CN103327550A - Cell selection method, terminal, relay node and system in relay system - Google Patents
Cell selection method, terminal, relay node and system in relay system Download PDFInfo
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- CN103327550A CN103327550A CN2012100748954A CN201210074895A CN103327550A CN 103327550 A CN103327550 A CN 103327550A CN 2012100748954 A CN2012100748954 A CN 2012100748954A CN 201210074895 A CN201210074895 A CN 201210074895A CN 103327550 A CN103327550 A CN 103327550A
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Abstract
The invention provides a cell selection method in a relay system, a terminal in the relay system, a relay node in the relay system and a system in the relay system. The selection method is characterized in that in the relay system, when a terminal conducts cell selection, the channel quality of a relay passing-back link is combined to assist in selecting a cell, therefore, in comparison with the existing technology where cell selection is conducted only according to the channel quality of a switched-in link and the channel quality of a directly connected link, the cell selection scheme is optimized, performance of the terminal is improved, and the problem that the performance of the terminal is poor due to the poor condition of the passing-back link when cell selection is conducted according to the channel quality of the switched-in link and the channel quality of the directly connected link is solved.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to the system of selection of a kind of relay system small area, terminal, via node and system.
Background technology
In order to tackle the wireless propagation environment of various complexity, solve following Long Term Evolution (LTE, Long Term Evolution) covering problem of network design, third generation partner program (3GPP, 3rd Generation Partnership Project) Long Term Evolution (LTE-A that is strengthening, Long Term Evolution-Advanced) in the R10 release protocol via node (RN, Relay Node) (can referred to as relaying) has been carried out standardization.By between macro base station (eNB) and user terminal (RUE), adding a via node, the link that direct transfers between macro base station and the terminal is divided into two sections, as shown in fig. 1, Radio Link between macro base station and the relaying is called return link (backhaul link, the Un interface), Radio Link between relaying and the terminal is called access link (access link, Uu interface).By via node is reasonably disposed, two sections links after the fractionation can both have the propagation distance shorter than the link that direct transfers, shelter in the round also can reduce simultaneously, so that two sections links after splitting all have the transmittability than the better radio propagation conditions of the link that direct transfers and Geng Gao.
The main feature of RN comprises:
(1), provides wireless backhaul.Some optical fiber can't arrive or wired passback construction relatively the scene of difficulty (such as: without the chamber divide the indoor office environments of deployment, residential building that optical fiber can't arrive the family, without the little covering scene in the city of wired passback, remote suburb or rural area etc.), the relaying that has the wireless backhaul function by introducing can effectively be expanded covering, solve the deficient problem of fiber resource, dispose flexible.
(2), solve coverage enhancement.In the LTE-A R10 stage, at present, relaying mainly still is used for solving coverage enhancement but not capacity promotes, and can eliminate the shade overlay area that the pile group produces by the introducing relay station, or even the dead band, has promoted the covering power of base station.
The type of relaying can be divided into relaying (Inband Relay) and band outer relaying (Outband Relay) in the band.Return link (macro base station with relaying between) and the access link (between relaying and the terminal) of relaying transmits time division multiplexing in the band in identical band resource; Return link (macro base station from relaying between) and the access link (between relaying and the terminal) of the outer relaying of band transmit frequency division multiplexing in different frequency bands.Therefore relay transmission is compared the direct-connected transmission means of macro base station and has been consumed more running time-frequency resource.
In the LTE-A system, what mainly consider is 1 type relaying (Type-1RN), and 1 type relaying has oneself independently cell ID (Cell ID), is equivalent to an independently residential quarter, can carry out the processing of layer 3.
In the relay system that 1 type relaying forms, RUE selects (cell selection) by the residential quarter, such as comparing from host base station (DeNB, Donor eNB) and the Reference Signal Received Power (RSRP of RN, Reference Signal Receiving Power) (perhaps Reference Signal Received Quality (RSRQ, Reference Signal Receiving Quality)), selection is access DeNB or RN.For RUE, when carrying out the residential quarter selection, DeNB and RN are equivalent.
