CN104349352A

CN104349352A - Interference coordination method, equipment and system

Info

Publication number: CN104349352A
Application number: CN201310326177.6A
Authority: CN
Inventors: 胡文权; 花梦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-07-30
Filing date: 2013-07-30
Publication date: 2015-02-11
Anticipated expiration: 2033-07-30
Also published as: CN104349352B; WO2015014194A1

Abstract

The invention discloses an interference coordination method, equipment and system, relates to the technical field of communication, and is used for guaranteeing that a micro-station is capable of reliably receiving uplink data of user equipment UE in micro-station service. The method comprises the following steps: the micro-station detecting the condition of sending information of the first UE in the user equipment in macro-station service in random access process to obtain a detection result; determining interference warning information according to the detection result; sending the interference warning information to the second UE in the micro-station service, correspondingly, the second UE in the micro-station service receiving the interference warning information sent by the micro-station; and controlling the transmission of the uplink data to the micro-station according to the interference warning information.

Description

A kind of method, apparatus and system of interference coordination

Technical field

The present invention relates to communication technical field, particularly relate to a kind of method, apparatus and system of interference coordination.

Background technology

Along with popularizing of smart mobile phone, mobile data services present high speed development situation.The research report prediction mobile data services throughput over the next several years of Virtual network operator will exponentially mode increase.Heterogeneous network (HetNet, Heterogeneous Networks) is considered to a kind of and tackles the demand effectively and the solution of economy.HetNet is a kind of network configuration by the mixed deployment of grand Microcell, in raising network capacity and expansion covering, have significant advantage.

For the HetNet of identical networking, refer to that macro station is identical with the operating frequency at micro-station, and micro-station is deployed in macro station coverage.According to the difference of grand picocell coverage area, downlink network overlay area can be roughly divided into two parts: the region to be the region of macro station and Serving cell be in Serving cell micro-station.

As the subscriber equipment (UE that Serving cell is macro station, User Equipment) to macro station initiating random access procedure time, because the path loss between the up link of UE to macro station of macro station service and the up link to micro-station has difference, macro station cannot detect the signal that this UE sends, and the signal power that now this UE sends has produced serious bursty interference to the transmitting uplink data at micro-station, and, because this UE is outside the coverage at micro-station, interference indication information cannot be sent by eating dishes without rice or wine, and postpone excessive by the interference indication information that lub interface transmits, the bursty interference of this UE to micro-station can not be reduced in time, cause micro-station reliably can not receive the upstream data of the UE of micro-station service.

Summary of the invention

Embodiments of the invention provide a kind of method, apparatus and system of interference coordination, the bursty interference that the UE that can reduce macro station service brings micro-station, ensure that micro-station reliably can receive the upstream data of the UE of micro-station service.

For achieving the above object, embodiments of the invention adopt following technical scheme:

First aspect, the invention provides a kind of method of interference coordination, comprising:

Subscriber equipment the one UE of micro-station detection macro station service sends the situation of information in the random access procedure, obtains testing result; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

Determine to disturb early warning information according to described testing result; Described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station;

Described interference early warning information is sent to the 2nd UE of described micro-station service, control the transmission of the upstream data to described micro-station for described 2nd UE.

In the implementation that the first is possible, according to first aspect, the situation that subscriber equipment the one UE that described detection macro station is served sends information in the random access procedure comprises: the UE detecting macro station service sends the situation of leading part in the random access procedure;

Described according to described testing result determine interference early warning information comprise:

The power that the UE that described macro station is served if detect sends leading part is greater than pre-determined threshold; then determine that interference early warning information is used to indicate interference described in current time and exists; or, be used to indicate described interference in one section of Preset Time after current time and do not exist;

And/or,

If detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt.

In the implementation that the second is possible, according to first aspect, the situation that subscriber equipment the one UE that described detection macro station is served sends information in the random access procedure comprises: the UE detecting macro station service sends the situation of message part in the random access procedure;

If detect, the UE that described macro station is served sends message part, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist;

And/or,

At the end of the UE that described macro station is served if detect sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

Second aspect, the invention provides a kind of method of interference coordination, comprising:

The user equipment (UE) of micro-station service receives the interference early warning information of described micro-station transmission, and other UE that described interference early warning information is used to indicate macro station service form interference to the uplink communication at described micro-station; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

The transmission of the upstream data to described micro-station is controlled according to described interference early warning information.

In the implementation that the first is possible, according to second aspect, the described transmission controlling the upstream data at extremely described micro-station according to described interference early warning information comprises:

Exist if described interference early warning information is used to indicate interference described in current time, then control the transmission of the upstream data not proceeding to described micro-station;

And/or,

If described interference early warning information is used to indicate described end of interrupt, then control the transmission proceeding to the upstream data at described micro-station;

And/or,

Do not exist if described interference early warning information is used to indicate described interference in one section of Preset Time after current time, then control the transmission proceeding to the upstream data at described micro-station in this section of Preset Time;

And/or,

Exist if described interference early warning information is used to indicate described interference in one section of Preset Time after current time, then control the transmission not proceeding to the upstream data at described micro-station in this section of Preset Time.

The third aspect, the invention provides a kind of micro-station, comprising:

Detecting unit, subscriber equipment the one UE for detecting macro station service sends the situation of information in the random access procedure, obtains testing result; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

Determining unit, the testing result for obtaining according to described detecting unit is determined to disturb early warning information; Described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station;

Transmitting element, the testing result for described determining unit being obtained sends to the 2nd UE of described micro-station service, controls the transmission of the upstream data to described micro-station for described 2nd UE according to described determining unit determined interference early warning information.

