JP6797164B2 - Spatial stream determination method, base station, and user equipment - Google Patents

Description

The present invention relates to the field of wireless communication technology, and particularly to spatial stream determination methods, base stations, and user equipment.

In the 3rd Generation Partnership Project Long Term Evolution (LTE for short) system, the user equipment bases the channel state information (CSI for short) acquired by the downlink channel. Feeding back to the station, the base station selects the appropriate communication data modulation and coding scheme, data transmission rate, and transmission subband for the user equipment according to the fed back channel state information. Multi-user, multi-input, multi-output (MU-MIMO for short) communication method was introduced in LTE R10, that is, a multi-antenna mechanism was introduced in user equipment, and multiple User devices communicate at the same time. In this mechanism, the number of antennas at the end of the evolved Node B (Evolved Node B, abbreviated as eNodeB) is relatively large. By introducing multiple antennas at the end of the user equipment, a single user equipment can establish multiple data streams on the eNodeB, which can result in higher spatial multiplexing gain.

In the prior art, the user equipment feeds back channel state report (Chanel State Report, abbreviated as CSR) information to the base station based on the code word granularity, that is, to the base station, the user equipment and the base station. Feeding back the overall channel quality information of the spatial stream contained in each code word for communication between, the base station is a downlink resource according to the overall channel quality state of the spatial stream within each code word. However, this method can cause improper spatial stream scheduling performed by the base station, which can lead to wasted system resources.

Embodiments of the present invention provide spatial stream determination methods, base stations, and user equipment to solve the problem that system resources are wasted by improper spatial stream scheduling.

A first aspect of the present invention provides a method for determining a spatial stream, including:
A step in which a base station sends a feedback mode instruction to a user device, which is used to instruct the user device to feed back channel status report (CSR) information based on packet particle size. And each packet size contains at least one spatial stream, with steps,
The step of receiving the CSR information of each packet granularity transmitted by the user equipment by the base station,
This includes the step of determining the spatial stream used by the base station to transmit data to the user equipment according to the CSR information of each packet granularity.

In the first possible implementation of the first aspect, the method is performed prior to the step of receiving the CSR information of each packet granularity transmitted by the user equipment by the base station.
The step of transmitting the configuration information to the user equipment by the base station, where the configuration information differs from the following parameters: the amount of spatial stream contained in each packet particle size, the time-frequency resources occupied by the CSR information, and so on. Includes further steps, including at least one of the packet-grained CSR information foodback method information.

With reference to the first possible implementation of the first aspect or the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Contains information about the mean channel quality and the difference between the channel quality and the mean for each spatial stream.

With reference to the first possible implementation of the first aspect or the first possible implementation of the first aspect, in the third possible implementation of the first aspect, the CSR information for each packet size is each spatial stream at each packet size. Includes channel quality information
After the step of receiving the CSR information of each packet granularity transmitted by the user equipment by the base station, this method
Depending on the base station, information about the average channel quality of the spatial stream at each packet granularity, and the difference between the channel quality and the average value of each spatial stream, according to the channel quality information of each spatial stream at each packet granularity. Includes additional steps to determine the information.

With reference to any one of the first to third possible implementations of the first aspect and the first to third possible implementations of the first aspect, the space included in each packet particle size in the fourth possible implementation of the first aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

A second aspect of the present invention provides a method for determining a spatial stream, including:
The step of receiving the feedback mode instruction transmitted by the base station by the user equipment, the feedback mode instruction instructs the user equipment to feed back channel status report (CSR) information based on the packet particle size. Used for, each packet grain size contains at least one spatial stream, with steps,
The step of measuring the channel quality information of each spatial stream by the user device and acquiring the CSR information of each packet granularity according to the channel quality information,
This includes a step of transmitting CSR information of each packet granularity to the base station by the user device according to the feedback mode instruction.

In the first possible implementation of the second aspect, the method is performed prior to the step of measuring the channel quality information of each spatial stream by the user equipment.
The step of receiving the configuration information transmitted by the base station by the user equipment, the configuration information is the time-frequency resource occupied by the following parameters, that is, the amount of spatial stream contained in each packet particle size, and the CSR information. , And further include steps, including at least one of the CSR feedback method information of different packet size.

With reference to the second possible implementation of the second aspect or the first possible implementation of the second aspect, in the second possible implementation of the second aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Information about the average value of the channel quality and information about the difference between the channel quality and the average value of each spatial stream is included, or the CSR information of each packet particle size is the channel quality of each spatial stream at each packet particle size. Contains information.

With reference to any one of the first to second possible implementations of the second aspect and the second aspect, the space included in each packet particle size in the third possible implementation of the second aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

A third aspect of the invention provides a base station that includes:
A first transmission module configured to send feedback mode instructions to the user device so that the feedback mode instructions feed back channel status report (CSR) information to the user device based on packet granularity. A first transmit module, which is used to indicate and each packet granularity contains at least one spatial stream,
A receiving module configured to receive CSR information for each packet granularity sent by the user device,
Includes a first decision module configured to determine the spatial stream used to transmit data to the user equipment according to the CSR information for each packet granularity.

In the first possible implementation of the third aspect, the base station transmits the configuration information to the user equipment before the receiving module receives the CSR information of each packet granularity transmitted by the user equipment. The configuration information further includes the transmission module of the following parameters: the amount of spatial stream contained in each packet granularity, the time-frequency resources occupied by the CSR information, and the feedback method information of the CSR information of different packet granularity, Includes at least one of.

With reference to the first possible implementation of the third aspect or the third aspect, in the second possible implementation of the third aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Contains information about the mean channel quality and the difference between the channel quality and the mean for each spatial stream.

With reference to the first possible implementation of the third aspect or the third aspect, in the third possible implementation of the third aspect, the base station further comprises a second determination module.
The CSR information for each packet granularity includes channel quality information for each spatial stream at each packet granularity.
The second decision module is information about the average channel quality of the spatial stream at each packet granularity after the receiving module receives the CSR information for each packet granularity transmitted by the user equipment, and each at each packet granularity. According to the channel quality information of the spatial stream, it is configured to determine the information about the difference between the channel quality of each spatial stream and the average value.

