CN101959205B - Uplink measurement method and system for relay network - Google Patents
Uplink measurement method and system for relay network Download PDFInfo
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Abstract
The invention discloses an uplink measurement method in a relay network, which comprises: generating a measurement report according to the measurement of an uplink detection pilot frequency (SRS) signal; executing corresponding treatment according to the measurement report, wherein the measurement can be realized by at least one of blind detection, monitoring and signaling notification. The invention also discloses an uplink measurement system for the relay network. In the system, the measurement unit is used for measuring an uplink SRS signal, generating a measurement report and sending the measurement report to the processing unit; and the measurement is realized by at least one of blind detection, monitoring and signaling notification. When the method and the system of the invention are used, the normal data demodulation and receiving of downlink data are not affected, and compatibility with the user equipment of the conventional version is achieved; the accuracy of the measurement is improved, the signaling expense is reduced, the scheduling gain is ensured, and the transmission efficiency of the relay network is improved.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to an uplink measurement method and system in a relay network.
Background
Relay technology has attracted attention as an emerging technology, and is considered as a key technology of a super-Third Generation mobile communication system (B3G, Beyond The Third Generation in mobile communication system) or a Fourth Generation mobile communication system (4G), for example. This presents new challenges to wireless communication technology as future wireless communication or cellular systems require increased coverage to support higher rate transmissions. At the same time, the cost of system construction and maintenance is more problematic. As transmission rates and communication distances increase, battery power consumption becomes more problematic, and future wireless communications will use higher frequencies, resulting in more severe path loss attenuation. Through the relay technology, the traditional single-hop link can be divided into a plurality of multi-hop links, and the distance is shortened, so that the path loss is greatly reduced, the transmission quality is improved, the communication range is expanded, and faster and better service is provided for User Equipment (UE).
As shown in fig. 1, the relay network includes: relay stations, base stations, UEs and links between them. Wherein, a link between the UE which the relay station participates in the service and the relay station is called as an access link; the link between the relay and the base station is called a backhaul link; the link between a UE and a base station that the base station is involved in serving is called a direct link.
As shown in fig. 2, when the UE is located in an area jointly covered by the base station and the relay station, a cooperative communication manner may be adopted, that is: the base station and the relay station serve the UE together, so that the system capacity and the resource utilization efficiency can be improved.
Since the self-interference causes the relay station not to receive and transmit simultaneously on the same frequency band, and is limited by processing capability and coverage, it is difficult and not necessary for a relay station to serve all UEs in a cell. In order to utilize the resources of the relay station more reasonably, a part of the UEs needing the relay station to assist communication can be selected by the network side from the UEs in the cell to receive the services of the relay station; in a cell, a plurality of relay stations may exist simultaneously, and since the positions of the relay stations are different, the service effect of each relay station on a certain UE is also different, so that not only a part of UEs need to be selected to receive the service of the relay station first, but also a specific relay station or relay stations need to be selected to serve a certain UE, that is, a communication route needs to be selected for the UE, and radio resources used for communication need to be allocated for the UE, as shown in fig. 3, fig. 3 includes three UEs, three relay stations and one base station, and in cooperative communication, a plurality of communication routes are included among the base station, each relay station and each UE.
In the prior art, since the relay station for intra-Cell cooperative communication does not have an independent Cell ID, there is no independent common pilot signal (CRS), so that the UE cannot distinguish different nodes by the CRS, and continues to use the downlink measurement method of Long Term Evolution (LTE) or coordinated multi-site transmission (CoMP). Wherein, a node refers to a base station or a relay station. At present, for distinguishing each node and allocating resources according to the quality of service provided by each node, the existing solutions adopted are: and transmitting CRS between each node in a time division manner to finish downlink measurement. Therefore, the measurement feedback of the UE in the connection state aiming at the CRS of a certain subframe contains the distinguishing information of the nodes, and after the base station receives the measurement feedback of the UE, the base station can judge the quality of the service effect of different nodes to the certain UE according to the position of the corresponding subframe, so that the base station distributes routing and wireless resources to the UE.
