CN112995970A - Method and device for emergency communication in wireless communication system - Google Patents
Method and device for emergency communication in wireless communication system Download PDFInfo
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- CN112995970A CN112995970A CN201911309286.0A CN201911309286A CN112995970A CN 112995970 A CN112995970 A CN 112995970A CN 201911309286 A CN201911309286 A CN 201911309286A CN 112995970 A CN112995970 A CN 112995970A
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- 238000004891 communication Methods 0.000 title claims abstract description 133
- 238000000034 method Methods 0.000 title claims abstract description 37
- 230000004044 response Effects 0.000 claims description 46
- 230000011664 signaling Effects 0.000 claims description 34
- 238000012545 processing Methods 0.000 claims description 16
- 238000013468 resource allocation Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/002—Transmission of channel access control information
- H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Business, Economics & Management (AREA)
- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Environmental & Geological Engineering (AREA)
- Public Health (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a device for emergency communication in a wireless communication system.A terminal sends a random access request carrying an emergency communication indicating bit to a base station; a base station allocates a temporary ID for a terminal and allocates resources for the terminal according to the temporary ID; in the process of capability negotiation between the emergency communication terminal and the base station, the emergency communication terminal can directly and quickly access the network without performing an additional authentication flow on the terminal.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for emergency communication in a wireless communication system.
Background
In the wireless communication system realized based on the wireless access technology network, when various communication services are provided, a user is mostly based on a certain access authentication process when accessing the network; meanwhile, the resource sharing of the wireless communication system by multiple users is carried out based on a certain resource allocation strategy. Such a system would face the following problems in the face of emergency communication needs in certain emergency situations: when the service load is large, the emergency communication request may not be accessed, a certain delay exists in the complex signaling process of the network access authentication process, so that the emergency communication service cannot be initiated in time, and the problems of large overall service load of multiple users, untimely scheduling of the emergency communication service and the like also exist after the network access. The existing communication system can not meet the special communication requirements of the system in some emergency situations.
In order to meet the requirements of an emergency communication system and meet the emergency communication function by a relatively simple technical scheme, the invention provides a method for performing emergency communication in a wireless communication system.
Disclosure of Invention
In view of this, the present invention provides a method and an apparatus for emergency communication in a wireless communication system, which can ensure that an emergency communication service can be initiated quickly and timely, and realize quick network access of an emergency communication terminal by a simple signaling flow, thereby ensuring quick establishment of the emergency communication service.
The invention provides a method for emergency communication in a wireless communication system, which comprises the following steps:
reserving a part of reserved access resources in system resources by a base station, wherein the reserved access resources are used for processing an emergency communication request;
a terminal sends a random access request to a base station, wherein the random access request carries an emergency communication indicating bit;
the base station receives the random access request and determines that the terminal is carrying out emergency communication service; distributing a temporary ID for a terminal, and recording that the terminal is an emergency communication terminal;
the base station sends an access response to the terminal, the access response carries the temporary ID, and the base station allocates resources for the terminal according to the temporary ID;
and the emergency communication terminal and the base station carry out capability negotiation, and the terminal directly accesses the network.
The capability negotiation process comprises:
the terminal receives an access response sent by the base station and sends a capability negotiation request to the base station;
the base station receives the capability negotiation request and sends a capability negotiation response signaling to the terminal, wherein the capability negotiation response signaling comprises a direct network access identifier which is used for indicating the terminal to directly access the network;
the terminal receives the capability negotiation response signaling and completes network access;
and after the terminal completes network access, the base station sets the emergency communication terminal as the highest priority, and dispatches and distributes system resources for the emergency communication terminal by using the highest priority.
When the system resource is insufficient, the base station removes the low-priority service scheduling, and ensures the resource allocation of the emergency communication service.
A base station for emergency communication in a wireless communication system, comprising:
the receiving module is used for receiving a random access request sent by a terminal;
the processing module is used for determining that the terminal is carrying out the emergency communication service according to the random access request;
the processing module is further configured to allocate a temporary ID to the terminal, allocate resources to the terminal according to the temporary ID, and record that the terminal is an emergency communication terminal;
a sending module, configured to send an access response to the terminal, where the access response carries the temporary ID;
the receiving module is further configured to receive a capability negotiation request sent by the terminal;
the sending module is further configured to send a capability negotiation response signaling to the terminal, where the capability negotiation response signaling includes a direct network access identifier, and the direct network access identifier is used to indicate that the terminal directly accesses the network.
