CN108023674B

CN108023674B - Method for measuring channel state information, user equipment and network equipment

Info

Publication number: CN108023674B
Application number: CN201610974726.4A
Authority: CN
Inventors: 熊琦; 付景兴; 喻斌; 钱辰; 苏笛; 张英杰
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2016-11-04
Filing date: 2016-11-04
Publication date: 2022-11-08
Anticipated expiration: 2036-11-04
Also published as: CN108023674A

Abstract

The embodiment of the invention provides a method for measuring channel state information, user equipment and network equipment, wherein the method comprises the following steps: the method comprises the steps that network equipment configures system configuration information, user equipment determines a first signal by reading the system configuration information, then the user equipment sends a random lead code to the network equipment, after the network equipment receives the random lead code sent by the user equipment, a channel state information reporting instruction is set, random access feedback information carrying the set channel state information reporting instruction is sent to the user equipment, so that the user equipment determines the current state of a measurement channel according to the channel state information reporting instruction, then the user equipment determines the current state of the channel and sends the measured current state information of the channel to the network equipment, and therefore when no user specific CSI-RS exists, the user equipment can still measure the current state of the channel.

Description

Method for measuring channel state information, user equipment and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for measuring channel state information, a user equipment, and a network device.

Background

With the rapid development of the information industry, especially the growing demand from the mobile internet and the internet of things (IoT), the future mobile communication technology is challenged unprecedentedly. For example, according to the report ITU-R M of the International telecommunications union (International Telecommunication, abbreviated as ITU), imt. Beyond 2020.Traffic, it is expected that the mobile traffic will increase nearly 1000 times in 2020 compared to 2010 (era 4G), and the number of connected devices will also exceed 170 billion, as the huge number of IoT devices gradually penetrates into the mobile communication network, the number of connected devices will be more dramatic. To meet the unprecedented challenge, the communication industry and academia have developed a wide fifth generation of mobile communication technology research (5G) facing the 2020. Future 5G frameworks and overall goals have been discussed in ITU's report ITU-R M. [ imt.vision ], where the 5G demand landscape, application scenarios and various important performance indicators are specified. For the new requirements in 5G, ITU's report ITU-R M [ imt. User TECHNOLOGY tree ] provides information related to the technical trend of 5G, aiming at solving significant problems of significant improvement of system throughput, consistency of user experience, scalability to support IoT, latency, energy efficiency, cost, network flexibility, support of emerging services, flexible spectrum utilization, and the like.

In the LTE-a (Long Term Evolution Advanced), each radio frame is 10ms in length and is equally divided into 10 subframes. A downlink Transmission Time Interval (TTI) is defined in a subframe. Fig. 1 is a schematic diagram of a frame structure of a Frequency Division Duplex (FDD) system, where each downlink subframe includes two time slots, and each time slot includes 7 Orthogonal Frequency Division Multiplexing (OFDM) symbols for a general Cyclic Prefix (CP) length; for extended CP length, each slot contains 6 OFDM symbols, where T in FIG. 1 _f Is the length of the radio frame, T _slot Are time slots.

Fig. 2 is a schematic diagram of a subframe structure in an LTE system, where n is equal to 1, 2, or 3 for first n OFDM symbols, and is used to transmit Downlink Control information, including a Physical Downlink Control Channel (PDCCH for short) and other Control information; the remaining OFDM symbols are used to transmit a Physical Downlink Shared Channel (PDSCH). The basic granularity of Resource allocation is a Physical Resource Block (PRB) pair, where one PRB includes 12 consecutive subcarriers in frequency and corresponds to one slot in time. Two PRBs in two slots on the same subcarrier within one subframe are referred to as one PRB pair. In each PRB pair, each Resource Element (Resource Element, RE) is the minimum unit of time-frequency Resource, i.e. one subcarrier in frequency and one OFDM symbol in time. The REs may be used for different functions, respectively, for example, a part of the REs may be used for transmitting a Cell-specific Reference Signal (CRS), a user-specific Demodulation Reference Signal (DMRS), a Channel State Information Reference Signal (CSI-RS), a PDCCH, a PDSCH, and the like.

In an LTE system, PDSCH and PUSCH are transmitted by PDCCH or Enhanced Physical Downlink Control Channel (EPDCCH), where resources for transmitting PDSCH and PUSCH are also allocated by resource allocation signaling in PDCCH/EPDCCH, a maximum resource allocated for transmitting PDSCH and PUSCH is all PRB pairs in the entire system bandwidth, a minimum resource allocated for transmitting PDSCH and PUSCH is one PRB pair in the entire system bandwidth, and the granularity of resource allocation is one PRB pair, for a normal CP system, the time domain includes 14 OFDM symbols, and for an extended CP system, the time domain includes 12 OFDM symbols.

In order to enable the base station to determine an appropriate Modulation and Coding Scheme (Modulation and Coding Scheme, MCS) according to the quality of a Channel when scheduling PDSCH transmission, the UE needs to feed back Channel State Information (CSI), and the CSI report includes periodic CSI report and aperiodic CSI report. When the LTE feeds back the CSI, the following assumptions are made: obtaining the CP characteristic of the system, namely an extended CP or a normal CP, and then determining the number of OFDM symbols of each subframe according to the CP characteristic, wherein for the normal CP, each subframe comprises 14 OFDM symbols, and for the extended CP, each subframe comprises 12 OFDM symbols; according to the port number of the CRS obtained by detection, the CRS may have 1, 2 or 4 ports, and according to the port number of the CRS, which REs can not be used for PDSCH transmission are determined; it is assumed that the first three OFDM symbols within each subframe are used for transmission of control signaling and cannot be used for transmission of PDSCH. In the discussion of 5G communication networks, the use of persistent signals (always on signals) is to be reduced, and the common pilot CRS for the base station is an object to be emphasized. Once the CRS that is continuously transmitted is cancelled, other signals are used to replace the original function that the CRS originally has. DMRS is used for estimation and demodulation of control channels.

In the existing communication system, since there is a CRS as a reference signal that exists all the time, that is, every TTI exists, before the receiving end obtains a dedicated reference signal, the CRS may be used to measure the channel state and feed back to the transmitting end. However, when CRS is not present in the next-generation communication system, the receiver cannot measure the channel state and cannot feed back the measured channel state to the transmitter before obtaining a dedicated channel state information reference signal (CSI-RS).

Disclosure of Invention

In order to overcome the technical problems or at least partially solve the technical problems, the following technical scheme is particularly proposed:

an embodiment of the present invention provides a method for measuring channel state information, including:

the user equipment determines a first signal by reading system configuration information, wherein the first signal is used for measuring channel state information;

the user equipment sends a random lead code to network equipment;

the user equipment receives random access feedback information returned by the network equipment and acquires channel state information report indication information from the random access feedback information;

based on the channel state information reporting indication information, the user equipment measures the current state of a channel through the first signal;

and the user equipment sends the measured current state information of the channel to the network equipment. Another embodiment of the present invention provides a method for measuring channel state information, including:

the user equipment measures the current state of a channel through the first signal;

the user equipment sends the random lead code and the measured current state information of the channel to network equipment;

and the user equipment receives the random access feedback sent by the network equipment.