In the implementation that the first is possible, according to the third aspect, described detecting unit, the UE for detecting macro station service sends the situation of leading part in the random access procedure; Described determining unit, if for detecting that the power of the UE transmission leading part that described macro station is served is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and do not exist; And/or, if for detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt.

In the implementation that the second is possible, according to the third aspect, described detecting unit, the UE for detecting macro station service sends the situation of message part in the random access procedure; Described determining unit, if for detecting that the UE that described macro station is served sends message part, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist; And/or, if at the end of detecting that a UE that described macro station serves sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

Fourth aspect, the invention provides a kind of UE of micro-station service, comprising:

Receiving element, for receiving the interference early warning information that micro-station sends, other UE that described interference early warning information is used to indicate macro station service form interference to the uplink communication at described micro-station; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

Control unit, the interference early warning information for receiving according to described receiving element controls the transmission of the upstream data to described micro-station.

In the implementation that the first is possible, according to fourth aspect, described transmission unit, if be used to indicate interference existence described in current time for the interference early warning information of described receiving element reception, then controls the transmission of the upstream data not proceeding to described micro-station;

And/or, if the interference early warning information that described receiving element receives is used to indicate described end of interrupt, then control the transmission proceeding to the upstream data at described micro-station;

And/or, if described interference does not exist in the interference early warning information that described receiving element receives is used to indicate after current time one section of Preset Time, then control the transmission proceeding to the upstream data at described micro-station in this section of Preset Time;

And/or, if described interference existence in the interference early warning information that described receiving element receives is used to indicate after current time one section of Preset Time, then control the transmission not proceeding to the upstream data at described micro-station in this section of Preset Time.

5th aspect, the invention provides a kind of system of interference coordination, comprising: the UE of the micro-station described in the above-mentioned third aspect and the micro-station service described in above-mentioned fourth aspect.

The method, apparatus and system of a kind of interference coordination that the embodiment of the present invention provides, the situation of information is sent in the random access procedure by the UE of micro-station detection macro station service, determine to disturb early warning information, and send to the UE of micro-station service, so that the bursty interference that the UE reducing macro station service timely brings micro-station; Further, the UE of micro-station service, according to the interference early warning information received, better can control the transmission of upstream data, to ensure that micro-station reliably can receive the upstream data of the UE of micro-station service.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

The method schematic diagram of a kind of interference coordination that Fig. 1 provides for the embodiment of the present invention;

The HetNet schematic diagram of a kind of identical networking that Fig. 2 provides for the embodiment of the present invention;

The UE of a kind of macro station service that Fig. 3 provides for the embodiment of the present invention initiates the schematic diagram of a random access procedure to macro station;

The transmission situation that the UE that Fig. 4 serves for a kind of micro-station detection macro station that the embodiment of the present invention provides is different and corresponding interference early warning instruction schematic diagram;

The transmission situation that the UE that Fig. 5 serves for another kind micro-station detection macro station that the embodiment of the present invention provides is different and corresponding interference early warning instruction schematic diagram;

The structural representation at a kind of micro-station that Fig. 6 provides for the embodiment of the present invention;

The structural representation of the UE of a kind of micro-station service that Fig. 7 provides for the embodiment of the present invention;

The entity apparatus structural representation at a kind of micro-station that Fig. 8 provides for the embodiment of the present invention;

The entity apparatus structural representation of the UE of a kind of micro-station service that Fig. 9 provides for the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

The invention provides a kind of method of interference coordination, as shown in Figure 1, comprising:

Subscriber equipment the one UE of S101, macro station service initiates a random access procedure to macro station.

According to the regulation in existing protocol, when a UE of macro station service initiates a random access procedure, first according to the multi-upstream access time slot selected, condition code and leading transmitting power launch a leading (Preamble, i.e. the present invention's leading part cited below), afterwards, if in the descending access slot that selected multi-upstream access time slot is corresponding, what selected condition code do not detected catches instruction (this catches instruction can be plus or minus), then select new multi-upstream access time slot, new condition code, and increase leading transmitting power according to a fixed step size, resend one new leading, specify according to agreement, when leading retransmission counter equals to be less than zero, no longer continue transmission leading, the Message Transmission of replying will be there is no to medium access control layer (MAC on AICH Acquisition Indication Channel simultaneously, Medium Access Control), and exit physical accidental access procedure, if in the descending access slot that selected multi-upstream access time slot is corresponding, detect that catching of selected condition code is designated as negative, by the Message Transmission that do not receive the confirmation on AICH Acquisition Indication Channel to MAC layer, and exit physical accidental access procedure, if in the descending access slot that selected multi-upstream access time slot is corresponding, detect that catching of selected condition code is just designated as, then send random accessing message (message, i.e. the present invention's message part cited below), the Message Transmission sent by random accessing message to MAC layer, and exits physical accidental access procedure.

Wherein, the duration of each Preamble is 0.53 Transmission Time Interval (TTI, Transmission Timing Interval), the duration of message part is 5 or 10 TTI, minimum interval between leading and leading is 2 or 2.67 TTI, and last is leading is 2 or 2.67 TTI with the time interval of message part; The duration of a TTI can be 2ms, is certainly not limited thereto.

