CN103856300A - Method and device for transmitting user feedback information - Google Patents
Method and device for transmitting user feedback information Download PDFInfo
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Abstract
This invention discloses a method and a device for transmitting user information. The method comprises that: the first base station determines that the first base station needs to transmit user feedback information to the second base station; the first base station transmits first request information to the second base station; the first request information is used for showing that the first base station needs to transmit the user feedback information to the second base station; and the first base station transmits the user feedback information corresponding to the second base station to the second base station according to the condition that the second base station needs to receive user feedback information. In the embodiment of the invention, all the base stations taking part in the cooperation can be guaranteed to receive complete and accurate user feedback information, the user dispatch process performed by the base station can be better supported and non-periodic CSI feedback of the cooperative base station can be also supported.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting user feedback information.
Background
CoMP (Coordinated Multipoint Transmission/Reception) technology refers to cooperation between a plurality of Transmission points separated geographically. Generally, the plurality of transmission points are base stations of different cells, or a plurality of RRHs (Remote Radio heads) controlled by the same cell base station. Through cooperative transmission among a plurality of transmission points, the interference among different transmission points can be effectively reduced, and the throughput of users (especially cell edge users) is improved.
The downlink CoMP technology includes CS/CB (Cooperative Scheduling/Beamforming) and Joint processing (Joint processing). Wherein:
the cooperative scheduling is to avoid or reduce mutual interference through coordination of time, frequency and space resources among transmission points; since inter-cell interference is a major factor that restricts cell edge user performance, cooperative scheduling can improve cell edge user performance by reducing inter-cell interference.
The joint processing comprises two modes of dynamic transmission point switching and joint sending. In the dynamic transmission point switching mode, a base station dynamically switches transmission points for sending signals to users, and selects an optimal transmission point to transmit data; in order to realize dynamic transmission point switching, the base station needs to obtain channel information of multiple optional cells through a feedback channel, or obtain channel information of an optimal transmission point. In the joint transmission mode, a plurality of transmission points transmit data to a user at the same time, so as to enhance the user received Signal, convert a possible Interference Signal into a useful Signal, and improve the user SINR (Signal to Interference plus Noise Ratio).
However, the above CoMP techniques do not consider backhaul delay and capacity limitation, and if cooperative transmission is performed between different base stations, backhaul delay and capacity limitation may exist between the base stations; at this point CoMP techniques (especially joint processing) will be difficult to implement; in such a scenario, in order to enable a user to obtain a gain of multi-point coordination, an inter-eNodeB CoMP (inter-base station CoMP) technology (e.g., a multi-flow transmission scheme) is currently proposed.
In the multi-flow transmission scheme, a plurality of base stations are allowed to simultaneously and independently schedule one user, so that the transmission performance of the user and the resource utilization rate of each cell are improved; as shown in fig. 1, which is a schematic diagram of a multi-flow transmission scheme for two base stations to a same user, two cells schedule users through respective resources and configuration information, the users simultaneously detect and correspondingly feed back scheduling information and transmission data of the two cells, each base station receives feedback information from the users (each base station may only receive feedback information corresponding to the base station or receive feedback information of all base stations), and then uses the feedback information of the base station to perform subsequent scheduling.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
when the quality of the uplink channel of a certain base station is poor, it may affect the base station to correctly receive the feedback information from the user, and further affect the data scheduling and transmission of the user on the base station.
Disclosure of Invention
The embodiment of the invention provides a method and equipment for transmitting user feedback information, which are used for ensuring that all base stations participating in cooperation can obtain complete and accurate user feedback information.
In order to achieve the above object, an embodiment of the present invention provides a method for transmitting user feedback information, including:
the method comprises the steps that a first base station determines that the first base station needs to send user feedback information to a second base station;
the first base station sends a first request message to the second base station, wherein the first request message is used for indicating that the first base station needs to send user feedback information to the second base station;
and the first base station sends the user feedback information corresponding to the second base station according to the condition that the second base station needs to receive the user feedback information.
The embodiment of the invention provides a method for transmitting user feedback information, which comprises the following steps:
a second base station receives a first request message from a first base station, wherein the first request message is used for indicating that the first base station needs to send user feedback information to the second base station;
and when the second base station needs to receive the user feedback information, receiving the user feedback information corresponding to the second base station from the first base station.
The embodiment of the invention provides a method for transmitting user feedback information, which comprises the following steps:
a first base station determines that the first base station needs to receive user feedback information from a second base station;
the first base station sends a second request message to the second base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station;
and when the second base station allows to send user feedback information to the first base station, the first base station receives the user feedback information corresponding to the first base station from the second base station.
The embodiment of the invention provides a method for transmitting user feedback information, which comprises the following steps:
a second base station receives a second request message from a first base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station;
and the second base station sends the user feedback information corresponding to the first base station when the second base station allows the user feedback information to be sent to the first base station.
An embodiment of the present invention provides a base station apparatus, as a first base station, where the first base station includes:
the first determining module is used for determining that the first base station needs to send user feedback information to the second base station;
a first sending module, configured to send a first request message to the second base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
and the second sending module is used for sending the user feedback information corresponding to the second base station according to the condition that the second base station needs to receive the user feedback information.
