CN102378321A - Radio resource reallocation method and system during deactivation of auxiliary antenna of cell for energy saving - Google Patents
Radio resource reallocation method and system during deactivation of auxiliary antenna of cell for energy saving Download PDFInfo
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- CN102378321A CN102378321A CN2010102499410A CN201010249941A CN102378321A CN 102378321 A CN102378321 A CN 102378321A CN 2010102499410 A CN2010102499410 A CN 2010102499410A CN 201010249941 A CN201010249941 A CN 201010249941A CN 102378321 A CN102378321 A CN 102378321A
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- 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
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Abstract
The invention discloses a radio resource reallocation method during deactivation of an auxiliary antenna of a cell for energy saving. The method comprises the steps that a drift radio network controller (DRNC) informs a service radio network controller (SRNC) about the current multiple input multiple output (MIMO) mode status and the cell identity of an energy-saving cell; and according to the current MIMO mode status and the cell identity of the energy-saving cell, the SRNC reallocates radio resources of user equipment (UE) which are managed by and connected with the SRNC and are in the energy-saving cell. The invention additionally discloses a radio resource reallocation system during the deactivation of the auxiliary antenna of the cell for energy saving. A receiving and reallocation device on the side of the SRNC is used for reallocating the radio resources of the UE which are managed by and connected with the SRNC and are in the energy-saving cell according to the current MIMO mode status and the cell identity of the energy-saving cell. By adopting the method and the system disclosed by the invention, the problems that the UE cannot demodulate downlink data and the UE are finally caused to not normally communicate with the energy-saving cell are solved.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of Radio Resource method for reconfiguration and the system of the auxilliary antenna in sub-district when energy-conservation that close.
Background technology
Continuous development along with the communication technology; People are also increasingly high to the requirement of message transmission rate; Therefore, in 3GPP R5, introduced high speed downlink packet access (HSDPA) technology, and then proposed the evolution technology of future generation of HSDPA: the high speed downlink packet of evolution inserts (HSPA+) technology; HSPA+ technology and HSDPA compared with techniques; One of two kinds of key technologies introducing are: multiple-input, multiple-output (MIMO, Multiple-Input Multiple-Out-put) technology, this MIMO technology can improve the capability of communication system and the availability of frequency spectrum exponentially under the situation that does not increase bandwidth.After introducing the MIMO technology, combine under 16 quadrature amplitude modulation (QAM) situation in the MIMO technology, sub-district and single user's peak rate are 28.8Mbps, combine can reach 43.2Mbps under the 64QAM situation in the MIMO technology.
Yet in order to support the MIMO technology, transmitting terminal need modulate data on two incoherent antennas and send simultaneously, and the recipient also need receive data simultaneously from two incoherent antennas, and carries out demodulation.Therefore; Radio network controller (RNC) need be to getting into the MIMO pattern; And carry out the Node B (NodeB) and the relevant MIMO parameter of subscriber equipment (UE) configuration of transceive data; So that make receiving-transmitting sides can both adopt the modulation system and the demodulation mode deal with data of MIMO pattern, guarantee normally carrying out of communication service.
Along with the popularization of global low-carbon (LC) notion, all trades and professions are all sought more environmental protection, energy-conservation mode is saved the energy, to satisfy needs and the deficient day by day predicament of reply natural resources that improves the environment that goes from bad to worse.The communications industry is no exception; Also actively seeking road energy-conservation, reduction of discharging; Through saving the purpose that operation cost can not only realize that low-carbon (LC) is runed, also can successfully manage keen competition simultaneously and realize increasing income, and equipment energy consumption is an important component part of saving in the operation cost; Therefore, the Continual Improvement to equipment energy consumption is energy-conservation main path.
Usually, a NodeB comprises a baseband processing unit (BBU) and a plurality of RF processing unit (RU), and therefore, the power consumption of practicing thrift RU is to reach NodeB the most suitable energy-conservation approach.Here, generally represent the base station, do not give unnecessary details here with NodeB.