The existing solution has the following disadvantages: in an LTE system, since an old-version UE needs to demodulate data according to a downlink CRS, if a relay station also transmits the CRS, the UE cannot separate the CRS used for demodulation from the CRS used for measurement, which may cause performance degradation of data demodulation and affect accuracy of measurement, thereby reducing scheduling gain and system performance.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide an uplink measurement method and system in a relay network, which will not affect normal data demodulation and reception of downlink data, and are compatible with UE of the old version; the accuracy of measurement is improved, so that the signaling overhead is reduced, the scheduling gain is ensured, and the transmission efficiency of the relay network is improved.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an uplink measurement method in a relay network, the method comprising:
generating a measurement report based on the measurement of the uplink sounding pilot SRS signal; executing corresponding processing according to the measurement report; wherein,
the way to achieve the measurement includes: blind detection, monitoring and signaling.
In a single mode, the measuring the uplink SRS signal specifically includes:
the relay station carries out blind detection and reception on the uplink SRS signals from the measured node and realizes indirect measurement on the uplink SRS signals; or,
monitoring all or part of SRS configuration parameters configured for a measured node by a previous-level network node; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal; or,
the upper-level network node informs the relay station of all or part of SRS configuration parameters configured for the measured node through signaling; and the relay station receives the corresponding uplink SRS signal according to the obtained SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
In the combined manner, the measuring of the uplink SRS signal specifically includes:
monitoring partial SRS configuration parameters configured for a measured node by a previous-stage network node; the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
the upper-level network node informs the relay station of partial SRS configuration parameters configured for the measured node through signaling; the relay station reduces the blind detection range according to the obtained SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes direct measurement of the uplink SRS signal; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
Wherein, the corresponding processing specifically comprises: the relay station does not report the measurement report to the upper-level network node, and the relay station executes the processing aiming at the measurement report; or,
the relay station reports the measurement report to the upper level network node, and the upper level network node executes the processing aiming at the measurement report.
The measurement report includes a measurement result, and optionally further includes at least one of a partial or entire SRS configuration parameter of the measured node corresponding to the measurement result, and other information identifying the measured node.
Wherein the processing for measurement report specifically includes: and allocating the route and/or wireless resources for the measured node according to the measurement report.
Wherein, the upper level network node specifically includes: a base station and/or a superior relay station; the measured node specifically includes: user equipment and/or a next level relay station.
Wherein, the measurement result specifically includes: a quantized value characterizing a channel quality state, or the result of further quantizing said quantized value.
Wherein the SRS configuration parameters specifically include: at least one of SRS bandwidth configuration parameters, SRS subframe configuration parameters, successful response/failed response and SRS coexistence switch parameters, maximum uplink special time slot parameters, SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters, SRS configuration index parameters, transmission retrieval parameters and cyclic shift parameters.
An uplink measurement system in a relay network, the system comprising: a measuring unit and a processing unit; wherein,
the measurement unit is used for measuring the uplink SRS signal and generating a measurement report; sending the measurement report to the processing unit; wherein, the mode of realizing the measurement comprises the following steps: at least one mode of blind detection, monitoring and signaling notification;
and the processing unit is used for executing corresponding processing according to the measurement report.
In a single mode, the measurement unit is further configured to perform blind detection and reception on the uplink SRS signal from the measured node by the relay station, and implement indirect measurement on the uplink SRS signal; or,
monitoring all or part of SRS configuration parameters configured for a measured node by a previous-level network node; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal; or,
the upper-level network node informs the relay station of all or part of SRS configuration parameters configured for the measured node through signaling; and the relay station receives the corresponding uplink SRS signal according to the obtained SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
In a combined manner, the measurement unit is further configured to monitor a part of SRS configuration parameters configured for a measured node by a previous network node; the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
the upper-level network node informs the relay station of partial SRS configuration parameters configured for the measured node through signaling; the relay station reduces the blind detection range according to the obtained SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes direct measurement of the uplink SRS signal; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
The processing unit is further configured to not report the measurement report to the upper-level network node by the relay station, and perform processing on the measurement report by the relay station itself; or,
the processing unit is further configured to report the measurement report to the upper level network node by the relay station, and the upper level network node performs processing on the measurement report.
The method generates a measurement report based on the measurement of an uplink Sounding Reference Signal (SRS); executing corresponding processing according to the measurement report; wherein, the mode of realizing the measurement includes: blind detection, monitoring and signaling.
The invention utilizes the uplink measurement to solve the defects of the prior solution, receives and measures the uplink SRS signal of the UE, and adopts at least one mode of blind detection, monitoring and signaling notification to realize the measurement; and generating a measurement report according to the measurement result for operations such as routing, wireless resource allocation and the like, so that the normal reception of data is not influenced, the UE of the old version is compatible, the signaling overhead is reduced, the scheduling gain is ensured, and the transmission efficiency of the relay network is improved.
