CN106851712B - Message processing method, base station and terminal - Google Patents
Message processing method, base station and terminal Download PDFInfo
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- CN106851712B CN106851712B CN201510881791.8A CN201510881791A CN106851712B CN 106851712 B CN106851712 B CN 106851712B CN 201510881791 A CN201510881791 A CN 201510881791A CN 106851712 B CN106851712 B CN 106851712B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention provides a method for processing messages, a base station and a terminal, wherein the method comprises the following steps: the base station periodically counts the load of the base station; and according to the load condition, periodically broadcasting the corresponding system message. The scheme of the invention can reduce the sending times of the data of the downlink service channel, thereby realizing the purpose of saving energy of the system.
Description
Technical Field
The present invention relates to the field of mobile communications technologies, and in particular, to a method, a base station, and a terminal for processing a message.
Background
To achieve the 5G (5th Generation Mobile Communication System) goal: a 1000 times mobile data traffic increase per area, a 10 to 100 times throughput increase per user, a 10 to 100 times increase in the number of connected devices, a 10 times extension of battery life of low power devices and a 5 times reduction of end-to-end delay, some new wireless technology solutions have to be proposed in 5G. Among them, the use of large bandwidth (500M-1GHz) in the millimeter wave band is the main solution to address the exponential increase of data traffic throughput in the future. Although a large number of idle bands can be used for communication in the millimeter wave range of 10G to 100G, the millimeter wave band has large path loss and serious reflection and scattering phenomena due to propagation in the air, and a new technical scheme must be used to ensure a certain coverage area of a site. Because the wavelength of the millimeter wave frequency band is in the centimeter magnitude, the size of the large-scale antenna can be controlled in a proper range. Meanwhile, the gain of the system can be effectively improved by using a large-scale antenna and a beam forming technology, and a series of problems caused by adverse factors such as large transmission path loss in high-frequency communication are effectively solved. In a 5G deployment scene, because the millimeter wave frequency band propagation path loss is large, the frequency band above 6G is mainly used for constructing a micro base station (Small Cell) for covering a hot spot area in an urban area. And the 3G-6G frequency band is mainly used for constructing a macro base station and is used for solving the coverage problem. For the micro base station in the hot spot area, the number of the resident users may vary greatly with time.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method, a base station and a terminal for processing messages, so as to achieve the purpose of energy saving of a micro base station.
In order to solve the above technical problem, the present invention provides a message processing method, applied to a high frequency multi-antenna system, the method comprising:
the base station periodically counts the load of the base station;
and according to the load condition, periodically broadcasting the corresponding system message.
Further, the method also has the following characteristics: the periodically broadcasting the corresponding system message according to the load condition comprises:
when the load is determined to be lower than a specified threshold, periodically broadcasting a first type of system message, and sending a second type of system message after receiving a system message request; periodically broadcasting the first type of system message and the second type of system message when the load is determined to be higher than the specified threshold.
Further, the method also has the following characteristics: in the process of periodically broadcasting the corresponding system message by the base station, the method further includes:
and if the base station triggers a system message updating event, periodically broadcasting the first type of system message and the second type of system message.
Further, the method also has the following characteristics:
the first system message comprises a main system message block, a partial system message block SIB1 and a SIB2, the partial SIB1 comprises a public land mobile network identity, a tracking area code, a cell identity, cell selection information and time division duplex frame structure setting information;
the second type of system message comprises system messages other than the first type of system message.
Further, the method also has the following characteristics: the base station periodically broadcasts the corresponding system message, which comprises the following steps:
and the base station sends the main system message block on a physical broadcast channel and sends all SIBs on a physical downlink shared channel.
Further, the method also has the following characteristics:
the base station periodically broadcasts the corresponding system message in a mode of wide beam transmission, and each transmitted wide beam comprises a corresponding beam number.
Further, the method also has the following characteristics: the process of the base station periodically broadcasting the corresponding system message comprises the following steps:
the base station scans the transmitting direction of the wave beam circularly, broadcasts a wide wave beam training request message while periodically broadcasting a corresponding system message, wherein the wide wave beam training request message carries base station transmitter mode information, training sequence length information and terminal receiving wave beam mode information;
and receiving a wide beam training request confirmation message returned by the terminal, wherein the wide beam training request confirmation message comprises an optimal transmitting-receiving beam pair identification.
Further, the method also has the following characteristics: further comprising:
the base station measures the transmitting and receiving beam pair corresponding to the optimal transmitting-receiving beam pair identification to obtain the time advance value of the terminal;
and sending a random access response message to the terminal, wherein the random access response message carries the time advance value.
Further, the method also has the following characteristics: further comprising:
the base station sends a beam fine training request message to a terminal in the process of establishing the radio resource control protocol connection;
and receiving a refined training response message of the terminal, wherein the refined training response message carries the transmitting-receiving beam pair identification corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
Further, the method also has the following characteristics:
the base station counts the load of the base station according to the number of accessed users or the occupancy rate of the wireless resource block.