Subscriber equipment the one UE of S102, the service of micro-station detection macro station sends the situation of information in the random access procedure, obtains testing result; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell.

As shown in Figure 2, figure comprises: the subscriber equipment that macro station, micro-station and macro station are served.Wherein, circle 1 represents the scope of macro station Serving cell, and circle 2 represents the scope of Serving cells, micro-station, and enclosing 2, to be positioned at circle 1 inner, and namely the scope of Serving cell, micro-station is less than the scope of macro station Serving cell and is positioned at the scope of described macro station Serving cell; Circle 3 represents that the subscriber equipment of macro station service can produce the regional edge boundary line of uplink interference to micro-station; When the subscriber equipment of macro station service to be within circle 3 and outside circle 2 time, initiate in a random access procedure to macro station, the UE served to the link between macro station and macro station due to the UE of macro station service has difference to the link path loss between micro-station, so the UE of macro station service may produce serious bursty interference to micro-station, all micro-standing-meetings detect that subscriber equipment that macro station is served sends the situation of information in the random access procedure, and obtain testing result.

Concrete, from S101, the information that a UE of macro station service sends in the random access procedure is leading part or message part.

Optionally, this step can be: a UE of micro-station detection current time macro station service sends the situation of leading part in the random access procedure, obtains testing result.

Detailed process comprises: whether the UE detecting the service of current time macro station sends leading part, if in the Preset Time after a UE of macro station service leads before sending, again do not send leading part, then micro-station just can't detect a UE transmission leading part of macro station service, wherein, described Preset Time be transmission twice leading between minimum interval; If a UE of macro station service is apart from micro-station is comparatively near and a UE sends leading part to macro station, then micro-station can detect that the UE that macro station is served sends leading part, and a UE that now can detect macro station service further sends preamble power and whether is greater than predetermined threshold value.

The testing result obtained comprises: micro-station does not detect that the UE that macro station is served sends leading part, or, micro-station detects that the power of the leading part that the UE that macro station is served sends does not reach default threshold value, or micro-station detects that the power of the leading part that the UE that macro station is served sends exceedes default threshold value.

Optionally, this step can be: micro-station detects that a UE that current time macro station is served sends the situation of message part in the random access procedure, obtains testing result.

Detailed process comprises: whether the UE detecting the service of current time macro station sends message part, if a UE of macro station service apart from micro-station a comparatively near and UE lead part before sending after Preset Time in, do not send message part, then micro-station can't detect the part of the UE transmission message of macro station service; If a UE of macro station service is apart from micro-station is comparatively near and a UE sends message part to macro station, then micro-station can detect that the UE that macro station is served sends message part; If the message part that a UE of macro station service sends to macro station terminates, then micro-station can detect that the UE message part that macro station is served sends end.

The testing result obtained comprises: micro-station does not detect that the UE that macro station is served sends message part, or micro-station detects that the UE that macro station is served sends message part; Or micro-station detects that the UE message part that macro station is served sends end.

S103, micro-station send the testing result of the situation of information in the random access procedure according to the UE that macro station is served, determine to disturb early warning information, and described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station.

If when micro-station detects that the power of the UE transmission leading part that described macro station is served is greater than pre-determined threshold, then determine that interference early warning information to be used to indicate described in current time interference and to exist, or be used to indicate described interference in one section of Preset Time after current time and do not exist; And/or, if detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, micro-station does not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt.

Concrete, according to step S101, each leading duration is 0.53 TTI, minimum interval between leading and leading is 2 or 2.67 TTI, then when micro-station detects that the power of the UE transmission leading part that described macro station is served is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists; If a UE of now macro station service sends leading retransmission counter and is greater than zero, it is leading that the UE that then described macro station is served can continue transmission, then after a upper leading transmission, there is not interference signal in time period before next leading transmission, then determine to disturb early warning information be used to indicate current time after one section of Preset Time in described interference do not exist; If it is zero that a UE of macro station service sends leading retransmission counter, then stop transmission leading, so micro-stand in detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, now determine that interference early warning information is used to indicate described end of interrupt.

Example, when a UE of macro station service is to macro station initiating random access procedure, if when micro-station detects that the power of the leading part of the UE that macro station is served is greater than pre-determined threshold, interference early warning information " Clear(removing) " can being produced, not existing for representing in a period of time after current time to disturb; Also interference early warning information " alarm(warning) " can be produced, for representing current time interference existence.

When a UE of macro station service is to macro station initiating random access procedure, if detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, micro-station does not detect the leading part that the UE that described macro station is served sends, then produce interference early warning information " Alarm revoked(warns releasing) ", for representing end of interrupt.

If micro-station detects the part of the UE transmission message that macro station is served, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist; And/or, at the end of the UE that described macro station is served if detect sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

Concrete, if micro-station detects the part of the UE transmission message that macro station is served, then determine that interference early warning information is used to indicate interference described in current time and exists; According to step S101, the duration of the one UE transmission message part of described macro station service is 5 or 10 TTI, then detect from micro-station that the part of the UE transmission message that macro station is served sends in a period of time before terminating to message, the UE that capital is subject to macro station service sends the interference of message part, so described interference existence in the one section of Preset Time determining to disturb early warning information to be used to indicate after current time; If micro-station then determines that interference early warning information is used to indicate described end of interrupt at the end of the UE transmission message part that described macro station is served being detected.

