CN101119581A - Method for transmitting service quality information in evolvement network - Google Patents
Method for transmitting service quality information in evolvement network Download PDFInfo
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Abstract
The present invention discloses a method for delivering services quality in an LTE network, which is characterized in that: when an LTE wireless access network receives the services quality information, in the event the wireless network can not satisfy the current services quality demand, then by utilizing the services quality information received, through services quality information negotiation in or within labels; the services quality information negotiated already is returned back to the LTE PCN. In the LTE network, through the QoS negotiation mechanism of the invention, when the LTE network can not meet the current services quality demand, according to self resources conditions including resources availability and loading conditions etc., QoS parameters for the current services is renegotiated, ensuring the success rate of the UE services utilization, and improving the trust of the user.
Description
Technical field
The present invention relates to evolvement network (Evolved Network) technology, refer to the method for transmitting service quality information in a kind of evolvement network especially.
Background technology
At present, third generation partner program (3GPP) is being studied the next generation network after the evolution of UMTS network, and the technical standard of formulation evolvement network, abbreviate the next generation network after universal mobile telecommunications system (UMTS, Universal Mobile Telecommunications System) the network evolution as evolvement network herein.The target of evolvement network provides a kind of low time delay, high data rate, high power system capacity and covering, low cost, and complete IP-based network.
Fig. 1 is the structural representation of packet-based core networks in the evolvement network of present 3GPP definition, and as shown in Figure 1, evolvement network comprises evolution block core net (Evolved Packet Core) and evolution wireless access network (LTE-RAN).
Wherein, three logical functional entities are arranged, Mobility Management Entity (MME, Mobility Management Entity), user entity (UPE among the Evolved Packet Core, User Plane Entity) anchor point (IASA, Inter AS Anchor) and between connecting system.MME is used to realize mobile management, comprises the management of user's context and mobile status, distributing user temporary identity sign etc.; UPE is used to realize that packet sessions is managed and the processing of user plane packets data, and being responsible under the idle condition is that downlink data is initiated paging, and IP bearing parameter and the interior routing iinformation of network etc. are preserved in management; Inter AS Anchor is used to realize access, evolvement network and other non-3 GPP access network such as switching between wireless lan (wlan) or the wireless local 3GPP Access Network and the roaming etc. of evolvement network and outside PDN.Among Fig. 1, MME and UPE are incorporated in a physical equipment, and MME also can belong to different physical equipments with UPE.
LTE-RAN mainly provides wireless air interface such as wireless channel, and relevant function such as power control, the RRM etc. of Radio Resource, and the base station that is arranged in LTE-RAN is referred to herein as evolution base station (eNodeB).Interface between LTE-RAN and the Evolved Packet Core is the S1 interface, interface between Evolved Packet Core and the outside PDN is the Gi interface, interface between Evolved Packet Core and non-3 GPP access network and the wireless local 3GPP Access Network is the S2 interface, interface between EvolvedPacket Core and the GPRS core net is the S4 interface, and the interface between MME/UPE and the GPRS core net is the S3 interface.
In addition, strategy and charging regulation function entity (PCRF, Policy and Charging RuleFunction) are used for implementation strategy control decision and flow based charging controlled function among Fig. 1.Home network server (HSS, Home Subscriber Server) is used for storing user subscription information.Here need to prove each interface function and whether exist at present and also finally not determine that the relation of MME, UPE and IASA is yet not final simultaneously determines that this paper does not limit structure shown in Figure 1 among Fig. 1.
At present, transmitting quality of service attribute (Qos Attributes) on the S1 interface in evolvement network is that the mode of QoS information has following four kinds:
1) on the S1 interface, takes the method for similar UMTS, directly transmit QoS attributes;
2) on the S1 interface, transmit Qos label (label), assurance bit rate (GBR, GuaranteedBit Rate), Maximum Bit Rate (MBR, Maximum Bit Rate) etc. parameter wherein, is set up mapping relations between Qos label and the service quality appearance (QoS profile);
3) transmit Qos label, parameters such as GBR, MBR on the S1 interface, wherein, the mapping of Qos label and QoS profile is by pre-configured realization;
4) transmit Qos label, parameters such as GBR, MBR on the S1 interface, wherein, Qos label is mapped to standardized accordingly Business Processing behavior (THB, Traffic HandlingBehavior) by configuration.
