CN111294898A - User terminal, state switching method thereof, computer-readable storage medium and base station - Google Patents
User terminal, state switching method thereof, computer-readable storage medium and base station Download PDFInfo
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- CN111294898A CN111294898A CN201910251150.2A CN201910251150A CN111294898A CN 111294898 A CN111294898 A CN 111294898A CN 201910251150 A CN201910251150 A CN 201910251150A CN 111294898 A CN111294898 A CN 111294898A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
- H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
A user terminal, a state switching method thereof, a computer readable storage medium and a base station are provided. The method comprises the following steps: when receiving downlink control information, detecting whether the downlink control information contains PDCCH detection configuration indication information; when the downlink control information contains the PDCCH detection configuration indication information, adjusting the state of the downlink control information based on the PDCCH detection configuration indication information; the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field. By applying the scheme, the time delay required by the terminal to switch the PDCCH detection configuration can be reduced, and the influence on the coverage area of the base station due to the increase of the length of the downlink control information can be avoided.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a user equipment, a state switching method thereof, a computer-readable storage medium, and a base station.
Background
Battery life of a User Equipment (UE) is an important factor affecting User experience. In order to save the energy consumption of the UE, the fifth generation mobile communication network (5G) system introduces many technical means to instruct the switching of the UE state, so that the UE can enter a power saving state under appropriate conditions to save the energy consumption of the UE.
In 5G, the UE status switching involves various configuration changes, such as switching of Bandwidth units (BWPs), switching of Physical Downlink Control CHannel (PDCCH) detection periods, setting of PDCCH detection hopping Part (PDCCH skiping), and Cross-slot scheduling (Cross-slot scheduling) with a minimum scheduling interval greater than 0.
In the above power saving configuration, the handover of BWP and cross-slot scheduling have already been standardized, but no specific solution exists as to how the base station indicates the PDCCH detection period and PDCCH detection hopping part to the UE.
Disclosure of Invention
The invention aims to solve the problems that: how to indicate the PDCCH detection configuration information to the UE to enable the handover of the terminal state.
In order to solve the above problem, an embodiment of the present invention provides a method for switching a user terminal state, which is applied to a terminal, and the method includes: when receiving downlink control information, detecting whether the downlink control information contains PDCCH detection configuration indication information; when the downlink control information contains the PDCCH detection configuration indication information, adjusting the state of the downlink control information based on the PDCCH detection configuration indication information; the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
Optionally, the existing field is a time domain resource allocation field.
Optionally, the adjusting the state of the PDCCH detection configuration indication information includes: obtaining PDCCH detection configuration information indicated by the PDCCH detection configuration indication information based on the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information; and adjusting the state of the mobile terminal based on the obtained PDCCH detection configuration information.
Optionally, the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information is located in a time domain resource allocation table.
Optionally, the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information is located in a preset PDCCH detection configuration mapping table.
Optionally, the PDCCH detection configuration indication information included in the preset PDCCH detection configuration mapping table is PDCCH detection configuration indication information that needs to perform PDCCH detection configuration switching.
Optionally, the PDCCH detection configuration indication information and PDCCH detection configuration information may be in any one of the following relationships: a one-to-one correspondence relationship; many-to-one correspondence.
Optionally, the PDCCH detection configuration indication information is: index values in the time domain resource allocation table.
The embodiment of the invention also provides a switching method of the user terminal state, which is applied to a base station and comprises the following steps: configuring and sending a corresponding relation between PDCCH detection configuration indication information and PDCCH detection configuration information; indicating PDCCH detection configuration information through downlink control information, wherein the downlink control information comprises PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
An embodiment of the present invention further provides a user terminal, where the user terminal includes: a detecting unit, configured to detect whether downlink control information includes PDCCH detection configuration indication information when the downlink control information is received; a state adjustment unit, configured to adjust a state of the downlink control information based on the PDCCH detection configuration indication information when the PDCCH detection configuration indication information is included in the downlink control information; the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
Optionally, the existing field is a time domain resource allocation field.