An embodiment of the present invention provides a base station apparatus, as a second base station, where the second base station includes:
a first receiving module, configured to receive a first request message from a first base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
and a second receiving module, configured to receive, when user feedback information needs to be received, user feedback information corresponding to the second base station from the first base station.
An embodiment of the present invention provides a base station apparatus, as a first base station, where the first base station includes:
a second determining module, configured to determine that the first base station needs to receive user feedback information from the second base station;
a fourth sending module, configured to send a second request message to the second base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a third receiving module, configured to receive, when the second base station allows sending user feedback information to the first base station, user feedback information corresponding to the first base station from the second base station.
An embodiment of the present invention provides a base station apparatus, as a second base station, where the second base station includes:
a fourth receiving module, configured to receive a second request message from a first base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a fifth sending module, configured to send, when it is allowed to send user feedback information to the first base station, user feedback information corresponding to the first base station.
Compared with the prior art, the embodiment of the invention at least has the following advantages: in the embodiment of the invention, all base stations participating in the cooperation can be ensured to obtain complete and accurate user feedback Information, so that the scheduling process of the base station to the user can be better supported, and the feedback of the aperiodic CSI (Channel State Information) of the cooperative base station can be supported.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram of a multi-flow transmission scheme of two base stations to the same user in the prior art;
fig. 2 is a flowchart illustrating a method for transmitting user feedback information according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating a method for transmitting user feedback information according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base station device according to a sixth embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station device according to a seventh embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base station device according to an eighth embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station device according to a ninth embodiment of the present invention.
Detailed Description
The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
An embodiment of the present invention provides a method for transmitting user feedback information, where the method may be applied in an application scenario where multiple base stations simultaneously and independently schedule a user, such as inter-eNodeB CoMP (e.g., multi-flow transmission scheme), and as shown in fig. 2, the method includes the following steps:
In an application scenario that a plurality of base stations simultaneously and independently schedule a user, a base station corresponding to a cell to which the user belongs is called a serving base station, and another (or a plurality of) base stations cooperating with the serving base station are called cooperative base stations; in practical application, the first base station may be a serving base station, and the second base station may be a cooperative base station; alternatively, the first base station may be a cooperative base station, and the second base station may be a serving base station; alternatively, the first base station may be a cooperative base station and the second base station may be a cooperative base station.
In the embodiment of the present invention, the user feedback information includes, but is not limited to, one or any combination of the following: downlink CSI information fed back by a user; ACK (positive acknowledgement)/NACK (negative acknowledgement) information fed back by the user; and triggering and/or configuring information and the like of aperiodic CSI feedback by the user.
In the embodiment of the present invention, the determining, by the first base station, that the first base station needs to send the user feedback information to the second base station includes, but is not limited to, the following manners:
in the first method, when the first base station determines that the uplink channel quality of the second base station is lower than a preset first threshold value by using RSRP (Reference Signal Received Power) information corresponding to the second base station (that is, the first base station determines that the uplink channel quality of the second base station is poor), it is determined that the first base station needs to send user feedback information to the second base station.
And secondly, when the user feedback information is downlink CSI information fed back by the user, if the first base station triggers aperiodic feedback of CSI information corresponding to the second base station, and when the aperiodic CSI feedback information corresponding to the second base station is received, it is determined that the first base station needs to send the user feedback information (namely the downlink CSI information fed back by the user) to the second base station. The downlink CSI fed back by the user comprises aperiodic CSI feedback information, periodic CSI feedback information and the like.
In the embodiment of the present invention, the first request message may include attribute information corresponding to the user feedback information; or the format of the first request message has a corresponding relation with the attribute information corresponding to the user feedback information. For the above two cases, the attribute information corresponding to different user feedback information may be carried by the same first request message, or may be carried by different first request messages.
Further, the attribute information corresponding to the user feedback information may include, but is not limited to, one or any combination of the following: the type, delay tolerance, transmission cycle, length and the like of the feedback information; in addition, the format of the first request message and the attribute information corresponding to the user feedback information may specifically be that: attribute information (such as the type, delay tolerance, sending period, length and the like of the feedback information) corresponding to the user feedback information is implicitly indicated by using different message formats.
In the embodiment of the present invention, the second base station may determine that the second base station needs to receive the user feedback information from the first base station or the second base station does not need to receive the user feedback information from the first base station based on the actual need of the second base station; when the second base station needs to receive the user feedback information, step 205 is executed; the second base station performs step 206 when it is not required to receive the user feedback information.
In a specific implementation manner, the first base station may forcibly send user feedback information corresponding to the second base station; when the second base station needs to receive the user feedback information, the second base station receives the user feedback information; and the second base station refuses to accept the user feedback information when the user feedback information does not need to be received.
And step 206, when the second base station does not need to receive the user feedback information, the first base station refuses to send the user feedback information corresponding to the second base station.
In the embodiment of the present invention, for the specific implementation manners of step 205 and step 206, based on different agreed manners, there may be the following cases:
in case one, when the second base station needs to receive user feedback information, the second base station sends a response message to the first base station; when the second base station does not need to receive the user feedback information, the second base station does not send a response message to the first base station, and the first base station does not default to send the user feedback information when not receiving the response message.
