CN104767586A - A method for controlling transmission of reference signal used for detection and base station apparatus - Google Patents
A method for controlling transmission of reference signal used for detection and base station apparatus Download PDFInfo
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- CN104767586A CN104767586A CN201410001375.XA CN201410001375A CN104767586A CN 104767586 A CN104767586 A CN 104767586A CN 201410001375 A CN201410001375 A CN 201410001375A CN 104767586 A CN104767586 A CN 104767586A
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Abstract
An embodiment of the present invention provides a method for controlling transmission of SRS, and a base station apparatus, used for reducing an uplink wireless resource occupied by the SRS, and increasing uplink transaction capacity; the method includes: determining, by the base station, channel state information of a terminal; determining, by the base station, beaming forming manna used when transmitting data to the terminal according to the channel state information; and when the determined beam forming manner is codebook based beam forming, sending an indicating message to the terminal to indicate the terminal to add a sending period of the SRS, or to indicate the terminal to send the SRS only when receiving a signaling of the base station.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of method and the base station equipment that control the transmission of detection reference signal.
Background technology
At third generation collaborative project (3rd Generation Partnership Project, in the agreement of R8/R9 version 3GPP), introduce and adopt based on uplink detection reference signal (Souding Reference Signal, SRS) transmission mode (the Transmission Mode of the multi-antenna beam shaping method of the figuration factor is calculated, TM) 7 and TM8, in the agreement of R10 version, introduce TM9, TM9 supports the wave beam forming based on code book.
SRS can transmit in generic uplink subframe, also can at uplink pilot time slot (Uplink PilotTime Slot, UpPTS) upper transmission, be positioned at last single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access of sub-frame of uplink, SC-FDMA) symbol, on certain running time-frequency resource, the length of SRS and terminal transmission SRS is sent by evolution base station (evolved Node B, eNB) configurating terminal.At time division duplex (Time Division Duplex, TDD) in system, SRS is for estimating up channel matrix H, the factor of compute beam figuration, and select modulation coding mode (Modulation and CodingScheme, MCS) and carry out upstream frequency selectivity scheduling etc.
SRS passes through wireless heterogeneous networks (Radio Resource Control by high level, RRC) signaling triggering terminal sends, comprise event send and periodically send two kinds of modes, the mode that event sends is that terminal just can send when receiving the signaling of base station, and the mode periodically sent supports eight kinds of cycles of 2ms, 5ms, 10ms, 20ms, 40ms, 80ms, 160ms, 320ms.
Based under the beamforming approach of code book, terminal calculates and feeding back precoding matrix index (Precooding Matrix Index, PMI) also will according to downlink channel condition information reference symbol (Channel State Information-Reference Signal while, CSI-RS) corresponding order instruction (RankIdcation is calculated, RI) and channel quality instruction (Channel Quality Indicator, CQI), and these metrical informations are fed back to base station, base station obtains pre-coding matrix in conjunction with PMI and other metrical informations, and carry out corresponding wave beam forming.
As can be seen here, when base station is determined to adopt the beamforming approach based on code book, the main metrical information of the terminal feedback that relies on carries out wave beam forming, and do not use SRS and carry out wave beam forming, the effect of SRS is only and is maintained uplink channel estimation, and effect significantly weakens.And up transmission SRS can take certain ascending wireless resource continually, affect cell uplink throughput.
Summary of the invention
Embodiments provide a kind of method and the base station equipment that control the transmission of detection reference signal SRS, in order to solve base station determine to adopt beamforming approach based on code book time, the effect of SRS is less, and up transmission SRS can take certain ascending wireless resource continually, affect the problem of cell uplink throughput.
The method of the transmission of a kind of control SRS that the embodiment of the present invention provides comprises:
The channel condition information of terminal is determined in base station;
Described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
When determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
A kind of base station equipment that the embodiment of the present invention provides comprises:
Parameter determination unit, for determining the channel condition information of terminal;
Mode determining unit, for determining and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
Indicating member, for when determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
In the embodiment of the present invention, the channel condition information of terminal is determined in base station, described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information, when determining that described beamforming approach is the wave beam forming based on code book, Indication message is sent to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or described terminal is indicated only to send SRS when receiving the signaling of described base station; When adopting the beamforming approach based on code book, base station does not need terminal frequent feedback SRS, base station indicating terminal increases the transmission cycle of SRS, or indicate described terminal only to send SRS when receiving the signaling of described base station, reduce SRS taking ascending wireless resource, improve uplink throughput.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for the transmission of the control SRS that the embodiment of the present invention provides;
Fig. 2 is the structural representation of the base station equipment that the embodiment of the present invention provides.
