Method, system, base station and terminal for realizing space division multiplexingTechnical Field
The present invention relates to the field of mobile communications, and in particular, to a method, a system, a base station, and a terminal for implementing space division multiplexing.
Background
With the continuous development of mobile communication terminals, data application services of wireless communication are promoted to increase continuously, such as development and application of applications of cloud computing, video call, multimedia sharing, social contact and the like, so that users of wireless communication networks are increased in a large scale, and the wireless data services are increased explosively in a short period. According to research statistics, in the next 10 years, the wireless data service still has a 500-1000 times growth space, which puts a very high requirement on the capacity of a wireless communication system.
The methods for improving the capacity of the wireless network are commonly used at present: (1) increasing the bandwidth of the frequency spectrum; (2) enhancing service distribution; (3) the network density is improved; (4) and the frequency spectrum efficiency is improved. Among these methods, a method for improving spectral efficiency based on a multi-antenna technology has received much attention.
The multi-antenna technology evolves from multi-input and multi-output (SU-MIMO) of a single user end to multi-input and multi-output (MU-MIMO) of a multi-user end, and then develops into a coordinated multi-point transmission technology (CoMP), and the development idea is to improve the stability and peak flow of a single link and the overall flow of a system. However, in CoMP, due to resource overhead caused by channel measurement, data interaction, and the like, and imbalance of multipath power, performance is not ideal in practical application, and it is difficult to achieve an expected effect.
On this background, a communication technology based on massive antenna array (LSAS) or massive MIMO (massive MIMO) is proposed, which is an extension and extension of MIMO technology, and is basically characterized in that a large number of antenna arrays (from tens to thousands) are configured on the base station side, and multiple users are simultaneously served by using the Space Division Multiple Access (SDMA) principle. Due to the huge array gain and interference suppression gain brought by the large-scale antenna array, the total spectrum efficiency of the cell and the spectrum efficiency of edge users are greatly improved.
Although the large-scale antenna array system greatly improves the spectrum efficiency of a cell and the spectrum efficiency of edge users, in practical application, the problem of high pilot frequency overhead exists. In a time division duplex system, the problem of pilot overhead is not particularly obvious because the uplink and downlink links are mutually different and the channel can be estimated through a pilot signal sent by a base station, but in a frequency division duplex system or a time division duplex system (for example, a system working at a specific high frequency band) in which the uplink and downlink links are not mutually different, the downlink pilot overhead is in direct proportion to the number of antennas because the uplink and downlink links are not mutually different, and a terminal needs to feed back downlink channel state information to the base station, which also brings relatively large feedback overhead, thereby seriously affecting the performance of a large-scale antenna array system.
In addition, according to the prior art, it is assumed that a base station in a large-scale antenna array communication system includes 128 physical antennas, and each terminal includes one antenna, and in a system where uplink and downlink channels do not have mutual difference, the system needs to provide at least 128 subcarriers for the terminals to perform channel estimation, and generate a precoding matrixThe generated pilot overhead seriously affects the performance of the system, and in addition, a large number of antennas in the system make the terminal precoding matrix too complex.
Disclosure of Invention
In order to solve the technical problem, the invention discloses a method and a system for realizing space division multiplexing. The pilot frequency overhead of a large-scale antenna array can be reduced, and the complexity of a precoding matrix is reduced.
In order to achieve the purpose of the present application, the present invention provides a method for implementing space division multiplexing, including:
a base station sends a pilot signal of a first type antenna group to a terminal according to a first sending period;
generating a pilot signal of a second antenna group based on channel state feedback information which is sent by a terminal and used for receiving the pilot signal of the first antenna group;
and transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period.
Further, after transmitting the pilot signals of the second type antenna group to the terminal, the method further includes: and generating the pilot signal of the third antenna group based on the channel state feedback information sent by the terminal and used for receiving the pilot signal of the second antenna group, so as to provide the pilot signal for the terminal to demodulate the data channel.
Further, the method further comprises:
the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group.
Further, the first type antenna group is: a physical antenna actually configured; or,
a logical antenna generated after the physical antenna configured actually is virtualized;
the second antenna group comprises: the antenna comprises antennas which are generated by virtualizing all or part of antennas of the first antenna group.
Further, the channel state feedback information of the first antenna group includes: and the high-order statistical information of the channel between the terminal and the first antenna group.
Further, the base station sends the pilot signal related information of the first antenna group to the terminal, and the method further includes: and the terminal receives the pilot signals of the first antenna group based on the pilot signal related information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
Further, the base station sends the pilot signal correlation information of the second antenna group to the terminal, and the method further includes: and the terminal receives the pilot signal of the second antenna group based on the pilot signal related information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Further, the pilot signals sent by the first antenna group are: the base station transmits pilot signals of the first antenna group by adopting the same or different antennas in different first transmission periods;
the pilot signals sent by the second antenna group are: and the base station transmits the pilot signals of the second antenna group by adopting the same or different antennas in different second transmission periods.
Further, the terminal side includes N terminals, and the method further includes: receiving pilot signals of the first antenna group by M terminals in the N terminals; wherein M is less than or equal to N.
Further, the method further comprises: all or part of the N terminals share the channel state information of the first antenna group.
Further, the method further comprises: transmitting channel feedback information of the pilot signals of the first antenna group by X terminals in the M terminals by using the same resource; wherein X is less than or equal to M.
Further, the channel feedback information of the first antenna group is: and the information is generated by the channel state information of the first antenna group of all or part of the N terminals.
Further, M terminals receive the pilot signals corresponding to the first type antenna group, and the method further includes: and the Q terminals receive pilot signals corresponding to the first antenna groups of the other M-Q terminals.
Further, the terminal receives a pilot signal of the first antenna group to generate channel state information of the first antenna group, and the method further includes that the terminal receives channel state information of the first antenna group of other terminals.
