CN110996310A - Method and system for commanding and scheduling emergency - Google Patents
Method and system for commanding and scheduling emergency Download PDFInfo
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- CN110996310A CN110996310A CN201911246066.8A CN201911246066A CN110996310A CN 110996310 A CN110996310 A CN 110996310A CN 201911246066 A CN201911246066 A CN 201911246066A CN 110996310 A CN110996310 A CN 110996310A
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- base station
- mobile terminal
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- power preference
- handover request
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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
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/27—Transitions between radio resource control [RRC] states
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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
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
Abstract
The invention discloses a command scheduling method of an emergency, which comprises the following steps: collecting emergency information by a mobile terminal; sending, by the mobile terminal, a measurement report to the first base station based on the reference signals sent by the first base station and the second base station; determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report; transmitting, by the first base station, a power preference indication request message to the mobile terminal; transmitting, by the mobile terminal to the first base station, a power preference indication at a first time t1 in response to receiving the power preference indication request message; and if the first base station determines to hand over the communication with the mobile terminal to the second base station, sending a handover request to the second base station by the first base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before sending the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication.
Description
Technical Field
The present invention relates to the technical field of emergency monitoring, and in particular, to a method for commanding and scheduling an emergency.
Background
Emergency management requirements for emergency events are very high, and the situation needs to be quickly known and the cause of the event needs to be found out; the quick response is realized, and the scene is reached as soon as possible; taking a fruit breaking measure and implementing correct command; emergency rescue is carried out to prevent situation development; after good arrangement, the loss is reduced as much as possible.
The prior art CN106469203B discloses a method and a device for screening emergency data, wherein the method mainly includes: constructing a denoising general table, a combined word table and a reverse word table; and screening the collected emergency relevant data according to one or more of the denoising general table, the combined word list and the reverse word list. The invention provides a basis for the construction of the emergency keyword word list through natural language analysis. In order to ensure the accuracy of the data, the invention adopts a multi-word table to realize the screening of the emergency data.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a command scheduling method for an emergency, which can overcome the defects of the prior art.
In order to achieve the above object, the present invention provides a method for commanding and scheduling an emergency, which comprises the following steps: collecting emergency information by a mobile terminal, wherein the mobile terminal is communicating with a first base station, and the mobile terminal can receive reference signals sent by the first base station and a second base station; sending a measurement report to the first base station by the mobile terminal based on reference signals sent by the first base station and the second base station, wherein the measurement report comprises the quality of a first communication link between the mobile terminal and the first base station and the quality of a second communication link between the mobile terminal and the second base station; determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report; transmitting, by the first base station, a power preference indication request message to the mobile terminal; transmitting, by the mobile terminal to the first base station, a power preference indication at a first time t1 in response to receiving the power preference indication request message; and transmitting, by the first base station, a handover request to the second base station if the first base station determines to hand over communication with the mobile terminal to the second base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before transmitting the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication before transmitting the handover request.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the second base station judges that the second base station can receive the handover of the first base station, the second base station sends a handover request confirmation to the first base station; transmitting, by the first base station, a handover command to the mobile terminal in response to receiving the handover request acknowledgement; establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command; after successfully establishing the RRC connection with the second base station, transmitting, by the mobile terminal, emergency information to the second base station; determining, by the mobile terminal, a second time t2 for sending the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that the power preference indication is not included in the handover request; the power preference indication is retransmitted by the mobile terminal to the second base station in response to determining that the power preference indication is not included in the handover request.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the second time is later than the first time, the mobile terminal judges that the handover request comprises a power preference indication; in response to determining that the power preference indication is included in the handover request, the mobile terminal does not retransmit the power preference indication to the second base station.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: starting a timer by the mobile terminal after sending the power preference indication to the first base station, wherein the timeout time of the timer is specified to be greater than the time of the anticipated handover preparation procedure; if the mobile terminal receives the handover command before the timer expires, determining, by the mobile terminal, that the handover request does not include a power preference indication; retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request; if the mobile terminal receives the handover command after the timer is overtime, the mobile terminal judges that the handover request comprises a power preference indication; in response to determining that the power preference indication is included in the handover request, the mobile terminal does not retransmit the power preference indication to the second base station.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the power preference indication is included in the handover request, including, by the first base station, a notification in the handover command that the power preference indication has been forwarded to the second base station; determining, by the mobile terminal, based on the handover command, whether a notification that the power preference indication has been forwarded to the second base station is included in the handover command; resending, by the mobile terminal, the power preference indication to the second base station if the handover command does not include a notification that the power preference indication has been forwarded to the second base station; if the handover command includes a notification that the power preference indication has been forwarded to the second base station, the mobile terminal does not resend the power preference indication to the second base station.
