CN101841776B - Communication method and device for supporting low-rate user terminal - Google Patents
Communication method and device for supporting low-rate user terminal Download PDFInfo
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- CN101841776B CN101841776B CN 201010176811 CN201010176811A CN101841776B CN 101841776 B CN101841776 B CN 101841776B CN 201010176811 CN201010176811 CN 201010176811 CN 201010176811 A CN201010176811 A CN 201010176811A CN 101841776 B CN101841776 B CN 101841776B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/121—Wireless traffic scheduling for groups of terminals or users
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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Abstract
The invention discloses a communication method and a communication device for supporting a low-rate user terminal. The method comprises the following steps of: allocating different monitoring periods for each previously allocated user group, wherein the user group comprises at least one user terminal; allocating an air interface resource to a user terminal in the user group in the current monitoring period; and performing data transmission by using the air interface resource and the user terminal in the user group in the current monitoring period. By grouping a large number of user terminals, the system resource can be grouped and allocated to the user terminals of each group in a time multiplexing mode; and therefore, the method and the device improve the utilization ratio of the system resource, support to provide services for a greater number of user terminals and reduce the processing load and the energy consumption of the user terminal.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to a kind of communication means and device of supporting low-rate user terminal.
Background technology
Adopting OFDMA (Orthogonal Frequency Division Multiplexing, OFDM) in mobile communication system, to each user terminal, no matter be domestic consumer's terminal or low-rate user terminal, all must send resource allocating message notifies it to use corresponding interface-free resources, for example, service resources and control resource.When in system, the user terminal number increases gradually, system need to send a large amount of corresponding interface-free resources of assigned resources message informing user terminal, and in order to keep the communication quality with user terminal, system also needs to carry out channel measurement and reporting measurement result for user terminal distributes a large amount of channel resources for user terminal, has taken thus a large amount of overheads.
in the prior art, in different communication systems, the design capacity of each residential quarter is different, the general support provides service simultaneously to several to tens maximum more or less a hundred user terminals, such as contained fan in gsm system can be 7-8 subscriber terminal service simultaneously, in cdma system, contained fan can be the subscriber terminal service of about 20-30 simultaneously, in the WCDMA system, contained fan can be the subscriber terminal service of about 50-60 simultaneously, in the WiMAX system of 10M bandwidth, contained fan can be the subscriber terminal service of about 80-120 simultaneously, in the LTE system of 10M bandwidth, a contained fan can be also the subscriber terminal service of about 80-120 simultaneously.In addition, the user terminal speed that can support in different communication systems is also different, and for example, in cdma system, the peak value downstream rate of a user terminal can reach 3.1Mbps, and on average the transmission rate of each user terminal is the 100Kbps left and right; In the R99 of WCDMA system version, the peak value downstream rate of a user terminal can reach 384Kbps, and on average the transmission rate of each user terminal is the 50Kbps left and right; In WCDMA system HSDPA version, the peak value downstream rate of a user terminal can reach 14.4Mbps, and on average the transmission rate of each user terminal can reach the 1Mbps left and right.Therefore, the residential quarter of existing communication system is designed for user terminal capacity and the relatively high data rate of less, and it is mainly in order to satisfy the needs of mankind's moving speech communication and mobile data services.
When the communication that present mobile communication system is applied between low-rate user terminal, M2M (Machine to Machine for example, during machine to machine) communication, the inventor finds, when there was a large amount of low-rate user terminals in present mobile communication system, the expense of system was excessive, and the level of resources utilization is low, can not give full play to the designed capacity of system, equally also reduce the user terminal number that system can hold simultaneously.
Summary of the invention
The embodiment of the present invention provides a kind of communication means and device of supporting low-rate user terminal, and existing scheme overhead is large to solve, the problem of restriction user terminal number.
For this reason, the embodiment of the present invention adopts following technical scheme: a kind of communication means of supporting low-rate user terminal comprises:
For pre-assigned each user's component is joined different listening periods, described user's group comprises at least one user terminal;
For the user terminal in the user's group that is in current monitoring period distributes interface-free resources;
User terminal in organizing with the user who is in current monitoring period by described interface-free resources carries out transfer of data.
