CN102714797B - Method and apparatus for allocating processing resources for machine to machine communication - Google Patents
Method and apparatus for allocating processing resources for machine to machine communication Download PDFInfo
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- CN102714797B CN102714797B CN201080060805.5A CN201080060805A CN102714797B CN 102714797 B CN102714797 B CN 102714797B CN 201080060805 A CN201080060805 A CN 201080060805A CN 102714797 B CN102714797 B CN 102714797B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/20—Selecting an access point
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- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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Abstract
A method and an apparatus for allocating processing resources for a machine to machine communication in a base station are designed in the present invention, wherein the base station can be used in a specific area, or be used to construct a network solely for machine to machine application. The base station determines the proportion relationship between the control signal and the service data, according to the traffic model of the machine to machine communication, or according to the real-time traffic information of the machine to machine communication, then allocates reasonably the processing resources for the control signal and the service data according to the proportion relationship. When the number of the messages processed by the control plane is much larger than the number of the messages of the control plane of the communication of the ordinary human to human user terminals or the human to machine user terminals, the base station allocates more processing resources for the control plane. Therefore, compared with the universal base station mainly serving the human to human user terminals, the base station specially serving the machine to machine communication can improve the capability of the system, save the resources of transmission, and improve observably the cost performance.
Description
Technical field
The present invention relates to radio communication, particularly relate to machine to machine radio communication in LTE.
Background technology
The feature of traditional communication having people to participate in is the application run is not specific.Such as, user is by the input equipment of user terminal, and such as keyboard, mouse, board etc., select to browse webpage, play video etc., thus initiated different application.Accordingly, the communication (Machine to Machine Communication, M2M communicate) of machine to machine is carried out between entity device, must not need the data communication mutual with people.M2M communication is with the difference of the model of existing man-machine interaction:
-Xin's or different market application scenarios;
-lower cost;
-potential a large amount of machine communication terminal;
The most portfolio of-each machine terminal is less.
Therefore, M2M communicates a feature or application that may become in IMT-Advanced.The viewpoint that the development of mobile operator VzW to M2M of the U.S. is held is more radical, and think in 2015, the type distributes of LTE mobile terminal is machine terminal: user terminal=3: 1, M2M terminal ratio reaches 75%.Conservative estimation, when the extensive ripe commercialization of LTE, M2M will occupy about 30% share in all terminals.
M2M communication, as new sector application, has its specific traffic model, specific service quality (Quality of Service, QoS) demand, also may have the features such as specific position or Annual distribution.
M2M communication, as new business, started to occur, but ratio is little, does not consider separately at 2G/3G.In the LTE epoch in future, M2M will occupy key player, but in the scheme of design eNB and E-UTRAN (Evolved Universal Terrestrial Radio Access Network) networking, existing scheme just pays close attention to the statistical nature of whole network, the mobile phone unification that M2M machine terminal communicates with person to person is treated, do not consider the feature of M2M very well, the distribution of process resource is all fixing, according to common H2H communication scheme.Such as, the process resource that chain of command takies is less than the process resource shared by user data face, thus the state causing chain of command limited, thus cause mean data rate to reduce, average packet length reduces.
Summary of the invention
The present invention designs a kind of customization eNB being exclusively used in M2M, can use in particular locality, or applies independent networking for M2M, compare the universal eNB being mainly H2H (human to human) and serving, power system capacity 10 times-80 times can be improved, save transfer resource, significantly improve cost performance.Wherein, the traffic model that base station communicates according to machine to machine, or according to the real-time flow information of machine to machine communication, determine the proportionate relationship between control signal and business datum, then be reasonably control signal and business datum allocation process resource according to this proportionate relationship, when the message number of chain of command process is much larger than common people to people's user terminal or people to the message number of the chain of command of machine customer terminal communication, more process resource for chain of command distributes.
According to a first aspect of the invention, provide a kind of in the base station of LTE cordless communication network for the method for machine to machine communication service, wherein, comprise the following steps: the control signal and the proportionate relationship of business datum that obtain machine to machine communication; According to the described proportionate relationship of described control signal and described business datum, distribute for described control signal and described business datum and process resource accordingly.
Preferably, base station, by estimating the traffic model of described machine to machine communication, obtains the described proportionate relationship of described control signal and described business datum.
According to a second aspect of the invention, provide a kind of in the base station of LTE cordless communication network for the treating apparatus for machine to machine communication service, wherein, comprising: acquisition device, for obtaining control signal and the business datum proportionate relationship of the communication of described machine to machine; Distributor, for the described proportionate relationship according to described control signal and described business datum, distributes for control signal and business datum and processes resource accordingly.
Preferably, this acquisition device also for: according to the traffic model estimating the communication of described machine to machine, obtain the described proportionate relationship of described control signal and described business datum.
