CN115442821B - Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal - Google Patents
Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal Download PDFInfo
- Publication number
- CN115442821B CN115442821B CN202110626792.3A CN202110626792A CN115442821B CN 115442821 B CN115442821 B CN 115442821B CN 202110626792 A CN202110626792 A CN 202110626792A CN 115442821 B CN115442821 B CN 115442821B
- Authority
- CN
- China
- Prior art keywords
- coverage enhancement
- terminal
- access
- preset time
- configuration information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 85
- 238000004891 communication Methods 0.000 title claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 70
- 238000013475 authorization Methods 0.000 claims description 17
- 238000004590 computer program Methods 0.000 claims description 16
- 230000004044 response Effects 0.000 claims description 13
- 230000000737 periodic effect Effects 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000001228 spectrum Methods 0.000 abstract description 5
- 230000006870 function Effects 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000023402 cell communication Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
A communication method based on coverage enhancement, a device, a storage medium, a network device and a terminal, wherein the method comprises the steps of sending a configuration message to the terminal during the period that the terminal applying the coverage enhancement access accesses a current cell, wherein the configuration message is used when the terminal accesses the current cell next time, the current cell supports the coverage enhancement access in a plurality of preset time periods, and does not support the coverage enhancement access in other times except the preset time periods. By the scheme, the spectrum efficiency can be effectively improved, a large number of resource configurations allowing repeated transmission are prevented from being configured for coverage enhancement, and resource waste is avoided.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a coverage enhancement-based communication method and apparatus, a storage medium, a network device, and a terminal.
Background
In the existing cell communication, the current serving cell may be configured to support coverage enhancement, for example, to configure a preamble that allows a terminal in an area with poor signal (for example, signal quality exceeding 10db than the signal quality at the cell edge) to access the cell through repeated random access, and after the cell receives the signal of the terminal, the response message sent to the terminal needs to be repeated multiple times, so as to ensure that the terminal can accurately receive the signal. When the system message of a cell is not configured with parameters related to coverage enhancement, a terminal outside the coverage of the cell cannot access the cell by using normal random access resources.
However, the conventional cell either supports coverage enhancement or does not support coverage enhancement, which cannot effectively achieve both data transmission of a User Equipment (UE) in a coverage enhancement area and data transmission of a normal access UE, and if a cell is configured as a cell supporting coverage enhancement, a large number of resource configurations allowing repeated transmission need to be configured, which may cause resource waste.
Disclosure of Invention
The technical problem solved by the invention is how to effectively consider the data transmission of the UE in the coverage enhancement area and the data transmission of the normally accessed UE.
In order to solve the problems, the embodiment of the invention provides a communication method based on coverage enhancement, which comprises the steps of sending a configuration message to a terminal applying coverage enhancement access to be used when the terminal accesses a current cell next time, wherein the current cell supports the coverage enhancement access in a plurality of preset time periods, and does not support the coverage enhancement access in other times except the preset time periods.
Optionally, the configuration information indicates one or more preset time periods in a future period, so that the terminal accesses the current cell in the preset time indicated by the configuration information.
Optionally, the configuration information indicates a time corresponding to the preset time period, where the preset time period has periodicity, so that the terminal accesses the current cell in the preset time period indicated by the configuration information.
Optionally, the configuration information includes coverage enhancement parameters of the current cell for allowing the terminal to perform coverage enhancement access, the terminal stores the received coverage enhancement parameters, the method further includes receiving an access request or transmission data sent by the terminal based on the coverage enhancement parameters stored by the terminal, analyzing the access request or the transmission data according to local coverage enhancement parameters, and sending a response to the terminal when the analysis is successful, wherein the local coverage enhancement parameters are the coverage enhancement parameters configured to the terminal.
Optionally, the analyzing the access request or the transmission data according to the local coverage enhancement parameters further includes sending an update instruction to the terminal when the analysis fails or the local coverage enhancement parameters cannot be acquired, so that the terminal updates the coverage enhancement parameters stored by the terminal according to the update instruction.
Optionally, the coverage enhancement parameters include common coverage enhancement parameters and/or coverage enhancement parameters specific to the terminal.
Optionally, all or part of the content of the terminal-specific coverage enhancement parameter is carried by configuration authorization information.
Optionally, all or part of the content in the common coverage enhancement parameter is carried by the first system message.
Optionally, the method further comprises broadcasting the first system message or the second system message in the preset time period, and broadcasting the second system message in other time except the preset time periods, wherein the second system message does not comprise the content of the public coverage enhancement parameters.
Optionally, the method further comprises broadcasting the first system message when the terminal initially accesses the cell.
Optionally, the coverage enhancement parameters specific to the terminal include coverage enhancement parameters corresponding to different coverage enhancement levels, so that the terminal determines the coverage enhancement parameters for sending the access request or the transmission data according to the coverage enhancement level of the terminal.
The embodiment of the invention also provides a communication method based on coverage enhancement, which is executed by a terminal applying the coverage enhancement access, and comprises the steps of receiving configuration information sent by a target cell after the target cell is accessed, executing access operation by using the configuration information when the target cell is accessed next time, wherein the target cell supports the coverage enhancement access in a plurality of preset time periods, and does not support the coverage enhancement access in other times except the preset time periods.