Example, when a UE of macro station service is to macro station initiating random access procedure, if when micro-station detects the message part of the UE that macro station is served, interference early warning information " alarm " can be produced, represent the current impact being subject to bursty interference, namely current time interference exists, or, represent that in a period of time after current time, interference exists.

When a UE of macro station service is to macro station initiating random access procedure, if at the end of micro-station detects the UE transmission message part that described macro station is served, produce interference early warning information " Alarm revoked ", represent a UE message part end of transmission of macro station service, bursty interference situation is removed, i.e. end of interrupt.

Described interference early warning information is sent to the 2nd UE of described micro-station service by S104, micro-station; Correspondingly, the 2nd UE of micro-station service receives the interference early warning information that micro-station sends.

Optionally, micro-station can adopt the form of broadcast, interference early warning information is sent to the UE of described micro-station service.

Example, micro-station can adopt the form of broadcast, early warning information " Clear " will be disturbed, " alarm " and " Alarm revoked " send to described micro-station service the 2nd UE.Correspondingly, the 2nd UE of micro-station service receives interference early warning information " Clear ", " alarm " and " Alarm revoked " of micro-station transmission.

2nd UE of S105, the service of micro-station controls the transmission of the upstream data to described micro-station according to described interference early warning information.

Optionally, exist if the interference early warning information that the 2nd UE of micro-station service receives is used to indicate interference described in current time, then control the transmission of the upstream data not proceeding to described micro-station.

In this case, whether the 2nd UE no matter micro-station is served exists upstream data, all can not carry out the transmission of upstream data to micro-station.

Optionally, if the interference early warning information that the 2nd UE of micro-station service receives is used to indicate described end of interrupt, then the transmission proceeding to the upstream data at described micro-station is controlled.

In this case, mean that the 2nd UE of micro-station service can carry out the transmission of upstream data.If the 2nd UE of now micro-station service exists upstream data, then send described upstream data to micro-station, if the 2nd UE of now micro-station service does not exist upstream data, nature is without the need to sending.

Optionally, if described interference does not exist in the interference early warning information that receives of the 2nd UE of micro-station service is used to indicate after current time one section of Preset Time, then the transmission of the upstream data proceeding to described micro-station within this period of time is controlled.

In this case, mean that the 2nd UE of micro-station service can carry out the transmission of upstream data in a period of time after current time.If the 2nd UE of now micro-station service exists upstream data, then send described upstream data to micro-station, if the 2nd UE of now micro-station service does not exist upstream data, nature is without the need to sending.

Optionally, if described interference existence in the interference early warning information that receives of the 2nd UE of micro-station service is used to indicate after current time one section of Preset Time, then the transmission of the upstream data not proceeding to described micro-station within this period of time is controlled.

In this case, the transmission can not carrying out upstream data in the 2nd UE a period of time after current time that micro-station is served is meaned.Whether the 2nd UE that now no matter micro-station is served exists upstream data, all can not carry out upstream data transmission to micro-station.

Example, if the 2nd UE of micro-station service receives the interference early warning information " Clear " that micro-station sends, then the 2nd UE of micro-station service can carry out the transmission of upstream data within following a period of time; If the 2nd UE of micro-station service receives the interference early warning information " alarm " that micro-station sends, then the 2nd UE of micro-station service does not carry out the transmission of upstream data at current time, or represents the transmission not carrying out upstream data in follow-up a period of time; If the 2nd UE of micro-station service receives the interference early warning information " Alarm revoked " that micro-station sends, then the 2nd UE of micro-station service can carry out the transmission of upstream data.

, present invention also offers instantiation below, the method for above-mentioned interference coordination is described in detail, in each instantiation, for the HetNet of identical networking.

As shown in Figure 2, when the UE of macro station service to be within circle 3 and outside circle 2 time, and initiate in a random access procedure to macro station, UE serve to the link between macro station and macro station due to the UE of macro station service has difference to the link path loss between micro-station, so the UE that macro station is served may produce serious bursty interference to the uplink communication at micro-station.

According to agreement regulation, when the random access procedure that the UE of macro station service initiates, the timing parameters setting transmitted between channel in this random process is as shown in table 1.

Table 1

Wherein, in Table 1, AICH transmit timing parameter is for representing AICH Acquisition Indication Channel (AICH, Acquisition Indicator Channel) in transmit timing, this parameter is by medium access control layer (MAC, Medium Access Control) layer provided by the mode of signaling, is generally set to 0 or 1; t _{p-p, min}represent leading and leading between minimum time interval, t _p-mrepresent the time interval between last leading and message, and leading and leading between time interval t _p-pt should be more than or equal to _{p-p, min}.

Meanwhile, each Preamble continues 0.53 TTI, and message part corresponding 10ms or 20ms, i.e. 5 or 10 TTI, the length of message part is generally determined by network side, can comprise in the broadcast of network.T in Table 1 _{p-p, min}corresponding different AICH transmit timing parameters, t _{p-p, min}equal 3 or 4 access slots (access slots), i.e. t _{p-p, min}equal 2 or 2.67 TTI durations.T in Table 1 _p-mcorresponding different AICH transmit timing parameters, t _p-mequal 3 or 4 access slots (access slots), i.e. t _p-mbe 2 or 2.67 TTI durations.When micro-station can detect the message part of the UE that macro station is served, can confirm that a RACH process of the UE that macro station is served terminates.