Wherein, Qos label represents a linear deictic word, and it can be an integer that this deictic word and evolution QoS profile or Business Processing behavior (THB, Traffic Handling Behavior) exist mapping relations, Qos label; THB is used to describe the processing rule of a group node to the packet received; QoSprofile represents one group (polynary group) standardized system architecture evolution QoSattributes that has distributed value.
In evolvement network, resource is set up and Qos signaling process process, be used for providing Qos/ policy information to the network entity of the wireless/Internet resources of control, the Qos/ policy information of the network entity of wireless/Internet resources by receiving, distribute, reserve wireless network resource, and this wireless network resource is controlled by the availability of the ability of user's CAMEL-Subscription-Information, wireless/network, wireless/Internet resources, certain carrier policy, and employed business.
Resource is set up by set up request message from the resource of PCRF and is triggered, and PCRF is interpreted as necessary strategy/service quality (Policy/Qos) information with media information and is carried at resource and sets up and be handed down to MME/UPE in the request message; And MME/UPE checks that the resource authorize is whether consistent with the permission situation that is provided with in the user signing contract information, and to LTE-RAN initiation resource allocation process, corresponding evolvement network wireless access network functional entity (LTE-RAN functions) is checked the availability of resource, and set up requested resource, notify the related of radio-resource-configuration, IP stream and Radio Resource that UE should business at last, thereby finish the foundation of resource.
At present, resource set up and Qos signaling process process in only provided resource and set up and need to carry QoS information in the flow process, and how to consult not provide the specific implementation method for QoS information, like this, when the LTE-RAN functional entity can't satisfy the QoS requirement of the QoS information correspondence that receives, the LTE-RAN functional entity can be abandoned wireless resource allocation, thereby business that may interruption U E current request has reduced the degree of belief of user to network.
Outside, in the Evolved-RAN of evolvement network, switch in (HO) process, only having proposed needs to transmit QoS information at source eNodeB in handoff request (HO request) message that target eNode B sends, and for the particular content of the QoS information of transmitting, how to transmit and consult then not provide the specific implementation method, like this, the target eNode B that UE switches to may cause handoff failure because not satisfying the QoS demand of UE, increased the probability that can not guarantee the handoff failure that causes owing to service quality, thereby business that may interruption U E current request has reduced the degree of belief of user to network.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for transmitting service quality information in a kind of evolvement network, can hold consultation to the QoS information of transmitting.
For achieving the above object, technical scheme of the present invention specifically is achieved in that
The method of delivering service quality QoS information in a kind of evolvement network, this method comprises:
After the evolution wireless access network receives quality of service information, if self can not satisfy the current service quality requirement, then utilize the quality of service information receive,, and the quality of service information that consults returned evolution block core net by consulting service quality parameter between label or in the label.
The QoS information that described evolution wireless access network receives comprises: preferred service mass parameter and optional QoS parameter.
The method of described negotiation QoS information is: according to the current resource situation of described evolution wireless access network, qos policy according to the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in the optional QoS label in described optional quality of service information is as the QoS parameter of consulting.
If do not carry optional QoS label in the described optional QoS parameter, the method for then described negotiation QoS information is:
The QoS label information of corresponding relation between pre-configured sign QoS label and the service quality in described evolution wireless access network;
According to pre-configured QoS label information, according to the qos policy of the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in described QoS label information is as the QoS label of consulting.
The QoS information that described evolution wireless access network receives comprises the preferred service mass parameter.
The QoS label information of corresponding relation between pre-configured sign QoS label and the service quality in described evolution wireless access network;
The method of described negotiation QoS information is: according to pre-configured QoS label information, qos policy according to the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in described QoS label information is as the QoS label of consulting.
Described preferred service mass parameter comprises: the QoS label.
Described preferred service mass parameter also comprises: guarantee bit rate GBR, and/or Maximum Bit Rate MBR.
Described optional QoS parameter comprises: optional QoS label information, and/or guarantee bit rate GBR information, and/or Maximum Bit Rate MBR information.
If described optional QoS parameter comprises optional QoS label, then described optional QoS label is: one or more QoS label values, or a negotiable span, or expression QoS label value allows the side-play amount of the scope of fluctuating.
The described quality of service information that consults comprises: the QoS label information of having consulted.
The described quality of service information that consults also comprises: the GBR of employing, and/or MBR information.
The described QoS label information of having consulted is: one or more QoS label values, or a negotiable span, or expression QoS label value allows the side-play amount of the scope of fluctuating.
Described quality of service information is carried at Radio Resource and sets up request message, or sends to the evolution wireless access network functional entity LTE-RANfunctions in the described evolution wireless access network in the handoff request message.
The entity of finishing negotiation in the described evolution wireless access network is evolution base station eNodeB.
As seen from the above technical solution, the present invention is in evolvement network, negotiation mechanism by QoS, when network self can not satisfy the current service quality requirement, can use situation and the information such as load of self according to own resource situation such as resource, again consult qos parameter for current business, guaranteed that UE uses professional success rate, improved the degree of belief of user network.
Description of drawings
Fig. 1 is the structural representation of packet-based core networks in the evolvement network of present 3GPP definition;
Fig. 2 is that resource of the present invention is set up the flow chart of realizing the QoS negotiation in the process;
Fig. 3 realizes the flow chart that QoS consults in the HO process of the present invention.
Embodiment
Core concept of the present invention is: after the evolution wireless access network receives quality of service information, if self can not satisfy the current service quality requirement, then utilize the quality of service information that receives, by consulting service quality parameter between label or in the label, and the quality of service information that consults returned evolution block core net.
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.
The specific implementation method of consulting in negotiation and the label between label is respectively:
(1) if the quality of service information that the evolution wireless access network receives comprises preferred service mass parameter and optional QoS parameter, then by consulting between label, just can use situation and the information such as load of self according to the current resource situation such as the resource of evolution wireless access network, the QoS label of selecting suitable QoS label promptly to select the current resource situation of evolution wireless access network to satisfy in the optional QoS label in optional QoS parameter is as the QoS label of consulting.Comprise the QoS label in the preferred service mass parameter, also can further comprise bit rate (GBR, Guaranteed Bit Rate) and/or the Maximum Bit Rate information such as (MBR, Maximum Bit Rate) that adopts of guaranteeing; Except can comprising information such as GBR, MBR, can also comprise information such as negotiable optional QoS label in the optional QoS parameter,, then carry out consulting in the label if do not carry optional QoS label in the optional QoS parameter.
Wherein, optional QoS label in the optional QoS parameter can be one or more concrete QoS label values, also can be a negotiable span, can also be a side-play amount, this side-play amount represents that the QoS label can fluctuate in the scope of this side-play amount indication.Such as: when optional QoS label was concrete QoS label value, the evolution wireless access network can be according to the qos policy that sets in advance, and the optional QoS label of selecting self can satisfy is as the QoS label of consulting; When optional QoS label is a negotiable span, the evolution wireless access network can be according to the qos policy that sets in advance, according to this span the QoS label in the preferred service quality information is adjusted, make the current resource situation of evolution wireless access network can satisfy the QoS requirement of adjusted QoS label value correspondence, and will this adjusted QoS label as the QoS label of consulting; When the QoS label was a side-play amount, using method and span were similar, no longer described in detail here.
Need to prove, the qos policy that sets in advance represents which kind of standard to consult qos parameter according to, it can be the best qos parameter that negotiates the current resource situation that can satisfy the evolution wireless access network, it also can be the qos parameter or the like that negotiates the minimum standard of the current resource situation that can satisfy the evolution wireless access network, the realization of qos policy is a lot, depend on the demand of operator, do not limit here.
(2) if the quality of service information that the evolution wireless access network receives only comprises the preferred service mass parameter, then by consulting in the label, just according to the QoS label information of corresponding relation between pre-configured sign QoS label and the service quality, the QoS label of selecting suitable QoS label promptly to select the current resource situation of evolution wireless access network to satisfy in the QoS label information that configures is as the QoS label of consulting.