In this case, when the second base station needs to receive the user feedback information, the second base station sends a first response message used for indicating that the second base station needs to receive the user feedback information to the first base station; when receiving a first response message used for indicating that a second base station needs to receive user feedback information, the first base station sends the user feedback information corresponding to the second base station; receiving, by the second base station, the user feedback information.
When the second base station does not need to receive the user feedback information, the second base station does not send a first response message for indicating that the second base station needs to receive the user feedback information to the first base station; and when the first base station does not receive the first response message for indicating that the second base station needs to receive the user feedback information, the first base station refuses to send the user feedback information corresponding to the second base station.
In case two, when the second base station needs to receive the user feedback information, the second base station sends a response message to the first base station; and when the second base station does not need to receive the user feedback information, the second base station sends a response message to the first base station.
In this case, when the second base station needs to receive the user feedback information, the second base station sends a first response message used for indicating that the second base station needs to receive the user feedback information to the first base station; when receiving a first response message used for indicating that a second base station needs to receive user feedback information, the first base station sends the user feedback information corresponding to the second base station; receiving, by the second base station, the user feedback information.
When the second base station does not need to receive the user feedback information, the second base station sends a second response message for indicating that the second base station does not need to receive the user feedback information to the first base station; and when receiving a second response message which indicates that the second base station does not need to receive the user feedback information, the first base station refuses to send the user feedback information corresponding to the second base station.
In case III, when the second base station needs to receive the user feedback information, the second base station does not send a response message to the first base station, and the first base station defaults to send the user feedback information when not receiving the response message; and when the second base station does not need to receive the user feedback information, the second base station sends a response message to the first base station.
In this case, when the second base station needs to receive the user feedback information, the second base station does not send a second response message to the first base station, wherein the second response message is used for indicating that the second base station does not need to receive the user feedback information; when the first base station does not receive a second response message for indicating that the second base station does not need to receive the user feedback information, the first base station sends the user feedback information corresponding to the second base station; receiving, by the second base station, the user feedback information.
When the second base station does not need to receive the user feedback information, the second base station sends a second response message for indicating that the second base station does not need to receive the user feedback information to the first base station; and when receiving a second response message which indicates that the second base station does not need to receive the user feedback information, the first base station refuses to send the user feedback information corresponding to the second base station.
In case four, the second base station does not send a response message to the first base station when the second base station needs to receive the user feedback information or does not need to receive the user feedback information, the first base station defaults to send the user feedback information when the first base station does not receive the response message, and the second base station may receive the user feedback information or not.
In this case, the first base station cannot receive a first response message indicating that the second base station needs to receive the user feedback information or a second response message indicating that the second base station does not need to receive the user feedback information, and the first base station sends the user feedback information corresponding to the second base station; when the second base station needs to receive the user feedback information, the second base station receives the user feedback information; and the second base station refuses to receive the user feedback information when the user feedback information does not need to be received.
In the embodiment of the present invention, the first response message may include attribute information corresponding to the user feedback information; or, the format of the first response message may have a corresponding relationship with attribute information corresponding to the user feedback information; the attribute information corresponding to the user feedback information may include, but is not limited to, one or any combination of the following: the type, delay tolerance, transmission cycle, length and the like of the feedback information; the format of the first response message and the attribute information corresponding to the user feedback information have a corresponding relationship, which may specifically be: attribute information (such as the type, delay tolerance, sending period, length and the like of the feedback information) corresponding to the user feedback information is implicitly indicated by using different message formats.
In the embodiment of the present invention, the first base station sends the user feedback information corresponding to the second base station, and the second base station receives the user feedback information, which specifically includes but is not limited to the following modes:
in the first mode, the first base station sends the user feedback information corresponding to the second base station at one time, and the second base station receives the user feedback information sent by the first base station to the second base station at one time.
In the second mode, the first base station periodically sends the user feedback information corresponding to the second base station, and the second base station receives the user feedback information periodically sent to the second base station by the first base station.
In a third mode, the first base station continuously sends the user feedback information corresponding to the second base station, and the second base station receives the user feedback information continuously sent to the second base station by the first base station; the second base station sends a stop message for stopping sending the user feedback information to the first base station when the user feedback information does not need to be received, and the first base station may stop sending the user feedback information to the second base station after receiving the stop message for stopping sending the user feedback information.
In the embodiment of the present invention, after the second base station receives the user feedback information corresponding to the second base station from the first base station, the second base station may also schedule the user through the received downlink CSI information fed back by the user and/or the ACK/NACK information fed back by the user, that is, perform user scheduling by using the downlink CSI information and/or the ACK/NACK information and the information obtained by the second base station from the user; and/or the second base station may further determine a resource for aperiodic CSI feedback through the received triggering and/or configuration information for aperiodic CSI feedback by the user, and receive the aperiodic CSI information on the determined resource.
In summary, in the embodiments of the present invention, it can be ensured that all base stations participating in the cooperation can obtain complete and accurate user feedback information, so that the scheduling process of the base station for the user can be better supported, and the aperiodic CSI feedback of the cooperative base station can be supported.