When the UE of macro station service initiates a random access procedure to macro station, random access procedure is completed by transmission leading part and/or message part, that is, the UE of macro station service is when the random access procedure of initiating, be successfully send message part after the some Preamble of transmission, or terminate after being the some Preamble of transmission.

The UE of macro station service initiates a random access procedure to macro station and specifically comprises the following steps:

A1, according to given access service rank (ASC, Access Service Class), from available groups of subchannels, select a Random Access Channel (RACH, Random Access Channel) groups of subchannels randomly.

Described access service rank is the service class according to specifying in 3GPP TS25.331 agreement, is followed successively by 0,1,2 according to the priority ..., 7 totally 8 ranks.

A2, in ensuing two frames, obtain available access slot, this two frame is designated as SFN(System Frame Number respectively, System Frame Number in selected RACH groups of subchannels) and SFN+1.If there is available access slot in SFN, then therefrom select a multi-upstream access time slot randomly; If there is no available access slot in SFN, so Stochastic choice one from the available random access slot SFN+1.To given ASC Stochastic choice condition code from available condition code.

A3, preamble retransmission counter is set.

A4, preamble transmission initial power (namely illustrating the leading initial power in 3) is set.

A5, use multi-upstream access time slot, condition code and the leading transmitting power selected send one leading.

If the UE of A6 macro station service is in the descending access slot that selected multi-upstream access time slot is corresponding, do not detect selected condition code positive or negative when catching instruction (AI, Acquisition Indication), perform following step:

(1) in selected groups of subchannels, select a new multi-upstream access time slot as the available access slot of the next one, the same A1 of selection course;

(2) in given ASC, from available condition code, select the condition code that new randomly;

(3) transmitting power of leading part is increased with the step-length set (power namely illustrated in 3 increases step-length);

(4) preamble retransmission counter subtracts 1;

(5) if preamble retransmission counter is greater than 0, A6 is repeated.Otherwise the Message Transmission that will " do not have to reply on AICH " to MAC layer, and exits physical accidental access procedure; That is, as shown in Fig. 3 (A), the UE of macro station service is in the some leading rear terminations of transmission, and message sends unsuccessfully.

If the UE of A7 macro station service is in the descending access slot that selected multi-upstream access time slot is corresponding, what selected condition code detected catches when being designated as negative, the Message Transmission that will " receive on AICH and not confirm (Nack; Negative Acknowledgement) " to MAC layer, and exits physical accidental access procedure.

If the UE of A8 macro station service is in the descending access slot that selected multi-upstream access time slot is corresponding, detect that selected condition code is caught and be designated as timing, according to the transmit timing parameter in AICH, the UE of macro station service launches random message on the 3rd that launches after leading multi-upstream access time slot last time or the 4th uplink access slot, and by the Message Transmission of " RACH message sends " to MAC layer, exit physical accidental access procedure, that is, as shown in Fig. 3 (B), the UE of macro station service leadingly successfully sends message afterwards transmission is some.

Embodiment one:

Due to the UE that serves in above-mentioned macro station in the random access procedure, interference may be produced to the uplink communication at micro-station.Therefore, the feature of the UE initiating random access procedure that the embodiment of the present invention is served according to the HetNet of above-mentioned identical networking and macro station, provides a kind of method of interference coordination.

In embodiments of the present invention, setting AICH transmit timing parameter is 0, then t _{p-p, min}be 2 TTI durations, t _p-mbe 2 TTI durations, and leading and leading between time interval t _p-palso be 2 TTI durations, the length t of message part _messagebe 5 TTI durations, as shown in Figure 4.

When the UE of macro station service is to macro station initiating random access procedure, the situation of the UE transmission information of macro station service is detected at micro-station simultaneously.Because the UE of macro station service completes a random access procedure by transmission leading part and message part, so micro-station is according to detecting that the leading part that the UE that macro station is served sends and message part determine different interference early warning information.Specifically comprise the following steps:

The UE of B1, the service of micro-station detection macro station sends the situation of leading part in the random access procedure.

The UE served according to above-mentioned macro station initiates the concrete steps of a random access procedure, and first micro-station detects that UE that macro station is served sends the situation of leading part.

When the UE of macro station service performs steps A 5, micro-station detects that the UE that macro station is served sends leading power.But, in the ordinary course of things, the leading Initial Trans that the UE of macro station service is arranged is all very little, now, although micro-station can detect the pilot power that the UE that macro station serves sends, within the scope of the interference-tolerant that this pilot power can bear at micro-station, therefore can not have an impact to the transmitting uplink data of the UE of micro-station service, now early warning information is disturbed without the need to determining in micro-station, does not also just need the broadcast carrying out disturbing early warning information.

When the UE of macro station service performs steps A 6, i.e. the UE of macro station service carries out in the process of preamble retransmission, and micro-station detects the leading part that the UE that macro station is served sends and power thereof.Micro-station, according to the leading part of the UE transmission of the macro station service detected and power thereof, is determined to disturb early warning information.

Concrete, if when micro-station detects that the preamble power that the UE that macro station is served sends reaches certain thresholding, that is, this pilot power exceedes the interference-tolerant scope that micro-station can bear, then determine interference early warning information " clear ", represent that the following T1 time may can not be subject to the impact of bursty interference, simultaneously, this interference early warning information " clear " is broadcast to the UE of micro-station service, now, the UE of micro-station service can carry out the transmission of upstream data within this T1 time period according to the implication that interference early warning information represents.Wherein, according to agreement regulation, the described T1 time can equal t _p-p-4096chip, as the time period part in Fig. 4 indicated by T1, due in the embodiment of the present invention, send leading and leading between time interval and leading equal with the time interval between message, so the T1 time also can equal t _p-m-4096chip, i.e. t _p-p-4096chip.