With reference to any one of the first to third possible implementations of the third aspect and the third aspect, the space included in each packet particle size in the fourth possible implementation of the third aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

A fourth aspect of the present invention provides a user device including:
A first receiving module configured to receive feedback mode instructions sent by a base station, where feedback mode instructions feed back channel status report (CSR) information to user equipment based on packet granularity. The first receiving module, which is used to instruct that each packet granularity contains at least one spatial stream,
A measurement module configured to measure channel quality information for each spatial stream and acquire CSR information for each packet granularity according to the channel quality information.
It includes a transmitting module configured to transmit the CSR information of each packet granularity to the base station according to the feedback mode instruction received by the receiving module.

In the first possible implementation of the fourth aspect, the user equipment is configured to receive the configuration information transmitted by the base station before the measurement module measures the channel quality information of each spatial stream. Further including a second receive module, the configuration information includes the following parameters: the amount of spatial stream contained in each packet granularity, the time-frequency resources occupied by the CSR information, and the feedback method of CSR information with different packet granularity. Contains at least one of the information.

With reference to the first possible implementation of the fourth aspect or the fourth aspect, in the second possible implementation of the fourth aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Information about the average value of the channel quality and information about the difference between the channel quality and the average value of each spatial stream is included, or the CSR information of each packet particle size is the channel quality of each spatial stream at each packet particle size. Contains information.

With reference to any one of the first to second possible implementations of the fourth aspect and the fourth aspect, the space included in each packet particle size in the third possible implementation of the fourth aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

A fifth aspect of the present invention provides a base station that includes:
A transmitter configured to send feedback mode instructions to a user device, because the feedback mode instructions direct the user device to feed back channel status report (CSR) information based on packet particle size. Used for transmitters, where each packet particle size contains at least one spatial stream,
A receiver configured to receive CSR information for each packet granularity transmitted by the user device,
Includes a processor configured to determine the spatial stream used to transmit data to the user equipment according to the CSR information for each packet granularity.

In the first possible implementation of the fifth aspect, the transmitter further causes the receiver to transmit configuration information to the user equipment before receiving the CSR information for each packet size transmitted by the user equipment. It is configured and the configuration information is at least one of the following parameters: the amount of spatial stream contained in each packet particle size, the time-frequency resources occupied by the CSR information, and the feedback method information of the CSR information of different packet size particles. Including one.

With reference to the first possible implementation of the fifth aspect or the fifth aspect, in the second possible implementation of the fifth aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Contains information about the mean channel quality and the difference between the channel quality and the mean for each spatial stream.

With reference to a fifth aspect or a first possible implementation of the fifth aspect, in a third possible implementation of the fifth aspect, the CSR information for each packet size is a spatial stream for each packet size. Includes channel quality information
After the receiver receives the CSR information of each packet granularity transmitted by the user equipment, the processor follows the channel quality information of each spatial stream at each packet granularity for the average value of the channel quality of the spatial stream at each packet granularity. It is further configured to determine the information and the information about the difference between the channel quality and the mean of each spatial stream.

With reference to any one of the first to third possible implementations of the fifth aspect and the fifth aspect, the space included in each packet particle size in the fourth possible implementation aspect of the fifth aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

A sixth aspect of the present invention provides a user device including:
A receiver configured to receive feedback mode instructions sent by the base station so that the feedback mode instructions feed back channel status report (CSR) information to the user equipment based on packet particle size. The receiver, which is used to indicate and each packet grain size contains at least one spatial stream,
A processor configured to measure channel quality information for each spatial stream and obtain CSR information for each packet granularity according to the channel quality information.
Includes a transmitter configured to transmit CSR information for each packet granularity to the base station according to the feedback mode instructions received by the receiver.

In the first possible implementation of the sixth aspect, the receiver is further configured and configured to receive the configuration information transmitted by the base station before the processor measures the channel quality information for each spatial stream. The information includes at least one of the following parameters: the amount of spatial stream contained in each packet size, the time-frequency resources occupied by the CSR information, and the feedback method information for the CSR information with different packet size. ..

With reference to the first possible implementation of the sixth aspect or the sixth aspect, in the second possible implementation of the sixth aspect, the CSR information for each packet size is that of the spatial stream at each packet size. Information about the average value of the channel quality and information about the difference between the channel quality and the average value of each spatial stream is included, or the CSR information of each packet particle size is the channel quality of each spatial stream at each packet particle size. Contains information.

With reference to any one of the first to second possible implementations of the sixth aspect and the sixth aspect, the space included in each packet particle size in the third possible implementation of the sixth aspect. The amount of streams is less than the amount of spatial streams contained in each codeword.

In the spatial stream determination method provided by the embodiments of the present invention, the base station sends a feedback mode instruction to the user equipment, and the feedback mode instruction is sent to the user equipment based on the packet granularity, Channel Status Report (CSR). Used to direct information to be fed back, each packet granularity contains at least one spatial stream, then receives the Channel Status Report (CSR) information for each packet granularity sent by the user equipment, and finally. In addition, the base station can determine the spatial stream used to transmit the data to the user equipment according to the CSR information of each packet granularity. The CSR information is more accurate because the user equipment uses at least one spatial stream as the packet granularity to report the CSR information, thereby transmitting data to the user by the base station. Improve the adequacy of choosing the spatial stream to be used and improve the utilization of system resources.

In order to more clearly explain the technical solutions in the embodiments of the present invention or in the prior art, the accompanying drawings required to describe the present invention or the prior art will be briefly described below. Of course, the accompanying drawings in the following description show some embodiments of the present invention, and those skilled in the art can further derive other drawings from these attached drawings without creative effort.