Example two
An embodiment of the present invention provides a method for transmitting user feedback information, where the method may be applied in an application scenario where multiple base stations simultaneously and independently schedule a user, such as inter-eNodeB CoMP (e.g., multi-flow transmission scheme), and as shown in fig. 3, the method includes the following steps:
in step 301, the first base station determines that the first base station needs to receive user feedback information from the second base station. In an application scenario where multiple base stations simultaneously and independently schedule a user, a base station corresponding to a cell to which the user belongs is called a serving base station, and another (or multiple) base stations cooperating with the serving base station are called cooperative base stations; in practical application, the first base station may be a serving base station, and the second base station may be a cooperative base station; alternatively, the first base station may be a cooperative base station, and the second base station may be a serving base station; alternatively, the first base station may be a cooperative base station and the second base station may be a cooperative base station.
In the embodiment of the present invention, the user feedback information includes, but is not limited to, one or any combination of the following: downlink CSI information fed back by a user; ACK (positive acknowledgement)/NACK (negative acknowledgement) information fed back by the user; and triggering and/or configuring information and the like of aperiodic CSI feedback by the user.
In the embodiment of the present invention, the determining, by the first base station, that the first base station needs to receive the user feedback information from the second base station includes, but is not limited to, the following manners:
in the first mode, when the first base station determines that the uplink channel quality of the first base station is lower than the preset second threshold value by using RSRP information corresponding to the first base station (that is, the first base station determines that the uplink channel quality of the first base station is poor), it is determined that the first base station needs to receive user feedback information from the second base station.
In the second mode, when the first base station determines that the uplink channel quality of the first base station is lower than a preset third threshold value by using SRS (Sounding Reference Signal) information corresponding to the first base station (that is, the first base station determines that the uplink channel quality of the first base station is poor), it determines that the first base station needs to receive user feedback information from the second base station.
And thirdly, when the user feedback information is downlink CSI fed back by the user, if the first base station needs to obtain aperiodic CSI feedback information, determining that the first base station needs to receive the user feedback information (namely, the downlink CSI fed back by the user) from the second base station. The downlink CSI fed back by the user comprises aperiodic CSI feedback information, periodic CSI feedback information and the like.
In the embodiment of the present invention, the second request message may include attribute information corresponding to the user feedback information; or the format of the second request message has a corresponding relation with the attribute information corresponding to the user feedback information. For the above two cases, the attribute information corresponding to different user feedback information may be carried by the same second request message, or may be carried by different second request messages.
Further, the attribute information corresponding to the user feedback information may include, but is not limited to, one or any combination of the following: the type, delay tolerance, transmission cycle, length and the like of the feedback information; in addition, the format of the second request message and the attribute information corresponding to the user feedback information may specifically be that: attribute information (such as the type, delay tolerance, sending period, length and the like of the feedback information) corresponding to the user feedback information is implicitly indicated by using different message formats.
In step 303, the second base station receives a second request message from the first base station, and the second request message is used to indicate that the first base station needs to receive the user feedback information from the second base station.
In the embodiment of the invention, the second base station can determine that the second base station can provide the user feedback information of the first base station or the second base station cannot provide the user feedback information of the first base station based on the actual situation of the second base station; when the second base station allows transmitting the user feedback information to the first base station (i.e. the user feedback information of the first base station can be provided), step 305 is executed; the second base station performs step 306 when it is not allowed to send user feedback information to the first base station (i.e. it is not able to provide user feedback information of the first base station).
In the embodiment of the present invention, when the second base station allows sending the user feedback information to the first base station, the second base station may also send, to the first base station, a third response message used for indicating that the second base station can provide the user feedback information corresponding to the first base station; and receiving a third response message from the second base station by the first base station for indicating that the second base station can provide the user feedback information corresponding to the first base station.
In the embodiment of the present invention, the third response message may include attribute information corresponding to the user feedback information; or the format of the third response message may have a corresponding relationship with attribute information corresponding to the user feedback information; the attribute information corresponding to the user feedback information may include, but is not limited to, one or any combination of the following: the type, delay tolerance, transmission cycle, length and the like of the feedback information; the format of the third response message and the attribute information corresponding to the user feedback information have a corresponding relationship, which may specifically be: attribute information (such as the type, delay tolerance, sending period, length and the like of the feedback information) corresponding to the user feedback information is implicitly indicated by using different message formats.
In the embodiment of the present invention, the second base station sends the user feedback information corresponding to the first base station, and the first base station receives the user feedback information, which specifically includes but is not limited to the following modes:
in the first mode, the second base station sends the user feedback information corresponding to the first base station at one time, and the first base station receives the user feedback information sent by the second base station to the first base station at one time.
And in the second mode, the second base station periodically sends the user feedback information corresponding to the first base station, and the first base station receives the user feedback information periodically sent to the first base station by the second base station.
In the third mode, the second base station continuously sends the user feedback information corresponding to the first base station, and the first base station receives the user feedback information continuously sent to the first base station by the second base station; the first base station sends a stop message for stopping sending the user feedback information to the second base station when the user feedback information does not need to be received, and the second base station can stop sending the user feedback information to the first base station after receiving the stop message for stopping sending the user feedback information.
In the embodiment of the present invention, after the first base station receives the user feedback information corresponding to the first base station from the second base station, the first base station may also schedule the user through the received downlink CSI information fed back by the user and/or ACK/NACK information fed back by the user, that is, perform user scheduling by using the downlink CSI information and/or ACK/NACK information and information obtained by the first base station from the user; and/or the first base station may further determine a resource for aperiodic CSI feedback through the received triggering and/or configuration information for aperiodic CSI feedback by the user, and receive the aperiodic CSI information on the determined resource.