Another embodiment of the present invention provides a method for measuring channel state information, including:

the method comprises the steps that user equipment receives random access feedback information returned by network equipment, and specific channel state information reference signal pattern information of a user configured by the network equipment is obtained from the random access feedback information, wherein the specific channel state information reference signal pattern information of the user configured by the network equipment comprises at least one of the following items: a generation mode, a period and a time-frequency resource position corresponding to a specific channel state information reference signal of a user;

the user equipment measures the current state of a channel according to the specific channel state information reference signal pattern information of the user configured by the network equipment;

and the user equipment sends the measured current state information of the channel to the network equipment.

network equipment configures system configuration information, wherein the system configuration information is used for informing the user equipment of a signal which needs to be used when the current measurement channel state is measured;

after receiving the random lead code sent by the user equipment, the network equipment sets a channel state information reporting instruction, and sends random access feedback information carrying the set channel state information reporting instruction to the user equipment, so that the user equipment determines the current state of a measurement channel according to the channel state information reporting instruction;

and the network equipment receives the current state information of the channel sent by the user equipment.

the network equipment configures a first signal to measure the channel state information;

the network equipment receives a random lead code sent by the user equipment and the measured current state information of the channel;

and the network equipment sends random access feedback to the user equipment.

In another embodiment of the present invention, a method for measuring channel state information is provided, including:

the network equipment sends random access feedback information to the user equipment, wherein the random access feedback information comprises: the specific csi-rs pattern information of the user, which is configured by the network device, includes at least one of the following: generating mode, period and time frequency resource position corresponding to specific channel state information reference signal of user;

and the network equipment receives the current state information of the measured channel sent by the user equipment.

An embodiment of the present invention provides a user equipment, including:

a determining module, configured to determine a first signal by reading system configuration information, where the first signal is used to measure channel state information;

a sending module, configured to send a random preamble to a network device;

a receiving module, configured to receive random access feedback information returned by the network device;

an obtaining module, configured to obtain channel state information reporting indication information from the receiving module random access feedback information;

a measurement module, configured to report indication information based on the channel state information, and measure a current state of a channel through the first signal;

the sending module is further configured to send the measured current state information of the channel to the network device.

Another embodiment of the present invention provides a user equipment, including:

a measuring module for measuring a current state of a channel through the first signal;

and the sending module is used for sending the random lead code and the measured current state information of the channel to the network equipment.

And the receiving module is used for receiving the random access feedback sent by the network equipment.

the receiving module is used for receiving the random access feedback information returned by the network equipment;

an obtaining module, configured to obtain specific csi reference signal pattern information of the user configured by the network device from the random access feedback information received by the receiving module, where the specific csi reference signal pattern information of the user configured by the network device includes at least one of the following information: a generation mode, a period and a time-frequency resource position corresponding to a specific channel state information reference signal of a user;

a measuring module, configured to measure a current state of a channel according to specific channel state information reference signal pattern information of a user configured by the network device;

and the sending module is used for sending the measured current state information of the channel to the network equipment.

An embodiment of the present invention provides a network device, including:

a configuration module, configured to configure system configuration information, where the system configuration information is used to inform the user equipment of a signal that needs to be used when the current measurement channel state is measured;

a setting module, configured to set a channel state information reporting instruction after the network device receives the random preamble sent by the user equipment;

a sending module, configured to send random access feedback information carrying a channel state information reporting instruction set by the setting module to the user equipment, so that the user equipment determines a current state of a measurement channel according to the channel state information reporting instruction;

a receiving module, configured to receive current state information of a channel sent by the user equipment.

One embodiment of the present invention provides a network device, including:

a configuration module, configured to configure the first signal to perform channel state information measurement;

a receiving module, configured to receive a random preamble sent by the ue and current state information of a measured channel;

a sending module, configured to send a random access feedback to the user equipment.

One embodiment of the present invention provides a network device, including:

a sending module, configured to send random access feedback information to a user equipment, where the random access feedback information includes: the specific channel state information reference signal pattern information of the user, which is configured by the network device, includes at least one of the following: generating mode, period and time frequency resource position corresponding to specific channel state information reference signal of user;

a receiving module, configured to receive the current state information of the measured channel sent by the user equipment.

The invention provides a method for measuring channel state information, user equipment and network equipment, compared with the existing communication system, the CRS is used for measuring the channel state information and feeding back the channel state information to a terminal, the invention measures the current state of a channel through first information indicated by the network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state to the network equipment, namely, when the CRS does not continuously exist in a next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network equipment and/or the specific channel state information reference information pattern information of the user configured by the network equipment before obtaining CSI-RS, thereby when the CRS does not continuously exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state to the network equipment.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a frame structure diagram of a frequency division duplex system;

fig. 2 is a schematic diagram of a subframe structure in an LTE system;

FIG. 3 is a flowchart of a method for channel state information measurement according to an embodiment of the present invention;

FIG. 4 is a flow chart of another method for CSI measurement according to an embodiment of the present invention;

FIG. 5 is an exemplary diagram illustrating that a Cell specific CSI-RS period is the same as a PRACH period;

FIG. 6 is an exemplary diagram of a Cell specific CSI-RS period being smaller than a PRACH period;

FIG. 7 is an exemplary diagram of Cell specific CSI-RS at different frequencies;

FIG. 8 is a flow chart of another method for CSI measurement according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a PSS, SSS, ESS configured in FDM;

FIG. 10 is a diagram of a PSS, SSS, ESS configured in TDM form;

FIG. 11 is a diagram of a PSS, SSS, ESS configured in a hybrid FDM and TDM format;

FIG. 12 is a flow chart of another method for CSI measurement according to an embodiment of the present invention;

FIG. 13 is an exemplary diagram of the location of a single DMRS symbol on a broadcast channel

FIG. 14 is an exemplary diagram of the location of multiple DMRS symbols on a broadcast channel

FIG. 15 is a flow chart of another method of CSI measurement according to an embodiment of the present invention;

fig. 16 is a schematic diagram of a beam reference signal BRS constructed in FDM form;

fig. 17 is a schematic diagram of a beam reference signal BRS constructed in TDM form;

fig. 18 is a flow chart of another method of csi measurement according to an embodiment of the invention;

FIG. 19 is a flow chart of another method of CSI measurement according to an embodiment of the present invention;

fig. 20 is a flow chart of another method of csi measurement according to an embodiment of the invention;

FIG. 21 is a flow chart of another method of channel state information measurement according to an embodiment of the present invention;

FIG. 22 is a flow chart of another method of CSI measurement according to an embodiment of the present invention;