Optionally, the state adjustment unit includes: a search subunit, configured to obtain PDCCH detection configuration information indicated by PDCCH detection configuration indication information based on a correspondence between the PDCCH detection configuration indication information and the PDCCH detection configuration information; and the state adjusting subunit is used for adjusting the state of the user equipment based on the obtained PDCCH detection configuration information.
Optionally, the searching subunit obtains, by searching a time domain resource allocation table, PDCCH detection configuration information indicated by the PDCCH detection configuration indication information.
Optionally, the searching subunit obtains, by searching a preset PDCCH detection configuration mapping table, PDCCH detection configuration information indicated by the PDCCH detection configuration indication information.
Optionally, the PDCCH detection configuration indication information included in the preset PDCCH detection configuration mapping table is PDCCH detection configuration indication information that needs to perform PDCCH detection configuration switching.
Optionally, the PDCCH detection configuration indication information and PDCCH detection configuration information may be in any one of the following relationships: a one-to-one correspondence relationship; many-to-one correspondence.
Optionally, the PDCCH detection configuration indication information is: index values in the time domain resource allocation table.
An embodiment of the present invention further provides a base station, where the base station includes: a configuration unit, configured to configure a corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information; a sending unit, configured to send a correspondence between PDCCH detection configuration indication information and PDCCH detection configuration information; and an indicating unit, configured to indicate PDCCH detection configuration information through downlink control information, where the downlink control information includes PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information.
The PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
Embodiments of the present invention further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method of any one of the above-mentioned steps is performed.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes any of the steps of the method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
by adopting the scheme, the PDCCH detection configuration of the terminal is switched through the downlink control information, and compared with the PDCCH detection configuration of the terminal switched through other signaling such as RRC signaling, the time delay required by the terminal for switching the PDCCH detection configuration can be reduced, so that the terminal can flexibly and quickly adjust the state according to the service requirement. In addition, because the PDCCH detection configuration indication information is located in the existing field of the downlink control information, but not in the newly added field of the downlink control information, the coverage area of the base station can be prevented from being affected due to the increase of the length of the downlink control information, and the complexity of the downlink control information can be reduced.
Drawings
Fig. 1 is a flowchart of a method for switching states of a ue according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a user terminal in an embodiment of the present invention.
Detailed Description
In order to meet the performance requirement, many new technical means are introduced into the 5G system, such as larger transmission bandwidth, larger subcarrier spacing, and the like. However, the introduction of these technical means has led to a several-fold increase in energy consumption for 5G UEs compared to 4G UEs. However, the volume of the existing UE and the battery capacity in the unit volume are not greatly improved, so that the service life of the battery of the 5G terminal is difficult to meet the daily use requirement, and the use experience of a user is influenced.
To save energy consumption of the UE, the base station may change the following configuration: switching of BWP, switching of PDCCH detection period, setting PDCCH skiping, Cross-slot scheduling and the like.
Wherein, the BWP switching is used to configure the UE to operate on a smaller BWP when there is no large amount of data to be transmitted, and to switch to a larger BWP when data transmission is needed. A larger BWP may have a configuration of parameters that is more favorable for fast data transmission, such as a smaller PDCCH period, a larger subcarrier spacing, a larger number of antennas, etc. When the data transmission is complete, the UE may switch back to small BWP to save power for the terminal.
Cross-slot scheduling means that a time slot in which Downlink Control Information (DCI) is received and a Physical Downlink Shared CHannel (PDSCH) scheduled by the DCI are not in the same time slot. In LTE, DCI) is in the same time slot as the PDSCH scheduled by the DCI, and in 5G, in order to improve scheduling flexibility, the scheduled PDSCH may be located in the last several time slots of the corresponding DCI.