Technical scheme of the present invention has taken into full account the following characteristics of M2M terminal:
1. most of M2M terminal does not have mobility or seldom movement;
2., based on the typical traffic model of M2M application, the processing load of the chain of command of eNB is very large, and user face data amount is very little, similar short message service, and upstream data is obviously more than descending.Because M2M terminal, such as, comprise the sensor in Internet of Things, be mainly used in reporting to network side the data that this sensor gathers, therefore, in M2M communication, upstream data obviously more downlink data;
3.QoS requires lower, and preset carrying (Default Bearer) and generally can satisfy the demand, dispatch delay can be larger;
4.M2M be generally sector application, there is its specific region, if a particular locality (as colliery, harbour, oil field), taking the M2M that resource is less, qos requirement is lower is main application, so be mainly and communicate between men and traditional eNB of design can not well satisfy the demand: chain of command will have performance bottleneck, user face resources idle, descending idle more, equipment cost performance is low.
5. in a specific region (as colliery, harbour, oil field), many M2M communication occurs in same eNB, and data are wastes by EPC.
Adopt technical scheme of the present invention, can power system capacity be improved, save transfer resource, significantly improve cost performance.
Accompanying drawing explanation
By reading the detailed description done non-limiting example done with reference to the following drawings, above and further feature, object and advantage of the present invention will become more apparent:
Fig. 1 shows the network topology structure schematic diagram according to a specific embodiment of the present invention;
Fig. 2 shows the systems approach flow chart according to a specific embodiment of the present invention;
It is proportionally the schematic diagram of control signal and business datum allocation process resource according to a specific embodiment of the present invention that Fig. 3 shows;
Fig. 4 shows the device block diagram according to a specific embodiment of the present invention.
In accompanying drawing, identical or similar accompanying drawing mark represents identical or similar parts.
Detailed description of the invention
Fig. 1 shows the network topology structure schematic diagram according to a specific embodiment of the present invention.Wherein, base station 1 is arranged in LTE cordless communication network.Terminal device 2a and 2b is machine to machine terminal equipment.Such as terminal device 2a and 2b can be sensor.Also show the user terminal of common people to people in Fig. 1, such as, mobile phone terminal 2c, in the present embodiment, base station 1 does not provide service to these mobile phone terminals 2c, and mobile phone terminal 2c is served by other base stations.
Fig. 2 shows the systems approach flow chart according to a specific embodiment of the present invention.
First, in step S20, base station 1 is to its administrative Cell Broadcast CB cell identity information, so that the terminal device of machine to machine can access this community, but common people such as, to the user terminal of people, mobile phone, can not access.
Below, adopt household base station technology for base station 1, step S20 is described.
Such as, base station 1 is to Universal Terrestrial wireless access network cellular global identity (the E-UTRAN Cell GlobalIdentifier of its administrative Cell Broadcast CB evolution, ECGI), closed user group mark (closed subscriber group ID, CSG ID) is contained in this mark.The concept of so-called closed user group, namely certain user and certain operator contract and install Home eNodeB at oneself, and this user wishes that Home eNodeB provides service to kinsfolk and some specific visiting guests etc.For this requirement of Home eNodeB, 3GPP proposes to adopt the concept of closed user group to conduct interviews control at Release8 version.Closed user group refers to a group contracted user allowing the one or more specific cell of access, be limited, with good conditionsi during one or more community access user here, and normal cellular community can allow all legal contracted user and roamer's access of operator.And same user can belong to multiple closed user group, each closed user group identified by a closed user group ID, UE safeguards the closed user group ID list (allowing CSG ID list) of a closed user group belonging to it, and the CSG cell that other CSG ID outside this list comprise is inaccessible for this UE.And each CSG cell broadcasts a CSG ID, the member of the closed user group that this CSG ID identifies can access this community.Therefore, namely this CSG ID is also used to indicate the indication information of the community that base station 1 allows machine to machine terminal equipment access base station 1 administrative.
Correspondingly, terminal device 2a saves the group identification list of the closed user group that it adds, and also, this list illustrates the member which CSG group terminal device 2a is, in other words, terminal device 2a can be linked in the closed user group of serving which base station.After receiving at terminal device 2a the cell identity information broadcasted base station 1, in the step s 21, the cell list that terminal device 2a accesses according to the cell identity information obtained and the permission prestored, judges whether jurisdiction district, base station 1 allows machine to machine terminal equipment 2a to access.Such as, terminal device 2a extracts closed user group mark CSG ID from the cell identity information received by base station 1, and then in the permission CSG ID list to prestore at terminal device 2a, search the CSG ID of base station 1, if have found the CSG ID of base station 1 in the permission CSG ID list prestored, then represent that terminal device 2a is the member of the administrative CSG in base station 1, therefore in step S22, terminal device 2a can the administrative community of access base station 1, also namely, terminal device 2a can reside in administrative community, base station 1.
In the embodiment of a change, such as, common user terminal, such as, cell phone user terminal 2c may also have received the cell identity information broadcasted from base station 1, in step S21 ', because there be not the CSG ID corresponding with base station 1 in user terminal 2c, in fact, common user terminal 2c may not belong to any closed user group, therefore, user terminal 2c judges whether jurisdiction district, base station 1 allows machine to machine terminal equipment 2c to access.Therefore, base station 1 does not allow this user terminal 2c to reside in administrative community, base station 1, and also, in step S22 ', user terminal 2c can not reside in administrative community, base station 1.