UE according to macro station service sends success and failure in the some leading rear message of transmission, is specifically divided into two kinds of situations:

The first situation, when macro station service UE transmission some leading after termination, message sends unsuccessfully, as as shown in Fig. 4 (A), that is, micro-ly stand in when performing the process of step B1, in Preset Time after the UE of macro station service leads before sending, do not detect that the Preamble that the UE that macro station is served sends occurs again, then determine to disturb early warning information, represent that the RACH process of the UE of macro station service terminates, prominent disturbed condition is removed, simultaneously, this interference early warning information " Alarm revoked " is broadcast to the UE of micro-station service, now, the UE of micro-station service can carry out the transmission of upstream data according to the implication that interference early warning information represents.As the moment in Fig. 4 (A) indicated by warning elimination, after this moment, the UE of micro-station service can carry out the transmission of upstream data.

The second situation, when macro station service UE transmission some leading after successfully send message, as as shown in Fig. 4 (B), that is, micro-ly stand in when performing the process of step B1, in Preset Time after the UE of macro station service leads before sending, the part of the UE transmission message that macro station is served detected, then determine to disturb early warning information.As shown in Fig. 4 (B), the embodiment of the present invention can also comprise:

If when the micro-station of B2 detects the message part of the UE transmission that macro station is served, determine interference early warning information " alarm ", represent that the UE of micro-station service can be subject to the impact of the UE message part bursty interference of macro station service in the following T2 time, simultaneously, this interference early warning information " alarm " is broadcast to the UE of micro-station service, now, the UE of micro-station service can avoid carrying out the transmission of upstream data within this T2 time period according to the implication that interference early warning information represents.Wherein, according to agreement regulation, the described T2 time can equal t _message-4096chip, as the time period part indicated by T2 in Fig. 4 (B).

If B3 is micro-stand in the message part detecting that the UE that macro station is served sends at the end of, determine interference early warning information " Alarm revoked ", represent that the message transmitting procedure of the UE of macro station service terminates, prominent disturbed condition is removed, simultaneously, this interference early warning information " Alarm revoked " is broadcast to the UE of micro-station service, and now, the UE of micro-station service can carry out the transmission of upstream data according to the implication that interference early warning information represents.As the moment in Fig. 4 (B) indicated by warning elimination, after this moment, the UE of micro-station service can carry out the transmission of upstream data.

The method of a kind of interference coordination that the embodiment of the present invention provides, the situation of information is sent in the random access procedure by the UE of micro-station detection macro station service, determine to disturb early warning information, and send to the UE of micro-station service, so that the bursty interference that the UE reducing macro station service timely brings micro-station; Further, the UE of micro-station service, according to the interference early warning information received, better can control the transmission of upstream data, to ensure that micro-station reliably can receive the upstream data of the UE of micro-station service.

Embodiment two:

Below, the feature of the UE initiating random access procedure that the embodiment of the present invention is served according to the HetNet of above-mentioned identical networking and macro station, provides the method for another interference coordination.

In the present embodiment, adopt the AICH transmit timing parameter identical with in embodiment one, the information state that the UE that macro station service is detected at micro-station sends is also identical, does not add repeat at this.Its difference is, micro-station is according to when the leading part that the UE that macro station is served sends and message part being detected, and the interference early warning information determined is different, and its implication represented is also different.As shown in Figure 5, the present embodiment specifically comprises the following steps:

The UE of C1, the service of micro-station detection macro station sends the situation of leading part in the random access procedure.

Concrete, if when micro-station detects that the preamble power that the UE that macro station is served sends reaches certain thresholding, determine interference early warning information " alarm ", represent that current micro-station is subject to the bursty interference of the UE of macro station service, simultaneously, this interference early warning information " alarm " of broadcast is broadcast to the UE of micro-station service, now, the UE of micro-station service can avoid carrying out the transmission of upstream data according to the implication that interference early warning information represents.As shown in Fig. 5 (A), when micro-station broadcast interference early warning information " alarm ", the UE of micro-station service can not carry out the transmission of upstream data.

The first situation, when macro station service UE transmission some leading after termination, message sends unsuccessfully, as as shown in Fig. 5 (A), that is, micro-when standing in the process performing time step C1, in Preset Time after the UE of macro station service leads before sending, do not detect that the Preamble of the transmission that macro station is served occurs again, then determine interference early warning information " Alarm revoked ", represent that the RACH process of the UE of macro station service terminates, prominent disturbed condition is removed, simultaneously, this interference early warning information " Alarm revoked " is broadcast to the UE of micro-station service, now, the UE of micro-station service can carry out the transmission of upstream data according to the implication that interference early warning information represents.As shown in Fig. 5 (A), when micro-station broadcast interference early warning information " Alarm revoked ", the UE of micro-station service can carry out the transmission of upstream data after this moment.