It is a flowchart of the space stream determination method by one Embodiment of this invention. It is a flowchart of the space stream determination method by another embodiment of this invention. It is a flowchart of the space stream determination method by still another Embodiment of this invention. It is a flowchart of the space stream determination method by still another Embodiment of this invention. It is a schematic structural drawing of the base station by one Embodiment of this invention. It is a schematic structural drawing of the base station by another embodiment of this invention. It is a schematic structure diagram of the base station according to still another embodiment of this invention. It is a schematic structural drawing of the user equipment by one Embodiment of this invention. It is a schematic structural drawing of the user equipment by another embodiment of this invention. It is a schematic structure diagram of the base station according to still another embodiment of this invention. It is a schematic structure diagram of the user equipment by still another embodiment of this invention.

In order to clarify the purpose, technical solution, and advantage of the embodiment of the present invention, the technical solution of the embodiment of the present invention is clarified below with reference to the accompanying drawings of the embodiment of the present invention. And fully explain. Of course, the embodiments described are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on embodiments of the invention without creative effort are within the scope of protection of the invention.

The techniques described herein include various communication systems, such as current 2G and 3G communication systems and next-generation communication systems, such as the Global System for Mobile communications (GSM). (Trademarks)), Code Division Multiple Access (CDMA for short) system, Time Division Multiple Access (TDMA for short) system, Wideband Code Division Multiple Access Wireless , WCDMA® system, Frequency Division Multiple Addressing (FDMA) system, Orthogonal Frequency-Division Multiple Access (OFDMA) system, single For single carrier FDMA (SC-FDMA) systems, General Packet Radio Service (GPRS) systems, Long Term Evolution (LTE) systems, and other communication systems. Can be applied.

The user equipment in the present specification may be a wireless user equipment or a wired user equipment. The wireless user device can be a device that provides voice and / or data connections to the user, a handheld device that has wireless communication capabilities, or another processing device that is connected to a wireless modem. A wireless user device can communicate with one or more core networks by using a radio access network (RAN for short). The wireless user device can be a mobile user device, such as a mobile phone (also referred to as a "cellular" phone) and a computer with the mobile user device, eg, exchanging voice and / or data with a radio access network. It can be portable, pocket-sized, handheld, computer built-in, or in-vehicle mobile device. For example, a Personal Communication Service (PCS) phone, a cordless phone set, a session establishment protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a personal digital assistant (Personal). It can be a device such as Digital Assistant, PDA for short. Wireless user devices are also systems, Subscriber Units, Subscriber Stations, Mobile Stations, Mobile Terminals, Remote Stations, Access Points, It may also be referred to as a remote user device (Remote Terminal), an access user device (Access Terminal), a user terminal (User Terminal), a user agent (User Agent), a user device (User Device), or a user device (User Equipment).

The base station in the present specification can be a base station in CDMA (Base Transceiver Station, abbreviated as BTS), a base station NodeB in WCDMA (registered trademark), or an advanced NodeB in LTE. (Evolutional Node B, abbreviated as eNB or eNodeB), which is not limited in the present invention, but for simplicity of description, Node B is used as an example for explanation in the following embodiments. ..

FIG. 1 is a flowchart of a spatial stream determination method according to an embodiment of the present invention. As shown in FIG. 1, the method in this embodiment can include:

Step 101: The base station sends a feedback mode instruction to the user equipment, which is used to instruct the user equipment to feed back channel status report (CSR) information based on packet particle size. Each packet size contains at least one spatial stream.

Specifically, the feedback mode instructions sent by the base station to the user equipment in the cell are based on the packet size, and each packet size contains at least one spatial stream, so that the user equipment is in the spatial stream. Channel information is fed back according to the packet particle size.

Step 102: The base station receives the CSR information of each packet granularity transmitted by the user equipment.

In one embodiment of the present invention, in particular, the CSR information for each packet particle size is information about the average value of the channel quality of the spatial stream at each packet particle size, and about the difference between the channel quality and the average value of each spatial stream. Includes information about. Upon obtaining the channel quality information for each spatial stream, the user equipment follows the channel quality information with information about the average channel quality of the spatial stream and information about the difference between the channel quality and average of each spatial stream. Can be generated and the information can be reported to the base station.

In another embodiment of the invention, the base station receives the CSR information transmitted by the user equipment, the CSR information includes the channel quality information of each spatial stream at each packet granularity, and the base station is calculated. According to the channel quality information of each spatial stream at each packet granularity, information about the average value of the channel quality of the spatial stream and information about the difference between the channel quality and the average value of each spatial stream can be obtained.

Optionally, before receiving the CSR information for each packet size transmitted by the user equipment, the base station can further transmit the configuration information to the user equipment, and the configuration information has the following parameters, that is, Includes at least one of the amount of spatial stream contained in each packet particle size, the time-frequency resource occupied by the CSR information, and the feedback method information of the CSR information of different packet particle sizes.

For example, if there are 20 spatial streams capable of transmitting data between the user equipment and the base station, and each packet granularity contains one spatial stream, the user equipment is the channel of each spatial stream. Collecting quality information, i.e. channel quality information of 20 spatial streams, then getting a set of CSR information according to the channel quality information by using one spatial stream as one group, i.e. 20 A set of CSR information is generated, and then 20 sets of CSR information are fed back to the base station. In this case, the base station receives 20 sets of CSR information. In particular, if each packet granularity contains two spatial streams, the user equipment also collects channel quality information for each spatial stream, i.e. channel quality information for 20 spatial streams, and then as a group. By using two spatial streams, we get a set of CSR information according to the channel quality information, i.e. generate 10 sets of CSR information, then feed back 10 sets of CSR information to the base station, in this case. The base station receives 10 sets of CSR information.