Drawings
Fig. 1 is a schematic system architecture of a conventional relay network;
FIG. 2 is a schematic diagram of a network in cooperative communication with a relay network;
FIG. 3 is a schematic diagram of another networking in cooperative communication of a relay network;
FIG. 4 is a schematic flow chart of the implementation of the method of the present invention;
FIG. 5 is a schematic flow chart of a first implementation of the method of the present invention;
FIG. 6 is a schematic flow chart of a second implementation of the method of the present invention;
FIG. 7 is a schematic flow chart of a third implementation of the method of the present invention;
FIG. 8 is a schematic flow chart of a fourth implementation of the method of the present invention;
FIG. 9 is a schematic flow chart of a fifth implementation of the method of the present invention;
FIG. 10 is a schematic flow chart of a sixth implementation of the method of the present invention;
FIG. 11 is a schematic flow chart of a seventh implementation of the method according to the embodiment of the present invention;
FIG. 12 is a schematic diagram of the structure of the system of the present invention.
Detailed Description
The basic idea of the invention is: generating a measurement report based on the measurement of the uplink SRS signal; executing corresponding processing according to the measurement report; wherein, the mode of realizing the measurement includes: blind detection, monitoring and signaling.
The following describes the embodiments in further detail with reference to the accompanying drawings.
As shown in fig. 4, an uplink measurement method in a relay network includes the following steps:
step 101, generating a measurement report based on the measurement of an uplink SRS signal in a relay network; the method for realizing the measurement comprises at least one of blind detection, monitoring and signaling notification.
And 102, executing corresponding processing according to the measurement report.
Here, regarding the manner of implementing the measurement in step 101, the manner of implementing the measurement includes a single manner of employing any one of blind detection, monitoring and signaling notification, and also includes a combined manner of employing multiple manners of blind detection, monitoring and signaling notification, which are set forth below respectively.
The first implementation under a single mode: the measuring of the uplink SRS signal in the relay network specifically includes: the relay station carries out blind detection and reception on the uplink SRS signals from the measured node, and indirect measurement on the uplink SRS signals is realized. The relay station traverses the selectable SRS configuration parameters during blind detection so as to realize blind detection and reception of uplink SRS signals from the measured node.
The second specific implementation in a single mode: the measuring of the uplink SRS signal in the relay network specifically includes: the relay station monitors all or part of SRS configuration parameters configured for the measured node by the upper-level network node; and the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
A third implementation in a single mode: the measuring of the uplink SRS signal in the relay network specifically includes: the upper-level network node informs the relay station of all or part of SRS configuration parameters configured for the measured node through signaling; and the relay station receives the corresponding uplink SRS signal according to the obtained SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
The first implementation under the combined mode: the measuring of the uplink SRS signal in the relay network specifically includes: the relay station monitors partial SRS configuration parameters configured for a measured node by a previous-stage network node; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
A second specific implementation in combination: the measuring of the uplink SRS signal in the relay network specifically includes: the upper-level network node informs the relay station of partial SRS configuration parameters configured for the measured node through signaling; and the relay station reduces the blind detection range according to the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
A third specific implementation in combination: the measuring of the uplink SRS signal in the relay network specifically includes: the relay station monitors partial SRS configuration parameters configured for the measured node by the previous network node, and the previous network node informs the relay station of the partial SRS configuration parameters configured for the measured node through signaling; and the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes the direct measurement of the uplink SRS signal.
A fourth implementation in combination: the measuring of the uplink SRS signal in the relay network specifically includes: the relay station monitors partial SRS configuration parameters configured for the measured node by the previous network node, and the previous network node informs the relay station of the partial SRS configuration parameters configured for the measured node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
Here, the corresponding processing in step 102 includes two specific implementations, the first specific implementation: the corresponding processing specifically includes: the relay station does not report the measurement report to the upper-level network node, and the relay station executes the processing aiming at the measurement report. The second implementation is as follows: the corresponding processing specifically includes: the relay station reports the measurement report to the upper level network node, and the upper level network node executes the processing aiming at the measurement report.