FIG. 23 is a flow chart of another method for CSI measurement according to an embodiment of the present invention;

fig. 24 is a schematic device structure diagram of a ue according to an embodiment of the present invention;

fig. 25 is a schematic device structure diagram of another ue according to an embodiment of the present invention;

fig. 26 is a schematic device structure diagram of another ue according to an embodiment of the present invention;

fig. 27 is a schematic device structure diagram of a network device according to an embodiment of the present invention;

fig. 28 is a schematic device structure diagram of another network device according to an embodiment of the present invention;

fig. 29 is a schematic device structure diagram of another network device according to an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative only and should not be construed as limiting the invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As will be understood by those skilled in the art, a "terminal" as used herein includes both devices having a wireless signal receiver, which are only devices having a wireless signal receiver without transmit capability, and devices having receive and transmit hardware, which are devices having receive and transmit hardware capable of two-way communication over a two-way communication link. Such a device may include: a cellular or other communication device having a single line display or a multi-line display or a cellular or other communication device without a multi-line display; PCS (Personal Communications Service), which may combine voice, data processing, facsimile and/or data communication capabilities; a PDA (Personal Digital Assistant) which may include a radio frequency receiver, a pager, internet/intranet access, web browser, notepad, calendar and/or GPS (Global Positioning System) receiver; a conventional laptop and/or palmtop computer or other device having and/or including a radio frequency receiver. As used herein, a "terminal" or "terminal device" may be portable, transportable, installed in a vehicle (aeronautical, maritime, and/or land-based), or situated and/or configured to operate locally and/or in a distributed fashion at any other location(s) on earth and/or in space. As used herein, a "terminal Device" may also be a communication terminal, a web terminal, a music/video playing terminal, such as a PDA, an MID (Mobile Internet Device) and/or a Mobile phone with music/video playing function, or a smart tv, a set-top box, etc.

An embodiment of the present invention provides a method for measuring channel state information, as shown in fig. 3, the method includes:

step 301, the network device configures system configuration information.

Wherein, the system configuration information is used for informing the user equipment of a signal which needs to be used for currently measuring the channel state.

For the embodiment of the present invention, the System configuration Information may be a Master Information Block (hereinafter, referred to as Master Information Block, abbreviated as MIB) or a System Information Block (hereinafter, referred to as System Information Block, abbreviated as SIB). In the embodiments of the present invention, the network device directly states in the MIB that the channel is measured through the cell-specific channel state information reference signal CSI-RS.

Step 302, the user equipment determines the first signal by reading the system configuration information.

Wherein the first signal is used for measuring channel state information.

For the embodiment of the present invention, when the user equipment initially accesses the system or reads updated system configuration information, the first signal is determined by the system configuration information.

For the embodiment of the present invention, when the ue needs to feed back the channel state information before being allocated with the dedicated reference signal for measuring the channel information, the ue reads the system configuration information or determines to use a specific signal to measure the channel state information according to the protocol specification, where the specific signal is the first signal in this application.

For the embodiment of the present invention, the first Signal may be a cell-specific Channel State Information Reference Signal (hereinafter, referred to as "Channel State Information-Reference Signal", abbreviated as "CSI-RS"), a Primary Synchronization Signal (hereinafter, referred to as "Primary Synchronization Signal", abbreviated as "PSS"), a Secondary Synchronization Signal (hereinafter, referred to as "SSS"), a Demodulation Reference Signal (hereinafter, referred to as "Demodulation Reference Signal", abbreviated as "DM RS"), and/or a Beam Reference Signal (hereinafter, referred to as "Beam Reference Signal", abbreviated as "Beam RS"), etc.

For the embodiments of the present invention, the above protocol may directly specify what signals (e.g., cell-specific CSI-RS, primary synchronization signal PSS, secondary synchronization signal SSS, demodulation reference signal DM RS and/or Beam reference signal Beam RS) are used to measure the channel for the protocol, or may specify a mapping relationship, e.g., the PSS and SSS are different in time position by N (N is an integer) slots, and determine what signals are used to measure the channel according to the mapping relationship between the size of N and the type of the signals. The CSI includes Rank Indication (RI), precoding Matrix Indication (PMI), channel Quality Indication (CQI), and/or the like.

Step 303, the user equipment sends the random preamble to the network equipment.

For the embodiment of the invention, the user equipment carries out random access operation by sending the random lead code to the network equipment. Wherein the trigger of the random access operation may be: the user equipment is initially accessed, or the user equipment is already accessed to the network, but the random access is needed again when the uplink is out of synchronization.

Step 304, after the network device receives the random preamble sent by the user equipment, setting a channel state information reporting instruction, and sending the random access feedback information carrying the set channel state information reporting instruction to the user equipment, so that the user equipment determines the current state of the measurement channel according to the channel state information reporting instruction.

For the embodiment of the present invention, after receiving the random preamble sent by the user equipment, when the network equipment has downlink data sent to the user equipment, the network equipment sets a channel state information reporting instruction in Msg2 (i.e. random access feedback RAR). The network device may set a channel state information Report Indicator (CSI Report Indicator) in Msg2 to a first preset value, where the first preset value may be 1, that is, CSI Report Indicator =1; when the network device does not have downlink data which needs to be sent to the user equipment, the network device sets the channel state information Report indication to a second preset value in Msg2, where the second preset value may be 0, that is, CSI Report Indicator =0.

Step 305, based on the channel state information reporting indication information, the ue measures the current state of the channel through the first signal.

When the channel state information report indication information is a preset value, the user equipment measures the current state of the channel through a first signal.

Step 306, the ue sends the measured current status information of the channel to the network device.

Step 307, the network device receives the current state information of the channel sent by the user equipment.

For the embodiment of the present invention, if there is no channel state information feedback or the channel state information is not accurately fed back, or even if the network device correctly receives the channel state information fed back by the user device, the network device may send the downlink data of the user device according to a fixed downlink transmission mode. In the embodiment of the present invention, when the network device has a 2-antenna port, the network device may send downlink data of the user equipment according to a Space Frequency Block Code (SFBC); when the network device has 4 antenna ports, the network device may Transmit downlink data of the user equipment according to Space Frequency Block Code (SFBC) and Frequency Switch Transmit Diversity (FSTD).

For the embodiments of the present invention, the absence of channel state information feedback may be caused by the following:

1. the network device does not set a channel state information feedback indication, namely, does not have a CSI report indicator;

2. the network device sets the channel state information feedback indication, but the user equipment does not receive the indication correctly and cannot feed back the indication.

For the embodiment of the present invention, the inaccurate feedback of the channel state information may be caused by the following situations:

1. the user equipment does not measure correctly, so that the channel information cannot be fed back accurately;

2. the user equipment correctly measures and accurately feeds back the channel information, and the network equipment does not correctly receive the channel information.

The embodiment of the invention provides a method for measuring channel state information, compared with the prior communication system which utilizes CRS to measure the channel state information and feeds back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state to the network equipment, namely when the CRS does not continuously exist in a next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network equipment and/or the specific channel state information reference information pattern information of the user configured by the network equipment before obtaining CSI-RS, thereby when the CRS does not continuously exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state to the network equipment.

