CN111726884B - Indication method and device - Google Patents
Indication method and device Download PDFInfo
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- CN111726884B CN111726884B CN201910212876.5A CN201910212876A CN111726884B CN 111726884 B CN111726884 B CN 111726884B CN 201910212876 A CN201910212876 A CN 201910212876A CN 111726884 B CN111726884 B CN 111726884B
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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
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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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
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
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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
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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 embodiment of the invention provides an indication method and equipment, wherein the method comprises the following steps: when the CFRA resources can not meet the requirements of a plurality of terminals which are switched, indication information is sent to the plurality of terminals, and the indication information explicitly or implicitly indicates the starting time of the plurality of terminals for executing the CBRA process. In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are indicated by the indication information in an explicit or implicit manner to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, so that the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to an indicating method and indicating equipment.
Background
The Random Access (RA) procedure includes the following application scenarios:
(1) initial access from a Radio Resource Control IDLE state (RRC _ IDLE), and Radio Resource Control (RRC) connection establishment;
(2) re-accessing after the radio link fails, namely, reestablishing RRC connection;
(3) synchronizing with a target cell in the switching process;
(4) downlink data arrives and a terminal air interface is in an uplink out-of-step state;
(5) when uplink data arrives and a terminal air interface is in an uplink out-of-step state, or the uplink data is not out-of-step but needs to apply for uplink resources through an RA process;
(6) for auxiliary positioning, the network obtains Timing Advance (TA) by using an RA procedure.
Contention-based Random Access (CBRA) is applicable to other scenarios than assisted positioning, where for scenarios of RRC connection establishment, RRC connection reestablishment, and uplink data arrival, the RA procedure is triggered autonomously by the terminal; for the handover and downlink data arrival scenarios, the base station instructs the terminal to initiate the RA procedure, and in this case, the base station generally preferentially selects a contention-free Random Access (CFRA), and when the CFRA resources are insufficient, the base station instructs the terminal to initiate the CBRA procedure.
In the existing switching scenario, when the CFRA resources are not sufficiently allocated, a terminal initiates a CBRA process according to an RRC signaling indication of a base station, and currently, there is no processing method for initiating CBRA to multiple terminals at the same time. The multiple terminals initiate CBRA at the same time, which will cause collision and collision in the transmission of Random Access Preamble (RAP) of message 1(Msg1), resulting in increased power consumption of the terminals, affecting the smooth operation of the CBRA process, and further affecting the time delay of the whole synchronization process.
Disclosure of Invention
The embodiment of the invention provides an indication method and equipment, which solve the problem of collision when a plurality of terminals execute a CBRA process simultaneously.
According to a first aspect of the embodiments of the present invention, there is provided an indication method applied to a network device, the method including: when the non-contention random access CFRA resources cannot meet the requirements of a plurality of terminals which are switched, indication information is sent to the plurality of terminals, and the indication information explicitly or implicitly indicates the starting time of the plurality of terminals for executing a contention-based random access CBRA process.
Optionally, before the indication information occurs to the terminal where the handover occurs, the method further includes: and informing the media access control MAC layer of the relevant information of the terminal needing to execute the CBRA process through Radio Resource Control (RRC) signaling.
Optionally, the sending, to the plurality of terminals, indication information explicitly indicating or implicitly indicating a start time for the plurality of terminals to perform a contention based random access CBRA procedure includes: and sending the indication information to the plurality of terminals through a Physical Downlink Control Channel (PDCCH), wherein the indication information implicitly indicates the starting time of the plurality of terminals to execute CBRA, and the PDCCH is scrambled by a predefined Radio Network Temporary Identifier (RNTI).
Optionally, the indication information includes: the fallback indicates a BI parameter for the plurality of terminals to determine a starting time to perform CBRA.
Optionally, the indication information is downlink control information DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
According to a second aspect of the embodiments of the present invention, there is provided an indication method applied to a terminal, the method including: receiving indication information from a network device, the indication information explicitly indicating or implicitly indicating a start time at which the terminal performs a CBRA procedure; and determining the starting time for executing the CBRA process according to the indication information.