The second situation, when macro station service UE transmission some leading after successfully send message, as as shown in Fig. 5 (B), that is, micro-when standing in the process performing time step C1, in Preset Time after the UE of macro station service leads before sending, the part of the UE transmission message that macro station is served detected, determine to disturb early warning information.As shown in Figure 5 (B), the embodiment of the present invention can also comprise:

If when the micro-station of C2 detects the message part of the UE transmission that macro station is served, determine interference early warning information " alarm ", represent the current impact being subject to the UE message part bursty interference of macro station service of the UE of micro-station service, simultaneously, this interference early warning information " alarm " is broadcast to the UE of micro-station service, now, the UE of micro-station service can avoid carrying out the transmission of upstream data according to the implication that interference early warning information represents.As shown in Fig. 5 (B), when micro-station broadcast interference early warning information " alarm ", the UE of micro-station service can not carry out the transmission of upstream data.

If C3 is micro-stand in the message part detecting that the UE that macro station is served sends at the end of, determine interference early warning information " Alarm revoked ", represent that the message transmitting procedure of the UE of macro station service terminates, prominent disturbed condition is removed, simultaneously, this interference early warning information " Alarm revoked " is broadcast to the UE of micro-station service, and now, the UE of micro-station service can carry out the transmission of upstream data according to the implication that interference early warning information represents.As shown in Fig. 5 (B), when micro-station broadcast interference early warning information " Alarm revoked ", the UE of micro-station service can carry out the transmission of upstream data after this moment.

The embodiment of the present invention additionally provides a kind of micro-station 60, and each functional module in this equipment is corresponding with the step in said method, is not described in detail at this.

As shown in Figure 6, described micro-station 60 comprises:

Detecting unit 601, subscriber equipment the one UE for detecting macro station service sends the situation of information in the random access procedure, obtains testing result; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

Determining unit 602, the testing result for obtaining according to described detecting unit 601 is determined to disturb early warning information, and described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station;

Transmitting element 603, the 2nd UE that the determination result for described determining unit 602 being obtained sends to described micro-station 60 to serve, controls the transmission of the upstream data to described micro-station for described 2nd UE.

Further, described detecting unit 601, the UE for detecting macro station service sends the situation of leading part in the random access procedure;

Described determining unit 602, if for detecting that the power of the UE transmission leading part that described macro station is served is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and do not exist; And/or, if for detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt.

Further, described detecting unit 601, the UE for detecting macro station service sends the situation of message part in the random access procedure;

Described determining unit 602, if for detecting that the UE that described macro station is served sends message part, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist; And/or, if at the end of detecting that a UE that described macro station serves sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

The equipment of a kind of interference coordination that the embodiment of the present invention provides, the situation of information is sent in the random access procedure by the UE of detecting unit detection macro station service, determine to disturb early warning information, and send to the UE of described micro-station service, so that the bursty interference that the UE reducing macro station service timely brings.

The embodiment of the present invention additionally provides a kind of UE70 of micro-station service, and each functional module in this equipment is corresponding with the step in said method, is not described in detail at this.

As shown in Figure 7, the UE70 of described micro-station service comprises:

Receiving element 701, for receiving the interference early warning information that micro-station 60 sends; Other UE that described interference early warning information is used to indicate macro station service form interference to the uplink communication at described micro-station; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

Control unit 702, the interference early warning information for receiving according to described receiving element 701 controls the transmission of the upstream data to described micro-station.

Further, described control unit 702, if be used to indicate interference existence described in current time for the interference early warning information of described receiving element 701 reception, then controls the transmission of the upstream data not proceeding to described micro-station;

And/or, if the interference early warning information that described receiving element 701 receives is used to indicate described end of interrupt, then control the transmission proceeding to the upstream data at described micro-station;

And/or, if described interference does not exist in the interference early warning information that described receiving element 701 receives is used to indicate after current time one section of Preset Time, then control the transmission proceeding to the upstream data at described micro-station in this section of Preset Time;

And/or, if described interference existence in the interference early warning information that described receiving element 701 receives is used to indicate after current time one section of Preset Time, then control the transmission not proceeding to the upstream data at described micro-station in this section of Preset Time.

The UE of a kind of micro-station service that the embodiment of the present invention provides, according to the interference early warning information that receiving element receives, so that the UE of micro-station service can control the transmission of upstream data better, ensures that micro-station reliably can receive the upstream data of described equipment.

The embodiment of the present invention additionally provides a kind of system of interference coordination, and described system comprises: the UE70 of the micro-station service shown in the micro-station 60 shown in above-mentioned Fig. 6 and above-mentioned Fig. 7.

As shown in Figure 8, the invention provides a kind of micro-station 80, comprising: processor 801 and transmitter 802.

Wherein, described processor 801 sends the situation of information in the random access procedure for subscriber equipment the one UE detecting macro station service, obtains testing result; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell; And determine to disturb early warning information according to described testing result, described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station.

Described transmitter 802, for described interference early warning information being sent to the 2nd UE of described micro-station service, controls the transmission of the upstream data to described micro-station for described 2nd UE.

Optionally, described processor 801 sends the situation of leading part in the random access procedure specifically for the UE detecting macro station service; The power that the UE that described macro station is served if detect sends leading part is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and do not exist; And/or, if detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt.

Optionally, described processor 801 sends the situation of message part in the random access procedure specifically for the UE detecting macro station service; If detect, the UE that described macro station is served sends message part, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist; And/or, at the end of the UE that described macro station is served if detect sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

As shown in Figure 9, the invention provides a kind of UE90 of micro-station service, comprising: receiver 901 and processor 902.