For the measurement report in step 102, the measurement report at least includes the measurement result, and may also include part or all of the SRS configuration parameters of the measured node corresponding to the measurement result, or other information identifying the measured node. That is, the measurement report must include the measurement result, and optionally may further include at least one of a part or all of SRS configuration parameters of the measured node corresponding to the measurement result, and other information identifying the measured node. Wherein, the information of other identifiers measured node refers to: the information for identifying the identity of the measured node may be a user identity.
Here, the processing for the measurement report specifically includes: and allocating the route and/or wireless resources for the measured node according to the measurement report.
It should be noted that the above-mentioned upper-level network node specifically includes: a base station and/or a superior relay station; the measured node specifically includes: UE and/or next level relay station.
The measurement results referred to above specifically include: a quantized value characterizing the channel quality state, or the result of further quantizing the quantized value. For example, the quantized value may be a Channel Quality Indicator (CQI) value, and the result of further quantization is: a value further quantizing the value of CQI.
The SRS configuration parameters mentioned above specifically include: at least one of an SRS bandwidth configuration parameter, an SRS subframe configuration parameter, a successful Acknowledgement (ACK)/failed acknowledgement (NACK) and SRS coexistence switch parameter, a maximum uplink special slot parameter, an SRS bandwidth parameter, an SRS hopping bandwidth parameter, a frequency domain location parameter, a duration parameter, an SRS configuration index parameter, a transmission retrieval parameter, a cyclic shift parameter, and other SRS configuration parameters.
In summary, according to the uplink measurement scheme in the relay network provided by the present invention, the relay station receives and measures the SRS signals from each measured node, and generates the measurement report according to the measurement result, so that the normal reception of data is not affected, and the uplink measurement scheme is compatible with the UE of the old version, thereby reducing signaling overhead, ensuring scheduling gain, and improving the transmission efficiency of the relay network.
Here, it should be noted that: the following method embodiments take a cell in a relay network as an example, in the relay network, eNB is a base station, RN1 is a primary relay station, RN2 is a secondary relay station, that is, RN1 is a primary relay station of RN2, RN2 is a secondary relay station of RN1, and UE is one of user equipments in the cell.
The first embodiment of the method comprises the following steps:
the relay station RN1 performs blind detection on SRS signals on 5 continuous uplink subframes, measures the SRS signals detected in the blind mode, correspondingly obtains a CQI value of a measurement result, writes the CQI value, SRS configuration index parameters and cyclic shift parameters corresponding to the measurement into a measurement report, and sends the measurement report to the eNB, and the eNB allocates routes for UE and RN2 according to the measurement report.
Briefly, as shown in fig. 5, the method embodiment comprises the following steps:
step 201, the RN1 blindly detects and measures the SRS signal.
Step 202, RN1 generates and sends a measurement report to the eNB.
Step 203, the eNB allocates routes for the UE and the RN 2.
The second method embodiment:
the relay station RN2 monitors SRS bandwidth configuration parameters, SRS subframe configuration parameters, ACK/NACK and SRS coexistence switch parameters, maximum uplink special time slot parameters, SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters, SRS configuration index parameters, transmission retrieval parameters and cyclic shift parameters configured by the RN1, the RN1 directly receives and measures uplink SRS signals based on the obtained SRS configuration parameters, correspondingly obtains measurement results, writes the measurement results into a measurement report, but does not send the measurement report to the eNB and the RN1, and the RN2 directly allocates wireless resources for the UE according to the measurement report.
Briefly, as shown in fig. 6, the method embodiment comprises the following steps:
step 301, the RN2 listens for the SRS configuration parameters.
Step 303, RN2 directly receives and measures SRS signal.
Step 303, RN2 generates measurement report, but does not send measurement report to eNB and RN 1.
Step 304, RN2 directly allocates radio resource for UE.
The third method embodiment:
the base station eNB signals the relay RN 1: the method comprises the steps that SRS bandwidth configuration parameters, SRS subframe configuration parameters, ACK/NACK and SRS coexistence switch parameters, maximum uplink special time slot parameters, SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters, SRS configuration index parameters, transmission retrieval parameters and cyclic shift parameters, RN1 directly receives and measures uplink SRS signals based on the obtained SRS configuration parameters, correspondingly obtains measurement results, writes the SRS configuration index parameters corresponding to the measurement result measurement into a measurement report together, sends the measurement report to eNB, and the eNB allocates routing and wireless resources for UE according to the measurement report.
Briefly, as shown in fig. 7, the method embodiment comprises the following steps:
step 401, the eNB signals the SRS configuration parameters to the RN 1.