In addition, the amount of spatial stream contained in each packet particle size is configured by the base station according to the real-time situation of the channel. If the transmission rate of the channel is stable and the signal quality is relatively strong, the amount of spatial stream contained in each packet grain size can be as small as possible, that is, the CSR sent by the user to the base station. The information becomes more accurate, for example, if each packet grain size can contain one spatial stream, but the channel transmission rate is not stable and the signal quality is relatively weak, the spatial stream contained in each packet grain size. The amount of can be increased appropriately, for example, each packet granularity can include two spatial streams or three spatial streams. However, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword. Optionally, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword. The feedback method of CSR information of various packet granularity can be a periodic feedback method or an aperiodic feedback method, and can the periodic feedback method and the aperiodic feedback method report the overall bandwidth? , Or further includes selecting and reporting the best portion of bandwidth by the user equipment.

Step 103: The base station determines the spatial stream used to send the data to the user equipment according to the CSR information of each packet granularity.

Specifically, when receiving the CSR information transmitted by the user equipment, the base station informs about the average value of the channel quality of the spatial stream of each packet grain size, and the channel quality of each spatial stream and the average in the CSR information. By predicting the data transmission rate of the spatial stream contained in each packet granularity according to the information about the difference between the values, and then comprehensively considering the performance requirements of the system according to the predicted data transmission rate. For example, the balance between spatial streams for sending data to the user equipment, the performance weights of the spatial streams contained in each packet granularity are calculated, and as a result, the group of spatial streams with the best performance performs the data transmission. The spatial stream selected to do, i.e., the spatial stream with the maximum weight, is selected to carry out the data, or the spatial stream is also information about the average channel quality of the spatial stream at each packet granularity, and each spatial stream. Can be selected in a balanced manner according to information about the difference between the channel quality and the mean value of, resulting in improved utilization of spatial streams.

Optionally, the base station attempts to select a mutually orthogonal space stream according to the CSR information for each packet granularity.

For example, a cell has 10 user devices, and each user device establishes 20 spatial streams with eNodeB. In the present invention, the base station acquires the CSR information of a total of 200 spatial streams uploaded by the user equipment, and as a result, the base station transmits data according to the CSR information of all the spatial streams of each user equipment. Because of the high quality spatial stream can be selected, the orthogonality between the selected spatial streams is the highest, so the base station has 10 spatial streams with relatively good channel quality from the first user equipment. , And 5 spatial streams with relatively good channel quality can be selected from the second user equipment, as long as the channel quality is relatively good and the orthogonality between the two spatial streams is the highest. The resulting spatial streams can be separated from each other or adjacent to each other. Since the orthogonality between the selected spatial streams is the highest, it is relatively easy to eliminate the interlayer interference at the user equipment edge.

In the spatial stream determination method provided by this embodiment of the present invention, the base station sends a feedback mode instruction to the user equipment, and the feedback mode instruction is sent to the user equipment for a channel status report (CSR) based on packet granularity. ) Used to direct the information to be fed back, each packet granularity contains at least one spatial stream, then receives the CSR information for each packet granularity transmitted by the user equipment, and the base station has each According to the packet-grained CSR information, the spatial stream used to transmit the data to the user equipment can be determined. The CSR information is more accurate because the user equipment uses at least one spatial stream as the packet granularity to report the CSR information, thereby transmitting data to the user by the base station. Improve the adequacy of choosing the spatial stream to be used and further improve the utilization of system resources.

FIG. 2 is a flowchart of a spatial stream determination method according to another embodiment of the present invention. As shown in FIG. 2, the method in this embodiment can include:

Step 201: The user equipment receives the feedback mode instruction sent by the base station, and the feedback mode instruction directs the user equipment to feed back channel status report (CSR) information based on the packet particle size. Used, each packet size contains at least one spatial stream.

Specifically, the user equipment receives the feedback mode instruction transmitted by the base station, the user equipment feeds back the CSR information according to the feedback mode instruction, and each packet particle size includes at least one spatial stream.

Step 202: The user equipment measures the channel quality information of each spatial stream and acquires the CSR information of each packet granularity according to the channel quality information.

Optionally, before the user equipment measures the channel quality information for each spatial stream, the user equipment receives the configuration message sent by the base station, and the configuration message has the following parameters, i.e., each packet particle size. Includes at least one of the amount of spatial stream contained in, the time-frequency resources occupied by the CSR information, and the feedback method information for the CSR information with different packet size.

For example, if there are 20 spatial streams capable of transmitting data between the user equipment and the base station, and each packet granularity contains one spatial stream, the user equipment is the channel of each spatial stream. Collecting quality information, i.e. channel quality information of 20 spatial streams, then getting a set of CSR information according to the channel quality information by using one spatial stream as one group, i.e. 20 A set of CSR information is generated, and then 20 sets of CSR information are fed back to the base station. In this case, the base station receives 20 sets of CSR information. In particular, if each packet granularity contains two spatial streams, the user equipment also collects channel quality information for each spatial stream, i.e. channel quality information for 20 spatial streams, and then as a group. By using two spatial streams, we get a set of CSR information according to the channel quality information, i.e. generate 10 sets of CSR information, then feed back 10 sets of CSR information to the base station, in this case. The base station receives 10 sets of CSR information.

The amount of spatial stream contained in each packet particle size is configured by the base station according to the real-time situation of the channel. If the transmission rate of the channel is stable and the signal quality is relatively strong, the amount of spatial stream contained in each packet grain size can be as small as possible, that is, the CSR information transmitted to the base station More accurate, for example, if each packet grain size can contain one spatial stream, but the channel transmission rate is not stable and the signal quality is relatively weak, the amount of spatial stream contained in each packet grain size. Can be increased appropriately, for example, each packet granularity can include two spatial streams or three spatial streams. However, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

In one embodiment of the present invention, when the channel quality information of each spatial stream is measured according to the feedback mode instruction and the configuration information, the user equipment analyzes the channel quality information of each spatial stream and the channel of the spatial stream at each packet granularity. It gets information about the average quality and about the difference between the channel quality and the average of each spatial stream, and then sends that information to the base station as CSR information, resulting in the base station. Can directly determine the spatial stream used to send data to the user equipment according to that information.