Optionally, the receiving, from the network device, indication information explicitly indicating or implicitly indicating a start time of the terminal performing a CBRA procedure includes: receiving the indication information sent by the network equipment through a PDCCH, wherein the indication information implicitly indicates the starting time of the terminal to execute CBRA, and the PDCCH is scrambled by a predefined RNTI.
Optionally, the indication information includes: a BI parameter for the terminal to determine a start time for performing CBRA.
Optionally, the indication information is DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
Optionally, the determining, according to the indication information, a start time for performing a CBRA procedure includes: determining a second numerical value according to the value of the BI parameter and the first numerical value; determining a start time for the execution of the CBRA procedure based on the second value.
According to a third aspect of the embodiments of the present invention, there is provided a network device, including: the first transceiver is configured to send indication information to a plurality of terminals when CFRA resources cannot meet requirements of the plurality of terminals for handover, where the indication information explicitly or implicitly indicates a start time for the plurality of terminals to perform a CBRA procedure.
Optionally, the first processor is configured to notify, through RRC signaling, relevant information of a terminal that needs to perform a CBRA procedure to the MAC layer.
Optionally, the first transceiver is further configured to send the indication information to the plurality of terminals through a PDCCH, where the indication information implicitly indicates a start time for the plurality of terminals to perform CBRA, and the PDCCH is scrambled by a predefined RNTI.
Optionally, the indication information includes: a BI parameter for the plurality of terminals to determine a start time for performing a CBRA.
Optionally, the indication information is DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
According to a fourth aspect of the embodiments of the present invention, there is provided a terminal, including: a second transceiver and a second processor, wherein the second transceiver is configured to receive indication information from a network device, the indication information explicitly indicating or implicitly indicating a start time for the terminal to perform a CBRA procedure; and the second processor is used for determining the starting time for executing the CBRA process according to the indication information.
Optionally, the second transceiver is further configured to receive, through a PDCCH, the indication information sent by the network device, where the indication information implicitly indicates a starting time for the terminal to perform CBRA, and the PDCCH is scrambled by a predefined RNTI.
Optionally, the indication information includes: a BI parameter for the terminal to determine a start time for performing CBRA.
Optionally, the indication information is DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
Optionally, the second processor is configured to determine a second value according to the value of the BI parameter and the first value; the second processor is further configured to determine a start time for the execution of the CBRA procedure based on the second value.
According to a fifth aspect of embodiments of the present invention, there is provided a communication device comprising a processor, a memory, and a program stored on the memory and executable on the processor, the program implementing the steps of the indicating method according to the first aspect or the steps of the indicating method according to the second aspect when executed by the processor.
According to a sixth aspect of embodiments of the present invention, there is provided a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the indication method according to the first aspect or the steps of the indication method according to the second aspect
In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are explicitly or implicitly indicated by the indication information to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a block diagram of a wireless communication system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an indication method according to an embodiment of the present invention;
FIG. 3 is a second flowchart illustrating an indication method according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention;
fig. 5 is a schematic flowchart of a terminal according to an embodiment of the present invention;
fig. 6 is a flowchart of a communication device according to an embodiment of the present invention.
Detailed Description
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 some, not all, embodiments of the present invention. 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.
In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
The technology described herein is not limited to a 5th-generation (5G) system and a later-evolution communication system, and is not limited to an LTE/LTE evolution (LTE-a) system, and may also be used for various wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems.
The terms "system" and "network" are often used interchangeably. CDMA systems may implement Radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), and so on. UTRA includes Wideband CDMA (Wideband Code Division Multiple Access, WCDMA) and other CDMA variants. TDMA systems may implement radio technologies such as Global System for Mobile communications (GSM). The OFDMA system may implement radio technologies such as Ultra Mobile Broadband (UMB), evolved UTRA (Evolution-UTRA, E-UTRA), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are parts of the Universal Mobile Telecommunications System (UMTS). LTE and higher LTE (e.g., LTE-A) are new UMTS releases that use E-UTRA. UTRA, E-UTRA, UMTS, LTE-A, and GSM are described in documents from an organization named "third Generation Partnership Project" (3 GPP). CDMA2000 and UMB are described in documents from an organization named "third generation partnership project 2" (3GPP 2). The techniques described herein may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies.