The PDCCH detection period switching means that the period of receiving the PDCCH by the terminal is changed. Taking the subcarrier interval of 15KHz as an example, if the initial PDCCH detection period is 1 timeslot, the UE needs to receive and blind-detect the PDCCH in each timeslot, i.e. 10 blind-detects are needed within 10 milliseconds. If the service of the terminal is relatively sparse and the service is relatively insensitive to the requirement of time delay, the detection period of the PDCCH can be increased, so that unnecessary PDCCH blind detection energy consumption is avoided. When the PDCCH period is increased to 5 time slots, compared with the PDCCH detection period of 1 time slot, the PDCCH blind detection is only needed to be carried out for 2 times within 10 milliseconds, and the energy consumption of receiving and blind detection of 8 PDCCHs can be saved every 10 milliseconds.
The PDCCH blanking refers to that the UE does not receive and blind-check the PDCCH within a certain time. Taking the PDCCH cycle as 1 slot as an example, if the UE receives a PDCCH skiping command in the slot n, and the command indicates that the number of skipings is 3, the terminal will not receive and blind-detect the PDCCHs in the slots n +1 to n +3, and restart to receive the PDCCH when the n +4 th slot is reached. By the mode, the base station can enable the terminal to enter a dormant state without receiving the PDCCH when no data is scheduled in a short time, so that the electric energy of the terminal is saved.
The switching of the PDCCH detection period requires the terminal to change PDCCH detection behavior, for example, the period of the control information search space (search space) configured by the previous higher layer is 1 time slot, then each time slot has a PDCCH detection occasion (monitoring occasion) of the UE, that is, the terminal needs to perform PDCCH detection once in each time slot. If the detection period is switched, which is equivalent to that the PDCCH position which needs to be detected in each time slot originally is changed, if the detection opportunity occurs once every 4 time slots, the behavior can be understood as that the period for detecting the PDCCH by the terminal is changed.
Currently, BWP handover and cross-slot scheduling have been standardized, wherein cross-slot scheduling is implemented by configuring a Time Domain Resource Allocation (TDRA) table. But no solution exists for how the base station indicates the PDCCH detection period and the PDCCH detection hopping part to the UE.
Therefore, the embodiment of the invention provides a method for switching the state of a user terminal, and by applying the method, the PDCCH detection configuration of the terminal is switched through DCI, so that the time delay required by the terminal for switching the PDCCH detection configuration can be reduced compared with the method for switching the PDCCH detection configuration of the terminal through other signaling such as RRC signaling, and the state of the terminal can be flexibly and rapidly adjusted according to the service requirement. Moreover, because the PDCCH detection configuration indication information is located in the existing field of the DCI, not in the newly added field of the DCI, the coverage of the base station can be prevented from being affected due to the increase of the length of the DCI, and the complexity of the DCI can be reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for switching a user terminal state, where the method is applied to a terminal. The method may specifically comprise the steps of:
The PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field in the downlink control information.
Currently, existing fields of DCI include a BWP switch field (Bandwidth part indicator) and a Time domain resource allocation field (Time domain resource allocation). Wherein, the BWP handover field is used to instruct the UE to perform BWP handover, and the time domain resource allocation field is used to complete cross-slot scheduling for the UE. The PDCCH detection configuration indication information is arranged in the existing field in the DCI, and compared with the method for indicating the PDCCH detection configuration by adding a new field in the DCI, the method can avoid increasing the length of the DCI, influence on the coverage area of a base station and reduce the design complexity of the DCI.
In a specific implementation, the PDCCH detection configuration indication information may be located in a BWP handover field in DCI. For example, each PDCCH detection period is set to correspond to at least one BWP, and when the UE switches to the corresponding BWP, the PDCCH detection period may correspond to another value.
In another embodiment of the present invention, in order to improve the flexibility of the PDCCH detection configuration, the PDCCH detection configuration indication information may be set in a time domain resource allocation field in DCI. Compared with the BWP handover field in which the PDCCH detection configuration indication information is set in the downlink control information, since the base station implements cross-slot scheduling according to the TDRA table in the time domain resource allocation field, and the TDRA table is configured by the base station according to the service requirement of the UE, the configuration is more flexible, the maximum number of BWPs is 4, and each BWP matches multiple parameters, and the base station cannot perform handover of PDCCH detection configuration without changing other parameters matched by BWPs.
