CN109547993A - A kind of method and apparatus that wireless terminal is initially accessed - Google Patents
A kind of method and apparatus that wireless terminal is initially accessed Download PDFInfo
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- CN109547993A CN109547993A CN201710612843.0A CN201710612843A CN109547993A CN 109547993 A CN109547993 A CN 109547993A CN 201710612843 A CN201710612843 A CN 201710612843A CN 109547993 A CN109547993 A CN 109547993A
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- service request
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The application proposes a kind of method and apparatus that wireless terminal is initially accessed, comprising: according to the urgency traffic attribute that user requests, it is emergency service request that user's request is marked in radio resource control RRC layer；It is emergency service request that user's request is marked in the message for being sent to middle layer；Physical layer is notified to initiate urgent initial access request.Emergency service request and regular service request are distinguished in bottom, the too low caused urgent initial communication of PRACH initial power is avoided to establish by delay repeatedly, the efficiency that communication is established is promoted, the time delay that communication is established is reduced, promotes the once success rate of initial access.For the terminal of emergency communication demand, more excellent opportunity and higher initial power can be obtained in the random access procedure.It avoids and repeatedly initiates reactance capacity loss caused by PRACH power is climbed, the battery durable ability of terminal can be promoted, good economy performance, feasibility is high, extensive market.
Description
Technical field
The present invention relates to internet of things field, and in particular to a kind of method and apparatus that wireless terminal is initially accessed.
Background technique
From the point of view of the demand of 5G, main there are three direction, super large handling capacity direction eMBB (Enhance Mobile
Broadband enhances mobile broadband), it is mainly directed towards in 5G cell phone type user terminal；Low time delay high reliability direction uRLLC
(Ultra-reliable and low latency communications, the communication of low time delay high reliability), is mainly directed towards 5G
Urgency traffic or public safety, car networking automatic Pilot, industry 4.0 wait directions.
In ultralow time delay, highly reliable this direction uRLLC, the means of communication of especially reliable and special low time delay is needed,
It requires consideration for how to promote the efficiency that communication is established at present, reduces the time delay that communication is established.
In the initial access of current wireless telecommunications, the common technique of use is that radio access technology is completed to be initially accessed.
Initial random access is gradually climbed using power at present, randomly chooses leading, the mode of contention access.
Terminal most starts to request with the transmitting of lesser transmission power to base station, when base station is without response in random access procedure
When, terminal can increase a little power again, again attempt to access, this can undoubtedly introduce the time delay of initial access.This is right
Requirement is unable to satisfy for the product for requiring high reliability and ultralow access delay.
After initial leading requests to obtain response, due to being contention access, it is also necessary to the process of network-assisted contention resolved,
But because different UE possibility when randomly choose preamble index will accidentally select identical leading, such network just must
There must be final umpirage, who wins on earth.Since network can not determine that the request of that terminal is more urgent, then can only just use up
Measure it is equiprobable go equalization ruling.Real emergency communication request may have been delayed.
Current technology, flash request can only RRC/NAS (Radio Resource Control, wireless heterogeneous networks/
Network Attached Storage, network attached storage) it could embody in message, but trigger and promptly establish RRC/NAS
Whether it is urgent access request that the initial random access procedure of connection, MAC and physical layer are indistinguishable, even causing tight
Anxious service is with regular service as the probability of bottom preempting resources is with delay.
When terminal and network establish emergency communication, only NAS and rrc layer can arrive RLC (Radio with urgent express train
Link Control, radio link layer control protocol) and its physical layer after, be as conventional communications please seek unification away
Processing mode cannot be distinguished.There is no green channel on bottom namely.
Summary of the invention
The present invention provides a kind of method and apparatus that wireless terminal is initially accessed, and realizes the random access in urgent need
More excellent opportunity and higher initial power in the process.
In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:
A kind of method that wireless terminal is initially accessed, is applied to terminal, comprising:
According to the urgency traffic attribute that user requests, it is tight that user's request is marked in radio resource control RRC layer
Anxious service request；
It is emergency service request that user's request is marked in the message for being sent to middle layer；
Physical layer is notified to initiate urgent initial access request.
Preferably, the middle layer includes: wireless spread-spectrum technology rlc layer and MAC layers of control of media intervention.