Example one

In another possible implementation manner of the embodiment of the present invention, on the basis shown in fig. 3, step 301, configuring, by a network device, system configuration information, includes step 401 shown in fig. 4, step 302, determining, by a user equipment, a first signal by reading the system configuration information, includes step 402 shown in fig. 4, step 305, reporting indication information based on channel state information, and measuring, by the user equipment, a current state of a channel through the first signal, including step 405 shown in fig. 4, where operations performed in steps 403-404 and 406-407 are the same as operations performed in steps 303-304 and 306-307 in fig. 3, and are not described again here.

Step 401, the network device configures a cell-specific channel state information reference signal in the system configuration information to perform channel state measurement.

For the embodiment of the present invention, the cell-specific CSI-RS has any one of the following characteristics:

1. has a certain periodicity of X (X > 0) milliseconds;

2. the periodicity is in a certain time Y milliseconds, the periodicity is X (X > 0) milliseconds, Y > M X X, and M is a positive integer.

Wherein, the following condition should be satisfied for the size of the cycle length:

if the period of the random access channel is M (M > 0) ms, the period of the Cell specific CSI-RS cannot be greater than M, i.e. X is less than or equal to M. Fig. 5 shows an exemplary diagram in which the period of the cell-specific csi reference signal is equal to the period of the random access channel and both are 10ms, and fig. 6 shows an exemplary diagram in which the period of the cell-specific csi reference signal is smaller than the period of the random access channel (the latter period is 10ms, and the former period is 5 ms).

It is worth noting that: the period represents the repetition in time, and in the frequency domain, the reference signals at different period times can be at different frequency positions, as shown in fig. 7, the last period time is at the higher frequency part, and the next period time is at the lower frequency part.

Step 402, the user equipment determines that the first signal is a cell-specific csi reference signal by reading the system configuration information.

For the embodiment of the invention, when the user equipment accesses the system, the downlink synchronization signals including the Primary Synchronization Signal (PSS) and the Secondary Synchronization Signal (SSS) are read first, then the broadcast signals of the system are read, and the related system configuration information in the master information block MIB and the system information block SIB is read. In the system information, a cell-specific common channel state information reference signal (cellspeicic CSI-RS) is specified.

Step 405, based on the channel state information reporting indication information, the user equipment measures the current state of the channel through the cell specific channel state information reference signal.

For the embodiment of the present invention, the predetermined value in the embodiment of the present invention is the first predetermined value. For example, the first preset value may be 1.

For the embodiment of the present invention, if the CSI Report Indicator =1, the ue measures the channel state according to the cell-specific CSI reference signal configured by the master information block MIB and/or the system information block SIB. Reporting the measured channel state information to network equipment in the Msg3 message; if the CSI Report Indicator =0, the ue does not perform special processing, that is, does not need to measure the current state of the channel, and also needs to send the Msg3 message.

Example two

In the embodiment of the present invention, on the basis shown in fig. 3, step 301, configuring system configuration information by a network device, including step 801 shown in fig. 8, step 302, determining, by a user equipment, a first signal by reading the system configuration information, including step 802 shown in fig. 8, step 305, reporting indication information based on channel state information, and measuring, by the user equipment, a current state of a channel by using the first signal, including step 805 shown in fig. 8, where operations performed in steps 803-804 and 806-807 are the same as operations performed in steps 303-304 and 306-307 in fig. 3, and are not described herein again.

Step 801, the network device configures a synchronization signal in the system configuration information to perform channel state measurement.

For the embodiment of the present invention, the network device specifies, according to the protocol, that the ue performs channel measurement and feeds back the measurement result by using the synchronization signal when the ue does not obtain the user-specific csi reference signal.

Wherein the synchronization signal includes: a primary synchronization signal, a secondary synchronization signal, an extended synchronization signal, or any combination of the three.

The synchronous signal is a main synchronous signal and/or an auxiliary synchronous signal and/or an extended synchronous signal which are formed in a time division and/or frequency division mode.

For example, as shown in fig. 9, when the synchronization signal includes three synchronization signals of a primary synchronization signal and a secondary synchronization signal to extend the synchronization signal, and the synchronization signals are configured in an FDM manner, as shown in fig. 10, when the synchronization signal includes three synchronization signals of a primary synchronization signal and a secondary synchronization signal to extend the synchronization signal, and the synchronization signals are configured in a TDM manner, as shown in fig. 11.

Step 802, the user equipment determines that the first signal is a synchronization signal by reading the system configuration information.

For the embodiment of the invention, when the user equipment is accessed to the system for the first time, the synchronization signal of the cell is searched first, the broadcast channel is read, the MIB and the SIB are read to acquire the configuration information of the system, and the user equipment determines that the system is scheduled to perform the measurement of the channel and feed back the measurement result by using the synchronization signal when the system does not acquire the user-specific channel state information reference signal.

Step 805, reporting the indication information based on the channel state information, and the ue measures the current state of the channel through the synchronization signal.

For the embodiment of the present invention, if the CSI Report Indicator =1, the ue measures the channel state using the synchronization signal according to the system configuration specification. Reporting the measured channel state information to the network equipment in the Msg3 message; if the CSI Report Indicator =0, the ue does not perform special processing, that is, does not need to measure the current state of the channel, and also needs to send the Msg3 message.

EXAMPLE III

In another possible implementation manner of the embodiment of the present invention, on the basis shown in fig. 3, step 301, configuring system configuration information by a network device, includes step 1201 shown in fig. 12, step 302, determining, by a user equipment, a first signal by reading the system configuration information, includes step 1202 shown in fig. 12, step 305, reporting indication information based on channel state information, and measuring, by the user equipment, a current state of a channel by the first signal, includes step 1205 shown in fig. 12, where operations performed in steps 1203-1204, and 1206-1207 are the same as operations performed in steps 303-204, and 306-307 in fig. 3, and are not repeated here.

Step 1201, the network device configures demodulation reference signals of the broadcast channel in the system configuration information to perform channel state measurement.

For the embodiment of the present invention, it can be directly specified in the protocol that when the user-specific csi reference signal is not obtained, the ue can use the DM RS of the broadcast channel to perform channel measurement and feed back the measurement result.

Step 1202, the user equipment determines that the first signal is a demodulation reference signal of a broadcast channel by reading system configuration information.

For the embodiment of the invention, when the user equipment accesses the system, the downlink synchronization signals including the Primary Synchronization Signal (PSS), the Secondary Synchronization Signal (SSS) and the like are read first, and then the broadcast channel of the system is read, and the related system configuration information in the master information block MIB and the system information block SIB is read.

For the embodiments of the present invention, the demodulation reference signal DM RS is located in the broadcast channel, and is used to demodulate data information such as MIB, and its period is less than or equal to the period of the broadcast channel, as shown in fig. 13, or there may be a plurality of DM RS symbols in the broadcast channel in one radio frame, as shown in fig. 14.

Step 1205, based on the channel state information reporting indication information, the ue measures the current state of the channel through the demodulation reference signal of the broadcast channel.