Table 1 is a conventional TDRA table. The TDRA table is a maximum 16 row indication table. In table 1, the first column is an index Value, i.e., index, the second column is a K0 Value, the third column is a mapping type (mapping type), and the fourth column is a Start and Length Indication Value (SLIV).
Where K0 is a slot interval between the PDCCH and the corresponding PDSCH. For example, when K0 is 1, the PDCCH is in time slot n, and its corresponding PDSCH is in time slot n + 1. In the third column, a represents slot-based mapping, i.e. one slot is a scheduling unit, and the PDCCH is always located on the first 1, 2 or 3 symbols of one slot; b represents mini-slot (mini-slot) based mapping, that is, exponential symbols are a scheduling unit, and the starting position of the PDCCH is not limited to the first symbol in the slot according to the number of symbols of a mini-slot, for example, the length of the mini-slot is 7 symbols, and then the PDCCH may be located in the first symbol or in the 8 th symbol. The numerical values of the fourth column indicate the starting symbol position of the PDSCH and the persistent symbol length of the PDSCH.
When scheduling across time slots, the base station configures the TDRA table, and DCI indicates the number of table rows used, i.e. index indicating the number of table rows and is carried by DCI. When receiving the DCI, the UE may obtain a corresponding K0 value based on the index carried in the DCI, thereby completing the cross-slot scheduling.
TABLE 1
| Index | K0 | Type | SLIV |
| 0 | 0 | A/B | XXX |
| 1 | 1 | A/B | XXX |
| 2 | 4 | A/B | XXX |
| 3 | 6 | A/B | XXX |
| … | … | … | … |
| 15 | 32 | A/B | XXX |
In an embodiment of the present invention, the index value in the time domain resource allocation table may be used as the PDCCH detection configuration indication information, so that when the base station sends the index value in the time domain resource allocation table to the UE through the DCI, the UE may obtain, based on the index value carried in the DCI, not only the corresponding K0 value to complete cross-slot scheduling, but also obtain the corresponding PDCCH detection configuration information to complete switching of PDCCH detection configuration, thereby effectively improving resource utilization.
In a specific implementation, the PDCCH detection configuration indication information may indicate only PDCCH detection period information, may indicate only PDCCH detection hopping part information, and may also indicate both PDCCH detection period information and PDCCH detection hopping part information, which is not limited specifically.
And step 12, when the downlink control information includes the PDCCH detection configuration indication information, adjusting the state of the downlink control information based on the PDCCH detection configuration indication information.
In a specific implementation, a corresponding relationship between PDCCH detection configuration indication information and PDCCH detection configuration information may be preset, and when the downlink control information includes the PDCCH detection configuration indication information, PDCCH detection configuration information indicated by the PDCCH detection configuration indication information may be obtained based on the corresponding relationship between the PDCCH detection configuration indication information and PDCCH detection configuration information, and then a state of the mobile terminal itself may be adjusted based on the obtained PDCCH detection configuration information.
Taking the PDCCH detection configuration indication information as an index value in a time domain resource allocation table and the PDCCH detection configuration information as PDCCH detection period information as an example, in a specific implementation, a corresponding relationship between the index value in the time domain resource allocation table and the PDCCH detection period information may be preset, and after obtaining the index value carried in the DCI, the corresponding PDCCH detection period information is obtained based on the index value.
In specific implementation, the base station may configure, for different PDCCH detection configuration indication information, corresponding PDCCH detection configuration information according to a service requirement of the UE. For example, when the PDCCH detection configuration indication information is an index value in a time domain resource allocation table, corresponding PDCCH detection configuration information may be configured for each index value in an original TDRA table, or corresponding PDCCH detection configuration information may be configured for a part of index values in the original TDRA table, specifically configured according to a service requirement of the UE.