In LTE-A heterogeneous network (HetNet) scene, little station (Pico-cell) is in order to receive more user, can be at residential quarter selectance value, residential quarter selectance value can be amount of bias (bias of configuration among the RSRP (or RSRQ) of access link, and bias＞0), for terminal, select the metric of this Pico to become RSRP (or RSRQ) and bias sum, thereby increased the probability that terminal is connected to this Pico, namely be equivalent to increase the coverage of Pico, expansion (RE, Range Extension) is selected and covered in residential quarter under Here it is the HetNet.
But RN is different from Pico, and the return link of Pico is optical fiber, so its capacity can think not limited.But what the return link of RN took is the idle wireless resource of DeNB, and capacity is limited.If the return link channel of RN is bad, and RN this moment still in the residential quarter selectance value of determining according to the access link situation configuration amount of bias cover expansion and absorb more terminal, then handling up of return link then can have a strong impact on the performance of RUE.Such as in Fig. 2, suppose that the channel quality of the access link of RUE1～RUE3 is better than the access link of RUE4～RUE6, but because the channel quality of the return link of RN1 is worse than the return link of RN2, therefore, the performance of RUE1～RUE3 is worse than the performance of RUE4～RUE6.
And as shown in Figure 3, if it is RSRQ1 that RUE1 directly links the channel quality of DeNB, the channel quality of the return link of RN1 is RSRQ0, and the channel quality that RUE1 is connected to the access link of RN1 is RSRQ2, if RSRQ0＜RSRQ1＜RSRQ2, then according to existing scheme, because RSRQ1＜RSRQ2, then RUE1 can select to access RN1, but this moment is because RSRQ0＜RSRQ1 in fact, so the RUE1 poor-performing, and if RUE1 selects direct access DeNB can obtain better performance.
In sum, in the selection scheme of the residential quarter of existing relay system, RUE only considers access link situation between RUE and the relaying and the direct connected link situation between RUE and the base station when selecting relaying or base station.And in fact may have such scene: namely, access link situation between RUE and certain relaying is better, but the return link situation between this relaying and the base station is relatively poor, if RUE can cause because the return link situation is relatively poor the poor-performing of this RUE so because the access link situation is better selected this relaying of access.
Summary of the invention
The embodiment of the invention provides the system of selection of a kind of relay system small area, terminal, via node and system, is used for optimizing the residential quarter selection scheme, improves the performance of the terminal of relay system service.
The system of selection of a kind of relay system small area, described method comprises:
End-on incoming link and direct connected link are measured, and determine access link channel quality and direct connected link channel quality, and determine the return link channel quality according to the information that the via node that receives sends;
Terminal is carried out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and is selected.
The system of selection of a kind of relay system small area, described method comprises:
Via node is determined bias according to the return link channel quality, and this bias is used for carrying out via node and covers expansion;
Via node is broadcast to terminal with this bias, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
The system of selection of a kind of relay system small area, described method comprises:
Via node is determined the return link channel quality parameter;
Via node is by radio resource control RRC signal deployment return link channel quality parameter, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
A kind of relay system small area selective system, described system comprises via node and terminal, wherein:
Described via node is used for sending the information that is used for determining the return link channel quality to described terminal;
Described terminal, be used for access link and direct connected link are measured, determine access link channel quality and direct connected link channel quality, determine the return link channel quality according to the information that the via node that receives sends, and carry out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and select.
A kind of via node, described via node comprises:
The bias determination module is used for determining bias according to the return link channel quality, and this bias is used for carrying out via node and covers expansion;
Broadcast module, the bias that is used for the bias determination module is determined is broadcast to terminal, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
A kind of via node, described via node comprises:
The parameter determination module is used for determining the return link channel quality parameter;
Configuration module, be used for by radio resource control RRC signal deployment return link channel quality parameter, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
A kind of terminal, described terminal comprises:
Determination module is used for access link and direct connected link are measured, and determines access link channel quality and direct connected link channel quality, and determines the return link channel quality according to the information that the via node that receives sends;
Select module, be used for carrying out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and select.