Embodiment
Embodiments provide method and the base station equipment of the transmission of a kind of control SRS, being provided for when adopting the beamforming approach based on code book, reducing SRS taking ascending wireless resource, promote uplink throughput.
As shown in Figure 1, the method for the transmission of a kind of control SRS that the embodiment of the present invention provides comprises:
The channel condition information of terminal is determined in S101, base station;
S102, described base station are determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
S103, when determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
Particularly, described channel condition information, comprise at least one in following parameter: Reference Signal Received Power (Reference Signal Received Power, RSRP), channel quality instruction (Channel QualityIndicator, and modulation coding mode (Modulation and Coding Scheme, MCS) CQI).Correspondingly, the channel condition information of terminal is determined in described base station, comprises with at least one under type: described base station receives the RSRP of described terminal to report; Described base station receives the CQI of described terminal to report; Described base station inquiry local record determines the MCS that described terminal is corresponding.
In step S102, when described base station determines that at least one in following condition is satisfied, determine that the beamforming approach adopted with described terminal transmission data is the wave beam forming based on code book: described RSRP is greater than the first preset value; The index value of described CQI is greater than the second preset value; The index value of described MCS is greater than the 3rd preset value.In a word, when described base station determines that the channel condition of terminal is better, the beamforming approach based on code book is adopted.Wherein, when RSRP is higher than the first preset value, this terminal heart position is in the cell thought in base station, and this terminal channel condition is better; When RSRP is lower than the first preset value, this terminal is thought in the cell outside the heart in base station.When the index value of the CQI of terminal feedback is higher than the second preset value, illustrate that terminal is in the good position of channel condition.When the index value of MCS is greater than the 3rd preset value, illustrate that terminal is in the good position of channel condition.Above-mentioned condition arbitrary or more than one combination meets time, base station thinks that the channel condition of terminal is better, such as terminal signaling and interference and noise ratio (Signal to Interference plusNoise Ratio, SINR) higher, translational speed is lower, then configuration antenna transmission mode in base station is the wave beam forming based on code book; Otherwise base station configuration antenna transmission mode is the wave beam forming measured based on SRS.
Described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information, comprising: described base station is according to the whole channel condition information determination channel condition information medians in predetermined period; Described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information median; Or described base station is determined and the beamforming approach that described terminal transmission data adopts according to the channel condition information that the last time is determined.Such as, the median of the index value of a MCS is added up in base station every predetermined period, judges whether channel condition can support the wave beam forming based on code book according to the median of the index value of MCS and the comparative result of described 3rd preset value; Like this, the fluctuation of network condition can be avoided wave beam forming to be selected to the interference caused.
Preferably, base station described in step S103 sends Indication message by RRC signaling to described terminal.Described base station sends Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, comprise: described base station sends Indication message to described terminal, indicate described terminal to send SRS to specify the transmission cycle, described appointment sends the default transmission cycle that the cycle is greater than described terminal transmission SRS.Such as: the default transmission cycle of terminal is 10ms, and base station indicating terminal is reconfigured for 80ms.Or described base station sends Indication message to described terminal, in order to indicate described terminal only to send SRS when receiving the signaling of described base station, base station indicating terminal when determining to need to carry out uplink channel estimation sends SRS.
Correspondingly, terminal, according to the configuration self-adaptative adjustment transmission mode of base station, adopts the wave beam forming based on code book, and message strengthens transmission SRS when SRS sends the cycle or waits for that the signaling of base station arrives as indicated.Like this, compared to original terminal to send more SRS compared with the short period, the transmission times of SRS can be reduced, reduce SRS to the consumption of ascending wireless resource.
A kind of base station equipment that the embodiment of the present invention provides as shown in Figure 2, comprising:
Parameter determination unit 201, for determining the channel condition information of terminal;
Mode determining unit 202, for determining and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
Indicating member 203, for when determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
The channel condition information that described parameter determination unit 201 is determined, comprises at least one in following parameter:
RSRP, CQI and MCS;
Described parameter determination unit specifically for:
Receive the RSRP of described terminal to report;
Receive the CQI of described terminal to report;
Inquiry local record determines the MCS that described terminal is corresponding.
When described mode determining unit 202 determines that at least one in following condition is satisfied, determine that described beamforming approach is the wave beam forming based on code book:
Described RSRP is greater than the first preset value;
The index value of described CQI is greater than the second preset value;
The index value of described MCS is greater than the 3rd preset value.
Described indicating member 203, for sending Indication message to described terminal, when increasing the transmission cycle of SRS in order to indicate described terminal, specifically comprises:
Send Indication message to described terminal, indicate described terminal to send SRS to specify the transmission cycle, described appointment sends the default transmission cycle that the cycle is greater than described terminal transmission SRS.