In another embodiment of the present invention, when the channel quality information of each spatial stream is measured according to the feedback mode instruction and the configuration information, the user equipment transmits the channel quality information as CSR information to the base station, and as a result, the base station. Through analysis, according to the channel quality information, obtains information about the average channel quality of the spatial stream at each packet granularity, and information about the difference between the channel quality and the average value of each spatial stream, and then The base station informs the user equipment according to the information obtained through the analysis about the average value of the channel quality of the spatial stream at each packet granularity and the information about the difference between the channel quality and the average value of each spatial stream. , Determine the spatial stream used to send the data.

The feedback method of CSR information of various packet granularity can be a periodic feedback method or an aperiodic feedback method, and can the periodic feedback method and the aperiodic feedback method report the overall bandwidth? , Or further includes selecting and reporting the best portion of bandwidth by the user equipment.

Step 203: The user equipment transmits CSR information of each packet granularity to the base station according to the feedback mode instruction.

In one embodiment of the present invention, when the channel quality information of each spatial stream is measured according to the feedback mode instruction and the configuration information, the user equipment analyzes the channel quality information of each spatial stream and the channel of the spatial stream at each packet granularity. It obtains information about the average quality and information about the difference between the channel quality and the average of each spatial stream, and then sends that information to the base station as CSR information.

In another embodiment of the present invention, when the channel quality information of each spatial stream is measured according to the feedback mode instruction and the configuration information, the user equipment transmits the channel quality information as CSR information to the base station.

In the spatial stream determination method provided by this embodiment of the present invention, the user equipment receives the feedback mode instruction transmitted by the base station, and the feedback mode instruction gives the user equipment a channel state based on the packet granularity. Used to direct feedback of report (CSR) information, each packet granularity contains at least one spatial stream, and the user equipment then measures the channel quality information for each spatial stream and the channel quality information. The CSR information of each packet granularity is acquired according to the above, and finally, the CSR information of each packet granularity is transmitted to the base station according to the feedback mode instruction. The CSR information is more accurate because the user equipment uses at least one spatial stream as the packet granularity to report the CSR information, thereby transmitting data to the user by the base station. Improve the adequacy of choosing the spatial stream to be used and further improve the utilization of system resources.

FIG. 3 is a flowchart of a spatial stream determination method according to still another embodiment of the present invention. As shown in FIG. 3, this embodiment provides a particular bidirectional process between the base station and the user equipment, and the amount of spatial streams included in the packet particle size is one. The method includes:

Step 301: The base station transmits a feedback mode instruction based on packet particle size to the user equipment.

Specifically, the base station sends a feedback mode instruction based on the packet granularity to the user equipment in the cell, and instructs the user equipment to feed back channel status report (CSR) information in units of packet granularity. To do.

Step 302: The base station transmits the configuration information transmitted in the feedback mode to the user equipment.

Specifically, the base station transmits the configuration information in the feedback mode based on the packet particle size to the user equipment in the cell, and the configuration information is the amount of the spatial stream included in each packet particle size and the time occupied by the CSR information. -Includes feedback method information for frequency resources and CSR information with different packet sizes.

The amount of spatial stream contained in each packet particle size is one.

The feedback method of CSR information with different packet granularity can be a periodic feedback method or an aperiodic feedback method, and the periodic feedback method and the aperiodic feedback method can report the overall bandwidth. Or it further includes selecting and reporting the best portion of bandwidth by the user equipment.

Step 303: The user equipment feeds back the CSR information based on the packet particle size.

Specifically, when the user device measures the channel quality information of each spatial stream, the packet particle size is one spatial stream. Therefore, the user device uses the measured channel quality information of each spatial stream as CSR information as the base station. Send to.

Step 304a: The base station transmits scheduling information.

Specifically, the base station determines the spatial stream used to transmit data to the user equipment according to the CSR information of each spatial stream.

Upon receiving channel quality information for each spatial stream at each packet granularity transmitted by the user equipment, the base station predicts the data transmission rate for each spatial stream and then according to the predicted data transmission rate, the performance requirements of the system. By comprehensively considering, for example, the balance between spatial streams for sending data to the user equipment, the performance weights of the spatial streams are calculated, and as a result, the group of spatial streams with the best performance is The spatial stream selected to perform the data transmission, i.e., the spatial stream with the highest weight, is selected to perform the data transmission.

Optionally, the base station selects channels that are orthogonal to each other as much as possible in order to transmit data to the user according to the CSR information of each spatial stream.

Step 304b: The base station sends the data to the user.

Specifically, when a group of spatial streams that have the best performance for the user is selected, the base station uses these spatial streams to send data to the user.

In the spatial stream determination method provided by this embodiment of the present invention, the base station transmits to the user equipment a feedback mode instruction and configuration information based on the packet granularity transmitted in the feedback mode, and the user equipment feeds back. It receives mode instructions and configuration information, measures the channel quality information of each spatial stream, feeds the channel quality information back to the base station, and the base station is the best for data transmission according to the fed-back CSR information. Select a group of spatial streams that have performance. Since the packet granularity contains one spatial stream, the reported CSR information is more accurate, and thus the suitability of selecting the spatial stream used by the base station to send data to the user. Guarantee and fully use system resources.

FIG. 4 is a flowchart of a spatial stream determination method according to still another embodiment of the present invention. As shown in FIG. 4, this embodiment provides specific bidirectional processing between the base station and the user equipment, and the amount of spatial streams contained in the packet particle size is two or more, and each codeword. Less than the amount of spatial streams contained in. The method includes:

Step 401: The base station sends a feedback mode instruction based on packet particle size to the user equipment.

Specifically, the base station sends a feedback mode instruction based on the packet granularity to the user equipment in the cell, and instructs the user equipment to feed back channel status report (CSR) information in units of packet granularity. To do.

Step 402: The base station transmits the configuration information transmitted in the feedback mode to the user equipment.