The base station reserves a part of reserved access resources in system resources, and the reserved access resources are used for processing emergency communication requests.
The processing module is further configured to set the emergency communication terminal to communicate with the highest priority.
And the scheduling module is used for scheduling and allocating resources according to the priority of the terminal.
A terminal for emergency communication in a wireless communication system, comprising:
a sending module, configured to send a random access request to a base station, where the random access request carries an "emergency communication" indicator bit;
a receiving module, configured to receive an access response sent by a base station;
the sending module is further configured to send a capability negotiation request to the base station;
the receiving module is further configured to receive a capability negotiation response signaling sent by the base station, and confirm that network access is completed according to the capability negotiation response signaling.
The beneficial effects obtained by the invention are as follows:
1. in the invention, the base station reserves part of access resources to ensure the access of the emergency communication terminal service;
2. the emergency communication terminal does not need to perform complex signaling flows such as identity authentication and the like, can quickly complete network access by using a simpler signaling flow, and ensures quick establishment of emergency communication services.
3. The invention can ensure the resource allocation of the emergency communication service by setting the emergency communication terminal with the highest priority scheduling resource.
For the purposes of the foregoing and related ends, the one or more embodiments include the features hereinafter fully described and particularly pointed out in the claims. The following description and the annexed drawings set forth in detail certain illustrative aspects and are indicative of but a few of the various ways in which the principles of the various embodiments may be employed. Other benefits and novel features will become apparent from the following detailed description when considered in conjunction with the drawings and the disclosed embodiments are intended to include all such aspects and their equivalents.
Drawings
Fig. 1 is a flowchart of a method for emergency communication in a wireless communication system according to the present invention;
fig. 2 is a signal flow diagram for emergency communication in a wireless communication system provided by the present invention;
fig. 3 is a flowchart of a method for negotiating the capability between an emergency communication terminal and a base station according to the present invention;
fig. 4 is a schematic diagram illustrating an apparatus for emergency communication in a wireless communication system according to the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments of the invention may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed.
Example one
An embodiment of the present invention provides a method for emergency communication in a wireless communication system, which may be applied to a bidirectional broadcast communication system implemented based on a radio access technology network, and the method is mainly applied to an interaction process between a base station and a terminal, and hereinafter, a specific implementation process of the present invention in the wireless communication system is described with the base station as an execution subject, as shown in fig. 1, the method includes:
reserving a part of access resources in system resources, wherein the reserved part of access resources are used for processing an accessed emergency communication request;
in the present two-way broadcast communication system, when providing various communication services, emergency communication requests can not be accessed due to large service load when meeting emergency communication requirements under certain emergency situations.
Fig. 2 shows a signal interaction process between a terminal and a base station:
s101, a terminal sends a random access request to a base station, wherein the random access request carries an emergency communication indicator bit;
and the terminal for emergency communication sends a random access request through the reserved access resource, wherein the random access request carries a cell access type field and is 'emergency communication'.
S102, the base station receives the random access request and determines that the terminal is carrying out emergency communication service; distributing a temporary ID for a terminal, and recording that the terminal is an emergency communication terminal;
s103, the base station sends an access response to the terminal, the access response carries the temporary ID, and the base station allocates resources for the terminal according to the temporary ID;
specifically, after receiving an access request of a terminal, a base station finds that an access type field carried in the access request is 'emergency communication', and the base station allocates a temporary ID for subsequent service for the terminal; sending an access response to the terminal, wherein the access response carries the temporary ID; and the subsequent service allocates resources to the terminal through the temporary ID.
And S104, the emergency communication terminal and the base station carry out capability negotiation and indicate the emergency communication terminal to directly access the network.
In the capability negotiation process, the terminal does not need to carry out an additional authentication flow so as to realize quick network access;
specifically, as shown in fig. 3, the capability negotiation process includes:
s104a, the terminal receives an access response sent by the base station and sends a capability negotiation request to the base station;
it should be noted that, in the prior art, at this time, a series of signaling flows are required to perform an identity authentication process to realize terminal network access, and a subsequent identity authentication process is not required in the present application.