Optionally, the configuration information indicates one or more preset time periods in a future period, and the re-accessing the target cell according to the configuration information includes accessing the target cell in the preset time indicated by the configuration information.
Optionally, the configuration information indicates the preset time period, the preset time period has periodicity, and the re-accessing the target cell according to the configuration information includes accessing the target cell in the preset time indicated by the configuration information.
Optionally, the configuration information comprises coverage enhancement parameters of the target cell for allowing the terminal to perform coverage enhancement access, and after receiving the configuration information sent by the target cell, the method further comprises storing the received coverage enhancement parameters, sending an access request or transmission data to the target cell based on the stored coverage enhancement parameters, and receiving a response sent by the target cell.
Optionally, when receiving an update instruction sent by the target cell, the method further comprises updating the coverage enhancement parameters stored by the terminal according to the update instruction, wherein the update instruction indicates that the target cell fails to analyze the access request or the transmission data, or the update instruction indicates that the target cell cannot acquire the coverage enhancement parameters local to the target cell.
Optionally, the method further comprises updating the coverage enhancement parameters stored by the terminal if the terminal does not receive a response sent by the target cell within a certain time after sending the access request or transmitting data.
Optionally, the coverage enhancement parameters include common coverage enhancement parameters and/or coverage enhancement parameters specific to the terminal.
Optionally, all or part of the content of the terminal-specific coverage enhancement parameter is carried by configuration authorization information.
Optionally, all or part of the content in the common coverage enhancement parameter is carried by the first system message.
Optionally, the target cell broadcasts the first system message or the second system message in the preset time, and broadcasts the second system message in other time except the preset time, wherein the second system message does not include the content of the public coverage enhancement parameter.
Optionally, the method further comprises receiving a first system message broadcast by the target cell when the target cell is initially accessed.
Optionally, the coverage enhancement parameters specific to the terminal comprise coverage enhancement parameters corresponding to different coverage enhancement levels, and the method further comprises determining the coverage enhancement parameters for sending the access request or the transmission data according to the coverage enhancement levels of the terminal.
The embodiment of the invention also provides a communication device based on coverage enhancement, which comprises a configuration message sending module, a coverage enhancement access module and a coverage enhancement access module, wherein the configuration message sending module is used for sending a configuration message to a terminal applying the coverage enhancement access to the current cell, wherein the configuration message is used when the terminal accesses the current cell next time, the current cell supports the coverage enhancement access in a plurality of preset time periods, and does not support the coverage enhancement access in other times except the preset time periods.
The embodiment of the invention also provides a communication device based on coverage enhancement, which is arranged at a terminal applying the coverage enhancement access, and comprises a configuration information receiving module, an access module and a communication module, wherein the configuration information receiving module is used for receiving the configuration information sent by a target cell after the target cell is accessed, the access module is used for executing access operation by using the configuration information when the target cell is accessed next time, the target cell supports the coverage enhancement access in a plurality of preset time periods, and does not support the coverage enhancement access in other times except the preset time periods.
The embodiment of the invention also provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the coverage enhancement based communication methods.
The embodiment of the invention also provides a network device, which comprises the coverage enhancement-based communication device or comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes any step of the coverage enhancement-based communication method when running the computer program.
The embodiment of the invention also provides a terminal, which comprises the device based on coverage enhancement communication or comprises a memory and a processor, wherein the memory stores a computer program which can be run on the processor, and the processor executes any step of the method based on coverage enhancement communication when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
According to the communication method based on coverage enhancement provided by the embodiment of the invention, the cell can apply the coverage enhancement technology in a time division mode, and when the terminal applying coverage enhancement access is accessed to the cell, a configuration message is sent to the terminal for the next time the terminal applies the coverage enhancement access, so that the data transmission of the terminal in the coverage enhancement area and the data transmission of the normally accessed UE can be effectively considered. Therefore, the spectrum efficiency can be effectively improved, a large number of resource configurations which allow repeated transmission are required to be configured for coverage enhancement, and resource waste is avoided.
Further, when the terminal applying the coverage enhancement technology accesses the cell in a time division manner, the cell informs the terminal of when to start the coverage enhancement function in a period of time in the future through the configuration information, so that the terminal can access the cell when the coverage enhancement function is started, and data transmission with the cell is completed.
Further, the current cell may maintain two sets of system messages, one set of system messages (i.e., the second system message) for the normally covered terminal to access, and update if necessary, and the other set of system messages for the application coverage enhancement access (i.e., the first system message) may be maintained unchanged for a long time, so that when receiving an access request or transmission data sent by the terminal based on the coverage enhancement parameters, the cell may parse the access request or transmission data based on the first system message maintained by the cell. Further, if the current cell cannot analyze the access request or the transmission data sent by the terminal based on the coverage enhancement parameter, the coverage enhancement parameter included in the first system message maintained by the current cell may not be consistent with the coverage enhancement parameter stored by the terminal, and the current cell may send an update instruction to the terminal to instruct the terminal to update the coverage enhancement parameter stored by the current cell. Further, after the coverage enhancement parameters are configured to the terminal by the current cell, the configured coverage enhancement parameters are stored locally, and if the current cell cannot acquire the local coverage enhancement parameters, the coverage enhancement parameters of the current cell are updated, and the terminal is informed through an update instruction.