A kind of communicator of supporting low-rate user terminal comprises:
The listening period allocation units are used to pre-assigned each user's component to join different listening periods, and described user's group comprises at least one user terminal;
The resource assignation unit is used to the user terminal in the user's group that is in current monitoring period to distribute interface-free resources;
Data transmission unit is used for carrying out transfer of data by described interface-free resources and the user terminal that the user who is in current monitoring period organizes.
As seen, the embodiment of the present invention is with a large number of users end packet, system resource is distributed to the user terminal of each user's group according to time-multiplexed mode, thereby improve the utilization ratio of system resource, support provides service for more substantial user terminal number, reduces processing load and the energy consumption of user terminal.
Description of drawings
Fig. 1 is the communication means flow chart of a large amount of low-rate user terminals of embodiment of the present invention support;
Fig. 2 is the communicator schematic diagram of a large amount of low-rate user terminals of embodiment of the present invention support.
Embodiment
The embodiment of the present invention provides a kind of communication means and device of supporting low-rate user terminal, the method or device can satisfy the communication requirement of low-rate user terminal, and under the prerequisite of the physical-layer techniques such as channel architecture of not revising existing mobile communication system, can reduce the expense of system.
Referring to Fig. 1, the communication means flow chart of a large amount of low-rate user terminals of support that provide for the embodiment of the present invention comprises the following steps:
S101: for pre-assigned each user's component is joined different listening periods, described user's group comprises at least one user terminal;
S102: for the user terminal in the user's group that is in current monitoring period distributes interface-free resources, particularly, carry out the distribution of interface-free resources by assignment message;
S103: the user terminal in organizing with the user who is in current monitoring period by described interface-free resources carries out transfer of data.
As seen, the embodiment of the present invention is divided into user's group with a large number of users terminal, communicate from user terminal in different user group at different listening periods, namely realize system resource is distributed to user terminal in each user group according to time-multiplexed mode, thereby improve the utilization ratio of system resource, support provides service for more substantial user terminal number, reduces processing load and the energy consumption of user terminal.
Need to prove, the embodiment of the present invention is applicable to the system of various low rate communications, except the M2M system, also comprise system that the person to person communicates by letter and the system of human and computer communication, as long as the user terminal in this system is not high especially to the capacity of the relative whole system of rate requirement.
Wherein, the implementation of step S102 has multiple:
(1) single assignment
Under default situations, the base station sends an assignment message for each user terminal in user's group and distributes interface-free resources.
(2) group assignment
For conserve bandwidth, the embodiment of the present invention proposes especially, the base station can configure interface-free resources by the mode of " group assignment ", the assignment of so-called group refers to, organize to each user and send an assignment message, in assignment message, specific, concrete is the interface-free resources of the distribution of each user terminal in this group, particularly, can adopt the mode of " group index+user terminal identification " to divide into the interface-free resources that each user terminal distributes, user terminal is defined as the interface-free resources of self distributing by group index and user terminal identification.If distribute interface-free resources with group assignment mode to user terminal, the base station will be notified user terminal grouping information by space interface signaling after to end packet, and at this moment, each user's group can be distinguished by group number in the base station.
In addition, preferably, above-mentioned assignment message also can send to user terminal in each user group by the bitmap mode, according to default order, each user terminal knows that it in position and the resource size of whole Resource Block, can reduce the expense of assignment message in this way effectively.
In addition, in acquiescence generally, assignment message in above-mentioned two kinds of implementations is all instant assignment message, effectively instant, article one, assignment message only distributes a certain resource of corresponding frame to use once to the user, user terminal only can take base station assigns to the resource of this user terminal after receiving assignment message, just do not return this user terminal to use in this resource of next cycle, needs to send in addition assignment message again.
The bandwidth occupancy that causes for fear of repeatedly sending assignment message, the special proposition of the embodiment of the present invention has also proposed a kind of, can adopt the mode of " continuing assignment ", namely, by arranging with user terminal, effective in the lasting a plurality of assignment periods of assignment message, for example, the interface-free resources that assignment message distributes can continue several cycles, and this situation is very common in mobile communication; Such as speech business or VoIP business, the every 20ms of voice packet sends once, when two people converse, on average everyone speak at every turn the time 500ms or more than, from the angle of system, can distribute a resource for it every 20ms (5ms is a frame, is exactly 4 frames) like this, continuous dispensing 25 times is namely more than lasting 500ms; To continuing assignment, the resource number of distribution and Cycle Length can be carried in assignment message or by agreement arranges.