In the embodiment of the present invention, when the user feedback information is triggering and/or configuration information for a user to perform aperiodic CSI feedback, the second base station is a serving base station, and the first base station is a cooperative base station, a process of the second base station sending the user feedback information corresponding to the first base station specifically includes: when the second request message is used for indicating that the first base station needs to receive triggering and/or configuration information of aperiodic CSI feedback performed by a user from the second base station, if the second base station allows the triggering and/or configuration information of the aperiodic CSI feedback performed by the user to be sent to the first base station, the second base station triggers the feedback of the aperiodic CSI corresponding to the first base station first, and then sends the triggering and/or configuration information of the aperiodic CSI feedback performed by the user to the first base station.
In summary, in the embodiments of the present invention, it can be ensured that all base stations participating in the cooperation can obtain complete and accurate user feedback information, so that the scheduling process of the base station for the user can be better supported, and the aperiodic CSI feedback of the cooperative base station can be supported.
EXAMPLE III
In this embodiment, it is assumed that an edge user located between two base stations performs multi-flow transmission, and the two base stations (respectively, a first base station and a second base station) respectively schedule data transmission of the user by using the obtained information, and respectively receive SRS signals sent from the user.
The method includes the steps that a first base station (such as a cooperative base station) and a second base station (such as a serving base station) measure SRS signals sent from a user respectively, and if the strength of the SRS signal corresponding to the first base station measured by the first base station is lower than a certain threshold (namely a preset third threshold), the first base station determines that CSI information interaction is required to be performed (namely the first base station needs to receive user feedback information from the second base station, wherein the user feedback information is downlink CSI information fed back by the user corresponding to the first base station).
The first base station sends a second request message to the second base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station, and the second request message carries the needed user feedback information as attribute information corresponding to downlink CSI (channel state information) fed back by a user.
After receiving the second request message, the second base station measures the strength of the SRS signal to determine whether the second base station allows sending user feedback information (i.e., whether downlink CSI information that can provide reliable user feedback) to the first base station, and if the strength of the SRS signal is higher than a certain threshold, the second base station determines to allow sending user feedback information to the first base station, i.e., the second base station can provide the downlink CSI information fed back by the user.
Further, the second base station may send, to the first base station, downlink CSI information fed back by the user corresponding to the first base station in the following manner:
in the first mode, the second base station triggers aperiodic CSI feedback, so that a user feeds back aperiodic CSI (namely downlink CSI information fed back by the user) corresponding to the first base station, and the downlink CSI information fed back by the user is interacted with the first base station; when the second base station configures the reporting content of the aperiodic CSI feedback for the user, different aperiodic CSI trigger indications can trigger CSI information corresponding to different base stations.
And in the second mode, the second base station obtains the CSI information corresponding to the first base station (namely, downlink CSI information fed back by the user) from the periodic CSI report of the user, and interacts the downlink CSI information to the first base station.
And then, the first base station receives downlink CSI fed back by the interactive user, and carries out user scheduling according to the downlink CSI fed back by the user.
Example four
In this embodiment, it is assumed that an edge user located between two base stations performs multi-flow transmission, and the two base stations (respectively, a first base station and a second base station) respectively schedule data transmission of the user by using the obtained information, and respectively receive SRS signals sent from the user.
A first base station (e.g., a cooperative base station) and a second base station (e.g., a serving base station) measure SRS signals transmitted from a user, respectively, and if the SRS signal strength measured by the first base station corresponding to the first base station is lower than a certain threshold (i.e., a preset third threshold), the first base station determines that ACK/NACK information interaction is required (i.e., the first base station needs to receive user feedback information from the second base station, where the user feedback information is ACK/NACK information fed back by the user corresponding to the first base station).
The first base station sends a second request message to the second base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station, and the second request message carries the required user feedback information as attribute information corresponding to ACK/NACK information fed back by the user.
After receiving the second request message, the second base station judges whether the second base station allows sending user feedback information to the first base station or not (namely whether the ACK/NACK information corresponding to the first base station can be provided or not) according to the ACK/NACK information received by the second base station, wherein if the second base station can detect the complete ACK/NACK information corresponding to the first base station, the second base station determines to allow sending the user feedback information to the first base station, namely the second base station can provide the ACK/NACK information, and if the second base station can not detect the complete ACK/NACK information corresponding to the first base station, the second base station sends a rejection request and stops the interaction process.
Further, when the second base station allows to send the user feedback information to the first base station, the second base station sends ACK/NACK information corresponding to the first base station, and the first base station receives the ACK/NACK information and performs user scheduling according to the ACK/NACK information.
EXAMPLE five
In this embodiment, it is assumed that a user cooperation set includes two base stations (a first base station and a second base station, respectively), and the first base station (e.g., a cooperative base station) and the second base station (e.g., a serving base station) cooperate with each other through a non-ideal backhaul.
If the first base station needs to perform aperiodic CSI triggering (that is, the first base station needs to obtain aperiodic CSI feedback information), the first base station determines that interaction of the aperiodic CSI feedback information needs to be performed (that is, the first base station needs to receive user feedback information from the second base station, and the user feedback information is downlink CSI information fed back by a user corresponding to the first base station).