Furthermore, the current cell can configure multiple sets of coverage enhancement parameters corresponding to multiple coverage enhancement levels through configuration authorization information, and the terminal can select the corresponding coverage enhancement parameters for sending an access request or transmitting data based on the coverage enhancement level of the terminal.
Drawings
Fig. 1 is a schematic flow chart of a communication method based on coverage enhancement according to an embodiment of the present invention;
FIG. 2 is a flow chart of a second method for supporting coverage enhancement communication according to an embodiment of the present invention;
FIG. 3 is a flow chart of a third method for supporting coverage enhancement communications according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a communication device based on coverage enhancement according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of another coverage enhancement-based communication device according to an embodiment of the present invention;
Detailed Description
As described in the background art, the conventional cell either supports coverage enhancement or does not support coverage enhancement, which cannot effectively consider data transmission of the UE in the coverage enhancement area and data transmission of the UE in normal access, and if a cell is configured as a cell supporting coverage enhancement, a large number of resource configurations allowing repeated transmission need to be configured, which may cause resource waste.
In order to solve the above-mentioned problems, please refer to fig. 1, fig. 1 is a flowchart of a communication method based on coverage enhancement according to an embodiment of the present invention, the communication method may be performed by a network device (such as a base station (gNB, eNB, etc.) or an Access Point (AP for short)), and the method includes:
step S101, during the period that a terminal applying coverage enhancement access accesses a current cell, a configuration message is sent to the terminal, wherein the configuration message is used when the terminal accesses the current cell next time, the current cell supports coverage enhancement access in a plurality of preset time periods, and coverage enhancement access is not supported in other times except the preset time periods.
A terminal to which coverage enhancement access (hereinafter referred to as a terminal) is applied for a certain cell is distinguished from a terminal that accesses the cell through a normal access procedure. The terminal may be a User Equipment (UE) such as a computer, a mobile phone, an ammeter, a water meter, etc.
Alternatively, the terminals applying the coverage enhancement access cell may be terminals in environments where network signals are poor (such as a basement or an elevator, etc.), or terminals that are far away from the base station or the access point of the cell (such as when at the edge of the cell), and these terminals may not be able to access the cell through a common access procedure, and the cell is required to initiate the coverage enhancement access function to communicate with the terminals to complete the access.
The current cell may be a cell of an existing network such as a third Generation mobile communication technology (3 rd-Generation, abbreviated as 3G), a third Generation mobile communication technology (4 th-Generation, abbreviated as 4G), a fifth Generation mobile communication technology (5 th-Generation, abbreviated as 3G), and an internet of things (Internet of things, abbreviated as IoT). It should be noted that the method described in the embodiment of the present invention may also be applicable to future networks such as 6G and 7G.
The current cell support coverage enhancement may include at least one of a current cell support synchronization/broadcast channel coverage enhancement, a current cell support random access channel coverage enhancement, and a downlink control channel coverage enhancement. The specific support manner can be found in the existing communication protocol, and the detailed description is omitted here.
The configuration message is a message sent by the current cell to the terminal, and the message is used for the terminal to reapply coverage enhancement to access the current cell when the terminal needs to communicate with the current cell next time.
Optionally, the configuration message may be carried in at least one signaling form selected from a system message (such as SIB 1), a radio resource control (Radio Resource Control, abbreviated as RRC) signaling, a medium access control unit (Medium Access Control Control Element, abbreviated as MAC CE), a Configuration Grant (CG) information, and the like.
Optionally, the configuration message is used for indicating at least one of a time when the current cell supports coverage enhancement access and a time domain/frequency domain resource available to the terminal in a future period, a common configuration parameter of the current cell, such as one or more of a random access parameter, a common Physical Uplink SHARED CHANNEL (PUSCH) configuration, a common Physical Uplink control channel Physical Uplink Control Channel (PUCCH) configuration, a common Physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) configuration, a common Physical downlink control channel (Physical Downlink Control Channel, PDCCH) configuration, and the like, and a random access parameter dedicated to the terminal, such as one or more of a PUSCH configuration, a PUCCH configuration, a PDSCH configuration, and a PDCCH configuration.
Through the method of fig. 1, the cell can apply the coverage enhancement technology in a time division manner, and when the terminal applying the coverage enhancement access accesses the cell, a configuration message is sent to the terminal for the next time the terminal applies the coverage enhancement access, so that the data transmission of the terminal in the coverage enhancement area and the data transmission of the normally accessed UE can be effectively considered. Therefore, the spectrum efficiency can be effectively improved, a large number of resource configurations which allow repeated transmission are required to be configured for coverage enhancement, and resource waste is avoided.
In one embodiment, the configuration information indicates one or more preset time periods within a future period of time, so that the terminal accesses the current cell within the preset time indicated by the configuration information.
The current cell informs the terminal of one or more preset time periods for supporting coverage enhancement access in a future period of time in the configuration information, and if the terminal needs to perform data transmission with the current cell, the current cell can be accessed in the one or more preset time periods for performing data transmission in the future period of time indicated by the configuration information.