Particularly, within the time period of agreement or till the interface-free resources number that distributes expired, this instant assignment message was all effectively, that is to say, continues assignment message for a user terminal, indicate the method for salary distribution of a group or a string resource.Particularly, approximately fixed cycle or the field of time period are carried by assignment message in the base station, the Cycle Length that comes the notification terminal assignment message to continue.As previously mentioned, if with organizing the assignment mode to the user terminal Resources allocation, the base station will be notified user terminal grouping information by space interface signaling in grouping, and at this moment, each user terminal group can be distinguished by group number in the base station.
The implication that continues assignment is the interface-free resources that an assignment message can a plurality of cycles of assignment, the mode of the assignment message that it is relatively instant, the expense that can save assignment message.Specifically, system can be certain piece resource of a certain frame of certain user assignment, and the cycle according to every 100 frames of then specifying allows this user fix this resource of use, 10 times altogether; Like this, from current assignment frame, suppose that current frame number is 100, this assignment message can use this piece resource of the 100th, 110,120,130,140,150,160,170,180,190 frames with regard to indicating user.One group or a string resource represent by the assignment Cycle Length field that continues assignment message and carry, are exactly generally the number of assigned resources.
Group assignment by above-mentioned introduction can effectively reduce the number of assignment message or/and continue the mode of assignment, thus further conserve bandwidth resource.
The below describes in detail to scheme with an instantiation.
1) base station is divided into different user's groups with user terminal, and each user's group comprises a user terminal at least.
The base station can be according to time sequencing, radio environment information, the end user terminal ability information of end user terminal connecting system, and self load condition of base station system etc., user terminal is divided into corresponding user's group flexibly.The size of user's group and number are determined flexibly according to the capacity specifications of the user terminal of the maximum number of system loading, current access user terminal number and system's preparation support.
User terminal is divided into corresponding user organizes mainly and completed by the base station, the information of base station self record user group gets final product, and because all resources are all distributed unitedly to user terminal by the base station, does not generally need informing user terminal.
For the common assignment mode of acquiescence, each user terminal be organized and be notified in the base station can by distinguishing the user for the time-multiplexed Sleep sleep cycle parameter of user terminal formulation of different user groups; The listening period of each group is different, and the sleep parameters of the user terminal in a user organizes is all identical; For group assignment mode, because user terminal has received the grouping information (comprising packet number) that the base station sends, therefore, the base station can be distinguished the user terminal group and notify in each user terminal group by packet number (Group No) and indicate to distinguish user terminal by group index or user terminal.
Such as, system need to support 5000 user terminals in a residential quarter, user terminal can be divided into 100 groups, each user organizes 50 user terminals;
The group number that can define 0-99 indicates respectively each user's group; Also can distinguish each user's group by definition sleep cycle parameter, such as supposing the system 5ms is a frame, take the 10s=2000 frame as an assignment period, each user's group is used the monitoring/available period of 20 frames in this assignment period, and other 99 the interior resources of the time-multiplexed current assignment period of group.
2) different listening periods is joined for each user's component in the base station, and is that user terminal in user group distributes interface-free resources by assignment message, and is utilized as interface-free resources and this user terminal that this user terminal distributes and carries out transfer of data.
User terminal in each user organizes joins in the time of resource for other components in system, the situation that can keep state of activation monitoring system message or monitoring system other residential quarters, also can enter dormancy (Sleep) state discord system and carry out alternately, thereby save energy consumption.
The base station is that user terminal distributes interface-free resources by sending assignment message, and the resource that different user groups is used is multiplexing in time, and the user terminal of each user's group can only use system assignment to the resource of oneself at special time; System can be in a periodic manner or event mode be the user terminal Resources allocation of each user's group.
For time-multiplexed understanding, illustrate as follows in the mode of single assignment: suppose that each user organizes and use 20 frame resources, 100 groups altogether, 0-19 frame resource is the 0th group of use so, and 20-39 frame resource is the 1st group of use; The rest may be inferred; Only describe the resource of present frame due to assignment message and distribute to which user terminal, so from the angle of the assignment message of eating dishes without rice or wine, the resource of each cycles 20 frame is by so time-multiplexed or shared use of many groups.