Described mode determining unit 202 specifically for:
According to the whole channel condition information determination channel condition information medians in predetermined period;
Determine and the beamforming approach that described terminal transmission data adopts according to described channel condition information median; Or,
Determine and the beamforming approach that described terminal transmission data adopts according to the channel condition information that the last time is determined.
In sum, embodiments provide method and the base station equipment of the transmission of a kind of control SRS, when base station is determined to adopt the beamforming approach based on code book, reduce SRS taking ascending resource, improve uplink throughput.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. control a method for the transmission of detection reference signal SRS, it is characterized in that, comprising:
The channel condition information of terminal is determined in base station;
Described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
When determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
2. the method for claim 1, is characterized in that, described channel condition information, comprises at least one in following parameter:
Reference Signal Received Power RSRP, channel quality indicator (CQI) and modulation coding mode MCS;
The channel condition information of terminal is determined in described base station, comprises with at least one under type:
Described base station receives the RSRP of described terminal to report;
Described base station receives the CQI of described terminal to report;
Described base station inquiry local record determines the MCS that described terminal is corresponding.
3. method as claimed in claim 2, is characterized in that, when described base station determines that at least one in following condition is satisfied, determine that described beamforming approach is the wave beam forming based on code book:
Described RSRP is greater than the first preset value;
The index value of described CQI is greater than the second preset value;
The index value of described MCS is greater than the 3rd preset value.
4. the method for claim 1, is characterized in that, described base station sends Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, comprising:
Described base station sends Indication message to described terminal, and indicate described terminal to send SRS to specify the transmission cycle, described appointment sends the default transmission cycle that the cycle is greater than described terminal transmission SRS.
5. the method for claim 1, is characterized in that, described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information, comprising:
When described base station is according to the whole channel condition information determination channel condition information medians in predetermined period;
Described base station is determined and the beamforming approach that described terminal transmission data adopts according to described channel condition information median; Or,
Described base station is determined and the beamforming approach that described terminal transmission data adopts according to the channel condition information that the last time is determined.
6. a base station equipment, is characterized in that, comprising:
Parameter determination unit, for determining the channel condition information of terminal;
Mode determining unit, for determining and the beamforming approach that described terminal transmission data adopts according to described channel condition information;
Indicating member, for when determining that described beamforming approach is the wave beam forming based on code book, sending Indication message to described terminal, in order to the transmission cycle indicating described terminal to increase SRS, or indicating described terminal only to send SRS when receiving the signaling of described base station.
7. equipment as claimed in claim 6, is characterized in that the channel condition information that described parameter determination unit is determined comprises at least one in following parameter:
RSRP, CQI and MCS;
Described parameter determination unit specifically for:
Receive the RSRP of described terminal to report;
Receive the CQI of described terminal to report;
Inquiry local record determines the MCS that described terminal is corresponding.
8. equipment as claimed in claim 7, is characterized in that, when described mode determining unit determines that at least one in following condition is satisfied, determine that described beamforming approach is the wave beam forming based on code book:
Described RSRP is greater than the first preset value;
The index value of described CQI is greater than the second preset value;
The index value of described MCS is greater than the 3rd preset value.
9. equipment as claimed in claim 6, is characterized in that, described indicating member is used for sending Indication message to described terminal, when increasing the transmission cycle of SRS in order to indicate described terminal, specifically comprises:
Send Indication message to described terminal, indicate described terminal to send SRS to specify the transmission cycle, described appointment sends the default transmission cycle that the cycle is greater than described terminal transmission SRS.
10. equipment as claimed in claim 6, is characterized in that, described mode determining unit specifically for:
According to the whole channel condition information determination channel condition information medians in predetermined period;
Determine and the beamforming approach that described terminal transmission data adopts according to described channel condition information median; Or,
Determine and the beamforming approach that described terminal transmission data adopts according to the channel condition information that the last time is determined.
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| WO2020164151A1 (en) * | 2019-02-15 | 2020-08-20 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
| CN115412135A (en) * | 2021-05-28 | 2022-11-29 | 中国移动通信集团山东有限公司 | Method, device and equipment for determining beamforming feedback mode and storage medium |
| CN115412135B (en) * | 2021-05-28 | 2023-09-19 | 中国移动通信集团山东有限公司 | Beam forming feedback mode determining method, device, equipment and storage medium |
| WO2023116535A1 (en) * | 2021-12-20 | 2023-06-29 | 中兴通讯股份有限公司 | Srs resource allocation method and apparatus, and computer-readable storage medium |
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