Specifically, the base station transmits the configuration information in the feedback mode based on the packet particle size to the user equipment in the cell, and the configuration information is the amount of the spatial stream included in each packet particle size and the time occupied by the CSR information. -Includes feedback method information for frequency resources and CSR information with different packet sizes.

The amount of spatial stream contained in each packet particle size can be configured by the base station according to the real-time situation of the channel. If the transmission rate of the channel is stable and the signal quality is relatively strong, the amount of spatial stream contained in each packet grain size can be as small as possible, that is, the CSR information transmitted to the base station More accurate, for example, if each packet grain size can contain one spatial stream, but the channel transmission rate is not stable and the signal quality is relatively weak, the amount of spatial stream contained in each packet grain size. Can be increased appropriately, for example, each packet granularity can include two spatial streams or three spatial streams. However, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

In this embodiment, each packet particle size includes one spatial stream.

The feedback method of CSR information with different packet granularity can be a periodic feedback method or an aperiodic feedback method, and the periodic feedback method and the aperiodic feedback method can report the overall bandwidth. Or it further includes selecting and reporting the best portion of bandwidth by the user equipment. Step 403: The user equipment feeds back CSR information based on packet particle size.

Specifically, when the user equipment in the cell receives the packet granularity-based feedback mode instructions and configuration information transmitted by the base station, the user equipment first collects channel quality information for each spatial stream and then. Analyzes the channel quality information of each spatial stream according to the feedback mode instructions and configuration information, information about the average channel quality of the spatial stream at each packet granularity, and between the channel quality and average of each spatial stream. The information about the difference is acquired, and then the CSR information is sent to the base station, and the CSR information is the information about the average value of the channel quality of the spatial stream at each packet granularity, and the channel quality and average value of each spatial stream. Contains information about the differences between.

Optionally, when the user equipment in the cell receives feedback mode instructions and configuration information based on the packet granularity transmitted by the base station, the user equipment first collects channel quality information for each spatial stream. The channel quality information is then transmitted to the base station as CSR information, so that the base station, through analysis, according to the channel quality information, information about the average channel quality of the spatial stream at each packet granularity, and each spatial stream. The base station then obtains information about the difference between the channel quality and the average value of the packet, and then the base station obtains information about the average value of the channel quality of the spatial stream at each packet granularity, and each spatial stream. Determine the spatial stream used to send the data to the user equipment according to the information about the difference between the channel quality and the average value of.

Step 404a: The base station transmits scheduling information.

Specifically, upon receiving information about the average channel quality of the spatial stream at each packet granularity and the difference between the channel quality and the average value of each spatial stream transmitted by the user equipment, the base The station predicts the data transmission rate of the spatial stream contained in each packet granularity and then sends the data to the user equipment, for example, by comprehensively considering the performance requirements of the system according to the predicted data transmission rate. The balance between the spatial streams to do so, the performance weights of the spatial streams contained in each packet granularity are calculated, and as a result, the group of spatial streams with the best performance is selected to perform the data transmission, ie. , The spatial stream with the maximum weight is selected to perform the data transmission.

Optionally, if the CSR information uploaded by the user equipment and received by the base station contains channel quality information for each spatial stream at each packet granularity, the base station will optionally include channel quality for each spatial stream at each packet granularity. According to the information, information about the average value of the channel quality of the spatial stream and information about the difference between the channel quality and the average value of each spatial stream are obtained, and the data transmission rate of the spatial stream included in each packet granularity is calculated. By predicting and then comprehensively considering the performance requirements of the system according to the predicted data transmission rate, for example, the balance between spatial streams for sending data to the user equipment, included in each packet granularity. The performance weights of the spatial streams are calculated so that the group of spatial streams with the best performance is selected to perform the data transmission, i.e. the spatial stream with the highest weight is to perform the data transmission. Be selected.

Optionally, the base station selects channels that are orthogonal to each other as much as possible in order to transmit data to the user according to the CSR information of each spatial stream at each packet size.

Step 404b: The base station sends data to the user.

Specifically, when a group of spatial streams that have the best performance for the user is selected, the base station uses these spatial streams to send data to the user.

In the spatial stream determination method provided by this embodiment of the present invention, the base station transmits to the user equipment a feedback mode instruction and configuration information based on the packet granularity transmitted in the feedback mode, and the user equipment feeds back. It receives mode instructions and configuration information, feeds back the CSR information for each packet granularity, and finally the spatial stream used by the base station to send data to the user equipment according to the CSR information for each packet granularity. Can be decided. Since the amount of spatial stream contained in the packet granularity is less than the amount of spatial stream contained in the code word, the CSR information is more accurate, thereby allowing the base station to send data to the user. Improve the adequacy of choosing the spatial stream to be used and further improve the utilization of system resources.

FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 5, base station 100 includes a first transmit module 101, a receive module 102, and a first decision module 103.
The first transmit module 101 is configured to send feedback mode instructions to the user equipment, which instructs the user equipment to feed back channel status report (CSR) information based on packet particle size. Each packet particle size contains at least one spatial stream and is used to
The receiving module 102 is configured to receive CSR information of each packet granularity transmitted by the user equipment.
The first determination module 103 is used to determine the spatial stream used to send the data to the user equipment according to the CSR information of each packet granularity.

Further, as shown in FIG. 6, the base station is configured so that the receiving module 102 transmits the configuration information to the user equipment before receiving the CSR information of each packet granularity transmitted by the user equipment. Two transmit modules 104 can be further included and the configuration information includes the following parameters: the amount of spatial stream contained in each packet granularity, the time-frequency resources occupied by the CSR information, and the CSR information of different packet granularity. Includes at least one of the feedback method information.

Optionally, the CSR information for each packet granularity includes information about the average channel quality of the spatial stream at each packet granularity and information about the difference between the channel quality and the average value of each spatial stream.

In addition, as shown in FIG. 7, base station 100 can further include a second decision module 105.
The CSR information for each packet granularity includes channel quality information for each spatial stream at each packet granularity.
In the second determination module 105, after the receiving module 102 receives the CSR information of each packet granularity transmitted by the user equipment, the spatial stream of each packet granularity is according to the channel quality information of each spatial stream at each packet granularity. It is configured to determine information about the average channel quality and information about the difference between the channel quality and the average of each spatial stream.