Wherein, pre-configured QoS label information is meant, the evolution wireless access network functional entity (LTE-RAN functions) in the evolution wireless access network as eNodeB in, the corresponding relation of the QoS label of configuration and a plurality of Qos Profile or THB; Or QoS label and the corresponding relation of giving tacit consent to negotiable QoS label, have corresponding relation and give tacit consent between negotiable QoS label and service Qos Profile or the THB; Or the corresponding relation of the side-play amount of QoS label and acquiescence, this side-play amount represents that the QoS label can fluctuate in the scope of this side-play amount definition.Qos Profile information can comprise: maximum traffic data unit size (Max SDU Size), propagation delay time (Transfer Delay), Business Processing priority parameters such as (Traffic Handling Priority).Consult to select suitable QoS label, the same as among the method for the QoS label of consulting and (one) just is the negotiation of carrying out according to pre-configured QoS label information rather than optional quality of service information here, and specific implementation repeats no more here.
Need to prove, whether comprise of the configuration decision of optional quality of service information in the quality of service information by core net, if do not comprise optional quality of service information in the quality of service information, then core net need can indicate whether to consult, so that Access Network adopts the QoS label information to carry out consulting in the label according to indication.
Through after the above-mentioned negotiation, LTE-RAN functional entity in the evolution wireless access network such as eNodeB can return to the QoS information of the QoS label correspondence that consults entity such as the MME/UPE in the evolution core net.The QoS information that this consults can comprise the QoS label information of having consulted, the information such as GBR, MBR of employing.The QoS label information of having consulted can be: a definite QoS label value, or an offset value, network side can calculate the QoS label value that evolvement network wireless access network functional entity (LTE-RAN functions) is consulted according to this side-play amount.
Below in conjunction with two embodiment, the inventive method is described in detail.
Fig. 2 is that resource of the present invention is set up the flow chart of realizing the QoS negotiation in the process, may further comprise the steps:
Having set up signaling between step 200:UE and network on acquiescence IP access bearer is connected.This step belongs to prior art, can stipulate with reference to related protocol, no longer describes in detail here.
Step 201:MME/UPE receives resource request message, triggers resource and sets up process.
Carry the Policy/Qos information relevant in this resource request message with the business of current use.
Policy/Qos information be PCRF according to user's the CAMEL-Subscription-Information and the class of service of current use, determine in conjunction with the strategy of the processing policy of PCRF and operator.
In the present embodiment, suppose to comprise in the Qos information preferred Qos information and optional Qos information, the service quality performance that the network of preferred Qos information correspondence provides is best, and the service quality performance that the network of optional QoS information correspondence provides is to satisfy the quality requirement of the business of user's current request.
Step 202:MME/UPE checks the CAMEL-Subscription-Information of UE, finishes access control according to the Qos information of receiving and the availability of resource.
Whether access control belongs to prior art, simply is exactly to check own resource, loading condition and user signing contract information, allow the user to insert this business.
Step 203:MME/UPE initiates Radio Resource to the LTE-RAN of corresponding evolvement network wireless access network functional entity and sets up request.
Radio Resource is set up the QoS information of carrying in the request and is comprised preferred Qos information and optional Qos information.
In the present embodiment, suppose to comprise in the preferred Qos information: information such as Qos label, GBR and MBR; Comprise information such as negotiable Qos label, GBR and MBR in the optional Qos information.
Step 204:LTE-RAN functional entity is finished access control, the QoS information translation (mapping) that receives is wireless QoS information, and finish the configuration of allocation of radio resources and scheduling mechanism, simultaneously, when the LTE-RAN functional entity can't satisfy the pairing QoS requirement of QoS label that carries in the preferred QoS information that receives, the pairing QoS parameter of QoS label is held consultation according to the own resource situation.
In this step, the translation of access control, QoS information and the configuration of allocation of radio resources and scheduling mechanism belong to prior art, and the specific implementation process can no longer describe in detail here referring to related protocol.