More than utilize the technology of Home eNodeB, an embodiment of the invention are specifically described, in this manner, only need 3-10 this type of base station, namely the macrocell of bulk zone is provided to cover continuously, selected and reselecting parameters by the handoff parameter and community that arrange community, the handover between cells that the machine to machine terminal made is only administrative in this kind of base station, and only reside in this type of community, also allow people to people's and people can not be switched to this type of community to the terminal of machine, this type of community can not be resided in.This is the LTE wireless network of an independently special machine to machine in logic, do not affect people to people's and people to the use of the terminal of machine.
Then, in step S23, base station 1 obtains the control signal of machine to machine communication and the proportionate relationship of business datum.
Base station 1 by estimating the traffic model of machine to machine communication, can obtain the described proportionate relationship of control signal and described business datum.
In one embodiment, base station 1 by the typical traffic model of analytic engine to machine communication, can obtain the described proportionate relationship of control signal and described business datum.
First analytic engine is to a typical traffic model of machine communication, in this traffic model, do not consider video monitoring.It will be understood by those skilled in the art that if consider video monitoring, need to revise the parameter in this traffic model, but principle be identical:
Busy hour call attempt=10 time;
Upstream packet number=1 of call transmission, packet size=1000Byte;
Downlink grouped number=1 of call transmission, packet size=50Byte;
Wherein about 70% calling initiated for mobile terminal.Only need to set up default bearer in communication process, do not need to set up dedicated bearer.When only when hot zones uses, machine is to machine communication, switching proportion is very low, estimates to be about 1%.Even if when being commonly used, because data volume is little, call holding time is very short, and switching proportion is still very low, estimates lower than 5%.
The typical traffic model communicated according to above-mentioned machine to machine and the related specifications of 3GPP LTE, suppose that a community supports that 400 are activated machine to machine terminal equipment, also be, each community is supported that 400 machine terminal equipment are set up with base station 1 simultaneously and is communicated, there are 3 such communities base station 1, based on content release timer=3 second of flow, still do not have more than 3 seconds data to transmit after connection establishment and just discharge this connection yet.Average call duration is 3.68 seconds, then the telephone traffic of each machine to machine terminal equipment is about 0.01 Ireland (Erl).Suppose 2% percent of call lost, by inquiry Erlang B table, 1093 Ireland can be supported in base station 1, and therefore more than 100,000 machine to machine terminal equipment can be supported in base station 1.Wherein, Erlang B shows also i.e. Er1B table, reflects the relation between telephone traffic, the number of channel and the percent of call lost.The percent of call lost that usual urban district requires is 2%, and suburb is 5%.Usually, at calling line number, when also namely the number of channel is determined, the percent of call lost is higher, and telephone traffic is larger.It is 1 Ireland that a channel has been otherwise fully engaged the telephone traffic produced for hour.
Therefore, according to above-mentioned traffic model, the chain of command estimating base station 1 will at Uu, S1, and the control signal message number of X2 interface process per second is about 4000, and wears wide for 43.5kbps DL, 869.6kbps UL at an intra-cell users at data surface.Compare each community and support that 400 people are to the base station of people's mobile phone, the chain of command load of base station 1 about increases to original 4 times, but user face DL speed is reduced to about 1/300, UL original speed is reduced to original about 1/7.Will be understood that, the message of base station 1 handled by chain of command is control signal, base station 1 is business datum in the data of data surface process, also be, 4000 correspondences in above-mentioned example number of control signal, and the corresponding message transmission rate of business datum of 43.5kbps and 869.6kbps.Therefore, in this example embodiment, the proportionate relationship of control signal and business datum can be expressed as base station 1 relative to original traditional base station, and chain of command load about increases to original 4 times, and user face downstream rate is reduced to original about 1/300, upstream rate is reduced to original about 1/7.
For improving power system capacity, support more machine to machine terminal equipment, compare traditional universal base station, need the chain of command for base station 1 to distribute more physical resource, suppose that a community supports that 1200 are activated machine to machine terminal, when other conditions are constant, about 3585 Ireland can be supported in base station 1, therefore, can support the terminal device of 350,000 machine to machine in base station 1, therefore the chain of command of base station 1 about needs process per second 12000 interface messages.