Preferably, the user request is marked to include: for emergency service request in the message for being sent to middle layer
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell
It is emergency service request that user's request is marked in PDCP PDU message；And the PDCP PDU message is sent to RLC
Layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, in Radio Link control
It is emergency service request that user's request is marked in protocol Data Unit RLC PDU message processed, and the RLC PDU is disappeared
Breath is sent to MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
Preferably, after the urgent initial access request of notice physical layer initiation further include: use preset initial transmissions function
Rate carries out leading transmission.
Preferably, obtaining preset Initial Trans includes:
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
In order to solve the above technical problems, it is set to terminal the present invention also provides the device that a kind of wireless terminal is initially accessed,
Include:
Mark module is set as the urgency traffic attribute requested according to user, marks in radio resource control RRC layer
User's request is emergency service request；
Processing module is set as marking user's request in the message for being sent to middle layer being emergency service request；
AM access module is set as notice physical layer and initiates urgent initial access request.
Preferably, the middle layer includes: wireless spread-spectrum technology rlc layer and MAC layers of control of media intervention.
Preferably, the processing module marks user's request to ask for emergency services in the message for being sent to middle layer
It asks and includes:
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell
It is emergency service request that user's request is marked in PDCP PDU message；And the PDCP PDU message is sent to RLC
Layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, in Radio Link control
It is emergency service request that user's request is marked in protocol Data Unit RLC PDU message processed, and the RLC PDU is disappeared
Breath is sent to MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
Preferably, the device of the initial access further include: sending module is set as using preset initial transmissions function
Rate carries out leading transmission.
Preferably, the preset Initial Trans of the sending module acquisition include:
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
Compared to the prior art the present invention, has the following beneficial effects:
Technical solution of the present invention distinguishes emergency service request and regular service request in bottom, at the beginning of avoiding PRACH
Urgent initial communication caused by beginning power is too low is established by delay repeatedly, and the efficiency that communication is established is promoted, and is reduced communication and is established
Time delay, promote the once success rate of initial access.It, can be in random access mistake for the terminal of emergency communication demand
More excellent opportunity and higher initial power are obtained in journey.It avoids and repeatedly initiates reactance capacity damage caused by PRACH power is climbed
Consumption can promote the battery durable ability of terminal, and good economy performance, feasibility is high, extensive market.
Detailed description of the invention
Fig. 1 is the flow chart for the method that the wireless terminal of the embodiment of the present invention is initially accessed；
Fig. 2 is the structural schematic diagram for the device that the wireless terminal of the embodiment of the present invention is initially accessed；
Fig. 3 is the flow chart of the car networking platform terminal initial access process of embodiment 1；
Fig. 4 is PDCP PDU message packaging structure schematic diagram；Wherein, Fig. 4 (a) is the PDCP PDU message in 3GPP specification
Packaging structure schematic diagram；Fig. 4 (b) is the PDCP PDU message packaging structure schematic diagram of the embodiment of the present invention 1；
Fig. 5 is RLC PDU message packaging structure schematic diagram；Wherein, Fig. 5 (a) is the RLC PDU message in 3GPP specification
Packaging structure schematic diagram；Fig. 5 (b) is the RLC PDU message packaging structure schematic diagram of the embodiment of the present invention 1.
Specific embodiment
To keep goal of the invention of the invention, technical scheme and beneficial effects more clear, with reference to the accompanying drawing to this
The embodiment of invention is illustrated, it should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
As shown in Figure 1, the embodiment of the present invention provides a kind of method that wireless terminal is initially accessed, it is applied to terminal, comprising:
S101, the urgency traffic attribute requested according to user, mark the user to request in radio resource control RRC layer
For emergency service request；
S102, the user is marked to request as emergency service request in the message for being sent to middle layer；
S103, notice physical layer initiate urgent initial access request.
The middle layer includes: wireless spread-spectrum technology rlc layer and media intervention control MAC layer.
It is initially accessed and is respectively as follows: using random access procedure competition-based using four step process methods in 3 gpp
Msg1: random access preamble transmission is carried out using Physical Random Access Channel PRACH；
Msg2: random access response is carried out using Physical Downlink Shared Channel PDSCH；
Msg3: physically including the scheduled transmission of C-RNTI MAC CE or CCCH SDU in the shared channel PUSCH of row；
Msg4: Physical Downlink Shared Channel PDSCH Conflict solving is utilized.