In an embodiment, the configuration information indicates a time corresponding to the preset time period, and the preset time period has periodicity, so that the terminal accesses the current cell in the preset time period indicated by the configuration information.
The time (i.e. preset time period) that the current cell supports coverage enhancement access has periodicity, the current cell can inform the terminal of the starting time and the ending time of the next preset time period or the starting time and the duration of the next preset time period or the period of the preset time period through a configuration message, so that the terminal can select the latest preset time period to access the current cell when the terminal needs to transmit data with the current cell. For example, the periodicity of the preset time period may be expressed as a time period within a week (e.g., a time period from nine to ten hours every six nights) when the current cell supports coverage enhanced access.
Optionally, the configuration information may further include information of time/frequency resources available in a preset period of time.
Through the above two embodiments, when a terminal applying coverage enhancement technology accesses the cell in a time division manner, the terminal is informed of when to start the coverage enhancement function in a future period of time by configuration information, so that the terminal can access the cell when the coverage enhancement function is started by the cell, and data transmission between the terminal and the cell is completed.
In one embodiment, please refer to fig. 2, fig. 2 is a flow chart of a second coverage enhancement-based communication method, wherein the configuration information includes coverage enhancement parameters of the current cell for allowing the terminal to perform coverage enhancement access, and the terminal stores the received coverage enhancement parameters.
The coverage enhancement parameter is a parameter used by the terminal when the coverage enhancement is applied to access the current cell. Optionally, the coverage enhancement parameters include common coverage enhancement parameters and/or coverage enhancement parameters specific to the terminal. Wherein the common coverage enhancement parameters may include one or more of random access parameters, common PUSCH configuration, common PUCCH configuration, common PDSCH configuration, common PDCCH configuration, and the like. The terminal-specific (i.e., terminal-specific) coverage enhancement parameters may include one or more of random access parameters, such as PUSCH configuration, PUCCH configuration, PDSCH configuration, PDCCH configuration.
The coverage enhancement-based communication method shown in fig. 2 may further include a step S201 of receiving an access request or transmission data sent by the terminal based on the coverage enhancement parameters stored by the terminal, a step S202 of parsing the access request or the transmission data according to local coverage enhancement parameters, and when the parsing is successful, jumping to a step S203 to send a response to the terminal, where the local coverage enhancement parameters are coverage enhancement parameters configured to the terminal.
After the current cell sends the coverage enhancement parameters to the terminal, the terminal stores the received coverage enhancement parameters. And when the terminal needs to be accessed to the current cell by applying coverage enhancement or the terminal applies the coverage enhancement to carry out data transmission with the current cell, sending an access request or transmitting data to the current cell based on the stored coverage enhancement parameters. And the current cell stores the coverage enhancement parameters configured for the terminal in the network equipment of the current cell, namely the local coverage enhancement parameters, while the current cell transmits the coverage enhancement parameters to the terminal. When the current cell receives the access request or the transmission data of the terminal, the current cell can analyze the access request or the transmission data according to the local coverage enhancement parameters of the current cell, and if the analysis is successful, the response of the access request or the transmission data is sent to the terminal so as to inform the terminal that the access request or the transmission data is successfully sent.
Optionally, if the current cell fails to parse the access request or the transmission data, the current cell may send a message indicating that the access request or the transmission data fails to parse to the terminal, and after receiving the message, the terminal may attempt to re-access or re-perform data transmission.
In one embodiment, referring to fig. 2, the parsing the access request or the transmission data according to the local coverage enhancement parameters in step S202 further includes executing step S204 to send an update instruction to the terminal when the parsing fails or the local coverage enhancement parameters cannot be acquired, so that the terminal updates the coverage enhancement parameters stored in the terminal according to the update instruction.
The reason why the current cell fails to analyze the access request or the transmission data may be that the coverage enhancement parameters of the cell are updated after being configured to the terminal, so that when the current cell fails to analyze, the terminal can be informed to acquire the coverage enhancement parameters of the cell again through an update instruction, that is, the coverage enhancement parameters stored by the terminal are updated.
Optionally, when the coverage enhancement parameter is updated in the current cell, the coverage enhancement parameter local to the cell may be emptied, so when the current cell cannot acquire the coverage enhancement parameter local to the cell, an update instruction may be sent to each terminal applying coverage enhancement to access the cell, so as to inform the terminals to update the coverage enhancement parameter stored by the terminal.
Optionally, all or part of the content of the coverage enhancement parameter specific to the terminal is carried by Configuration Grant (CG) information.
Optionally, the configuration authorization information may be used by the terminal in a specific time. After the terminal receives the configuration authorization information, the terminal stores the configuration authorization information or only stores the terminal-specific coverage enhancement parameters in the configuration authorization information.
Optionally, all or part of the content in the common coverage enhancement parameter is carried by the first system message. Optionally, the first system message may include a master information block (Master Information Block, abbreviated MIB) and/or a system message block type1 (System Information Block Type1, abbreviated SIB 1), etc.
Further, the current cell configures a common coverage enhancement parameter and a terminal-specific coverage enhancement parameter for the terminal through the first system message and the configuration authorization information.