By optimizing user data surface, can further improve capacity.Suppose tdd systems 20M bandwidth altogether, adopt TDD DL/UL Config=0, special subframe Config=5, for Physical Random Access Channel and Physical Uplink Control Channel have reserved enough resources, and suppose that each Transmission Time Interval has 30 machine to machine terminal equipment to be scheduled, if maximum permission postpones for 100ms, adopt the simplest fair samsara scheduling, also be, adopt the mode of round-robin, the every 100ms of each machine to machine terminal equipment is scheduled once, 3000 excited users can be supported in a community, when supposing that other prerequisites are constant, about 8990 Ireland can be supported in base station 1, thus the about 880,000 machine to machine terminal equipment of support, now, the chain of command of base station 1 about needs process per second 30000 interface messages, user face downstream rate is about 326.1kbps, upstream rate is 6521.7kbps.Compare traditional each community and support that 400 people are to the universal base station of people's mobile phone, the chain of command load of base station 1 about increases to original 30 times, but user face upstream rate only increases about 20%, and downstream rate still reduces to about 1/40.Will be understood that, the interface message of base station 1 handled by chain of command is control signal, base station 1 is business datum in the data of data surface process, also be, 30000 correspondences in above-mentioned example number of control signal, and the corresponding message transmission rate of business datum of 326.1kbps and 6521.7kbps.Therefore, in this example embodiment, the proportionate relationship of control signal and business datum can be expressed as base station 1 relative to original traditional base station, and chain of command load about increases to original 30 times, and user face downstream rate is reduced to original about 1/40, upstream rate adds about 20%.
Above discuss when base station 1 supports 400 machine to machine terminal equipment activated respectively respectively, 1200 activate machine to machine terminal equipment and 3000 activate machine to machine terminal equipment time, the proportionate relationship between the control signal of base station 1 and business datum.Certainly, it will be appreciated by those skilled in the art that, in the LTE communication system of reality, the number of the machine to machine terminal equipment of the activation that base station 1 is supported is not limited to above three cited examples, those skilled in the art can according to the network design parameter of reality and network configuration cases, set up business model, and obtain the proportionate relationship of corresponding control signal and business datum.
The above-mentioned scheme of distributing the process resource of base station according to traffic model, it is a kind of processing resource allocation scheme of static state, in another embodiment, in the scheme of process resource of distributing base station according to traffic model, step S20-step S22 is omissible, also namely, the process resource of base station is directly distributed in base station 1 according to traffic model, and does not need to reside in premised in base station 1 by terminal device.Certainly, in another embodiment, before step S23 also can occur in step S20-step S22, also be, base station 1 is first is control signal and business datum allocation process resource according to traffic model, and then broadcast cell identification information, for accessing the terminal device of machine to machine.
Below, in the embodiment of a change, do not need to derive traffic model, the control signal of Real-Time Monitoring base station 1 and the flow of business datum can be passed through in base station 1, obtain the proportionate relationship of control signal and business datum, thus reasonably distribute the process resource of base station, because need the flow of detection control face and data surface in real time, so step S20-step S22 is required, also, first machine to machine terminal equipment 2a or 2b will reside in base station 1.
Such as, base station 1 can chain of command Uu in a period of time, the S1 of base stations detected 1, the message of X2 interface number, and the message transmission rate of user face in this at the same time section of base stations detected 1, such as, the summation of the message transmission rate of uplink and downlink, thus the proportionate relationship obtaining control signal and business datum.
Then, in step s 24 which, the control signal of base station 1 according to acquisition and the proportionate relationship of business datum, distribute for control signal and business datum and process resource accordingly.Such as, multiple polycaryon processor can be distributed for the chain of command of base station 1, or realize on digital signal processor or field programmable gate array, or realize on the commercial server that one or more is powerful.
First with the traffic model of base station 1 by the communication of estimation machine to machine, the proportionate relationship getting control signal and business datum is that example is described.
Such as, support the traffic model of 400 excited users in base station 1 under, the chain of command load of base station 1 about increases to original 4 times, but user face DL speed is reduced to about 1/300, UL original speed is reduced to original about 1/7; Therefore, be correspondingly the process resource that chain of command distributes, all to serve common people many to the process resource of the base station of the user terminal of people than existing to comprise processor, internal memory and bandwidth.Such as, if the processor distributed for the chain of command of original general base station is single core processor, the processor then distributed for the chain of command of the base station 1 at machine to machine communication network can be dual core processor, four core processors or even eight core processors, as long as match with the load of the control signal handled by it.In addition, base station 1 is also for business datum distribution processes resource accordingly, such as, the process resource that base station 1 is distributed for business datum and the process resource that existing general base station distributes for business datum maintain an equal level, or are slightly less than the process resource that existing general base station distributes for business datum.
In the embodiment of a change, base station 1 can also, according to control signal, ratio between uplink business data and downlink service data, be control signal, uplink business data and downlink service data allocation process resource.
With the machine to machine terminal equipment that base station 1 supports 3000 to activate, the chain of command load of base station 1 about increases to original 30 times, but user face upstream rate only increases about 20%, and downstream rate still reduces to about 1/40 for example and is described.Such as, if the processor distributed for the chain of command of original general base station is single core processor, processor then for distributing in the base station 1 of machine to machine communication network can be four core processors or even eight core processors ... or even 30 core processors, as long as match with the load of the control signal handled by the chain of command of this base station.In addition, base station 1 also processes resource accordingly for uplink business data and downlink service data distribute, such as, the process resource that base station 1 is distributed for business datum and the process resource that existing general base station distributes for business datum maintain an equal level, or be slightly less than the process resource that existing general base station distributes for business datum, and by the major part in the process resource of distributing for business datum, such as 70% distributes to uplink business data, remaining part, such as 30% reallocation is to downlink service data.It will be understood by those skilled in the art that 70% in the ratio of above-mentioned distribution and 30% is only example, in the operating process of reality, according to the proportionate relationship of concrete control signal and business datum, proportionally can be configured.What Fig. 3 showed an example is proportionally the schematic diagram of control signal and business datum allocation process resource.Box indicating maximum in Fig. 3 for the ability of the process resource that control signal distributes the strongest, as can be seen from Figure 3, secondary large box indicating is uplink user face, also namely the upstream data face process resource of distributing secondly, the process resource that minimum box indicating distributes for downlink user face is minimum.
