CN106559164B - Method and apparatus for performing user information feedback in MMW network - Google Patents
Method and apparatus for performing user information feedback in MMW network Download PDFInfo
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- CN106559164B CN106559164B CN201510600183.5A CN201510600183A CN106559164B CN 106559164 B CN106559164 B CN 106559164B CN 201510600183 A CN201510600183 A CN 201510600183A CN 106559164 B CN106559164 B CN 106559164B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0417—Feedback systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
Abstract
The invention provides a method and a device for executing user information feedback in an MMW network. Wherein the MMW network includes an MMW base station for serving UEs, and the MMW base station has a massive antenna array and transmits to the UEs through transmission beams. The method comprises the following steps: the UE sends user information of the UE to the MMW base station, wherein the user information comprises at least one of the following items: a precoded CQI, a preferred beam index and an associated resource index, which are obtained by the UE based on a precoded reference signal from the MMW base station, and user status information, which respectively indicate a beam index of a preferred transmission beam that the UE can receive from the MMW base station and a time-frequency position of the preferred transmission beam, the user status information including at least one of a user resource utilization status, information of other linked UEs, and a receiver type of the UE.
Description
Technical Field
The present invention relates generally to the field of wireless communications, and more particularly, to a method and apparatus for performing user information feedback in an MMW network.
Background
In 4G wireless networks, flexible feedback schemes play a key role in supporting system operation in various transmission scenarios, such as single-cell multi-user transmission and multi-cell cooperative transmission. In 5G wireless networks, the Millimeter-Wave (MMW) band will be utilized to provide data rates in excess of gigabits per second (Gbps) under transmission scenarios such as low latency, Line of Sight (LOS), and Non-Line of Sight (NLOS).
Millimeter wave MMW refers to electromagnetic waves with frequencies in the range of 30GHz to 300GHz, and the wavelength of the electromagnetic waves is 1mm-10mm, so the millimeter wave MMW is called millimeter wave. The millimeter wave has the advantages of short wavelength, wide frequency band, strong anti-interference performance, good confidentiality, small equipment volume and the like, and can effectively solve a plurality of problems faced by high-speed broadband wireless access, thereby arousing wide attention. On the other hand, however, millimeter waves are absorbed by rain, air, and the like during propagation, and may cause serious propagation loss, and channel quality may rapidly deteriorate.
Due to the shorter wavelength of millimeter waves, a compact large-scale antenna array can be implemented and integrated with MMW systems to support transmission. This channel gain loss can be eliminated or compensated for by using antenna directivity. For example, a 64 element antenna array may produce a narrow beam with approximately 24-25dB gain. However, this scheme indicates that the high band communication system will be a beam-based communication system with a transmission mode different from that of the 4G network currently operating in a low frequency band (e.g., 2.6GHz or 3.5 GHz).
The beam-based solution brings more challenges to the feedback scheme of the MMC system. For example, how to support NLOS when the service link is blocked, how to further increase the data transmission rate with low latency requirements. The feedback scheme of the 4G system cannot meet these new high-band transmission scenario requirements, nor can it be directly extended and applied to a 5G high-band communication system. Therefore, a new feedback scheme should be designed for the 5G high band communication system.
Disclosure of Invention
Currently, there is no optimal user information feedback scheme capable of effectively supporting high-band transmission.
In view of the above problems, the present invention provides a method and apparatus for performing user information feedback in an MMW network. Wherein the MMW network includes an MMW base station for serving the UE, and the MMW base station has a massive antenna array and transmits to the UE through a transmission beam.
The method comprises the following steps: the UE sends user information of the UE to the MMW base station, wherein the user information comprises at least one of the following items: a precoded CQI, a preferred beam index and an associated resource index, which are obtained by the UE based on a precoded reference signal from the MMW base station, and user status information, which respectively indicate a beam index of a preferred transmission beam that the UE can receive from the MMW base station and a time-frequency position of the preferred transmission beam, the user status information including at least one of a user resource utilization status, information of other linked UEs, and a receiver type of the UE.