Step 402, RN1 directly receives and measures SRS signals.
In step 403, RN1 generates a measurement report and sends the measurement report to the eNB.
Step 404, the eNB allocates a route and radio resources to the UE.
The method comprises the following steps:
the relay station RN2 monitors SRS bandwidth configuration parameters, SRS subframe configuration parameters, ACK/NACK and SRS coexistence switch parameters, maximum uplink special time slot parameters and SRS configuration index parameters configured by the RN1, the RN2 narrows a blind detection range based on the monitored SRS configuration parameters, performs blind detection on SRS signals on uplink SRS subframes, measures the blind detected SRS signals, obtains a corresponding measurement result, writes the measurement result, the SRS configuration index parameters corresponding to the measurement and cyclic shift parameters into a measurement report, and sends the measurement report to the RN1, and the RN1 allocates routing and uplink wireless resources for the UE according to the measurement report.
Briefly, as shown in fig. 8, the method embodiment comprises the following steps:
step 501, the RN2 listens for partial SRS configuration parameters.
Step 502, the RN2 performs blind detection reception and measures SRS signals.
Step 503, RN2 generates and sends a measurement report to RN 1.
Step 504, RN1 allocates route and radio resource for UE.
Method example five:
the relay RN1 informs the relay RN2 by signaling: the method comprises the steps that SRS bandwidth configuration parameters, SRS subframe configuration parameters, ACK/NACK and SRS coexistence switch parameters, maximum uplink special time slot parameters and SRS configuration index parameters are adopted, the RN2 reduces a blind detection range based on the obtained SRS configuration parameters, carries out blind detection on SRS signals on uplink SRS subframes, measures the SRS signals received by the blind detection, correspondingly obtains a further quantized value of a CQI value as a measurement result, writes the measurement result and the corresponding cyclic shift parameters into a measurement report, sends the measurement report to the RN1, and distributes routing for UE through the RN1 according to the measurement report.
Briefly, as shown in fig. 9, the method embodiment comprises the following steps:
step 601, RN1 signals the partial SRS configuration parameters to RN 2.
Step 602, the RN2 performs blind detection reception and measures SRS signals.
Step 603, RN2 generates and sends a measurement report to RN 1.
Step 604, RN1 allocates a route for the UE.
Method example six:
the relay node RN2 monitors the SRS bandwidth configuration parameter, SRS subframe configuration parameter, ACK/NACK and SRS coexistence switch parameter, and maximum uplink special slot parameter configured by the RN1, and the RN1 notifies the RN2 through signaling: the method comprises the steps that SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters, SRS configuration index parameters, transmission retrieval parameters and cyclic shift parameters, the RN2 directly receives and measures uplink SRS signals based on the obtained SRS configuration parameters, correspondingly obtains measurement results, writes the measurement results into a measurement report, but does not send the measurement report to the eNB and the RN1, and the RN2 directly distributes routes for the UE according to the measurement report.
Briefly, as shown in fig. 10, the method embodiment comprises the following steps:
step 701, the RN2 monitors partial SRS configuration parameters; the RN1 signals the partial SRS configuration parameters to the RN 2.
Step 702, RN2 directly receives and measures SRS signal.
Step 703, RN2 generates measurement report, but does not send measurement report to eNB and RN 1.
Step 704, RN2 directly allocates a route for the UE.
Method embodiment seven:
the relay node RN1 monitors SRS bandwidth configuration parameters, SRS subframe configuration parameters, ACK/NACK and SRS coexistence switch parameters and maximum uplink special time slot parameters configured by the eNB, and the eNB informs the RN1 through signaling: the method comprises the steps that SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters and SRS configuration index parameters, RN1 reduces a blind detection range based on the obtained SRS configuration parameters, carries out blind detection and reception on uplink SRS signals, measures the signals received by the blind detection, correspondingly obtains a measurement result which is a further quantized value of a CQI value, writes the measurement result and cyclic shift parameters corresponding to the measurement into a measurement report, sends the measurement report to eNB, and the eNB distributes a route for UE according to the measurement report.
Briefly, as shown in fig. 11, the method embodiment comprises the following steps:
step 801, monitoring partial SRS configuration parameters by RN 1; the eNB signals the RN1 with the partial SRS configuration parameters.
Step 802, the RN1 performs blind detection reception and measures SRS signals.
Step 803, RN1 generates and sends a measurement report to the eNB.
Step 804, the eNB allocates a route for the UE.