The switching unit of the PDCCH detection period and the cropping unit of the PDCCH are not limited to a slot, and may be determined according to a Transmission Time Interval (TTI) of the system, and may be a slot (slot), a mini-slot (mini-slot), a subframe (subframe), or a frame (frame).
In an embodiment of the present invention, the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information may be located in a time domain resource allocation table.
For example, as shown in table 2, a column may be added to an existing TDRA table to establish an index value and PDCCH detection period information in a time domain resource allocation table. Wherein, PDCCH period of 0 or null indicates no handover. When the PDCCH period is not 0 or not empty, the UE may switch the detection period of the PDCCH according to the value of the PDCCH period, and if the index value is 2, the UE may switch the detection period of the PDCCH to detect once every 4 slots.
TABLE 2
| Index | K0 | Type | SLIV | PDCCH period |
| 0 | XX | A/B | XXX | 0/- |
| 1 | XX | A/B | XXX | 1 |
| 2 | XX | A/B | XXX | 4 |
| 3 | XX | A/B | XXX | 6 |
| … | A/B | XXX | … | |
| 15 | XX | A/B | XXX | 32 |
As shown in table 3, a column is added to the existing TDRA table to establish a correspondence relationship between the index value in the time domain resource allocation table and the PDCCH detection hop portion information. Wherein a PDCCH skipping of 0 or null indicates no hopping. When the PDCCH skip is 1, the PDCCH detection skip is executed, and the specific number of the skips is determined according to the K0 value corresponding to the index value.
As shown in table 4, two columns may also be added in some TDRA tables to establish a corresponding relationship between the index value in the time domain resource allocation table and the PDCCH detection cycle information and PDCCH detection hop section information. Wherein, PDCCH period of 0 or null indicates that the PDCCH detection period is not switched, and PDCCH skip of 0 or null indicates that no hopping is performed. And when any one of the two is not empty, corresponding state switching is executed, if the index value is 15, PDCCH skiping is carried out, and switching of the PDCCH detection period is executed.
TABLE 3
| Index | K0 | Type | SLIV | PDCCH Skipping |
| 0 | XX | A/B | XXX | 0 |
| 1 | XX | A/B | XXX | 0 |
| 2 | XX | A/B | XXX | 0 |
| 3 | XX | A/B | XXX | 1 |
| … | A/B | XXX | 0 | |
| 15 | XX | A/B | XXX | 1 |
TABLE 4
| Index | K0 | Type | SLIV | PDCCH period | PDCCH skipping |
| 0 | XX | A/B | XXX | - | 0 |
| 1 | XX | A/B | XXX | - | 0 |
| 2 | XX | A/B | XXX | - | 0 |
| 3 | XX | A/B | XXX | - | 1 |
| … | A/B | XXX | … | … | |
| 15 | XX | A/B | XXX | 32 | 1 |
In another embodiment of the present invention, the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information may also be located in a preset PDCCH detection configuration mapping table. The preset PDCCH detection configuration mapping table is a newly-built mapping table instead of a TDRA table.
For example, when the PDCCH detection configuration indication information indicates only PDCCH detection period information, the preset PDCCH detection configuration mapping table may be as shown in table 5:
TABLE 5
| Index | PDCCH period |
| 0 | 0/- |
| 1 | 1 |
| 2 | 4 |
| 3 | 6 |
| … | … |
| 15 | 32 |
When the PDCCH detection configuration indication information indicates only PDCCH detection hopping part information, the preset PDCCH detection configuration mapping table may be as shown in table 6:
TABLE 6
| Index | PDCCH skipping |
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 0 |
| … | … |
| 15 | 1 |
When the PDCCH detection configuration indication information indicates PDCCH detection period information and PDCCH detection hopping part information at the same time, the preset PDCCH detection configuration mapping table may be as shown in table 7:
TABLE 7
| Index | PDCCH period | PDCCH skipping |
| 0 | - | 0 |
| 1 | - | 0 |
| 2 | - | 0 |
| 3 | - | 1 |
| … | … | … |
| 15 | 32 | 1 |
And setting the corresponding relation between the PDCCH detection configuration indication information and the PDCCH detection configuration information in a preset PDCCH detection configuration mapping table instead of a time domain resource allocation table, wherein the corresponding relation between the index value and the PDCCH detection configuration information is configured according to the TDRA table after the TDRA table is finished. Moreover, when the corresponding relation between the PDCCH detection configuration indication information and the PDCCH detection configuration information needs to be reconfigured, the content of the original TDRA table of the index value does not need to be reconfigured. In this way, the cross-slot scheduling information and the PDCCH detection configuration information in the TDRA table can still be transmitted simultaneously according to the index value of the TDRA table.