In order to solve the above problem, the present invention further provides a base station, including:
the statistical module is used for periodically counting the load of the base station;
and the processing module is used for periodically broadcasting the corresponding system message according to the load condition.
Further, the base station has the following characteristics:
the processing module, according to the load condition, periodically broadcasting the corresponding system message, including: when the load is determined to be lower than a specified threshold, periodically broadcasting a first type of system message, and sending a second type of system message after receiving a system message request; periodically broadcasting the first type of system message and the second type of system message when the load is determined to be higher than the specified threshold.
Further, the base station has the following characteristics:
the process of the processing module periodically broadcasting the corresponding system message further comprises: if the base station triggers a system message updating event, the base station periodically broadcasts the first type of system message and the second type of system message, wherein the first type of system message comprises a main system message block, a partial system message block SIB1 and a SIB2, and the partial SIB1 comprises a public land mobile network identifier, a tracking area code, a cell identifier, cell selection information and time division duplex frame structure setting information; the second type of system message comprises system messages other than the first type of system message.
Further, the base station has the following characteristics: and the processing module is used for sending the main system message block on a physical broadcast channel and sending all SIBs on a physical downlink shared channel.
Further, the base station has the following characteristics: the processing module broadcasts the corresponding system message periodically in a mode of wide beam transmission, and each transmitted wide beam comprises a corresponding beam number.
Further, the base station has the following characteristics:
the process of the processing module, which broadcasts the corresponding system message periodically, includes: circularly scanning the transmitting direction of beams, and broadcasting a wide beam training request message while periodically broadcasting a corresponding system message, wherein the wide beam training request message carries base station transmitter mode information, training sequence length information and terminal receiving beam mode information; and receiving a wide beam training request confirmation message returned by the terminal, wherein the wide beam training request confirmation message comprises an optimal transmitting-receiving beam pair identification.
Further, the base station has the following characteristics:
the processing module is further configured to measure a transmit-receive beam pair corresponding to the optimal transmit-receive beam pair identifier, and obtain a time advance value of the terminal; and sending a random access response message to the terminal, wherein the random access response message carries the time advance value.
Further, the base station has the following characteristics:
the processing module is further configured to send a beam refinement training request message to the terminal in the process of establishing the radio resource control protocol connection; and receiving a refined training response message of the terminal, wherein the refined training response message carries the transmitting-receiving beam pair identification corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
Further, the base station has the following characteristics:
the statistical module is used for counting the load of the base station according to the number of accessed users or the occupancy rate of the wireless resource block.
In order to solve the above problem, the present invention further provides a method for processing a message, including:
a terminal receives a system message periodically broadcast by a base station;
and selecting a cell or reselecting the cell according to the system message.
Further, the method also has the following characteristics: further comprising:
the terminal receives a wide beam training request message periodically broadcast by the base station;
performing wide beam training to obtain an optimal transmitting-receiving beam pair identifier;
and sending a wide beam training request confirmation message to the base station, wherein the wide beam training request confirmation message carries the optimal transmitting-receiving beam pair identification.
Further, the method also has the following characteristics: the terminal carries out wide beam training to obtain the optimal transmitting-receiving beam pair identification, and the method comprises the following steps:
the terminal calculates the receiving power of the received signal and the signal to interference plus noise ratio according to the base station transmitter mode information, the training sequence length information and the terminal receiving beam mode information carried by the wide beam training request message;
and selecting the base station transmitter mode information with the maximum receiving power or the maximum signal-to-interference-plus-noise ratio value and the corresponding terminal transmitter mode information as the optimal transmitting-receiving beam pair identification.
Further, the method also has the following characteristics: also comprises the following steps of (1) preparing,
the terminal receives a beam refinement training request message of the base station;
measuring the power or signal to interference plus noise ratio corresponding to each reference signal group wave beam;
recording the optimal reference signal group with the maximum value of the power or the signal-to-interference plus noise ratio;
and sending a beam refinement training response message to the base station, wherein the beam refinement training response message carries the transmitting-receiving beam pair identifier corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
In order to solve the above problem, the present invention further provides a terminal, including:
the receiving module is used for receiving the system information periodically broadcast by the base station;
and the processing module is used for selecting the cell or reselecting the cell according to the system message.
Further, the terminal also has the following characteristics: the receiving module is further configured to receive a wide beam training request message periodically broadcast by the base station;
the processing module is further configured to perform wide beam training to obtain an optimal transmit-receive beam pair identifier; and sending a wide beam training request confirmation message to the base station, wherein the wide beam training request confirmation message carries the optimal transmitting-receiving beam pair identification.
Further, the terminal also has the following characteristics:
the processing module performs wide beam training to obtain an optimal transmit-receive beam pair identifier, including: the terminal calculates the receiving power of the received signal and the signal to interference plus noise ratio according to the base station transmitter mode information, the training sequence length information and the terminal receiving beam mode information carried by the wide beam training request message; and selecting the base station transmitter mode information with the maximum receiving power or the maximum signal-to-interference-plus-noise ratio value and the corresponding terminal transmitter mode information as the optimal transmitting-receiving beam pair identification.