The first base station sends a second request message to the second base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station, and the second request message carries the needed user feedback information as attribute information corresponding to downlink CSI (channel state information) fed back by a user.
After the second base station receives the second request message, the second base station judges whether the second base station allows to send user feedback information to the first base station according to the current scheduling condition; if the aperiodic CSI trigger cannot be performed, the second base station sends a rejection notification (that is, a fourth response message for indicating that the second base station cannot provide the user feedback information corresponding to the first base station); and if the aperiodic CSI triggering can be carried out, the second base station triggers the feedback of the aperiodic CSI corresponding to the first base station.
Assuming that aperiodic CSI triggering can be performed, the second base station interacts relevant information (including resources used by aperiodic CSI feedback, triggered aperiodic CSI reporting content and the like) of aperiodic CSI feedback to the first base station; after receiving the interactive information, the first base station determines resources used by aperiodic CSI feedback and triggered contents according to the interactive information, and receives the aperiodic CSI feedback information at a corresponding position; and the first base station performs user scheduling according to the received aperiodic CSI and by combining the information received by the base station from the user.
EXAMPLE six
Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as a first base station, as shown in fig. 4, where the first base station includes:
a first determining module 11, configured to determine that the first base station needs to send user feedback information to the second base station;
a first sending module 12, configured to send a first request message to the second base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
a second sending module 13, configured to send, according to a situation that the second base station needs to receive user feedback information, user feedback information corresponding to the second base station.
The second sending module 13 is specifically configured to send the user feedback information corresponding to the second base station when receiving the first response message indicating that the second base station needs to receive the user feedback information or receiving no second response message indicating that the second base station does not need to receive the user feedback information.
The second sending module 13 is further configured to refuse to send the user feedback information corresponding to the second base station when the first response message indicating that the second base station needs to receive the user feedback information is not received or the second response message indicating that the second base station does not need to receive the user feedback information is received.
The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
EXAMPLE seven
Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as a second base station, as shown in fig. 5, where the second base station includes:
a first receiving module 21, configured to receive a first request message from a first base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
a second receiving module 22, configured to receive, when user feedback information needs to be received, user feedback information corresponding to the second base station from the first base station.
The base station device further includes a third sending module 23, configured to send, to the first base station, a first response message indicating that the second base station needs to receive the user feedback information when the user feedback information needs to be received; or, when the user feedback information does not need to be received, sending a second response message to the first base station, wherein the second response message is used for indicating that the second base station does not need to receive the user feedback information.
The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
Example eight
Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as a first base station, as shown in fig. 6, where the first base station includes:
a second determining module 31, configured to determine that the first base station needs to receive user feedback information from the second base station;
a fourth sending module 32, configured to send a second request message to the second base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a third receiving module 33, configured to receive, when the second base station allows sending user feedback information to the first base station, user feedback information corresponding to the first base station from the second base station.
The third receiving module 33 is further configured to receive a third response message from the second base station, where the third response message is used to indicate that the second base station can provide the user feedback information corresponding to the first base station; or receiving a fourth response message from the second base station, where the fourth response message is used to indicate that the second base station cannot provide the user feedback information corresponding to the first base station.
The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
Example nine
Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as a second base station, as shown in fig. 7, where the second base station includes:
a fourth receiving module 41, configured to receive a second request message from a first base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a fifth sending module 42, configured to send the user feedback information corresponding to the first base station when the user feedback information is allowed to be sent to the first base station.
The fifth sending module 42 is further configured to send, to the first base station, a third response message indicating that the second base station can provide the user feedback information corresponding to the first base station, when the user feedback information is allowed to be sent to the first base station; or, when the user feedback information is not allowed to be sent to the first base station, sending a fourth response message to the first base station, where the fourth response message is used to indicate that the second base station cannot provide the user feedback information corresponding to the first base station.
The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.
Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.
Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (34)
1.A method for transmitting user feedback information is characterized by comprising the following steps:
the method comprises the steps that a first base station determines that the first base station needs to send user feedback information to a second base station;
the first base station sends a first request message to the second base station, wherein the first request message is used for indicating that the first base station needs to send user feedback information to the second base station;
the first base station is according to the secondAnd under the condition that the base station needs to receive the user feedback information, sending the user feedback information corresponding to the second base station.
2.The method of claim 1, wherein the first base station determining that the first base station needs to send user feedback information to a second base station comprises:
when the first base station determines that the uplink channel quality of the second base station is lower than a preset first threshold value by using Reference Symbol Received Power (RSRP) information corresponding to the second base station, determining that the first base station needs to send user feedback information to the second base station; or,
when the user feedback information is downlink Channel State Information (CSI) information fed back by a user, if the first base station receives aperiodic CSI feedback information corresponding to the second base station, determining that the first base station needs to send the user feedback information to the second base station.
3.The method of claim 1, wherein the first base station sends the user feedback information corresponding to the second base station according to a condition that the second base station needs to receive the user feedback information, comprising:
and when receiving a first response message for indicating that the second base station needs to receive the user feedback information or not receiving a second response message for indicating that the second base station does not need to receive the user feedback information, the first base station sends the user feedback information corresponding to the second base station.