For the embodiment of the present invention, if the CSI Report Indicator =1, the ue measures the channel state using the demodulation reference signal of the broadcast channel according to the system configuration specification. Reporting the measured channel state information to network equipment in the Msg3 message; if the CSI Report Indicator =0, the ue does not perform special processing, that is, does not need to measure the current state of the channel, and also needs to send the Msg3 message.

Example four

In the embodiment of the present invention, based on fig. 3, step 301 of configuring system configuration information by a network device is described, where the step 301 includes step 1501 shown in fig. 15, step 302 of determining, by a user equipment, a first signal by reading the system configuration information, including step 1502 shown in fig. 15, step 305 of reporting indication information based on channel state information, and measuring, by the user equipment, a current state of a channel by a first signal, including step 1505 shown in fig. 15, where operations performed in steps 1503-1504, 1506-1507 are the same as operations performed in steps 303-304, 306-307 in fig. 3, and are not described herein again.

Step 1501, the network device configures the beam reference signal in the system configuration information to perform channel state measurement.

For the embodiment of the present invention, the network device may directly specify in the protocol that when the ue-specific csi reference signal is not obtained, the ue may use the BRS to perform channel measurement and feed back the measurement result.

For the embodiment of the present invention, the beam reference signal BRS is sent by the network device, so that the user equipment can measure the best base station beam transmitting direction and feed back the best beam number (english full name: best beam index). The beam reference signal BRS may be formed in an FDM format or in a TDM format.

For example, as shown in fig. 16, BRS is constructed by FDM form, and as shown in fig. 17, BRS is constructed by TDM form.

Step 1502, the ue determines that the first signal is a beam reference signal by reading the system configuration information.

For the embodiment of the present invention, when the ue accesses the system, the ue reads downlink synchronization signals, including Primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS), and then reads the broadcast channel of the system, and reads the relevant system configuration information in the master information block MIB and the system information block SIB.

Step 1505, reporting indication information based on the channel state information, the user equipment measures the current state of the channel through the beam reference signal.

For the embodiment of the present invention, if the CSI Report Indicator =1, the ue measures the channel state using the BRS according to the system configuration specification. Reporting the measured channel state information to network equipment in the Msg3 message; if the CSI Report Indicator =0, the ue does not perform special processing, that is, does not need to measure the current state of the channel, and also needs to send the Msg3 message.

The embodiment of the present invention introduces a way of performing channel measurement by using two-step random access, wherein another method for measuring channel state information is provided in the embodiment of the present invention, as shown in fig. 18, the method includes the following steps.

Step 1801, the network device configures the first signal to perform channel state information measurement.

Wherein the first signal comprises any one of: cell-specific channel state information reference signals, synchronization signals, demodulation reference signals of broadcast channels, beam reference signals.

For the embodiment of the present invention, the network device configures the cell-specific csi-rs pattern according to the protocol specification, or specifies in the protocol that the ue can measure the current csi of the channel using the synchronization signal, the demodulation reference signal in the broadcast signal, and the beam reference signal.

Step 1802, the user equipment determines the first signal by reading the system configuration information.

Wherein the first signal is used for measuring channel state information.

Step 1803, the user equipment measures the current state of the channel through the first signal.

Step 1804, the ue sends the random preamble and the measured current status information of the channel to the network device.

For the embodiment of the invention, the user equipment sends the random preamble and the data load to the network equipment together, wherein the measured current state information of the channel is carried in the data load and sent.

Step 1805, the network device receives the random preamble sent by the user equipment and the measured current status information of the channel.

For the embodiment of the invention, after the network equipment detects the lead code sent by the user equipment, the data load is decoded, and the current state information of the measured channel sent by the user equipment is obtained.

Step 1806, the network device sends a random access feedback to the user equipment.

The embodiment of the invention provides a method for measuring channel state information, compared with the existing communication system which utilizes CRS to measure the channel state information and feeds back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state of the channel to the network equipment, namely when the CRS does not continuously exist in a next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network equipment and/or the specific channel state information reference information pattern information of the user configured by the network equipment before obtaining CSI-RS, thereby when the CRS does not continuously exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state of the channel to the network equipment.

EXAMPLE five

The embodiment of the present invention introduces a method for performing channel measurement by using a user-specific csi reference signal, wherein another method for measuring csi is provided in the embodiment of the present invention, as shown in fig. 19, and the method includes the following steps.

Step 1901, the network device sends random access feedback information to the user equipment.

Wherein, the random access feedback information includes: the specific csi reference signal pattern information of the user configured by the network device includes: the generation mode, period and time frequency resource position corresponding to the specific channel state information reference signal of the user.

For the embodiment of the present invention, when the ue performs random access, the system has a downlink message to be sent to the ue, so that the channel state information report indicates predetermined data in the Msg2 (i.e. the random access feedback RAR) in the random access process, and if the channel state information report indicates predetermined data, the data is set to 1, that is, the CSI report indicator =1. Meanwhile, the network equipment configures a user-specific channel state information reference signal for the user equipment in the random access feedback RAR.

For the embodiment of the present invention, there are two main methods for a network device to configure a user-specific csi reference signal for a user device in a RAR. In the embodiment of the present invention, the network device may directly compile all the allocated UE-specific CSI-RS pattern information into bit data, where the UE-specific CSI-RS pattern information includes: a signal generation mode and a time-frequency resource position; the network device may send the allocated configuration number to the user equipment, and the user equipment finds specific UE-specific CSI-RS configuration information through a given configuration number and a table. For example, in 4 types of configuration patterns of CSI-RS, a user may be notified of CSI configuration information allocated to the user by using 2bit information, where the pattern information includes a signal generation manner, a period, and a time-frequency resource location and/or a UE-specific CSI-RS.

Wherein, the first table is a reference signal configuration table of four channel state information.

Watch 1

Configuration number	Arrangement pattern
		00	Channel state information reference signal pattern 1
01	Channel state information reference signal pattern 2
		10	Channel state information reference signal pattern 3
11	Channel state information reference signal pattern 4

Step 1902, the ue receives the random access feedback information returned by the network device, and obtains the specific csi-rs pattern information of the user configured by the network device from the random access feedback information.

The specific channel state information reference signal pattern information of the user configured by the network equipment comprises: the generation mode, period and time frequency resource position corresponding to the specific channel state information reference signal of the user.

For the embodiment of the present invention, when the ue accesses the system, the ue reads a downlink synchronization signal first, then reads a broadcast signal of the system, and reads related system configuration information in a master information block MIB and a system information block SIB, where the downlink synchronization signal includes a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS).

Step 1903, the ue measures the current state of the channel according to the specific csi-rss pattern information of the user configured by the network device.

Step 1904, the ue sends the measured current status information of the channel to the network device.

In step 1905, the network device receives the current status information of the measured channel sent by the user equipment.