In the embodiment of a change, with in step S23, the real-time control signal of monitoring base station 1 and the flow of business datum, the proportionate relationship obtaining control signal and business datum is example, is described step S24.
Such as, be first chain of command and user face allocation process resource, the strategy of this original allocation both can be distribute according to the business model of statistics, also can be distribute randomly.Such as, base station 1 one has 32 core processors, and being that chain of command distributes 2 core processors when base station 1 is initial, is user data face 2 core processor.Then, base station 1 is again according to the flow information of monitoring in real time, such as, base station 1 is by the interface of each chain of command of monitoring, be found to be 2 core processors distributed base station 1 when can not satisfy the demand, dynamically more process resource for chain of command distributes again, such as, then distribute 2 core processors for the chain of command of base station 1.The program can realize the dynamic assignment processing resource, effectively improves the utilization rate of the process resource in use.
Certainly, except the mode of above-mentioned logic networking, in another embodiment, also special band networking can be adopted.Even if when supposing only to use 5M dedicated bandwidth, 5-10 machine to machine terminal equipment is had to be scheduled in each Transmission Time Interval, maximum delay time is 100-200ms, 1000 excited users can be supported in a community, about 28 general-purpose families can be supported in a base station, as long as 4 base stations just can form the private network of 1,000,000 machine to machine terminal equipment, there is high cost performance.
In specific region, when two machine to machine terminal devices communicatings in the community that base station 1 is administrative, such as, terminal device 2a and 2b is administrative by base station 1, and their data link without core net, directly can complete exchange in inside, base station 1.Particularly: if two machine to machine terminal equipment are administrative by same base station, evolution block core will indicate the mark of this base station calling subscribe and called subscriber, and corresponding radio bearer (E-UTRAN Radio Access Bearer), base station 1 is after the local exchange instruction receiving core net, and the data flow for these two terminal devices is directly set up to exchange and connected in base station.Between base station 1 and core net, still retain default bearing, but base station 1 is not at this default bearing transmitting data.In addition, Temporary Mobile Subscriber mark and the corresponding table between Cell Radio Network Temporary Identifier/Identity, Cell-RNTI is also retained in base station 1.
Fig. 4 shows the device block diagram according to a specific embodiment of the present invention.Wherein, treating apparatus 10 is arranged in base station 1, and treating apparatus 10 comprises acquisition device 100 and distributor 101, and alternatively, treating apparatus 10 also comprises broadcaster (not shown).
First, the Cell Broadcast CB cell identity information that broadcaster is administrative to base station 1, so that the terminal device of machine to machine can access this community, but common people such as, to the user terminal of people, mobile phone, notebook computer etc., can not access.
Below, adopt household base station technology for base station 1, broadcaster is described.
Such as, broadcaster is to Universal Terrestrial wireless access network cellular global identity (the E-UTRAN Cell Global Identifier of its administrative Cell Broadcast CB evolution, ECGI), closed user group mark (closed subscriber group ID, CSG ID) is contained in this mark.The concept of so-called closed user group, namely certain user and certain operator contract and install Home eNodeB at oneself, and this user wishes that Home eNodeB provides service to kinsfolk and some specific visiting guests etc.For this requirement of Home eNodeB, 3GPP proposes to adopt the concept of closed user group to conduct interviews control at Release8 version.Closed user group refers to a group contracted user allowing the one or more specific cell of access, be limited, with good conditionsi during one or more community access user here, and normal cellular community can allow all legal contracted user and roamer's access of operator.And same user can belong to multiple closed user group, each closed user group identified by a closed user group ID, UE safeguards the closed user group ID list (allowing CSG ID list) of a closed user group belonging to it, and the CSG cell that other CSG ID outside this list comprise is inaccessible for this UE.And each CSG cell broadcasts a CSG ID, the member of the closed user group that this CSG ID identifies can access this community.Therefore, namely this CSG ID is also used to indicate the indication information of the community that base station 1 allows machine to machine terminal equipment access base station 1 administrative.
Correspondingly, terminal device 2a saves the group identification list of the closed user group that it adds, and also, this list illustrates the member which CSG group terminal device 2a is, in other words, terminal device 2a can be linked in the closed user group of serving which base station.After receiving at terminal device 2a the cell identity information broadcasted base station 1, the cell list that terminal device 2a accesses according to the cell identity information obtained and the permission prestored, judges whether jurisdiction district, base station 1 allows machine to machine terminal equipment 2a to access.Such as, terminal device 2a extracts closed user group mark CSG ID from the cell identity information received by base station 1, and then in the permission CSG ID list to prestore at terminal device 2a, search the CSG ID of base station 1, if have found the CSG ID of base station 1 in the permission CSG ID list prestored, then terminal device 2a judges that terminal device 2a is the member of the administrative CSG in base station 1, therefore terminal device 2a is by community administrative for terminal device 2a access base station 1, also namely, terminal device 2a can reside in administrative community, base station 1.
