CN102474896A - Device and method for controlling downlink flow in user equipment, relay node and evolved universal terrestrial radio access network nodeb - Google Patents
Device and method for controlling downlink flow in user equipment, relay node and evolved universal terrestrial radio access network nodeb Download PDFInfo
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Abstract
A new flow control scheme for avoiding and eliminating congestion is provided by the present invention, especially adapts for a radio relay network, therein, when a Relay Node (RN) (2) finds that the interface between the RN (2) and an Evolved Universal Terrestrial Radio Access Network NodeB (eNB) (3) is going to be congested, the RN (2) will transmit a request to the eNB (3) to decrease the downlink data transmission rate. Furthermore, when a User Equipment (UE) (1) finds that the interface between the UE (1) and the RN (2) is going to be congested, the UE (1) can notify the RN (2) by the similar means, and the RN (2) properly adjusts the data rate on which the RN (2) transmits data to the UE (1). Moreover, when the RN (2) receives the request to decrease the data rate from the UE (1), the RN (2) also can determine by itself whether to further request the eNB (3) to decrease the transmission rate of downlink data between the eNB (3) and the RN (2).
Description
Controlled in Yi Dong Final ends, relay station and relay management equipment with dry downlink traffic
Installed is put and method
Technical field
The present invention relates to the control of the flow in wireless relay network, base station, relay station, mobile terminal and its method for the downlink traffic control more particularly, in wireless relay network.Background technology
TCP utilizes sliding window mechanism, supports that flow is controlled end to end.TCP window is adjusted in units of byte, to adapt to the disposal ability of recipient.In each TCP block, receiving terminal indicates its receiving window size receiving window domain, so as not to transmitting terminal send it is too fast cause receiving terminal to overflow, or because receiving terminal processing is too fast and waste of resource.
TCP to obtain high reliability simultaneously and avoids congestion collapse using substantial amounts of mechanism.These mechanism controls enter the data rate of network, and they include：Sliding window, slowstart algorithm, congestion avoidance algorithm, quickly restart and fast restoration algorithm.For the detailed content of TCP congestion controls, RFC2001, RFC2018, RFC258K RFC2582, RFC2883 standards are seen.
Without the wireless network for introducing relaying, based on above-mentioned TCP schemes, flow control end to end and congestion control mechanism are completed.However, it can only work in source equipment with purpose end equipment.
With the follow-up evolution of LTE（LTE-Advanced, calls LTEA in the following text), in the network standard exemplified by IEEE 802.16m, relaying is considered as improving systematic function that there is provided a possible key technology of flexibly arranging net.In LTEA standardisation process, I classes relaying as base station in general sense, will possess the physical district ID (physical cell ID) of oneself, it means that they are invisible to mobile terminal unlike transparent relay.
For the sake of Fig. 1 is the schematic diagram of typical junction network, simplicity, a mobile terminal illustrate only（Hereinafter also referred to UE) 1, a relay station（Hereinafter also referred to RN) 2 and a relay management equipment（Hereinafter also referred to eNB) 3.Wherein, the interface between mobile terminal 1 and relay station 2 is shown as Uu, and the interface between relay station 2 and relay management equipment 3 shows
For Un.
In the junction network shown in Fig. 1, during relay station 2 deposits the data Slow from relay management equipment 3 in the presence of the descending Slow of relaying, for forwarding downwards.But, if the data transfer rate from relay management equipment 3 is very high, and when occurring congestion between relay station 2 and mobile terminal 1, the descending Slow of relaying of relay station 2, which is deposited, to be gradually filled with and overflows, new downlink data is abandoned because can not handle in time by relay station 2.
In addition, relay management equipment 3 does not know the reception situation to the downlink data from relay station 2 at mobile terminal 1 yet, therefore, even if the user equipment downlink Slow of mobile terminal 1, which is deposited, occurs in that spilling, the data for pointing to the mobile terminal 1 still continuously can be sent to relay station 2 by relay management equipment 3.Relay station 2 is either constantly abandoned to mobile terminal 1 but by mobile terminal 1 these data forwardings or the descending Slow of relaying of relay station 2 is deposited and is gradually filled with and overflows, therefore wastes wireless transmission resources, also increases the burden of the network equipment.
As can be seen here, wireless relay network needs a kind of special downlink traffic controlling mechanism.The content of the invention
In order to solve above mentioned problem of the prior art, the invention provides a kind of flow control plan for the purpose of avoiding and eliminate congestion of the new wireless relay network that is particularly suitable for use in, wherein, when relay station finds to will appear from congestion on its interface between relay management equipment, it can initiate to require the request of reduction downlink transmission data rate to relay management equipment.In addition, mobile terminal is when finding to will appear from congestion on oneself interface relay station between, it would however also be possible to employ similar mode is suitably adjusted to data transfer rate during terminal transmission data to inform relay station by relay station.In addition, when relay station is connected to the requirement from mobile terminal and reduces the request of data transfer rate, can also voluntarily determine whether to further reduce the downlink transmission data rate between relay management equipment and the relay station to relay management device request.These and other feature, the advantage of the present invention can become relatively sharp by discussed below.