For the embodiment of the present invention, if there is no feedback of the channel state information or the channel state information is not fed back accurately, or even if the network device correctly receives the channel state information fed back by the user device, the network device may send the downlink data of the user device according to a fixed downlink transmission mode. In the embodiment of the present invention, when the network device has a 2-antenna port, the network device may send downlink data of the user equipment according to a Space Frequency Block Code (SFBC); when the network device has a 4-antenna port, the network device may Transmit downlink data of the user equipment according to a Space Frequency Block Code (SFBC) and a Frequency Switch Transmit Diversity (FSTD).

In another possible implementation manner of the embodiment of the present invention, on the basis of fig. 19, step 1903, where the ue measures the current state of the channel according to the specific channel state information reference signal pattern information of the user configured by the network device, includes step 2003 shown in fig. 20, where operations performed in steps 2001-2002 and 2004-2005 are the same as operations performed in steps 1901-1902 and 1904-1905 in fig. 19, and are not described again.

Step 2003, if the ue directly receives the specific csi reference signal pattern of the user, the ue measures the current status of the channel according to the specific csi reference signal pattern of the user.

In another possible implementation manner of the embodiment of the present invention, on the basis as shown in fig. 19, in step 1903, the user equipment measures the current state of the channel according to the specific channel state information reference signal pattern information of the user configured by the network equipment, according to the specific channel state information reference signal pattern information of the user, which is shown in fig. 21, including steps 2103-2104 shown in fig. 21, where operations performed in steps 2101-2102 and 2105-2106 are the same as operations performed in steps 1901-1902 and 1904-1905 in fig. 19, and are not described again here.

Step 2103, if the specific csi reference signal pattern information of the user, which is obtained by the user equipment and configured by the network equipment, is a serial number, the user equipment determines the specific csi reference signal pattern of the user, which is configured by the network equipment, according to the serial number and a preconfigured csi reference signal pattern configuration table.

For the embodiment of the present invention, the ue is pre-configured with a csi-rss pattern configuration table, as shown in table i. When the specific channel state information reference signal pattern information of the user configured by the network device, acquired by the user device, is a number, the user device may find the channel state information reference signal pattern corresponding to the number according to the number. For example, if the number of the specific csi reference signal pattern information of the user acquired by the ue is 00, the ue determines that the csi reference signal pattern configured by the network device for the ue is pattern 1.

Step 2104, the user equipment measures the current state of the channel according to the determined user specific channel state information reference signal pattern configured by the network equipment.

In the embodiment of the present invention, a method of using a user-specific channel state information reference signal and performing channel measurement through a four-step random access procedure is described, where in another possible implementation manner of the embodiment of the present invention, on the basis shown in fig. 19, step 1901, where the network device sends random access feedback information to the user device, step 2202 shown in fig. 22 is further included before, step 1902, where the user device receives the random access feedback information returned by the network device, and obtains specific channel state information reference signal pattern information of the user configured by the network device from the random access feedback information, step 2201 shown in fig. 22, step 1904, where the user device sends current state information of the measured channel to the network device, includes step 2206 shown in fig. 22, step 1905, where the step 2203-2205 is the same as the operation shown in steps 1901-1903 shown in fig. 19, and is no longer repeated here.

Step 2201, the user equipment sends a random preamble to the network equipment.

Step 2202, the network device receives the random preamble sent by the user device.

Step 2206, the user equipment adds the measured current state information of the channel to the Msg3 information, and sends the Msg3 information to the network equipment.

Step 2207, the network device receives the Msg3 message which is sent by the user device and carries the measured current state information of the channel, and obtains the measured current state information of the channel from the Msg3 message.

EXAMPLE six

In the embodiment of the present invention, a method of using a user-specific channel state information reference signal and performing channel measurement through a two-step random access procedure is described, where in another possible implementation manner of the embodiment of the present invention, on the basis shown in fig. 19, step 1901, where a network device sends random access feedback information to a user device, step 2302-2303 shown in fig. 23 is further included before the step, step 1902, where the user device receives random access feedback information returned by the network device, and obtains specific channel state information reference signal pattern information of a user configured by the network device from the random access feedback information, step 2301 shown in fig. 23 is further included before the step, step 1902, where the user device receives random access feedback information returned by the network device, and obtains the specific channel state information reference signal pattern information of the user configured by the network device from the random access feedback information, step 1903, where the user device measures a current state of a channel according to the specific channel state information reference signal pattern information of the user configured by the network device, step 1904 shown in fig. 1907-2304, and operation steps are further included in step 1902-2304: and the network equipment allocates uplink resources for the user equipment.

Step 2301, the user equipment sends the random preamble and the data payload to the network equipment.

Wherein the current state of the channel measured by the user equipment is not included in the data payload.

Step 2302, a network device receives a random preamble and a data payload sent by a user device.

For the embodiments of the present invention, when the network device detects the random preamble transmitted by the user equipment, the data payload is decoded.

Step 2303, the network device configures specific csi-rs pattern information of the user, and allocates uplink resources to the user equipment according to the data load.

Wherein, the size of the uplink resource can be used for carrying the measured channel state information.

For the embodiment of the invention, when the network equipment refers to the signal pattern information for the specific channel state information of the user equipment and allocates the uplink resource for the user equipment according to the data load, the channel state information reporting indication is set. In the embodiment of the present invention, when there is downlink data to be sent to the user equipment in the network device, a channel state information Report Indicator (CSI Report Indicator, english full name) is set to a first predetermined value in Msg2, for example, the first predetermined value may be 1, that is, CSI Report Indicator =1; when the network device does not have downlink data to send to the user equipment, the network device sets the channel state information Report indication to a second predetermined value in Msg2, for example, the second predetermined value may be 0, that is, CSI Report Indicator =0.

Step 2305, the ue receives the random access feedback information returned by the network device, and obtains the specific channel state information reference signal pattern information of the user configured by the network device and the uplink resource configured by the network device for the user from the random access feedback information.

Step 2306, the user equipment sends the measured current state information of the channel to the network equipment through the uplink resource configured for the user by the network equipment.

An embodiment of the present invention provides a user equipment, as shown in fig. 24, where the user equipment includes: the device comprises a determining module 2401, a sending module 2402, a receiving module 2403, an obtaining module 2404 and a measuring module 2405.

A determining module 2401, configured to determine the first signal by reading the system configuration information.

Wherein the first signal is used for measuring channel state information.

A sending module 2402, configured to send the random preamble to the network device.

A receiving module 2403, configured to receive random access feedback information returned by the network device.

An obtaining module 2404, configured to obtain channel state information reporting indication information from the random access feedback information of the receiving module 2403.

A measuring module 2405, configured to measure a current state of the channel through the first signal based on the channel state information reporting indication information.

The sending module 2402 is further configured to send the measured current state information of the channel to the network device.

The embodiment of the invention provides user equipment, compared with the existing communication system in which CRS is used for measuring channel state information and feeding back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state of the channel to the network equipment.

An embodiment of the present invention provides another user equipment, as shown in fig. 25, where the user equipment includes: a determination module 2501, a measurement module 2502, a transmission module 2503, a reception module 2504.

The determining module 2501 is configured to determine the first signal by reading the system configuration information.

Wherein the first signal is used for measuring channel state information.

