CN112995970B - 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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- CN112995970B CN112995970B CN201911309286.0A CN201911309286A CN112995970B CN 112995970 B CN112995970 B CN 112995970B CN 201911309286 A CN201911309286 A CN 201911309286A CN 112995970 B CN112995970 B CN 112995970B
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- 238000004891 communication Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title abstract description 29
- 230000004044 response Effects 0.000 claims description 38
- 230000011664 signaling Effects 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 abstract description 9
- 238000013468 resource allocation Methods 0.000 description 6
- 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
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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]
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- 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
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- 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, wherein a terminal sends a random access request carrying an 'emergency communication' indicating bit to a base station; the base station allocates a temporary ID for the 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 terminal does not need to carry out additional authentication and authentication flow, and the emergency communication terminal can directly and quickly access the network.
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 current wireless communication system realized based on the wireless access technology network, when various communication services are provided, most users access to the network based on a certain access authentication flow; meanwhile, the method is performed based on a certain resource allocation strategy in order to ensure that the multi-user shares the wireless communication system resources. Such a system would face the following problems in facing emergency communication needs in certain emergency situations: when the service load is large, the emergency communication request can not be accessed, the complex signaling process of the network access authentication flow has a certain delay, so that the emergency communication service can not be initiated in time, and the problems that the whole service load of multiple users is large, the emergency communication service is not scheduled in time and the like exist after the network access. Existing communication systems are unable to meet system specific communication requirements in certain 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 carrying out emergency communication in a wireless communication system.
Disclosure of Invention
In view of the above, the present invention provides a method and apparatus for emergency communication in a wireless communication system, which can ensure that an emergency communication service can be initiated quickly and timely, and can realize quick network access of an emergency communication terminal with 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:
the base station reserves a part of reserved access resources in system resources, wherein the reserved access resources are used for processing emergency communication requests;
The terminal sends a random access request to the 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 in emergency communication service; a temporary ID is allocated for the terminal, and the terminal is recorded as 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;
The emergency communication terminal and the base station carry out capability negotiation, and the terminal directly accesses the network.
The capability negotiation process includes:
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, and the direct network access identifier 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 is accessed to the network, the base station sets the emergency communication terminal as the highest priority, and the system resource is scheduled and allocated for the emergency communication terminal by the highest priority.
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.
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 the terminal;
The processing module is used for determining that the terminal is in progress of an emergency communication service according to the random access request;
The processing module is further used for allocating a temporary ID for the terminal, allocating resources for the terminal according to the temporary ID, and recording 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 used for receiving 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 instruct the terminal to directly access 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 communication to a highest priority.
And the scheduling module is used for carrying out resource scheduling allocation 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" indication bit;
The receiving module is used for receiving the access response sent by the base station;
the sending module is further used for sending 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 carry out complex signaling flows such as identity authentication and the like, can rapidly complete network access by using a simpler signaling flow, and ensures rapid establishment of emergency communication service.
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.
To the accomplishment of the foregoing and related ends, the one or more embodiments comprise 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, the disclosed embodiments are intended to include all such aspects and their equivalents.
Drawings
Fig. 1 is a flow chart of a method for emergency communication in a wireless communication system provided by the present invention;
fig. 2 is a signal flow diagram for emergency communication in a wireless communication system according to the present invention;
Fig. 3 is a flowchart of a method for negotiating capabilities of an emergency communication terminal and a base station provided by the present invention;
fig. 4 is a schematic diagram of 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 involve structural, logical, electrical, process, and other changes. The embodiments represent only 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. These 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 1
The embodiment of the invention provides a method for emergency communication in a wireless communication system, which can be applied to a two-way broadcast communication system realized based on a wireless access technology network, the method is mainly applied to the interaction process of a base station and a terminal, and the specific realization process of the invention in the wireless communication system is described below by taking the base station as an execution subject, as shown in fig. 1, and the method comprises the following steps:
Reserving 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 prior art, when various communication services are provided, the emergency communication request cannot be accessed due to large service load when the emergency communication request is faced to some emergency situations.
Fig. 2 is 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' indicating bit;
and the terminal for carrying out emergency communication sends a random access request through the reserved access resource, wherein the random access request carries a cell access type field as 'emergency communication'.
S102, the base station receives the random access request and determines that the terminal is in emergency communication service; a temporary ID is allocated for the terminal, and the terminal is recorded as 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 type field is 'emergency communication', and allocates a temporary ID of a subsequent service to the terminal; sending an access response carrying the temporary ID to the terminal; and the subsequent service allocates resources for the terminal through the temporary ID.
S104, carrying out capability negotiation between the emergency communication terminal and the base station, and indicating the emergency communication terminal to directly access the network.
The terminal does not need to carry out an additional authentication flow in the capability negotiation process 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, the terminal needs to access to the network through a series of signaling flows in the identity authentication process, and the subsequent identity authentication flow is not needed in the 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, and the direct network access identifier is used for indicating the terminal to directly access the network;
Optionally, the direct network access identifier may be the temporary ID, which indicates that the terminal device does not need to perform a subsequent authentication procedure, 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, which is used to indicate that the terminal device does not need to perform a subsequent identity authentication procedure, and directly access the network.