In one implementation, when the user information includes a precoded CQI, the method further comprises: the UE receives the precoded reference signal from the MMW base station, and the UE calculates the precoded CQI based on the precoded reference signal.
In one implementation, the MMW network further comprises a second MMW base station for serving the UE, and wherein when the user information comprises a preferred beam index and an associated resource index, the method further comprises: the UE sends a transmission beam index set preferred by the UE and an associated resource index set to the MMW base station in advance, and when a preferred beam is detected during a beam scanning period, the UE sends the beam index of the preferred beam and the resource position of the preferred beam in the beam scanning period to the MMW base station.
In one implementation, the MMW network further comprises a second MMW base station for serving the UE, and wherein when the user information comprises a preferred beam index and an associated resource index, the method further comprises: the UE sends a preferred beam index set and an associated resource index set used for communication between the UE and the second MMW base station to the second MMW base station in advance through a direct or indirect method, and when a preferred beam sent by the second MMW base station is detected during a beam scanning period, the UE sends the beam index of the preferred beam of the MMW base station and the second MMW base station and the resource position of the preferred beam in the beam scanning period to the MMW base station and the second MMW base station through a direct or indirect method.
In one implementation, when the user information includes the user status information and the user status information includes a receiver type of the UE, the method further comprises: the UE receives a data transmission from the MMW base station at a data rate corresponding to the receiver type.
In one implementation, when the user information includes the user status information and the user status information includes information of linked other UEs of the UE, the method further comprises: when a link between the MMW base station and the UE is blocked, the UE receives data transmissions from the MMW base station from other UEs of the link.
The apparatus is located in a UE, and includes: a transmitting unit configured to transmit user information of the UE to the MMW base station, the user information including at least one of: a precoded CQI, a preferred beam index and an associated resource index, which are obtained by the UE based on a precoded reference signal from the MMW base station, and user status information, which respectively indicate a beam index of a preferred transmission beam that the UE can receive from the MMW base station and a time-frequency position of the preferred transmission beam, the user status information including at least one of a user resource utilization status, information of other linked UEs, and a receiver type of the UE.
In one implementation, when the user information includes a precoded CQI, the apparatus further comprises: a receiving unit configured to receive the precoded reference signal from the MMW base station, and a calculating unit configured to calculate the precoded CQI based on the precoded reference signal.
In one implementation, the MMW network further comprises a second MMW base station for serving the UE, and wherein when the user information comprises a preferred beam index and an associated resource index, the transmitting unit is further configured to: and pre-sending the transmission beam index set preferred by the UE and the associated resource index set to the MMW base station, and sending the beam index of the preferred beam and the resource position of the preferred beam in the beam scanning period to the MMW base station when the preferred beam is detected during the beam scanning period.
In one implementation, the MMW network further comprises a second MMW base station for serving the UE, and wherein when the user information comprises a preferred beam index and an associated resource index, the transmitting unit is further configured to: and when the preferred beam sent by the second MMW base station is detected during a beam scanning period, sending the beam indexes of the preferred beams of the MMW base station and the second MMW base station and the resource positions of the preferred beams in the beam scanning period to the MMW base station and the second MMW base station in a direct or indirect mode.
In one implementation, when the user information includes the user status information and the user status information includes a receiver type of the UE, the apparatus further comprises: a receiving unit configured to receive a data transmission from the MMW base station at a data rate corresponding to the receiver type.
In one implementation, when the user information includes the user status information and the user status information includes information of other UEs linked to the UE, the apparatus further includes: a receiving unit configured to receive data transmissions from the MMW base station from other UEs of the link when the link between the MMW base station and the UE is blocked.