In another aspect, the present application further provides a method for implementing space division multiplexing, including:
the terminal receives the pilot signal of the first antenna group according to a first receiving period and sends the channel state feedback information of the first antenna group to the base station;
and receiving the pilot signal of the second type antenna group generated by the base station according to a second receiving period with the period smaller than the first receiving period, and sending the channel state feedback information of the second type antenna group to the base station.
Further, the terminal receives the pilot signal generated by the base station to the antenna group of the third type, and the method further includes: and the terminal demodulates the data channel according to the pilot signal of the third antenna group.
Further, the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group.
Further, each antenna of the second antenna group is: generated by virtualization of all or part of the antennas of the first type of antenna group.
Further, the channel state feedback information of the first antenna group includes: and the high-order statistical information of the channel between the terminal and the first antenna group.
Further, the terminal receives the related information of the pilot signal of the first antenna group, and the method further includes: and the terminal receives the pilot signal of the first antenna group based on the pilot signal related information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
Further, the terminal receives the pilot signal correlation information of the second antenna group, and the method further includes: and the terminal receives the pilot signal of the second antenna group based on the pilot signal correlation information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Further, the terminal side includes N terminals, and the method further includes: m terminals in the N terminals receive pilot signals of the first antenna group; wherein M is less than or equal to N.
Further, the method further comprises: all or part of the N terminals share the channel state information of the first antenna group.
Further, X terminals in the M terminals send channel feedback information of the pilot signals of the first antenna group by using the same resource; wherein X is less than or equal to M.
Further, the channel feedback information of the first antenna group is: and the information is generated by the channel state information of the first antenna group of all or part of the N terminals.
Further, M terminals receive the pilot signals corresponding to the first type antenna group, and the method further includes: and Q terminals receive pilot signals corresponding to the first antenna group of other M-Q terminals.
Further, the terminal receives the pilot signal of the first type antenna group according to the first receiving period, and sends the channel state feedback information of the first type antenna group to other terminals.
Further, the terminal receives the pilot signal of the first antenna group to generate the channel state information of the first antenna group, and the method further includes that the terminal receives the channel state information of the first antenna group of other terminals.
In another aspect, the present application further provides a system for implementing space division multiplexing, including: a base station and a plurality of terminals; wherein,
the base station is used for sending the pilot signals of the first type antenna group to the terminal according to a first sending period; generating a pilot signal of a second antenna group according to the channel state feedback information of the first antenna group; transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period;
the terminal is used for receiving the pilot signal of the first antenna group and sending the channel state feedback information of the first antenna group to the base station; and receiving the pilot signals of the second antenna group.
Further, the base station is further configured to generate a pilot signal of the antenna group of the third type according to the channel state feedback information of the antenna group of the second type;
the terminal is also used for sending the channel state feedback information of the second antenna group to the base station; and receiving and demodulating the data channel according to the pilot signal of the third antenna group.
Further, the number of antennas of the second type of antenna group is smaller than the number of antennas of the first type of antenna group.
Further, the first type antenna group is: the antenna comprises a physical antenna which is actually configured or a logical antenna which is generated after the physical antenna which is actually configured is virtualized;
the second antenna group comprises: and the antennas are formed by virtualizing all or part of the antennas of the first antenna group.
Further, the channel state feedback information of the first antenna group includes: and the high-order statistical information of the channel between the terminal and the first antenna group.
Further, the base station is further configured to send pilot signal related information of the first antenna group to the terminal;
and the terminal is also used for receiving the pilot signals of the first antenna group based on the pilot signal correlation information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
Further, the base station is further configured to send pilot signal related information of the second antenna group to the terminal;
and the terminal is also used for receiving the pilot signals of the second antenna group based on the pilot signal correlation information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Further, the transmitting the pilot signal of the first antenna group includes: and the base station adopts the same or different antennas to send pilot signals corresponding to the first antenna group.
Further, transmitting the pilot signals of the first antenna group to the terminal includes: the base station transmits pilot signals of the first antenna group by adopting the same or different antennas in different first transmission periods;
sending a pilot signal of the second type antenna group; the method comprises the following steps: and the base station transmits the pilot signals corresponding to the first antenna group by adopting the same or different antennas in different transmission periods.
Furthermore, the terminal side comprises N terminals, and the base station determines that M of the N terminals receive the pilot signals of the first antenna group; wherein M is less than or equal to N.
Further, all or part of the N terminals share the channel state information of the first antenna group.
Further, the base station determines that X terminals in the M terminals use the same resource to send the channel feedback information of the pilot signal of the first antenna group; wherein X is less than or equal to M.
Further, the channel feedback information of the first antenna group is: and generating the channel state information of the first antenna group of all or part of the N terminals.
Further, the M terminals are further configured to receive, when receiving the pilot signal corresponding to the first antenna group, the pilot signals corresponding to the first antenna groups of the other M-Q terminals from the Q terminals.
Further, the terminal is further configured to receive channel state information of the first type antenna group of the other terminal.
In another aspect, the present application further provides a base station for implementing space division multiplexing, including: a sending module and a receiving module; wherein,
a sending module, configured to send a pilot signal of the first antenna group to a terminal according to a first sending period; transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period;
and the receiving module is used for receiving the channel state feedback information of the pilot signals of the first antenna group sent by the terminal.
Further, the receiving module is further configured to receive channel state feedback information of the second type antenna group, which is sent by the terminal and used for receiving the pilot signal of the second type antenna group;
and the pilot signal module is further used for generating a pilot signal of the antenna group of the third type according to the channel state feedback information of the antenna group of the second type.
Further, the number of antennas of the first type of antenna group is smaller than the number of antennas of the second type of antenna group.
Further, the base station further includes a virtualization module, configured to virtualize all or part of the antennas of the first type antenna group according to the determination unit, so as to generate at least one second type antenna group with an antenna number smaller than that of the first type antenna group.