In the embodiment of a change, such as, common user terminal, such as, cell phone user terminal 2c may also have received the cell identity information broadcasted from base station 1, but in user terminal 2c, do not have the CSG ID corresponding with base station 1, in fact, common user terminal 2c may not belong to any closed user group, and therefore, user terminal 2c judges that base station 1 does not allow this user terminal 2c to reside in administrative community, base station 1.
Then, the acquisition device 100 of base station 1 obtains the control signal of machine to machine communication and the proportionate relationship of business datum.
Acquisition device 100 by estimating the traffic model of machine to machine communication, can obtain the described proportionate relationship of control signal and described business datum.
In one embodiment, acquisition device 100 by the typical traffic model of analytic engine to machine communication, can obtain the described proportionate relationship of control signal and described business datum.
First analytic engine is to the typical traffic model of machine communication:
Busy hour call attempt=10 time;
Upstream packet number=1 of call transmission, packet size=1000Byte;
Downlink grouped number=1 of call transmission, packet size=50Byte;
Wherein about 70% calling initiated for mobile terminal.Only need to set up default bearer in communication process, do not need to set up dedicated bearer.When only when hot zones uses, machine is to machine communication, switching proportion is very low, estimates to be about 1%.Even if when being commonly used, because data volume is little, call holding time is very short, and switching proportion is still very low, estimates lower than 5%.
The typical traffic model communicated according to above-mentioned machine to machine and the related specifications of 3GPP LTE, suppose that a community supports that 400 are activated machine to machine terminal equipment, also be, each community is supported that 400 machine terminal equipment are set up with base station 1 simultaneously and is communicated, there are 3 such communities base station 1, based on content release timer=3 second of flow, still do not have more than 3 seconds data to transmit after connection establishment and just discharge this connection yet.Average call duration is 3.68 seconds, then the telephone traffic of each machine to machine terminal equipment is about 0.01 Ireland (Erl).Suppose 2% percent of call lost, by inquiry Erlang B table, 1093 Ireland can be supported in base station 1, and therefore more than 100,000 machine to machine terminal equipment can be supported in base station 1.Wherein, Erlang B shows also i.e. Erl B and shows, and reflects the relation between telephone traffic, the number of channel and the percent of call lost.The percent of call lost that usual urban district requires is 2%, and suburb is 5%.Usually, at calling line number, when also namely the number of channel is determined, the percent of call lost is higher, and telephone traffic is larger.It is 1 Ireland that a channel has been otherwise fully engaged the telephone traffic produced for hour.
Therefore, according to above-mentioned traffic model, the chain of command that acquisition device 100 estimates base station 1 will be about 4000 in the control signal message number of Uu, S1, X2 interface process per second, and wear wide for 43.5kbps DL, 869.6kbps UL at an intra-cell users at data surface.Compare each community and support that 400 people are to the base station of people's mobile phone, the chain of command load of base station 1 about increases to original 4 times, but user face DL speed is reduced to about 1/300, UL original speed is reduced to original about 1/7.Will be understood that, the message of base station 1 handled by chain of command is control signal, base station 1 is business datum in the data of data surface process, also be, 4000 correspondences in above-mentioned example number of control signal, and the corresponding message transmission rate of business datum of 43.5kbps and 869.6kbps.Therefore, in this example embodiment, the proportionate relationship of control signal and business datum can be expressed as base station 1 relative to original traditional base station, and chain of command load about increases to original 4 times, and user face downstream rate is reduced to original about 1/300, upstream rate is reduced to original about 1/7.
For improving power system capacity, support more machine to machine terminal equipment, compare traditional universal base station, need the chain of command for base station 1 to distribute more physical resource, suppose that a community supports that 1200 are activated machine to machine terminal, when other conditions are constant, about 3585 Ireland can be supported in base station 1, therefore, can support the terminal device of 350,000 machine to machine in base station 1, therefore the chain of command of base station 1 about needs process per second I2000 interface message.