In one embodiment, the coverage enhancement based communication method of FIG. 2 may further include broadcasting the first system message or a second system message for the preset time period, broadcasting the second system message for other times than the plurality of preset time periods, wherein the second system message does not include the content of the common coverage enhancement parameter.
When the cell to which the coverage enhancement technique is applied in a time division manner does not support coverage enhancement access (i.e., a time other than a plurality of preset time periods), the broadcast system message (such as MIB and/or SIB 1) does not contain the content of the common coverage enhancement parameters. In addition, the cell may or may not include the content of the coverage enhancement parameters in the system message (e.g., MIB and/or SIB 1) broadcast while supporting coverage enhancement access (i.e., for a plurality of preset time periods).
After the terminal stores the coverage enhancement parameters, an access request or data transmission can be initiated to the current cell based on the coverage enhancement parameters, at this time, the terminal does not need to consider whether the system message actually broadcast by the current cell allows the terminal to which the coverage enhancement is applied, and the current cell can support the terminal to which the coverage enhancement is applied by using a preconfigured resource (such as a preset subband or subbands).
Optionally, the method further comprises broadcasting the first system message when the terminal initially accesses the cell.
When the terminal first applies coverage enhancement to access to the current cell, the current cell broadcasts a first system message, and the terminal stores the first system message or only stores common coverage enhancement parameters in the first system message.
Optionally, the current cell starts the coverage enhancement function in a certain set time period, and informs all terminals applying the coverage enhancement to access the cell to access the current cell, and the current cell broadcasts a first system message, so that the terminals applying the coverage enhancement to access save the first system message or save only the common coverage enhancement parameters in the first system message. The current cell also transmits individual terminal-specific coverage enhancement parameters to the terminals by configuring grant information during the set time period.
After each terminal stores the coverage enhancement parameters, access requests and/or data transmissions may be initiated to the current cell based on the coverage enhancement parameters.
The current cell can normally modify the system message, and only the system message (i.e. the first system message) accessed by the terminal (such as a remote water meter/ammeter) with enhanced application coverage is required to be kept unchanged. That is, the current cell has a set of stored system messages (i.e., first system messages) locally that provide coverage enhancement access for long periods of time. Meanwhile, the current cell can also maintain a set of system messages (namely second system messages) for the normally covered terminal to access, and the update of the second system messages can be carried out according to the existing protocol without being influenced by the first system messages.
It should be noted that, in the multiple preset time periods, if the terminal applying coverage enhancement access can access the current cell based on the coverage enhancement parameters configured previously, the current cell does not need to broadcast the first system message, and at this time, the system message for normally covering access of the UE can be broadcast, so that the utilization rate of radio resources can be improved.
In a specific embodiment, a terminal applying coverage enhancement access performs uplink transmission by using a coverage enhancement parameter based on a previous configuration, for example, an uplink signal (including an access request or transmission data) is sent on a configured physical resource block, the uplink signal is repeatedly sent on a plurality of continuous/discontinuous time slots, a current cell receives the uplink signal sent by the terminal at a corresponding time-frequency position by using transmission resource information previously configured for the terminal, and the uplink signal sent by the terminal can be resolved by adopting a combined receiving mode, then the current cell can send a response to the terminal by using a PDCCH parameter/PDSCH parameter previously configured for the terminal, for example, a downlink control signaling is sent to indicate that the uplink signal is accurately received, or indicate that the uplink signal is not received, and schedule the terminal to retransmit.
If the terminal accesses the current cell based on the coverage enhancement parameters, the current cell needs the terminal to update the configured coverage enhancement parameters, such as indicating the terminal to access by using the updated first system information, and the current cell informs the terminal to acquire the new first system information through the update instruction so as to access the current cell again.
Optionally, after receiving the update instruction, the terminal needs to acquire the updated coverage enhancement parameter, if the terminal is not accessed to the current cell at this time, it needs to continuously detect whether the current cell supports coverage enhancement access until the current cell supports coverage enhancement access, the terminal accesses the current cell, reselects from the current cell to acquire configuration authorization information or a first system message, and updates the coverage enhancement parameter stored by the terminal.
Optionally, the update instruction may indicate which coverage enhancement parameters stored in the terminal need to be updated, for example, the update instruction may indicate that the terminal needs to reacquire configuration authorization information and/or a first system message, so as to update terminal-specific coverage enhancement parameters and/or common coverage enhancement parameters stored in the terminal.
In this embodiment, the current cell may maintain at least two sets of system messages, one set of system messages (i.e., the second system message) for the normally covered terminal to access, and may be updated if necessary, and the other set of system messages is for the application of coverage enhancement access (i.e., the first system message), which may be maintained unchanged for a long time, so that when receiving an access request or transmission data sent by the terminal based on the coverage enhancement parameters, the cell may parse the access request or transmission data based on the first system message maintained by the cell. Further, if the current cell cannot analyze the access request or the transmission data sent by the terminal based on the coverage enhancement parameter, the coverage enhancement parameter included in the first system message maintained by the current cell may not be consistent with the coverage enhancement parameter stored by the terminal, and the current cell may send an update instruction to the terminal to instruct the terminal to update the coverage enhancement parameter stored by the current cell. Further, after the coverage enhancement parameters are configured to the terminal by the current cell, the configured coverage enhancement parameters are stored locally, and if the current cell cannot acquire the local coverage enhancement parameters, the coverage enhancement parameters of the current cell are updated, and the terminal is informed through an update instruction.