Further, the channel state feedback information of the first antenna group includes: and the high-order statistical information of the channel between the terminal and the first antenna group.
Further, the sending module is further configured to send a pilot signal to the terminal based on the pilot signal correlation information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
Further, the sending module is further configured to send a pilot signal to the terminal based on the pilot signal correlation information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Further, the sending the pilot signal of the first antenna group specifically includes: the sending unit sends pilot signals corresponding to the first antenna group by adopting the same or different antennas;
the sending of the pilot signal of the second antenna group specifically includes: and the sending unit sends the pilot signals corresponding to the first antenna group by adopting the same or different antennas.
Furthermore, the terminal side comprises N terminals, and the base station further comprises a terminal determining module, configured to determine that M of the N terminals receive the pilot signals of the first antenna group;
a receiving unit, configured to receive channel feedback information of X terminals in the M terminals receiving the pilot signal of the first antenna group;
wherein M is less than or equal to N, and X is less than or equal to M.
Further, the receiving units of X terminals in the M terminals receive channel feedback information of the pilot signal of the first antenna group, which specifically includes: and receiving the channel feedback information of the pilot signals of the first antenna group by using the receiving units of X terminals in the M terminals with the same resource.
Further, the channel feedback information of the first antenna group is: and generating the channel state information of the first antenna group of all or part of the N terminals.
Further, the base station further includes a terminal receiving setting module, configured to set that the M terminals receive the pilot signals corresponding to the first antenna group, where Q terminals receive the pilot signals corresponding to the first antenna groups of other M-Q terminals.
In another aspect, the present application further provides a terminal for implementing space division multiplexing, including: a transmitting unit and a receiving unit; wherein,
a receiving unit, configured to receive a pilot signal of a first antenna group according to a first receiving period; receiving a pilot signal of a second antenna group sent by the base station according to a second receiving period with the period smaller than the first sending period;
the transmitting unit is used for transmitting the channel state feedback information of the first antenna group to the base station; and sending the channel state feedback information of the second antenna group to the base station.
Further, the sending unit is further configured to send channel state feedback information of the second type antenna group to the base station;
the receiving unit is also used for receiving the pilot signals generated by the base station to the third antenna group;
the terminal also comprises a data demodulation unit used for demodulating the data channel according to the pilot signal of the third antenna group of the receiving unit.
Further, the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group.
Further, each antenna of the second antenna group is generated by virtualizing all or part of the antennas of the first antenna group.
Further, the terminal also comprises a channel state acquisition unit, which is used for acquiring the channel state information; the channel state feedback information of the second antenna group is as follows: and when the pilot signal of the second antenna group is sent by the base station, the channel state information obtained by the channel state obtaining unit is generated.
Further, the channel state feedback information of the first antenna group includes: and the high-order statistical information of the channel between the terminal and the first antenna group.
Further, the channel state feedback information of the antenna group of the second type includes: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
Further, the terminal further includes a channel state sharing unit, configured to share the channel state information of the first antenna group acquired by the channel state acquiring unit.
Further, the receiving unit is further configured to receive information related to pilot signals of the first antenna group sent by the base station; receiving a first type antenna group pilot signal based on the first type antenna group pilot signal correlation information;
further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
Further, the receiving unit is further configured to receive information related to the pilot signal of the second type antenna group sent by the base station, and receive the pilot signal of the second type antenna group based on the information related to the pilot signal of the second type antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Furthermore, the terminal side comprises N terminals, and the base station determines receiving units of M terminals in the N terminals, for receiving the pilot signals of the first antenna group;
the receiving units of X terminals in the M terminals are used for receiving the pilot signals of the first antenna group; the sending unit is configured to send channel feedback information of the X terminals to the base station;
wherein M is less than or equal to N, and X is less than or equal to M.
Further, all or part of the N terminals share the channel state information of the respective first antenna group.
Further, sending channel feedback information of X terminals to the base station includes: and the sending unit sends the channel feedback information of the X terminals to the base station by adopting the same resource.
Further, the channel feedback information of the first antenna group is: and generating the channel state information of the first antenna group of all or part of the N terminals.
Further, the base station determines that the receiving units of M terminals receive the pilot signals corresponding to the first antenna group, where the receiving units of Q terminals receive the pilot signals corresponding to the first antenna groups of other M-Q terminals.
Further, the receiving module is further configured to receive channel state information of the first antenna group of the other terminal.
The application provides a technical scheme, including: a base station sends a pilot signal of a first type antenna group to a terminal according to a first sending period; channel state feedback information of the first antenna group is received based on pilot signals of the first antenna group sent by the terminal; generating a pilot signal of the second antenna group; and transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period. The application also comprises a terminal, a base station and a system corresponding to the method. The invention adopts the second sending period smaller than the first sending period to send the pilot signal, thereby realizing the reduction of the pilot overhead of space division multiplexing. And the realization complexity of the system is reduced by a virtualization method.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flow chart of a method for implementing space division multiplexing at a base station side according to the present invention;
fig. 2 is a flowchart of a method for implementing space division multiplexing on a terminal side according to the present invention;
FIG. 3 is a block diagram of a system for implementing space division multiplexing according to the present invention;
FIG. 4 is a block diagram of a base station for implementing space division multiplexing according to the present invention;
fig. 5 is a block diagram of a terminal structure for implementing space division multiplexing according to the present invention;
fig. 6 is a flowchart of embodiment 1 of implementing space division multiplexing at the base station side according to the present invention;
fig. 7 is a flowchart of embodiment 2 of implementing space division multiplexing at the base station side according to the present invention;
fig. 8 is a flowchart of embodiment 1 in which the terminal side implements space division multiplexing according to the present invention;
fig. 9 is a flowchart of embodiment 2 in which the terminal side implements space division multiplexing according to the present invention.
