CN102630097A - Grouped data sending method, base station and terminal - Google Patents
Grouped data sending method, base station and terminal Download PDFInfo
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- CN102630097A CN102630097A CN2012101137360A CN201210113736A CN102630097A CN 102630097 A CN102630097 A CN 102630097A CN 2012101137360 A CN2012101137360 A CN 2012101137360A CN 201210113736 A CN201210113736 A CN 201210113736A CN 102630097 A CN102630097 A CN 102630097A
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Abstract
The invention relates to a grouped data sending method, which comprises the following steps of: receiving grouped data comprising an identifier of a target terminal from a source terminal; finding out whether a path reaching the target terminal exists in a routing cache list; if finding out the path reaching the target terminal exists, carrying out interface selection; and forwarding the grouped data through a selected interface according to the found path. The invention further relates to another two grouped data sending methods corresponding to the grouped data sending method, and a terminal and a base station corresponding to the grouped data sending method. By adoption of the grouped data sending method, the base station and the terminal disclosed by the invention, link treatment can be carried out at the terminal.
Description
Technical field
The present invention relates to communication technical field, be specifically related to packet data transmitting, base station and terminal.
Background technology
Multi-hop relay be a kind of network that makes in the means that do not have to move under the fixed access point condition, in self-organizing (adhoc) network, obtain research and use.The adhoc network does not have fixing infrastructure, not have the router fixed yet, and all nodes all move, and all nodes can both dynamically keep and the getting in touch of other nodes with any-mode.All nodes is equal in the network, need not to be provided with any center control nodes.Node in the network not only has the required function of common mobile terminal, and has the message transfer capability.In this environment, because the finiteness of the wireless coverage at terminal, two user terminals that can't directly communicate can carry out packet forward by means of other nodes, also are multi-hop communication.In recent years, the multi-hop relay technology was applied in traditional honeycomb (cell) network, set up novel honeycomb multihop network, also become research focus new in the radio communication.In the honeycomb multihop network, travelling carriage can be connected to corresponding cellular base stations through one or more via nodes.The use of via node has reduced path loss, has improved the communication quality of every transmission link, thereby has improved the capacity and the coverage of whole cellular cell greatly.In the honeycomb multihop network, seeking suitable via node is very crucial for the performance that improves whole system, and this just needs effective routing algorithm.
Existing a kind of packet data transmitting is such: consider that the honeycomb multihop network is the characteristics at center with base station (BS:Base Station), change traditional distributed routing mode into the base station unified mode that focuses on that route is provided for each node.Link State between all terminals of base station maintenance (MS:Mobile Station), and be that the communication at terminal is concentrated and selected the path according to the Link State of safeguarding.After adopting the processing mode of concentrating, the base station can progressively obtain the topological structure of sub-district through handling and safeguarding resulting information in the routing procedure.
Consider that simultaneously 2 jumper connections go into the situation of honeycomb, the link-quality when MS and base station worsens, and in the time of need carrying out relaying, sends relay request earlier and gives BS, requires BS that a multi-hop route is provided.If BS can not find the path, just to neighbor node broadcasting relay request pathfinding signal, intermediate node returns signaling and gives the base station after receiving relay request MS.The base station can obtain first in view of the above and jump the quality of link, and measures the second jumping link-quality.So whenever, receive the relay request response that an intermediate node sends, the channel quality matrix of oneself is all upgraded once in the base station.After having upgraded the channel quality matrix; The base station is moved the pathfinding algorithm once more, and this moment, the base station obtained the whole channel informations relevant with MS, thereby selected via node; And the via node of selecting fed back to MS, make MS carry out grouped data and send through via node.
In research to prior art; The inventor finds: when using existing packet data transmitting, each packet relay distribution all need be carried out relay request, and all link processing are all undertaken by the base station; Make the resource overhead of base station very big, and communication complexity is high.
Summary of the invention
The embodiment of the invention provides packet data transmitting, base station and terminal, can carry out link processing at the terminal.
The embodiment of the invention provides a kind of packet data transmitting, comprising:
Reception is from the grouped data of source terminal, and said grouped data comprises the sign at purpose terminal;
Search whether the path that arrives said purpose terminal is arranged in the route-caching table;
If find the path that arrives said purpose terminal, carry out interface and select;
Transmit said grouped data according to the path that finds through the interface of selecting.
The embodiment of the invention also provides a kind of packet data transmitting, comprising:
Obtain the grouped data that needs transmission;
Judge whether access state is direct access;
If access state is direct access, said grouped data is sent to the base station;
If access state is not direct access, from bunch head table, select bunch head, said grouped data is sent to said bunch of head.
The embodiment of the invention also provides a kind of packet data transmitting, comprising:
Receiving block data, said grouped data comprises the sign at purpose terminal;
From SOT state of termination table, search the sign at said purpose terminal;
If do not find the sign at said purpose terminal, send said grouped data to core net;
If find the sign at said purpose terminal, judge whether the access state at said purpose terminal is direct access;
If the access state at said purpose terminal is directly to insert, send said grouped data to said purpose terminal; If the access state at said purpose terminal is not direct access, carry out bunch head and select, send said grouped data to a bunch hair of selecting.
The embodiment of the invention also provides a kind of terminal, comprising:
Receiving element is used to receive the grouped data from source terminal, and said grouped data comprises the sign at purpose terminal;
Search the unit, whether the sign at the purpose terminal that is used for receiving according to said receiving element is searched the route-caching table has the path that arrives said purpose terminal;
Selected cell is used for, carrying out interface and selecting when searching the unit and finding the path that arrives the purpose terminal said;
Transmitting element is used for the path of searching the arrival purpose terminal that the unit finds according to said, transmits said grouped data through the interface that said selected cell is selected.