In a preferred embodiment of the present invention, in order to save transmission resources and terminal memory, the PDCCH detection configuration indication information included in the preset PDCCH detection configuration mapping table may be only PDCCH detection configuration indication information that needs to perform PDCCH detection configuration switching, instead of all PDCCH detection configuration indication information in the TDRA table, that is, all index values.
For example, when the PDCCH detection configuration indication information indicates only PDCCH detection hopping part information, table 6 may be simplified as shown in table 8, that is, PDCCH detection hopping is indicated only when index is 4 and index is 15.
TABLE 8
| Index | PDCCH skipping |
| 4 | 1 |
| 15 | 1 |
In a specific implementation, the different PDCCH detection configuration indication information may correspond to different PDCCH detection configuration information, that is, the PDCCH detection configuration indication information and the PDCCH detection configuration information are in one-to-one correspondence, as shown in table 5. The different PDCCH detection configuration indication information may also correspond to the same PDCCH detection configuration information, that is, a plurality of PDCCH detection configuration indication information correspond to one PDCCH detection configuration information, as shown in tables 9 and 10.
Table 9 sets a correspondence between PDCCH detection configuration indication information and PDCCH detection configuration information in a manner of adding columns to an existing TDRA table. Table 10 shows a mapping table for PDCCH detection configuration, where the mapping table sets a corresponding relationship between PDCCH detection configuration indication information and PDCCH detection configuration information. As shown in table 9 and table 10, when the index values are 0, 1, and 2, the value of K0 can be changed, but the PDCCH detection cycle does not need to be switched.
In a specific implementation, after PDCCH detection configuration information indicated by PDCCH detection configuration indication information is obtained, the state of the mobile terminal is adjusted based on the obtained PDCCH detection configuration information.
For example, as shown in table 7, when index is 15 in the DCI received by the UE in slot n, the UE switches the PDCCH detection period to 32. Meanwhile, if the PDCCH skipping indication is 1, the UE skips corresponding K0 time slots and detects the PDCCH again, that is, the PDCCH between time slots n to n + K0 is skipped and not detected.
TABLE 9
Watch 10
As can be seen from the above, in the method for switching the state of the ue in the embodiment of the present invention, the PDCCH detection configuration of the terminal is switched through the existing field of the DCI, so that the time delay required for the terminal to switch the PDCCH detection configuration is reduced, the coverage area of the base station is prevented from being affected due to the increase of the length of the DCI, and the complexity of the DCI can be reduced.
The embodiment of the invention also provides another user terminal state switching method, which is applied to the base station. The method comprises the following steps:
step S0 is to configure a correspondence relationship between PDCCH detection configuration indication information and PDCCH detection configuration information.
Step S1 is to transmit a correspondence between PDCCH detection configuration indication information and PDCCH detection configuration information.
In a specific implementation, the base station may configure a correspondence between PDCCH detection configuration indication information and PDCCH detection configuration information. The corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information may be located in a time domain resource allocation table, or may be located in a preset PDCCH detection configuration mapping table. The base station may send a correspondence between the PDCCH detection configuration indication information and the PDCCH detection configuration information to the UE through Radio Resource Control (RRC). The setting of the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information may be specifically implemented with reference to the descriptions in table 1 to table 10, and is not described herein again.