Referring to fig. 1, an embodiment of the present invention provides a wireless communication system. As shown in fig. 1, the wireless communication system may include: a network side device 11 and a user device 12. In practical applications, the connections between the above devices may be wireless connections, and fig. 1 illustrates the connections between the devices by solid lines for convenience and convenience in visual representation.
It should be noted that the communication system may include a plurality of user equipments, and the network side device may communicate (transmit signaling or transmit data) with the plurality of user equipments.
The network side device may be a network side device (e.g., a next generation base station (gNB) or a Transmission and Reception Point (TRP)) in a 5G (Fifth-generation mobile communication technology) system.
The user equipment may be a Mobile phone, a tablet Computer, a notebook Computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, a Personal Digital Assistant (PDA), or the like.
It should be noted that, for the handover scenario, if only one terminal is handed over, if the CFRA resource is sufficient, the network device instructs the terminal to execute the CFRA procedure through the RRC signaling, otherwise, instructs the terminal to execute the CBRA procedure; if there are multiple terminals to perform handover, if the CFRA resources are sufficient, the network device instructs the multiple terminals to perform the CFRA procedure through RRC signaling.
Referring to fig. 2, an embodiment of the present invention provides an indication method, where an execution subject of the method is a network device, and the method includes the following specific steps:
step 201: when the CFRA resources cannot meet the requirements of a plurality of terminals for switching, indication information is sent to the plurality of terminals, and the indication information explicitly or implicitly indicates the starting time of the plurality of terminals for executing the CBRA process.
In the embodiment of the invention, when the CFRA resources cannot meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals to indicate the plurality of terminals to execute the CBRA process, and the indication information explicitly indicates or implicitly indicates the starting time of the plurality of terminals to execute the CBRA process. The indication may be to directly send the start time of the designated CBRA procedure to each terminal, and the implicit indication may be to send an intermediate parameter to each terminal, and the terminal randomly determines the start time of the CBRA procedure executed by the terminal according to the intermediate parameter.
For example: the method comprises the steps that 5 terminals need to execute the CBRA process, the 5 terminals receive indication information from network equipment, and each terminal randomly determines the starting time for executing the CBRA process according to the indication information, so that the starting time for executing the CBRA process by at least part of the 5 terminals is different, and further collision generated when the terminals execute the CBRA process is reduced.
Optionally, before the network device sends the indication information to the terminal, the network device notifies, through an RRC signaling, a Media Access Control (MAC) layer of relevant information of the terminal that needs to perform the CBRA procedure, where the relevant information may be an Identity (ID) of the terminal, and the relevant information may also be other information. In this way, the MAC layer can know information of the terminal performing the CBRA procedure.
Optionally, the Network device sends, to the plurality of terminals that are handed over, indication information implicitly indicating start times of CBRA execution performed by the plurality of terminals through a Physical Downlink Control Channel (PDCCH), where the PDCCH is scrambled by a predefined Radio Network Temporary Identifier (RNTI).
In the embodiment of the present invention, an RNTI is predefined, and the predefined RNTI may be referred to as Handover RNTI (HO-RNTI).
It can be understood that, when the network device interacts with the terminal, the network device scrambles the PDCCH through the RNTI and sends information to the terminal, and accordingly the terminal descrambles through the RNTI to obtain the information sent by the network device. Different RNTIs correspond to different execution procedures. In the existing handover scenario, there is no processing method for initiating CBRA procedures for multiple terminals, and therefore there is no corresponding RNTI, so an RNTI, that is, an HO-RNTI, is predefined for this scenario.
The indication information may include a Backoff Indicator (BI) used for determining a start time for performing CBRA for a plurality of terminals where handover occurs.
Specifically, the indication Information may be Downlink Control Information (DCI), and the BI parameter may be a Backoff Indicator field defined in the DCI, which is scrambled by a predefined RNTI (HO-RNTI).