The MIMO pattern needs two cover RU, and every cover RU handles the data on the antenna.At present; In UMTS (UMTS) system; The sub-district advantage that is configured to the MIMO pattern is to improve the user data throughput; It is relevant that but can the UE user in the MIMO sub-district adopt MIMO double fluid mode to dispatch with UE ability, UE amount of user data size and UE user's channel quality indication (CQI), if do not satisfy under the situation of MIMO pattern UE user, and the power consumption that the sub-district still adopts MIMO pattern emission data then can waste RU.Therefore, in order fast current communication environment to be made judgement, when satisfying energy saving condition, implement power-save operation; Save energy consumption to the full extent, NodeB needs the On/Off of one of them RU of adaptive control, i.e. adaptive control is the On/Off of an antenna wherein; Normally control the On/Off of the auxilliary antenna in sub-district; That is to say that the MIMO mode switch of control sub-district is to guarantee to save to the full extent energy consumption.Seldom perhaps traffic carrying capacity is little in current area, to need UE with the MIMO pattern communication; And in the time of need not using the MIMO pattern communication; Can be with the sub-district by the MIMO mode switch to non-MIMO pattern, otherwise, also can be with the sub-district by non-MIMO mode switch to the MIMO pattern.
The UMTS packet network architecture comprises UE, UMTS terrestrial radio access network (UTRAN) and these main architectural elements of core network (CN); Wherein UTRAN comprises a plurality of radio network sub-system (RNS) of a plurality of radio network controllers (RNC); Each RNC can be connected to a plurality of NodeB, and each NodeB can be connected with UE via radio interface (Uu).The RNC of different RNS can connect through the Iur interface; This Iur interface allows the sub-district of given UE in the NodeB control that is subordinated to a RNC, when moving to the sub-district that belongs to another RNCNodeB control, does not carry out service wireless network controller (SRNC; Serving Radio Network Controller) reorientation; That is: the role of SRNC not by with the actual NodeB that is connected of UE under RNC replace, a RNC will serve as SRNS or control radio network controller (CRNC, Controlling Radio Network Controller); And another RNC will serve as floating radio network controller (DRNC, Drift Radio Network Controller).
To SRNC; The data that SRNC is used for being responsible between CN and the UE transmit; And the passing on and receive of the interface signaling of UE and CN, be responsible for being connected of control and this UE, be responsible for the data of air interface are carried out layers two processing; And carry out basic radio resource management operations, like the parameter of switch decision, exterior ring power control and RAB to the conversion of the transport channel parameters of eating dishes without rice or wine etc.
To DRNC, DRNC is used to control the sub-district that this UE uses, and if desired, DRNC can carry out grand branch set also.Only if this UE uses Common transport channel, otherwise DRNC can not carry out layer two processing of user face data, and the route of passing through the Iur interface of the data transparency of just will eating dishes without rice or wine passes to SRNC.The DRNC of a UE can be more than one.
In sum, for guaranteeing to save to the full extent energy consumption, NodeB needs the On/Off of the auxilliary antenna in adaptive control sub-district, that is to say the MIMO mode switch of control sub-district.The sub-district of under NodeB control, carrying out the MIMO mode switch is designated hereinafter simply as energy-conservation sub-district.When the MIMO of energy-conservation sub-district pattern switches, the UE in this energy-conservation sub-district, its relevant MIMO pattern configurations also need be done corresponding reshuffling, and like this, MIMO pattern unanimity just can make UE right demodulation downlink data.Yet the DRNC that links to each other with NodeB under this energy-conservation sub-district only is responsible for the control to the sub-district, and that this UE connection of responsible control is SRNC; If employing prior art; Because SRNC can't be known any message about the MIMO mode switch that energy-conservation sub-district takes place, even if switching has taken place the MIMO pattern of energy-conservation sub-district, SRNC also has no way of learning; Therefore, also just can't carry out the relevant Radio Resource of MIMO pattern to this UE reshuffles.Thereby, certainly will produce owing to the inconsistent UE that causes of the MIMO pattern of UE and energy-conservation sub-district can't the demodulation downlink data, and finally cause the problem that UE and energy-conservation sub-district can't proper communication.