Detailed Description
In the present invention, "antenna" may also be understood as "port", and each antenna may be formed by one or more elements, for example, an element that transmits the same reference signal (pilot signal) or a physical antenna, or may be a logical antenna formed by multiple physical antennas through a virtualization technique. The same set of antennas may also be virtualized into multiple different antenna ports using different precoding.
Fig. 1 is a flowchart of a method for implementing space division multiplexing at a base station side according to the present invention, as shown in fig. 1, including:
step 100, the base station sends the pilot signal of the first type antenna group to the terminal according to the first sending period.
In this step, sending the pilot signal of the first antenna group is: and the base station transmits the pilot signals of the first antenna group by using the same or different antennas in different first transmission periods.
The base station sends the pilot signal related information of the first antenna group to the terminal, and the method of the invention also comprises the following steps: and the terminal receives the pilot signals of the first antenna group based on the pilot signal correlation information of the first antenna group. Here, generating the pilot signal related information of the first antenna group belongs to the conventional technical means of those skilled in the art, and is not described herein again.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
It should be noted that, the first type of antenna group of the present invention is: the antenna configuration unit may include a physical antenna actually configured, or a logical antenna generated by virtualizing the physical antenna actually configured. In the method of the present invention, the pilot frequency sending resource positions of the first type antenna group are: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
Step 101, generating a pilot signal of a second antenna group based on channel state feedback information sent by a terminal for receiving the pilot signal of the first antenna group.
In this step, the channel state feedback information of the first antenna group includes: and high-order statistical information of a channel between the terminal and the first antenna group.
In this step, generating the pilot signal belongs to the conventional technical means of those skilled in the art, and is not used to limit the protection scope of the present invention, and is not described herein again.
And step 102, sending the pilot signal of the second antenna group to the terminal according to a second sending period with the period smaller than the first sending period.
The base station sends the pilot signal related information of the second antenna group to the terminal, and the method of the invention also comprises the following steps: and the terminal receives the pilot signal of the second antenna group based on the pilot signal correlation information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
Transmitting the pilot signals of the second antenna group to: and the base station transmits the pilot signals of the second antenna group by using the same or different antennas in different second transmission periods.
It should be noted that, the pilot transmission resource positions of the second antenna group of the present invention are: selected from a set of predefined patterns, or generated from a random number.
It should be noted that the second sending period is designed in combination with an actual application scenario, and according to the pilot overhead, if the pilot overhead affects the performance of the large-scale antenna array system, the duration of the second sending period is reduced by increasing the sending density of the pilot signal of the second antenna group, so as to shorten the second sending period and achieve the purpose of reducing the pilot overhead.
After the pilot signals of the second antenna group are sent to the terminal, the method further includes generating the pilot signals of the third antenna group based on the channel state feedback information sent by the terminal and used for receiving the pilot signals of the second antenna group, so as to provide the pilot signals for the terminal to perform data channel demodulation.
It should be noted that, the channel state feedback information of the antenna group of the second type in the method of the present invention includes: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
The pilot signal sending positions of the third antenna group are as follows: selected from a set of predefined patterns, or generated from a random number.
The method of the invention also comprises the following steps: the number of the antennas of the second type of antenna group is less than that of the antennas of the first type of antenna group;
further, the second antenna group is: the antenna comprises antennas which are generated by virtualizing all or part of antennas of the first antenna group.
It should be noted that, as can be easily understood by the method of the present invention, the number of antennas passing through the second type of antenna group is smaller than or equal to the number of antennas passing through the third type of antenna group. The third antenna group comprises: and all or part of the antennas of the second antenna group are virtualized to generate the antenna. In addition, the number of the antennas of the second type of antenna group is smaller than that of the first type of antenna group, and the variation trend is the same as that of the first transmission period and the second transmission period for transmitting the pilot signals. That is, when the transmission cycle duration is shortened, the number of antennas in a general antenna group is also reduced to achieve the purpose of the present invention.
In the above steps, the random number is associated with the system parameter when generated according to the random number. Wherein, the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
The terminal side comprises N terminals, and the method of the invention further comprises the following steps: receiving pilot signals of the first antenna group by M terminals in the N terminals; wherein M is less than or equal to N.
The method of the invention also comprises the following steps: all or part of the N terminals share the channel state information of the first antenna group.
Further, the method of the invention also comprises the following steps: x terminals in the M terminals use the same resource to send channel feedback information of the pilot signal of the first antenna group; wherein X is less than or equal to M.
Further, the channel feedback information of the first antenna group is: and the information is generated by the channel state information of the first antenna group of all or part of the N terminals.
M terminals receive the pilot signals corresponding to the first antenna group, and the method of the present invention further comprises: and the Q terminals receive pilot signals corresponding to the first antenna groups of the other M-Q terminals.
The terminal receives the pilot signal of the first antenna group and generates the channel state information of the first antenna group.
Fig. 2 is a flowchart of a method for implementing space division multiplexing at a terminal side according to the present invention, as shown in fig. 2, including:
step 200, the terminal receives the pilot signal of the first antenna group according to the first receiving period, and sends the channel state feedback information of the first antenna group to the base station.
In this step, the channel state feedback information of the first antenna group includes: and high-order statistical information of a channel between the terminal and the first antenna group.
The channel state feedback information of the first antenna group is as follows: and the information is generated by the channel state information of the first antenna group of all or part of the N terminals. Here, the N terminals are the number of all terminals on the terminal side, and have corresponding values according to actual situations.
Step 201, receiving a pilot signal of the second type antenna group generated by the base station according to a second receiving period with a period smaller than the first receiving period, and sending channel state feedback information of the second type antenna group to the base station.
It should be noted that, in the method of the present invention, the channel state feedback information of the second type antenna group is: and when the terminal receives the pilot signal of the second antenna group sent by the base station, generating channel state feedback information of the second antenna group according to the obtained channel state information.