The length of the Backoff Indicator field may be 4bits, and the length of the Backoff Indicator field is not specifically limited in the embodiments of the present invention.
In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are explicitly or implicitly indicated by the indication information to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Further, by reducing the collision, the power consumption of the terminal can be reduced.
Referring to fig. 3, an embodiment of the present invention provides an indication method, where an execution subject of the method is a terminal, and the method includes the following specific steps:
step 301: receiving indication information from the network equipment, wherein the indication information explicitly indicates or implicitly indicates the starting time of the terminal to execute the CBRA process;
in the embodiment of the present invention, the indication information is used to explicitly or implicitly indicate the start time of the CBRA procedure performed by the plurality of terminals. The display indication may be that the network device directly sends the start time of the designated CBRA procedure to the terminal, and the implicit indication may be that the network device sends an intermediate parameter to the terminal, and the terminal randomly determines the start time of the CBRA procedure itself according to the intermediate parameter.
For example: the method comprises the steps that 5 terminals need to execute the CBRA process, the 5 terminals receive indication information from network equipment, and each terminal randomly determines the starting time for executing the CBRA process according to the indication information, so that the starting time for executing the CBRA process by at least part of the 5 terminals is different, and further collision generated when the terminals execute the CBRA process is reduced.
Optionally, the terminal receives indication information from the network device through a PDCCH implicitly indicating a starting time for the terminal to perform CBRA, the PDCCH being scrambled by a predefined RNTI.
In the embodiment of the invention, a Radio Network Temporary Identity (RNTI) is predefined, and the RNTI can be called HO-RNTI.
It can be understood that, when the network device interacts with the terminal, the network device scrambles the PDCCH through the RNTI and sends information to the terminal, and accordingly the terminal descrambles through the RNTI to obtain the information sent by the network device. Different RNTIs correspond to different execution procedures. In the existing handover scenario, there is no processing method for initiating CBRA procedures for multiple terminals, and therefore there is no corresponding RNTI, so an RNTI, that is, an HO-RNTI, is predefined for this scenario.
The indication information includes a BI parameter for determining a starting time for performing CBRA for a plurality of terminals where handover occurs.
Specifically, the indication information is DCI, and the BI parameter is a Backoff Indicator field defined in the DCI, which is scrambled by a predefined RNTI (HO-RNTI).
Optionally, the length of the Backoff Indicator field is 4bits, and the length of the Backoff Indicator field is not specifically limited in this embodiment of the present invention.
Step 302: determining a starting time for executing the CBRA process according to the indication information;
in the embodiment of the invention, the terminal determines the starting time of the CBRA execution process according to the indication information sent by the network equipment.
Specifically, the indication information is DCI, the indication information includes a BI parameter, and the determining, by the terminal, a start time for performing the CBRA procedure includes the following steps:
(1) determining a second value according to the value of the BI parameter and the first value;
in the embodiment of the present invention, the terminal randomly selects the second value between the value of the BI parameter and the first value, for example: the value of the BI parameter may be 10, the first value may be 0, the second value may be any number from 0 to 10, and the value of the BI parameter and the first value may also be other values.
(2) A start time for performing the CBRA procedure is determined based on the second value.
In the embodiment of the invention, the terminal determines the second numerical value as the self back-off value, and determines the time needing back-off before the CBRA process is executed according to the back-off value. Take the second value as 5 as an example: and the terminal determines the backoff value to be 5 according to the second value, and further determines the time required for backoff to be 5ms before the CBRA process is executed.
It will be appreciated that the second value chosen by each terminal may be different, as the second value is chosen randomly. For example: the first terminal selects the second value of 5, the second terminal selects the second value of 7, the third terminal selects the second value of 9, and so on.
Therefore, different terminals have different back-off times before the CBRA process is executed through the randomly selected second value, so that the situation that a plurality of terminals execute the CBRA process at the same time is avoided as much as possible, and generated collision is reduced.
In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are explicitly or implicitly indicated by the indication information to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Further, by reducing the collision, the power consumption of the terminal can be reduced.