Summary of the invention
In view of this; Main purpose of the present invention is to provide a kind of radio resource management method and the system of the auxilliary antenna in sub-district when energy-conservation that close; Guarantee that UE adopts the MIMO pattern consistent with energy-conservation sub-district to reshuffle; Thereby avoided the UE can't the demodulation downlink data, and finally caused the problem that UE and energy-conservation sub-district can't proper communication.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of Radio Resource method for reconfiguration of the auxilliary antenna in sub-district when energy-conservation of closing, this method comprises: multiple-input, multiple-output (MIMO) mode state that floating radio network controller (DRNC) is current with energy-conservation sub-district and the cell ID of energy-conservation sub-district are informed service wireless network controller (SRNC); Said SRNC is according to the current MIMO mode state in said energy-conservation sub-district and the cell ID of said energy-conservation sub-district, and reprovision SRNC manages the Radio Resource of subscriber equipment (UE) in the said energy-conservation sub-district that connects.
Wherein, the current MIMO mode state in said energy-conservation sub-district specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
Wherein, the MIMO mode state that said energy-conservation sub-district is current and the cell ID of said energy-conservation sub-district are informed SRNC, are to adopt existing Iur mouth Radio Network Subsystem Application Part (RNSAP) layer to send the mode that increases cell in the signaling to realize.
Wherein, the MIMO mode state that said energy-conservation sub-district is current and the cell ID of said energy-conservation sub-district are informed SRNC, are to adopt new means of signaling to realize.
A kind of Radio Resource reconfiguration system of the auxilliary antenna in sub-district when energy-conservation of closing, this system comprises: the reception of the dispensing device of DRNC side and SRNC side and reshuffle device; Wherein,
The dispensing device of said DRNC side is used for the MIMO mode state that energy-conservation sub-district is current and the cell ID of energy-conservation sub-district and informs SRNC;
The reception of said SRNC side and reshuffle device; Be used to receive the current MIMO mode state in said energy-conservation sub-district and the cell ID of energy-conservation sub-district; According to the current MIMO mode state in said energy-conservation sub-district and the cell ID of said energy-conservation sub-district, reprovision SRNC manages the Radio Resource of UE in the said energy-conservation sub-district that connects.
Wherein, the current MIMO mode state in said energy-conservation sub-district specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
Wherein, the dispensing device of said DRNC side when the cell ID that is further used for MIMO mode state that said energy-conservation sub-district is current and said energy-conservation sub-district is informed SRNC, adopts existing Iur mouth RNSAP layer to send the mode that increases cell in the signaling and realizes.
Wherein, the dispensing device of said DRNC side when the cell ID that is further used for MIMO mode state that said energy-conservation sub-district is current and said energy-conservation sub-district is informed SRNC, adopts new means of signaling to realize.
The MIMO mode state that DRNC of the present invention is current with energy-conservation sub-district and the cell ID of energy-conservation sub-district are informed SRNC; SRNC is according to the current MIMO mode state in energy-conservation sub-district and the cell ID of energy-conservation sub-district, and reprovision SRNC manages the Radio Resource of UE in the said energy-conservation sub-district that connects.
Adopt the present invention, adopt the MIMO pattern consistent to reshuffle, thereby avoided the UE can't the demodulation downlink data, and finally cause the problem that UE and energy-conservation sub-district can't proper communication with energy-conservation sub-district owing to can guarantee UE.
Description of drawings
Fig. 1 is the realization flow sketch map of the embodiment of the invention one;
Fig. 2 is the realization flow sketch map of the embodiment of the invention two.
Embodiment
Basic thought of the present invention is: the MIMO mode state that DRNC is current with energy-conservation sub-district and the cell ID of energy-conservation sub-district are informed SRNC; SRNC is according to the current MIMO mode state in energy-conservation sub-district and the cell ID of energy-conservation sub-district, and reprovision SRNC manages the Radio Resource of UE in the said energy-conservation sub-district that connects.
Below in conjunction with accompanying drawing the enforcement of technical scheme is done further to describe in detail.