A measuring module 2502, configured to measure a current state of the channel through the first signal.

A sending module 2503, configured to send the random preamble and the measured current state information of the channel to the network device.

A receiving module 2504, configured to receive a random access feedback sent by a network device.

The embodiment of the invention provides user equipment, compared with the prior communication system which utilizes CRS to measure channel state information and feed back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state to the network equipment, namely when the CRS does not continuously exist in a next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network equipment and/or the specific channel state information reference information pattern information of the user configured by the network equipment before obtaining CSI-RS, so that when the CRS does not continuously exist in the next generation communication system, a mobile terminal can still measure the current state of the channel and feed back the current state of the channel to the network equipment.

An embodiment of the present invention provides another user equipment, as shown in fig. 26, where the user equipment includes: the system comprises a receiving module 2601, an obtaining module 2602, a measuring module 2603 and a sending module 2604.

The receiving module 2601 is configured to receive random access feedback information returned by the network device.

An obtaining module 2602, configured to obtain specific csi-rs pattern information of the user configured by the network device from the random access feedback information received by the receiving module 2601.

The specific channel state information reference signal pattern information of the user configured by the network equipment comprises at least one of the following information: the generation mode, period and time frequency resource position corresponding to the specific channel state information reference signal of the user.

A measuring module 2603, configured to measure the current state of the channel according to the specific channel state information reference signal pattern information of the user configured by the network device.

A sending module 2604, configured to send the measured current state information of the channel to the network device.

An embodiment of the present invention provides a network device, as shown in fig. 27, where the network device includes: configuration module 2701, setting module 2702, sending module 2703, and receiving module 2704.

A configuration module 2701, configured to configure system configuration information.

The system configuration information is used for informing the user equipment of a signal which needs to be used for currently measuring the channel state.

A setting module 2702, configured to set a channel state information reporting instruction after the network device receives the random preamble sent by the user equipment.

A sending module 2703, configured to send the random access feedback information carrying the channel state information reporting instruction set by the setting module 2702 to the user equipment, so that the user equipment determines the current state of the measurement channel according to the channel state information reporting instruction.

A receiving module 2704, configured to receive current state information of a channel sent by a user equipment.

The embodiment of the invention provides a network device, compared with the existing communication system in which a CRS is used to measure channel state information and feed back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by the network device and/or specific channel state information reference information pattern information of a user configured by the network device and feeds back the current state of the channel to the network device, namely, when the CRS does not continuously exist in the next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network device and/or the specific channel state information reference information pattern information of the user configured by the network device before obtaining a CSI-RS, so that when the CRS does not continuously exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state of the channel to the network device.

An embodiment of the present invention provides another network device, as shown in fig. 28, where the network device includes: a configuration module 2801, a receiving module 2802, a transmitting module 2803.

A configuring module 2801 configured to configure the first signal to perform channel state information measurement according to a protocol specification.

Wherein the first signal comprises: cell-specific channel state information reference signals, and/or synchronization signals, and/or demodulation reference signals of a broadcast channel, and/or beam reference signals.

A receiving module 2802, configured to receive a random preamble transmitted by a user equipment and current status information of a measured channel.

A sending module 2803, configured to send random access feedback to the user equipment.

The embodiment of the invention provides network equipment, compared with the prior communication system which utilizes CRS to measure channel state information and feed back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by the network equipment and/or specific channel state information reference information pattern information of a user configured by the network equipment and feeds back the current state of the channel to the network equipment, namely when the CRS does not exist in a next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network equipment and/or the specific channel state information reference information pattern information of the user configured by the network equipment before obtaining CSI-RS, so that when the CRS does not exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state of the channel to the network equipment.

An embodiment of the present invention provides another network device, as shown in fig. 29, where the network device includes: a sending module 2901 and a receiving module 2902.

A sending module 2901 is configured to send the random access feedback information to the user equipment.

Wherein, the random access feedback information includes: the specific channel state information reference signal pattern information of the user, which is configured by the network equipment, includes at least one of the following: the generation mode, period and time frequency resource position corresponding to the specific channel state information reference signal of the user.

A receiving module 2902 is configured to receive the current state information of the measured channel sent by the user equipment.

The embodiment of the invention provides a network device, compared with the existing communication system in which CRS is used to measure channel state information and feed back the channel state information to a terminal, the embodiment of the invention measures the current state of a channel through first information indicated by the network device and/or specific channel state information reference information pattern information of a user configured by the network device and feeds back the current state to the network device, namely when the CRS does not continuously exist in the next generation communication system, a receiving end can measure the current state of the channel through the first information indicated by the network device and/or the specific channel state information reference information pattern information of the user configured by the network device before obtaining CSI-RS, so that when the CRS does not continuously exist in the next generation communication system, the mobile terminal can still measure the current state of the channel and feed back the current state to the network device.

The user equipment and the network device provided in the embodiments of the present invention may implement the method embodiments provided above, and for specific function implementation, reference is made to the description in the method embodiments, which is not repeated herein.

Those skilled in the art will appreciate that the present invention includes apparatus directed to performing one or more of the operations described in the present application. These devices may be specially designed and manufactured for the required purposes, or they may comprise known devices in general-purpose computers. These devices have stored within them computer programs that are selectively activated or reconfigured. Such a computer program may be stored in a device (e.g., computer) readable medium, including, but not limited to, any type of disk including floppy disks, hard disks, optical disks, CD-ROMs, and magnetic-optical disks, ROMs (Read-Only memories), RAMs (Random Access memories), EPROMs (Erasable Programmable Read-Only memories), EEPROMs (Electrically Erasable Programmable Read-Only memories), flash memories, magnetic cards, or optical cards, or any type of media suitable for storing electronic instructions, and each coupled to a bus. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (e.g., a computer).

It will be understood by those within the art that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. Those skilled in the art will appreciate that the computer program instructions may be implemented by a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, implement the aspects specified in the block diagrams and/or flowchart block or blocks of the present disclosure.

Those of skill in the art will appreciate that various operations, methods, steps in the processes, acts, or solutions discussed in the present application may be alternated, modified, combined, or deleted. Further, various operations, methods, steps in the flows, which have been discussed in the present application, may be interchanged, modified, rearranged, decomposed, combined, or eliminated. Further, steps, measures, schemes in the various operations, methods, procedures disclosed in the prior art and the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted.

The foregoing is only a partial embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A method performed by a user equipment in a communication system, the method comprising:

determining a first signal by reading system configuration information in case that channel measurement cannot be performed based on a reference signal of dedicated measurement channel information, the first signal being used for measuring channel state information;

sending a random preamble to the network device;

receiving random access feedback information returned by the network equipment, and acquiring channel state information reporting indication information from the random access feedback information;

measuring a current state of a channel through the first signal based on the channel state information reporting indication information;

and sending the measured current state information of the channel to the network equipment.

