of the embodiments of the foregoing sounding reference signal configuration method.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A method for configuring a sounding reference signal, the method comprising:

The network side determines the configuration information of the receiving side for transmitting the sounding reference signal SRS, and notifies the receiving side; wherein the configuration information includes the SRS configuration information of the version 10 R10, the SRS mapping manner, and the orthogonal mask configuration information of the SRS. at least one.

The method according to claim 1, wherein the orthogonal mask configuration information of the SRS includes at least one of the following information:

The method according to claim 2, wherein the network side determines the mapping manner of the SRS as: the network side determines the number of symbols and the symbol position used by the receiving side to transmit the SRS in each subframe;

The network side determines the OCC mapping manner of the SRS as follows: The OCC mapping position of the SRS is determined according to the number of symbols and the symbol position of the SRS.

4. The method according to claim 3, wherein the network side determines that the number of symbols and symbol positions used by the UE to transmit the SRS in each subframe is:

5. The method according to claim 4, wherein the network side determines an OCC mapping manner of the SRS as a time domain mapping or a frequency domain mapping;

Determining the OCC mapping position of the SRS according to the number of symbols and the symbol position of the SRS: When the OCC mapping mode of the SRS is the time domain mapping, the OCC is mapped to the two SRSs of each subframe or every two subframes that are bundled in the time domain. 2 SRS or 4 SRS;

6. The method according to claim 2, wherein the network side determines that the OCC length is 2, and the OCC is [+1, +1] or [+1, -1];

Or, the network side determines that the OCC length is 4, and the OCC is [+1, +1, +1, +1] or [+1, -1, +1, -1] or [+1, +1, -1, -1] or [+1, -1, -1, +1].

The method according to any one of claims 1 to 6, wherein the network side notifies the receiving side of the configuration information by high layer signaling or physical layer signaling.

8. The method according to claim 7, wherein the method further comprises:

The receiving side configures the SRS according to the configuration information according to the received configuration information of the SRS, and sends the configured SRS signal to the network side.

9. A sounding reference signal configuration device, the device comprising a determining unit and a notification unit, wherein:

a determining unit, configured to determine configuration information used by the receiving side to send the SRS, where the configuration information includes at least one of SRS configuration information, SRS mapping mode, and orthogonal mask configuration information of the SRS of the version 10 R10;

10. The apparatus according to claim 9, wherein the orthogonal mask configuration information of the SRS comprises at least one of the following information:

OCS enable identification of SRS, OCC length of SRS, OCC of SRS, and OCC of SRS Mapping method.

The apparatus according to claim 10, wherein the determining unit is further configured to: determine a number of symbols and a symbol position used by the receiving side to transmit the SRS in each subframe; and, according to the number of symbols of the SRS, The symbol position determines the OCC mapping position of the SRS.

The device according to claim 11, wherein the determining unit is further configured to: determine that the number of symbols used by the receiving side to transmit the SRS in each subframe is one, and the symbol position is the first one in the subframe. The first symbol of the time slot, or the seventh symbol on the first time slot in the subframe, or the first symbol of the second time slot in each subframe, or the second time in each subframe The second sign of the last of the gap;

Or determining that the number of symbols used by the receiving side to transmit the SRS in each subframe is two, and the symbol position is the first symbol of the first slot and the seventh slot of the second slot in each subframe. Symbol, or the 7th symbol of the 1st slot in each subframe and the 7th symbol of the 2nd slot, or the 7th symbol and the 2nd slot of the 1st slot in each subframe The 7th symbol, or the 1st symbol and the 7th symbol of the 2nd time slot in each subframe.

The apparatus according to claim 12, wherein the determining unit is further configured to: determine an OCC mapping manner of the SRS as a time domain mapping or a frequency domain mapping;

The device according to claim 10, wherein the determining unit is further configured to: determine that the OCC length is 2, and the OCC is [+1, +1] or [+1, -1];

15. Apparatus according to any one of claims 9 to 14, the apparatus further comprising a receipt a configuration unit and a sending unit; wherein: a receiving unit, configured to receive SRS configuration information, a configuration unit, configured to configure an SRS according to the configuration information, and a sending unit, configured to send the configured SRS signal.