Drawings
The present invention will be better understood and other objects, details, features and advantages thereof will become more apparent from the following description of specific embodiments of the invention given with reference to the accompanying drawings. In the drawings:
FIG. 1 shows a schematic diagram of a single MMW cell transmission according to the present invention;
FIG. 2 shows a schematic diagram of an example of time domain beam selection corresponding to FIG. 1;
a schematic diagram of a subframe structure supporting fast beam selection is shown in fig. 3;
FIG. 4 shows a schematic diagram of multiple MMW cell transmissions in accordance with the present invention;
fig. 5(a) and 5(b) are diagrams illustrating multilink transmission supporting NLOS transmission according to the present invention;
fig. 6 shows a schematic diagram of a multilink transmission supporting user mobility according to the present invention;
FIG. 7 shows a schematic diagram of a low-latency continuous transmission employing multiple links for a given user;
fig. 8 shows a schematic diagram of a scenario supporting NLOS transmission according to the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
As mentioned before, for MMW networks in high frequency bands, due to the severe loss of millimeter wave transmission, more measurements should be performed on the User Equipment (UE) side and/or more information should be provided to the base station for transmission between the UE and the base station.
Compared to a relatively low band 4G network, according to the proposal of the invention, at least one of the following three aspects of user information provided by the UE to the base station is defined in the MMW network: a Channel Quality Indicator (CQI) information of precoding, an associated beam index and resource index preferred by the UE, and user status information of the UE.
Here, the suggested above user information may be periodically or non-periodically transmitted to the base station.
Hereinafter, these three aspects of information are described in detail, respectively.
Precoded CQI
The CQI information reflects channel quality and represents an optimal modulation and coding scheme capable of receiving downlink shared channel (DLSCH) transmission using a recommended Rank Indication (RI) and Precoding Matrix Indication (PMI) at a block error rate of at most 10%. CQI plays an important role in supporting scheduling and transmission of downlink channels in 4G radio access networks. In 4G networks, the UE acquires channel measurements according to the transmission mode to calculate CQI based on Common Reference Signals (CRS) or channel state information reference signals (CSI-RS) (see reference [1 ]).
The propagation loss in a 5G millimeter wave system (e.g., 28GHz band) is about 20dB higher than in a 4G network (see reference [2 ]). In this case, cell-edge users may not successfully detect CRS or CSI-RS for channel measurement to calculate CQI. In order to improve channel quality, transmission beams are used in millimeter wave communication.
To this end, according to a first aspect of the invention, the base station sends a precoded reference signal to the UE, which the UE is able to calculate a CQI based on, which is referred to as a precoded CQI.
Therefore, downlink channel-related scheduling and transmission can be achieved in the mmwave communication system by the CQI supporting such precoding.
Beam index and associated resource index
As described above, the 5G millimeter wave communication system is a beam-based network. To improve the link quality, the base station will scan its coverage area with different transmission beams. Preferably, the base station may perform time domain scanning, since such beams are cell-specific beams and are broadband beams.
To this end, according to a second aspect of the present invention, the UE transmits to the base station the UE preferred beam index and the associated resource index. The UE-preferred beam index indicates a beam index of a preferred beam that the UE can receive from a corresponding serving base station, and the resource index indicates a time-frequency location of the corresponding preferred beam.
In one implementation, a UE pre-transmits to a base station a set of transmission beam indices preferred by the UE and an associated set of resource indices (e.g., a set of slots, Resource Block (RB) indices, etc.). After receiving the UE-preferred transmission beam index set and the associated resource index set, the base station may transmit to the UE with the UE-preferred beam according to the beam index set and the resource index set (and possibly the information of other UEs).
Fig. 1 shows a schematic diagram of a single MMW cell transmission according to the present invention. Fig. 2 shows a schematic diagram of an example of time domain beam selection corresponding to fig. 1.
During the beam scanning period, a UE within the cell coverage will detect its preferred beam at the associated resource location.