The invention also provides a command and dispatch system for emergency, which comprises: the method comprises the steps of collecting emergency information by a mobile terminal, wherein the mobile terminal is communicating with a first base station, and the mobile terminal can receive reference signals transmitted by the first base station and a second base station; means for transmitting, by the mobile terminal, a measurement report to the first base station based on reference signals transmitted by the first base station and the second base station, wherein the measurement report includes a first communication link quality between the mobile terminal and the first base station and a second communication link quality between the mobile terminal and the second base station; means for determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report; means for transmitting, by the first base station, a power preference indication request message to the mobile terminal; means for transmitting, by the mobile terminal, a power preference indication to the first base station at a first time t1 in response to receiving the power preference indication request message; and means for transmitting, by the first base station, a handover request to the second base station if the first base station determines to hand over communication with the mobile terminal to the second base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before transmitting the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication before transmitting the handover request.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for transmitting, by the second base station, a handover request acknowledgement to the first base station if the second base station determines that the second base station is capable of receiving the handover of the first base station; means for transmitting a handover command to the mobile terminal by the first base station in response to receiving the handover request acknowledgement; means for establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command; means for transmitting, by the mobile terminal, the emergency information to the second base station after the RRC connection with the second base station is successfully established; means for determining, by the mobile terminal, a second time t2 for sending the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that the power preference indication is not included in the handover request; means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for determining, by the mobile terminal, that the handover request includes a power preference indication if the second time is later than the first time; means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for starting a timer by the mobile terminal after transmitting the power preference indication to the first base station, wherein a timeout time of the timer is specified to be greater than a time of an expected handover preparation procedure; means for determining, by the mobile terminal, that the power preference indication is not included in the handover request if the handover command is received by the mobile terminal before the timer times out; means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request; means for determining, by the mobile terminal, that the handover request includes a power preference indication if the mobile terminal receives the handover command after the timer expires; means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for including, by the first base station, a notification in the handover command that the power preference indication has been forwarded to the second base station if the power preference indication is included in the handover request; means for determining, by the mobile terminal, based on the handover command, whether a notification that the power preference indication has been forwarded to the second base station is included in the handover command; means for retransmitting, by the mobile terminal, the power preference indication to the second base station if the handover command does not include a notification that the power preference indication has been forwarded to the second base station; means for, if the handover command includes a notification that the power preference indication has been forwarded to the second base station, the mobile terminal no longer resends the power preference indication to the second base station.
Compared with the prior art, the unmanned aerial vehicle has the following advantages that the unmanned aerial vehicle has great advantages in emergency rescue, disaster resistance, disaster prevention and other emergencies. Generally, natural disasters all occur on the ground, so various natural disasters have almost no influence on the operation of the unmanned aerial vehicle. Along with the continuous development of the internet of things technology, various communication technologies related to the unmanned aerial vehicle become mature day by day, and the unmanned aerial vehicle remote control based on the internet of things can be realized at present. However, for the application of disaster relief scenes, because the traditional communication system is designed aiming at the normal state, once a natural disaster situation occurs, network congestion is inevitably caused by incoming and outgoing calls of a large number of calls, and how to ensure the communication and long-time use of the unmanned aerial vehicle under the situation becomes very important.