By optimizing user data surface, can further improve capacity.Suppose tdd systems 20M bandwidth altogether, adopt TDD DL/UL Config=0, special subframe Config=5, for Physical Random Access Channel and Physical Uplink Control Channel have reserved enough resources, and suppose that each Transmission Time Interval has 30 machine to machine terminal equipment to be scheduled, if maximum permission postpones for 100ms, adopt the simplest fair samsara scheduling, also be, adopt the mode of round-robin, the every 100ms of each machine to machine terminal equipment is scheduled once, 3000 excited users can be supported in a community, when supposing that other prerequisites are constant, about 8990 Ireland can be supported in base station 1, thus the about 880,000 machine to machine terminal equipment of support, now, the chain of command of base station 1 about needs process per second 30000 interface messages, user face downstream rate is about 326.1kbps, upstream rate is 6521.7kbps.Compare traditional each community and support that 400 people are to the universal base station of people's mobile phone, the chain of command load of base station 1 about increases to original 30 times, but user face upstream rate only increases about 20%, and downstream rate still reduces to about 1/40.Will be understood that, the interface message of base station 1 handled by chain of command is control signal, base station 1 is business datum in the data of data surface process, also be, 30000 correspondences in above-mentioned example number of control signal, and the corresponding message transmission rate of business datum of 326.1kbps and 6521.7kbps.Therefore, in this example embodiment, the proportionate relationship of control signal and business datum can be expressed as base station 1 relative to original traditional base station, and chain of command load about increases to original 30 times, and user face downstream rate is reduced to original about 1/40, upstream rate adds about 20%.
Above acquisition device 100 obtains when base station 1 supports the machine to machine terminal equipment of 400 machine to machine terminal equipment activated and 3000 activation respectively respectively, the proportionate relationship between the control signal of base station 1 and business datum.Certainly, it will be appreciated by those skilled in the art that, in the LTE communication system of reality, the number of the machine to machine terminal equipment of the activation that base station 1 is supported is not limited to above cited example, those skilled in the art can according to the network design parameter of reality and network configuration cases, set up business model, and obtain the proportionate relationship of corresponding control signal and business datum.
The above-mentioned scheme of distributing the process resource of base station according to traffic model, it is a kind of processing resource allocation scheme of static state, certainly, it will be understood by those skilled in the art that in being the chain of command of base station and the scheme of data surface allocation process resource according to traffic model, operation performed by acquisition device does not also rely on the result of the operation performed by broadcaster, namely, obvious sequencing relation is not had between the two, in other words yet, in this scenario, broadcaster is omissible.
Below, in the embodiment of a change, do not need to derive traffic model, the control signal of Real-Time Monitoring base station 1 and the flow of business datum can be passed through in base station 1, obtain the proportionate relationship of control signal and business datum, thus reasonably distribute the process resource of base station, because in this scenario, acquisition device 100 needs the chain of command of base stations detected and the flow of data surface in real time, therefore, broadcaster is required, and also, first machine to machine terminal equipment 2a or 2b will reside in base station 1.
Such as, acquisition device 100 can pass through the number of chain of command Uu in a period of time, the S1 of base stations detected 1, the message of X2 interface, and the message transmission rate of user face in this at the same time section of base stations detected 1, such as, the summation of the message transmission rate of uplink and downlink, thus the proportionate relationship obtaining control signal and business datum.
Then, the control signal of distributor 101 according to acquisition and the proportionate relationship of business datum, distribute for control signal and business datum and process resource accordingly.Such as, distributor 101 can distribute multiple polycaryon processor for the chain of command of base station 1, or realizes on digital signal processor or field programmable gate array, or realizes on the commercial server that one or more is powerful.
First with the traffic model of acquisition device 100 by the communication of estimation machine to machine, the proportionate relationship getting control signal and business datum is that example is described.
Such as, support the traffic model of 400 excited users in base station 1 under, the chain of command load of base station 1 about increases to original 4 times, but user face DL speed is reduced to about 1/300, UL original speed is reduced to original about 1/7; Therefore, the correspondingly distributor 101 process resource of distributing for chain of command, all to serve common people many to the process resource of the base station of the user terminal of people than existing to comprise processor, internal memory and bandwidth.Such as, if the processor distributed for the chain of command of original general base station is single core processor, the processor that the chain of command that then distributor 101 is the base station 1 at machine to machine communication network distributes can be dual core processor, four core processors or even eight core processors, as long as match with the load of the control signal handled by it.In addition, distributor 101 is also for business datum distribution processes resource accordingly, such as, the process resource that base station 1 is distributed for business datum and the process resource that existing general base station distributes for business datum maintain an equal level, or are slightly less than the process resource that existing general base station distributes for business datum.
In the embodiment of a change, distributor 101 can also, according to control signal, ratio between uplink business data and downlink service data, be control signal, uplink business data and downlink service data allocation process resource.
With the machine to machine terminal equipment that base station 1 supports 3000 to activate, the chain of command load of base station 1 about increases to original 30 times, but user face upstream rate only increases about 20%, and downstream rate still reduces to about 1/40 for example and is described.Such as, if the processor distributed for the chain of command of original general base station is single core processor, then distributor 101 for the processor distributed in the base station 1 of machine to machine communication network can be four core processors or even eight core processors ... or even 30 core processors, as long as match with the load of the control signal handled by the chain of command of this base station.In addition, distributor 101 also processes resource accordingly for uplink business data and downlink service data distribute, such as, the process resource that distributor 101 distributes for business datum and the process resource that existing general base station distributes for business datum maintain an equal level, or be slightly less than the process resource that existing general base station distributes for business datum, and distributor 101 is by the major part in the process resource of distributing for business datum, such as 70% distributes to uplink business data, remaining part, such as 30% reallocation is to downlink service data.It will be understood by those skilled in the art that 70% in the ratio of above-mentioned distribution and 30% is only example, in the operating process of reality, according to the proportionate relationship of concrete control signal and business datum, proportionally can be configured.