The embodiment of the invention also provides another kind of terminal, comprising:
Acquiring unit is used to obtain the grouped data that needs send;
Judging unit is used to judge whether the access state at said terminal is direct access;
Selected cell when being used for access state at the said terminal of said judgment unit judges and not being directly inserting, is selected bunch head from bunch head table;
Transmitting element when being used for access state at the said terminal of said judgment unit judges and being directly inserting, sends to the base station with said grouped data; Access state at the said terminal of judgment unit judges is not when directly inserting, and said grouped data is sent to bunch head that said selected cell is selected.
The embodiment of the invention also provides a kind of base station, comprising:
Receiving element is used for receiving block data, and said grouped data comprises the sign at purpose terminal;
Search the unit, be used for searching the sign at said purpose terminal from SOT state of termination table;
Judging unit is used for when searching the unit and finding the sign at said purpose terminal, judging whether the access state at said purpose terminal is direct access said;
Selected cell when being used for access state at the said purpose of said judgment unit judges terminal and not being directly inserting, carries out bunch head and selects;
Transmitting element is used for when searching the unit and not finding the sign at said purpose terminal, sending said grouped data to core net said; When the access state at the said purpose of said judgment unit judges terminal is directly access, send said grouped data to said purpose terminal; Access state at said purpose terminal is not when directly inserting, and a bunch hair of selecting to said selected cell send said grouped data.
Can find out from the above technical scheme that the embodiment of the invention provides,, and in the terminal, safeguard a bunch head table because the terminal can be confirmed the send mode of grouped data according to the access state of self in the present embodiment; When carrying out the transmission of grouped data, only need from bunch head table, select bunch head; Again grouped data is sent to bunch head or directly sends to the base station and get final product, as long as the information of bunch head is arranged in bunch head table, relay request need not sent to the base station in the terminal when sending grouped data; Promptly carry out link processing at the terminal; Thereby reduce the resource overhead of base station, a bunch header only need be safeguarded in the terminal simultaneously, can reduce communication complexity.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the Organization Chart of honeycomb adhoc network in the embodiment of the invention;
Fig. 2 is the flow chart of packet data transmitting embodiment one in the embodiment of the invention;
Fig. 3 is the flow chart of packet data transmitting embodiment two in the embodiment of the invention;
Fig. 4 is the flow chart of packet data transmitting embodiment three in the embodiment of the invention;
Fig. 5 is the flow chart of packet data transmitting embodiment four in the embodiment of the invention;
Fig. 6 is the flow chart of packet data transmitting embodiment five in the embodiment of the invention;
Fig. 7 is the structure chart of terminal embodiment one in the embodiment of the invention;
Fig. 8 is the structure chart of terminal embodiment two in the embodiment of the invention;
Fig. 9 is the structure chart of terminal embodiment three in the embodiment of the invention;
Figure 10 is the structure chart of terminal embodiment four in the embodiment of the invention;
Figure 11 is the structure chart of base station embodiment one in the embodiment of the invention;
Figure 12 is the structure chart of base station embodiment two in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Introduce the honeycomb adhoc network that the embodiment of the invention relates to earlier, the framework of the honeycomb adhoc network that the embodiment of the invention provides is as shown in Figure 1:
Different sectors in the sub-district bunch have formed virtual cluster 1011 in the sub-district, and bunch head of virtual cluster carries out cooperating between the sector in the sub-district, so that the terminal is inserted flexibly.
Minizone virtual cluster 1021 bunch has been formed in the sector of neighbor cell, and bunch head of minizone virtual cluster carries out the minizone cooperation, so as bunch between communication and mixing insert and the minizone load balance of cooperation when inserting.
Virtual cluster has been divided into mixing access district 1012 according to the distance apart from the base station in the sub-district, and bunch Head Section 1013 distinguishes 1014 with directly inserting, and wherein mixing inserts the district from the base station farthest, and directly access is distinguished from the base station nearest; If the terminal is in direct access district and bunch Head Section, then the access state at terminal can be direct access.Mix to insert the district if the terminal is in, then the terminal can honeycomb relaying access base station, and this moment, the access state at terminal can be that cooperation inserts; Perhaps adhoc relaying access base station can be passed through in the terminal, and this moment, the access state at terminal can insert for mixing.If the terminal can not receive the information of base station and bunch head, then the access state at terminal is " adhoc ".The different access states that insert the terminal in district can be as shown in table 1.
Table 1
The minizone virtual cluster has been divided into mixing according to the distance apart from the center of this minizone virtual cluster and has inserted district 1022; Bunch Head Section 1023 distinguishes 1024 with directly inserting; Wherein mix to insert the district from the center of this minizone virtual cluster farthest, directly inserting the district, to leave the center of this minizone virtual cluster nearest.
In order to realize runing and can managing of portable terminal adhoc mode; Bunch head of the embodiment of the invention selects and sub-clustering is initiated by the base station; The selection and the sub-clustering of bunch head can be periodically to carry out; Also can under the triggering of incident, carry out, for example can after the base station has received the relay request of terminal transmission, carry out.In one embodiment of the invention, bunch head selection and sub-clustering can be carried out according to following flow process:
The base station is broadcasted bunch head and is selected request in this cell range, carry the positional information of base station, radius of society R, parameters such as a sub-district utilance U and a bunch threshold value C.Receive bunch head and select the terminal calculating self of request and the distance L between the base station.If L shows then that greater than threshold value 1 (threshold value 1 can be R/2 in one embodiment of the invention) and less than threshold value 2 (threshold value 2 can be 3R/4 in one embodiment of the invention) terminal is in a bunch Head Section, terminal access state S is set to direct access; Otherwise, showing that the terminal is in direct access district or mixing inserts the district, this moment, access state S in terminal was set to direct access earlier, and follow-up the bulletin according to bunch head by the terminal again upgraded.