It is requested in terminal side for distinguishing emergency service request and regular service in rrc layer, in PDCP layers, rlc layer, MAC
Layer, physical layer do not distinguish emergency service request and regular service request, in network side, since bottom does not distinguish emergency services
Request and regular service request, emergency service request and regular service request, therefore, emergency services could be embodied by having arrived rrc layer
Request in bottom preempting resources probability and delay with regular service request, wireless terminal provided in an embodiment of the present invention
The method of initial access distinguishes emergency service request and regular service request in bottom, promotes the efficiency that communication is established, and reduces logical
The time delay established is interrogated, for the terminal of emergency communication demand, more excellent opportunity and more can be obtained in the random access procedure
High initial power.
Wherein, marking user's request in step S102 in the message for being sent to middle layer is emergency service request packet
It includes:
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell
It is emergency service request that user's request is marked in PDCP PDU message；And the PDCP PDU message is sent to RLC
Layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, in Radio Link control
It is emergency service request that user's request is marked in protocol Data Unit RLC PDU message processed, and the RLC PDU is disappeared
Breath is sent to MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
What it is when user's request is that emergency services are, can be labeled as emergency service request in RRC or NAS, send urgent clothes
Business request in packet header labeled as emergency service request when PDCP layers of progress data encoding packing, and sends PDCP to PDCP layer
PDU is to rlc layer；When rlc layer receives PDCP SDU, check whether the packet header PDCP SDU is designated as emergency service request, and
The synchronous packet header that this flag bit is placed into oneself when being packaged as RLC PDU, is sent to MAC layer processing, and MAC layer receives RLC
When SDU, decided whether according to the emergency service request flag bit in the packet header RLC SDU as urgent access request.If it find that RLC
The packet header mark of SDU is emergency services, then physical layer is notified to initiate urgent initial access request, otherwise sends conventional be initially accessed
Request.
After step S103 notifies physical layer to initiate urgent initial access request further include:
S104, leading transmission is carried out using preset Initial Trans.
Preset Initial Trans are obtained in step S104 includes:
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
After physical layer receives the urgent initial access request of MAC layer transmitting, using more higher than conventionally calculation power first
Beginning transmission power carries out leading transmission.
As shown in Fig. 2, the embodiment of the present invention also provides a kind of device that wireless terminal is initially accessed, it is set to terminal, is wrapped
It includes:
Mark module is set as the urgency traffic attribute requested according to user, marks in radio resource control RRC layer
User's request is emergency service request；
Processing module is set as marking user's request in the message for being sent to middle layer being emergency service request；
AM access module is set as notice physical layer and initiates urgent initial access request.
The middle layer includes: wireless spread-spectrum technology rlc layer and media intervention control MAC layer.
The processing module marks the user request to include: for emergency service request in the message for being sent to middle layer
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell
It is emergency service request that user's request is marked in PDCP PDU message；And the PDCP PDU message is sent to RLC
Layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, in Radio Link control
It is emergency service request that user's request is marked in protocol Data Unit RLC PDU message processed, and the RLC PDU is disappeared
Breath is sent to MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
Further include sending module, is set as carrying out leading transmission using preset Initial Trans.
The sending module obtains preset Initial Trans
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
Embodiment 1
In conjunction with Fig. 3, illustrate the initial access process of the emergency communication request based on car networking platform:
Step0: user's request is car networking anticollision warning communication request or E911 emergency request etc. in the present embodiment.
When user triggers an emergency service request, then a specific implementation case of the invention is triggered.
Step1: what it is due to user's triggering is emergency service request, and rrc layer or NAS layers can be marked using certain means
Note comes out, such as rrc layer can be with Emergency come to mark this be an emergency service request.