Step S2 is to indicate PDCCH detection configuration information by downlink control information including PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information.
In a specific implementation, the PDCCH detection configuration indication information may be in an existing field in the downlink control information, and may be implemented specifically with reference to the description about step 11. After receiving the PDCCH detection configuration indication information, the UE may adjust its own state with reference to the description of step 12.
In order to make the present invention better understood and implemented by those skilled in the art, the following detailed description is provided for a receiver, a user terminal and a computer readable storage medium corresponding to the above-described method.
Referring to fig. 2, an embodiment of the present invention provides a user terminal 20, where the user terminal 20 may include: a detection unit 21 and a state adjustment unit 22. Wherein:
the detecting unit 21 is configured to detect whether downlink control information includes PDCCH detection configuration indication information when the downlink control information is received;
the state adjusting unit 22 is configured to, when the downlink control information includes the PDCCH detection configuration indication information, adjust a state of the downlink control information based on the PDCCH detection configuration indication information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
In an embodiment of the present invention, the existing field is a time domain resource allocation field.
In an embodiment of the present invention, the state adjustment unit 22 may include: a lookup subunit 221 and a state adjustment subunit 222. Wherein:
the search subunit 221 is configured to obtain PDCCH detection configuration information indicated by the PDCCH detection configuration indication information based on a corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information;
the state adjusting subunit 222 is configured to adjust a state of the mobile terminal based on the obtained PDCCH detection configuration information.
In an embodiment of the present invention, the searching subunit 221 obtains the PDCCH detection configuration information indicated by the PDCCH detection configuration indication information by searching a time domain resource allocation table.
In another embodiment of the present invention, the searching subunit 221 obtains the PDCCH detection configuration information indicated by the PDCCH detection configuration indication information by searching a preset PDCCH detection configuration mapping table.
In an embodiment of the present invention, the PDCCH detection configuration indication information included in the preset PDCCH detection configuration mapping table is PDCCH detection configuration indication information that needs to perform PDCCH detection configuration switching.
In an embodiment of the present invention, a correspondence between the PDCCH detection configuration indication information and the PDCCH detection configuration information is any one of the following:
a one-to-one correspondence relationship;
many-to-one correspondence.
In an embodiment of the present invention, the PDCCH detection configuration indication information is: index values in the time domain resource allocation table.
An embodiment of the present invention further provides a base station, where the base station may include: configuration unit, sending unit and instruction unit.
The configuration unit is configured to configure a corresponding relationship between PDCCH detection configuration indication information and PDCCH detection configuration information; the sending unit is configured to send a corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information; and an indicating unit, configured to indicate PDCCH detection configuration information through downlink control information, where the downlink control information includes PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information.
The PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
After the base station sends the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information to the UE, the UE may search the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information based on the PDCCH detection configuration indication information to obtain the corresponding PDCCH detection configuration information, and then adjust its own state based on the obtained PDCCH detection configuration information.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer instruction is stored, and when the computer instruction runs, the step of performing any one of the user terminal state switching methods in the foregoing embodiments is executed, which is not described again.
In particular implementations, the computer-readable storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
The embodiment of the present invention further provides a user terminal, where the user terminal may include a memory and a processor, where the memory stores a computer instruction capable of running on the processor, and when the processor runs the computer instruction, the step of executing any of the user terminal state switching methods in the foregoing embodiments is performed, which is not described again.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (20)
1. A method for switching user terminal state is applied to a terminal, and is characterized by comprising the following steps:
when receiving downlink control information, detecting whether the downlink control information contains PDCCH detection configuration indication information;
when the downlink control information contains the PDCCH detection configuration indication information, adjusting the state of the downlink control information based on the PDCCH detection configuration indication information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
2. The method of claim 1, wherein the existing field is a time domain resource allocation field.
3. The method of claim 1, wherein the adjusting the state of the ue based on the PDCCH detection configuration indication information comprises:
obtaining PDCCH detection configuration information indicated by the PDCCH detection configuration indication information based on the corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information;
and adjusting the state of the mobile terminal based on the obtained PDCCH detection configuration information.