4.The method of claim 1, wherein after the first base station sends the first request message to the second base station, the method further comprises:
the first base station is not receiving the indication of the secondAnd when the second base station needs to receive a first response message of the user feedback information or receives a second response message for indicating that the second base station does not need to receive the user feedback information, refusing to send the user feedback information corresponding to the second base station.
5.The method of claim 1, wherein the first request message and/or the first response message include attribute information corresponding to user feedback information; or,
attribute information corresponding to user feedback information is implicitly indicated by using different message formats of the first request message and/or the first response message.
6.The method of claim 1 or 3, wherein the first base station sending the user feedback information corresponding to the second base station comprises:
the first base station sends the user feedback information corresponding to the second base station at one time; or,
the first base station periodically sends user feedback information corresponding to the second base station; or,
and the first base station continuously sends the user feedback information corresponding to the second base station until receiving a stop message of the second base station for stopping sending the user feedback information.
7.The method of any one of claims 1-5, wherein the user feedback information comprises one or any combination of: downlink CSI information fed back by a user; positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) information fed back by a user; and triggering and/or configuring information of aperiodic CSI feedback by the user.
8.A method for transmitting user feedback information is characterized by comprising the following steps:
a second base station receives a first request message from a first base station, wherein the first request message is used for indicating that the first base station needs to send user feedback information to the second base station;
and when the second base station needs to receive the user feedback information, receiving the user feedback information corresponding to the second base station from the first base station.
9.The method of claim 8, wherein the second base station, after receiving the first request message from the first base station, further comprises:
when the second base station needs to receive user feedback information, sending a first response message for indicating that the second base station needs to receive the user feedback information to the first base station; or,
and the second base station sends a second response message used for indicating that the second base station does not need to receive the user feedback information to the first base station when the second base station does not need to receive the user feedback information.
10.The method according to claim 9, wherein the first request message and/or the first response message includes attribute information corresponding to user feedback information; or,
attribute information corresponding to user feedback information is implicitly indicated by using different message formats of the first request message and/or the first response message.
11.The method of claim 9, wherein the second base station receiving user feedback information corresponding to the second base station from the first base station comprises:
the second base station receives user feedback information corresponding to the second base station, which is sent to the second base station by the first base station at one time; or,
the second base station receives user feedback information corresponding to the second base station, which is periodically sent to the second base station by the first base station; or,
and the second base station receives user feedback information corresponding to the second base station and continuously sent to the second base station by the first base station, and sends a stop message for stopping sending the user feedback information to the first base station when the user feedback information does not need to be received.
12.The method of any one of claims 8-11, wherein the user feedback information comprises one or any combination of: downlink Channel State Information (CSI) information fed back by a user; positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) information fed back by a user; and triggering and/or configuring information of aperiodic CSI feedback by the user.
13.The method of claim 12, wherein after the second base station receives the user feedback information corresponding to the second base station from the first base station, the method further comprises:
the second base station schedules the user through the received downlink CSI information fed back by the user and/or the ACK/NACK information fed back by the user; and/or the presence of a gas in the gas,
and the second base station determines the resource of the aperiodic CSI feedback through the received triggering and/or configuration information of the aperiodic CSI feedback performed by the user, and receives the aperiodic CSI information on the determined resource.
14.A method for transmitting user feedback information is characterized by comprising the following steps:
first base station determinationThe first base station needs to receive user feedback information from a second base station;
the first base station sends a second request message to the second base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station;
and when the second base station allows to send user feedback information to the first base station, the first base station receives the user feedback information corresponding to the first base station from the second base station.
15.The method of claim 14, wherein the first base station determining that the first base station needs to receive user feedback information from a second base station comprises:
when the first base station determines that the uplink channel quality of the first base station is lower than a preset second threshold value by using Reference Symbol Received Power (RSRP) information corresponding to the first base station, determining that the first base station needs to receive user feedback information from a second base station; or,
when the first base station determines that the uplink channel quality of the first base station is lower than a preset third threshold value by using the monitoring reference signal (SRS) information corresponding to the first base station, determining that the first base station needs to receive user feedback information from a second base station; or,
when the user feedback information is downlink Channel State Information (CSI) information fed back by a user, if the first base station needs to obtain aperiodic CSI feedback information, determining that the first base station needs to receive the user feedback information from the second base station.
16.The method of claim 14, wherein after the first base station sends the second request message to the second base station, further comprising:
the first base station receives the information fromA third response message of the second base station, indicating that the second base station can provide user feedback information corresponding to the first base station; or,
and the first base station receives a fourth response message from the second base station, wherein the fourth response message is used for indicating that the second base station cannot provide user feedback information corresponding to the first base station.
17.The method according to claim 16, wherein the second request message and/or the third response message includes attribute information corresponding to user feedback information; or,
implicitly indicating attribute information corresponding to user feedback information by using different message formats of the second request message and/or the third response message.
18.The method of claim 14, wherein the first base station receiving user feedback information corresponding to the first base station from the second base station comprises:
the first base station receives user feedback information corresponding to the first base station, which is sent to the first base station by the second base station at one time; or,
the first base station receives user feedback information corresponding to the first base station, which is periodically sent to the first base station by the second base station; or,
and the first base station receives user feedback information corresponding to the first base station and continuously sent to the first base station by the second base station, and sends a stop message for stopping sending the user feedback information to the second base station when the user feedback information does not need to be received.