After distributing interface-free resources, the base station can be utilized as the interface-free resources of user terminal distribution and carry out transfer of data with it.
In addition, the embodiment of the present invention also provides a kind of communicator of supporting low-rate user terminal, and particularly, this device can refer to base station equipment, also can refer to be positioned at the functional entity of inside of base station, can realize by the mode of software, hardware or software and hardware combining.
See also Fig. 2, this device comprises:
Listening period allocation units 201 are used to pre-assigned each user's component to join different listening periods, and described user's group comprises at least one user terminal;
Resource assignation unit 202 is used to the user terminal that is in current monitoring period to distribute interface-free resources;
Data transmission unit 203 is used for carrying out transfer of data by described interface-free resources and the user terminal that the user who is in current monitoring period organizes.
Alternatively, said apparatus may further include, grouped element, be used for time sequencing, radio environment information, ability information of user terminal according to the user terminal connecting system, or/and the QoS of survice demand information of user terminal is divided into corresponding user's group with user terminal.
Alternatively, above-mentioned resource assignation unit 202 may further include:
First resource assignment unit is used for sending assignment message to each user terminal and distributes interface-free resources; Or
Secondary resource assignment unit is used for sending respectively assignment message to each group and distributes interface-free resources;
Described assignment message is instant effective or the lasting designated time is effective.
The embodiment of the present invention can be applicable to adopt the mobile communication system of OFDMA technology, for example the follow-up evolution system of WiMAX, LTE FDD system, LTE TDD system and these systems.
To sum up, the embodiment of the present invention is passed through a large number of users end packet, system resource is divided into groups to distribute to according to time-multiplexed mode respectively organize user terminal, thereby improve the utilization ratio of system resource, support provides service for more substantial user terminal number, reduces processing load and the energy consumption of user terminal.Especially, by the mode of group assignment and/or lasting assignment, further conserve bandwidth resource.
One of ordinary skill in the art will appreciate that, realize that the process of the method for above-described embodiment can complete by the hardware that program command is correlated with, described program can be stored in read/write memory medium, and this program is carried out the corresponding step in said method when carrying out.Described storage medium can be as ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a communication means of supporting low-rate user terminal, is characterized in that, comprising:
For pre-assigned each user's component is joined different listening periods, described user's group comprises at least one user terminal;
For the user terminal in the user's group that is in current monitoring period distributes interface-free resources;
User terminal in organizing with the user who is in current monitoring period by described interface-free resources carries out transfer of data, and the interface-free resources that different user groups is used is multiplexing in time, communicates with user terminal during different user organizes at different listening periods.
2. method according to claim 1, is characterized in that, describedly comprises for the user terminal in the user group that is in current monitoring period distributes interface-free resources:
Be that the user terminal that is in the user group of current monitoring period distributes interface-free resources by assignment message.
3. method according to claim 1, is characterized in that, described method further comprises:
According to time sequencing, radio environment information, the ability information of user terminal of user terminal connecting system, or/and the QoS of survice demand information of user terminal is divided into corresponding user's group with user terminal.
4. method according to claim 2, is characterized in that, described is that the user terminal that is in user's group of current monitoring period distributes interface-free resources to be specially by assignment message:
Each user terminal in the user's group that is in current monitoring period sends respectively assignment message distribution interface-free resources; Perhaps, organize to the user who is in current monitoring period and send the assignment message comprise group index and user terminal identification, be in each user terminal in user's group of current monitoring period and be defined as the interface-free resources of self distributing by group index and user terminal identification.
5. method according to claim 4, is characterized in that, described assignment message is instant assignment message, and described instant assignment message is only distributed to interface-free resources user terminal and used once; Perhaps, described assignment message continuous and effective until distribution time or the Resources allocation of this assignment message agreement expire.
6. according to claim 4 or 5 described methods, is characterized in that, also comprises:
When sending assignment message to user terminal, indication keeps state of activation or enters resting state except this user terminal other user terminals outside; Or
When organizing transmission group assignment message to each user, indication keeps state of activation or enters resting state except the user terminal in this user's group other user's groups outside.