Further, the terminal also has the following characteristics:
the receiving module is further configured to receive a beam refinement training request message of the base station;
the processing module is further configured to measure power or a signal-to-interference-plus-noise ratio corresponding to each reference signal group beam; recording the optimal reference signal group with the maximum value of the power or the signal-to-interference plus noise ratio; and sending a beam refinement training response message to the base station, wherein the beam refinement training response message carries the transmitting-receiving beam pair identifier corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
In summary, compared with periodic transmission of broadcast information in LTE (Long Term Evolution), the method, base station and terminal for processing messages provided by the present invention transmit broadcast information in a periodic and on-demand manner when the system load is lower than a certain threshold, so as to reduce the number of times of transmitting downlink service channel data, thereby achieving the purpose of saving energy of the system. The terminal receives the broadcast and the beam training are carried out simultaneously, thereby shortening the time of the beam training. The uplink synchronization time of the terminal is obtained by the base station through the measurement of the optimal transmitting-receiving beam pair, is consistent with the transmitting-receiving beam pair used in the specific service transmission, and is informed to the base station through the random access response. After the RRC connection establishment procedure is initiated, the best transmit-receive beam pair is obtained by performing frequency-based refinement training on the beamlets for subsequent transmission of control signaling and data.
Drawings
Fig. 1 is a flow chart of a method of message processing according to an embodiment of the present invention;
fig. 2 is a hybrid beamforming architecture diagram of an embodiment of the present invention;
FIG. 3 is an interaction flow diagram of a load-based broadcast message according to an embodiment of the present invention;
FIG. 4 is a flow chart of broadcast phase broad beam training of an embodiment of the present invention;
FIG. 5 is a flow chart of frequency based beam refinement training according to an embodiment of the present invention;
FIG. 6 is a flow chart of a method for message processing according to a first embodiment of the invention;
fig. 7 is a flowchart of a message processing method according to a second embodiment of the present invention.
FIG. 8 is a diagram of a base station according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
Fig. 1 is a flowchart of a message processing method according to an embodiment of the present invention, where the method of the present embodiment is applied to a high-frequency multi-antenna system, as shown in fig. 1, the method of the present embodiment includes:
s11, the base station periodically counts the load of the base station;
and S12, according to the load condition, periodically broadcasting the corresponding system message.
The method of the embodiment of the invention can realize the access of a high-frequency multi-antenna load-based terminal, and the process relates to the whole process from the startup of the terminal to the establishment of the service, and mainly comprises the following steps: the method comprises the following steps of wide beam broadcasting of a base station, training of the wide beam, a random access process of a terminal, an RRC connection process and a beam fine training process.
The method specifically comprises the following steps:
in a high-frequency multi-antenna system, a base station selects a group of transceiving chains for broadcasting system messages, and the broadcasting is transmitted in a wide beam mode;
the load of the base station is counted periodically, and the system messages are divided into two categories: the system message of the first kind and the system message of the second kind, the system message of the first kind includes: MIB (Master Information Block) + SIB (System Information Block) 1 (part) + SIB2, and the second type of System messages includes: SIB1 (partial) + SIB3-SIB 13. The first type of system information needs to meet the requirement that the terminal can select a cell for initial residence after acquiring, and is some necessary information for the terminal to acquire downlink synchronization and initiate an uplink message request.
When the load of the base station is lower than a certain threshold, the system message broadcast is sent in a periodic and on-demand mode, the first type of system message is sent periodically, and the second type of system message is sent on-demand; when the load of the base station is higher than a certain threshold or the system message is updated, the periodic mode transmission is recovered, namely the first type system message and the second type system message are transmitted simultaneously.
The base station's broadcast is sent over a wide Beam, each transmitted Beam containing a Beam number (Beam ID).
The base station side circularly scans the transmitting direction of the beam, the terminal side trains the beam in the process of receiving the broadcast message, and the optimal transmitting-receiving beam pair is selected according to the received Power (Power) or signal-to-interference ratio (SINR) judgment; the terminal reversely sends a random access request message along the direction of the optimal transmitting-receiving beam pair; the random access request message contains the optimal transmitting-receiving beam pair, and in the process of initiating the random access, the base station is informed of the optimal transmitting-receiving beam pair Identifier (Identifier, ID for short);
the base station obtains a TA (Timing Advance) value of the terminal through measurement of the best transmit-receive beam pair, and notifies the TA value to the terminal in a random access response message.
After RRC connection establishment is initiated, a base station initiates beam refinement training based on frequency, and reference signals with different frequencies form beams in different directions through phase rotation. The terminal measures the power or SINR of beams in different directions by demodulating the phase rotation of the reference signals with different frequencies, and feeds back the ID of the optimal transmitting-receiving beam pair to the base station side. Finding the best transmit-receive beam pair between the base station and the terminal prepares for the RRC (Radio Resource Control protocol) connection establishment procedure. And after the refined training process of the beam is completed, initiating an RRC connection establishment process, and finally completing the access process of the terminal.