19.The method of any one of claims 14-18,
the user feedback information comprises one or any combination of the following: downlink CSI information fed back by a user; positive Acknowledgement (ACK)/Negative Acknowledgement (NACK) information fed back by a user; and triggering and/or configuring information of aperiodic CSI feedback by the user.
20.The method of claim 19, wherein after the first base station receives the user feedback information corresponding to the first base station from the second base station, further comprising:
the first base station schedules the user through the received downlink CSI information fed back by the user and/or the ACK/NACK information fed back by the user; and/or the presence of a gas in the gas,
the first base station determines the resource of the aperiodic CSI feedback through the received triggering and/or configuration information of the aperiodic CSI feedback performed by the user, and receives the aperiodic CSI information on the determined resource.
21.A method for transmitting user feedback information is characterized by comprising the following steps:
a second base station receives a second request message from a first base station, wherein the second request message is used for indicating that the first base station needs to receive user feedback information from the second base station;
and the second base station sends the user feedback information corresponding to the first base station when the second base station allows the user feedback information to be sent to the first base station.
22.The method of claim 21, wherein the second base station, after receiving the second request message from the first base station, further comprises:
when the second base station allows to send user feedback information to the first base station, the second base station sends information to the first base station, wherein the information is used for indicating that the second base station can provide correspondence to the first base stationA third response message of the user feedback information; or,
and when not allowing to send the user feedback information to the first base station, the second base station sends a fourth response message to the first base station, wherein the fourth response message is used for indicating that the second base station cannot provide the user feedback information corresponding to the first base station.
23.The method according to claim 22, wherein the second request message and/or the third response message includes attribute information corresponding to user feedback information; or,
implicitly indicating attribute information corresponding to user feedback information by using different message formats of the second request message and/or the third response message.
24.The method of claim 21, wherein the second base station sending the user feedback information corresponding to the first base station comprises:
the second base station sends the user feedback information corresponding to the first base station at one time; or,
the second base station periodically sends user feedback information corresponding to the first base station; or,
and the second base station continuously sends the user feedback information corresponding to the first base station until receiving a stop message of the first base station for stopping sending the user feedback information.
25.The method of any one of claims 21-24, wherein the user feedback information comprises one or any combination of: downlink Channel State Information (CSI) information fed back by a user; ACK/NACK information for user feedback(ii) a And triggering and/or configuring information of aperiodic CSI feedback by the user.
26.A base station apparatus characterized in that, as a first base station, the first base station includes:
the first determining module is used for determining that the first base station needs to send user feedback information to the second base station;
a first sending module, configured to send a first request message to the second base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
and the second sending module is used for sending the user feedback information corresponding to the second base station according to the condition that the second base station needs to receive the user feedback information.
27.The base station apparatus of claim 26,
the second sending module is specifically configured to send the user feedback information corresponding to the second base station when receiving the first response message indicating that the second base station needs to receive the user feedback information or receiving no second response message indicating that the second base station does not need to receive the user feedback information.
28.The base station apparatus of claim 26,
the second sending module is further configured to refuse to send the user feedback information corresponding to the second base station when the first response message indicating that the second base station needs to receive the user feedback information is not received or the second response message indicating that the second base station does not need to receive the user feedback information is received.
29.Base station equipmentAs a second base station, the second base station includes:
a first receiving module, configured to receive a first request message from a first base station, where the first request message is used to indicate that the first base station needs to send user feedback information to the second base station;
and a second receiving module, configured to receive, when user feedback information needs to be received, user feedback information corresponding to the second base station from the first base station.
30.The base station apparatus of claim 29, further comprising:
a third sending module, configured to send, to the first base station, a first response message indicating that the second base station needs to receive user feedback information when the user feedback information needs to be received; or,
and when the user feedback information does not need to be received, sending a second response message for indicating that the second base station does not need to receive the user feedback information to the first base station.
31.A base station apparatus characterized in that, as a first base station, the first base station includes:
a second determining module, configured to determine that the first base station needs to receive user feedback information from the second base station;
a fourth sending module, configured to send a second request message to the second base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a third receiving module, configured to receive, when the second base station allows sending user feedback information to the first base station, user feedback information corresponding to the first base station from the second base station.
32.The base station apparatus of claim 31,
the third receiving module is further configured to receive a third response message from the second base station, where the third response message is used to indicate that the second base station can provide the user feedback information corresponding to the first base station; or receiving a fourth response message from the second base station, where the fourth response message is used to indicate that the second base station cannot provide the user feedback information corresponding to the first base station.
33.A base station apparatus characterized in that, as a second base station, the second base station comprises:
a fourth receiving module, configured to receive a second request message from a first base station, where the second request message is used to indicate that the first base station needs to receive user feedback information from the second base station;
a fifth sending module, configured to send, when it is allowed to send user feedback information to the first base station, user feedback information corresponding to the first base station.
34.The base station apparatus of claim 33,
the fifth sending module is further configured to send, to the first base station, a third response message indicating that the second base station can provide the user feedback information corresponding to the first base station, when the user feedback information is allowed to be sent to the first base station; or, when the user feedback information is not allowed to be sent to the first base station, sending a fourth response message to the first base station, where the fourth response message is used to indicate that the second base station cannot provide the user feedback information corresponding to the first base station.
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