Wherein, the interference early warning information that described receiver 901 sends for receiving micro-station, other UE that described interference early warning information is used to indicate macro station service form interference to the uplink communication at described micro-station; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell.

Described processor 902 is for controlling the transmission of the upstream data to described micro-station according to described interference early warning information.

Optionally, exist if described processor 902 is used to indicate interference described in current time specifically for described interference early warning information, then control the transmission of the upstream data not proceeding to described micro-station; And/or, if described interference early warning information is used to indicate described end of interrupt, then control the transmission proceeding to the upstream data at described micro-station; And/or, if described interference does not exist in described interference early warning information is used to indicate after current time one section of Preset Time, then control the transmission of the upstream data proceeding to described micro-station within this period of time; And/or, if described interference exists in described interference early warning information is used to indicate after current time one section of Preset Time, then control the transmission of the upstream data not proceeding to described micro-station within this period of time.

The device of a kind of interference coordination that the embodiment of the present invention provides, the situation of information is sent in the random access procedure by the UE of micro-station detection macro station service, determine to disturb early warning information, and send to the UE of micro-station service, so that the bursty interference that the UE reducing macro station service timely brings micro-station; Further, the UE of micro-station service, according to the interference early warning information received, better can control the transmission of upstream data, to ensure that micro-station reliably can receive the upstream data of the UE of micro-station service.

In several embodiments that the application provides, should be understood that, disclosed system, apparatus and method, can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit comprises, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.

The above-mentioned integrated unit realized with the form of SFU software functional unit, can be stored in a computer read/write memory medium.Above-mentioned SFU software functional unit is stored in a storage medium, comprises the part steps of some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (Read-Only Memory, be called for short ROM), random access memory (Random Access Memory, be called for short RAM), magnetic disc or CD etc. various can be program code stored medium.

Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims

1. a method for interference coordination, is characterized in that, comprising:

Determine to disturb early warning information according to described testing result, described interference early warning information is used to indicate a described UE and forms interference to the uplink communication at described micro-station;

2. the method for a kind of interference coordination according to claim 1, is characterized in that:

The situation that the UE that described detection macro station is served sends information in the random access procedure comprises:

The UE detecting macro station service sends the situation of leading part in the random access procedure;

The power that the UE that described macro station is served if detect sends leading part is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and do not exist;

And/or,

3. the method for a kind of interference coordination according to claim 1, is characterized in that:

The situation that subscriber equipment the one UE that described detection macro station is served sends information in the random access procedure comprises:

The UE detecting macro station service sends the situation of message part in the random access procedure;

And/or,

4. a method for interference coordination, is characterized in that, comprising:

5. the method for a kind of interference coordination according to claim 4, is characterized in that,

The described transmission controlling the upstream data at extremely described micro-station according to described interference early warning information comprises:

And/or,

Exist if described interference early warning information is used to indicate interference in one section of Preset Time after current time, then control the transmission not proceeding to the upstream data at described micro-station in this section of Preset Time.

6. a micro-station, is characterized in that, comprising:

Transmitting element, the interference early warning information for described determining unit being obtained sends to the 2nd UE of described micro-station service, controls the transmission of the upstream data to described micro-station for described 2nd UE.

7. micro-station according to claim 6, is characterized in that,

Described detecting unit, the UE for detecting macro station service sends the situation of leading part in the random access procedure;

Described determining unit, if for detect power that a UE that described macro station serves sends leading part be greater than pre-determined threshold after Preset Time in, do not detect that the UE that described macro station is served sends leading part, then determine that interference early warning information is used to indicate described end of interrupt; And/or, if for detecting that the power of the UE transmission leading part that described macro station is served is greater than pre-determined threshold, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and do not exist.

8. micro-station according to claim 6, is characterized in that,

Described detecting unit, the UE for detecting macro station service sends the situation of message part in the random access procedure;

Described determining unit, if for detecting that the UE that described macro station is served sends message part, then determine that interference early warning information is used to indicate interference described in current time and exists, or, be used to indicate described interference in one section of Preset Time after current time and exist; And/or, if at the end of detecting that a UE that described macro station serves sends message part, then determine that interference early warning information is used to indicate described end of interrupt.

9. a UE for micro-station service, is characterized in that, comprising:

Receiving element, for receiving the interference early warning information that micro-station sends; Other UE that described interference early warning information is used to indicate macro station service form interference to the uplink communication at described micro-station; The scope of Serving cell, described micro-station is less than the scope of described macro station Serving cell and is positioned at the scope of described macro station Serving cell;

10. the UE of micro-station service according to claim 9, is characterized in that,

Described control unit, if be used to indicate interference existence described in current time for the interference early warning information of described receiving element reception, then controls the transmission of the upstream data not proceeding to described micro-station;

And/or, if the interference early warning information that described receiving element receives is used to indicate described end of interrupt, then proceed to the transmission of the upstream data at described micro-station;

And/or, if described interference does not exist in the interference early warning information that described receiving element receives is used to indicate after current time one section of Preset Time, then control the transmission that can proceed to the upstream data at described micro-station in this section of Preset Time;

And/or if described interference exists in the interference early warning information that described receiving element receives is used to indicate after current time one section of Preset Time, then the UE controlling to serve at micro-station does not proceed to the transmission of the upstream data at described micro-station in this section of Preset Time.

The system of 11. 1 kinds of interference coordinations, is characterized in that, comprising: the UE of the micro-station described in any one of claim 6-8 and the micro-station service described in any one of claim 9-10.