According to an aspect of the invention, there is provided it is used for the stream control servicing unit for aiding in downlink traffic to control in a kind of mobile terminal in wireless relay network, including：First judgment means, for judge the user equipment downlink Slow of the mobile terminal deposit in residual capacity whether be less than or equal to first capacity threshold；First generating means, if the residual capacity in being deposited for the user equipment downlink Slow
Less than or equal to first capacity threshold, then a first reduced speed request message is generated, it is used to reduce the downlink transmission data rate between the relay station and the mobile terminal to the mobile terminal affiliated relay station request；First dispensing device, for the first reduced speed request message to be sent into the relay station.
According to another aspect of the present invention there is provided a kind of first control device for being used to carry out downlink traffic control in relay station, including：Second judgment means, for judging whether predetermined condition meets；Second generating means, for when the predetermined condition is met, a second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request belonging to the relay station；Second dispensing device, for the second reduced speed request message to be sent into the relay management equipment.
Preferably, above-mentioned first control device also includes：Determining device, for when second judgment means judge that the predetermined condition is met, at least one mobile terminal to be determined in each mobile terminal serviced by the relay station；Second generating means are additionally operable to：- generation the second reduced speed request message, the second reduced speed request message is used to reduce the downlink transmission data rate associated with least one described mobile terminal between the relay management equipment and the relay station to the relay management device request.
According to one of many examples that can be substituted for each other, second judgment means are used for：Judge whether the residual capacity relayed during descending Slow is deposited of the relay station is less than or equal to second capacity threshold, if the residual capacity relayed during descending Slow is deposited of the relay station is less than or equal to second capacity threshold, judge that the predetermined condition is met.
According to one of many examples that can be substituted for each other, second judgment means are used for：Judge whether to receive the first reduced speed request message that one or more mobile terminals are sent, wherein every the first reduced speed request message is used to ask the relay station to reduce the downlink transmission data rate between the relay station and corresponding mobile terminal, if receiving the first reduced speed request message that one or more mobile terminals are sent, judge that the predetermined condition is met.
Further, first judgment means are additionally operable to：If receiving the first reduced speed request message that one or more mobile terminals are sent, then determine whether whether the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, if the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, judge that the predetermined condition expires
Foot.
Preferably, the determining device is used for：One or more of mobile terminals are defined as at least one described mobile terminal.
According to another aspect of the invention there is provided the second control device for being used to carry out downlink traffic control in a kind of relay management equipment in wireless relay network, including：Reception device, for receiving the second reduced speed request message from a relay station, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request；Processing unit, for based on the second reduced speed request message, reducing the downlink transmission data rate between the relay management equipment and the relay station.
Preferably, second reduced speed request message indicates at least one mobile terminal in each mobile terminal that the relay station is serviced, above-mentioned processing unit is also based on the second reduced speed request message, reduces the downlink transmission data rate associated with least one mobile terminal between the relay management equipment and the relay station.
According to another aspect of the present invention there is provided a kind of method for being used to aid in downlink traffic to control in mobile terminal in wireless relay network, comprise the following steps：A. judge the user equipment downlink Slow of the mobile terminal deposit in residual capacity whether be less than or equal to first capacity threshold；If the residual capacity during B. the user equipment downlink Slow is deposited is less than or equal to first capacity threshold, a first reduced speed request message is then generated, it is used to reduce the downlink transmission data rate between the relay station and the mobile terminal to the mobile terminal affiliated relay station request；C. the first reduced speed request message is sent to the relay station.
According to another aspect of the invention there is provided a kind of method for being used to carry out downlink traffic control in relay station, comprise the following steps：I. judge whether predetermined condition meets；III. when the predetermined condition is met, a second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request belonging to the relay station；IV. the second reduced speed request message is sent to the relay management equipment.
Preferably, include before step III after step I and also：II. when the predetermined condition is met, by the relay station month good business each mobile terminal in determine at least one mobile terminal；The step III also includes：The second reduced speed request message is generated, second reduced speed request disappears
Cease for reducing the downlink transmission data rate associated with least one described mobile terminal between the relay management equipment and the relay station to the relay management device request.
According to one of multiple embodiments that can be substituted for each other, above-mentioned steps I includes：II judge whether the residual capacity relayed during descending Slow is deposited of the relay station is less than or equal to second capacity threshold or receives the first reduced speed request message that one or more mobile terminals are sent；If 12. the residual capacity during the descending Slow of relaying of the relay station is deposited is less than or equal to second capacity threshold, or receiving the first reduced speed request message sent from one or more mobile terminals, then judge that the predetermined condition is met.
Further, step II also includes：If receiving the first reduced speed request message that one or more mobile terminals are sent, relay station determines whether whether the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, if the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, judge that the predetermined condition is met.
According to another aspect of the invention there is provided a kind of method for being used to carry out downlink traffic control in relay management equipment in wireless relay network, comprise the following steps：0. receives the second reduced speed request message from a relay station, and the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request；
P. the second reduced speed request message is based on, the downlink transmission data rate between the relay management equipment and the relay station is reduced.
