CN112291860A - Energy-saving method and system based on downlink control information expansion - Google Patents
Energy-saving method and system based on downlink control information expansion Download PDFInfo
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- CN112291860A CN112291860A CN202011555528.7A CN202011555528A CN112291860A CN 112291860 A CN112291860 A CN 112291860A CN 202011555528 A CN202011555528 A CN 202011555528A CN 112291860 A CN112291860 A CN 112291860A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
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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
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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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
- H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
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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
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
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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
The invention discloses an energy-saving method based on downlink control information extension, which comprises the following steps: generating a wake-up signal based on a format of downlink control information, wherein the wake-up signal is used for waking up a physical downlink control channel monitor in a sleep state; adding a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal; whether physical downlink control channel monitoring is carried out is indicated through a skipping signal; wherein, the skipping signal and the wake-up signal are in the same downlink control information format. The invention also discloses an energy-saving system based on the downlink control information expansion, and according to the method and the system disclosed by the invention, the consumption caused by PDCCH monitoring can be reduced by combining a new technology of PDCCH processing from the aspect of downlink control information expansion, thereby achieving the purpose of energy saving.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to an energy-saving method and system based on downlink control information expansion.
Background
With the development of NR (New RAT, New radio access technology), more types of application scenarios and services are supported, but New challenges are brought to terminal energy saving, such as processing complexity and energy consumption brought by flexible parameter sets, energy consumption brought by newly adding bandwidths, monitoring times increased by time delay requirements, energy consumption brought by more antenna numbers, and the like.
PDCCH (Physical Downlink Control Channel) monitoring is usually adopted to reduce energy consumption, but PDCCH is a periodic operation, and PDCCH monitoring is still performed when there is no information transmission, so that a large amount of energy consumption is also caused.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an energy saving method based on downlink control information extension, which can reduce the consumption caused by PDCCH monitoring by combining with a new PDCCH processing technology from the perspective of downlink control information extension, thereby achieving the purpose of energy saving.
In order to solve the above technical problem, a first aspect of the present invention discloses a method for saving energy based on downlink control information extension, the method comprising: generating a wake-up signal based on a format of downlink control information, wherein the wake-up signal is used for waking up a physical downlink control channel monitor in a sleep state; adding a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal; whether physical downlink control channel monitoring is carried out or not is indicated through the skipping signal; wherein the skip signal and the wake-up signal are in the same downlink control information format.
In some embodiments, the indicating whether to perform the physical downlink control channel monitoring through the skip signal includes: and when the skipping signal is 1, skipping physical downlink control channel monitoring to the next operation period, and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
In some embodiments, the format of the downlink control information comprises: the format of the downlink control information with the length of L is formed by 1-bit awakening indication and L1-bit auxiliary cell dormancy indications.
In some embodiments, the method further comprises: and configuring the operation cycle of downlink control channel monitoring as an ON state cycle of DRX.
In some embodiments, the indicating whether to perform the physical downlink control channel monitoring through the skip signal includes: when the skipping signal is 1, skipping physical downlink control channel monitoring to the next DRX ON state period; and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
According to a second aspect of the present invention, there is disclosed an energy saving system based on downlink control information extension, the system comprising: a wake-up module, configured to generate a wake-up signal based on a format of downlink control information, where the wake-up signal is used to wake up a physical downlink control channel monitor in a sleep state; a skipping module, configured to add a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal; a monitoring module, configured to indicate whether to perform physical downlink control channel monitoring through the skip signal; wherein the skip signal and the wake-up signal are in the same downlink control information format.
In some embodiments, the skip module is implemented to: when the skipping signal is 1, skipping physical downlink control channel monitoring to the next operation period; and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
In some embodiments, the system further comprises: and the DRX module is used for configuring the operation cycle of the downlink control channel monitoring to be an ON state cycle of DRX.
According to a third aspect of the present invention, a network-side device is disclosed, comprising a memory, a processor and a computer program stored on the memory and executable on the processor; wherein the processor implements the steps in the power saving method based on the downlink control information extension as described above when executing the program.
A computer readable storage medium, having stored thereon a computer program which, when executed by a processor, implements the steps in the power saving method based on downlink control information extension as described above.