As shown in fig. 12, an uplink measurement system in a relay network includes: measurement unit, processing unit. The measurement unit is used for measuring uplink SRS signals in the relay network and generating a measurement report; sending the measurement report to a processing unit; wherein, the mode of realizing the measurement includes: blind detection, monitoring and signaling. And the processing unit is used for executing corresponding processing according to the measurement report.
For the measurement unit, in a single manner, a first specific implementation of the measurement unit is: the measurement unit is further configured to perform blind detection and reception on the uplink SRS signal from the measured node by the relay station, and implement indirect measurement on the uplink SRS signal.
In a single mode, the second implementation of the measurement unit is: the measurement unit is further used for the relay station to monitor all or part of SRS configuration parameters configured for the measured node by the previous-stage network node; and the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
In a single mode, the third implementation of the measurement unit is: the measurement unit is further used for the upper level network node to configure all or part of SRS configuration parameters for the measured node, and the parameters are informed to the relay station through signaling; and the relay station receives the corresponding uplink SRS signal according to the obtained SRS configuration parameters and realizes the direct measurement of the uplink SRS signal.
In a combined manner, a first specific implementation of the measurement unit is: the measurement unit is further used for the relay station to monitor partial SRS configuration parameters configured for the measured node by the previous-stage network node; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
In the combined manner, the second implementation of the measurement unit is: the measurement unit is further used for notifying the relay station of partial SRS configuration parameters to be configured for the measured node by the upper-level network node through signaling; and the relay station reduces the blind detection range according to the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
In combination, the third implementation of the measurement unit is: the measurement unit is further used for the relay station to monitor partial SRS configuration parameters configured for the measured node by the previous network node, and the previous network node informs the relay station of the partial SRS configuration parameters configured for the measured node through signaling; and the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes the direct measurement of the uplink SRS signal.
In combination, the fourth implementation of the measurement unit is: the measurement unit is further used for the relay station to monitor partial SRS configuration parameters configured for the measured node by the previous network node, and the previous network node informs the relay station of the partial SRS configuration parameters configured for the measured node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
For a processing unit, a specific implementation is: the processing unit is further configured to perform, by the relay station itself, processing for the measurement report without reporting the measurement report to the upper-level network node. The other concrete implementation is as follows: the processing unit is further configured to report the measurement report to a previous network node by the relay station, and the previous network node performs processing on the measurement report.
The SRS bandwidth configuration parameter referred to above is SRS-BandwidthhConfig; SRS subframe configuration parameter number SRS-subframe config; the ACK/NACK and SRS coexistence switch parameter refers to ackNackSRS-SimultaneousTransmission; the maximum uplink special time slot parameter refers to srs-MaxUpPts; SRS Bandwidth parameter number SRS-Bandwidth; the SRS frequency hopping bandwidth parameter is SRS-hoppingBandwidth; the frequency domain position parameter refers to freqDomainPosition; duration parameter refers to duration; SRS configuration index parameter index SRS-ConfigIndex; the transmission retrieval parameter refers to transmissionComb; the cyclic shift parameter refers to cyclicShift.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (11)
1. An uplink measurement method in a relay network, the method comprising:
generating a measurement report based on the measurement of the uplink sounding pilot SRS signal; executing corresponding processing according to the measurement report; wherein,
the way to achieve the measurement includes: at least one mode of blind detection, monitoring and signaling notification;
in a single mode, measuring the uplink SRS signals:
the relay station carries out blind detection and reception on the uplink SRS signals from the measured node and realizes indirect measurement on the uplink SRS signals; or,
monitoring all or part of SRS configuration parameters configured for a measured node by a previous-level network node; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal; or,
the upper-level network node informs the relay station of all or part of SRS configuration parameters configured for the measured node through signaling; the relay station receives corresponding uplink SRS signals according to the obtained SRS configuration parameters and realizes direct measurement of the uplink SRS signals;
in a combination manner, the measuring of the uplink SRS signal specifically includes:
monitoring partial SRS configuration parameters configured for a measured node by a previous-stage network node; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
2. The method of claim 1, wherein in the combined mode, the measuring the uplink SRS signals further comprises:
the upper-level network node informs the relay station of partial SRS configuration parameters configured for the measured node through signaling; the relay station reduces the blind detection range according to the obtained SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes direct measurement of the uplink SRS signal; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
3. The method according to claim 1 or 2, wherein the corresponding processing specifically comprises: the relay station does not report the measurement report to the upper-level network node, and the relay station executes the processing aiming at the measurement report; or,
the relay station reports the measurement report to the upper level network node, and the upper level network node executes the processing aiming at the measurement report.