Preferably, wherein, the second reduced speed request message indicates at least one mobile terminal in each mobile terminal that the relay station is serviced；The step P also includes：Based on the second reduced speed request message, the downlink transmission data rate associated with least one mobile terminal between the relay management equipment and the relay station is reduced.The scheme that the present invention is provided can realize the resource utilization of optimization, and reduce the possibility of TCP slow turn-ons, and minimize RTT time delay.At least one embodiment of the present invention can also realize that the downlink traffic in wireless relay system is controlled with smaller granularity and signaling consumption.Design of at least one embodiment of the present invention due to having reused MAC layer, and the introducing present invention is reduced to the full extent to existing equipment, the influence of system.In addition, at least one embodiment of the present invention, relay management equipment distributes extremely limited resource for those mobile terminals for facing congestion, or even temporarily
Resource is not distributed for it, in this way, while the flow for realizing smaller particle size controls, avoids the wasting of resources, it ensure that the use of other terminal-pair resources, it is preferable that by the resource allocation that saves these to other mobile terminals, the utilization rate of resource is improved, is illustrated
By reading the detailed description made to non-limiting example made with reference to the following drawings, other features, objects and advantages of the invention will become more apparent upon.
Fig. 1 is the schematic diagram of a wireless relay network；
Fig. 2 is the systems approach flow chart for being used to carry out downlink traffic control in wireless relay network of a specific embodiment according to the present invention；
Fig. 3 is used to ask to reduce the signaling format schematic diagram of downstream data rate in the flow for according to specific embodiment of the invention in Fig. 2 shown in；
Fig. 4 be according to the present invention specific embodiment in Fig. 2 shown in flow in be used for ask reduction downstream data rate signaling format schematic diagram；
Fig. 5 is the stream control servicing unit block diagram controlled in the mobile terminal of wireless relay network for assisted downlink flow of a specific embodiment according to the present invention；
Fig. 6 is the first control device block diagram for being used to control downlink chain circuit data stream amount in relay station of a specific embodiment according to the present invention；
Fig. 7 is the second control device block diagram for being used to control downlink chain circuit data stream amount in relay management equipment of a specific embodiment according to the present invention.
Wherein, same or analogous reference represents same or analogous steps characteristic or device（Module）Feature.Embodiment
Multiple nonlimiting examples of the present invention are described hereinafter with reference to above-mentioned accompanying drawing.It will be appreciated by those skilled in the art that these nonlimiting examples are only to help to understand the solution of the present invention, any limitation is not constituted to the protection domain of the application, the protection domain of the application is determined by appended claims.
Understand for convenience, and clearly explain the scope of the claims of the application, it is right
Some herein presented conceptual illustrations are as follows：
Congestion：When carrying out data transmission, the speed that the speed and recipient for sending data are received and handled not is moment perfect matching, on the one hand, when data are less, it is likely to occur sender compartment of terrain and sends data, and recipient when minority in addition to receiving and handling the data that receive, the most of the time is in idle condition；On the other hand, sender also have transmission data transfer rate it is relatively large when, now, if recipient can not in time be digested to the data received, so it will gradually rise for the Slow of data pending after temporary the receive full levels deposited, and when Slow deposits spilling or close to when overflowing, cause the transmission between sender and recipient no longer so smooth, namely occur congestion.Depending on the amount and the disposal ability of recipient of sender's outgoing data, this congestion is usually temporary transient, but if cannot handle well, certainly will cause above-mentioned variety of problems.
RLC state reports：In ARQ mechanism, this kind of message refers to ACK the and NACK message in ARQ mechanism, represent whether the data wherein marked have been correctly received respectively, usually, when being connected to ACK message, follow-up new data will be sent to recipient by sender, if receiving NACK message, the data wherein indicated are retransmitted.
Relay management equipment：Herein, relay management equipment refers to the such network equipment for being connected to relay station network side, it can receive the upstream data that the relay station is sent via the wireless backhaul links of relay station, can also via downlink to the relay station send downlink data.It is realized in general sense（For example in WiMAX network）Base station function.Because this kind equipment is referred to as E-UTRAN NodeB in LTEA, therefore two aspects are summarized with " relay management equipment " herein.
Descending Slow is relayed to deposit：Relaying descending Slow and depositing to refer to is used to deposit the downlink data progress Slow received in relay station, and so that the Slow then forwarded is deposited, the Slow for being referred to as relay station in user side is deposited.
User equipment downlink Slow is deposited：User equipment downlink Slow, which deposits to refer to, to be used to deposit the downlink data progress Slow received in the terminal, so that follow-up processing such as broadcasting, the Slow stored is deposited.In description below to nonlimiting examples, for ease of understanding, with reference to Fig. 1 institutes
Each network equipment shown.Fig. 2 shows the systems approach flow chart for being used to carry out the flow control on downlink in wireless relay network of a specific embodiment according to the present invention.