In one embodiment, the coverage enhancement parameters specific to the terminal include coverage enhancement parameters corresponding to different coverage enhancement levels, so that the terminal determines the coverage enhancement parameters for transmitting the access request or the transmission data according to the coverage enhancement level of the terminal.
Optionally, the Configured grant information (Configured grant) is applicable to a terminal to which Coverage enhancement access is applied, and the current cell may set corresponding transmission resources for different Coverage enhancement levels (Coverage ENHANCEMENT LEVEL, abbreviated as CE level). Further, the terminal determines its corresponding CE level according to the signal strength of the current cell (such as reference signal received Power (REFERENCE SIGNAL RECEIVING Power, RSRP) and other information), and uses the coverage enhancement parameter (i.e. corresponding transmission resource) corresponding to the CE level to send an access request or transmission data to the current cell.
In a specific embodiment, multiple CE levels may be configured, each level configured with corresponding configuration authorization information.
The configuration authorization information comprises that if minus 110 decibel milliwatts (dbm) is less than or equal to RSRP < -100dbm, the CE grade of the terminal is expressed as being 1, the terminal uses a first set of preconfigured transmission resources to send an access request or transmission data to a current cell, if minus 120dbm is less than or equal to RSRP < -110dbm, the CE grade of the terminal is expressed as being 2, the terminal uses a second set of preconfigured transmission resources to send the access request or the transmission data to the current cell, and the like, a plurality of sets of preconfigured transmission resources corresponding to a plurality of CE levels can be configured in the configuration authorization information.
In this embodiment, the current cell may configure multiple sets of coverage enhancement parameters corresponding to multiple coverage enhancement levels by configuring authorization information, and the terminal may select the corresponding coverage enhancement parameters for sending an access request or transmitting data based on its own coverage enhancement level.
Referring to fig. 3, the embodiment of the present invention further provides a third coverage enhancement-based communication method, which is performed by a terminal applying coverage enhancement access, and the terminal is in a Sleep (Sleep) state at a time when it is not required to access a target cell.
Specifically, referring to fig. 3, the method includes a step S301 of receiving configuration information sent by a target cell after accessing the target cell, and a step S302 of performing an access operation using the configuration information when accessing the target cell next time, wherein the target cell supports coverage enhancement access for a plurality of preset time periods and does not support coverage enhancement access for other times except the preset time periods.
Optionally, the configuration information indicates one or more preset time periods in a future period, and the re-accessing the target cell according to the configuration information includes accessing the target cell in the preset time indicated by the configuration information.
Optionally, the configuration information indicates the preset time period, the preset time period has periodicity, and the re-accessing the target cell according to the configuration information includes accessing the target cell in the preset time indicated by the configuration information.
Optionally, the configuration information comprises coverage enhancement parameters of the target cell for allowing the terminal to perform coverage enhancement access, and after receiving the configuration information sent by the target cell, the method further comprises storing the received coverage enhancement parameters, sending an access request or transmission data to the target cell based on the stored coverage enhancement parameters, and receiving a response sent by the target cell.
Optionally, when receiving an update instruction sent by the target cell, the method further comprises updating the coverage enhancement parameters stored by the terminal according to the update instruction, wherein the update instruction indicates that the target cell fails to analyze the access request or the transmission data, or the update instruction indicates that the target cell cannot acquire the coverage enhancement parameters local to the target cell.
Optionally, the method further comprises updating the coverage enhancement parameters stored by the terminal if the terminal does not receive a response sent by the target cell within a certain time after sending the access request or transmitting data.
Specifically, if the terminal does not receive the response sent by the target cell for a long time after sending the access request or the transmission data, it may be that the terminal fails to send the access request or the transmission data based on the coverage enhancement parameter, the terminal may update the stored coverage enhancement parameter and then send the access request or the transmission data again.
Optionally, the coverage enhancement parameters include common coverage enhancement parameters and/or coverage enhancement parameters specific to the terminal.
Optionally, all or part of the content of the terminal-specific coverage enhancement parameter is carried by configuration authorization information.
Optionally, all or part of the content in the common coverage enhancement parameter is carried by the first system message.
Optionally, the target cell broadcasts the first system message or the second system message in the preset time, and broadcasts the second system message in other time except the preset time, wherein the second system message does not include the content of the public coverage enhancement parameter.
Optionally, the method further comprises receiving a first system message broadcast by the target cell when the target cell is initially accessed.
Optionally, the coverage enhancement parameters specific to the terminal comprise coverage enhancement parameters corresponding to different coverage enhancement levels, and the method further comprises determining the coverage enhancement parameters for sending the access request or the transmission data according to the coverage enhancement levels of the terminal.
It will be understood by those skilled in the art that the steps S301 to S302 may be regarded as performing steps corresponding to the step S101 described in the embodiment shown in fig. 1, where the target cell in fig. 3 refers to the current cell in the method shown in fig. 1 and fig. 2, and the performing entity (the terminal applying coverage enhancement access) in fig. 3 refers to the terminal in the method shown in fig. 1 and fig. 2. Fig. 1 and 3 complement each other in terms of specific implementation principles and logic. Thus, the explanation of the nouns in this embodiment may refer to the related description of the embodiment shown in fig. 1, which is not repeated here.