Drawings
Fig. 1 is a flowchart of a method for commanding and scheduling an emergency according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a flowchart of a method for commanding and scheduling an emergency according to an embodiment of the present invention. As shown in the figure, the method for commanding and scheduling an emergency according to the present invention includes the following steps:
step 101: collecting, by a mobile terminal (e.g., a cell phone, a drone, a quadcopter, etc.), emergency information, wherein the mobile terminal is communicating with a first base station, and the mobile terminal is capable of receiving reference signals transmitted by the first base station and a second base station;
step 102: sending a measurement report to the first base station by the mobile terminal based on reference signals sent by the first base station and the second base station, wherein the measurement report comprises the quality of a first communication link between the mobile terminal and the first base station and the quality of a second communication link between the mobile terminal and the second base station;
step 103: determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report;
step 104: transmitting, by the first base station, a power preference indication request message to the mobile terminal;
step 105: transmitting, by the mobile terminal to the first base station, a power preference indication at a first time t1 in response to receiving the power preference indication request message; and
step 106: if the first base station determines to hand over communication with the mobile terminal to the second base station, a handover request is sent by the first base station to the second base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before sending the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication before sending the handover request.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the second base station judges that the second base station can receive the handover of the first base station, the second base station sends a handover request confirmation to the first base station; transmitting, by the first base station, a handover command to the mobile terminal in response to receiving the handover request acknowledgement; establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command; after successfully establishing the RRC connection with the second base station, transmitting, by the mobile terminal, emergency information to the second base station; determining, by the mobile terminal, a second time t2 for sending the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that a Power Preference Indication (PPI) is not included in the handover request, for the definition and effect of the indication, see the multiple standards of 3 GPP); the power preference indication is retransmitted by the mobile terminal to the second base station in response to determining that the power preference indication is not included in the handover request.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the second time is later than the first time, the mobile terminal judges that the handover request comprises a power preference indication; in response to determining that the power preference indication is included in the handover request, the mobile terminal does not retransmit the power preference indication to the second base station.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: starting a timer by the mobile terminal after sending the power preference indication to the first base station, wherein the timeout time of the timer is specified to be greater than the time of the anticipated handover preparation procedure; if the mobile terminal receives the handover command before the timer expires, determining, by the mobile terminal, that the handover request does not include a power preference indication; retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request; if the mobile terminal receives the handover command after the timer is overtime, the mobile terminal judges that the handover request comprises a power preference indication; in response to determining that the power preference indication is included in the handover request, the mobile terminal does not retransmit the power preference indication to the second base station.
In a preferred embodiment, the method for commanding and scheduling an emergency event includes the following steps: if the power preference indication is included in the handover request, including, by the first base station, a notification in the handover command that the power preference indication has been forwarded to the second base station; determining, by the mobile terminal, based on the handover command, whether a notification that the power preference indication has been forwarded to the second base station is included in the handover command; resending, by the mobile terminal, the power preference indication to the second base station if the handover command does not include a notification that the power preference indication has been forwarded to the second base station; if the handover command includes a notification that the power preference indication has been forwarded to the second base station, the mobile terminal does not resend the power preference indication to the second base station.