Method shown in it starts from step S20, and wherein relay station 2 judges whether predetermined condition meets.Wherein, the embodiment according to Fig. 2, relay station 2 will judge that the predetermined condition is met when following condition is met：
Condition 1:Capacity during the descending Slow of relaying of relay station 2 is deposited is less than second capacity threshold.To be judged for condition 1, relay station 2 should relay the residual capacity that descending Slow deposits to it and monitor, and the residual capacity real-time monitored is compared with second capacity threshold.It should be understood that, relay station 2, which is used for the Slow that is compared, which deposits residual capacity and the second capacity threshold, can be presented as the amount in units of bit or byte, for example, being deposited to total size for the 64Kbytes descending Slow of relaying, it is 8Kbytes to set its second capacity threshold;On the other hand, relay station 2, which is used for the Slow that compares, which deposits residual capacity and the second capacity threshold, can also be presented as a ratio value, for example, set the second capacity threshold be 25% when, if the descending Slow of the relaying of relay station 2, which is deposited, has been occupied 75% or more, the judged result of affirmative will be then obtained in step S20, namely judges that predetermined condition is met.
To ensure this paper fluency, for the other conditions being discussed in step S20, it will again do and deploy after this example is finished to flow introduction shown in Fig. 2.
It should be understood that, above-mentioned judgement based on residual capacity and the second capacity threshold can also have other implementations, for example, by determining the capacity that Slow has been occupied in depositing in units of bit or byte, and be compared itself and a threshold value in units of bit or byte, when having occupied capacity more than this threshold value, then being deposited equivalent to Slow tends to be full of.This manner of comparison is suitable with the above-mentioned manner of comparison based on residual capacity and the second capacity threshold, should be understood as by above-mentioned manner of comparison covering.In addition, can also be carried out by the part already taken up as monitoring and in the way of judging object in the way of an ancient type of spoon example value.
Advantageously, in this example, because relay station 2 just triggers flow-control operation relaying when descending Slow deposits the trend for occurring overflowing, it is to avoid actually occurring for overflowing, so as to be more beneficial for the Optimum utilization of resource.
When predetermined condition is met, this method enters step S21, wherein, relay station 2 generates a second reduced speed request message, and the second reduced speed request message can have diversified forms, for example,
By defining the message with brand new format, and configured to realize by the sending and receiving end to the message, or, a kind of message with typical format is defined, latter approach is conducive to reducing the present invention to existing equipment, the influence of system.
According to multiple can be mutually in alternative example one of above-mentioned second reduced speed request message, what is generated in step S21 is a RRC signaling, and relay capabilities message is referred to as herein（RN capability transfer message), it is similar to existing terminal capability message (UE capability transfer message) in RRC signaling, in the domain of one entitled " RN-category " in the message, the ability to accept to downstream signal of relay station 2 is designated, the ability can be by maximum transmitted block（Transport block) size and layer two（MAC/RLC layers）Slow size is deposited to represent.If continuing to use corresponding value in the form of existing UE capabilities messages, RN-category domains there are 5 kinds, 5 class RN have been corresponded to respectively, and its ability to accept to the downstream signal from relay management equipment is successively decreased.
The specific RRC signaling is in this example as the application of the second reduced speed request message, when relay station 2 can generate the message in the step s 21, RN-category value is adjusted to indicate a lower ability to accept grade than before, so as to show to relay management equipment 3, the type of relay station 2 has changed, and please adjust descending data rate.
In step S22, the second reduced speed request message of generation is that the RN capabilities messages are sent to relay management equipment 3.Correspondingly, relay management equipment 3 is after the RN capabilities messages are received, the parsing that meeting passes through the content to RN-category, recognize the speed that relay station 2 can actually be dealt with now, the speed dealt with is easier in other words, then, according to the QoS characteristics of radio bearer, corresponding radio bearer during for sending downlink data to relay station 2 can be adjusted immediately（Radio bearer) on transmission rate.For example, on the premise of the downlink data rate upper limit that relay station type indicated in no more than the RN-category can bear, continuing to send downlink data to the relay station with a high data transfer rate of trying one's best.
Second reduced speed request message of above-mentioned RRC signaling type is while realizing with the relay station voluntarily downlink traffic control of report triggering conditions, original message format is continued to use, had certain effect for the influence reduced to system, but, by the message format used only will be expected the reduction of downstream data rate to do to represent with several classifications, therefore granularity is larger, in addition, depending on the build-in attribute of RRC signaling itself, flow control is carried out using RRC information
The signaling consumption that can be brought is made very important, in addition, the delay problem of RRC signaling is also worth noting.
Another in multiple embodiments that can mutually replace of the second reduced speed request message, the second reduced speed request message generated in step S20 is the message of a MAC layer, as shown in Figure 3.Compared with RRC signaling, the time delay of MAC message, signaling consumption are all more satisfactory.This will be described in detail below.
In MAC message, MAC PDU attached bags head branch includes the Logic Channel Identifier corresponding with the message, and it acts on the Type domains being similar in some message, plays type to message, the mark action of function.Such Logic Channel Identifier in the form of indexing to be embodied in attached bag head, so as to represent more information with less data volume, specifically as shown in table 1：
Table 1：Logic Channel Identifier Suo Gong I in MAC message
From table 1, it is used as the index of the second reduced speed request message in this example using 01011 in originally reserved 01011-11001 without loss of generality.