The scheme that provides according to the embodiment of the invention, in relay system, terminal is when carrying out the residential quarter selection, select in conjunction with the auxiliary residential quarter of carrying out of the channel quality of relaying return link, thereby with respect to only carrying out the prior art that the residential quarter is selected according to access link channel quality and direct connected link channel quality, optimized the residential quarter selection scheme, improved the performance of terminal, solved carrying out the residential quarter according to access link channel quality and direct connected link channel quality when selecting, owing to the relatively poor problem that causes the poor-performing of terminal of return link situation.
Description of drawings
The macro base station that Fig. 1 provides for prior art and the Radio Link schematic diagram between the terminal;
Fig. 2 selects schematic diagram for relay system and residential quarter thereof that prior art provides;
Fig. 3 selects schematic diagram for relay system and residential quarter thereof that prior art provides;
The flow chart of steps of the relay system small area system of selection that Fig. 4 provides for the embodiment of the invention one;
Fig. 5 selects schematic diagram for relay system and residential quarter thereof that the embodiment of the invention two provides;
The flow chart of steps of the relay system small area system of selection that Fig. 6 provides for the embodiment of the invention three;
Fig. 7 selects schematic diagram for relay system and residential quarter thereof that the embodiment of the invention four provides;
The structural representation of the relay system small area selective system that Fig. 8 provides for the embodiment of the invention five;
The structural representation of the via node that Fig. 9 provides for the embodiment of the invention six;
The structural representation of the via node that Figure 10 provides for the embodiment of the invention seven;
The structural representation of the terminal that Figure 11 provides for the embodiment of the invention eight.
Embodiment
In the prior art, when terminal is carried out the residential quarter selection in relay system, only consider the quality of the access link of RN/eNB, and do not consider the quality of the return link of RN.And in fact, the performance of RN is subjected to the return link restriction, and therefore, existing residential quarter selection scheme may cause the terminal residential quarter to be selected and the unmatched situation of services sites performance.The embodiment of the invention proposes a kind of in relay system, further consider the residential quarter selection scheme of the enhancing of return link quality, be that terminal is carried out the residential quarter selection according to access link channel quality, return link channel quality and direct connected link channel quality, wherein, it is definite that access link channel quality and direct connected link channel quality can be that end-on incoming link and direct connected link are measured, and the return link channel quality can be that terminal is determined according to the information that the via node that receives sends.And designed two kinds of different implementations, have the problem that the residential quarter selection scheme exists in the relay system now to solve, thereby further improve the performance of relay system.The present invention program describes mainly for relaying in the most widely used 1 type band in the LTE-A system.
Below in conjunction with Figure of description, two kinds of different implementations selecting by three pairs of relay system small areas provided by the invention of embodiment one and embodiment describe.
Embodiment one,
The embodiment of the invention one provides the system of selection of a kind of relay system small area, and the steps flow chart of the method comprises as shown in Figure 4:
With covering extension class among the Pico seemingly, RN can configure a bias (Bias) in the residential quarter of via node selectance value (such as RSRP or RSRQ), this bias is used for carrying out via node and covers expansion, especially, in the present embodiment, Bias determines according to the channel quality of relaying return link.
For channel quality return link preferably, can configure larger Bias, for the relatively poor return link of channel quality, can configure less Bias.Concrete, can determine bias Bias by following formula:
Bias＝f(Quality_of_Backhaul)
Wherein, Quality_of_Backhaul represents the return link channel quality parameter, and independent variable is that the function f (x) of Quality_of_Backhaul is for increasing function.The return link channel quality parameter can be RSRP or the RSRQ of return link.