The invention also provides a command and dispatch system for emergency, which comprises: the method comprises the steps of collecting emergency information by a mobile terminal, wherein the mobile terminal is communicating with a first base station, and the mobile terminal can receive reference signals transmitted by the first base station and a second base station; means for transmitting, by the mobile terminal, a measurement report to the first base station based on reference signals transmitted by the first base station and the second base station, wherein the measurement report includes a first communication link quality between the mobile terminal and the first base station and a second communication link quality between the mobile terminal and the second base station; means for determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report; means for transmitting, by the first base station, a power preference indication request message to the mobile terminal; means for transmitting, by the mobile terminal, a power preference indication to the first base station at a first time t1 in response to receiving the power preference indication request message; means for transmitting, by the first base station, a handover request to the second base station if the first base station determines to hand over communication with the mobile terminal to the second base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before transmitting the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication before transmitting the handover request.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for transmitting, by the second base station, a handover request acknowledgement to the first base station if the second base station determines that the second base station is capable of receiving the handover of the first base station; means for transmitting a handover command to the mobile terminal by the first base station in response to receiving the handover request acknowledgement; means for establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command; means for transmitting, by the mobile terminal, the emergency information to the second base station after the RRC connection with the second base station is successfully established; means for determining, by the mobile terminal, a second time t2 for sending the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that the power preference indication is not included in the handover request; means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for determining, by the mobile terminal, that the handover request includes a power preference indication if the second time is later than the first time; means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for starting a timer by the mobile terminal after transmitting the power preference indication to the first base station, wherein a timeout time of the timer is specified to be greater than a time of an expected handover preparation procedure; means for determining, by the mobile terminal, that the power preference indication is not included in the handover request if the handover command is received by the mobile terminal before the timer times out; means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request; means for determining, by the mobile terminal, that the handover request includes a power preference indication if the mobile terminal receives the handover command after the timer expires; means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
In a preferred embodiment, the system for commanding and scheduling an emergency event comprises: means for including, by the first base station, a notification in the handover command that the power preference indication has been forwarded to the second base station if the power preference indication is included in the handover request; means for determining, by the mobile terminal, based on the handover command, whether a notification that the power preference indication has been forwarded to the second base station is included in the handover command; means for retransmitting, by the mobile terminal, the power preference indication to the second base station if the handover command does not include a notification that the power preference indication has been forwarded to the second base station; means for, if the handover command includes a notification that the power preference indication has been forwarded to the second base station, the mobile terminal no longer resends the power preference indication to the second base station.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A method for commanding and scheduling an emergency, which is characterized in that: the method for commanding and scheduling the emergency comprises the following steps:
collecting emergency information by a mobile terminal, wherein the mobile terminal is communicating with a first base station, and the mobile terminal can receive reference signals sent by the first base station and a second base station;
sending, by the mobile terminal, a measurement report to the first base station based on reference signals sent by the first base station and a second base station, wherein the measurement report includes a first communication link quality between the mobile terminal and the first base station and a second communication link quality between the mobile terminal and the second base station;
determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report;
transmitting, by the first base station, a power preference indication request message to the mobile terminal;
sending, by the mobile terminal to the first base station, a power preference indication at a first time t1 in response to receiving the power preference indication request message; and
transmitting, by the first base station, a handover request to the second base station if the first base station determines to hand over communication with the mobile terminal to the second base station, wherein the power preference indication is included in the handover request if the power preference indication has been received by the first base station before the handover request is transmitted, and the power preference indication is not included in the handover request if the power preference indication has not been received by the first base station before the handover request is transmitted.
2. The method of claim 1, wherein the method further comprises: the method for commanding and scheduling the emergency comprises the following steps:
if the second base station judges that the second base station can receive the handover of the first base station, the second base station sends a handover request confirmation to the first base station;
transmitting, by the first base station, a handover command to the mobile terminal in response to receiving the handover request acknowledgement;
establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command;
transmitting, by the mobile terminal, the emergency information to the second base station after the RRC connection with the second base station is successfully established;
determining, by the mobile terminal, a second time t2 at which to send the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that the power preference indication is not included in the handover request;
retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request.
3. The method of claim 2, wherein the method further comprises: the method for commanding and scheduling the emergency comprises the following steps:
if the second time is later than the first time, the mobile terminal judges that the handover request comprises the power preference indication;
in response to determining that the power preference indication is included in the handover request, the mobile terminal does not resend the power preference indication to the second base station.
4. The method of claim 3, wherein the method further comprises: the method for commanding and scheduling the emergency comprises the following steps:
starting a timer by the mobile terminal after transmitting a power preference indication to the first base station, wherein a timeout time of the timer is specified to be greater than a time of an expected handover preparation procedure;
determining, by the mobile terminal, that the handover request does not include the power preference indication if the mobile terminal receives the handover command before the timer times out;
retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request;
if the mobile terminal receives the handover command after the timer is overtime, the mobile terminal judges that the handover request comprises the power preference indication;
in response to determining that the power preference indication is included in the handover request, the mobile terminal does not resend the power preference indication to the second base station.