Compared with the prior art, the invention has the beneficial effects that:
the invention can solve the problem of large energy waste caused by the fact that the PDCCH monitoring is still carried out when no information is transmitted due to the periodic operation of the conventional PDCCH monitoring. Furthermore, a DRX mechanism is introduced, so that the PDCCH monitoring only occurs in an on state in one DRX period, and the time for PDCCH monitoring is flexibly determined by skipping signals. Therefore, the efficiency of PDCCH monitoring is greatly improved, and the energy-saving effect is effectively achieved.
Drawings
Fig. 1 is a flowchart illustrating a method for energy saving based on downlink control information extension according to an embodiment of the present invention;
fig. 2 is a flowchart of another energy saving method based on downlink control information extension according to an embodiment of the present invention;
fig. 3 is a flowchart illustrating another energy saving method based on downlink control information extension according to an embodiment of the present invention;
fig. 4 is a flowchart illustrating another energy saving method based on downlink control information extension according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an energy saving system based on downlink control information extension according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an energy-saving interactive device based on downlink control information extension according to an embodiment of the present invention.
Detailed Description
For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses an energy-saving method and system based on downlink control information expansion, which can solve the problem of large energy waste caused by the fact that the PDCCH monitoring is still carried out when no information is transmitted due to periodic operation in the conventional PDCCH monitoring. Furthermore, a DRX mechanism is introduced, so that the PDCCH monitoring only occurs in an on state in one DRX period, and the PDCCH monitoring time is flexibly determined by skipping signals, thereby greatly increasing the PDCCH monitoring efficiency and effectively playing the energy-saving effect.
Example one
Referring to fig. 1, fig. 1 is a flowchart illustrating an energy saving method based on downlink control information extension according to an embodiment of the present invention. The energy saving based on the downlink control information extension can be applied to a system based on the downlink control information, and the embodiment of the invention is not limited to the system. As shown in fig. 1, the power saving method based on the downlink control information extension may include the following operations:
101. the wake-up signal is generated based on a format of the downlink control information.
For the downlink control information as one kind of implementation information that can schedule the pdcch, the format generally adopted is DCI format 2_6, and the downlink control information has multiple formats, for example, formats 0_0,0_1,1_1,1_2, etc., where 2_6 is one main implementation format. This format is used as the format of a WUS (Wake-up signal) in the Wake-up signal for waking up PDCCH monitoring in sleep. Wherein, the skip signal and the wake-up signal are in the same downlink control information format. In the invention, the existing DCI format 2_6 is extended to realize skipping and waking in the same DCI format, so that a new DCI format does not need to be introduced. As shown in fig. 2, the current DCI format 2_6 is a DCI format with a total length L composed of a 1-bit wake-up indication and an L-1-bit secondary cell dormancy indication, where the length of the second part may be 0.
102. Adding a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal;
as shown in fig. 3, a skip signal is added before the DCI format with the total length L is composed of the conventional 1-bit wake-up indication and the L-1-bit secondary cell dormancy indication, triggering of the skip signal is controlled based on a preset programming instruction, and when the skip signal is 1, the physical downlink control channel is skipped to monitor to the next operating cycle. And when the skipping signal is 0, continuing the physical downlink control channel monitoring.
103. And whether to carry out physical downlink control channel monitoring is indicated by a skipping signal.
For the physical downlink control channel monitoring mode, for example, a multi-user resource sharing mode may be adopted, and the terminal needs to search for the control signaling in the whole control area according to a certain rule. In the DCI information of the PDCCH, the user C-RNTI implicitly identifies the target user to which the DCI is transmitted, using a 16-bit CRC. In a downlink subframe, a plurality of DCIs carry out coding and rate matching processes in parallel, and scrambling, modulating, interleaving and other operations are carried out after the coded bits are multiplexed. The main purpose of interleaving is to obtain more time and frequency diversity effect, and then scrambling related to cell number is carried out, so as to randomize interference among cells.
As a preferred embodiment, a DRX (discontinuous reception) mechanism is also introduced, setting PDCCH monitoring to the on state that occurs in only one DRX cycle. And the PDCCH skipping technology is combined with a DRX mechanism, so that the detection time of the PDCCH can be determined more flexibly. Specifically, the operation cycle of downlink control channel monitoring is configured as an ON state cycle of DRX. As shown in fig. 4, the step of indicating whether to perform the physical downlink control channel monitoring through the skip signal includes: monitoring the skip indication, namely skipping the monitoring of the physical downlink control channel to the next DRX ON state period when the skip signal is 1; and monitoring a subsequent monitoring result, namely when the skipping signal is 0, continuing the physical downlink control channel monitoring.