4. The method according to claim 3, wherein the measurement report includes measurement results, and optionally further includes at least one of partial or all SRS configuration parameters of the measured node corresponding to the measurement results, and other information identifying the measured node.
5. The method according to claim 3, wherein the processing for measurement reports specifically comprises: and allocating the route and/or wireless resources for the measured node according to the measurement report.
6. The method according to claim 3, wherein the upper level network node specifically comprises: a base station and/or a superior relay station; the measured node specifically includes: user equipment and/or a next level relay station.
7. The method according to claim 4, wherein the measurement result specifically comprises: a quantized value characterizing a channel quality state, or the result of further quantizing said quantized value.
8. The method according to claim 3, wherein the SRS configuration parameters specifically include: at least one of SRS bandwidth configuration parameters, SRS subframe configuration parameters, successful response/failed response and SRS coexistence switch parameters, maximum uplink special time slot parameters, SRS bandwidth parameters, SRS frequency hopping bandwidth parameters, frequency domain position parameters, duration parameters, SRS configuration index parameters, transmission retrieval parameters and cyclic shift parameters.
9. An uplink measurement system in a relay network, the system comprising: a measuring unit and a processing unit; wherein,
the measurement unit is used for measuring the uplink SRS signal and generating a measurement report; sending the measurement report to the processing unit; wherein, the mode of realizing the measurement comprises the following steps: at least one mode of blind detection, monitoring and signaling notification;
in a single mode, the measurement unit is further configured to perform blind detection and reception on the uplink SRS signal from the measured node by the relay station, and implement indirect measurement on the uplink SRS signal; or,
monitoring all or part of SRS configuration parameters configured for a measured node by a previous-level network node; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and realizes the direct measurement of the uplink SRS signal; or,
the upper-level network node informs the relay station of all or part of SRS configuration parameters configured for the measured node through signaling; the relay station receives corresponding uplink SRS signals according to the obtained SRS configuration parameters and realizes direct measurement of the uplink SRS signals;
in a combination manner, the measuring of the uplink SRS signal specifically includes:
monitoring partial SRS configuration parameters configured for a measured node by a previous-stage network node; the relay station reduces the blind detection range according to the monitored SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals;
and the processing unit is used for executing corresponding processing according to the measurement report.
10. The system according to claim 9, wherein in the combined mode, the measurement unit is further configured to notify the relay station of a partial SRS configuration parameter to be configured for the measured node by the previous network node through signaling; the relay station reduces the blind detection range according to the obtained SRS configuration parameters, performs blind detection receiving on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; the relay station receives the corresponding uplink SRS signal according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, and realizes direct measurement of the uplink SRS signal; or,
monitoring partial SRS configuration parameters configured for the measured node by the previous network node, and informing the relay station of the partial SRS configuration parameters configured for the measured node by the previous network node through signaling; and the relay station reduces the blind detection range according to the monitored SRS configuration parameters and the acquired SRS configuration parameters, performs blind detection and reception on the uplink SRS signals, and realizes indirect measurement on the uplink SRS signals.
11. The system according to claim 9 or 10, wherein the processing unit is further configured to perform the processing for the measurement report by the relay station itself without the relay station reporting the measurement report to the upper level network node; or,
the processing unit is further configured to report the measurement report to the upper level network node by the relay station, and the upper level network node performs processing on the measurement report.
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| CN110505639B (en) * | 2018-05-16 | 2023-01-24 | 成都鼎桥通信技术有限公司 | Relay measurement configuration method and device |
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| WO2008051061A1 (en) * | 2006-10-27 | 2008-05-02 | Electronics And Telecommunications Research Institute | Method for reporting a channel quality information in wireless communication system |
| CN101384055A (en) * | 2007-09-05 | 2009-03-11 | 北京三星通信技术研究有限公司 | Device and method for configuring uplink reference signal for channel measurement |
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| US7184703B1 (en) * | 2003-06-06 | 2007-02-27 | Nortel Networks Limited | Multi-hop wireless communications system having relay equipments which select signals to forward |
| CN101142768A (en) * | 2005-03-14 | 2008-03-12 | 松下电器产业株式会社 | Wireless communication system |
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