The channel state feedback information of the second antenna group comprises: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
After the channel state feedback information of the second antenna group is sent to the base station, the method of the invention further comprises the following steps: and the terminal receives the pilot signal generated by the base station and carries out data channel demodulation according to the pilot signal of the third type antenna group.
The pilot signal sending positions of the third antenna group are as follows: selected from a set of predefined patterns, or generated from a random number.
The terminal receives the pilot signal of the third antenna group generated by the base station, the method of the invention also includes: and the terminal demodulates the data channel according to the pilot signal of the third antenna group.
The method of the invention also comprises the following steps: the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group.
Further, each antenna of the second antenna group is: generated by virtualization of all or part of the antennas of the first type of antenna group.
It should be noted that, as can be easily understood by the method of the present invention, the relationship between the number of antennas in the third type of antenna group and the number of antennas in the second type of antenna group and the processing method thereof are provided, and the number of antennas in the third type of antenna group is less than or equal to that in the second type of antenna group. Each antenna of the third antenna group is generated by virtualizing all or part of the antennas of the second antenna group.
The terminal receives the relevant information of the pilot signal of the first antenna group, and the method of the invention also comprises the following steps: and receiving the pilot signals of the first antenna group based on the pilot signal correlation information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
It should be noted that, in the method of the present invention, the pilot transmission resource positions of the first type antenna group are: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
The terminal receives the related information of the pilot signal of the second antenna group, and the method of the invention also comprises the following steps: and receiving the pilot signal of the second antenna group based on the pilot signal correlation information of the second antenna group.
The pilot signal related information corresponding to the second type antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
It should be noted that, the pilot sending resource positions of the second antenna group in the method of the present invention are: selected from a set of predefined patterns, or generated from a random number.
The pilot frequency sending resource position is related to system parameters according to the random number in the random number generation; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
The terminal side comprises N terminals, and the method of the invention further comprises the following steps: m terminals in the N terminals receive pilot signals of the first antenna group; wherein M is less than or equal to N.
The method of the invention also comprises the following steps: and all or part of the N terminals share the channel state information of the first antenna group.
Further, X terminals in the M terminals send channel feedback information of the pilot signals of the first antenna group by using the same resource; wherein X is less than or equal to M.
Further, the channel feedback information of the first antenna group is: and the information is generated by the channel state information of the first antenna group of all or part of the N terminals.
The method of the present invention further includes that the M terminals receive the pilot signals corresponding to the first antenna group, and the method of the present invention further includes: and Q terminals receive pilot signals corresponding to the first antenna group of other M-Q terminals.
The terminal receives the pilot signal of the first antenna group and generates the channel state information of the first antenna group.
Fig. 3 is a block diagram of a system structure for implementing space division multiplexing according to the present invention, as shown in fig. 3, including: a base station and a plurality of terminals; wherein,
the base station is used for sending the pilot signals of the first type antenna group to the terminal according to a first sending period; generating a pilot signal of a second antenna group according to the channel state feedback information of the first antenna group; and transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period.
The transmitting the pilot signals of the first type antenna group comprises: and the base station transmits the pilot signals corresponding to the first antenna group by using the same or different antennas.
Sending a pilot signal of the second type antenna group; the method comprises the following steps: and the base station transmits the pilot signals corresponding to the first antenna group by using the same or different antennas.
The channel state feedback information of the first antenna group comprises: and high-order statistical information of a channel between the terminal and the first antenna group.
The terminal is used for receiving the pilot signal of the first antenna group and sending the channel state feedback information of the first antenna group to the base station; and receiving the pilot signals of the second antenna group.
The channel state feedback information of the second antenna group comprises: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
The base station is also used for sending the channel state feedback information of the second antenna group to the base station; and generating a pilot signal of the antenna group of the third type according to the channel state feedback information of the antenna group of the second type.
And the terminal is also used for receiving and demodulating the data channel according to the pilot signal of the third antenna group.
It should be noted that, the pilot signal transmission positions of the antenna group of the third type are: selected from a set of predefined patterns, or generated from a random number.
Further, the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group.
The first type antenna group is as follows: the antenna configuration unit may include a physical antenna actually configured, or a logical antenna generated by virtualizing the physical antenna actually configured.
The second antenna group comprises: and the antennas are formed by virtualizing all or part of the antennas of the first antenna group.
It should be noted that, the third type of antenna group may also be set and generated according to the method of the second type of antenna group, and the specific number of antennas of the second type of antenna group is less than or equal to the number of antennas of the third type of antenna group. The third antenna group comprises: and the third antenna group is generated by virtualizing all or part of the antennas of the second antenna group.
The base station sends the pilot signal related information of the first antenna group to the terminal;
and the terminal is also used for receiving the pilot signals of the first antenna group based on the pilot signal correlation information of the first antenna group.
Further, the information related to the pilot signals of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
It should be noted that, in the system of the present invention, the pilot transmission resource positions of the first type antenna group are: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
And the base station is also used for sending the pilot signal related information of the second antenna group to the terminal.
And the terminal is also used for receiving the pilot signals of the second antenna group based on the pilot signal correlation information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
It should be noted that, the pilot signal transmission positions of the second antenna group of the present invention are: selected from a set of predefined patterns, or generated from a random number.
The pilot signal transmitting position is generated according to a random number, wherein the random number is related to a system parameter; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
The terminal side comprises N terminals, and the base station determines M terminals in the N terminals and is used for receiving the pilot signals of the first antenna group; wherein M is less than or equal to N.
X terminals in the M terminals are used for sending the channel feedback information of the first antenna group to the base station; wherein X is less than or equal to M.
Further, all or part of the N terminals share the channel state information of the respective first antenna group.
Further, it is determined by the base station that X terminals out of the M terminals use the same resource to transmit the channel feedback information of the pilot signal of the first type antenna group.