According to the method provided by the embodiment, the problem of large energy waste caused by the fact that the PDCCH monitoring is still carried out when no information is transmitted due to periodic operation in the conventional PDCCH monitoring can be solved. Furthermore, a DRX mechanism is introduced, so that the PDCCH monitoring only occurs in an on state in one DRX period, and the PDCCH monitoring time is flexibly determined by skipping signals, thereby greatly increasing the PDCCH monitoring efficiency and effectively playing the energy-saving effect.
Example two
Referring to fig. 5, fig. 5 is a schematic structural diagram of an energy saving system based on downlink control information extension according to an embodiment of the present invention. The energy saving based on the downlink control information extension can be applied to a system based on the downlink control information, and the embodiment of the invention is not limited to the system. As shown in fig. 5, the energy saving system based on the downlink control information extension may include:
a wake-up module 201, configured to generate a wake-up signal based on a format of the downlink control information, where the wake-up signal is used to wake up a physical downlink control channel monitor in a sleep state. For the downlink control information as one kind of implementation information that can schedule the pdcch, the format generally adopted is DCI format 2_6, and the downlink control information has multiple formats, for example, formats 0_0,0_1,1_1,1_2, etc., where 2_6 is one main implementation format. This format is used as the format of a WUS (Wake-up signal) in the Wake-up signal for waking up PDCCH monitoring in sleep. Wherein, the skip signal and the wake-up signal are in the same downlink control information format. In the invention, the existing DCI format 2_6 is extended to realize skipping and waking in the same DCI format, so that a new DCI format does not need to be introduced. As shown in fig. 2, the current DCI format 2_6 is a DCI format with a total length L composed of a 1-bit wake-up indication and an L-1-bit secondary cell dormancy indication, where the length of the second part may be 0.
A skipping module 202, configured to add a skipping signal for indicating whether to skip the pdcch monitoring before the wake-up signal. And adding a skipping signal before the DCI format with the total length of L is formed by the existing 1-bit wake-up indication and the L-1-bit secondary cell dormancy indication, wherein the triggering of the skipping signal is controlled based on a preset programming program instruction, and when the skipping signal is 1, skipping the physical downlink control channel monitoring until the next operation period. And when the skipping signal is 0, continuing the physical downlink control channel monitoring.
A monitoring module 203, configured to indicate whether to perform physical downlink control channel monitoring through a skip signal; wherein, the skipping signal and the wake-up signal are in the same downlink control information format. For the physical downlink control channel monitoring mode, for example, a multi-user resource sharing mode may be adopted, and the terminal needs to search for the control signaling in the whole control area according to a certain rule. In the DCI information of the PDCCH, the user C-RNTI implicitly identifies the target user to which the DCI is transmitted, using a 16-bit CRC. In a downlink subframe, a plurality of DCIs carry out coding and rate matching processes in parallel, and scrambling, modulating, interleaving and other operations are carried out after the coded bits are multiplexed. The main purpose of interleaving is to obtain more time and frequency diversity effect, and then scrambling related to cell number is carried out, so as to randomize interference among cells.
As a preferred embodiment, the system further comprises: a DRX module 204, configured to configure an operation cycle of downlink control channel monitoring as an ON state cycle of DRX. Specifically, the operation cycle of downlink control channel monitoring is configured as an ON state cycle of DRX. As shown in fig. 4, the step of indicating whether to perform the physical downlink control channel monitoring through the skip signal includes: monitoring the skip indication, namely skipping the monitoring of the physical downlink control channel to the next DRX ON state period when the skip signal is 1; and monitoring a subsequent monitoring result, namely when the skipping signal is 0, continuing the physical downlink control channel monitoring.
The system provided by the embodiment can solve the problem that due to the periodic operation of the conventional PDCCH monitoring, when no information is transmitted, the PDCCH monitoring is still carried out, so that a large amount of energy is wasted. Furthermore, a DRX mechanism is introduced, so that the PDCCH monitoring only occurs in an on state in one DRX period, and the PDCCH monitoring time is flexibly determined by skipping signals, thereby greatly increasing the PDCCH monitoring efficiency and effectively playing the energy-saving effect.