S104b, the base station receives the capability negotiation request and sends a capability negotiation response signaling to the terminal, wherein the capability negotiation response signaling comprises a direct network access identifier which is used for indicating the terminal to directly access the network;
optionally, the direct network access identifier may be the temporary ID, and indicates that the terminal device does not need to perform a subsequent identity authentication process, and the emergency communication terminal directly accesses the network;
optionally, the direct network access identifier in the response signaling may be an "identity authentication unnecessary" field, and is used to indicate that the terminal device does not need to perform a subsequent identity authentication process, and directly accesses the network.
S104c, the terminal receives the capability negotiation response signaling and completes network access;
the terminal receives the capability negotiation response signaling, the capability negotiation response signaling carries a direct network access identifier, the terminal does not initiate an authentication and authentication related signaling flow, and the terminal confirms that the network access flow is successful and performs data transmission.
And S105, after the terminal completes network access, the base station sets the emergency communication terminal to be the highest priority, and dispatches and distributes system resources for the emergency communication terminal by using the highest priority.
Further, when the system resources are insufficient, the base station removes the low-priority service scheduling, and ensures the resource allocation of the emergency communication service.
Example two
The present invention also provides an apparatus for emergency communication in a wireless broadcast communication system, as shown in fig. 4, comprising:
a base station 10, reserving a part of reserved access resources in system resources, wherein the reserved access resources are used for processing an accessed emergency communication request;
in the present two-way broadcast communication system, when providing various communication services, the emergency communication request can not be accessed because of large service load when meeting the emergency communication requirement under some emergency situations, the base station of the invention reserves part of access resources in the system resources to ensure the access of the emergency communication terminal service;
a receiving module 11, configured to receive a random access request sent by a terminal performing emergency communication;
a terminal for emergency communication sends a random access request through the reserved access resource, wherein the random access request carries an emergency communication indicating bit;
the processing module 12 is configured to determine that the terminal is performing an emergency communication service according to the random access request;
the processing module 12 is further configured to allocate a temporary ID to the terminal, allocate resources to the terminal according to the temporary ID, and record that the terminal is an emergency communication terminal;
a sending module 13, configured to send an access response to the terminal, where the access response carries a temporary ID allocated to the terminal by the processing module;
the receiving block 11 is further configured to receive a capability negotiation request sent by a terminal;
the sending module 13 is further configured to send a capability negotiation response signaling to the terminal, where the capability negotiation response signaling includes a direct network access identifier, and the direct network access identifier is used to indicate that the terminal directly accesses a network;
optionally, the direct network access identifier may be the temporary ID, and indicates that the terminal device does not need to perform a subsequent identity authentication process, and the emergency communication terminal directly accesses the network;
optionally, the direct network access identifier in the response signaling may be an "identity authentication unnecessary" field, and is used to indicate that the terminal device does not need to perform a subsequent identity authentication process, and directly accesses the network.
The processing module 12 is further configured to set the emergency communication terminal to a highest priority;
and the scheduling module 14 is configured to perform resource allocation on the terminal according to the priority of the terminal.
After the terminal accesses the network, the base station sets the communication of the emergency communication terminal as the highest priority, and provides the scheduling allocation of system resources for the terminal by using the highest priority;
further, when the base station is faced with insufficient resources, the low-priority service scheduling is removed, and the resource allocation of the emergency communication service is ensured.
A terminal 20 for emergency communication in a wireless broadcast communication system, the terminal 20 comprising:
a sending module 21, configured to send a random access request to a base station, where the random access request carries an "emergency communication" indicator bit;
the sending module 21 is further configured to send a capability negotiation request to the base station 10;
a receiving module 22, configured to receive an access response sent by the base station; receiving a temporary ID sent by a base station;
the receiving module 22 is further configured to receive a capability negotiation response signaling sent by the base station, and confirm that network access is completed according to the capability negotiation response signaling.