Be in the quality of the terminal of bunch Head Section according to link between bunch head selection solicited message estimation self and the base station, the quality of link can be path loss P between terminal and the base station
LossThe terminal is again according to self dump energy information N
Rest, judge whether to satisfy the requirement that bunch head is selected.In one embodiment of the invention, if the P at certain terminal
Loss/ N
RestThe requirement that bunch head is selected is satisfied at this terminal of＜C explanation; Then a bunch head bulletin is sent at the terminal; A bunch notice information comprises the resource information at this terminal and the utilance U of this sub-district of living in, terminal; Wherein the resource information at terminal comprises the dump energy at this terminal and the path loss between this terminal and the base station, and bunch head bulletin of transmission can be honeycomb bunch head bulletin and adhoc bunch of head bulletin.
Receive bunch terminal of head bulletin and carry out the renewal of access state and bunch head table:
If the acquiescence access state S at terminal is " adhoc ", the terminal that then can receive honeycomb bunch head bulletin is updated to S " cooperation inserts "; The terminal that only can receive adhoc bunch of head bulletin is updated to S " mix and insert ".
If the acquiescence access state S at terminal is " directly insert ", can receive then that distance L is greater than threshold value 2 between honeycomb bunch head bulletin and this terminal and the base station, this terminal is updated to S " cooperation inserts ".
In one embodiment of the invention, bunch head table of terminal maintenance can be as shown in table 2.
Table 2
In the table 2, P
LossCellFor the terminal cellular interface and bunch head between the link path loss, N
RestCellBe the energy of cellular interface, P
LossBe the link path loss between terminal adhoc interface and bunch head, N
RestEnergy for the adhoc interface.Work as P
LossCellInfinity or N
RestCellWhen being zero, show that the cell interface is unavailable.
In one embodiment of the invention, cell interface and the unified management of adhoc interface energy, N at this moment
RestCell=N
Rest
The terminal is carried out a bunch head bulletin and is confirmed after having upgraded access state and bunch head table, the resource information and the access state of carried terminal in bunch head bulletin is confirmed; Wherein, The resource information at terminal can comprise the path loss of link of dump energy and the terminal and the base station at terminal; The path loss of link of dump energy and cell interface and base station that specifically can comprise the cell interface at terminal, the path loss of the dump energy of the adhoc interface at terminal and the link of adhoc interface and base station.
After bunch head receives bunch head bulletin of self terminal to confirm, the virtual cluster table of the information updating bunch head maintenance of confirming according to bunch head bulletin to carry.In one embodiment of the invention, the virtual cluster table of bunch head maintenance is as shown in table 3.
Table 3
Bunch head carries out bunch head and selects response after having upgraded virtual cluster head table, and bunch head selects response can carry the resource information of bunch head and the virtual cluster table information of this bunch head maintenance; The resource information of bunch head can comprise the path loss of link between dump energy and bunch head and the base station of bunch head.In order to reduce the management of disturbing and being convenient to the base station; In one embodiment of the invention; The cell interface is only used in communicating by letter between bunch head and the base station, and this moment, the resource information of bunch head specifically can be the path loss of link between dump energy and the cell interface and the base station of cell interface of bunch head.
An information updating SOT state of termination table that carries is selected to respond according to bunch head after receiving bunch head selection response from bunch head in the base station.Communicating by letter between a bunch of head of the present invention and base station only used among the embodiment of cell interface, and the SOT state of termination table of base station maintenance is as shown in table 4.
Table 4
Handle the virtual cluster table information that bunch head reports the base station, bunch capitiform at same terminal is become a bunch list information at this terminal.Make the base station only need preserve the dump energy information of bunch head, based on the virtual cluster head mechanism of sub-clustering subregion, a bunch head serves as the signaling information convergent point, and the expense of base station is significantly reduced, and the signaling convergent point is not to be single, can also increase reliability.
Introduce the packet data transmitting that the embodiment of the invention provides as follows, Fig. 2 has described the flow process of packet data transmitting embodiment one, and what this embodiment described is the handling process of source terminal, comprising:
201, obtain the grouped data that needs transmission.
202, judge whether access state is direct access; If get into 203; If, do not get into 204.
The access way that different access state adopted at terminal is different, and in one embodiment of the invention, the grouped data transmit mechanism of the acquiescence at the terminal of different access states is as shown in table 5.
Table 5
203, grouped data is sent to the base station; Process ends.
204, from bunch head table of safeguarding, select bunch head.
Particularly, source terminal can be selected bunch head according to following principle from bunch head table:
The utilance U of bunch sub-district, head place selects proper cell in A, the basis bunch head table, according to resource information selection bunch head from the sub-district of selecting of bunch head.If the utilance U of this sub-district at source terminal place
ThisUtilance U greater than threshold value 1 (in one embodiment of the invention, threshold value 1 can be 90%) and neighbor cell
AdjacentLess than threshold value 2 (in one embodiment of the invention, threshold value 1 can be 60%), then select neighbor cell, otherwise select this sub-district.
B, to bunch head of same sub-district, can carry out bunch head according to the resource information of bunch head and select and the interface selection.In one embodiment of the invention, if the dump energy of bunch head is more, and the link-quality between bunch head and the terminal is better, and then selected possibility is big more.In one embodiment of the invention, adopt bunch head dump energy and bunch head and terminal link path loss unite value selection bunch head, can adopt following formula compute cluster head dump energy and bunch head and terminal link path loss unite value:
arg?min(P
Loss α/N
Rest)，α≥1。
Wherein, P
LossBe the link path loss between terminal adhoc interface and bunch head, N
RestEnergy for the adhoc interface.