The following describes in detail the implementation of the beam training method for a multi-user high-frequency communication system according to an embodiment of the present invention with reference to the accompanying drawings:
an N x M hybrid beamforming architecture is shown in fig. 2, where there are N transceivers, each connected to M antennas. ABF (Analog Beamforming) operates on M antennas per transceiver, and can be adjusted for the phase of each antenna. DBF (Digital Beamforming) operates N transceivers and may perform different phase operations for different frequency points. The DAC is a Digital-to-Analog Converter (DAC), and the PA (power amplifier) is a power amplifier for each antenna. Antenna 0, Antenna 1, …, and Antenna (M-1) each represent a different Antenna of a transceiver.
Fig. 3 is an interaction flowchart of a load-based broadcast message according to an embodiment of the present invention, as shown in fig. 3, including the following steps:
step S200: the base station periodically judges the load condition of the base station;
the load may specifically be measured by the number of users that have accessed, for example, a default load threshold loadthread is defined as 5, and a value range of loadthread [0, 200 ]. When the number of users accessed by the base station is larger than the LoadThrd, defining the user as high load; otherwise, defining as low load;
optionally, the load may also be defined as an occupancy rate of a radio Block (Resource Block) Resource; if the default load threshold loadthread is 25%, the value range of loadthread [0, 100% ];
step S201: the base station judges whether the load obtained by periodic measurement is greater than a set load threshold or not; if yes, go to step S202; otherwise, turning to S203;
step S202: the base station broadcasts system information to the terminal, specifically comprising the following information elements: MIB + SIBs information; MIB is transmitted on Physical Broadcast Channel (PBCH), SIBs (SIB1, SIB2, …, SIB13) are transmitted on Physical Downlink Shared Channel (PDSCH); then, the process goes to step S206 to wait for an external system message update trigger event.
Step S203: a base station broadcasts a system message to a terminal, and a cell only contains a first type of system message; then, the process goes to step S204.
The first type of system message comprises: MIB + SIB1 (part) + SIB 2. The specific information elements in the MIB comprise: downlink system bandwidth, antenna configuration, PHICH (Physical Hybrid ARQ Indicator Channel, Physical HARQ (Hybrid Automatic Repeat Request) Indicator Channel) setting, and system frame number; the partial SIB1 information includes: PLMN (Public Land Mobile Network) ID, Tracking Area Code (TAC), cell ID, cell selection information, and TDD (Time Division duplex) frame structure setting;
the second type of system message includes: SIB1 (partial) + SIB3-SIB 13. SIB1 (part) includes: SIB3-SIB13 scheduling and mapping information of system message, system message ValueTag (flag value); the SIB3 mainly includes cell reselection common information, cell reselection priority, and intra-frequency cell reselection parameters, the SIB4 mainly includes an intra-frequency neighbor list and offset parameters, and the SIB5 includes an inter-frequency neighbor list and offset parameters.
Step S204, the terminal receives the first system information and completes the cell selection process; after the cell selection is completed, initiating SIBs information request to the base station to which the cell belongs;
step S205: after receiving the SIB information request message from the terminal, the base station sends a SIBs information response message on a Physical Downlink Shared Channel (PDSCH), where the message specifically includes information elements: a second type of system message; then go to step S206;
step S206: in the periodic broadcasting process, if the base station triggers a system message updating event, the periodic system message broadcasting process is immediately recovered;
step S207, the base station sends broadcast messages periodically, MIB information on PBCH and SIBs information on PDSCH.
Fig. 4 is a flowchart of broad beam training in a broadcast phase according to an embodiment of the present invention, as shown in fig. 4, including the following steps:
step S300: the base station scans the transmitting direction of the beam circularly, broadcasts a wide beam training request message to the terminal while periodically broadcasting the corresponding system message,
in this embodiment, the broadcast wide beam training request message may be included in the "SIBs information response" in S205 at the time of low load in fig. 3, or included in the system message broadcast in steps S202, S207 at the time of high load.
The specific information element of the wide beam training request message includes: base station transmitter mode (transceiver number, sector number), training sequence length, and UE receive beam pattern. The base station transmitter mode specifically refers to a transmitter (one of Transceiver 0, Transceiver 1, … and Transceiver N-1) used for broadcasting and a corresponding transmitting Sector number (one of Sector numbers in Sector 0, Sector 1, … and Sector 8); the training sequence length refers to the number of repeated transmissions in units of sub-frames; the reception beam pattern of the UE refers to: the UE receives by an omnidirectional antenna or by a wide-beam antenna array phase rotation mode;
the base station broadcasts a broad beam training request to the terminal, and the content of the mode cell of the transmitter of the base station is { (transceiver number, sector number 0) }; go through { (transceiver number, sector number n) }.