The problem that scheme of the present invention solved is: in the energy-conservation process of NodeB; Auxilliary antenna in the energy-conservation sub-district of NodeB self adaptation On/Off, that is: after the MIMO pattern of adjustment by an energy-conservation sub-district of NodeB control, SRNC can't judge correctly that its UE that connects that manages connects the current MIMO mode state in energy-conservation sub-district; Can't carry out the relevant Radio Resource reprovision of MIMO pattern to this UE; That is to say that even if switching has taken place the MIMO pattern of energy-conservation sub-district, SRNC also has no way of learning; Therefore; Also just can't carry out the relevant Radio Resource of MIMO pattern and reshuffle this UE, can be with producing owing to the inconsistent UE that causes of the MIMO pattern of UE and energy-conservation sub-district can't the demodulation downlink data, problem that finally can't proper communication.
A kind of Radio Resource method for reconfiguration of the auxilliary antenna in sub-district when energy-conservation of closing, this method mainly comprises following content:
One, the MIMO mode state that DRNC need be current with energy-conservation sub-district and the cell ID of energy-conservation sub-district are informed SRNC.
Two, SRNC is according to the current MIMO mode state in this energy-conservation sub-district and the cell ID of this energy-conservation sub-district, and reprovision SRNC manages the Radio Resource of UE in this energy-conservation sub-district of connection.
Further, said MIMO mode state specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
Further; The said MIMO mode state that energy-conservation sub-district is current and the cell ID of energy-conservation sub-district are informed SRNC; Can pass through at existing Iur mouth Radio Network Subsystem Application Part (RNSAP; Radio Network Subsystem Application Part) mode that increases cell in the layer transmission signaling is carried out, and in the cell of this increase, encapsulates the current MIMO mode state in energy-conservation sub-district and the cell ID of energy-conservation sub-district that is:; Perhaps, the said MIMO mode state that energy-conservation sub-district is current and the cell ID of energy-conservation sub-district are informed SRNC, also can be through increasing the new signaling transmission that an existing protocol does not provide.To new signaling; This new signaling can be the dedicated signaling that only designs for the MIMO mode state that transmits an energy-conservation sub-district; The status of user equipment that is similar to the Iub mouth upgrades the design of (UE STATUS UPDATE) this signaling, only is the ERNTI resource for a UE who discharges the NodeB management during design; This new signaling also can be for being suitable for the dedicated signaling that multiple energy-saving scheme designs, (so that be applied to several kinds of energy-saving schemes simultaneously.Here it is to be noted: except that the follow-up scheme that also has other the energy-conservation scheme of cell mimo of closing of the application's description.) this section words need not embody in patent, just are applicable to our communication.
Below to the present invention's elaboration of giving an example.
Embodiment one: current MIMO mode state is: energy-conservation sub-district is non-MIMO pattern by the MIMO mode switch.As shown in Figure 1, may further comprise the steps:
Step 110:DRNC sends MIMO mode switch request message and gives SRNC.
Here, in this MIMO mode switch request message, comprise the current MIMO mode state of cell ID and energy-conservation sub-district of this energy-conservation sub-district.The current MIMO mode state in energy-conservation sub-district is: energy-conservation sub-district is non-MIMO pattern by the MIMO mode switch.
Here, MIMO mode switch request message can send through Iur mouth RNSAP layer.
Here, above-mentioned energy-conservation sub-district is that non-MIMO pattern can be expressed as by the MIMO mode switch: MIMOto Non-MIMO Change decision; MIMO mode switch request message can be expressed as: MIMO Mode Change Request, and the cell ID of the energy-conservation sub-district of carrying can be expressed as: Cell ID; The current MIMO mode state in the energy-conservation sub-district of carrying can be expressed as: Mode Ind.
After step 120:SRNC receives MIMO mode switch request message, send Radio Link Management message and give DRNC.
Here, Radio Link Management message can be expressed as: Radio Link Management.