Use this formula compute cluster head dump energy and bunch head and terminal link path loss unite value after, choose and unite the bigger bunch head of value numerical value, thereby the dump energy of making and path loss are united the optimum bunch head of value and interface with selected.Particularly, if a bunch head of choosing is a honeycomb bunch head, then corresponding interface is a cellular interface; A bunch head of choosing is an adhoc bunch of head, and then corresponding interface is the adhoc interface.
In one embodiment of the invention; If a bunch head table of safeguarding is empty; This source terminal can send relay request to the base station; Trigger the base station and carry out bunch a head selection and a sub-clustering, make this source terminal upgrade bunch head table, thereby make this source terminal select bunch head from bunch head table after upgrading according to bunch head bulletin that bunch hair send.
205, grouped data is sent to bunch head of from bunch head table, selecting; Process ends.
From the above, source terminal can be confirmed the send mode of grouped data according to the access state of self in the present embodiment, and in the terminal, has safeguarded a bunch head table; When carrying out the transmission of grouped data, only need from bunch head table, select bunch head; Again grouped data is sent to bunch head or directly sends to the base station and get final product, as long as the information of bunch head is arranged in bunch head table, relay request need not sent to the base station in the terminal when sending grouped data; Promptly carry out link processing at the terminal; Thereby reduce the resource overhead of base station, source terminal only need be safeguarded a bunch header simultaneously, can reduce communication complexity.
Fig. 3 has described the flow process of packet data transmitting embodiment two, and what this embodiment described is the handling process of source terminal, comprising:
301, obtain the grouped data that needs transmission.
302, judge whether access state is direct access; If get into 303; If, do not get into 304.
303, grouped data is sent to the base station; Process ends.
Whether the type of 304, judging the grouped data corresponding service is the honeycomb access service; If get into 305; If, do not get into 306.
Because source terminal has adhoc and cellular interface, so source terminal can realize simultaneously that honeycomb inserts and the self-organized network communication in virtual cluster.Source terminal can be 2 big types with delineation of activities: the honeycomb access service is professional with adhoc, thereby safeguards 2 grouping cache districts, for the honeycomb access service, when carrying out bunch head selection, preferentially chooses cellular interface; Professional for adhoc, preferentially select the adhoc interface.Wherein, can be for the classification of business according to user's use habit, residing region business layout situation and professional specificity analysis carry out.For the grouping that does not have service identification, adopt the grouped data transmit mechanism of acquiescence.
305, from bunch head table, select honeycomb bunch head, grouped data is sent to this honeycomb bunch head; Process ends.
306, from bunch head table, select adhoc bunch of head, grouped data is sent to this adhoc bunch head; Process ends.
From the above, source terminal can be confirmed the send mode of grouped data according to the access state of self in the present embodiment, and in the terminal, has safeguarded a bunch head table; When carrying out the transmission of grouped data, only need from bunch head table, select bunch head; Again grouped data is sent to bunch head or directly sends to the base station and get final product, as long as the information of bunch head is arranged in bunch head table, relay request need not sent to the base station in the terminal when sending grouped data; Promptly carry out link processing at the terminal; Thereby reduce the resource overhead of base station, source terminal only need be safeguarded a bunch header simultaneously, can reduce communication complexity; Further, source terminal can be according to grouped data corresponding service type selecting adhoc interface or cellular interface when selecting bunch, make source terminal neatly option interface communicate.
Source terminal also comprises before grouped data is sent to bunch head in one embodiment of the invention: in grouped data, increase life span (TTL:Time To Live) field; The field value of ttl field is set; Field value through the ttl field that is provided with; Make bunch head carry out the adjacent cluster head and search, thereby improve the successful communication rate according to field value.
Fig. 4 has described the flow process of packet data transmitting embodiment three, and what this embodiment described is the handling process of bunch head, comprising:
401, reception is from the grouped data of source terminal, and grouped data comprises the sign at purpose terminal.
402, search whether the path that arrives the purpose terminal is arranged in the route-caching table; If get into 403; If, do not get into 404.
In one embodiment of the present of invention, the route-caching table of bunch head maintenance can be as shown in table 6.
Table 6
| The purpose terminal | Next jumping | Tolerance | Life-span (Lifetime) |
| Terminal 11 | Terminal 5 | 2 | 10ms |
| Terminal 12 | Terminal 12 | 1 | 10ms |
| ...... | ...... | ?...... | ?...... |
403, carry out interface and select, according to the interface forwarding packet data of the path that finds through selecting; Process ends.
Carry out interface when selecting, can compare the resource information of adhoc interface at resource information and purpose terminal of the cellular interface at the purpose terminal of writing down in the virtual cluster table; If the resource information of cellular interface is superior to the resource information of adhoc interface, select cellular interface; Otherwise, select the adhoc interface.Specifically can the value of uniting of the dump energy of the adhoc interface at the path loss of link between the adhoc interface of uniting value, purpose terminal of the dump energy of the cellular interface at the path loss of link between the cellular interface at purpose terminal and bunch head and purpose terminal and bunch head and purpose terminal be compared.
404, send the request of virtual cluster head to an adjacent sectors bunch hair.
The request of virtual cluster head comprises the sign at purpose terminal, so that adjacent sectors bunch head is searched the member whether the purpose terminal is this adjacent sectors bunch residing sector bunch.
405, receive the virtual cluster head response that adjacent sectors bunch hair send.
Virtual cluster head response is sent after finding the member that the purpose terminal is sector bunch by adjacent sectors bunch head.