For example, UE1 and UE2 shown in fig. 1 may detect their preferred beams at different time slots as shown in fig. 2. As shown in FIG. 2, assume that in one beam scanning period, the base station sequentially scans the cell coverage in N subframes (subframe i, subframe i +1, … …, subframe i + N-1) using N transmission beams (beam 0, beam 1, … …, beam N-1). UE1 detects its preferred beam at subframe i, while UE2 detects its preferred beam at subframe i + 2.
After detecting the preferred beam, UE1 and UE2 respectively transmit the beam index corresponding to the preferred beam and its resource location (e.g., relative slot location) within the scan period to the base station. The MMW base station may then perform resource allocation and start data transmission according to the UE's preferred beam and relative slot position.
In a preferred implementation, the optimal sub-frame may be used to support fast beam selection. A schematic diagram of a subframe structure supporting fast beam selection is shown in fig. 3. If the UE uses a fast decoder, the UE may detect its preferred beam in the downlink control region, e.g., based on the precoded RS, and feed back its selection in the corresponding uplink control region. In this case, beam selection may be achieved within a time period of one subframe.
On the other hand, for multi-cell deployment, the UE may also respectively feed back its preferred beam index and associated resource index to multiple base stations in a direct or indirect manner. Fig. 4 shows a schematic diagram of a multi-MMW cell transmission according to the present invention. Fig. 4 corresponds to a dense cell deployment case where one UE can detect multiple neighboring cells and the UE can connect to multiple MMW base stations (MMW base station 1, MMW base station 2, and MMW base station 3 as shown in fig. 4).
Similar to single-cell deployment, the UE may pre-send to each MMW base station, in a direct or indirect manner, a preferred set of beam indices and associated set of resource indices for communication between it and the MMW base station. So that each base station may transmit a respective preferred beam to the UE according to the respective set of beam indices and the associated set of resource indices.
In this case, when the UE detects a preferred beam transmitted by one or more base stations during a beam scanning period, it may transmit both a beam index of the detected preferred beam of each base station and a corresponding resource location to the respective base stations.
In this implementation, low delay transmission, mobile user transmission, NLOS transmission, and the like can be supported by feeding back information of a plurality of beam indexes and resource indexes to the base station. The transmission scenario is as follows.
Scene 1: multiple MMW base stations transmit the same data to the same UE in the same subframe. This can be used for cell edge users, mobile users and NLOS transmissions to enhance data rates.
Fig. 5(a) and 5(b) illustrate diagrams of multilink transmission supporting NLOS transmission according to the present invention, and fig. 6 illustrates a diagram of multilink transmission supporting user mobility according to the present invention.
In fig. 5(a), the link between the UE1 and the MMW base station 1 is broken or blocked at subframe i +1, while the link between the MMW base station 2, … …, the MMW base station K and the UE1 is normal. In fig. 5(b), the link between the UE1 and the MMW base station 1 and the MMW base station 2 is broken or blocked at subframe i +1, while the link between the MMW base station 3, … …, the MMW base station K and the UE1 is normal. It can be seen that at least one active link between the MMW base station and the UE1 can be used for continuous data transmission.
In fig. 6, at each transmission subframe of UE1, there is at least one active serving link between the set of MMW base stations and UE 1. Thus, there is an adaptive set of MMW base stations that can connect to the mobile subscriber to provide continuous data transmission.
Scene 2: multiple MMW base stations transmit different data streams to the same UE in the same subframe to further enhance the transmission data rate, which can be used for UEs with advanced receivers, such as those with a Serial Interference Cancellation (SIC) receiver based on antenna arrays.
Scene 3: multiple MMW base stations transmit different data to the same UE in different subframes to reduce the delay generated in the time domain due to beam scanning. Fig. 7 shows a schematic diagram of a low-latency continuous transmission employing multiple links for a given user.