Further, under certain conditions, for the coverage of the RN that reduces to have relatively poor return link channel quality and the RUE number of service thereof, when the channel quality of return link during less than a certain thresholding, Bias can consider to be configured to negative value, in the present embodiment namely, bias can be positive number, zero or negative.By the reasonable disposition to Bias, can realize more rational coverage for RN, further improve the performance of RUE.
In this step and the prior art, the mode of via node broadcasting bias is identical, does not repeat them here.
In this step, terminal can be determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
Describe below by the scheme of a concrete example to the embodiment of the invention one.
Embodiment two,
Schematic diagram is selected in relay system and residential quarter thereof that being illustrated in figure 5 as embodiment two provides, if it is RSRP1 that the RUE3 among Fig. 5 selects the metric of RN1, selecting the metric of RN2 is RSRP2+Bias, supposes again RSRP2+Bias＞RSRP1, when then selecting in the residential quarter, RUE3 can select RN2.Because RN2 has better return link channel quality, even the poor-performing of the access link of RUE3, but because the bottleneck of RN system is return link, (access link of the variation of RUE3 can distribute the interface-free resources of more access link to remedy by RN2), so the performance of RUE3 can improve.
The scheme that provides according to the embodiment of the invention one and embodiment two, via node is determined amount of bias according to the channel quality of return link, thereby so that terminal can be selected the residential quarter according to this bias, access link channel quality and direct connected link channel quality, mainly improved between RN/RN and the performance of the edge customer between DeNB/RN, and only need to make amendment to the RN node of network side, do not need terminal is made amendment with relevant space interface signaling and form, also have advantages of and be convenient to realize.
Embodiment three,
The embodiment of the invention three provides the system of selection of a kind of relay system small area, and the steps flow chart of the method comprises as shown in Figure 6:
In the present embodiment, RN can increase extra broadcast signaling.In this step, RN can directly broadcast its channel quality parameter about return link (channel quality of this parameter characterization return link, can but to be not limited to be RSRP or the RSRQ of return link).Certainly, via node also can be controlled (RRC, Radio Resource Control) signal deployment to terminal by Radio Resource with the return link channel quality parameter.
This step comprises: terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
In the present embodiment, can define terminal pins to the operation of the broadcast signaling (this signaling is used for via node broadcasting return link channel quality parameter) of extra increase.
In this step, if terminal is received the return link channel quality parameter of via node broadcasting, then terminal can (can represent with the measured value of terminal to the access link of RN according to this parameter and access link channel quality, this measured value can be RSRP or RSRQ), recomputate the residential quarter selectance value of selecting this RN, and then carry out the residential quarter and select.
Concrete, Reference Signal Received Quality RSRQ1 take the return link channel quality parameter as the return link channel, access link channel quality is expressed as example with the Reference Signal Received Quality RSRQ2 of access link channel, can determine the residential quarter selectance value RSRQ3 that described via node is corresponding by following formula:
RSRQ3＝f(RSRQ1，RSRQ2)
More excellent, the minimum value in the Reference Signal Received Quality of the Reference Signal Received Quality of access link channel and return link channel can be defined as residential quarter selectance value corresponding to described via node.
Certainly, if terminal is not received the return link channel quality parameter of via node broadcasting, then can calculate the residential quarter selectance value of selecting this RN according to existing method (such as the RSRP of the access link that directly uses this RN).
In this step, terminal is selected the mode of residential quarter, in prior art, terminal selects the mode of residential quarter similar according to access link channel quality and direct connected link channel quality, concrete, terminal can be with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
Describe below by the scheme of a concrete example to the embodiment of the invention three.