406, grouped data is sent to adjacent sectors bunch head; Process ends.
Particularly, can grouped data be sent to adjacent sectors bunch head through adhoc interface or cellular interface.In one embodiment of the invention, in order to reduce the management of disturbing and being convenient to the base station, the adhoc interface is only used in the communication between bunch head, then only through the adhoc interface grouped data is sent to adjacent sectors bunch head this moment.
Wherein, Be at least two if send the quantity of the adjacent sectors bunch head of virtual cluster head response; Can be earlier according to the resource information of the adjacent sectors that writes down in the virtual cluster table bunch head; From this two adjacent sectors bunch head, select an adjacent sectors bunch head at least, again grouped data is sent to an adjacent sectors bunch head of selection.Specifically can from least two adjacent mountain area bunch heads, select an adjacent sectors bunch head according to the resource information of adjacent cluster head; For example can according to the dump energy of adjacent cluster head and adjacent cluster head and between self the value of uniting of the path loss of link select.
From the above, when bunch head does not arrive the path at purpose terminal in the present embodiment in the route-caching table, can grouped data be sent to adjacent sectors bunch head; Through adjacent sectors bunch head grouped data is sent to the purpose terminal; Thereby need not send grouped data, promptly carry out link processing, reduce the resource overhead of base station at the terminal through the base station; Bunch head only need safeguard adjacent sectors bunch head information and bunch in terminal information, can reduce the complexity of communication.
Fig. 5 has described the flow process of packet data transmitting embodiment four, and what this embodiment described is the handling process of bunch head, comprising:
501, reception is from the grouped data of source terminal, and grouped data comprises the sign and the ttl field at purpose terminal.
502, search whether the path that arrives the purpose terminal is arranged in the route-caching table; If get into 503; If, do not get into 504.
503, carry out interface and select, according to the interface forwarding packet data of the path that finds through selecting; Process ends.
Whether the field value of 504, judging ttl field is greater than 0; If get into 505; If, do not get into 509.
505, send the request of virtual cluster head to an adjacent sectors bunch hair.
506, judge whether to receive the virtual cluster head response that adjacent sectors bunch hair send; If, do not get into 507; If get into 508.
507, the field value with ttl field deducts 1; Get into 504.
508, grouped data is sent to adjacent sectors bunch head; Process ends.
509, grouped data is sent to the base station; Process ends.
From the above, when bunch head does not arrive the path at purpose terminal in the present embodiment in the route-caching table, can grouped data be sent to adjacent sectors bunch head; Through adjacent sectors bunch head grouped data is sent to the purpose terminal; Thereby need not send grouped data, promptly carry out link processing, reduce the resource overhead of base station at the terminal through the base station; Bunch head only need safeguard adjacent sectors bunch head information and bunch in terminal information, can reduce the complexity of communication; Further, bunch head can send the request of virtual cluster head to an adjacent sectors bunch hair according to the ttl field in the grouped data, thereby the scope of expanding communication improves the successful communication rate.
In one embodiment of the invention, can be faster when sending the subsequent packets data in order to make bunch head, bunch head is sending after the grouped data and can further upgrade the route-caching table of safeguarding according to the path of sending.
Fig. 6 has described the flow process of packet data transmitting embodiment five, and what this embodiment described is the handling process of base station, comprising:
601, receiving block data; Grouped data comprises the sign at purpose terminal;
602, judge whether from SOT state of termination table, to find the sign at purpose terminal; If, do not get into 603; If get into 604.
603, send grouped data to core net; Process ends.
Whether the access state of 604, confirming the purpose terminal is direct access; If get into 605; If, do not get into 606.
605, send grouped data to the purpose terminal; Process ends.
606, carry out bunch head and select, send grouped data to a bunch hair of selecting; Process ends.
Particularly, when the access state at the purpose terminal inserts for mixing, from bunch head table, select a bunch of head at random, send grouped data through the adhoc interface to a bunch of hair of selecting at random again.
When the access state at the purpose terminal inserts for cooperation, from bunch head table, select a bunch of head, send said grouped data through cellular interface to a bunch of hair of selecting again according to the resource information of bunch head; Particularly, can from bunch head table, select a bunch of head according to the value of uniting of the dump energy of the path loss of link between path loss, bunch head and the terminal in path between base station and bunch head and bunch head.In first embodiment of the invention, the uniting value and can pass through computes of the dump energy of the path loss of link and bunch head between the path loss in path, bunch head and the terminal between base station and bunch head:
arg?min((P
lossB-C+P
LossC-M)
α/N
Rest)，α≥1
Wherein, P
LossB-CBe the path loss of base station to the link of bunch head, P
LossC-MBe the path loss of bunch head to link of terminal.
From the above; The base station can directly send to purpose terminal or bunch head with grouped data according to the access state at terminal in the present embodiment; Thereby can grouped data be sent to the purpose terminal through bunch head, promptly carry out the link processing of part, reduce the resource overhead of base station at the terminal.
Introduce the terminal that the embodiment of the invention provides again, Fig. 7 has described the structure of terminal embodiment one, comprising:
Acquiring unit 701 is used to obtain the grouped data that needs send;
Judging unit 702 is used for after acquiring unit 701 has obtained grouped data, judges whether the access state at this terminal is direct access;
Transmitting element 704 is used for judging that at judging unit 702 access state at these terminals is when directly inserting, and sends to the base station with grouped data; Judge that at judging unit 702 access state at these terminals is not when directly inserting, and sends to bunch head that selected cell 703 is selected with grouped data.
From the above, the terminal can be confirmed the send mode of grouped data according to the access state of self in the present embodiment, and in the terminal, has safeguarded a bunch head table; When carrying out the transmission of grouped data, only need from bunch head table, select bunch head; Again grouped data is sent to bunch head or directly sends to the base station and get final product, as long as the information of bunch head is arranged in bunch head table, relay request need not sent to the base station in the terminal when sending grouped data; Promptly carry out link processing at the terminal; Thereby reduce the resource overhead of base station, a bunch header only need be safeguarded in the terminal simultaneously, can reduce communication complexity.
In one embodiment of the invention, the judging unit 702 at terminal, can also be used at the access state of judging the terminal is not when directly inserting, and judges the type of the grouped data corresponding service that acquiring unit 701 obtains; At this moment, the selected cell 703 at terminal can also be used for when judging unit 702 judges that the type of grouped data corresponding service is the honeycomb access service, from bunch head table, selecting honeycomb bunch head; When judging unit 702 judges that the type of grouped data corresponding service is the adhoc access service, from bunch head table, select adhoc bunch of head.The terminal can be according to grouped data corresponding service type selecting adhoc interface or cellular interface when selecting bunch in the present embodiment, make the terminal neatly option interface communicate.
Fig. 8 has described the structure of terminal embodiment two, comprising:
Receiving element 801 is used to receive bunch head bulletin from bunch head, and this bunch head bulletin comprises the resource information of this bunch head and the utilance of sub-district, this bunch head place;
Updating block 802 is used for according to bunch head bulletin that receiving element 801 receives access state being upgraded, and according to the resource information and the utilance of sub-district, this bunch head place of this bunch head a bunch head table is upgraded;
Acquiring unit 804 is used to obtain the grouped data that needs send;
Judging unit 805 is used for after acquiring unit 804 has obtained grouped data, judges whether the access state at this terminal is direct access;
Unit 807 is set, when being used for access state and not being directly inserting, in grouped data, increases ttl field, the field value of ttl field is set at judging unit 805 judgement terminals;
Field value through the ttl field that is provided with makes bunch head carry out the adjacent cluster head according to the field value of ttl field and searches.
Transmitting element 803 is used for sending a bunch head bulletin to confirm to a bunch hair, and bunch head bulletin is confirmed to comprise the resource information at terminal and the access state after updating block 802 renewals, so that bunch head upgrades the virtual cluster table; Judge that at judging unit 805 access state at these terminals is when directly inserting, and sends to the base station with grouped data; Judge that at judging unit 805 access state at these terminals is not when directly inserting, the grouped data that unit 807 is set has increased ttl field is sent to bunch head that selected cell 806 is selected.
From the above, the terminal can be confirmed the send mode of grouped data according to the access state of self in the present embodiment, and in the terminal, has safeguarded a bunch head table; When carrying out the transmission of grouped data, only need from bunch head table, select bunch head; Again grouped data is sent to bunch head or directly sends to the base station and get final product, as long as the information of bunch head is arranged in bunch head table, relay request need not sent to the base station in the terminal when sending grouped data; Promptly carry out link processing at the terminal; Thereby reduce the resource overhead of base station, a bunch header only need be safeguarded in the terminal simultaneously, can reduce communication complexity; And the terminal can be according to grouped data corresponding service type selecting adhoc interface or cellular interface when selecting bunch, make the terminal neatly option interface communicate; Further, in grouped data, increase ttl field, make bunch head carry out the adjacent cluster head and search, thereby the scope of expanding communication improves the successful communication rate according to field value.
Fig. 9 has described the structure of terminal embodiment three, comprising:
Receiving element 901 is used to receive the grouped data from source terminal, and grouped data comprises the sign at purpose terminal;
Transmitting element 904 is used for according to the path of searching the arrival purpose terminal that unit 902 finds, the interface forwarding packet data of selecting through selected cell 903.
From the above, when the terminal does not arrive the path at purpose terminal in the present embodiment in the route-caching table, can grouped data be sent to adjacent sectors bunch head; Through adjacent sectors bunch head grouped data is sent to the purpose terminal; Thereby need not send grouped data, promptly carry out link processing, reduce the resource overhead of base station at the terminal through the base station; Terminal in the present embodiment only need safeguard adjacent sectors bunch head information and bunch in terminal information, can reduce the complexity of communication.
In one embodiment of the invention; The transmitting element 904 that the terminal comprises can also be used for searching when arriving the path at purpose terminal searching unit 902; Send the request of virtual cluster head to an adjacent sectors bunch hair, the request of virtual cluster head comprises the sign at said purpose terminal; The request of virtual cluster head comprises the sign at purpose terminal, makes adjacent sectors bunch head search the member whether the purpose terminal is this adjacent sectors bunch residing sector bunch according to the sign at purpose terminal.The receiving element 901 that the terminal comprises can also be used to receive the virtual cluster head response that adjacent sectors bunch hair send, and the response of virtual cluster head is sent after finding the member that the purpose terminal is sector bunch by adjacent sectors bunch head.Transmitting element 904 can also be used for grouped data is sent to the adjacent sectors bunch head that has sent the response of virtual cluster head.Particularly; Transmitting element 904 can comprise selected cell; Be used for when receiving element 901 has received the virtual cluster head response that at least two adjacent sectors bunch hairs send; According to the resource information of the adjacent sectors that writes down in the virtual cluster table bunch head, from least two adjacent sectors bunch head, select an adjacent sectors bunch head; Processing unit is used for grouped data is sent to the adjacent sectors bunch head that selected cell is selected.The terminal can a best adjacent sectors bunch head of resource in the present embodiment when having a plurality of adjacent sectors bunch head to select, and can improve communication quality.
Figure 10 has described the structure of terminal embodiment four, comprising:
Receiving element 1001 is used to receive the grouped data from source terminal, and grouped data comprises the sign at purpose terminal; Receive the virtual cluster head response that adjacent sectors bunch hair send, the response of virtual cluster head is sent after finding the member that the purpose terminal is sector bunch by adjacent sectors bunch head; Reception is selected request from bunch head of base station, and bunch head selects request to comprise radius of society, sub-district utilance and a bunch threshold value; Bunch head bulletin that receiving terminal sends confirms that a bunch head bulletin confirms to comprise the resource information at terminal and the access state after the terminal updating;
Particularly, in one embodiment of the invention, selected cell 1003 can comprise comparing unit, is used for the resource information of adhoc interface at resource information and purpose terminal of the cellular interface at the purpose terminal that comparison virtual cluster table writes down; Processing unit is used for when comparing unit confirms that the resource information of cellular interface is superior to the resource information of adhoc interface, selects cellular interface; When comparing unit confirms that the resource information of adhoc interface is superior to the resource information of cellular interface, select the adhoc interface.
Updating block 1008 is used for when confirming that satisfied bunch the threshold value of resource information at terminal confirmed in unit 1007, access state being updated to direct access; Confirm to comprise that the resource information at terminal and the access state after the terminal updating upgrade the virtual cluster table according to a bunch head bulletin;
Transmitting element 1004 is used for according to the path of searching the arrival purpose terminal that unit 1002 finds, the interface forwarding packet data of selecting through selected cell 1003; Search when arriving the path at purpose terminal searching unit 1002; Send the request of virtual cluster head to an adjacent sectors bunch hair; The request of virtual cluster head comprises the sign at said purpose terminal, so that adjacent sectors bunch head is searched the member whether the purpose terminal is this adjacent sectors bunch residing sector bunch; Grouped data is sent to the adjacent sectors bunch head that has sent the response of virtual cluster head; When confirming that unit 1007 confirms that the resource information at terminals satisfies bunch threshold value, send out a bunch head and send a bunch head bulletin, go into state and upgrade so that receive bunch end-on of head bulletin; Send bunch head to the base station and select response, bunch head is selected to respond resource information and the virtual cluster table information that comprises bunch head, so that the base station is upgraded SOT state of termination table.
From the above, when the terminal does not arrive the path at purpose terminal in the present embodiment in the route-caching table, can grouped data be sent to adjacent sectors bunch head; Through adjacent sectors bunch head grouped data is sent to the purpose terminal; Thereby need not send grouped data, promptly carry out link processing, reduce the resource overhead of base station at the terminal through the base station; Terminal in the present embodiment only need safeguard adjacent sectors bunch head information and bunch in terminal information, can reduce the complexity of communication.
Figure 11 has described the structure of base station embodiment one, comprising:
Receiving element 1101 is used for receiving block data, and grouped data comprises the sign at purpose terminal;
Judging unit 1103 is used for when searching unit 1102 and find the sign at purpose terminal, judging whether the access state at purpose terminal is direct access;
Transmitting element 1105 is used for when searching unit 1102 and do not find the sign at purpose terminal, sending grouped data to core net; When judging unit 1103 judges that the access state at purpose terminal is directly access, send grouped data to the purpose terminal; Access state at the purpose terminal is not when directly inserting, and a bunch hair of selecting to selected cell 1104 send grouped data.
From the above; The base station can directly send to purpose terminal or bunch head with grouped data according to the access state at terminal in the present embodiment; Thereby can grouped data be sent to the purpose terminal through bunch head, promptly carry out the link processing of part, reduce the resource overhead of base station at the terminal.
Figure 12 has described the structure of base station embodiment two, comprising:
Receiving element 1201 is used for receiving block data, and grouped data comprises the sign at purpose terminal; Reception selects bunch head of request to select response from the response bunch head of bunch head, and bunch head selects response to comprise the resource information and the virtual cluster table information of bunch head;
Search unit 1202, the sign at the purpose terminal that is used for comprising according to the grouped data that receiving element 1201 receives is searched the sign at purpose terminal from SOT state of termination table;
Judging unit 1203 is used for when searching unit 1202 and find the sign at purpose terminal, judging whether the access state at purpose terminal is direct access;
Selected cell 1204 is used for judging that at judging unit 1203 access state at purpose terminals is not when directly inserting, and carries out bunch head and selects;
Transmitting element 1205 is used for when searching unit 1202 and do not find the sign at purpose terminal, sending grouped data to core net; When judging unit 1203 judges that the access state at purpose terminal is directly access, send grouped data to the purpose terminal; Access state at the purpose terminal is not when directly inserting, and a bunch hair of selecting to selected cell 1204 send grouped data; Broadcasting bunch head is selected request, and bunch head selects request to comprise radius of society, sub-district utilance and a bunch threshold value;
Select the radius of society, sub-district utilance and bunch threshold value that comprise in the request through bunch head, make to receive bunch head and select the terminal of request can confirm whether this terminal is a bunch head;
Updating block 1206 is used for selecting response that SOT state of termination table is upgraded according to bunch head that receiving element 1201 receives.
From the above; The base station can directly send to purpose terminal or bunch head with grouped data according to the access state at terminal in the present embodiment; Thereby can grouped data be sent to the purpose terminal through bunch head, promptly carry out the link processing of part, reduce the resource overhead of base station at the terminal; Can select response that SOT state of termination table is upgraded according to bunch head simultaneously, make the record in the SOT state of termination table correct, can improve the reliability of communication.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than detailed introduction has been carried out at packet data transmitting, base station and terminal that the embodiment of the invention provided, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a packet data transmitting is characterized in that, comprising:
Obtain the grouped data that needs transmission;
Judge whether access state is direct access;
If access state is direct access, said grouped data is sent to the base station;
If access state is not direct access, from bunch head table, select bunch head, said grouped data is sent to said bunch of head.
2. packet data transmitting as claimed in claim 1 is characterized in that, from bunch head table, selects a bunch head to take a step forward and comprises:
Confirm the type of said grouped data corresponding service;
If the type of said grouped data corresponding service is the honeycomb access service, the said step of bunch head of from bunch head table, selecting comprises: from bunch head table, select honeycomb bunch head;
If the type of said grouped data corresponding service is the adhoc access service, the said step of bunch head of from bunch head table, selecting comprises: from bunch head table, select adhoc bunch of head.
3. according to claim 1 or claim 2 packet data transmitting is characterized in that, also comprises before said grouped data is sent to said bunch of head:
In said grouped data, increase the life span field, the field value of life span field is set.
4. a packet data transmitting is characterized in that, comprising:
Receiving block data, said grouped data comprises the sign at purpose terminal;
From SOT state of termination table, search the sign at said purpose terminal;
If do not find the sign at said purpose terminal, send said grouped data to core net;
If find the sign at said purpose terminal, judge whether the access state at said purpose terminal is direct access;
If the access state at said purpose terminal is directly to insert, send said grouped data to said purpose terminal; If the access state at said purpose terminal is not direct access, carry out bunch head and select, send said grouped data to a bunch hair of selecting.
5. packet data transmitting as claimed in claim 4 is characterized in that, when the access state at said purpose terminal inserted for mixing, the said bunch step of head selection of carrying out comprised: from bunch head table, select a bunch of head at random; Said bunch hair to selection send the step of said grouped data to comprise: send said grouped data through the adhoc interface to a bunch of hair of selecting at random;
Or
When the access state at said purpose terminal inserted for cooperation, the said bunch step of head selection of carrying out comprised: from bunch head table, select a bunch of head according to the resource information of bunch head; Said bunch hair to selection send the step of said grouped data to comprise: send said grouped data through cellular interface to a bunch of hair of said selection.
6. a terminal is characterized in that, comprising:
Acquiring unit is used to obtain the grouped data that needs send;
Judging unit is used to judge whether the access state at said terminal is direct access;
Selected cell when being used for access state at the said terminal of said judgment unit judges and not being directly inserting, is selected bunch head from bunch head table;
Transmitting element when being used for access state at the said terminal of said judgment unit judges and being directly inserting, sends to the base station with said grouped data; Access state at the said terminal of judgment unit judges is not when directly inserting, and said grouped data is sent to bunch head that said selected cell is selected.
7. packet data transmitting as claimed in claim 6 is characterized in that, said judging unit, and also being used at the access state of judging said terminal is not when directly inserting, and judges the type of the grouped data corresponding service that said acquiring unit obtains;
Said selected cell is used for when the type of said judgment unit judges grouped data corresponding service is the honeycomb access service, from bunch head table, selects honeycomb bunch head; When the type of said judgment unit judges grouped data corresponding service is the adhoc access service, from bunch head table, select adhoc bunch of head.
8. like claim 6 or 7 described terminals, it is characterized in that, also comprise:
The unit is set, when being used for access state and not being directly inserting, in said grouped data, increases the life span field, the field value of life span field is set at the said terminal of said judgment unit judges.
9. a base station is characterized in that, comprising:
Receiving element is used for receiving block data, and said grouped data comprises the sign at purpose terminal;
Search the unit, be used for searching the sign at said purpose terminal from SOT state of termination table;
Judging unit is used for when searching the unit and finding the sign at said purpose terminal, judging whether the access state at said purpose terminal is direct access said;
Selected cell when being used for access state at the said purpose of said judgment unit judges terminal and not being directly inserting, carries out bunch head and selects;
Transmitting element is used for when searching the unit and not finding the sign at said purpose terminal, sending said grouped data to core net said; When the access state at the said purpose of said judgment unit judges terminal is directly access, send said grouped data to said purpose terminal; Access state at said purpose terminal is not when directly inserting, and a bunch hair of selecting to said selected cell send said grouped data.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889020A (en) * | 2014-03-14 | 2014-06-25 | 上海交通大学 | Wireless sensor network system based on dynamic routing and method thereof |
| CN105050111A (en) * | 2015-06-15 | 2015-11-11 | 上海斐讯数据通信技术有限公司 | Method and system for reporting access state of terminal to server by access point |
| CN111356201A (en) * | 2018-12-20 | 2020-06-30 | 电信科学技术研究院有限公司 | Method and device for grouping great coverage and network node |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6711409B1 (en) * | 1999-12-15 | 2004-03-23 | Bbnt Solutions Llc | Node belonging to multiple clusters in an ad hoc wireless network |
| US6973053B1 (en) * | 2000-09-12 | 2005-12-06 | Bbnt Solutions Llc | Using direct cluster member to cluster member links to improve performance in mobile communication systems |
| CN101247628A (en) * | 2007-02-13 | 2008-08-20 | 华为技术有限公司 | Terminal, wireless communication network access method and radio communication system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103889020A (en) * | 2014-03-14 | 2014-06-25 | 上海交通大学 | Wireless sensor network system based on dynamic routing and method thereof |
| CN105050111A (en) * | 2015-06-15 | 2015-11-11 | 上海斐讯数据通信技术有限公司 | Method and system for reporting access state of terminal to server by access point |
| CN105050111B (en) * | 2015-06-15 | 2018-05-18 | 上海斐讯数据通信技术有限公司 | A kind of access point is to the method and system of server reporting terminal access state |
| CN111356201A (en) * | 2018-12-20 | 2020-06-30 | 电信科学技术研究院有限公司 | Method and device for grouping great coverage and network node |
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