Optionally, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

The base station provided by this embodiment of the present invention is a specific process for performing the spatial stream determination method provided by the first embodiment of the present invention, and for the base station to perform the spatial stream determination method. It is a device for, and the related description in the method embodiment of FIG. 1 can be referred to, the details of which are not described again herein.

FIG. 8 is a schematic structural diagram of a user device according to an embodiment of the present invention. As shown in FIG. 8, the user equipment 200 includes a first receiving module 201, a measuring module 202, and a transmitting module 203.
The first receiving module 201 is configured to receive the feedback mode instruction transmitted by the base station, and the feedback mode instruction feeds back the channel status report (CSR) information to the user equipment based on the packet particle size. Used to instruct that each packet size contains at least one spatial stream
The measurement module 202 is configured to measure the channel quality information of each spatial stream and acquire the CSR information of each packet granularity according to the channel quality information.
The transmission module 203 is configured to transmit the CSR information of each packet granularity to the base station according to the feedback mode instruction received by the first reception module 201.

Further, as shown in FIG. 9, the user equipment 200 is configured to receive the configuration information transmitted by the base station before the measurement module 202 measures the channel quality information of each spatial stream. The receive module 204 can further include the configuration information with the following parameters: the amount of spatial stream contained in each packet granularity, the time-frequency resources occupied by the CSR information, and the feedback of CSR information with different packet granularity. Includes at least one of the method information.

Optionally, does the CSR information for each packet particle size include information about the average channel quality of the spatial stream at each packet particle size and information about the difference between the channel quality and the average value of each spatial stream? , Or each packet granularity CSR information includes channel quality information for each spatial stream at each packet granularity.

Optionally, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

The user equipment provided by this embodiment of the present invention is for performing the spatial stream determination method provided by the second embodiment of the present invention, and specific processing for performing the spatial stream determination method by the user equipment. It is a device for, and the related description in the method embodiment of FIG. 2 can be referred to, the details of which are not described again herein.

FIG. 10 is a schematic structural diagram of a base station according to still another embodiment of the present invention. As shown in FIG. 10, base station 300 includes transmitter 301, receiver 302, and processor 303.
The transmitter 301 is configured to send feedback mode instructions to the user equipment, which directs the user equipment to feed back channel status report (CSR) information based on packet particle size. Used, each packet grain size contains at least one spatial stream
The receiver 302 is configured to receive CSR information of each packet granularity transmitted by the user equipment.
Processor 303 is configured to determine the spatial stream used to transmit data to the user equipment according to the CSR information for each packet granularity.

Optionally, the transmitter 301 is further configured to transmit the configuration information to the user equipment before the receiver 302 receives the CSR information of each packet granularity transmitted by the user equipment. Includes at least one of the parameters: the amount of spatial stream contained in each packet particle size, the time-frequency resources occupied by the CSR information, and the feedback method information for the CSR information in different packet particle sizes.

Optionally, the CSR information for each packet granularity includes information about the average channel quality of the spatial stream at each packet granularity and information about the difference between the channel quality and the average value of each spatial stream.

Optionally, the CSR information for each packet granularity includes channel quality information for each spatial stream at each packet granularity.

After the receiver 302 receives the CSR information of each packet granularity transmitted by the user equipment, the processor 303 follows the channel quality information of each spatial stream, and then the information about the average value of the channel quality of the spatial stream at each packet granularity, And further configured to determine information about the difference between the channel quality and average value of each spatial stream at each packet granularity.

Optionally, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

The base station provided by this embodiment of the present invention is a specific process for performing the spatial stream determination method provided by the first embodiment of the present invention, and for the base station to perform the spatial stream determination method. It is a device for, and the related description in the method embodiment of FIG. 1 can be referred to, the details of which are not described again herein.

FIG. 11 is a schematic structural diagram of a user device according to still another embodiment of the present invention. As shown in FIG. 11, the user equipment 400 includes a receiver 401, a processor 402, and a transmitter 403.
Receiver 401 is configured to receive feedback mode instructions transmitted by the base station, which instruct the user equipment to feed back channel status report (CSR) information based on packet particle size. Each packet grain size contains at least one spatial stream and is used to
Processor 402 is configured to measure channel quality information for each spatial stream and obtain CSR information for each packet size according to the channel quality information.
The transmitter 403 is configured to transmit the CSR information of each packet granularity to the base station according to the feedback mode instruction received by the receiver 401.

Optionally, receiver 401 is further configured to receive configuration information transmitted by the base station before processor 402 measures channel quality information for each spatial stream, which is configured with the following parameters: That is, it includes at least one of the amount of spatial streams contained in each packet size, the time-frequency resources occupied by the CSR information, and the feedback method information of the CSR information of different packet size.

Optionally, does the CSR information for each packet particle size include information about the average channel quality of the spatial stream at each packet particle size and information about the difference between the channel quality and the average value of each spatial stream? , Or each packet granularity CSR information includes channel quality information for each spatial stream at each packet granularity.

Optionally, the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

The user equipment provided by this embodiment of the present invention is for performing the spatial stream determination method provided by the second embodiment of the present invention, and specific processing for performing the spatial stream determination method by the user equipment. It is a device for, and the related description in the method embodiment of FIG. 2 can be referred to, the details of which are not described again herein.

Those skilled in the art will appreciate that all or part of the steps of this method embodiment can be accomplished by a program that directs the relevant hardware. The program may be stored on a computer-readable storage medium. When the program is executed, the steps of this method embodiment are executed. The storage media described above include any media that can store program code, such as ROM, RAM, magnetic disks, or optical disks.

Finally, it should be noted that the above embodiments are merely for explaining the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail by the above embodiments, further modifications to the technical solutions described in the above embodiments will be made without departing from the scope of the technical solutions of the embodiments of the present invention. Those skilled in the art should understand that can, or produce alternatives equivalent to some or all of its technical features.

100 base stations
101 First transmit module
102 Receive module
103 First decision module
104 Second transmit module
105 Second decision module
200 user equipment
201 First receiving module
202 measurement module
203 Transmission module
204 Second receiving module
300 base stations
301 transmitter
302 receiver
303 processor
400 user equipment
401 receiver
402 processor
403 transmitter

Claims (18)

Spatial stream determination method
The step of transmitting configuration information to a user device by a base station, wherein the configuration information includes packet granularity, the packet granularity is the amount of spatial stream used as a group , and the real-time status of the channel. The steps, which are composed of the base stations according to
A step of transmitting a feedback mode instruction to the user device by the base station so that the feedback mode instruction feeds back channel state report (CSR) information to the user device based on the packet particle size. Used to indicate that each packet particle size contains at least one spatial stream, with steps.
The step of receiving the CSR information of each packet granularity transmitted by the user device by the base station, and
A method comprising the step of determining a spatial stream used by the base station to transmit data to the user equipment according to the CSR information of each packet granularity. The first aspect of claim 1, wherein the configuration information further comprises at least one of the following parameters: a time-frequency resource occupied by the CSR information, and foodback method information of CSR information with different packet granularity. the method of. The CSR information of each packet granularity includes information about the average value of the channel quality of the spatial stream at each packet granularity and information about the difference between the channel quality and the average value of each spatial stream. The method described in 1 or 2. The CSR information for each packet granularity includes channel quality information for each spatial stream at each packet granularity.
After the step of receiving the CSR information of each packet granularity transmitted by the user equipment by the base station,
According to the channel quality information of each spatial stream at each packet granularity, the base station provides information about the mean channel quality of the spatial stream at each packet granularity, and between the channel quality and the mean of each spatial stream. The method of claim 1 or 2, further comprising determining information about the difference between the two. The method of any one of claims 1 to 4, wherein the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword. Spatial stream determination method
A step of receiving configuration information transmitted by a base station by a user device, wherein the configuration information includes packet granularity, the packet granularity being the amount of spatial stream used as a group , and a channel. The steps, which are composed of the base stations according to the real-time situation of
The step of receiving the feedback mode instruction transmitted by the base station by the user device, the feedback mode instruction feeds back channel state report (CSR) information to the user device based on the packet particle size. Used to instruct, each packet grain size contains at least one spatial stream, with steps.
The step of measuring the channel quality information of each spatial stream by the user device and acquiring the CSR information of each packet particle size according to the channel quality information.
A method having a step of transmitting the CSR information of each packet granularity to the base station by the user equipment according to the feedback mode instruction. The sixth aspect of claim 6, wherein the configuration information further includes at least one of the following parameters: a time-frequency resource occupied by the CSR information, and feedback method information of CSR information of different packet granularity. Method. The CSR information for each packet particle size contains or contains information about the average channel quality of the spatial stream at each packet particle size and the difference between the channel quality and the average value of each spatial stream. The method of claim 6 or 7, wherein the CSR information for each packet particle size includes channel quality information for each spatial stream at each packet particle size. The method of any one of claims 6-8, wherein the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword. It ’s a base station,
A transmitter configured to transmit configuration information to a user device and to transmit feedback mode instructions to the user device, wherein the configuration information includes a packet granularity and the packet granularity is one. The amount of spatial stream used as a group , configured by the base station according to the real-time status of the channel , the feedback mode instruction gives the user equipment channel status report (CSR) information based on the packet granularity. With a transmitter, which is used to direct feedback and each packet granularity contains at least one spatial stream,
A receiver configured to receive CSR information of each packet granularity transmitted by the user equipment, and
A base station with a processor configured to determine the spatial stream used to transmit data to the user equipment according to the CSR information of each packet granularity. The configuration information according to claim 10, further comprising at least one of the following parameters: time-frequency resources occupied by the CSR information, and feedback method information of CSR information of different packet granularity. base station. The CSR information of each packet granularity includes information about the average value of the channel quality of the spatial stream at each packet granularity and information about the difference between the channel quality and the average value of each spatial stream. The base station described in 10 or 11. The CSR information for each packet granularity includes channel quality information for each spatial stream at each packet granularity.
After the receiver receives the CSR information of each packet granularity transmitted by the user equipment, the processor follows the channel quality information of each spatial stream at each packet granularity, and the channel quality of the spatial stream at each packet granularity. The base station of claim 10 or 11, further configured to determine information about the mean value of, and information about the difference between said channel quality and said mean value of each spatial stream. The base station according to any one of claims 10 to 13, wherein the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword. It is a user device
A receiver configured to receive configuration information transmitted by a base station and to receive feedback mode instructions transmitted by the base station, wherein the configuration information includes packet granularity and is described above. The packet granularity is the amount of spatial stream used as a group , configured by the base station according to the real-time situation of the channel, and the feedback mode instruction is given to the user equipment, based on the packet granularity, the channel state. With a receiver, where each packet granularity contains at least one spatial stream, used to direct feedback of report (CSR) information.
A processor configured to measure channel quality information for each spatial stream and obtain CSR information for each packet size according to the channel quality information.
A user device including a transmitter configured to transmit the CSR information of each packet granularity to the base station according to the feedback mode instruction received by the receiver. The configuration information according to claim 15, further comprising at least one of the following parameters: a time-frequency resource occupied by the CSR information, and feedback method information for CSR information with different packet granularity. User device. The CSR information for each packet granularity contains information about the average channel quality of the spatial stream at each packet granularity and information about the difference between the channel quality and the average value of each spatial stream, or The user device according to claim 15 or 16, wherein the CSR information of each packet granularity includes channel quality information of each spatial stream at each packet granularity. The user device according to any one of claims 15 to 17, wherein the amount of spatial streams contained in each packet particle size is less than the amount of spatial streams contained in each codeword.

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