2. The method of claim 1,

the step of determining the first signal by reading the system configuration information includes:

determining that the first signal is a cell-specific channel state information reference signal by reading the system configuration information;

wherein the step of measuring the current state of the channel through the first signal includes:

measuring a current state of a channel through the cell-specific channel state information reference signal;

or,

determining the first signal as a synchronization signal by reading the system configuration information, the synchronization signal including at least one of: a primary synchronization signal, a secondary synchronization signal, an extended synchronization signal;

measuring a current state of a channel through the synchronization signal;

or,

determining that the first signal is a demodulation reference signal of a broadcast channel by reading system configuration information;

measuring a current state of a channel through a demodulation reference signal of the broadcast channel;

or,

determining the first signal as a beam reference signal by reading the system configuration information;

wherein the measuring a current state of a channel through the first signal includes:

and measuring the current state of the channel through the beam reference signal.

3. A method performed by a user equipment in a communication system, the method comprising:

measuring a current state of a channel through the first signal;

sending the random lead code and the measured current state information of the channel to network equipment;

and receiving random access feedback sent by the network equipment.

4. The method of claim 3, wherein the first signal comprises at least one of: cell-specific channel state information reference signals, synchronization signals, demodulation reference signals of broadcast channels, beam reference signals.

5. A method performed by a user equipment in a communication system, the method comprising:

receiving random access feedback information returned by a network device, and acquiring specific channel state information reference signal pattern information of a user configured by the network device from the random access feedback information, wherein the specific channel state information reference signal pattern information of the user configured by the network device comprises at least one of the following items: generating mode, period and time frequency resource position corresponding to specific channel state information reference signal of user;

measuring the current state of a channel according to the specific channel state information reference signal pattern information of the user configured by the network equipment;

6. The method of claim 5, wherein the step of measuring the current state of the channel according to the specific channel state information reference signal pattern information of the user configured by the network device comprises:

if a specific channel state information reference signal pattern of a user is directly received, the user equipment measures the current state of a channel according to the specific channel state information reference signal pattern of the user;

or,

if the obtained specific channel state information reference signal pattern information of the user configured by the network equipment is a serial number, the user equipment determines the specific channel state information reference signal pattern of the user configured by the network equipment according to the serial number and a pre-configured channel state information reference signal pattern configuration table;

and measuring the current state of the channel according to the determined user-specific channel state information reference signal pattern configured by the network equipment.

7. The method according to claim 5 or 6, wherein the step of receiving the random access feedback information returned by the network device is preceded by:

sending a random preamble to the network device;

wherein the step of sending the measured current state information of the channel to the network device includes:

and adding the measured current state information of the channel into the Msg3 information, and sending the Msg3 information to the network equipment.

8. The method according to claim 5 or 6, wherein the step of receiving the random access feedback information returned by the network device is preceded by:

sending a random preamble and a data payload to the network device;

wherein, the step of receiving the random access feedback information returned by the network device and acquiring the specific channel state information reference signal pattern information of the user configured by the network device from the random access feedback information comprises:

receiving random access feedback information returned by the network equipment, and acquiring specific channel state information reference signal pattern information of a user configured by the network equipment and uplink resources configured for the user by the network equipment from the random access feedback information;

and sending the measured current state information of the channel to the network equipment through the uplink resource configured for the user by the network equipment.

9. A method performed by a network device in a communication system, the method comprising:

under the condition that channel measurement cannot be performed based on a reference signal of exclusive measurement channel information, configuring system configuration information, wherein the system configuration information is used for informing a user equipment of a signal which needs to be used in the current measurement channel state;

after receiving a random lead code sent by the user equipment, setting a channel state information reporting instruction, and sending random access feedback information carrying the set channel state information reporting instruction to the user equipment, so that the user equipment determines the current state of a measurement channel according to the channel state information reporting instruction;

and receiving the current state information of the channel sent by the user equipment.

10. The method of claim 9, wherein the step of configuring the system configuration information comprises:

configuring a cell-specific channel state information reference signal in the system configuration information to perform channel state measurement;

or,

configuring a synchronous signal in the system configuration information to measure the channel state;

or,

configuring a demodulation reference signal of a broadcast channel in the system configuration information to measure a channel state;

or,

and configuring beam reference signals in the system configuration information to measure the channel state.

11. The method of claim 10, further comprising:

sending downlink data to the user equipment according to a preset downlink transmission mode;

wherein the predetermined downlink transmission mode includes any one of the following situations:

when the network equipment has 2 antenna ports, sending downlink data to the user equipment according to the space frequency block code;

and when the network equipment has 4 antenna ports, switching transmission diversity according to space-frequency block codes and frequency, and transmitting the downlink data to the user equipment.

12. The method of claim 11, wherein before the sending downlink data to the ue, the method further comprises:

confirming that the current state information of the channel was not received or not correctly received.

13. A method performed by a network device in a communication system, the method comprising:

configuring a first signal to perform channel state information measurement under the condition that the channel measurement cannot be performed based on a reference signal of dedicated measurement channel information;

receiving a random lead code sent by user equipment and current state information of a measured channel;

and sending random access feedback to the user equipment.

14. The method of claim 13, wherein the first signal comprises at least one of: cell-specific channel state information reference signals, synchronization signals, demodulation reference signals of broadcast channels, beam reference signals.

15. The method according to claim 13 or 14, characterized in that the method further comprises:

16. The method of claim 15, wherein before the sending downlink data to the ue, the method further comprises:

confirming that the current state information of the channel is not received or not correctly received.

17. A method performed by a network device in a communication system, the method comprising:

sending random access feedback information to user equipment, wherein the random access feedback information comprises: the specific channel state information reference signal pattern information of the user, which is configured by the network device, includes at least one of the following: generating mode, period and time frequency resource position corresponding to specific channel state information reference signal of user;

and receiving the current state information of the measured channel sent by the user equipment.

18. The method of claim 17, wherein the step of sending random access feedback information to the ue is preceded by:

receiving a random lead code sent by the user equipment;

wherein the step of receiving the measured current state information of the channel sent by the user equipment comprises:

and receiving the Msg3 information which is sent by the user equipment and carries the measured current state information of the channel, and acquiring the measured current state information of the channel from the Msg3 information.

19. The method of claim 17, wherein the step of the network device sending random access feedback information to the user equipment is preceded by the step of:

the network equipment receives a random lead code and a data load sent by the user equipment;

and the network equipment configures specific channel state information reference signal pattern information of a user and allocates uplink resources for the user equipment according to the data load.

20. The method of claim 19, wherein the random access feedback information further comprises: and the network equipment allocates uplink resources for the user equipment.

21. The method of claim 20, further comprising:

22. The method of claim 21, wherein before the sending downlink data to the ue, the method further comprises:

23. A user device, comprising: a processor and a computer-readable storage medium storing a computer program, wherein,

the processor, when executing the computer program on the computer readable storage medium, realizes the steps of the method according to any of claims 1-8.

24. A network device, comprising: a processor and a computer-readable storage medium storing a computer program, wherein,

the processor, when executing the computer program on the computer readable storage medium, realizes the steps of the method of any of claims 9-22.