It is used as the load of the request message, the rate reduction factor（Rate reduction factor) for showing a new downstream data rate desired by relay station 2 to relay management equipment 3,
Its concrete form includes but is not limited to shown in table 2:
Table 2:The index of the rate reduction factor
Pass through the second reduced speed request message in this example as above, a desired new downstream data rate can be informed relay management equipment 3 by relay station 2, wherein, the size that each speed shown in table 2 reduces the new transmission block of factor representation should be preferably a ratio of the maximum transmitted block of the relay station, for example, when the speed reduction factor is represented to index 0111, that is, show that the most multipotency of relay station 2 supports the downlink data transmission between relay control equipment 3 and relay station 2 with the transmission block progress of 70% size of maximum transmitted block.
Then, in this embodiment, the request that relay management equipment 3 is sent based on relay station 2 in step S22, adjusts the size of transmission block during for sending downlink data to relay station 2 in step s 30.
Miscellaneous service type is had in view of each mobile terminal, it is preferable that the flow control plan proposed in the present invention acts only on NGBR (not guaranteed rates）The business of type, and for GBR (guaranteed rates）The business of type, is guaranteed rate, not reduces.But, this preference is understood not to the present invention and cannot be used for reducing the downlink transmission rate of GBR type services under any circumstance.Hereinafter describe easy, do not repartition downlink business（Data）Type（NGBR or GBR).
In two examples hereinbefore told about, the second reduced speed request message that relay station 2 is sent to relay management equipment 3 all causes relay management equipment 3 integrally to reduce all downlink datas for being sent to the relay station, and these downlink datas are actually to have corresponded to each mobile terminal that the relay station is serviced, this is also implied that, even if Slow is deposited and tended to full of caused the problem of being due at one or two of mobile terminal in other words for congestion at relay station 2, the downstream data rate for all mobile terminals that relay station management equipment 3 still can be serviced relay station 2 lowers, and this may will cause other mobile terminals can not be to maximize and suitable speed obtains descending data.
In consideration of it, present invention further propose that, relay station 2 determines at least one mobile terminal after the situation that the descending Slow of relaying based on itself is deposited obtains the judged result of affirmative in step S20 from each mobile terminal that it is being serviced（The step not shown in figure）Then the identification information of at least one identified mobile terminal is embodied in the MAC message generated in the step s 21, and for these mobile terminals, it may be referred to table 2 and assign a rate reduction factor respectively for it, these factors can be identical with identical, different or part.Importantly, at least one mobile terminal determined by above-mentioned should be the mobile terminal for occurring in that congestion, so elected targetedly reduction speed be only it is most rational.In this example, relay station 2 determines which mobile terminal occurs in that congestion in such a way, so that causing it to relay descending Slow and deposit faces spilling.
Typically, relay station 2 selects continually to retransmit those mobile terminals of downlink data as at least one above-mentioned mobile terminal by relay station 2 for it within the past period.Such mobile terminal is often the channel circumstance that itself is in deep fade, or the user equipment downlink Slow of itself deposits and occur in that spilling.State and the ability of each mobile terminal that relaying descending Slow of the reference privacy of the determination of relay station 2 at least one mobile terminal also including relay station 2 is deposited（Maximum transport block size and the Slow of layer two deposit size etc.）With RLC state reports, HARQ feedback report etc..
Pass through such mode, relay station 2 more targetedly can ask the reduction downstream data rate associated with part mobile terminal to management equipment, the MAC message used is as shown in Fig. 4, wherein, represent the corresponding rate reduction factor for which mobile terminal using the identification information of mobile terminal.It is, of course, preferable to will mainly reduce the NGBR type industry associated with least one described mobile terminal in ground, the step S30 of relay management equipment 3 thereafter
The downstream data rate of business.In addition, according to the different network architectures, relay management equipment 3 each mobile terminal that relay station 2 is serviced may can be recognized under some network architectures, therefore, it is such to be more suitable for such network architecture for specific mobile terminal to initiate the scheme of request to relay management equipment 3, wherein, relay management equipment 3 can recognize which business the mobile terminal that relay station 2 is serviced all is using.It is exactly generally speaking：When relaying management equipment 3 can distinguish the mobile terminal under relay station 2, relay station can inform the speed of relay management equipment reduction wherein some terminal；Conversely, relay station is only capable of informing the speed for all terminals that relay management equipment reduces its service.In example described above, it is described in detail with the criterion that relay station 2 is used as in step S20 according to condition 1, below, referring again to step S20 another implementation.Wherein, when condition 2 is satisfied, relay station 2 can also be determined as that predetermined condition is satisfied, and this condition 2 is exactly：Receive the first reduced speed request message from one or more mobile terminals.Certainly, one or more mobile terminals mentioned here are all serviced by the relay station 2.