What this step was emphasized is when the LTE-RAN functional entity can't satisfy current QoS requirement, can negotiate the QoS parameter that self can satisfy again with situation and the information such as load of self according to situation such as the resource of self.Concrete machinery of consultation is described in detail in preamble (), repeats no more here.
Step 205:LTE-RAN functional entity provides the related information of the necessary radio configuration information of current business, Radio Resource and IP stream to UE.
Step 206:LTE-RAN functional entity sends Radio Resource to MME/UPE and sets up response message.
Set up in the response message at Radio Resource, carry the LTE-RAN functional entity and consult the QoS information that adopt the back.
The result that step 207:MME/UPE reports resource to set up reaches the QoS information that has consulted.
From step 204 as seen, when the LTE-RAN functional entity can't satisfy the pairing QoS requirement of QoS label that carries in the preferred QoS information that receives, the LTE-RAN functional entity can be according to the own resource situation, for current business is consulted qos parameter again, guaranteed that UE uses professional success rate, improved the degree of belief of user network.
Fig. 3 realizes in the HO process of the present invention may further comprise the steps the flow chart that QoS consults:
Step 300: the roaming restricted information is provided.
UE context in the eNodeB of source includes the roaming restricted information, and when connection is set up or the last time tracking area update (TA Update) time is provided this roaming restricted information.
Step 301: source eNodeB is according to the measuring process of roaming restricted information configuration UE, and and UE between measure control.
Step 302: source eNodeB is according to the measurement result of UE and the RRM of source eNodeB (RRM, Radio Resource Management) information, and decision switches to UE in certain sub-district (cell) of being controlled by purpose eNodeB.
The specific implementation of step 300～step 302 belongs to prior art, can no longer describe in detail here referring to related protocol.
Step 303: source eNodeB sends HO request (HO Request) message to target eNode B.
The target side that carries the agreement regulation in the HO request message is switched required resource requirement information, target eNode B disposes the resource that needs, outside, also comprise the current QoS information of using of UE in this HO request message of the present invention, or current QoS information of using of UE and optional QoS information.
The current QoS information of using of UE comprises the QoS label, can further include information such as GBR and/or MBR; Optional QoS information comprises the QoS label, and/or GBR, and/or information such as MBR.
Step 304: target eNode B is carried out access control, QoS negotiation according to the availability of Qos information of receiving and own resource.
Switch required resource requirement if target eNode B can satisfy, then target eNode B is finished access control to improve the possibility of handover success.When target eNode B is carried out access control, judge the QoS requirement that self whether can satisfy the current QoS information correspondence of using of the UE that carries in the HO request message, if can not, then QoS information is held consultation, the described two kinds of methods of negotiation method such as preamble (one) and (two) no longer repeat here.
Step 305: after target eNode B is finished and switched access control, send the information that the UE that carries the agreement regulation in this HO response message of HO response (HO Response) message reshuffles wireless path to source eNodeB.
Step 306: source eNodeB sends HO order (HO Command) message to UE, triggers handoff procedure after receiving this HO command messages, carries the wireless resource information of target eNode B in this HO command messages.
Carry out the synchronizing process of layer one/layer two (L1/L2) between step 307～step 308:UE and target eNode B, in case successfully insert Target cell, UE sends HO to target eNode B and finishes (HO Complete) message and represent to switch and finish.
The specific implementation of step 305～step 308 can be stipulated referring to related protocol, no longer describes in detail here.
Step 309: target eNode B sends HO to MME/UPE and finishes message, and notice MME/UPE, UE have finished the sub-district and switched, and UPE switches to target eNode B with data path, and the relevant user's face of source of release eNodeB and the resource of transport network layer.
Finish in the message at HO, carry the target eNode B QoS information of back employing through consultation.
Step 310:MME/UPE entity sends HO to target eNode B and finishes response (HO CompleteACK) message.
Step 311: target eNode B sends resource to source eNodeB and discharges (Release Resource) message, and source eNodeB discharges resource.
According to agreement regulation, target eNode B can directly send this resource release message receiving after HO from UE finishes message.
Step 312: after source eNodeB receives resource release message, discharge and the resource of UE context-sensitive wireless and chain of command.