EXAMPLE III
Referring to fig. 6, fig. 6 is a schematic structural diagram of an energy saving device based on downlink control information extension according to an embodiment of the present invention. The apparatus described in fig. 6 can be applied to a system based on downlink control information extension, and the application system of energy saving based on downlink control information extension is not limited in this embodiment of the present invention. As shown in fig. 6, the apparatus may include:
a memory 601 in which executable program code is stored;
a processor 602 coupled to a memory 601;
the processor 602 invokes executable program code stored in the memory 601 for executing the power saving method based on the downlink control information extension described in the first embodiment.
Example four
The embodiment of the invention discloses a computer-readable storage medium which stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the energy-saving method based on downlink control information extension described in the first embodiment.
EXAMPLE five
The embodiment of the invention discloses a computer program product, which comprises a non-transitory computer readable storage medium storing a computer program, and the computer program is operable to make a computer execute the energy saving method based on downlink control information extension described in the first embodiment.
The above-described embodiments are only illustrative, and the modules described as separate components may or may not be physically separate, and the components displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above detailed description of the embodiments, those skilled in the art will clearly understand that the embodiments may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. Based on such understanding, the above technical solutions may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, where the storage medium includes a Read-Only Memory (ROM), a Random Access Memory (RAM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), a One-time Programmable Read-Only Memory (OTPROM), an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc-Read-Only Memory (CD-ROM), or other disk memories, CD-ROMs, or other magnetic disks, A tape memory, or any other medium readable by a computer that can be used to carry or store data.
Finally, it should be noted that: the energy saving method and system based on downlink control information extension disclosed in the embodiments of the present invention are only preferred embodiments of the present invention, and are only used for illustrating the technical solutions of the present invention, rather than limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for saving power based on downlink control information extension, the method comprising:
generating a wake-up signal based on a format of downlink control information, wherein the wake-up signal is used for waking up a physical downlink control channel monitor in a sleep state;
adding a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal;
whether physical downlink control channel monitoring is carried out or not is indicated through the skipping signal;
wherein the skip signal and the wake-up signal are in the same downlink control information format.
2. The method of claim 1, wherein indicating whether to perform physical downlink control channel monitoring through the skip signal comprises:
when the skipping signal is 1, skipping physical downlink control channel monitoring to the next operation period;
and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
3. The downlink control information extension-based power saving method of claim 2, wherein the format of the downlink control information comprises:
the format of the downlink control information with the length of L is formed by 1-bit awakening indication and L1-bit auxiliary cell dormancy indications.
4. The downlink control information extension based power saving method according to any one of claims 1 to 3, wherein the method further comprises:
and configuring the operation cycle of downlink control channel monitoring as an ON state cycle of DRX.
5. The method of claim 4, wherein indicating whether to perform physical downlink control channel monitoring according to the skip signal comprises:
when the skipping signal is 1, skipping physical downlink control channel monitoring to the next DRX ON state period;
and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
6. An energy saving system based on downlink control information extension, the system comprising:
a wake-up module, configured to generate a wake-up signal based on a format of downlink control information, where the wake-up signal is used to wake up a physical downlink control channel monitor in a sleep state;
a skipping module, configured to add a skipping signal for indicating whether to skip physical downlink control channel monitoring before the wake-up signal;
a monitoring module, configured to indicate whether to perform physical downlink control channel monitoring through the skip signal;
wherein the skip signal and the wake-up signal are in the same downlink control information format.
7. The downlink control information extension-based power saving system of claim 6, wherein the skipping module is implemented to:
when the skipping signal is 1, skipping physical downlink control channel monitoring to the next operation period;
and when the skipping signal is 0, continuing the physical downlink control channel monitoring.
8. The downlink control information extension-based power saving system of claim 6 or 7, wherein the system further comprises:
and the DRX module is used for configuring the operation cycle of the downlink control channel monitoring to be an ON state cycle of DRX.
9. A network side device comprises a memory, a processor and a memory, wherein the memory is stored on the processor and can be used for storing the data
A running computer program; characterized in that the processor implements the steps in the method for power saving based on downlink control information extension according to any of claims 1 to 5 when executing the program.
10. A computer-readable storage medium on which a computer program is stored, characterized in that the program is processed by a processor
Implementing the steps in the method for energy saving based on downlink control information extension according to any of claims 1 to 5 when executed.
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| WO2024065770A1 (en) * | 2022-09-30 | 2024-04-04 | Shenzhen Tcl New Technology Co., Ltd. | Wireless communication method and related devices |
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Application publication date: 20210129 |