According to this example, descending Slow is relayed with regard to it similar to relay station 2 and deposits the above-mentioned judgement carried out, the situation that mobile terminal 1 is deposited with regard to its user equipment downlink Slow makes the following judgment：Judge the user equipment downlink Slow of mobile terminal 1 deposit in residual capacity whether be less than or equal to first capacity threshold, particular content on the judgement, it is repeated no more with depositing essentially identical with the comparison procedure of the second capacity threshold above in connection with relaying descending Slow.When residual capacity is less than or equal to the first capacity threshold, mobile terminal 1 will generate a first reduced speed request message, the message is used to ask to reduce the downlink transmission data rate between the relay station and the mobile terminal 1 to relay station 2, by taking mobile terminal 1 as an example, the first reduced speed request message that it is generated can be the message with the second reduced speed request message same type presented hereinabove, such as the UE capabilities messages in RRC, or the MAC message shown in Fig. 3.
Similarly, the UE-category domains in UE capabilities messages can be used for roughly indicating a new downlink transmission rate to relay station 2, and the rate reduction factor in MAC message then can be done to represent with smaller granularity to relay station 2.
Relay station 2, can no matter which kind of situation the descending Slow of relaying of its own be deposited in after the first reduced speed request message that one or more mobile terminal is sent is received（Free time still tends to
It is full of）, the second reduced speed request message as described above is all generated, so as to issue the data rate of relay station 2 by reducing relay management equipment 3, the data rate that relay station 2 is sent to mobile terminal is reduced indirectly.Wherein, the second reduced speed request message that request of the relay station 2 based on mobile terminal is initiated can only ask the transmission rate of all downlink datas between reduction and the relay station 2 to relay management equipment 3, certainly, this mode is not preferred enough, because although being wherein likely to have part mobile terminal does not occur congestion, the speed of its downlink data, which has been also suffered from, to be involved.Then, preferably, when relay station 2 generates the second reduced speed request message in the step s 21, specially one or more mobile terminals for having sent the first reduced speed request message are defined as at least one above-mentioned mobile terminal, this at least one mobile terminal will be in the second reduced speed request message generated in the step s 21 be asserted, as shown in figure 4, so that reduction of speed is more targeted.
On the basis of condition 2, further it can be changed, namely, relay station 2 simultaneously not simply only decides that predetermined condition is met after the first reduced speed request message is received, but it is further judged, for example, judging that it relays whether the residual capacity that descending Slow deposits is less than or equal to the 3rd capacity threshold, the comparison procedure is referred to description above related to the second capacity threshold, repeats no more.It should be appreciated that the second foregoing capacity threshold can be the same or different with the 3rd capacity threshold, according to the specific embodiment of the present invention, for same relay station, the second capacity threshold is less than or equal to the 3rd capacity threshold.
According to each embodiment of the present invention, it is often temporary transient in view of the anxieties deposited of the Slow at relay station or mobile terminal, it is used as the supplement of such scheme, the mobile terminal or relay station of request reduction downlink transmission rate can also initiate one so that the request for the rate recovery being lowered before in due course, shown in this request typically such as Fig. 3 or 4, and, the value of speed " reduction " factor therein is higher than corresponding value in the second rate reduction request message for sending before, it is achieved thereby that the recovery of speed.Alternatively, above-mentioned recovery process can also be not needed upon asking realizing, for example, relay management equipment 3 (relay station 2) is reduced in the request based on relay station 2 (mobile terminal 1) after downlink transmission rate, after the time by a predetermined length, automatically the speed being lowered progressively is recovered flat Slow.According to the specific embodiment of the present invention, there is provided a kind of shifting in wireless relay network
It is used for the stream control servicing unit for aiding in downlink traffic to control in dynamic terminal, as shown in figure 5, the stream control servicing unit 10 includes：
First judgment means 100, for judging mobile terminal（Mobile terminal 1 as shown in Figure 1) user equipment downlink Slow deposit in residual capacity whether be less than or equal to first capacity threshold；
First generating means 101, if the residual capacity in being deposited for user equipment downlink Slow is less than or equal to first capacity threshold, a first reduced speed request message is then generated, it is used to reduce the downlink transmission data rate between the relay station and the mobile terminal to the request of relay station 2 belonging to the mobile terminal 1；
First dispensing device 102, for the first reduced speed request message to be sent into the relay station 2.
According to the specific embodiment of the present invention there is provided a kind of first control device for being used to carry out downlink traffic control in relay station, as shown in fig. 6, the first control device 20 includes：Second judgment means 200, for judging whether predetermined condition meets；
Second generating means 201, for when the predetermined condition is met, a second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the request of relay management equipment 3 belonging to the relay station 2；Second dispensing device 202, for the second reduced speed request message to be sent into the relay management equipment 3.
Preferably, the first control device 20 also includes：Determining device 203, for when second judgment means 200 judge that the predetermined condition is met, at least one mobile terminal to be determined in each mobile terminal serviced by the relay station 2；
Second generating means 201 are additionally operable to：The second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate associated with least one described mobile terminal between the relay management equipment and the relay station to the relay management device request.
Preferably, the second judgment means 20 in the first control device 20 are used for：Judge whether the residual capacity relayed during descending Slow is deposited of the relay station 2 is less than or equal to second capacity threshold, if the residual capacity relayed during descending Slow is deposited of the relay station 2 is less than or equal to second capacity threshold, judge that the predetermined condition is met.