Step 130:SRNC is according to the current MIMO mode state of cell ID and energy-conservation sub-district from the energy-conservation sub-district that DRNC receives; Send radio-resource-configuration message and give the UE in this energy-conservation sub-district; By SRNC management this UE that it connected, carry out relevant the reshuffling of MIMO mode switch.
Here, radio-resource-configuration message can be expressed as: Radio Source Configuration.
Embodiment two: current MIMO mode state is: energy-conservation sub-district is the MIMO pattern by non-MIMO mode switch.As shown in Figure 2, may further comprise the steps:
Step 210:DRNC sends MIMO mode switch request message and gives SRNC.
Here, in this MIMO mode switch request message, comprise the current MIMO mode state of cell ID and energy-conservation sub-district of this energy-conservation sub-district.The current MIMO mode state in energy-conservation sub-district is: energy-conservation sub-district is the MIMO pattern by non-MIMO mode switch.
Here, MIMO mode switch request message can send through Iur mouth RNSAP layer.
Here, above-mentioned energy-conservation sub-district can be expressed as for the MIMO pattern by non-MIMO mode switch: Non-MIMO to MIMO Change decision; MIMO mode switch request message can be expressed as: MIMO Mode Change Request, and the cell ID of the energy-conservation sub-district of carrying can be expressed as: Cell ID; The current MIMO mode state in the energy-conservation sub-district of carrying can be expressed as: Mode Ind.
After step 220:SRNC receives MIMO mode switch request message, send Radio Link Management message and give DRNC.
Here, Radio Link Management message can be expressed as: Radio Link Management.
Step 230:SRNC is according to the current MIMO mode state of cell ID and energy-conservation sub-district from the energy-conservation sub-district that DRNC receives; Send radio-resource-configuration message and give the UE in this energy-conservation sub-district; By the SRNC management UE that it connected, carry out relevant the reshuffling of MIMO mode switch.
Here, radio-resource-configuration message can be expressed as: Radio Source Configuration.
A kind of Radio Resource reconfiguration system of the auxilliary antenna in sub-district when energy-conservation of closing, this system comprises: the reception of the dispensing device of DRNC side and SRNC side and reshuffle device.Wherein, the dispensing device of DRNC side is used for the MIMO mode state that energy-conservation sub-district is current and the cell ID of energy-conservation sub-district and informs SRNC; The reception of SRNC side and reshuffle device and be used to receive the current MIMO mode state in energy-conservation sub-district and the cell ID of energy-conservation sub-district; According to the current MIMO mode state in energy-conservation sub-district and the cell ID of energy-conservation sub-district, reprovision SRNC manages the Radio Resource of UE in the energy-conservation sub-district that connects.
Here, the current MIMO mode state in energy-conservation sub-district specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
Here, when the cell ID that the dispensing device of DRNC side is further used for MIMO mode state that energy-conservation sub-district is current and energy-conservation sub-district is informed SRNC, adopt existing Iur mouth RNSAP layer to send the mode that increases cell in the signaling and realize.
Here, when the cell ID that the dispensing device of DRNC side is further used for MIMO mode state that energy-conservation sub-district is current and energy-conservation sub-district is informed SRNC, adopt new means of signaling to realize.
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention.
Claims (8)
1. close the Radio Resource method for reconfiguration of the auxilliary antenna in sub-district when energy-conservation for one kind; It is characterized in that this method comprises: multiple-input, multiple-output (MIMO) mode state that floating radio network controller (DRNC) is current with energy-conservation sub-district and the cell ID of energy-conservation sub-district are informed service wireless network controller (SRNC); Said SRNC is according to the current MIMO mode state in said energy-conservation sub-district and the cell ID of said energy-conservation sub-district, and reprovision SRNC manages the Radio Resource of subscriber equipment (UE) in the said energy-conservation sub-district that connects.
2. method according to claim 1; It is characterized in that the current MIMO mode state in said energy-conservation sub-district specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
3. method according to claim 1; It is characterized in that; The MIMO mode state that said energy-conservation sub-district is current and the cell ID of said energy-conservation sub-district are informed SRNC, are to adopt existing Iur mouth Radio Network Subsystem Application Part (RNSAP) layer to send the mode that increases cell in the signaling to realize.