4. The method of claim 3, wherein the PDCCH detection configuration indication information and the PDCCH detection configuration information are in a time domain resource allocation table.
5. The method of claim 3, wherein the PDCCH detection configuration indication information and the PDCCH detection configuration information are mapped to a predetermined PDCCH detection configuration mapping table.
6. The method of claim 5, wherein the PDCCH detection configuration indication information included in the preset PDCCH detection configuration mapping table is PDCCH detection configuration indication information that needs to perform PDCCH detection configuration switching.
7. The method of claim 3, wherein the PDCCH detection configuration indication information and the PDCCH detection configuration information are in a corresponding relationship of any one of the following:
a one-to-one correspondence relationship;
many-to-one correspondence.
8. The method of claim 1, wherein the PDCCH detection configuration indication information is: index values in the time domain resource allocation table.
9. A method for switching user terminal state is applied to a base station, and is characterized by comprising the following steps:
configuring and sending a corresponding relation between PDCCH detection configuration indication information and PDCCH detection configuration information;
indicating PDCCH detection configuration information through downlink control information, wherein the downlink control information comprises PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
10. A user terminal, comprising:
a detecting unit, configured to detect whether downlink control information includes PDCCH detection configuration indication information when the downlink control information is received;
a state adjustment unit, configured to adjust a state of the downlink control information based on the PDCCH detection configuration indication information when the PDCCH detection configuration indication information is included in the downlink control information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
11. The user terminal of claim 10, wherein the existing field is a time domain resource allocation field.
12. The user terminal of claim 10, wherein the state adjustment unit comprises:
a search subunit, configured to obtain PDCCH detection configuration information indicated by PDCCH detection configuration indication information based on a correspondence between the PDCCH detection configuration indication information and the PDCCH detection configuration information;
and the state adjusting subunit is used for adjusting the state of the user equipment based on the obtained PDCCH detection configuration information.
13. The ue of claim 12, wherein the lookup sub-unit obtains the PDCCH detection configuration information indicated by the PDCCH detection configuration indication information by looking up a time domain resource allocation table.
14. The ue of claim 12, wherein the lookup subunit obtains the PDCCH detection configuration information indicated by the PDCCH detection configuration indication information by looking up a preset PDCCH detection configuration mapping table.
15. The ue of claim 14, wherein the PDCCH detection configuration indication information included in the predetermined PDCCH detection configuration mapping table is PDCCH detection configuration indication information indicating that PDCCH detection configuration switching needs to be performed.
16. The user terminal of claim 12, wherein the corresponding relationship between the PDCCH detection configuration indication information and PDCCH detection configuration information is any one of the following:
a one-to-one correspondence relationship;
many-to-one correspondence.
17. The user terminal of claim 10, wherein the PDCCH detection configuration indication information is: index values in the time domain resource allocation table.
18. A base station, comprising:
a configuration unit, configured to configure a corresponding relationship between the PDCCH detection configuration indication information and the PDCCH detection configuration information;
a sending unit, configured to send a correspondence between PDCCH detection configuration indication information and PDCCH detection configuration information;
an indicating unit, configured to indicate PDCCH detection configuration information through downlink control information, where the downlink control information includes PDCCH detection configuration indication information corresponding to the indicated PDCCH detection configuration information;
the PDCCH detection configuration indication information is used for indicating PDCCH detection configuration information, and the PDCCH detection configuration information comprises at least one of PDCCH detection period information and PDCCH detection hopping part information; the PDCCH detection configuration indication information is located in an existing field of the downlink control information, and the existing field of the downlink control information includes a BWP handover field and a time domain resource allocation field.
19. A computer readable storage medium having computer instructions stored thereon, wherein the computer instructions when executed perform the steps of the method of any one of claims 1 to 9.
20. A user terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 9.
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