In a specific embodiment, a New wireless communication system may be introduced, a terminal (such as UE) may access the internet through an Access Point (AP), and a wireless technology of long term evolution (Long Term Evolution, abbreviated as LTE) or a New Radio (abbreviated as NR) may be adopted between the terminal and the AP, where the AP may integrate a function of a part of the core network, and may be deployed in an licensed spectrum or an unlicensed spectrum. The AP can be flexibly deployed in places such as families, enterprises and the like to provide services for a small part of users. The AP services have fewer users and may be more stationary.
The AP is deployed in a company or a family, coverage enhancement needs to be met sometimes, for example, if a basement exists in the family, a water meter and an electric meter can be located in the basement, however, the signal condition of the basement is poor, the AP cannot be normally accessed, signals such as uplink and downlink need to be transmitted for many times by using a coverage enhancement technology, and a receiver needs to combine and receive the signals transmitted by a sender for many times so as to accurately acquire and analyze the signals. However, these meters and meters only need to use the network to transmit signals occasionally, if the APs connected to these meters and meters support coverage enhancement all the time, this means that resources such as random access resources that need to be transmitted repeatedly need to be configured all the time, which causes resource waste.
In this way, by the method described in fig. 1 to 3, the terminals such as the electric meter and the water meter of the basement can communicate with the AP when the AP supports the coverage enhancement access, or the terminals such as the electric meter and the water meter of the basement can communicate with the AP based on the coverage enhancement parameters configured for the AP.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a coverage-enhanced communication device according to an embodiment of the present invention, and a coverage-enhanced communication device 40 includes:
A configuration message sending module 401, configured to send a configuration message to a terminal applying coverage enhancement access during accessing a current cell, where the configuration message is used when the terminal accesses the current cell next time, and the current cell supports coverage enhancement access in a plurality of preset time periods, and does not support coverage enhancement access in other times except the preset time periods.
For more details on the working principle and the working manner of the coverage-based communication device 40, reference may be made to fig. 1 to 2 for a description of the coverage-based communication method, which is not repeated here.
In a specific implementation, the above-mentioned communication device 40 based On coverage enhancement may correspond to a Chip based On coverage enhancement communication function, or to a Chip having a data processing function, such as a System-On-a-Chip (SOC), a baseband Chip, or the like, or to a Chip module including the Chip having the communication function based On coverage enhancement in a network device, or to a Chip module including the Chip having the data processing function, or to a network device.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a coverage enhancement-based communication device 50 according to an embodiment of the present invention, where the coverage enhancement-based communication device is disposed at or coupled to a terminal to which coverage enhancement access is applied.
The coverage enhancement-based communication device 50 includes a configuration information receiving module 501 configured to receive configuration information sent by a target cell after accessing the target cell, and an access module 502 configured to perform an access operation using the configuration information when accessing the target cell next time, wherein the target cell supports coverage enhancement access for a plurality of preset time periods, and does not support coverage enhancement access for other times except the preset time periods.
For more details on the working principle and the working manner of the coverage-based enhancement communication device 50, reference may be made to fig. 3 for a related description of the coverage-based enhancement communication method, which is not repeated here.
In a specific implementation, the above-mentioned communication device 50 based On coverage enhancement may correspond to a Chip based On coverage enhancement communication function, or to a Chip having a data processing function, such as a System-On-a-Chip (SOC), a baseband Chip, or the like, or to a Chip module including the Chip having the communication function based On coverage enhancement in the terminal, or to a Chip module including the Chip having the data processing function, or to the terminal.
In a specific implementation, regarding each apparatus and each module/unit included in each product described in the above embodiments, it may be a software module/unit, or a hardware module/unit, or may be a software module/unit partially, or a hardware module/unit partially.
For example, for each device, product, or application to or integration on a chip, each module/unit contained therein may be implemented in hardware such as a circuit, or at least some of the modules/units may be implemented in hardware such as a circuit, for each device, product, or application to or integration on a chip module, each module/unit contained therein may be implemented in hardware such as a circuit, or different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) of the chip module, or in a different component, or at least some of the modules/units may be implemented in software program that runs on a processor that is integrated within the chip module, and the rest of the modules/units (if any) may be implemented in hardware such as a circuit, for each device, product, application to or integration on a terminal, each module/unit contained therein may be implemented in hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) of the same chip module, or different component, or at least some of the modules/units may be implemented in hardware such as a circuit, for each module/integration on a terminal, or at least some of the modules/modules may be implemented in hardware such as a circuit, or at least some of the rest of the modules/modules may be implemented in hardware such as a processor.
Embodiments of the present invention also provide a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method of any of figures 1 to 3. The storage medium may be a computer readable storage medium, and may include, for example, a non-volatile memory (non-volatile) or a non-transitory memory (non-transitory) and may also include an optical disc, a mechanical hard disc, a solid state hard disc, and the like.
Embodiments of the present invention also provide a network device comprising a coverage-enhanced communication means 40 or comprising a memory and a processor, said memory having stored thereon a computer program operable on said processor to perform the steps of the method according to any of the claims 1 and 2 when said computer program is run.