Embodiment four,
Schematic diagram is selected in relay system and residential quarter thereof that being illustrated in figure 7 as embodiment four provides, the return link channel quality of supposing RN1 represents with RSRQ0, the direct connected link channel quality that RUE1 is directly connected to DeNB represents with RSRQ1, the access link channel quality that RUE1 is connected to RN1 represents with RSRQ2, RSRQ0＜RSRQ1＜RSRQ2, RSRQ1 and RSRQ2 can be that RUE1 directly measures.Then RUE1 is when carrying out the residential quarter selection, RUE1 selects the residential quarter selectance value of RN can be RSRQ3=min (RSRQ0, RSRQ2) (this represents when terminal is connected to RN, and its residential quarter selectance value is determined by the minimum value of access link channel quality and return link channel quality).Then pass through this kind method, the estimation that the performance when terminal is selected different nodes (DeNB or RN) can more be mated.For the RUE1 among Fig. 7, owing to RSRQ1＞RSRQ3 this moment, RUE1 can select to be connected to DeNB, and according to existing method, RUE1 can select to be connected to RN1, so the performance of RUE1 can improve.
The scheme that provides according to the embodiment of the invention three and embodiment four, terminal can be determined the residential quarter selectance value that via node is corresponding according to return link channel quality parameter and access link channel quality, and according to this residential quarter selectance value and direct connected link channel quality selection residential quarter, mainly improved the performance of the edge customer between RN and the DeNB, and had advantages of equally and be simple and easy to realize.
With the embodiment of the invention one～embodiment four based on same inventive concept, following system and device is provided.
Embodiment five,
The embodiment of the invention five provides a kind of relay system small area selective system, and the structure of this system can comprise via node 11 and terminal 12 as shown in Figure 8, wherein:
Described via node 11 is used for sending the information that is used for determining the return link channel quality to described terminal; Described terminal 12 is used for access link and direct connected link are measured, determine access link channel quality and direct connected link channel quality, determine the return link channel quality according to the information that the via node that receives sends, and carry out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and select.
Described via node 11 is used for determining bias according to the return link channel quality, and this bias is broadcast to terminal, and this bias is used for carrying out via node and covers expansion; Described terminal 12 specifically is used for determining the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
Described via node 11 is used for the return link channel quality parameter is broadcast to terminal or the return link channel quality parameter is passed through the radio resource control RRC signal deployment to terminal; Described terminal 12 specifically is used for determining the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
Embodiment six,
The embodiment of the invention six provides a kind of via node, and the structure of this via node can as shown in Figure 9, comprise:
Bias determination module 21 is for determining bias according to the return link channel quality, and this bias is used for carrying out via node and covers expansion; The bias that broadcast module 22 is used for the bias determination module is determined is broadcast to terminal, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
Bias determination module 21 is concrete for determining bias Bias by following formula:
Bias＝f(Quality_of_Backhaul)
Wherein, Quality_of_Backhaul represents the return link channel quality parameter, and independent variable is that the function f (x) of Quality_of_Backhaul is for increasing function.
Embodiment seven,
The embodiment of the invention seven provides a kind of via node, and the structure of this via node can as shown in figure 10, comprise:
Embodiment eight,
The embodiment of the invention eight provides a kind of terminal, and the structure of this terminal can as shown in figure 11, comprise:
The determination module 41 concrete biases that are used for receiving via node broadcasting, this bias is used for carrying out via node and covers expansion, and this bias is that via node is determined according to the return link channel quality; Select module 42 specifically to be used for determining the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality that determination module receives, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
The determination module 41 concrete return link channel quality parameter of reception via node broadcasting or the return link channel quality parameter that via node passes through the radio resource control RRC signal deployment of being used for; Select module 42 concrete for determining the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
RSRQ3＝f(RSRQ1，RSRQ2)
Wherein, the return link channel quality parameter is the Reference Signal Received Quality RSRQ1 of return link channel, and access link channel quality represents with the Reference Signal Received Quality RSRQ2 of access link channel.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (20)
1. relay system small area system of selection is characterized in that, described method comprises:
End-on incoming link and direct connected link are measured, and determine access link channel quality and direct connected link channel quality, and determine the return link channel quality according to the information that the via node that receives sends;
Terminal is carried out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and is selected.