In the embodiment of a change, the control signal of monitoring base station 1 real-time with acquisition device 100 and the flow of business datum, the proportionate relationship obtaining control signal and business datum is example, is described distributor 101.
Such as, first distributor 101 is chain of command and user face allocation process resource, and the strategy of this original allocation both can be distribute according to the business model of statistics, also can be distribute randomly.Such as, base station 1 one has 32 core processors, and being that chain of command distributes 2 core processors when distributor 101 is initial, is user data face 2 core processor.Then, distributor 101 is again according to the flow information of monitoring in real time, such as, acquisition device 100 is by the interface of each chain of command of monitoring, be found to be 2 core processors distributed base station 1 when can not satisfy the demand, distributor 101 dynamically more processes resource for chain of command distributes again, such as, then distributes 2 core processors for the chain of command of base station 1.The program can realize the dynamic assignment processing resource, effectively improves the utilization rate of the process resource in use.
The those skilled in the art of the art can pass through research description, disclosed content and accompanying drawing and appending claims, understand and implement other changes to the embodiment disclosed.In the claims, word " comprises " element and step of not getting rid of other, and wording " one " does not get rid of plural number.In the practical application of invention, the function of the multiple technical characteristics quoted during a part possibility enforcement of rights requires.Any Reference numeral in claim should not be construed as the restriction to scope.
Claims (8)
1. a method for the Resourse Distribute in the base station of LTE cordless communication network, wherein, comprises the following steps:
A. by the flow of the monitoring control signal of described base station, uplink business data and downlink service data, described control signal, proportionate relationship between described uplink business data and described downlink service data is obtained;
B. according to described control signal, described proportionate relationship between described uplink business data and described downlink service data, resource is processed accordingly for described control signal, described uplink business data and described downlink service data distribute;
Wherein, described base station is the base station being exclusively used in machine to machine communication service.
2. method according to claim 1, wherein, also comprises before described step a:
I. broadcast cell identification information, wherein, described cell identity information comprises and is used to indicate the indication information that described base station only allows the community that base station is administrative described in machine to machine terminal equipment access.
3. method according to claim 1, wherein, also comprises after described step b:
-for the resource of described base station assigns is only for being described machine to machine communication service.
4. method according to claim 1, wherein, described process resource comprises processor, internal memory, bandwidth.
5. a treating apparatus for the Resourse Distribute in the base station of LTE cordless communication network, wherein, comprising:
Acquisition device, by monitoring the flow of the control signal of described base station, uplink business data and downlink service data, obtains described control signal, proportionate relationship between described uplink business data and described downlink service data;
Distributor, according to described control signal, described proportionate relationship between described uplink business data and described downlink service data, processes resource accordingly for described control signal, described uplink business data and described downlink service data distribute;
Wherein, described base station is the base station being exclusively used in machine to machine communication service.
6. treating apparatus according to claim 5, wherein, also comprises:
Broadcaster, for broadcast cell identification information, wherein, described cell identity information comprises and is used to indicate the indication information that described base station only allows the community that base station is administrative described in machine to machine terminal equipment access.
7. treating apparatus according to claim 5, wherein, described distributor also for, for the resource of described base station assigns is only for being described machine to machine communication service.
8. treating apparatus according to claim 5, wherein, described process resource comprises processor, internal memory, bandwidth.
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| CN105611489A (en) * | 2016-01-20 | 2016-05-25 | 深圳市金溢科技股份有限公司 | Terminal, base station and communication mechanism applied in wide area internet of things M2M (Machine to Machine) communication network |
| CN110582117B (en) * | 2018-06-08 | 2023-05-09 | 中国移动通信有限公司研究院 | Resource scheduling method, service transmission method, network side equipment and terminal |
| CN110659145B (en) * | 2019-09-05 | 2023-03-21 | 北京达佳互联信息技术有限公司 | Data detection method and device, background server and storage medium |
| CN111355805A (en) * | 2020-03-06 | 2020-06-30 | 苏州浪潮智能科技有限公司 | Network communication method, device, equipment and storage medium |
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| KR100675134B1 (en) * | 2004-09-02 | 2007-01-29 | 엘지노텔 주식회사 | Apparatus and method for scheduling variable data exchange of trunk in mobile communication system |
| US7471654B2 (en) * | 2004-12-29 | 2008-12-30 | Alcatel-Lucent Usa Inc. | Channel assignment based on service type and wireless communication environment |
| CN101026468A (en) * | 2006-02-20 | 2007-08-29 | 华为技术有限公司 | Business data transmitting method and device |
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| CN101127719B (en) * | 2007-09-27 | 2013-03-20 | 中兴通讯股份有限公司 | Indication method for wireless resource allocation of LTE system |
| CN101500312B (en) * | 2008-02-01 | 2011-06-22 | 中兴通讯股份有限公司 | Available resource allocation method |
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