--ASN1START
RRCConnectionRequest::=SEQUENCE
criticalExtensions CHOICE{
rrcConnectionRequest-r8RRCConnectionRequest-r8-IEs,
criticalExtensionsFuture SEQUENCE{}
}
}
RRCConnectionRequest-r8-IEs::=SEQUENCE
ue-Identity InitialUE-Identity,
establishmentCause emergency,
spare BIT STRING(SIZE(1))
}
At this point, because RRC it is labeled be emergency, needed when being sent to PDCP layers through an emergency services
Interaction function come inform PDCP layers to mark user request be emergency service request.Such as the clothes that rrc layer is sent to PDCP layers
Be engaged in request primitive be following format: in the service request that rrc layer issues PDCP layer, increase by one whether be emergency services finger
Show.
Step2: after receiving user's request primitive of step1, PDCP layers can be specific by some in packaged data
Packet header position instruction is emergency service request.It is the existing PDCP layers of packing knot of 3GPP respectively as shown in Fig. 4 (a) and Fig. 4 (b)
Structure can use one of Bit as extension wherein containing three R (Reserved retains) bit.Such as utilize first
A bit becomes EMB (Emergency Bit) to mark.
After receiving service primitive above, EMB the 1. PDCP numbers of plies being then packaged have been set to just when being packaged at this time
RLC is issued according to packet to be further processed.It is the existing PDCP layers of packaging structure of 3GPP respectively as shown in Fig. 5 (a) and Fig. 5 (b),
In contain three R1 (Reserved) bit, can use one of Bit as extension.Such as using first bit, at
It is marked for EMB (Emergency Bit).(remarks: if can also without Reserve Bit in specific RLC pdu header structure
To extend the definition of other bit, a specific condition of only illustrating herein, all extensions for packet header all should belong to this specially
The scope of benefit)
After receiving data above packet, EMB the 1. rlc layer data being then packaged have been set to just when being packaged at this time
Packet is issued MAC layer and is further processed.
Step3: after MAC layer receives RLC data packet, checking EMB bit, when EMB bit is 1, sends urgent first
Beginning, access request was to physical layer.
Step4: after physical layer receives urgent initial access request, the first of routine can be calculated first, in accordance with existing method
Beginning transmission power.Conventional Calculation Method obtains the power P that send are as follows:
P=preambleInitialReceivedTargetPower+DELTA_PREAMBLE+ (PREAMBLE_
TRANSMISSION_COUNTER–1)*powerRampingStep
Wherein preambleInitialReceivedTargetPower is that eNodeB expects the preamble received
Initial power.DELTA_PREAMBLE is related to preamble format, and value is shown in 36.321 Table 7.6-1.And
After powerRampingStep is each access failure, transmission power that when access next time is promoted.
Due to being emergency communication request, then must increase a power bias then should be
P '=Min (Pmax, P+DeltaP)
Wherein Pmax is the maximum transmission power of terminal, and DeltaP is mentioned for the initial power of urgent initial access request
It appreciates.Then terminal uses this power P ' send random access request.
Although disclosed embodiment is as above, its content is only to facilitate understand technical side of the invention
Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not
Under the premise of being detached from disclosed core technology scheme, any modification and change can be made in form and details in implementation
Change, but protection scope defined by the present invention, the range that the appended claims that must still be subject to limits.
Claims (10)
1. a kind of method that wireless terminal is initially accessed, which is characterized in that be applied to terminal, comprising:
According to the urgency traffic attribute that user requests, mark user's request for urgent clothes in radio resource control RRC layer
Business request；
It is emergency service request that user's request is marked in the message for being sent to middle layer；
Physical layer is notified to initiate urgent initial access request.
2. the method being initially accessed as described in claim 1, it is characterised in that: the middle layer includes: wireless spread-spectrum technology
Rlc layer and media intervention control MAC layer.
3. the method being initially accessed as claimed in claim 2, it is characterised in that: mark institute in the message for being sent to middle layer
User's request, which is stated, as emergency service request includes:
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell PDCP
It is emergency service request that user's request is marked in PDU message；And the PDCP PDU message is sent to rlc layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, assists in wireless spread-spectrum technology
It is emergency service request that user's request is marked in view data cell RLC PDU message, and the RLC PDU message is sent out
Give MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
4. the method being initially accessed as described in claim 1, it is characterised in that: notice physical layer, which initiates urgent be initially accessed, asks
After asking further include: carry out leading transmission using preset Initial Trans.