Referring to fig. 4, an embodiment of the present invention provides a network device 400, including: a first transceiver 401 and a first processor 402;
the first transceiver 401 is configured to send, to a plurality of terminals where handover occurs, indication information when CFRA resources cannot meet requirements of the plurality of terminals, where the indication information explicitly indicates or implicitly indicates start times of CBRA procedures executed by the plurality of terminals.
Optionally, the first processor 402 is configured to notify, through RRC signaling, the MAC layer of information about a terminal that needs to perform a CBRA procedure.
Optionally, the first transceiver 401 is further configured to send the indication information to the plurality of terminals through a PDCCH, where the indication information implicitly indicates a start time for the plurality of terminals to perform CBRA, and the PDCCH is scrambled by a predefined RNTI.
Optionally, the indication information includes: a BI parameter for the plurality of terminals to determine a start time for performing a CBRA.
Optionally, the indication information is DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are explicitly or implicitly indicated by the indication information to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Further, by reducing the collision, the power consumption of the terminal can be reduced.
Referring to fig. 5, an embodiment of the present invention provides a terminal 500, including: a second transceiver 501 and a second processor 502;
wherein, the second transceiver 501 is configured to receive indication information from a network device, where the indication information explicitly or implicitly indicates a start time for the terminal to perform a CBRA procedure;
the second processor 502 is configured to determine a starting time for performing a CBRA procedure according to the indication information.
Optionally, the second transceiver 501 is further configured to receive the indication information from the network device through a PDCCH, where the PDCCH is scrambled by a predefined RNTI.
Optionally, the indication information includes: a BI parameter for the terminal to determine a start time for performing CBRA.
Optionally, the indication information is DCI, the BI parameter is a BI field in the DCI, and the DCI is scrambled by the predefined RNTI.
Optionally, the second processor 502 is configured to determine a second value according to the value of the BI parameter and the first value;
the second processor 502 is further configured to determine a starting time for the execution of the CBRA procedure according to the second value.
In the embodiment of the invention, when CFRA resources can not meet the requirements of a plurality of terminals which are switched, the network equipment sends the indication information to the plurality of terminals, the plurality of terminals are explicitly or implicitly indicated by the indication information to execute the starting time of the CBRA process, when the plurality of terminals initiate the CBRA process, at least part of the terminals initiate the CBRA process at different time, the generated collision and time delay are reduced, and the CBRA process can be smoothly carried out.
Further, by reducing the collision, the power consumption of the terminal can be reduced.
Referring to fig. 6, another communication device 600 is provided in an embodiment of the present invention, including: a processor 601, a transceiver 602, a memory 603, and a bus interface.
Among other things, the processor 601 may be responsible for managing the bus architecture and general processing. The memory 603 may store data used by the processor 601 in performing operations.
In this embodiment of the present invention, the communication device 600 may further include: a program stored on the memory 603 and executable on the processor 601, which when executed by the processor 601, performs the steps of the method provided by embodiments of the present invention.
In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 603 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further by the embodiments. The bus interface provides an interface. The transceiver 602 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the method embodiments, and can achieve the same technical effects, and in order to avoid repetition, the details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element identified by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (22)
1. An indication method applied to a network device, the method comprising:
when non-contention random access (CFRA) resources cannot meet the requirements of a plurality of terminals which are switched, indication information is sent to the plurality of terminals, the indication information explicitly or implicitly indicates the starting time of the plurality of terminals for executing a contention-based random access (CBRA) process, and the starting time of at least part of the terminals for executing the CBRA process is different.
2. The method of claim 1, wherein prior to the indication message being generated to the terminal where the handover occurred, the method further comprises:
and informing the media access control MAC layer of the relevant information of the terminal needing to execute the CBRA process through Radio Resource Control (RRC) signaling.
3. The method of claim 1, wherein the sending indication information to the plurality of terminals, the indication information explicitly indicating or implicitly indicating a start time for the plurality of terminals to perform a contention-based random access (CBRA) procedure comprises:
and sending the indication information to the plurality of terminals through a Physical Downlink Control Channel (PDCCH), wherein the indication information implicitly indicates the starting time of the plurality of terminals for executing CBRA, and the PDCCH is scrambled by a predefined Radio Network Temporary Identifier (RNTI).