Step S301: the UE calculates the received power to Interference Noise Ratio (SINR) of the received Signal according to various base station transmitter modes, training sequence lengths and UE receiving beam modes indicated by the base station side, and selects the base station antenna transceiver mode with the maximum received power or SINR value;
step S302, the UE sends a wide beam training request confirmation message to the base station, wherein the wide beam training request confirmation message specifically comprises the number { transceiver number, optimal sector number } of the optimal mode of the transceiver and the corresponding measured value.
Fig. 5 is a flowchart of a frequency-based beam refinement training according to an embodiment of the present invention, as shown in fig. 5, including the following steps:
step S400: the base station sends a beam fine training request to the UE;
the specific cells include: base station transmitter mode, training sequence length, and UE reception mode. Wherein the base station transmitter mode comprises: reference signal set number k and corresponding phase rotation parameter
αk＝(α0,k,α1,k,...,αN-1,k) (ii) a Each set of reference signals is mapped to a beam ID.
Step S401: the UE measures the power or SINR corresponding to each RS (Reference Signal) group beam, and records the Reference Signal group (corresponding to a beam ID) corresponding to the maximum measurement value;
step S402: the UE locally stores the beam ID corresponding to the maximum value of the power or the SINR;
step S403: UE sends the fine training response message of the wave beam to the base station, and the message cell comprises: the beam ID corresponding to the best set of reference signals and the corresponding measured power or SINR value.
Fig. 6 is a flowchart of a message processing method according to a first embodiment of the present invention, and as shown in fig. 6, the method of the present embodiment includes the following steps:
step S500: the base station periodically judges the load of the cell, the measurement of the specific load can use the number of accessed users or the RB resource occupancy rate, and the load judgment is low;
step S501: a base station sends a first type system message;
wherein, the MIB is transmitted on PBCH, and the partial SIB1 and SIB2 are transmitted on PDSCH.
Step S502: the UE judges whether the signal quality of the current cell is greater than a cell selection threshold provided in the first type system message or not through measurement according to the information in the first type system message; if the cell selection threshold is larger than the cell selection threshold, selecting the cell to reside;
wherein the first type of system message carries a broadcast broad beam training request.
Step S503: the UE performs wide beam training to obtain an optimal transmit-receive beam pair ID (the specific flow refers to FIG. 4);
step S504: the UE sends SIBs information request message along the reverse direction of the best transmitting-receiving beam pair according to the reciprocity of the uplink and downlink beams, and informs the base station of the ID of the best transmitting-receiving beam pair;
step S505: after receiving the SIBs request message, the base station sends SIBs information response message in the downlink physical shared channel, the cell contains the second system message;
step S506: the UE performs cell reselection flow according to the information in the second type system message SIB3-SIB5, and performs cell selection again;
step S507: after the UE reselects the cell, initiating a random access request message along the direction of the optimal transmitting-receiving beam pair;
step S508: the base station estimates a TA value by measuring an eNB reception and transmission time difference through measurement of an optimal transmission-reception beam pair based on a PRACH (Physical Random Access Channel), and notifies the UE in a Random Access response;
step S509: after the UE receives the random access response message, initiating an RRC connection establishment process between the UE and the base station, and enabling the UE to enter an RRC connection state;
step S510: the base station sends a refined training request message of the wave beam to the UE;
step S511: a refined training response message of the beam returned by the UE to the base station (see fig. 5 for a specific process);
optionally, the beam refinement training may be implemented by adopting other processes such as beam transmission direction circulation, CSI measurement transmission to different directions, and the like;
step S512: and after the refined training process of the wave beam is finished, the base station and the UE continue to finish the initiating process of the service.
Fig. 7 is a flowchart of a message processing method according to a second embodiment of the present invention, and as shown in fig. 7, the method according to the present embodiment includes the following steps:
step S600: the base station periodically judges the load of the cell, the measurement of the specific load can use the number of accessed users or the RB resource occupancy rate, and the load judgment is high;
step S601: the base station sends MIB information on a downlink physical broadcast channel and SIBs (SIB1-SIB13) information on a downlink physical shared channel;
step S602: the UE performs cell selection and reselection according to the information in the SIB 1;
step S603: the UE performs broadcast wide beam training to obtain an optimal transmit-receive beam pair ID (see fig. 4 for a specific process);
step S604: the UE sends a random access request message along the reverse direction of the optimal transmitting-receiving beam pair according to the reciprocity of the uplink and downlink beams, and informs the optimal transmitting-receiving beam pair ID to the base station;
step S605: the base station estimates the TA value by measuring the eNB receive and transmit time difference based on the PRACH channel by measuring the best transmit-receive beam pair, and informs the UE in a random access response;
step S606: after the UE receives the random access response message, initiating an RRC connection establishment process between the UE and the base station, and enabling the UE to enter an RRC connection state;
step S607: the base station sends a refined training request message of the wave beam to the UE;
step S608: a refined training response message of the beam returned by the UE to the base station (see fig. 5 for a specific process);
optionally, the beam refinement training may be implemented by adopting other processes such as beam transmission direction circulation, CSI measurement transmission to different directions, and the like;
step S609: and after the refined training process of the wave beam is finished, the base station and the UE continue to finish the initiating process of the service.