5. The method of claim 4, wherein the method comprises: the method for commanding and scheduling the emergency comprises the following steps:
if the power preference indication is included in the handover request, including, by the first base station, a notification in the handover command that a power preference indication has been forwarded to the second base station;
determining, by the mobile terminal, based on the handover command, whether a notification that a power preference indication has been forwarded to the second base station is included in the handover command;
retransmitting, by the mobile terminal, the power preference indication to the second base station if no notification to the power preference indication has been forwarded to the second base station is included in the handover command;
if the handover command includes a notification that a power preference indication has been forwarded to the second base station, the mobile terminal does not resend the power preference indication to the second base station.
6. A system for commanding and scheduling an emergency, comprising: the command scheduling system of the emergency comprises:
means for collecting emergency information by a mobile terminal, wherein the mobile terminal is communicating with the first base station, and the mobile terminal is capable of receiving reference signals transmitted by the first base station and a second base station;
means for transmitting, by the mobile terminal, a measurement report to the first base station based on reference signals transmitted by the first and second base stations, wherein the measurement report includes a first communication link quality between the mobile terminal and the first base station and a second communication link quality between the mobile terminal and the second base station;
means for determining, by the first base station, whether to hand over communication with the mobile terminal to the second base station based on the measurement report;
means for transmitting, by the first base station, a power preference indication request message to the mobile terminal;
means for transmitting, by the mobile terminal, a power preference indication to the first base station at a first time t1 in response to receiving the power preference indication request message; and
means for transmitting, by the first base station, a handover request to the second base station if the first base station determines to hand over communication with the mobile terminal to the second base station, wherein the power preference indication is included in the handover request if the first base station has received the power preference indication before transmitting the handover request, and the power preference indication is not included in the handover request if the first base station has not received the power preference indication before transmitting the handover request.
7. The incident command scheduling system of claim 6, wherein: the command scheduling system of the emergency comprises:
means for transmitting, by the second base station, a handover request acknowledgement to the first base station if the second base station determines that the second base station is capable of receiving a handover of the first base station;
means for transmitting, by the first base station, a handover command to the mobile terminal in response to receiving the handover request acknowledgement;
means for establishing, by the mobile terminal, an RRC connection with the second base station in response to receiving the handover command;
means for transmitting, by the mobile terminal, the emergency information to the second base station after successfully establishing the RRC connection with the second base station;
means for determining, by the mobile terminal, a second time t2 at which to send the measurement report to the first base station, and if the second time is earlier than the first time or the second time is the same as the first time, determining, by the mobile terminal, that the power preference indication is not included in the handover request;
means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request.
8. The incident command scheduling system of claim 7, wherein: the command scheduling system of the emergency comprises:
means for determining, by the mobile terminal, that the handover request includes the power preference indication if the second time is later than the first time;
means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
9. The incident command scheduling system of claim 8, wherein: the command scheduling system of the emergency comprises:
means for starting a timer by the mobile terminal after transmitting a power preference indication to the first base station, wherein a timeout time of the timer is specified to be greater than a time of an expected handover preparation procedure;
means for determining, by the mobile terminal, that the handover request does not include the power preference indication if the handover command is received by the mobile terminal before the timer times out;
means for retransmitting, by the mobile terminal, the power preference indication to the second base station in response to determining that the power preference indication is not included in the handover request;
means for determining, by the mobile terminal, that the handover request includes the power preference indication if the mobile terminal receives the handover command after the timer expires;
means for, in response to determining that the power preference indication is included in the handover request, the mobile terminal no longer resends the power preference indication to the second base station.
10. The incident command scheduling system of claim 9, wherein: the command scheduling system of the emergency comprises:
means for including, by the first base station, a notification in the handover command that a power preference indication has been forwarded to the second base station if the power preference indication is included in the handover request;
means for determining, by the mobile terminal, based on the handover command, whether a notification that a power preference indication has been forwarded to the second base station is included in the handover command;
means for retransmitting, by the mobile terminal, a power preference indication to the second base station if no notification that the power preference indication has been forwarded to the second base station is included in the handover command;
means for, if the handover command includes a notification that a power preference indication has been forwarded to the second base station, the mobile terminal no longer resends the power preference indication to the second base station.
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