S104c, the terminal receives the capability negotiation response signaling, and network access is completed;
The terminal receives the capability negotiation response signaling, the direct network access identifier carried by the capability negotiation response signaling does not initiate an authentication related signaling flow any more, and the terminal confirms that the network access flow is successful and performs data transmission.
S105, after the terminal is accessed to the network, the base station sets the emergency communication terminal as the highest priority, and the system resource is scheduled and allocated for the emergency communication terminal by 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 prior two-way broadcast communication system, when various communication services are provided, the emergency communication request can not be accessed due to large service load when facing the emergency communication requirements under certain emergency conditions, and the base station reserves part of access resources in system resources so as 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 carrying out emergency communication sends a random access request through the reserved access resource, wherein the random access request carries an 'emergency communication' indicating bit;
a processing module 12, 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 by the processing module to the terminal;
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 instruct the terminal to directly access the network;
Optionally, the direct network access identifier may be the temporary ID, which indicates that the terminal device does not need to perform a subsequent authentication procedure, 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, which is used to indicate that the terminal device does not need to perform a subsequent identity authentication procedure, and directly access the network.
The processing module 12 is further configured to set the emergency communication terminal to a highest priority;
a scheduling module 14, configured to allocate resources to the terminal according to the priority of the terminal.
After a terminal is accessed to a network, a base station sets the communication of the emergency communication terminal as the highest priority, and provides scheduling allocation of system resources for the terminal with the highest priority;
Furthermore, when the base station faces 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" indication 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 a base station transmit access response; 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 the network access is completed according to the capability negotiation response signaling.
The receiving module 22 receives the 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 related signaling flow any more, 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, which reserve certain resources through the system to ensure the access of an emergency communication terminal service; the network access can be rapidly completed by a simpler signaling flow, and the rapid 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 appreciate that the various illustrative method steps and apparatus elements described herein in connection with the disclosed embodiments may 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 above disclosed embodiments 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 an alternative embodiment, the processor and the storage medium may reside as discrete components in a subscriber station.
The embodiments disclosed may enable any person 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 embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, but any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (1)
1. An apparatus for emergency communication in a wireless broadcast communication system, comprising:
a receiving module, configured to receive a random access request sent by a terminal performing emergency communication, and receive a capability negotiation request sent by the terminal;
The processing module is used for determining that the terminal is in emergency communication service according to the random access request, allocating a temporary ID for the terminal, allocating resources for the terminal according to the temporary ID, recording that the terminal is an emergency communication terminal, and setting the emergency communication terminal as the highest priority;
The terminal equipment comprises a sending module, a processing module and a capability negotiation response signaling, wherein the sending module is used for sending an access response to the terminal, the access response carries a temporary ID allocated by the processing module for the terminal, the capability negotiation response signaling comprises a direct network access identifier, the direct network access identifier is used for indicating the terminal to directly access the network, the direct network access identifier is the temporary ID and indicates that the terminal equipment does not need to carry out a subsequent identity authentication flow, the emergency communication terminal directly accesses the network, or the direct network access identifier in the response signaling is a field of 'does not need to carry out identity authentication', and the direct network access identifier is used for indicating that the terminal equipment does not need to carry out a subsequent identity authentication flow;
And the scheduling module is used for distributing resources to the terminal according to the priority of the terminal.
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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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| CN112995970B true CN112995970B (en) | 2024-06-25 |
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| CN114786163A (en) * | 2022-04-27 | 2022-07-22 | 中国电信股份有限公司 | Emergency communication method and system and unmanned aerial vehicle base station control device |
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| CN103430579A (en) * | 2012-02-21 | 2013-12-04 | 华为技术有限公司 | Emergency call access method and system, base station, and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100488269C (en) * | 2006-06-29 | 2009-05-13 | 华为技术有限公司 | Call access method in digital cluster system |
| WO2008093218A2 (en) * | 2007-01-31 | 2008-08-07 | Nokia Corporation | Emergency and priority calling support in wimax |
| WO2017113077A1 (en) * | 2015-12-28 | 2017-07-06 | 华为技术有限公司 | Emergency service uplink transmission method, base station, user equipment and system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101841791A (en) * | 2009-03-18 | 2010-09-22 | 华为技术有限公司 | Method, evolution base station and system for emergency call service |
| CN103430579A (en) * | 2012-02-21 | 2013-12-04 | 华为技术有限公司 | Emergency call access method and system, base station, and terminal |
| CN106658452A (en) * | 2015-10-30 | 2017-05-10 | 北京信威通信技术股份有限公司 | Emergency call access method, device and system |
| CN108076449A (en) * | 2017-12-08 | 2018-05-25 | 海能达通信股份有限公司 | Emmergency call method, trunked communication system, base station and control device |
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