2. the method for claim 1 is characterized in that, terminal receives the information that via node returns, and specifically comprises:
Terminal receives the bias of via node broadcasting, and this bias is used for carrying out via node and covers expansion, and this bias is that via node is determined according to the return link channel quality;
Terminal is carried out the residential quarter selection according to access link channel quality, return link channel quality and direct connected link channel quality, specifically comprises:
Terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
3. method as claimed in claim 2 is characterized in that, via node is determined bias according to the return link channel quality, specifically comprises by following formula and determines bias Bias:
Bias＝f(Quality_of_Backhaul)
Wherein, Quality_of_Backhaul represents the return link channel quality parameter, and independent variable is that the function f (x) of Quality_of_Backhaul is for increasing function.
4. method as claimed in claim 3 is characterized in that, described bias is positive number, zero or negative.
5. the method for claim 1 is characterized in that, terminal receives the information that via node returns, and specifically comprises:
Terminal receives the return link channel quality parameter of via node broadcasting or the return link channel quality parameter that via node passes through the radio resource control RRC signal deployment;
Terminal is carried out the residential quarter selection according to access link channel quality, return link channel quality and direct connected link channel quality, specifically comprises:
Terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter;
Terminal is with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
6. method as claimed in claim 5 is characterized in that, terminal is determined the residential quarter selectance value RSRQ3 that described via node is corresponding by following formula:
RSRQ3＝f(RSRQ1，RSRQ2)
Wherein, the return link channel quality parameter is the Reference Signal Received Quality RSRQ1 of return link channel, and access link channel quality represents with the Reference Signal Received Quality RSRQ2 of access link channel.
7. method as claimed in claim 6 is characterized in that, the minimum value in the Reference Signal Received Quality of the Reference Signal Received Quality of access link channel and return link channel is defined as residential quarter selectance value corresponding to described via node.
8. relay system small area system of selection is characterized in that, described method comprises:
Via node is determined bias according to the return link channel quality, and this bias is used for carrying out via node and covers expansion;
Via node is broadcast to terminal with this bias, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
9. relay system small area system of selection is characterized in that, described method comprises:
Via node is determined the return link channel quality parameter;
Via node is by radio resource control RRC signal deployment return link channel quality parameter, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
10. a relay system small area selective system is characterized in that, described system comprises via node and terminal, wherein:
Described via node is used for sending the information that is used for determining the return link channel quality to described terminal;
Described terminal, be used for access link and direct connected link are measured, determine access link channel quality and direct connected link channel quality, determine the return link channel quality according to the information that the via node that receives sends, and carry out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and select.
11. system as claimed in claim 10 is characterized in that,
Described via node is used for determining bias according to the return link channel quality, and this bias is broadcast to terminal, and this bias is used for carrying out via node and covers expansion;
Described terminal, concrete being used for determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
12. system as claimed in claim 10 is characterized in that,
Described via node is used for the return link channel quality parameter is broadcast to terminal or the return link channel quality parameter is passed through the radio resource control RRC signal deployment to terminal;
Described terminal, concrete being used for determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
13. a via node is characterized in that, described via node comprises:
The bias determination module is used for determining bias according to the return link channel quality, and this bias is used for carrying out via node and covers expansion;
Broadcast module, the bias that is used for the bias determination module is determined is broadcast to terminal, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
14. via node as claimed in claim 13 is characterized in that, the bias determination module, and concrete being used for determined bias Bias by following formula:
Bias＝f(Quality_of_Backhaul)
Wherein, Quality_of_Backhaul represents the return link channel quality parameter, and independent variable is that the function f (x) of Quality_of_Backhaul is for increasing function.
15. a via node is characterized in that, described via node comprises:
The parameter determination module is used for determining the return link channel quality parameter;
Configuration module, be used for by radio resource control RRC signal deployment return link channel quality parameter, so that terminal is determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
16. a terminal is characterized in that, described terminal comprises:
Determination module is used for access link and direct connected link are measured, and determines access link channel quality and direct connected link channel quality, and determines the return link channel quality according to the information that the via node that receives sends;
Select module, be used for carrying out the residential quarter according to access link channel quality, return link channel quality and direct connected link channel quality and select.