Fig. 8 is a schematic diagram of a base station according to an embodiment of the present invention, and as shown in fig. 8, the base station according to the embodiment includes:
the statistical module is used for periodically counting the load of the base station;
and the processing module is used for periodically broadcasting the corresponding system message according to the load condition.
In a preferred embodiment, the processing module, according to the load condition, periodically broadcasting the corresponding system message, may include: when the load is determined to be lower than a specified threshold, periodically broadcasting a first type of system message, and sending a second type of system message after receiving a system message request; periodically broadcasting the first type of system message and the second type of system message when the load is determined to be higher than the specified threshold.
In a preferred embodiment, the process of periodically broadcasting the corresponding system message by the processing module further includes: if the base station triggers a system message updating event, the base station periodically broadcasts the first type of system message and the second type of system message, wherein the first type of system message comprises a main system message block, a partial system message block SIB1 and a SIB2, and the partial SIB1 comprises a public land mobile network identifier, a tracking area code, a cell identifier, cell selection information and time division duplex frame structure setting information; the second type of system message comprises system messages other than the first type of system message.
In a preferred embodiment, the processing module sends the primary system message block on a physical broadcast channel, and sends all SIBs on a physical downlink shared channel.
In a preferred embodiment, the processing module periodically broadcasts the corresponding system message by means of wide beam transmission, and each transmitted wide beam includes a corresponding beam number.
In a preferred embodiment, the process of periodically broadcasting the corresponding system message by the processing module includes: circularly scanning the transmitting direction of beams, and broadcasting a wide beam training request message while periodically broadcasting a corresponding system message, wherein the wide beam training request message carries base station transmitter mode information, training sequence length information and terminal receiving beam mode information; and receiving a wide beam training request confirmation message returned by the terminal, wherein the wide beam training request confirmation message comprises an optimal transmitting-receiving beam pair identification.
The optimal transmit-receive beam pair identification is carried in a wide beam training request acknowledgment message. However, in a specific implementation, the content in the wide beam training request confirmation message is carried by other messages, and the wide beam training request confirmation message is not sent separately. For example, at low load, as in S504 in fig. 6, the optimal transmit-receive beam pair identification is carried by the SIBs information request message; at high load, the best transmit-receive beam pair identity is carried by the random access request message, as in S604 in fig. 7.
In a preferred embodiment, the processing module is further configured to measure a transmit-receive beam pair corresponding to the optimal transmit-receive beam pair identifier, and obtain a time advance value of the terminal; and sending a random access response message to the terminal, wherein the random access response message carries the time advance value.
In a preferred embodiment, the processing module is further configured to send a beam refinement training request message to the terminal in a process of establishing a radio resource control protocol connection; and receiving a refined training response message of the terminal, wherein the refined training response message carries the transmitting-receiving beam pair identification corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
In a preferred embodiment, the statistical module is used for counting the load of the base station according to the number of accessed users or the occupancy rate of the wireless resource block.
Fig. 9 is a schematic diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 9, the terminal according to the embodiment includes:
the receiving module is used for receiving the system information periodically broadcast by the base station;
and the processing module is used for selecting the cell or reselecting the cell according to the system message.
In a preferred embodiment, the receiving module is further configured to receive a wide beam training request message periodically broadcast by the base station;
the processing module is further configured to perform wide beam training to obtain an optimal transmit-receive beam pair identifier; and sending a wide beam training request confirmation message to the base station, wherein the wide beam training request confirmation message carries the optimal transmitting-receiving beam pair identification.
In a preferred embodiment, the processing module, performing wide beam training to obtain an optimal transmit-receive beam pair identifier, includes: the terminal calculates the receiving power of the received signal and the signal to interference plus noise ratio according to the base station transmitter mode information, the training sequence length information and the terminal receiving beam mode information carried by the wide beam training request message; and selecting the base station transmitter mode information with the maximum receiving power or the maximum signal-to-interference-plus-noise ratio value and the corresponding terminal transmitter mode information as the optimal transmitting-receiving beam pair identification.
In a preferred embodiment, the receiving module is further configured to receive a beam refinement training request message of the base station;
the processing module is further configured to measure power or a signal-to-interference-plus-noise ratio corresponding to each reference signal group beam; recording the optimal reference signal group with the maximum value of the power or the signal-to-interference plus noise ratio; and sending a beam refinement training response message to the base station, wherein the beam refinement training response message carries the transmitting-receiving beam pair identifier corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
The foregoing is only a preferred embodiment of the present invention, and naturally there are many other embodiments of the present invention, and those skilled in the art can make various corresponding changes and modifications according to the present invention without departing from the spirit and the essence of the present invention, and these corresponding changes and modifications should fall within the scope of the appended claims.