User status information
In a 5G millimeter wave network, data rate reception exceeding Gbps is supported on the UE side, and a scenario of a large number of links is compulsorily supported. In this case, it is advantageous for the base station to know all or part of the user status information to optimize resource allocation and data transmission. Therefore, according to the third aspect of the present invention, the UE feeds back the user status information to the MMW base station. According to the present invention, the user status information may include one or more of a user resource utilization status, information of other UEs linked with the UE (such as ID and link status), and a receiver type of the UE.
In one implementation, when the UE feeds back the receiver type of the UE to the base station, the base station can transmit data to the UE at a data rate corresponding to the receiver type. For example, if the receiver of the UE1 is an antenna array-based SIC receiver, which means that the UE1 is able to receive data at a higher data rate, the base station may assign a multi-link transmission scheme to the UE1 to enhance the user's experience.
In another implementation, the UE feeds back information (e.g., IDs and link statuses of other linked UEs) of the UE (e.g., neighboring UEs of the UE) to the base station. In this case, when the link of the base station with the UE is blocked, the base station may transmit data to the UE through other UEs of the link of the UE, thereby supporting NLOS transmission. Fig. 8 shows a schematic diagram of a scenario supporting NLOS transmission according to the present invention.
As shown in fig. 8, for example, when the UE1 moves into the shadow of a tree and its LOS link with the MMW base station is blocked. Such blocking may be quickly detected, for example, using the frame structure shown in fig. 3. Since the UE1 has reported information (e.g., ID of UE2, shared resource index they negotiated with, and their link status, etc.) of other UEs (e.g., UE2) it detects that it is linked with, the base station may send data to the UE1 via the linked UE2 in the next subframe or other scheduled subframe. Further, the UE1 may report multiple neighboring linked UEs and their status to the base station so that the base station may utilize some or all of the linked UEs to assist the data transmission of the UE 1.
In addition, if the receiver type of the UE is an advanced receiver, such advanced receiver also facilitates the UE to decode multiple links from multiple linked UEs.
The present invention provides some solutions to implement user information feedback in 5G MMW networks to support high data rate transmission, low latency transmission, mobile subscriber data transmission, NLOS transmission, etc.
In one or more exemplary designs, the functions described herein may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. Such computer-readable media can comprise, for example, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to carry or store desired program code means in the form of instructions or data structures and which can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
The various illustrative logical blocks, modules, and circuits described in connection with the disclosure may be implemented or performed with a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The previous description of the disclosure is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the spirit or scope of the disclosure. Thus, the present invention is not intended to be limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Reference documents:
[1].3GPP,"Evolved universal terrestrial radio access(E-UTRA)；physicallayer procedures","3GPP,TS 36213,v12.5.0,2015.
[2].M.R.Akdeniz,Y.Liu,M.K.Samimi,S.Sun,S.Rangan,T.S.Rappaport,andE.Erkip,"Millimeter wave channel modeling and cellular capacity evaluation,"Selected Areas in Communications,IEEE Journal on,vol.32,pp.1164-1179,June2014.
Claims (10)
1. a method for performing user information feedback in a mmwave MMW network, wherein the MMW network includes a MMW base station for serving a user equipment, UE, and the MMW base station has a large-scale antenna array and transmits to the UE through a transmission beam, the method comprising:
the UE sends user information of the UE to the MMW base station, wherein the user information comprises: a precoded channel quality indication CQI, a preferred beam index and associated resource index and user state information,
wherein the precoded CQI is obtained by the UE based on a precoded reference signal from the MMW base station,
the preferred beam index and associated resource index respectively indicate a beam index of a preferred transmission beam that the UE is capable of receiving from the MMW base station and a time-frequency location of the preferred transmission beam,
the user status information includes at least one of a user resource utilization status, information of other UEs linked and a receiver type of the UE,
the method further comprises the following steps: the UE sends a transmission beam index set and an associated resource index set preferred by the UE to the MMW base station in advance, and
when detecting a preferred beam during a beam scanning period, the UE transmits a beam index of the preferred beam and its resource location within the beam scanning period to the MMW base station.