17. terminal as claimed in claim 16 is characterized in that, determination module, the concrete bias that is used for receiving via node broadcasting, this bias are used for carrying out via node and cover expansion, and this bias is that via node is determined according to the return link channel quality;
Select module, concrete being used for determined the residential quarter selectance value that described via node is corresponding according to described bias, access link channel quality that determination module receives, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter.
18. terminal as claimed in claim 16 is characterized in that, determination module, the concrete return link channel quality parameter of reception via node broadcasting or the return link channel quality parameter that via node passes through the radio resource control RRC signal deployment of being used for;
Select module, concrete being used for determined the residential quarter selectance value that described via node is corresponding according to described return link channel quality parameter and access link channel quality, determine the residential quarter selectance value that the host base station is corresponding according to the direct connected link channel quality, described residential quarter selectance value is used for the probability that the expression terminal is selected this residential quarter, and with the host base station of the residential quarter selectance value maximum of correspondence or the residential quarter that via node is defined as selecting.
19. terminal as claimed in claim 18 is characterized in that, selects module, concrete being used for determined the residential quarter selectance value RSRQ3 that described via node is corresponding by following formula:
RSRQ3＝f(RSRQ1，RSRQ2)
Wherein, the return link channel quality parameter is the Reference Signal Received Quality RSRQ1 of return link channel, and access link channel quality represents with the Reference Signal Received Quality RSRQ2 of access link channel.
20. terminal as claimed in claim 19, it is characterized in that, select module, concrete being used for is defined as residential quarter selectance value corresponding to described via node with the minimum value of the Reference Signal Received Quality of the Reference Signal Received Quality of access link channel and return link channel.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100748954A CN103327550A (en) | 2012-03-20 | 2012-03-20 | Cell selection method, terminal, relay node and system in relay system |
| PCT/CN2013/072654 WO2013139231A1 (en) | 2012-03-20 | 2013-03-15 | Method for selecting cell in relay system, terminal, relay node, and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100748954A CN103327550A (en) | 2012-03-20 | 2012-03-20 | Cell selection method, terminal, relay node and system in relay system |
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| CN103327550A true CN103327550A (en) | 2013-09-25 |
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| WO (1) | WO2013139231A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716853A (en) * | 2013-10-22 | 2014-04-09 | 南京邮电大学 | Self-adaption multiple-relay selection method in terminal through communication system |
| WO2016119177A1 (en) * | 2015-01-29 | 2016-08-04 | 华为技术有限公司 | Cell selection method and apparatus |
| WO2016197365A1 (en) * | 2015-06-11 | 2016-12-15 | Nokia Technologies Oy | Support for minimization of service interruption with device-to-device based user-equipment-to-network relay |
| WO2017107104A1 (en) * | 2015-12-23 | 2017-06-29 | 华为技术有限公司 | Communication method and device |
| CN108541389A (en) * | 2015-05-14 | 2018-09-14 | 高通股份有限公司 | System, method and apparatus for the relay selection based on link-quality |
| CN112153559A (en) * | 2019-06-27 | 2020-12-29 | 本田技研工业株式会社 | Communication system, computer-readable storage medium, and information processing method |