Claims (20)
1. A message processing method is applied to a high-frequency multi-antenna system and comprises the following steps:
the base station periodically counts the load of the base station;
when the load is determined to be lower than a specified threshold, periodically broadcasting a first type of system message, and sending a second type of system message after receiving a system message request; periodically broadcasting the first type of system message and the second type of system message when the load is determined to be higher than the specified threshold;
the first system message comprises a main system message block, a partial system message block SIB1 and a SIB2, the partial SIB1 comprises a public land mobile network identity, a tracking area code, a cell identity, cell selection information and time division duplex frame structure setting information;
the second type of system message comprises system messages other than the first type of system message.
2. The method as claimed in claim 1, wherein the step of periodically broadcasting the corresponding system message by the base station further comprises:
and if the base station triggers a system message updating event, periodically broadcasting the first type of system message and the second type of system message.
3. The method of claim 1, wherein the base station periodically broadcasts the corresponding system message, comprising:
and the base station sends the main system message block on a physical broadcast channel and sends all SIBs on a physical downlink shared channel.
4. The method of any one of claims 1-3, wherein:
the base station periodically broadcasts the corresponding system message in a mode of wide beam transmission, and each transmitted wide beam comprises a corresponding beam number.
5. The method of any one of claims 1-3, wherein: the process of the base station periodically broadcasting the corresponding system message comprises the following steps:
the base station scans the transmitting direction of the wave beam circularly, broadcasts a wide wave beam training request message while periodically broadcasting a corresponding system message, wherein the wide wave beam training request message carries base station transmitter mode information, training sequence length information and terminal receiving wave beam mode information;
and receiving a wide beam training request confirmation message returned by the terminal, wherein the wide beam training request confirmation message comprises an optimal transmitting-receiving beam pair identification.
6. The method of claim 5, wherein: further comprising:
the base station measures the transmitting and receiving beam pair corresponding to the optimal transmitting-receiving beam pair identification to obtain the time advance value of the terminal;
and sending a random access response message to the terminal, wherein the random access response message carries the time advance value.
7. The method of claim 6, wherein: further comprising:
the base station sends a beam fine training request message to a terminal in the process of establishing the radio resource control protocol connection;
and receiving a refined training response message of the terminal, wherein the refined training response message carries the transmitting-receiving beam pair identification corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
8. The method of claim 1, wherein:
the base station counts the load of the base station according to the number of accessed users or the occupancy rate of the wireless resource block.
9. A base station, comprising:
the statistical module is used for periodically counting the load of the base station;
a processing module, configured to periodically broadcast a corresponding system message according to the load condition, including: when the load is determined to be lower than a specified threshold, periodically broadcasting a first type of system message, and sending a second type of system message after receiving a system message request; periodically broadcasting the first type of system message and the second type of system message when the load is determined to be higher than the specified threshold;
wherein the first type system message comprises a main system message block, a partial system message block SIB1, and a SIB2, the partial SIB1 comprises a public land mobile network identity, a tracking area code, a cell identity, cell selection information, and time division duplex frame structure setting information; the second type of system message comprises system messages other than the first type of system message.
10. The base station of claim 9,
the process of the processing module periodically broadcasting the corresponding system message further comprises: and if the base station triggers a system message updating event, periodically broadcasting the first type of system message and the second type of system message.
11. The base station of claim 10,
and the processing module is used for sending the main system message block on a physical broadcast channel and sending all SIBs on a physical downlink shared channel.
12. The base station of any of claims 9-11,
the processing module broadcasts the corresponding system message periodically in a mode of wide beam transmission, and each transmitted wide beam comprises a corresponding beam number.
13. The base station of any of claims 9-11,
the process of the processing module, which broadcasts the corresponding system message periodically, includes: circularly scanning the transmitting direction of beams, and broadcasting a wide beam training request message while periodically broadcasting a corresponding system message, wherein the wide beam training request message carries base station transmitter mode information, training sequence length information and terminal receiving beam mode information; and receiving a wide beam training request confirmation message returned by the terminal, wherein the wide beam training request confirmation message comprises an optimal transmitting-receiving beam pair identification.
14. The base station of claim 13,
the processing module is further configured to measure a transmit-receive beam pair corresponding to the optimal transmit-receive beam pair identifier, and obtain a time advance value of the terminal; and sending a random access response message to the terminal, wherein the random access response message carries the time advance value.
15. The base station of claim 14,
the processing module is further configured to send a beam refinement training request message to the terminal in the process of establishing the radio resource control protocol connection; and receiving a refined training response message of the terminal, wherein the refined training response message carries the transmitting-receiving beam pair identification corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
16. The base station of claim 9,
the statistical module is used for counting the load of the base station according to the number of accessed users or the occupancy rate of the wireless resource block.
17. A method of message processing, comprising:
a terminal receives a system message periodically broadcast by a base station;
selecting a cell or reselecting a cell according to the system message;
the terminal receives a wide beam training request message periodically broadcast by the base station;
performing wide beam training to obtain an optimal transmitting-receiving beam pair identifier;
sending a wide beam training request confirmation message to the base station, carrying the optimal transmit-receive beam pair identification;
the method for the terminal to perform the wide beam training and obtain the optimal transmit-receive beam pair identifier includes:
the terminal calculates the receiving power of the received signal and the signal to interference plus noise ratio according to the base station transmitter mode information, the training sequence length information and the terminal receiving beam mode information carried by the wide beam training request message;
and selecting the base station transmitter mode information with the maximum receiving power or the maximum signal-to-interference-plus-noise ratio value and the corresponding terminal transmitter mode information as the optimal transmitting-receiving beam pair identification.