4. method according to claim 1 is characterized in that, the MIMO mode state that said energy-conservation sub-district is current and the cell ID of said energy-conservation sub-district are informed SRNC, is to adopt new means of signaling to realize.
5. close the Radio Resource reconfiguration system of the auxilliary antenna in sub-district when energy-conservation for one kind, it is characterized in that this system comprises: the reception of the dispensing device of DRNC side and SRNC side and reshuffle device; Wherein,
The dispensing device of said DRNC side is used for the MIMO mode state that energy-conservation sub-district is current and the cell ID of energy-conservation sub-district and informs SRNC;
The reception of said SRNC side and reshuffle device; Be used to receive the current MIMO mode state in said energy-conservation sub-district and the cell ID of energy-conservation sub-district; According to the current MIMO mode state in said energy-conservation sub-district and the cell ID of said energy-conservation sub-district, reprovision SRNC manages the Radio Resource of UE in the said energy-conservation sub-district that connects.
6. system according to claim 5; It is characterized in that the current MIMO mode state in said energy-conservation sub-district specifically comprises: energy-conservation sub-district by the MIMO mode switch be non-MIMO pattern, or energy-conservation sub-district by non-MIMO mode switch be the MIMO pattern, or energy-conservation sub-district do not use the MIMO pattern, or energy-conservation sub-district use the MIMO pattern.
7. system according to claim 5; It is characterized in that; The dispensing device of said DRNC side; When the cell ID that is further used for MIMO mode state that said energy-conservation sub-district is current and said energy-conservation sub-district is informed SRNC, adopt existing Iur mouth RNSAP layer to send the mode that increases cell in the signaling and realize.
8. system according to claim 5 is characterized in that, the dispensing device of said DRNC side when the cell ID that is further used for MIMO mode state that said energy-conservation sub-district is current and said energy-conservation sub-district is informed SRNC, adopts new means of signaling to realize.
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| WO2013067813A1 (en) * | 2011-11-10 | 2013-05-16 | 中兴通讯股份有限公司 | Multiple input multiple output configuration method and radio network controller |
| CN103947277A (en) * | 2012-09-26 | 2014-07-23 | 华为技术有限公司 | Method and device for indicating state of pilot frequency |
| CN104160776A (en) * | 2012-09-26 | 2014-11-19 | 华为技术有限公司 | Method and device for indicating state of pilot frequency |
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| US20100118784A1 (en) * | 2007-04-30 | 2010-05-13 | Göransson Bo | Recommending a Transmission Mode for a MIMO-Supporting UE |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103107865A (en) * | 2011-11-10 | 2013-05-15 | 中兴通讯股份有限公司 | Judging method of multiple input multiple output mode and wireless network controller |
| WO2013067813A1 (en) * | 2011-11-10 | 2013-05-16 | 中兴通讯股份有限公司 | Multiple input multiple output configuration method and radio network controller |
| CN103947277A (en) * | 2012-09-26 | 2014-07-23 | 华为技术有限公司 | Method and device for indicating state of pilot frequency |
| CN104160776A (en) * | 2012-09-26 | 2014-11-19 | 华为技术有限公司 | Method and device for indicating state of pilot frequency |
| CN103947277B (en) * | 2012-09-26 | 2017-11-17 | 华为技术有限公司 | The method and apparatus for indicating pilot conditions |
| CN104160776B (en) * | 2012-09-26 | 2018-05-18 | 华为技术有限公司 | The method and apparatus for indicating pilot conditions |
| CN105850209A (en) * | 2014-10-31 | 2016-08-10 | 华为技术有限公司 | Access method and device |
| US10292052B2 (en) | 2014-10-31 | 2019-05-14 | Huawei Technologies Co., Ltd. | Access method and device |
| CN105850209B (en) * | 2014-10-31 | 2019-06-21 | 华为技术有限公司 | A kind of cut-in method and equipment |
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| CN102378321B (en) | 2016-06-15 |
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