Preferably, second judgment means 200 are additionally operable to：Judge whether to receive one or more
The first reduced speed request message that mobile terminal is sent, wherein every the first reduced speed request message is used to ask the relay station to reduce the downlink transmission data rate between the relay station and corresponding mobile terminal, if receiving the first reduced speed request message that one or more mobile terminals are sent, judge that the predetermined condition is met.
Preferably, the second judgment means 200 are additionally operable to：If receiving the first reduced speed request message that one or more mobile terminals are sent, then determine whether whether the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, if the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, judge that the predetermined condition is met.
Preferably, the determining device 203 is used for：One or more of mobile terminals are defined as at least one described mobile terminal.
According to still another embodiment of the invention there is provided being used to carry out the second control device of downlink traffic control in a kind of relay management equipment in wireless relay network, as shown in fig. 7, the second control device 30 including：
Reception device 300, for receiving the second reduced speed request message from a relay station 2, the second reduced speed request message is used to ask to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management equipment 3；
Processing unit 301, for based on the second reduced speed request message, reducing the downlink transmission data rate between the relay management equipment and the relay station.
Preferably, the second reduced speed request message indicates at least one mobile terminal in each mobile terminal that the relay station 2 is serviced；The processing unit 301 is additionally operable to：Based on the second reduced speed request message, the downlink transmission data rate associated with least one mobile terminal between the relay management equipment and the relay station is reduced.The specific embodiment of the present invention is described above.It is to be appreciated that the present invention is not limited to the above specific embodiments, those skilled in the art can make various deformations or amendments within the scope of the appended claims.
Claims (1)
- Claims1. it is used for the stream control servicing unit for aiding in downlink traffic to control in a kind of mobile terminal in wireless relay network, including：First judgment means, for judge the user equipment downlink Slow of the mobile terminal deposit in residual capacity whether be less than or equal to first capacity threshold；First generating means, if the residual capacity in being deposited for the user equipment downlink Slow is less than or equal to first capacity threshold, a first reduced speed request message is then generated, it is used to reduce the downlink transmission data rate between the relay station and the mobile terminal to the mobile terminal affiliated relay station request；First dispensing device, for the first reduced speed request message to be sent into the relay station.2. a kind of first control device for being used to carry out downlink traffic control in relay station, including：Second judgment means, for judging whether predetermined condition meets；Second generating means, for when the predetermined condition is met, a second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request belonging to the relay station；Second dispensing device, for the second reduced speed request message to be sent into the relay management equipment.3. first control device according to claim 2, wherein, in addition to：Determining device, for when second judgment means judge that the predetermined condition is met, by the relay station month good business each mobile terminal in determine at least one mobile terminal；Second generating means are additionally operable to：- generation the second reduced speed request message, the second reduced speed request message is used to reduce the downlink transmission data rate associated with least one described mobile terminal between the relay management equipment and the relay station to the relay management device request.4. first control device according to claim 3, wherein, second judgment means are used for：- judge the relay station the descending Slow of relaying deposit in residual capacity whether be less than or equal to second capacity threshold, if the descending Slow of relaying of the relay station deposit in residual capacity be less than or equal to this During two capacity thresholds, then judge that the predetermined condition is met.5. first control device according to claim 3, wherein, second judgment means are additionally operable to：- judge whether to receive the first reduced speed request message that one or more mobile terminals are sent, wherein every the first reduced speed request message is used to ask the relay station to reduce the downlink transmission data rate between the relay station and corresponding mobile terminal, if receiving the first reduced speed request message that one or more mobile terminals are sent, judge that the predetermined condition is met.6. first control device according to claim 5, wherein, second judgment means are additionally operable to：If-receive the first reduced speed request message that one or more mobile terminals are sent, then determine whether whether the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, if the residual capacity that the descending Slow of relaying of the relay station is deposited is less than or equal to the 3rd capacity threshold, judge that the predetermined condition is met.7. the first control device according to claim 5 or 6, wherein, the determining device is used for：- one or more of mobile terminals are defined as at least one described mobile terminal.8. it is used for the second control device for carrying out downlink traffic control in a kind of relay management equipment in wireless relay network, including：Reception device, for receiving the second reduced speed request message from a relay station, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request；Processing unit, for based on the second reduced speed request message, reducing the downlink transmission data rate between the relay management equipment and the relay station.9. second control device according to claim 8, wherein, the second reduced speed request message indicates at least one mobile terminal in each mobile