18. The method of claim 17, wherein: also comprises the following steps of (1) preparing,
the terminal receives a beam refinement training request message of the base station;
measuring the power or signal to interference plus noise ratio corresponding to each reference signal group wave beam;
recording the optimal reference signal group with the maximum value of the power or the signal-to-interference plus noise ratio;
and sending a beam refinement training response message to the base station, wherein the beam refinement training response message carries the transmitting-receiving beam pair identifier corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
19. A terminal, comprising:
the receiving module is used for receiving the system information periodically broadcast by the base station;
the processing module is used for selecting a cell or reselecting the cell according to the system message;
the receiving module is further configured to receive a wide beam training request message periodically broadcast by the base station;
the processing module is further configured to perform wide beam training to obtain an optimal transmit-receive beam pair identifier; sending a wide beam training request confirmation message to the base station, carrying the optimal transmit-receive beam pair identification;
the processing module performs wide beam training to obtain an optimal transmit-receive beam pair identifier, including: the terminal calculates the receiving power of the received signal and the signal to interference plus noise ratio according to the base station transmitter mode information, the training sequence length information and the terminal receiving beam mode information carried by the wide beam training request message; and selecting the base station transmitter mode information with the maximum receiving power or the maximum signal-to-interference-plus-noise ratio value and the corresponding terminal transmitter mode information as the optimal transmitting-receiving beam pair identification.
20. The terminal of claim 19,
the receiving module is further configured to receive a beam refinement training request message of the base station;
the processing module is further configured to measure power or a signal-to-interference-plus-noise ratio corresponding to each reference signal group beam; recording the optimal reference signal group with the maximum value of the power or the signal-to-interference plus noise ratio; and sending a beam refinement training response message to the base station, wherein the beam refinement training response message carries the transmitting-receiving beam pair identifier corresponding to the optimal reference signal group and the corresponding measured power or signal-to-interference-plus-noise ratio.
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| CN201510881791.8A CN106851712B (en) | 2015-12-03 | 2015-12-03 | Message processing method, base station and terminal |
| PCT/CN2016/085353 WO2016197958A1 (en) | 2015-12-03 | 2016-06-08 | Message processing method, base station and terminal |
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| CN201510881791.8A CN106851712B (en) | 2015-12-03 | 2015-12-03 | Message processing method, base station and terminal |
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| CN107645767A (en) * | 2016-07-20 | 2018-01-30 | 中兴通讯股份有限公司 | The measuring method and device of Timing Advance |
| CN108243496B (en) * | 2016-12-26 | 2020-04-07 | 工业和信息化部电信研究院 | Frame structure and mobile communication method |
| CN108401297B (en) * | 2017-02-06 | 2023-10-24 | 北京三星通信技术研究有限公司 | Random access method and terminal equipment |
| US10305562B2 (en) * | 2017-09-28 | 2019-05-28 | Apple Inc. | Different sector rotation speeds for post-amble processing of a beam forming packet |
| CN110475367B (en) * | 2018-05-10 | 2021-08-24 | 维沃移动通信有限公司 | Transmission method, mobile communication terminal and network side equipment |
| CN117835259A (en) * | 2019-05-16 | 2024-04-05 | 北京三星通信技术研究有限公司 | Beam management method, beam management device, electronic equipment and computer readable storage medium |
| CN110492954B (en) * | 2019-07-01 | 2021-07-27 | 中国联合网络通信集团有限公司 | Base station control method, first base station and second base station |
| CN112671439A (en) * | 2019-10-16 | 2021-04-16 | 上海华为技术有限公司 | Communication method and network equipment based on beam forming |
| CN114189852B (en) * | 2021-12-01 | 2024-02-02 | 浙江大学 | Downlink multiuser beam alignment and data transmission method for millimeter wave hidden communication |
| CN114630391B (en) * | 2022-03-31 | 2024-03-01 | 中国电信股份有限公司 | Communication method, device and system under network co-establishment sharing scene and sharing base station |
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| DK2656664T3 (en) * | 2010-12-20 | 2017-04-18 | ERICSSON TELEFON AB L M (publ) | Methods and Nodes for Setting System Parameter Values Used in a Wireless Communication System |
| CN102833789B (en) * | 2012-09-18 | 2015-04-15 | 武汉邮电科学研究院 | Load balancing method for LET (Long Term Evolution) network |
| CN103987105A (en) * | 2013-02-08 | 2014-08-13 | 华为技术有限公司 | Method for transmitting cellular-network load information and related devices |
| US9148820B2 (en) * | 2013-03-29 | 2015-09-29 | Nokia Solutions And Networks Oy | Idle load balancing during random access procedure |
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