4. The method of claim 3, wherein the indication information comprises: the fallback indicates a BI parameter for the plurality of terminals to determine a starting time to perform CBRA.
5. The method of claim 4, wherein the indication information is Downlink Control Information (DCI), wherein the BI parameter is a BI field in the DCI, and wherein the DCI is scrambled by the predefined RNTI.
6. An indication method applied to a terminal, the method comprising:
receiving indication information from a network device, wherein the indication information explicitly or implicitly indicates starting times of a plurality of terminals to execute a CBRA (Convergence random Access) process, and the starting times of at least some terminals in the plurality of terminals to execute the CBRA process are different;
and determining the starting time for executing the CBRA process according to the indication information.
7. The method of claim 6, wherein receiving the indication information from the network device comprises:
receiving the indication information from the network device through a PDCCH, the PDCCH being scrambled by a predefined RNTI.
8. The method of claim 7, wherein the indication information comprises: a BI parameter for the terminal to determine a start time for performing CBRA.
9. The method of claim 8, wherein the indication information is DCI, wherein the BI parameter is a BI field in the DCI, and wherein the DCI is scrambled by the predefined RNTI.
10. The method of claim 8, wherein the determining a starting time for performing a CBRA procedure according to the indication information comprises:
determining a second numerical value according to the value of the BI parameter and the first numerical value;
and determining the starting time of the execution of the CBRA process according to the second value.
11. A network device, comprising: a first transceiver and a first processor, wherein,
the first transceiver is configured to send, to a plurality of terminals that are handed over when CFRA resources cannot meet requirements of the plurality of terminals, indication information that explicitly or implicitly indicates start times at which the plurality of terminals perform a CBRA procedure, where the start times at which at least some of the plurality of terminals perform the CBRA procedure are different.
12. The network device of claim 11,
the first processor is configured to notify, through RRC signaling, the MAC layer of information related to a terminal that needs to perform a CBRA procedure.
13. The network device of claim 11,
the first transceiver is further configured to send the indication information to the plurality of terminals through a PDCCH, the indication information implicitly indicating a start time for the plurality of terminals to perform CBRA, and the PDCCH is scrambled by a predefined RNTI.
14. The network device of claim 13, wherein the indication information comprises: a BI parameter for the plurality of terminals to determine a start time for performing a CBRA.
15. The network device of claim 14, wherein the indication information is DCI, wherein the BI parameter is a BI field in the DCI, and wherein the DCI is scrambled by the predefined RNTI.
16. A terminal, comprising: a second transceiver and a second processor, wherein,
the second transceiver is configured to receive indication information from a network device, where the indication information explicitly or implicitly indicates start times of multiple terminals to perform a CBRA procedure, and the start times of at least some terminals in the multiple terminals to perform the CBRA procedure are different;
and the second processor is used for determining the starting time for executing the CBRA process according to the indication information.
17. The terminal of claim 16,
the second transceiver is further configured to receive the indication information from the network device through a PDCCH, the PDCCH being scrambled by a predefined RNTI.
18. The terminal according to claim 17, wherein the indication information comprises: a BI parameter for the terminal to determine a start time for performing CBRA.
19. The terminal of claim 18, wherein the indication information is DCI, wherein the BI parameter is a BI field in the DCI, and wherein the DCI is scrambled by the predefined RNTI.
20. The terminal of claim 18,
the second processor is used for determining a second numerical value according to the value of the BI parameter and the first numerical value;
the second processor is further configured to determine a start time for the execution of the CBRA procedure according to the second value.
21. A communication device comprising a processor, a memory and a program stored on the memory and executable on the processor, the program, when executed by the processor, implementing the steps of the indication method of any one of claims 1 to 5 or the steps of the indication method of any one of claims 6 to 10.
22. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the indication method according to one of the claims 1 to 5 or the steps of the indication method according to one of the claims 6 to 10.
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