The receiving module 22 receives a capability negotiation response signaling sent by the base station; the capability negotiation response signaling carries a direct network access identifier, the terminal 20 does not initiate an authentication and authorization related signaling flow, and the terminal considers that the network access flow is successful at this time and performs data transmission.
The application provides a method and a device for emergency communication in a wireless broadcast communication system, wherein certain resources are reserved through the system to ensure the access of emergency communication terminal services; the network access can be quickly finished by a simpler signaling flow, and the quick establishment of the emergency communication service is ensured; by setting the highest priority scheduling resource for the emergency communication terminal, the resource allocation of the emergency communication service can be ensured.
Those of skill in the art will understand that the various exemplary method steps and apparatus elements described in connection with the embodiments disclosed herein can be implemented as electronic hardware, software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative steps and elements have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method described in connection with the embodiments disclosed above may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a subscriber station. In the alternative, the processor and the storage medium may reside as discrete components in a subscriber station.
The disclosed embodiments are provided to enable those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the scope or spirit of the invention. The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method for emergency communication in a wireless communication system, comprising:
a terminal sends a random access request to a base station, wherein the random access request carries an emergency communication indicating bit;
the base station receives the random access request and determines that the terminal is carrying out emergency communication service; distributing a temporary ID for a terminal, and recording that the terminal is an emergency communication terminal;
the base station sends an access response to the terminal, the access response carries the temporary ID, and the base station allocates resources for the terminal according to the temporary ID;
and the emergency communication terminal and the base station carry out capability negotiation and indicate the emergency communication terminal to directly access the network.
2. The emergency communication method according to claim 1,
the base station reserves part of reserved access resources in system resources, and the reserved access resources are used for processing the emergency communication request.
3. The emergency communication method of claim 1, wherein the capability negotiation procedure comprises:
the terminal receives an access response sent by the base station and sends a capability negotiation request to the base station;
the base station receives the capability negotiation request and sends a capability negotiation response signaling to the terminal, wherein the capability negotiation response signaling comprises a direct network access identifier which is used for indicating the terminal to directly access the network;
and the terminal receives the capability negotiation response signaling and completes network access.
4. The emergency communication method according to claim 1,
and after the terminal completes network access, the base station sets the emergency communication terminal as the highest priority, and dispatches and distributes system resources for the emergency communication terminal by using the highest priority.
5. The method of emergency communication of claim 4, further comprising:
when the system resource is insufficient, the base station removes the low-priority service scheduling, and ensures the resource allocation of the emergency communication service.
6. A base station for emergency communication in a wireless communication system, comprising:
the receiving module is used for receiving a random access request sent by a terminal;
the processing module is used for determining that the terminal is carrying out the emergency communication service according to the random access request;
the processing module is further configured to allocate a temporary ID to the terminal, allocate resources to the terminal according to the temporary ID, and record that the terminal is an emergency communication terminal;
a sending module, configured to send an access response to the terminal, where the access response carries the temporary ID;
the receiving module is further configured to receive a capability negotiation request sent by the terminal;
the sending module is further configured to send a capability negotiation response signaling to the terminal, where the capability negotiation response signaling includes a direct network access identifier, and the direct network access identifier is used to indicate that the terminal directly accesses the network.
7. The base station of claim 6,
the base station reserves a part of reserved access resources in system resources, and the reserved access resources are used for processing emergency communication requests.
8. The base station of claim 6,
the processing module is further configured to set the emergency communication terminal to a highest priority.
9. The base station of claim 6, further comprising:
and the scheduling module is used for scheduling and allocating resources according to the priority of the terminal.
10. A terminal for emergency communication in a wireless communication system, comprising:
a sending module, configured to send a random access request to a base station, where the random access request carries an "emergency communication" indicator bit;
a receiving module, configured to receive an access response sent by a base station;
the sending module is further configured to send a capability negotiation request to the base station;
the receiving module is further configured to receive a capability negotiation response signaling sent by the base station, and confirm that network access is completed.
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| CN201911309286.0A CN112995970B (en) | 2019-12-18 | 2019-12-18 | Method and device for emergency communication in wireless communication system |
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| CN201911309286.0A CN112995970B (en) | 2019-12-18 | 2019-12-18 | Method and device for emergency communication in wireless communication system |
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