| WO2021243887A1 (en) * | 2020-06-03 | 2021-12-09 | Oppo广东移动通信有限公司 | Data transmission method and device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111757544B (en) | 2019-03-29 | 2022-11-22 | 华为技术有限公司 | Communication method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040052257A1 (en) * | 2002-06-24 | 2004-03-18 | Miguel Abdo | Automatic discovery of network core type |
| CN102036285A (en) * | 2009-10-02 | 2011-04-27 | 捷讯研究有限公司 | Determining link quality for networks having relays |
| CN102045761A (en) * | 2009-10-26 | 2011-05-04 | 中国移动通信集团公司 | Method and equipment for transmitting data in relay system |
| WO2011094644A1 (en) * | 2010-01-28 | 2011-08-04 | Qualcomm Incorporated | Method and apparatus for biasing a handoff decision based on a backhaul link |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215545B (en) * | 2010-04-09 | 2014-07-02 | 中国移动通信集团公司 | Method and device for re-establishing return link in relay network |
-
2012
- 2012-03-20 CN CN2012100748954A patent/CN103327550A/en active Pending
-
2013
- 2013-03-15 WO PCT/CN2013/072654 patent/WO2013139231A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040052257A1 (en) * | 2002-06-24 | 2004-03-18 | Miguel Abdo | Automatic discovery of network core type |
| CN102036285A (en) * | 2009-10-02 | 2011-04-27 | 捷讯研究有限公司 | Determining link quality for networks having relays |
| CN102045761A (en) * | 2009-10-26 | 2011-05-04 | 中国移动通信集团公司 | Method and equipment for transmitting data in relay system |
| WO2011094644A1 (en) * | 2010-01-28 | 2011-08-04 | Qualcomm Incorporated | Method and apparatus for biasing a handoff decision based on a backhaul link |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716853B (en) * | 2013-10-22 | 2017-07-07 | 南京邮电大学 | A kind of self adaptation many relay selection methods in terminal direct connection communication system |
| CN103716853A (en) * | 2013-10-22 | 2014-04-09 | 南京邮电大学 | Self-adaption multiple-relay selection method in terminal through communication system |
| US10327182B2 (en) | 2015-01-29 | 2019-06-18 | Huawei Technologies Co., Ltd. | Cell selection method and apparatus |
| CN107211332B (en) * | 2015-01-29 | 2020-04-28 | 华为技术有限公司 | Cell selection method and device |
| WO2016119177A1 (en) * | 2015-01-29 | 2016-08-04 | 华为技术有限公司 | Cell selection method and apparatus |
| CN107211332A (en) * | 2015-01-29 | 2017-09-26 | 华为技术有限公司 | A kind of cell selecting method and device |
| US10009808B2 (en) | 2015-01-29 | 2018-06-26 | Huawei Technologies Co., Ltd. | Cell selection method and apparatus |
| CN108541389A (en) * | 2015-05-14 | 2018-09-14 | 高通股份有限公司 | System, method and apparatus for the relay selection based on link-quality |
| WO2016197365A1 (en) * | 2015-06-11 | 2016-12-15 | Nokia Technologies Oy | Support for minimization of service interruption with device-to-device based user-equipment-to-network relay |
| US10743235B2 (en) | 2015-06-11 | 2020-08-11 | Nokia Technologies Oy | Support for minimization of service interruption with device-to-device based user-equipment-to-network relay |
| WO2017107104A1 (en) * | 2015-12-23 | 2017-06-29 | 华为技术有限公司 | Communication method and device |
| US10667208B2 (en) | 2015-12-23 | 2020-05-26 | Huawei Technologies Co., Ltd. | Communication method and device |
| CN112153559A (en) * | 2019-06-27 | 2020-12-29 | 本田技研工业株式会社 | Communication system, computer-readable storage medium, and information processing method |
| US11425615B2 (en) | 2019-06-27 | 2022-08-23 | Honda Motor Co., Ltd. | Communication system, computer-readable storage medium, and information processing method |
| US11805450B2 (en) | 2019-06-27 | 2023-10-31 | Honda Motor Co., Ltd. | Communication system, computer-readable storage medium, and information processing method |
| WO2021243887A1 (en) * | 2020-06-03 | 2021-12-09 | Oppo广东移动通信有限公司 | Data transmission method and device |
| WO2021243604A1 (en) * | 2020-06-03 | 2021-12-09 | Oppo广东移动通信有限公司 | Data transmission method and device |
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| Publication number | Publication date |
|---|---|
| WO2013139231A1 (en) | 2013-09-26 |
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