At this moment, source eNodeB should continue to finish the data forwarding to target eNode B, realizes up to one that relevant machine-processed determination data is transmitted and can stop and till the resource of user's face/transport network layer can be released.
Step 313: if UE current switch to new sub-district belong to new tracing area (TA, TraceArea), then UE need carry out the TA registration to MME/UPE, MME/UPE will upgrade the region limits information of target eNode B.
From step 304 as seen, can't satisfy the required resource requirement of switching in target eNode B, in the time of also promptly can not satisfying the pairing QoS requirement of the current QoS information of using of UE, target eNode B can be according to the own resource situation, again consult qos parameter, guaranteed that target eNode B that UE switches to satisfies the QoS demand of UE, reduced the probability that can not guarantee the handoff failure that causes owing to service quality, thereby improved the degree of belief of user network.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (15)
1. the method for delivering service quality QoS information in the evolvement network is characterized in that this method comprises:
After the evolution wireless access network receives quality of service information, if self can not satisfy the current service quality requirement, then utilize the quality of service information receive,, and the quality of service information that consults returned evolution block core net by consulting service quality parameter between label or in the label.
2. method according to claim 1 is characterized in that, the QoS information that described evolution wireless access network receives comprises: preferred service mass parameter and optional QoS parameter.
3. method according to claim 2, it is characterized in that, the method of described negotiation QoS information is: according to the current resource situation of described evolution wireless access network, qos policy according to the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in the optional QoS label in described optional quality of service information is as the QoS parameter of consulting.
4. method according to claim 2 is characterized in that, if do not carry optional QoS label in the described optional QoS parameter, the method for then described negotiation QoS information is:
The QoS label information of corresponding relation between pre-configured sign QoS label and the service quality in described evolution wireless access network;
According to pre-configured QoS label information, according to the qos policy of the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in described QoS label information is as the QoS label of consulting.
5. method according to claim 1 is characterized in that, the QoS information that described evolution wireless access network receives comprises the preferred service mass parameter.
6. method according to claim 5 is characterized in that, the QoS label information of corresponding relation between pre-configured sign QoS label and the service quality in described evolution wireless access network;
The method of described negotiation QoS information is: according to pre-configured QoS label information, qos policy according to the negotiation qos parameter that sets in advance, the QoS label that the current resource situation of the described evolution wireless access network of selection can satisfy in described QoS label information is as the QoS label of consulting.
7. according to claim 2 or 5 described methods, it is characterized in that described preferred service mass parameter comprises: the QoS label.
8. method according to claim 7 is characterized in that, described preferred service mass parameter also comprises: guarantee bit rate GBR, and/or Maximum Bit Rate MBR.
9. method according to claim 2 is characterized in that, described optional QoS parameter comprises: optional QoS label information, and/or guarantee bit rate GBR information, and/or Maximum Bit Rate MBR information.
10. method according to claim 9, it is characterized in that, if described optional QoS parameter comprises optional QoS label, then described optional QoS label is: one or more QoS label values, or a negotiable span, or expression QoS label value allows the side-play amount of the scope of fluctuating.
11. method according to claim 1 is characterized in that, the described quality of service information that consults comprises: the QoS label information of having consulted.
12. method according to claim 11 is characterized in that, the described quality of service information that consults also comprises: the GBR of employing, and/or MBR information.
13. method according to claim 11 is characterized in that, the described QoS label information of having consulted is: one or more QoS label values, or a negotiable span, or expression QoS label value allows the side-play amount of the scope of fluctuating.
14. method according to claim 1, it is characterized in that, described quality of service information is carried at Radio Resource and sets up request message, or sends to the evolution wireless access network functional entity LTE-RAN functions in the described evolution wireless access network in the handoff request message.
15. method according to claim 1 is characterized in that, the entity of finishing negotiation in the described evolution wireless access network is evolution base station eNodeB.
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| WO2018233451A1 (en) * | 2017-06-19 | 2018-12-27 | 华为技术有限公司 | Communication method, apparatus, and system |
| CN109150808A (en) * | 2017-06-19 | 2019-01-04 | 华为技术有限公司 | Communication means, device and system |
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