5. the method being initially accessed as described in claim 1, it is characterised in that: obtaining preset Initial Trans includes:
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
6. the device that a kind of wireless terminal is initially accessed, which is characterized in that be set to terminal, comprising:
Mark module is set as the urgency traffic attribute requested according to user, the use is marked in radio resource control RRC layer
Family request is emergency service request；
Processing module is set as marking user's request in the message for being sent to middle layer being emergency service request；
AM access module is set as notice physical layer and initiates urgent initial access request.
7. the device being initially accessed as claimed in claim 6, it is characterised in that: the middle layer includes: wireless spread-spectrum technology
Rlc layer and media intervention control MAC layer.
8. the device being initially accessed as claimed in claim 7, it is characterised in that: the processing module is being sent to middle layer
The user request is marked to include: for emergency service request in message
When PDCP layers of progress data encoding packing of Packet Data Convergence Protocol, in Packet Data Convergence Protocol data cell PDCP
It is emergency service request that user's request is marked in PDU message；And the PDCP PDU message is sent to rlc layer；
Rlc layer checks the PDCP PDU message, determines that user's request is emergency service request, assists in wireless spread-spectrum technology
It is emergency service request that user's request is marked in view data cell RLC PDU message, and the RLC PDU message is sent out
Give MAC layer；
MAC layer checks the RLC PDU message, determines that user's request is emergency service request.
9. the device being initially accessed as claimed in claim 6, it is characterised in that: further include: sending module is set as using pre-
If Initial Trans carry out leading transmission.
10. the device being initially accessed as claimed in claim 6, it is characterised in that: the sending module obtains preset initial
Transmission power includes:
Calculate the sum of the initial power lifting values of access request performance number and urgent initial access request immediately；
By calculated result compared with the maximum transmission power of terminal；
The minimum value of acquisition will be compared as Initial Trans.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710612843.0A CN109547993A (en) | 2017-07-25 | 2017-07-25 | A kind of method and apparatus that wireless terminal is initially accessed |
| PCT/CN2018/086333 WO2019019770A1 (en) | 2017-07-25 | 2018-05-10 | Initial access method and apparatus of wireless terminal |
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| CN201710612843.0A CN109547993A (en) | 2017-07-25 | 2017-07-25 | A kind of method and apparatus that wireless terminal is initially accessed |
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Citations (4)
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| CN1728680A (en) * | 2004-07-31 | 2006-02-01 | 华为技术有限公司 | Method for raising performance of data transmission according to transmission control protocol in mobile communication network |
| CN1938969A (en) * | 2004-03-31 | 2007-03-28 | Lg电子株式会社 | Apparatus and method for transmitting data blocks based on priority |
| WO2010114333A2 (en) * | 2009-04-02 | 2010-10-07 | Lg Electronics Inc. | Method for requesting emergency service at mobile station in a wireless communication system |
| CN103312441A (en) * | 2012-03-15 | 2013-09-18 | 华为技术有限公司 | Data packet transmission method and system, transmitting end equipment and receiving end equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140140247A1 (en) * | 2012-11-19 | 2014-05-22 | Qualcomm Incorporated | ENHANCING RELIABILITY OF VoLTE EMERGENCY CALLS |
| CN105163397A (en) * | 2015-08-06 | 2015-12-16 | 大唐移动通信设备有限公司 | Message sending method and device |
-
2017
- 2017-07-25 CN CN201710612843.0A patent/CN109547993A/en active Pending
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2018
- 2018-05-10 WO PCT/CN2018/086333 patent/WO2019019770A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1938969A (en) * | 2004-03-31 | 2007-03-28 | Lg电子株式会社 | Apparatus and method for transmitting data blocks based on priority |
| CN1728680A (en) * | 2004-07-31 | 2006-02-01 | 华为技术有限公司 | Method for raising performance of data transmission according to transmission control protocol in mobile communication network |
| WO2010114333A2 (en) * | 2009-04-02 | 2010-10-07 | Lg Electronics Inc. | Method for requesting emergency service at mobile station in a wireless communication system |
| CN103312441A (en) * | 2012-03-15 | 2013-09-18 | 华为技术有限公司 | Data packet transmission method and system, transmitting end equipment and receiving end equipment |
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Application publication date: 20190329 |