2. The method of claim 1, further comprising:
the UE receives the precoded reference signal from the MMW base station, an
The UE calculates the precoded CQI based on the precoded reference signal.
3. The method of claim 1, wherein the MMW network further comprises a second MMW base station for serving the UE, and the method further comprises:
the UE pre-transmits to the second MMW base station, directly or indirectly, a preferred set of beam indices and an associated set of resource indices for communication between the UE and the second MMW base station, and
when detecting the preferred beam sent by the second MMW base station during the beam scanning period, the UE sends the beam indexes of the preferred beams of the MMW base station and the second MMW base station and the resource positions of the preferred beams in the beam scanning period to the MMW base station and the second MMW base station in a direct or indirect mode.
4. The method of claim 1, wherein when the user status information includes a receiver type of the UE, the method further comprises:
the UE receives a data transmission from the MMW base station at a data rate corresponding to the receiver type.
5. The method of claim 1, wherein when the user status information includes information of other UEs linked to the UE, the method further comprises:
when a link between the MMW base station and the UE is blocked, the UE receives data transmissions from the MMW base station from other UEs of the link.
6. An apparatus for performing user information feedback in a MMW network, wherein the MMW network includes a MMW base station for serving a user equipment, UE, and the MMW base station has a massive antenna array and transmits to the UE through a transmission beam, the apparatus being located in the UE, comprising:
a transmitting unit configured to transmit user information of the UE to the MMW base station, the user information including: a precoded CQI, a preferred beam index and associated resource index and user state information,
wherein the precoded CQI is obtained by the UE based on a precoded reference signal from the MMW base station,
the preferred beam index and associated resource index respectively indicate a beam index of a preferred transmission beam that the UE is capable of receiving from the MMW base station and a time-frequency location of the preferred transmission beam,
the user status information includes at least one of a user resource utilization status, information of other UEs linked and a receiver type of the UE,
and the transmitting unit is further configured to:
pre-sending the UE-preferred transmission beam index set and the associated resource index set to the MMW base station, and
when a preferred beam is detected during a beam scanning period, transmitting a beam index of the preferred beam and its resource location within the beam scanning period to the MMW base station.
7. The apparatus of claim 6, further comprising:
a receiving unit configured to receive the precoded reference signal from the MMW base station, an
A calculation unit configured to calculate the precoded CQI based on the precoded reference signal.
8. The apparatus of claim 6, wherein the MMW network further comprises a second MMW base station for serving the UE, and the transmitting unit is further configured to:
pre-sending a preferred set of beam indices and an associated set of resource indices for communication between the UE and the second MMW base station to the second MMW base station, either directly or indirectly, and
and when detecting a preferred beam sent by the second MMW base station during a beam scanning period, sending the beam indexes of the preferred beams of the MMW base station and the second MMW base station and the resource positions of the preferred beams of the MMW base station and the second MMW base station in the beam scanning period to the MMW base station and the second MMW base station in a direct or indirect mode.
9. The apparatus of claim 6, wherein when the user status information comprises a receiver type of the UE, the apparatus further comprises:
a receiving unit configured to receive a data transmission from the MMW base station at a data rate corresponding to the receiver type.
10. The apparatus of claim 6, wherein when the user status information comprises information of other UEs linked to the UE, the apparatus further comprises:
a receiving unit configured to receive data transmissions from the MMW base station from other UEs of the link when the link between the MMW base station and the UE is blocked.
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-
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Non-Patent Citations (2)
| Title |
|---|
| 3D-MIMO Feedback Framework based on Hybrid RS;CMCC;《3GPP TSG-RAN WG1 #80bis，R1-152034》;20150424;全文 * |
| Further evaluations of UE-specific beamformed CSI-RS;CMCC;《3GPP TSG RAN WG1 Meeting #82，R1-154302》;20150828;全文 * |
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