7. a communicator of supporting low-rate user terminal, is characterized in that, comprising:
The listening period allocation units are used to pre-assigned each user's component to join different listening periods, and described user's group comprises at least one user terminal;
The resource assignation unit is used to the user terminal in the user's group that is in current monitoring period to distribute interface-free resources;
Data transmission unit, be used for carrying out transfer of data by described interface-free resources and the user terminal that the user who is in current monitoring period organizes, and the interface-free resources that different user groups is used is multiplexing in time, communicates with user terminal during different user organizes at different listening periods.
8. install according to claim 7, it is characterized in that, described communicator further comprises: grouped element, be used for time sequencing, radio environment information, ability information of user terminal according to the user terminal connecting system, or/and, the QoS of survice demand information of user terminal is divided into corresponding user's group with user terminal.
9. according to claim 7 or 8 described devices, is characterized in that, described resource assignation unit comprises:
First resource assignment unit is used for sending assignment message to each user terminal of the user's group that is in current monitoring period and distributes interface-free resources; Or
Secondary resource assignment unit is used for organizing the transmission assignment message to the user who is in current monitoring period and distributes interface-free resources;
Described assignment message is instant effective or the lasting designated time is effective.
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| CN 201010176811 CN101841776B (en) | 2010-05-18 | 2010-05-18 | Communication method and device for supporting low-rate user terminal |
| PCT/CN2011/074187 WO2011144018A1 (en) | 2010-05-18 | 2011-05-17 | Communication method and device supporting low speed user terminals |
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| CN 201010176811 CN101841776B (en) | 2010-05-18 | 2010-05-18 | Communication method and device for supporting low-rate user terminal |
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| CN101841776B (en) * | 2010-05-18 | 2013-06-12 | 华为技术有限公司 | Communication method and device for supporting low-rate user terminal |
| CN102469493B (en) * | 2010-11-18 | 2014-07-02 | 杭州华三通信技术有限公司 | Method and device for estimating hollow states of wireless local area network |
| CN102480799B (en) * | 2010-11-24 | 2015-12-16 | 中兴通讯股份有限公司 | A kind of method of cordless communication network and notice equipment for machine type communication off-line thereof |
| CN102487548B (en) * | 2010-12-06 | 2014-10-08 | 中国移动通信集团公司 | Machine type communication system, information sending and obtaining method, base station and terminals |
| CN102769913B (en) * | 2011-05-04 | 2015-04-01 | 普天信息技术研究院有限公司 | Data grouping and uploading method for machine-type communication equipment and Internet of Things system |
| CN102204195A (en) * | 2011-05-18 | 2011-09-28 | 华为终端有限公司 | A message sending method and a device thereof |
| CN102523606B (en) * | 2011-12-05 | 2014-08-06 | 电信科学技术研究院 | Data interaction method and apparatus |
| CN102630100B (en) * | 2012-03-31 | 2014-11-19 | 华为技术有限公司 | Time division scheduling method and time division scheduling device |
| CN102638866A (en) * | 2012-04-16 | 2012-08-15 | 东南大学 | Mobile communication network access method based on M2M (machine to machine) service characteristic |
| CN103796234B (en) * | 2012-10-30 | 2017-06-16 | 普天信息技术研究院有限公司 | A kind of control method of terminal channel quality measurement |
| WO2017054208A1 (en) * | 2015-09-30 | 2017-04-06 | 华为技术有限公司 | Method and apparatus for determining and indicating air interface resource |
| CN108353432B (en) | 2015-11-05 | 2020-12-22 | 华为技术有限公司 | Random access equipment, method and system |
| CN109644437B (en) * | 2016-08-08 | 2020-12-15 | 华为技术有限公司 | Method for device-to-device communication and terminal device |
| CN107659612A (en) * | 2017-08-17 | 2018-02-02 | 深圳市盛路物联通讯技术有限公司 | Data transfer control method and device based on device packets |
| CN109474975B (en) * | 2017-09-08 | 2022-04-12 | 西安中兴新软件有限责任公司 | Networking method and terminal, and Internet of things platform |
| WO2023283757A1 (en) * | 2021-07-12 | 2023-01-19 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device and communication device |
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