Embodiments of the present invention also provide a terminal comprising a coverage-enhanced communication device 50 or comprising a memory and a processor, said memory having stored thereon a computer program executable on said processor, said processor executing the steps of the method according to any of the claims 3 when said computer program is executed.
Specifically, in the embodiment of the present invention, the processor may be a central processing unit (central processing unit, abbreviated as CPU), which may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, abbreviated as DSP), application Specific Integrated Circuits (ASIC), off-the-shelf programmable gate arrays (field programmable GATE ARRAY, abbreviated as FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (erasable PROM EPROM), an electrically erasable programmable ROM (ELECTRICALLY EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example, and not limitation, many forms of random access memory (random access memory, RAM) are available, such as static random access memory (STATIC RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCHLINK DRAM, SLDRAM), and direct memory bus random access memory (direct rambus RAM, DR RAM).
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B, and that three cases, a alone, a and B together, and B alone, may exist. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.
The term "plurality" as used in the embodiments of the present application means two or more.
The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order is used, nor is the number of the devices in the embodiments of the present application limited, and no limitation on the embodiments of the present application should be construed.
The "connection" in the embodiment of the present application refers to various connection manners such as direct connection or indirect connection, so as to implement communication between devices, which is not limited in the embodiment of the present application.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (27)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626792.3A CN115442821B (en) | 2021-06-04 | 2021-06-04 | Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110626792.3A CN115442821B (en) | 2021-06-04 | 2021-06-04 | Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115442821A CN115442821A (en) | 2022-12-06 |
| CN115442821B true CN115442821B (en) | 2025-01-24 |
Family
ID=84239774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110626792.3A Active CN115442821B (en) | 2021-06-04 | 2021-06-04 | Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115442821B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104969618A (en) * | 2014-01-29 | 2015-10-07 | 华为技术有限公司 | Apparatus, method and system for cell selection |
| CN105264987A (en) * | 2014-01-29 | 2016-01-20 | 华为技术有限公司 | Method for indicating cell coverage enhancement mode and base station |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9445378B2 (en) * | 2013-07-25 | 2016-09-13 | Lg Electronics Inc. | Method and apparatus for coverage enhancement |
| CN105981455B (en) * | 2014-02-11 | 2019-12-10 | Lg 电子株式会社 | Method and apparatus for indicating a change of coverage enhancement mode in a wireless communication system |
| CN107995595A (en) * | 2016-10-27 | 2018-05-04 | 北京信威通信技术股份有限公司 | A kind of method for realizing NB-IoT multicast coverage enhancements |
| CN108024310B (en) * | 2016-11-04 | 2020-09-11 | 华为技术有限公司 | Method for transmitting data, terminal equipment and network equipment |
-
2021
- 2021-06-04 CN CN202110626792.3A patent/CN115442821B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104969618A (en) * | 2014-01-29 | 2015-10-07 | 华为技术有限公司 | Apparatus, method and system for cell selection |
| CN105264987A (en) * | 2014-01-29 | 2016-01-20 | 华为技术有限公司 | Method for indicating cell coverage enhancement mode and base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115442821A (en) | 2022-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10660151B2 (en) | Radio terminal, base station, and method therefor | |
| RU2752653C2 (en) | Random access method, network device, and user equipment | |
| CN109792660B (en) | A kind of information indication method and apparatus, network equipment, terminal equipment | |
| CN108541034B (en) | Apparatus and method for handling state transitions | |
| JP2020523914A (en) | User equipment, radio access network apparatus, methods, systems, and computer-implementable instruction products | |
| WO2021243655A1 (en) | Information configuration method and apparatus, device and readable storage medium | |
| RU2763168C1 (en) | Method for receiving the downlink channel and terminal apparatus | |
| US11510225B2 (en) | Methods, terminal device and base station for physical downlink control channel monitoring | |
| CN113923741B (en) | A cell access method, device, medium and terminal | |
| CN112806086B (en) | Random access method, equipment and storage medium | |
| EP4333489A1 (en) | Sdt failure reporting method, terminal device, and network device | |
| JP2018510562A (en) | Random access method, user equipment, and base station | |
| EP3681205A1 (en) | Data transmission method, network device and terminal device | |
| WO2023130471A1 (en) | Cell access method and apparatus, and device and readable storage medium | |
| CN112567873B (en) | Method, device and computer storage medium for information transmission | |
| US10757686B2 (en) | Method and user equipment for requesting common information from an access node | |
| US9473969B2 (en) | Spectrum sensing | |
| WO2020087476A1 (en) | Method and device for transmitting system information | |
| CN112312499B (en) | Cell reselection method and device | |
| WO2018127056A1 (en) | System information sending and processing method and apparatus | |
| CN115442008B (en) | Transmission resource configuration method and device, storage medium, terminal, and network equipment | |
| CN115442821B (en) | Communication method and device based on coverage enhancement, storage medium, network equipment, and terminal | |
| US10887827B2 (en) | Communication message sending method and apparatus based on backoff duration | |
| WO2016169013A1 (en) | Communication method and device | |
| CN115474159A (en) | Beam resource allocation method, beam switching method, device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |