CN107295647B - Method and device for configuring physical layer mode configuration information - Google Patents
Method and device for configuring physical layer mode configuration information Download PDFInfo
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- CN107295647B CN107295647B CN201610197414.7A CN201610197414A CN107295647B CN 107295647 B CN107295647 B CN 107295647B CN 201610197414 A CN201610197414 A CN 201610197414A CN 107295647 B CN107295647 B CN 107295647B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0466—Wireless resource allocation based on the type of the allocated resource the resource being a scrambling code
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
- H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
- H04W74/085—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment collision avoidance
Abstract
The invention provides a method and a device for configuring physical layer mode configuration information, wherein the method applied to a base station comprises the following steps: when a terminal is detected to be switched from a source cell to a target cell, acquiring physical layer mode configuration information corresponding to the current wireless access mode of the target cell; and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal. The method for configuring the physical layer mode configuration information in the embodiment of the invention can relatively reduce signaling overhead and reduce the probability of PDCCH conflict through switching the physical layer mode among a plurality of wireless access modes, and can solve the problem of low switching speed under high-density networking by switching among cells under the same wireless access mode.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring physical layer mode configuration information.
Background
And 5G ultra-dense networking scenes and other technologies realize continuous wide area coverage. Under ultra-dense networking, multiple access technologies exist simultaneously. During the moving process, the user needs to switch between different cells or different access technologies. In a communication network architecture, according to periodic feedback of Channel information such as CQI (Channel Quality indicator) and PMI (Precoding matrix indicators), and QoS (Quality of Service) requirements such as the size, the time-ductility, and the packet loss rate of a terminal Service, a MAC (Media Access Control Media Access controller) configures PHY (Physical layer) to call PDSCH (Physical Downlink Shared Channel) resources through PDCCH (Physical Downlink Control Channel). When the access technology changes due to user mobility, the channel quality or QoS requirements change, and the higher layer needs to reconfigure the mode of the PHY.
The 5G system is an uplink and downlink synchronization system, namely, a user realizes downlink synchronization through monitoring system broadcasting; when sending uplink data each time, if the terminal uplink is in an out-of-step state at this time, a synchronization process needs to be initiated. The synchronization process requires a minimum 50ms delay and an interactive process of up to 4 messages, which is negligible for high rate traffic and continuous data transmission traffic. However, for low-rate burst traffic, almost every data packet is sent, a synchronization procedure is performed, and the system overhead is unacceptable.
Meanwhile, different access technologies have great difference on the differentiation of the size of the resource block. In the future 5G, the system bandwidth is very large, and for some user services, the allocated resources are relatively small, for example, 2/4/8 PRBs (Physical Resource Block Physical Resource blocks) can carry these data, and in 100 PRBs (20M system bandwidth), even wider system bandwidths (100M, 200M, or even 500M), too many small Resource blocks are allocated, which causes a large amount of fragmentation to system resources, reduces the Resource utilization rate of the system, increases the complexity of Resource allocation, and increases the probability of control channel limitation.
In the prior art, a network side performs PDCCH scheduling according to information such as CQI and PMI reported by a user request. Under different network access technologies, the higher layer configures different PHY modes by configuring different PDCCHs. The scheduling mode wastes signaling resources and increases the probability of PDCCH control channel collision. Different access technologies and user services have great difference on the requirements of the resource block size, and excessive small resource blocks are introduced to cause a great amount of fragments for system resources, so that the resource utilization rate of the system is reduced, and the complexity of resource allocation is increased.
Disclosure of Invention
Embodiments of the present invention provide a method and an apparatus for configuring physical layer mode configuration information, which are used to solve the problems that a scheduling method in the prior art wastes signaling resources, introduces too many small resource blocks, causes a large amount of fragments to system resources, reduces resource utilization of a system, and increases complexity of resource allocation.
The embodiment of the invention provides a method for configuring physical layer mode configuration information, which is applied to a base station and comprises the following steps:
when a terminal is detected to be switched from a source cell to a target cell, acquiring physical layer mode configuration information corresponding to the current wireless access mode of the target cell;
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal.
When the terminal is detected to be switched from the source cell to the target cell, the step of acquiring the physical layer mode configuration information corresponding to the current wireless access mode of the target cell includes:
when the terminal is detected to be switched from a source cell to a target cell and the wireless access mode of the source cell is different from that of the target cell, acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
When the terminal is detected to be switched from a source cell to a target cell and the wireless access mode of the source cell is the same as that of the target cell, acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein the step of sending the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal comprises:
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH).
Wherein the step of sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH) comprises:
and scrambling the physical layer mode configuration information corresponding to the current wireless access mode of the target cell by using a cell radio network temporary identifier C-RNTI, and then sending the information to the terminal through a physical downlink control channel PDCCH.
Wherein, after sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a physical downlink control channel PDCCH, the method further includes:
and terminating the transmission period of the last physical layer mode by sending Physical Downlink Control Channel (PDCCH) control information.
The embodiment of the invention also provides a method for configuring the physical layer mode configuration information, which is applied to a terminal and comprises the following steps:
when a source cell is switched to a target cell, receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by a base station;
and switching from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell.
When the source cell is switched to the target cell, the step of receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, includes:
when the wireless access mode of the source cell is different from that of the target cell, receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
When the wireless access mode of the source cell is the same as that of the target cell, receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein, the step of receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell sent by the base station comprises:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, through a Physical Downlink Control Channel (PDCCH).
Wherein, the step of receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell sent by the base station through a physical downlink control channel PDCCH comprises:
and receiving physical layer mode configuration information which is sent by the base station and corresponds to the current wireless access mode of the target cell after scrambling by adopting a cell radio network temporary identifier C-RNTI through a Physical Downlink Control Channel (PDCCH).
After receiving, by a physical downlink control channel PDCCH, physical layer mode configuration information corresponding to a current radio access mode of the target cell sent by the base station, the method further includes:
and receiving the Physical Downlink Control Channel (PDCCH) control information sent by the base station to terminate the transmission period of the last physical layer mode.
The embodiment of the invention also provides a device for configuring the physical layer mode configuration information, which is applied to a base station, and the device comprises:
the system comprises a detection acquisition module, a detection processing module and a processing module, wherein the detection acquisition module is used for acquiring physical layer mode configuration information corresponding to the current wireless access mode of a target cell when a terminal is detected to be switched from a source cell to the target cell;
and the sending module is used for sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal.
Wherein, the detection acquisition module comprises:
the first detection acquisition submodule is used for acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information when the terminal is detected to be switched from the source cell to the target cell and the wireless access mode of the source cell is different from the wireless access mode of the target cell; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
A second detection obtaining sub-module, configured to, when detecting that the terminal is switched from the source cell to the target cell and a wireless access mode of the source cell is the same as a wireless access mode of the target cell, obtain, according to a correspondence between a pre-configured wireless access mode and physical layer mode configuration information, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein the sending module is further configured to:
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH).
Wherein the sending module is further configured to:
and scrambling the physical layer mode configuration information corresponding to the current wireless access mode of the target cell by using a cell radio network temporary identifier C-RNTI, and then sending the information to the terminal through a physical downlink control channel PDCCH.
Wherein the apparatus further comprises:
and a termination module, configured to, after the sending module sends the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a physical downlink control channel PDCCH, terminate a transmission period of a previous physical layer mode by sending physical downlink control channel PDCCH control information.
The embodiment of the invention also provides a device for configuring the physical layer mode configuration information, which is applied to a terminal and comprises the following steps:
a receiving module, configured to receive physical layer mode configuration information corresponding to a current wireless access mode of a target cell sent by a base station when a source cell is switched to the target cell;
and the switching module is used for switching from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell.
Wherein the receiving module comprises:
the first receiving submodule is used for receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information when the wireless access mode of the source cell is different from the wireless access mode of the target cell; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
The second receiving submodule is used for receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information when the wireless access mode of the source cell is the same as the wireless access mode of the target cell; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein the receiving module is further configured to:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, through a Physical Downlink Control Channel (PDCCH).
Wherein the receiving module is further configured to:
and receiving physical layer mode configuration information which is sent by the base station and corresponds to the current wireless access mode of the target cell after scrambling by adopting a cell radio network temporary identifier C-RNTI through a Physical Downlink Control Channel (PDCCH).
Wherein the apparatus further comprises:
and a receiving termination module, configured to receive, after the receiving module receives, through a physical downlink control channel PDCCH, physical layer mode configuration information corresponding to the current radio access mode of the target cell sent by the base station, the physical downlink control channel PDCCH control information sent by the base station, so as to terminate a transmission period of a previous physical layer mode.
The technical scheme of the embodiment of the invention has the beneficial effects that at least:
in the scheme of the invention, in the process of cell switching of the terminal, the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located is searched according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information, and the acquired physical layer mode configuration information is sent to the terminal, so that the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information, the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, the probability of PDCCH collision can be reduced, and the problem of low switching rate under high-density networking can be solved by the switching mode between the cells under the same wireless access mode.
Drawings
Fig. 1 is a flowchart of a method for configuring physical layer mode configuration information according to a first embodiment of the present invention;
fig. 2 is a flowchart of a method for configuring physical layer mode configuration information according to a second embodiment of the present invention;
FIG. 3 is a diagram illustrating a predetermined time domain multiplexing period according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a variation of a predetermined time domain multiplexing period according to an embodiment of the present invention;
fig. 5 is a flowchart of a method for configuring physical layer mode configuration information according to a third embodiment of the present invention;
fig. 6 is a flowchart of a method for configuring physical layer mode configuration information according to a fourth embodiment of the present invention;
fig. 7 is a first schematic diagram of an apparatus for configuring physical layer mode configuration information according to an embodiment of the present invention;
fig. 8 is a schematic diagram of a second apparatus for configuring physical layer mode configuration information according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
Example one
As shown in fig. 1, an embodiment of the present invention provides a method for configuring physical layer mode configuration information applied to a base station, including:
The base station needs to acquire various wireless access modes and various physical layer modes, each physical layer mode includes corresponding configuration information, and then the corresponding relationship between the wireless access mode and the physical layer mode configuration information is configured. When it is detected that the terminal is switched from the source cell to the target cell, the physical layer mode configuration information corresponding to the current wireless access mode of the target cell needs to be determined according to the correspondence between the pre-configured wireless access mode and the physical layer mode configuration information.
And 102, sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal.
And then, sending the physical layer mode configuration information corresponding to the current wireless access mode of the determined target cell to the terminal, so that the terminal switches the physical layer mode according to the received physical layer mode configuration information.
For example: when detecting that the terminal is switched from the source cell to the target cell, the current wireless access mode of the source cell is 4G, the current wireless access mode of the target cell is 3G, and when detecting that the terminal is switched from the source cell to the target cell, the physical layer mode configuration information corresponding to the 3G mode of the target cell needs to be searched according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information, and then the physical layer mode configuration information corresponding to the 3G mode of the target cell is sent to the terminal. And the terminal switches to the physical layer mode corresponding to the physical layer mode configuration information corresponding to the 3G mode of the target cell according to the received physical layer mode configuration information.
In the cell switching process of the terminal, the embodiment of the invention finds the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located according to the corresponding relation between the wireless access mode and the physical layer mode configuration information, and sends the acquired physical layer mode configuration information to the terminal, so that the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information, the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, and the probability of PDCCH collision can be reduced.
Example two
As shown in fig. 2, a second embodiment of the present invention provides a method for configuring physical layer mode configuration information applied to a base station, including:
The base station firstly acquires various wireless access modes and various physical layer modes, wherein each physical layer mode comprises corresponding configuration information, and then configures the corresponding relation between the wireless access modes and the physical layer mode configuration information to form a corresponding relation table of the wireless access modes and the physical layer mode configuration information.
Wherein the physical layer mode configuration information includes: a preset time window length L and a preset time domain multiplexing period T, as shown in fig. 3, wherein the length of the preset time domain multiplexing period T is greater than the preset time window length L. The preset time domain multiplexing period T is N SFN, N is a positive integer and ranges from 1 to 8, and the SFN represents a system frame and takes 10 ms.
When detecting the switching of the terminal between the source cell and the target cell, determining whether the wireless access mode of the source cell is the same as the wireless access mode of the target cell, and when the wireless access mode of the source cell is different from the wireless access mode of the target cell, acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell from a corresponding relation table of the wireless access mode and the physical layer mode configuration information.
At this time, since the radio access mode of the source cell is different from the radio access mode of the target cell, the second physical layer mode configuration information corresponding to the current second radio access mode of the corresponding target cell is different from the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
When the wireless access mode of the source cell is the same as that of the target cell, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell needs to be acquired from the corresponding relation table of the wireless access mode and the physical layer mode configuration information.
At this time, since the radio access mode of the source cell is the same as the radio access mode of the target cell, the second physical layer mode configuration information corresponding to the current second radio access mode of the corresponding target cell is also the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
It should be noted that, when the user is in the wireless access mode of the target cell, if the user service changes at this time, the preset time window length L needs to be adjusted to the time window length corresponding to the current service type within the preset time domain multiplexing period T according to the preset corresponding relationship between the service type and the time window length. For example, when a user is in a 4G mode of a target cell and a current call service is converted into a video chat service, since the current wireless access mode is not changed but the service is changed, the current preset time window length needs to be adjusted to the time window length corresponding to the current service type. And the length of the preset time domain multiplexing period T is set to be larger than the length L of the preset time window, so that the length of the time window can be adjusted in the preset time domain multiplexing period T.
And sending the obtained physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through the PDCCH. And when the wireless access mode of the source cell is different from the wireless access mode of the target cell, the second physical layer mode configuration information corresponding to the current second wireless access mode of the corresponding target cell is different from the first physical layer mode configuration information corresponding to the current first wireless access mode of the source cell. At this time, after the terminal is switched to the target cell from the source cell, the physical layer mode needs to be switched.
When the physical layer mode configuration information is sent, the physical layer mode configuration information may be scrambled by using a C-RNTI (cell radio Network Temporary Identifier) and then sent to the terminal through a physical downlink control channel PDCCH. And after receiving the scrambled physical layer mode configuration information, the terminal descrambles by adopting the pre-configured C-RNTI to obtain the physical layer mode configuration information.
It should be noted that, after the physical downlink control channel PDCCH is used to send the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal, the terminal can send service data to the terminal after being switched to the corresponding physical mode. When sending service data, the service data needs to be transmitted to the terminal within the preset time window length of the current physical layer mode. The service data transmitted at this time may be scrambled by using a cell radio network temporary identifier C-RNTI, as shown in fig. 3 and 4, and the scrambling is performed in a CFI (Control Format Indicator) region of the first subframe beginning at the period T. And then sending the data to the terminal through a Physical Downlink Control Channel (PDCCH), so that the terminal descrambles the data after receiving the data.
After the service data is transmitted within the preset time domain multiplexing period T, the PDCCH control information may be sent to terminate the transmission period of the previous physical layer mode. Different physical layer modes correspond to different preset time domain multiplexing periods T and different preset time window lengths L. As shown in fig. 4, the time duration of different preset time domain multiplexing periods T is different. When the transmission of the service is not completed within the preset time domain multiplexing period T, the service data needs to be retransmitted in the next period, and the time duration of the time domain multiplexing period at this time is not changed. It should be noted that, when service data is retransmitted, subframe numbers carried in the transmitted service data need to be determined. The time domain multiplexing period comprises a first preset number of system frames, each system frame corresponds to a system frame number, each system frame comprises a second preset number of subframes, each subframe corresponds to a subframe number, and the first preset number is equal to the second preset number. The position index of the subframe number in the system frame is a process identification of data retransmission, and when service data needing to be retransmitted exists in a time domain multiplexing period, a corresponding subframe needs to be searched according to the process identification of the service data retransmission; and determining that the next system frame of the system frames which fail to transmit data to the terminal is the current system frame, and retransmitting the data at the corresponding subframe of the current system frame.
In the cell switching process of the terminal, the embodiment of the invention finds the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located according to the corresponding relation between the wireless access mode and the physical layer mode configuration information, and sends the acquired physical layer mode configuration information to the terminal, so that the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information, the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, the probability of PDCCH collision can be reduced, and the problem of low switching rate under high-density networking can be solved by the switching mode between the cells under the same wireless access mode.
EXAMPLE III
As shown in fig. 5, a third embodiment of the present invention provides a method for configuring physical layer mode configuration information applied to a terminal, where the method includes:
When a terminal is switched to a target cell due to cell switching, it needs to receive physical layer mode configuration information corresponding to a wireless access mode of the target cell where the terminal is currently located, which is sent by a base station. The physical layer mode configuration information corresponding to the current wireless access mode of the target cell is obtained by the base station in a pre-configured corresponding relation table.
After acquiring various wireless access modes and configuration information of various physical layer modes, the base station establishes a corresponding relation between the wireless access modes and the configuration information of the physical layer modes to form a corresponding relation table of the wireless access modes and the configuration information of the physical layer modes.
After receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell sent by the base station, switching the physical layer mode from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell. After the switching of the physical layer mode is completed, the transmission of the service data can be performed.
In the embodiment of the invention, the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located and sent by the base station is received in the cell switching process of the terminal, and the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information after receiving the corresponding physical layer mode configuration information sent by the base station, so that the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, and the probability of PDCCH collision can be reduced.
Example four
As shown in fig. 6, a fourth embodiment of the present invention provides a method for configuring physical layer mode configuration information applied to a terminal, where the method includes:
When a terminal is switched to a cell, a source cell before the terminal is switched and a target cell after the terminal is switched need to be confirmed. And then, receiving physical layer mode configuration information which is sent by the base station and corresponds to the current wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information.
When a terminal is switched between cells, the wireless access mode of a source cell and the wireless access mode of a target cell need to be judged, and when the wireless access mode of the source cell is different from the wireless access mode of the target cell, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell, which is sent by a base station, is received, and the first physical layer mode configuration information corresponding to the current first wireless access mode of the source cell is different.
When the wireless access mode of the source cell is the same as the wireless access mode of the target cell, the received second physical layer mode configuration information corresponding to the current second wireless access mode of the target cell, which is sent by the base station, is the same as the first physical layer mode configuration information corresponding to the current first wireless access mode of the source cell.
And when receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell sent by the base station, receiving the physical layer mode configuration information corresponding to the current wireless access mode of the target cell sent by the base station through a downlink control channel PDCCH.
And the received physical layer mode configuration information is the physical layer mode configuration information corresponding to the current wireless access mode of the target cell after the base station scrambles by adopting the cell radio network temporary identifier C-RNTI, and at the moment, the received information needs to be descrambled.
Wherein the physical layer mode configuration information includes: a preset time window length L and a preset time domain multiplexing period T, as shown in fig. 3, wherein the length of the preset time domain multiplexing period T is greater than the preset time window length L. The preset time domain multiplexing period T is N SFN, N is a positive integer and ranges from 1 to 8, and the SFN represents a system frame and takes 10 ms.
And switching the physical layer mode of the target cell according to the received second physical layer mode configuration information corresponding to the current second wireless access mode of the target cell, and switching the physical layer mode from the first physical layer mode corresponding to the current first wireless access mode of the source cell to the second physical layer mode corresponding to the current second wireless access mode of the target cell.
It should be noted that, when the user is in the radio access mode of the target cell, if the terminal service changes at this time, the base station needs to be notified, so that the base station adjusts the time window length.
It should be noted that, after receiving, through a physical downlink control channel PDCCH, physical layer mode configuration information corresponding to a current radio access mode of a target cell sent by a base station, a terminal switches to a corresponding physical mode. And then can receive the service data transmitted by the base station. The received service data can be service data scrambled by a cell radio network temporary identifier (C-RNTI), and the terminal needs to descramble the service data after receiving the service data.
After the service data is transmitted within the preset time domain multiplexing period T, the PDCCH control information sent by the base station may be received to terminate the transmission period of the previous physical layer mode. When the transmission of the service is not completed within the preset time domain multiplexing period T, the service data needs to be retransmitted within the next period. As shown in fig. 4, the time duration of different preset time domain multiplexing periods T is different. It should be noted that, when the service data is retransmitted, the base station needs to determine the subframe number carried in the transmitted service data. The time domain multiplexing period comprises a first preset number of system frames, each system frame corresponds to a system frame number, each system frame comprises a second preset number of subframes, each subframe corresponds to a subframe number, and the first preset number is equal to the second preset number. The position index of the subframe number in the system frame is a process identification of data retransmission, and when service data needing to be retransmitted exists in a time domain multiplexing period, the base station needs to search a corresponding subframe according to the process identification of the service data retransmission; and determining that the next system frame of the system frames which fail to transmit data to the terminal is the current system frame, and retransmitting the data at the corresponding subframe of the current system frame.
In the embodiment of the invention, in the process of cell switching of the terminal, the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located and sent by the base station is received, and after the corresponding physical layer mode configuration information sent by the base station is received, the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information, so that the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, the probability of PDCCH collision can be reduced, and the problem of low switching rate under high-density networking can be solved by a switching mode between cells under the same wireless access mode.
EXAMPLE five
The following is an embodiment of an apparatus for configuring physical layer mode configuration information according to a fifth embodiment of the present invention. Embodiments of the apparatus and the method embodiments described above belong to the same concept, and details that are not described in detail in the embodiments of the apparatus may refer to the embodiments of the method described above.
As shown in fig. 7, the apparatus for configuring physical layer mode configuration information applied to a base station includes:
a detection obtaining module 10, configured to obtain physical layer mode configuration information corresponding to a current wireless access mode of a target cell when detecting that a terminal is switched from a source cell to the target cell;
a sending module 20, configured to send the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal.
Wherein, the detection acquisition module 10 includes:
a first detection obtaining sub-module 11, configured to, when detecting that the terminal is switched from the source cell to the target cell and a wireless access mode of the source cell is different from a wireless access mode of the target cell, obtain, according to a correspondence between a pre-configured wireless access mode and physical layer mode configuration information, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell; the second physical layer mode configuration information is different from the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell; or
A second detection obtaining sub-module 12, configured to, when it is detected that the terminal is switched from the source cell to the target cell and a wireless access mode of the source cell is the same as that of the target cell, obtain, according to a correspondence between a pre-configured wireless access mode and physical layer mode configuration information, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein the sending module 20 is further configured to:
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH).
Wherein, the sending module 20 is further configured to:
and scrambling the physical layer mode configuration information corresponding to the current wireless access mode of the target cell by using a cell radio network temporary identifier C-RNTI, and then sending the information to the terminal through a physical downlink control channel PDCCH.
Wherein, the device still includes:
a terminating module 30, configured to, after the sending module 20 sends the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through the physical downlink control channel PDCCH, terminate the transmission period of the previous physical layer mode by sending a physical downlink control channel PDCCH control information.
As shown in fig. 8, the apparatus for configuring physical layer mode configuration information applied to a terminal includes:
a receiving module 40, configured to receive, when switching from a source cell to a target cell, physical layer mode configuration information corresponding to a current radio access mode of the target cell sent by a base station;
a switching module 50, configured to switch, according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell, from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell.
Wherein, the receiving module 40 includes:
a first receiving submodule 41, configured to receive, when the wireless access mode of the source cell is different from the wireless access mode of the target cell, second physical layer mode configuration information, which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to a correspondence between a preconfigured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is different from the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell; or
A second receiving submodule 42, configured to receive, when the wireless access mode of the source cell is the same as the wireless access mode of the target cell, second physical layer mode configuration information, which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to a correspondence between a preconfigured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
The physical layer mode configuration information includes a preset time window length and a preset time domain multiplexing period, wherein the length of the preset time domain multiplexing period is greater than the length of the preset time window.
Wherein the receiving module 40 is further configured to:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, through a Physical Downlink Control Channel (PDCCH).
Wherein, the receiving module 40 is further configured to:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is transmitted by the base station and scrambled by adopting the cell radio network temporary identifier C-RNTI, through a physical downlink control channel PDCCH.
Wherein, the device still includes:
a receiving termination module 60, configured to receive, after the receiving module 40 receives, through the physical downlink control channel PDCCH, physical layer mode configuration information corresponding to the current radio access mode of the target cell sent by the base station, the physical downlink control channel PDCCH control information sent by the base station, so as to terminate a transmission period of a previous physical layer mode.
In the cell switching process of the terminal, the embodiment of the invention finds the physical layer mode configuration information corresponding to the current wireless access mode of the cell where the terminal is located according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information, and sends the acquired physical layer mode configuration information to the terminal, so that the terminal is switched to the corresponding physical layer mode according to the physical layer mode configuration information, the signaling overhead can be relatively reduced, the number of resource fragments can be reduced, the probability of PDCCH conflict can be reduced, and the problem of low switching rate under high-density networking can be solved by the switching mode between the cells under the same wireless access mode.
It should be noted that, the apparatus for configuring physical layer mode configuration information provided in the embodiments of the present invention is an apparatus applying the method described above, and all embodiments of the method described above are applicable to the apparatus and can achieve the same or similar beneficial effects.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (24)
1. A method for configuring physical layer mode configuration information is applied to a base station, and is characterized in that the method comprises the following steps:
the base station acquires various wireless access modes and various physical layer modes, configures the corresponding relation between the wireless access modes and the physical layer mode configuration information, and forms a corresponding relation table of the wireless access modes and the physical layer mode configuration information;
when a terminal is detected to be switched from a source cell to a target cell, acquiring physical layer mode configuration information corresponding to the current wireless access mode of the target cell;
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal.
2. The method according to claim 1, wherein the step of acquiring the physical layer mode configuration information corresponding to the current radio access mode of the target cell when detecting that the terminal is handed over from the source cell to the target cell comprises:
when the terminal is detected to be switched from a source cell to a target cell and the wireless access mode of the source cell is different from that of the target cell, acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
When the terminal is detected to be switched from a source cell to a target cell and the wireless access mode of the source cell is the same as that of the target cell, acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
3. The method of claim 1, wherein the physical layer mode configuration information comprises a predetermined time window length and a predetermined time domain multiplexing period, and wherein the predetermined time domain multiplexing period is longer than the predetermined time window length.
4. The method according to claim 1, wherein the step of sending the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal comprises:
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH).
5. The method according to claim 4, wherein the step of sending the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH) comprises:
and scrambling the physical layer mode configuration information corresponding to the current wireless access mode of the target cell by using a cell radio network temporary identifier C-RNTI, and then sending the information to the terminal through a physical downlink control channel PDCCH.
6. The method of claim 4, wherein after the sending the physical layer mode configuration information corresponding to the current radio access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH), the method further comprises:
and terminating the transmission period of the last physical layer mode by sending Physical Downlink Control Channel (PDCCH) control information.
7. A method for configuring physical layer mode configuration information is applied to a terminal, and is characterized by comprising the following steps:
when a source cell is switched to a target cell, receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by a base station; the base station acquires various wireless access modes and various physical layer modes, configures the corresponding relation between the wireless access modes and the physical layer mode configuration information, and forms a corresponding relation table of the wireless access modes and the physical layer mode configuration information;
and switching from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell.
8. The method of claim 7, wherein the step of receiving physical layer mode configuration information corresponding to a current radio access mode of the target cell sent by the base station when the source cell is handed over to the target cell comprises:
when the wireless access mode of the source cell is different from that of the target cell, receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
When the wireless access mode of the source cell is the same as that of the target cell, receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
9. The method of claim 7, wherein the physical layer mode configuration information comprises a predetermined time window length and a predetermined time domain multiplexing period, wherein the predetermined time domain multiplexing period is longer than the predetermined time window length.
10. The method of claim 7, wherein the step of receiving the physical layer mode configuration information corresponding to the current radio access mode of the target cell sent by the base station comprises:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, through a Physical Downlink Control Channel (PDCCH).
11. The method according to claim 10, wherein the step of receiving physical layer mode configuration information corresponding to the current radio access mode of the target cell sent by the base station through a physical downlink control channel PDCCH comprises:
and receiving physical layer mode configuration information which is sent by the base station and corresponds to the current wireless access mode of the target cell after scrambling by adopting a cell radio network temporary identifier C-RNTI through a Physical Downlink Control Channel (PDCCH).
12. The method of claim 10, wherein after receiving physical layer mode configuration information corresponding to a current radio access mode of the target cell sent by the base station through a physical downlink control channel PDCCH, the method further comprises:
and receiving the Physical Downlink Control Channel (PDCCH) control information sent by the base station to terminate the transmission period of the last physical layer mode.
13. An apparatus for configuring physical layer mode configuration information, applied to a base station, the apparatus comprising:
the system comprises a detection acquisition module, a detection processing module and a processing module, wherein the detection acquisition module is used for acquiring physical layer mode configuration information corresponding to the current wireless access mode of a target cell when a terminal is detected to be switched from a source cell to the target cell; the base station acquires various wireless access modes and various physical layer modes, configures the corresponding relation between the wireless access modes and the physical layer mode configuration information, and forms a corresponding relation table of the wireless access modes and the physical layer mode configuration information;
and the sending module is used for sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal.
14. The apparatus of claim 13, wherein the detection acquisition module comprises:
the first detection acquisition submodule is used for acquiring second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell according to a corresponding relation between a pre-configured wireless access mode and the physical layer mode configuration information when the terminal is detected to be switched from the source cell to the target cell and the wireless access mode of the source cell is different from the wireless access mode of the target cell; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
A second detection obtaining sub-module, configured to, when detecting that the terminal is switched from the source cell to the target cell and a wireless access mode of the source cell is the same as a wireless access mode of the target cell, obtain, according to a correspondence between a pre-configured wireless access mode and physical layer mode configuration information, second physical layer mode configuration information corresponding to a current second wireless access mode of the target cell; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
15. The apparatus of claim 13, wherein the physical layer mode configuration information comprises a predetermined time window length and a predetermined time domain multiplexing period, wherein the predetermined time domain multiplexing period is longer than the predetermined time window length.
16. The apparatus of claim 13, wherein the sending module is further configured to:
and sending the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a Physical Downlink Control Channel (PDCCH).
17. The apparatus of claim 16, wherein the sending module is further configured to:
and scrambling the physical layer mode configuration information corresponding to the current wireless access mode of the target cell by using a cell radio network temporary identifier C-RNTI, and then sending the information to the terminal through a physical downlink control channel PDCCH.
18. The apparatus of claim 16, further comprising:
and a termination module, configured to, after the sending module sends the physical layer mode configuration information corresponding to the current wireless access mode of the target cell to the terminal through a physical downlink control channel PDCCH, terminate a transmission period of a previous physical layer mode by sending physical downlink control channel PDCCH control information.
19. An apparatus for configuring physical layer mode configuration information, applied to a terminal, includes:
a receiving module, configured to receive physical layer mode configuration information corresponding to a current wireless access mode of a target cell sent by a base station when a source cell is switched to the target cell; the base station acquires various wireless access modes and various physical layer modes, configures the corresponding relation between the wireless access modes and the physical layer mode configuration information, and forms a corresponding relation table of the wireless access modes and the physical layer mode configuration information;
and the switching module is used for switching from a first physical layer mode corresponding to the current wireless access mode of the source cell to a second physical layer mode corresponding to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell according to the physical layer mode configuration information corresponding to the current wireless access mode of the target cell.
20. The apparatus of claim 19, wherein the receiving module comprises:
the first receiving submodule is used for receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information when the wireless access mode of the source cell is different from the wireless access mode of the target cell; the second physical layer mode configuration information is different from first physical layer mode configuration information corresponding to a current first radio access mode of a source cell; or
The second receiving submodule is used for receiving second physical layer mode configuration information which is sent by the base station and corresponds to a current second wireless access mode of the target cell and is obtained according to the corresponding relation between the pre-configured wireless access mode and the physical layer mode configuration information when the wireless access mode of the source cell is the same as the wireless access mode of the target cell; the second physical layer mode configuration information is the same as the first physical layer mode configuration information corresponding to the current first radio access mode of the source cell.
21. The apparatus of claim 19, wherein the physical layer mode configuration information comprises a predetermined time window length and a predetermined time domain multiplexing period, wherein the predetermined time domain multiplexing period is longer than the predetermined time window length.
22. The apparatus of claim 19, wherein the receiving module is further configured to:
and receiving physical layer mode configuration information corresponding to the current wireless access mode of the target cell, which is sent by the base station, through a Physical Downlink Control Channel (PDCCH).
23. The apparatus of claim 22, wherein the receiving module is further configured to:
and receiving physical layer mode configuration information which is sent by the base station and corresponds to the current wireless access mode of the target cell after scrambling by adopting a cell radio network temporary identifier C-RNTI through a Physical Downlink Control Channel (PDCCH).
24. The apparatus of claim 22, further comprising:
and a receiving termination module, configured to receive, after the receiving module receives, through a physical downlink control channel PDCCH, physical layer mode configuration information corresponding to the current radio access mode of the target cell sent by the base station, the physical downlink control channel PDCCH control information sent by the base station, so as to terminate a transmission period of a previous physical layer mode.
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