terminal that the relay station is serviced；The processing unit is additionally operable to：- the second reduced speed request message is based on, reduce the downlink transmission data rate associated with least one mobile terminal between the relay management equipment and the relay station.10. a kind of method for being used to aid in downlink traffic to control in mobile terminal in wireless relay network, comprises the following steps：A. judge the user equipment downlink Slow of the mobile terminal deposit in residual capacity whether be less than or equal to first capacity threshold；If the residual capacity during B. the user equipment downlink Slow is deposited is less than or equal to first capacity threshold, a first reduced speed request message is then generated, it is used to reduce the downlink transmission data rate between the relay station and the mobile terminal to the mobile terminal affiliated relay station request；C. the first reduced speed request message is sent to the relay station.11. a kind of method for being used to carry out downlink traffic control in relay station, comprises the following steps：I. judge whether predetermined condition meets；III. when the predetermined condition is met, a second reduced speed request message is generated, the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request belonging to the relay station；IV. the second reduced speed request message is sent to the relay management equipment.12. method according to claim 11, wherein, also include after the step I and before the step III：II. when the predetermined condition is met, at least one mobile terminal is determined in each mobile terminal serviced by the relay station；The step III also includes：- generation the second reduced speed request message, the second reduced speed request message is used to reduce the downlink transmission data rate associated with least one described mobile terminal between the relay management equipment and the relay station to the relay management device request.13. method according to claim 12, wherein, the step I includes：11. judge whether the residual capacity relayed during descending Slow is deposited of the relay station is less than or equal to second capacity threshold or receives the first reduced speed request message that one or more mobile terminals are sent；If 12. the residual capacity during the descending Slow of relaying of the relay station is deposited is less than or equal to second capacity threshold, or receiving the first reduced speed request message sent from one or more mobile terminals, then judge that the predetermined condition is met.14. it is used to carry out downlink traffic control in a kind of relay management equipment in wireless relay network The method of system, comprises the following steps：0. receives the second reduced speed request message from a relay station, and the second reduced speed request message is used to reduce the downlink transmission data rate between the relay management equipment and the relay station to the relay management device request；P. the second reduced speed request message is based on, the downlink transmission data rate between the relay management equipment and the relay station is reduced.15. method according to claim 14, wherein, the second reduced speed request message indicates at least one mobile terminal in each mobile terminal that the relay station is serviced；The step P also includes：- the second reduced speed request message is based on, reduce the downlink transmission data rate associated with least one mobile terminal between the relay management equipment and the relay station.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/CN2009/073286 WO2011020228A1 (en) | 2009-08-17 | 2009-08-17 | Device and method for controlling downlink flow in user equipment, relay node and evolved universal terrestrial radio access network nodeb |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565718A (en) * | 2018-11-15 | 2019-04-02 | 北京小米移动软件有限公司 | Transmit the method and device of message |
| CN112218339A (en) * | 2020-09-30 | 2021-01-12 | 三维通信股份有限公司 | Relay transmission scheduling method and device, storage medium and electronic equipment |
| CN118233003A (en) * | 2024-05-27 | 2024-06-21 | 微网优联科技(成都)有限公司 | System and method for monitoring rate of optical network access equipment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI106497B (en) * | 1999-01-15 | 2001-02-15 | Nokia Networks Oy | Flow control method in communication system |
| US7106696B1 (en) * | 2001-08-31 | 2006-09-12 | Juniper Networks, Inc. | Systems and methods for limiting the rates of data to/from a buffer |
| US7185067B1 (en) * | 2002-08-27 | 2007-02-27 | Cisco Technology, Inc. | Load balancing network access requests |
| CN1333605C (en) * | 2003-08-22 | 2007-08-22 | 华为技术有限公司 | Method for controlling service transmitting speed ratio of 3G mobile communication system |
| JP2006279612A (en) * | 2005-03-29 | 2006-10-12 | Ntt Docomo Inc | Transmission speed control method, mobile station and radio circuit control station |
| CN100463378C (en) * | 2005-05-18 | 2009-02-18 | 大唐移动通信设备有限公司 | Channel rate adjusting method for packet data service of general mobile communication system |
| US7961621B2 (en) * | 2005-10-11 | 2011-06-14 | Cisco Technology, Inc. | Methods and devices for backward congestion notification |
| WO2008047727A1 (en) * | 2006-10-17 | 2008-04-24 | Panasonic Corporation | Communication apparatus and communication method |
-
2009
- 2009-08-17 WO PCT/CN2009/073286 patent/WO2011020228A1/en active Application Filing
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109565718A (en) * | 2018-11-15 | 2019-04-02 | 北京小米移动软件有限公司 | Transmit the method and device of message |
| CN109565718B (en) * | 2018-11-15 | 2023-11-17 | 北京小米移动软件有限公司 | Method and device for transmitting message |
| US11997542B2 (en) | 2018-11-15 | 2024-05-28 | Beijing Xiaomi Mobile Software Co., Ltd. | Method and device for message transmission |
| CN112218339A (en) * | 2020-09-30 | 2021-01-12 | 三维通信股份有限公司 | Relay transmission scheduling method and device, storage medium and electronic equipment |
| CN118233003A (en) * | 2024-05-27 | 2024-06-21 | 微网优联科技(成都)有限公司 | System and method for monitoring rate of optical network access equipment |
| CN118233003B (en) * | 2024-05-27 | 2024-07-23 | 微网优联科技(成都)有限公司 | System and method for monitoring rate of optical network access equipment |
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| WO2011020228A1 (en) | 2011-02-24 |
| CN102474896B (en) | 2016-06-01 |
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