The channel feedback information of the first antenna group is as follows: and generating the channel state information of the first antenna group of all or part of the N terminals.
And receiving pilot signals corresponding to the first antenna group by M terminals, wherein the Q terminals receive pilot signals corresponding to the first antenna groups of other M-Q terminals.
And the terminal is also used for receiving the channel state information of the first antenna group of other terminals.
Fig. 4 is a block diagram of a base station structure for implementing space division multiplexing according to the present invention, as shown in fig. 4, including: a transmitting module and a receiving module; wherein,
a sending module, configured to send a pilot signal of the first antenna group to a terminal according to a first sending period; and transmitting the pilot signal of the second antenna group to the terminal according to a second transmission period with the period smaller than the first transmission period.
The sending the pilot signal of the first type antenna group specifically includes: the sending module sends the pilot signals corresponding to the first antenna group to the terminal by using the same or different antennas.
Sending the pilot signal of the second antenna group, specifically including: the sending module sends the pilot signals corresponding to the first antenna group by using the same or different antennas.
And the receiving module is used for receiving the channel state feedback information of the pilot signals of the first antenna group sent by the terminal.
It should be noted that, the receiving module of the present invention is configured to receive channel state feedback information, which is sent by the terminal and used for receiving the pilot signal of the second antenna group.
The first type of antenna group comprises: the antenna configuration unit may include a physical antenna actually configured, or a logical antenna generated by virtualizing the physical antenna actually configured.
The number of antennas of the first type of antenna group is smaller than that of the second type of antenna group.
The base station further comprises a virtualization module, which is used for virtualizing all or part of the antennas of the first antenna group according to the antenna determination module so as to generate at least one second antenna group with the number of antennas smaller than that of the first antenna group.
It should be noted that, with the method of the present invention, it can be easily conceived that, through the virtualization module, the number of antennas in the second type of antenna group is less than or equal to the number of antennas in the third type of antenna group. And virtualizing all or part of the antennas of the second antenna group to generate a third antenna group with the number of antennas less than or equal to that of the second antenna group.
Further, the channel state feedback information of the first antenna group includes: and high-order statistical information of a channel between the terminal and the first antenna group.
The channel state feedback information of the second antenna group comprises: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
And the sending module is also used for sending the pilot signal to the terminal based on the pilot signal related information of the first antenna group.
The pilot signal related information of the first antenna group comprises: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
It should be noted that, the pilot transmission resource positions of the first type antenna group of the present invention are: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
And the sending module is further used for sending the pilot signal to the terminal based on the pilot signal related information of the second antenna group.
Further, the pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
It should be noted that, the pilot signal transmission positions of the second antenna group of the present invention are: selected from a set of predefined patterns, or generated from a random number. Wherein the random number is related to a system parameter in accordance with the random number generation; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
The base station also comprises a terminal determining module used for determining that M of the N terminals receive the pilot signals of the first antenna group;
the receiving unit is used for receiving channel feedback information of pilot signals of X terminals in the M terminals, wherein the pilot signals of the first antenna group are received by the X terminals;
wherein M is less than or equal to N, and X is less than or equal to M.
Receiving channel feedback information of pilot signals of a first antenna group of X terminals among the M terminals, specifically including: and the receiving unit receives the channel feedback information of X terminals in the M terminals, which receives the pilot signals of the first antenna group, by using the same resource.
The channel feedback information of the first antenna group is as follows: and generating the channel state information of the first antenna group of all or part of the N terminals.
The base station also comprises a terminal receiving setting module for setting that M terminals receive pilot signals corresponding to the first antenna group, wherein Q terminals receive pilot signals corresponding to the first antenna groups of other M-Q terminals.
Fig. 5 is a block diagram of a terminal structure for implementing space division multiplexing according to the present invention, as shown in fig. 5, including: a transmitting unit and a receiving unit; wherein,
a receiving unit, configured to receive a pilot signal of a first antenna group according to a first receiving period; and receiving the pilot signal of the second antenna group sent by the base station according to a second receiving period with the period smaller than the first sending period.
And the sending unit is used for sending the channel state feedback information of the first antenna group to the base station.
And the sending unit is also used for sending the channel state feedback information of the second antenna group to the base station.
And the receiving unit is also used for receiving the pilot signals generated by the base station to the antenna group of the third type.
The terminal of the invention also comprises a data demodulation unit which is used for demodulating the data channel according to the pilot signal of the third antenna group.
It should be noted that the number of antennas of the second type antenna group is smaller than that of the first type antenna group; each antenna of the second antenna group is generated by virtualizing all or part of the antennas of the first antenna group.
It should be noted that, as can be easily imagined by the method of the present invention, for the number of antennas of the third type of antenna group being less than or equal to that of the second type of antenna group, each antenna of the third type of antenna group can be generated by virtualizing all or part of the antennas of the second type of antenna group by using the method of the present invention.
The terminal of the invention also comprises a channel state acquisition unit used for acquiring the channel state information; the channel state feedback information of the second antenna group is as follows: and when the pilot signal of the second antenna group is sent by the base station, the channel state information obtained by the channel state obtaining unit is generated.
The channel state feedback information of the first antenna group comprises: and high-order statistical information of a channel between the terminal and the first antenna group.
The channel state feedback information of the second antenna group comprises: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
The terminal also comprises a channel state sharing unit which is used for sharing the channel state information of the first antenna group acquired by the channel state acquiring unit.
The receiving unit is also used for receiving the pilot signal related information of the first antenna group sent by the base station; receiving a first type antenna group pilot signal based on the first type antenna group pilot signal correlation information;
the pilot signal related information of the first antenna group comprises: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
It should be noted that, the pilot transmission resource positions of the first type antenna group of the present invention are: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
The pilot frequency sending resource positions of the second type antenna group are as follows: selected from a set of predefined patterns, or generated from a random number.
The pilot signal sending positions of the third antenna group are as follows: selected from a set of predefined patterns, or generated from a random number.
In the pilot frequency sending resource position, the random number is generated according to the random number, and the random number is related to the system parameter; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
And the receiving unit is further configured to receive the pilot signal correlation information of the second type antenna group sent by the base station, and receive the pilot signal of the second type antenna group based on the pilot signal correlation information of the second type antenna group.
The pilot signal related information corresponding to the second antenna group includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
The terminal side comprises N terminals, and the base station determines the receiving units of M terminals in the N terminals, and the receiving units are used for receiving the pilot signals of the first antenna group.
The receiving units of X terminals in the M terminals are used for receiving the pilot signals of the first antenna group; and the transmitting unit is used for transmitting the channel feedback information of the X terminals to the base station.
Wherein M is less than or equal to N, and X is less than or equal to M.
All or part of the N terminals share the channel state information of the first antenna group.
The sending unit, sending the channel feedback information of X terminals to the base station, comprises: and the sending unit is used for sending the channel feedback information of the X terminals to the base station by adopting the same resource.
The channel feedback information of the first antenna group is as follows: and generating the channel state information of the first antenna group of all or part of the N terminals.
The base station determines that receiving units of M terminals receive pilot signals corresponding to the first antenna group, wherein receiving units of Q terminals receive pilot signals corresponding to the first antenna groups of other M-Q terminals.
And the receiving module is further used for receiving the channel state information of the first antenna group of other terminals.
The process according to the invention is described in more detail below by means of specific examples on the base station side.
Example 1
Fig. 6 is a flowchart of embodiment 1 of implementing space division multiplexing at the base station side of the present invention, as shown in fig. 6, including:
step 600, the base station sends the pilot signal of the first type antenna group to the terminal according to the first sending period.
In this step, the first antenna group is: the antenna configuration unit may include a physical antenna actually configured, or a logical antenna generated by virtualizing the physical antenna actually configured.
Step 601, generating a pilot signal of the second antenna group based on channel state feedback information sent by the terminal for receiving the pilot signal of the first antenna group.
Step 602, according to a second sending period whose period is less than the first sending period, sending the pilot signal of the second antenna group to the terminal.
Step 603, based on the channel state feedback information sent by the terminal for receiving the pilot signal of the second type antenna group; and generating pilot signals of the antenna group of the third type to be provided for the terminal to demodulate the data channel.
Further, the terminal receives the relevant information of the pilot signal of the first antenna group; receiving pilot signals of the first antenna group based on the pilot signal related information of the first antenna group; after that time, the user can use the device,
further, the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group; the second antenna group comprises: and the antennas are formed by virtualizing all or part of the antennas of the first antenna group.
Similarly, the base station determines that the number of antennas of the second type of antenna group is less than or equal to the number of antennas of the third type of antenna group. The third antenna group comprises: the antennas are formed by performing virtualization generation on all or part of the antennas of the second antenna group; after that time, the user can use the device,
further, when the first type antenna group and the second type antenna group are virtualized,
the channel state feedback information of the first antenna group comprises: and high-order statistical information of a channel between the terminal and the first antenna group.
Example 2
Fig. 7 is a flowchart of embodiment 2 of implementing space division multiplexing at the base station side of the present invention, as shown in fig. 7, including:
step 700, the base station sends the pilot signal of the first type antenna group to the terminal according to the first sending period.
In this step, the first antenna group is: the antenna configuration unit may include a physical antenna actually configured, or a logical antenna generated by virtualizing the physical antenna actually configured.
Step 701, generating a pilot signal of a second antenna group based on channel state feedback information sent by a terminal for receiving the pilot signal of the first antenna group.
Step 702, according to a second sending period whose period is less than the first sending period, sending the pilot signal of the second antenna group to the terminal.
Step 703, the base station sends the information related to the pilot signal of the second antenna group to the terminal, and the terminal receives the pilot signal of the second antenna group based on the information related to the pilot signal of the second antenna group.
Further, the terminal receives the relevant information of the pilot signal of the first antenna group; receiving pilot signals of the first antenna group based on the pilot signal related information of the first antenna group; after that time, the user can use the device,
further, the number of antennas of the second type of antenna group is smaller than that of the first type of antenna group; the second antenna group comprises: and the antennas are formed by virtualizing all or part of the antennas of the first antenna group.
Similarly, the number of antennas in the second type of antenna group is less than or equal to the number of antennas in the third type of antenna group. The third antenna group comprises: the antennas are formed by performing virtualization generation on all or part of the antennas of the second antenna group; after that time, the user can use the device,
further, the channel state feedback information of the first antenna group includes: and high-order statistical information of a channel between the terminal and the first antenna group.
Example 3
The present embodiment is described in detail with reference to the determination of the base station side on the terminal receiving the pilot signal to better achieve the technical effects of the present invention.
After the base station of the embodiment 1 and the embodiment 2 transmits the pilot signals of the first antenna group,
the terminal side comprises N terminals, and M terminals in the N terminals receive pilot signals of the first antenna group; wherein M is less than or equal to N.
And receiving pilot signals corresponding to the first antenna group by the M terminals, wherein the Q terminals receive pilot signals corresponding to the first antenna groups of other M-Q terminals.
A base station receives channel feedback information of X terminals in M terminals, which receives pilot signals of a first antenna group; wherein X is less than or equal to M.
Further, X terminals in the M terminals use the same resource to receive the channel feedback information of the pilot signal of the first antenna group; after that time, the user can use the device,
further, the channel feedback information of the first antenna group is: information generated by the channel state information of the first antenna group of all or part of the N terminals; after that time, the user can use the device,
further, all or part of the N terminals share the channel state information of the respective first antenna group;
further, the terminal receives the channel state information of the first antenna group of other terminals.
After receiving the channel state feedback information of the first antenna group, the base station continues the subsequent steps of the method according to the embodiment 1 and the embodiment 2.
Example 4
In this embodiment, on the basis of embodiment 1 and embodiment 2, determination of the preferable scheme is performed with respect to step 600 and step 700.
In step 600 and step 700, further, the pilot signal related information of the first antenna group includes: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
The pilot frequency sending resource position of the first antenna group is as follows: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
The random number is related to a system parameter; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth.
Example 5
In this embodiment, on the basis of the combination of the embodiments 2 and 4 in embodiment 4, the determination of the preferred scheme is performed with respect to step 703.
That is, further, the pilot signal related information corresponding to the antenna group of the second type includes: the terminal identification and/or the terminal group identification and/or the antenna number information of the second type antenna group and/or the pilot pattern information of the second type antenna group and/or the pilot sending resource position of the second type antenna group and/or the pilot sending period of the second type antenna group and/or the pilot sequence information of the second type antenna group.
The base station sends the pilot signal correlation information of the second antenna group to the terminal, and the terminal receives the pilot signal of the second antenna group based on the pilot signal correlation information of the second antenna group;
the channel state feedback information of the second antenna group comprises: precoding matrix information, and/or channel quality information, and/or channel rank information, and/or correlation information of the second type antenna group.
The method of the present invention is further illustrated in detail by the specific examples on the terminal side.
Example 1
Fig. 8 is a flowchart of embodiment 1 in which the terminal side implements space division multiplexing according to the present invention, and as shown in fig. 8, the flowchart includes:
step 800, the terminal receives the pilot signal of the first antenna group according to the first receiving period, and sends the channel state feedback information of the first antenna group to the base station.
Step 801, receiving a pilot signal of a second type antenna group generated by a base station according to a second receiving period with a period smaller than a first transmitting period; and sending the channel state feedback information of the second antenna group to the base station.
Step 802, the terminal receives the pilot signal generated by the base station to the antenna group of the third type, and demodulates the data channel according to the pilot signal of the antenna group of the third type.
Further, in the above embodiment, the number of antennas in the second type of antenna group is smaller than that of the first type of antenna group; after that time, the user can use the device,
further, each antenna of the second antenna group is generated by virtualizing all or part of the antennas of the first antenna group.
Similarly, the number of antennas in the third type of antenna group is less than or equal to that in the second type of antenna group. Each antenna of the third antenna group is generated by virtualizing all or part of the antennas of the second antenna group.
Example 2
Fig. 9 is a flowchart of embodiment 2 in which the terminal side implements space division multiplexing according to the present invention;
step 900, the terminal receives the pilot signal related information of the first antenna group sent by the base station.
Step 901, the terminal receives the relevant information of the pilot signal of the first antenna group, and receives the pilot signal of the first antenna group according to the first receiving period based on the relevant information of the pilot signal of the first antenna group.
Step 902, the terminal receives the related information of the pilot signal of the second antenna group.
Step 903, the terminal receives a pilot signal of the second type antenna group generated by the base station according to a second receiving period with a period smaller than the first sending period based on the pilot signal related information of the second type antenna group; and sending the channel state feedback information of the second antenna group to the base station.
Step 904, the terminal receives the pilot signal generated by the base station to the antenna group of the third type, and demodulates the data channel according to the pilot signal of the antenna group of the third type.
Further, the channel state feedback information of the first antenna group includes: high-order statistical information of a channel between the terminal and the first antenna group; after that time, the user can use the device,
further, in the above embodiment, the number of antennas of the second type of antenna group determined by the base station is smaller than that of the first type of antenna group.
Similarly, the number of antennas in the third type of antenna group is less than or equal to that in the second type of antenna group.
Further, each antenna of the second antenna group is generated by virtualizing all or part of the antennas of the first antenna group.
Similarly, each antenna of the third type of antenna group is generated by virtualizing all or part of the antennas of the second type of antenna group.
Example 3
The present embodiment is a preferred embodiment of receiving and processing all or part of the pilot signal determined by the base station on the terminal side, and the detailed description will be given of the part.
The terminal side comprises N terminals, and M terminals in the N terminals receive pilot signals of the first antenna group;
receiving pilot signals of a first antenna group and sending channel feedback information to the base station by X terminals in the M terminals;
wherein M is less than or equal to N, and X is less than or equal to M.
And receiving pilot signals corresponding to the first antenna group by M terminals, wherein the Q terminals receive pilot signals corresponding to the first antenna groups of other M-Q terminals.
Further, all or part of the N terminals share the channel state information of the respective first antenna group; after that time, the user can use the device,
further, the channel feedback information of the first antenna group is: generating channel state information of a first antenna group of all or part of N terminals; after that time, the user can use the device,
further, the terminal receives channel state information of the first antenna group of other terminals; after that time, the user can use the device,
further, X terminals in the M terminals receive the pilot signals of the first antenna group, and send channel feedback information to the base station through the same resources.
Example 4
Based on embodiment 2, the positions of the pilot signal related information and the pilot signal related information transmission resource of the first antenna group are defined, so as to form this embodiment. The method specifically comprises the following steps:
the pilot signal related information of the first antenna group comprises: the method comprises the following steps of obtaining antenna number information of a first antenna group, and/or pilot pattern information of the first antenna group, and/or pilot transmission resource positions of the first antenna group, and/or pilot transmission periods of the first antenna group, and/or pilot sequence information of the first antenna group.
The pilot frequency sending resource positions of the first type antenna group are as follows: selected from a set of predefined patterns, or generated from random numbers, or preset by the system.
Further, the random number is related to a system parameter; the system parameters include: cell identification, frame identification, subframe identification and system bandwidth; after that time, the user can use the device,
although the embodiments disclosed in the present application are described above, the descriptions are only for the convenience of understanding the present application, and are not intended to limit the present application. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims.