CN101442806B - Method for reducing ascending resource assignation overhead - Google Patents
Method for reducing ascending resource assignation overhead Download PDFInfo
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- CN101442806B CN101442806B CN2007101871762A CN200710187176A CN101442806B CN 101442806 B CN101442806 B CN 101442806B CN 2007101871762 A CN2007101871762 A CN 2007101871762A CN 200710187176 A CN200710187176 A CN 200710187176A CN 101442806 B CN101442806 B CN 101442806B
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Abstract
The invention discloses a method for reducing allocated cost for uplink resource comprising steps: mobile station initiates a VoIP service connection request to base station; base station allocates group resource allocation information for VoIP service, allocates the VoIP service of same modulated coding style in same group to same uplink burst resource block according to the group resource allocation information, and notifies mobile station of group of the information of uplink burst resource block via uplink resource allocation message; the mobile station decodes the uplink resource allocation message, and determines concrete position of the VoIP service to which the mobile station corresponds in the uplink burst resource block according to uplink resource allocation message. The invention guarantees group user positioned in different channel condition adopts different modulation and coding mode and be allocated with different uplink resource, also guarantees talking quality of VoIP service.
Description
Technical field
The present invention relates to a kind of broadband wireless communication technique, especially, relate to a kind of method that reduces ascending resource assignation overhead.
Background technology
The down link of next generation mobile communication systems such as mobile WiMAX mainly inserts the multi-access mode of (OFDMA) based on orthogonal frequency division multiplexing multiple access, under given system bandwidth, on the angle of frequency domain, different users realizes the purpose that multiple access inserts by the orthogonal sub-carriers resource that takies some.
In the mobile WiMAX system, the packet that different user connects transmits on certain orthogonal sub-carriers resource.At down link, comprise the resource allocation information of each downlink burst data bag in the DL_MAP message, the position of the corresponding connection of indication travelling carriage place data burst.Owing to comprise in the downlink burst and often comprise the data of issuing a plurality of travelling carriages, can reduce the expense of the DL_MAP of system so to a great extent.And in up link, UL-MAP only comes the resource allocation information of assignment up link at the connection of single mobile station, when there is a large amount of ip voice business (VoIP in up link, Voice over Internet Protocol) active user connects, need a large amount of fritter resource allocations at each user, at this moment, the expense of UL-MAP message will cause very big burden to system.
For real time business such as VoIP, adopt the different user of same voice encoder type, the arrival interval of VoIP voice packet and bag size are constants.VoIP for the same voice encoder connects, and its VoIP voice packet arrival interval and bag size all are identical.
Summary of the invention
Technical problem solved by the invention provides a kind of method that reduces ascending resource assignation overhead, both guaranteed that the group user that is in the different channels condition adopted different modulation coding modes, and be assigned different ascending resources, guaranteed the speech quality of VoIP business again.
Technical scheme is as follows:
A kind of method that reduces ascending resource assignation overhead, step comprises:
(1) travelling carriage is initiated the VoIP service connection request to the base station;
(2) base station is a described VoIP traffic assignments group resource allocation information, according to described group resource allocation information with the VoIP traffic assignments that has identical modulation coding mode in the same group in same uplink burst Resource Block, and notify travelling carriage in the described group with the information of uplink burst Resource Block by ascending resource assignation message;
(3) the described ascending resource assignation message of described mobile station decodes, and determine the particular location of described VoIP business in described uplink burst Resource Block of this travelling carriage correspondence according to described ascending resource assignation message.
Further, in the step (1), described travelling carriage is initiated described VoIP service connection request by dynamic service request to create message.
Further, in the step (1), the professional resource size that connects of described VoIP is unit with the time slot.
Further, in the step (2), increase response message (DSA-RSP) with described group resource allocation information notice travelling carriage by dynamic service; Described group resource allocation information comprises: described base station is professional distribution group number, described travelling carriage corresponding sequence number and the professional resource size that is connected of described VoIP in group of connecting of described VoIP.
Further, step (2) is specially: in the professional time-continuing process of VoIP, when arrive in the dispatching cycle of the VoIP of affiliated group business, described base station is according to the residing channel condition of described travelling carriage, the travelling carriage that will be in same channel condition grade is dispatched in same uplink burst Resource Block, and by the described travelling carriage of ascending resource assignation message informing; Include mask code sequence in the described ascending resource assignation message, the length of described mask code sequence is identical with number of users in the group, and according to the sequence number of each travelling carriage in group, each travelling carriage is corresponding one by one in each bit in the described mask code sequence and the group.
Further, in the step (2), bit in the described mask code sequence is 1 to be illustrated in the described uplink burst Resource Block of described ascending resource assignation message indication and to comprise the ascending resource of corresponding travelling carriage with it, and the bit in the described mask code sequence is 0 to be illustrated in the uplink burst Resource Block of described ascending resource assignation message indication and not comprise the ascending resource of corresponding travelling carriage with it.
Further, in the step (2), the portable terminal in the described group adopts same voice encoder type and scheduling constantly, and the described travelling carriage under the same group has identical arrival interval and bag size.
Further, in the step (2), comprise in the described ascending resource assignation message based on group: the total time slot size of group's group number, uplink burst Resource Block, modulating-coding and the mask code sequence that the uplink burst Resource Block adopts.
Further, in the step (2), the pairing ascending resource of the professional connection of the VoIP of the described travelling carriage in the group is arranged in order according to the numeric order of travelling carriage in group in described uplink burst Resource Block.
Further, in the step (3), described mobile station decodes is based on the described ascending resource assignation message of group, according to modulating-coding and the mask code sequence in the described ascending resource assignation message, and the professional sequence number of travelling carriage in group of being established when setting up and the professional connection resource size VoIP that is distributed of connecting of described VoIP, determine the particular location of the corresponding VoIP business packet of this travelling carriage in described uplink burst Resource Block.
The technology of the present invention is low based on the expense of the resource allocation of the VoIP real time business of OFDMA mode, further improves the sector capacity of system.
By the present invention, each VoIP user of mobile station with same voice encoder, can indicate the assignment of the professional ascending resource that connects of VoIP of user in a plurality of groups by an ascending resource assignation message, can save the resource allocation overhead under the professional connection situation of VoIP greatly, further increase the sector capacity of system.By mask code sequence, both guaranteed that the group user that is in the different channels condition adopted different modulation coding modes, and be assigned different ascending resources, guaranteed the speech quality of VoIP business again.
Description of drawings
Fig. 1 is a mask code sequence function exemplary plot of the present invention;
Fig. 2 is based on the message format figure of the ascending resource assignation message of group among the present invention;
Fig. 3 is the realization flow figure of the present invention's method of reducing ascending resource assignation overhead.
Embodiment
The present invention has the fixed cycle transmission according to the VoIP real time business bag of same-code device, and the characteristics that length is fixing, when carrying out ascending resource assignation, by the user assignment ascending resource of the mask code sequence in a certain the ascending resource assignation message to some groups.
Below in conjunction with accompanying drawing, be example with BWA based on the OFDMA standard, the preferred embodiments of the present invention are described in detail.
Reference is shown in Figure 1, the function of the mask code sequence among the present invention is done describing in further detail.
In the mobile WiMAX BWA based on the OFDMA standard, resource allocation is carried out on time frequency two-dimensional resources.From the angle of frequency domain, each professional data that connect all occupies certain orthogonal sub-carriers resource; From the angle of time domain, each professional data that connect occupies certain OFDM (OFDM) symbol again.Can comprise the corresponding professional uplink resource assignment that connects of all travelling carriages in the group in the ascending resource assignation message under the present invention, also can comprise the corresponding professional ascending resource assignation that connects of part travelling carriage based on group.The ascending resource of indicating assignment by the mask code sequence in the ascending resource assignation message is at which user, the length of described mask code sequence is identical with number of users in the group, according to the sequence number of each travelling carriage in group, each travelling carriage is corresponding one by one in each bit in the mask code sequence and the group.
Shown in the function of Fig. 1 mask code sequence, this group comprises 6 users altogether, adopts two ascending resource assignation message (comprising ascending resource assignation message 1 and ascending resource assignation message 2) to indicate the ascending resource that all users are connected in the group to distribute altogether.Article two, ascending resource assignation message is distinguished the ascending resource piece of corresponding uplink burst # 2 and uplink burst # 3 correspondence, uplink burst # 2 uses sign indicating number (UIUC with the corresponding different respectively uplink interval of uplink burst # 3, Uplink Interval Usage Code), adopt different modulation coding modes.Wherein, comprising mask code sequence in the resource allocating message of the correspondence of uplink burst # 2 is 101100 (Mask Sequence=101100), represent this ascending resource assignation message at 3 travelling carriages in the group, the ascending resource of ascending resource assignation message 1 indication uplink burst # 2 is used for professional connection of VoIP of travelling carriage 1, travelling carriage 3 and travelling carriage 4; And comprise mask code sequence in the ascending resource assignation message 2 of the correspondence of uplink burst # 3 is 010011 (Mask Sequence=010011), and the ascending resource of the uplink burst # 3 of ascending resource assignation message 2 indications is used for professional connection of VoIP of travelling carriage 2, travelling carriage 5 and travelling carriage 6.
At this, the bit in the mask code sequence is 1 to be illustrated in the uplink burst Resource Block of ascending resource assignation message indication and to comprise the ascending resource of corresponding travelling carriage with it; Bit in the mask code sequence is 0 to be illustrated in the uplink burst Resource Block of ascending resource assignation message indication and not comprise the ascending resource of corresponding travelling carriage with it.
With reference to shown in Figure 2, the message format based on the ascending resource assignation message of group among the present invention is done detailed description.Wherein, Extended-2 UIUC and UIUC are used to indicate the physical attribute of type of message and message institute distributes resource blocks, have set the code modulation mode of concrete employing in the physical attribute.The Length field is used to indicate this message-length based on the ascending resource assignation message of group.The GID field is used to indicate this message at which group.Repetition coding indication field be used for code weight that Indication message adopts again number be 1,2,4 or 6.Resource Size field is used in reference to total resource size that first finger is joined the Resource Block of message correspondence, and this resource size is to be base unit with the time slot.Mask Sequence mask code sequence be used to indicate ascending resource assignation message entrained be the ascending resource of concrete which user in the group.
With reference to shown in Figure 3, the implementation procedure that has of the reduction ascending resource assignation overhead among the present invention is done detailed description.
Step S301: travelling carriage is initiated the VoIP service connection request by dynamic service request to create message (DSA-REQ).
Step S302: when setting up the professional connection of VoIP, the base station is the professional distribution group resource allocation information that connects of VoIP, increases response message (DSA-RSP) with group's resource allocation information notice travelling carriage by dynamic service.
This group's resource allocation information comprises professional corresponding group's group number, travelling carriage corresponding sequence number, the professional resource size of being distributed that connects of VoIP in group of connecting of VoIP.
Step S303: in the professional time-continuing process of VoIP, when arrive in the dispatching cycle of the affiliated VoIP of group business, the base station is according to the residing channel condition of all users in the group, the group user scheduling that will be in same channel condition grade is in same uplink burst Resource Block, and by the ascending resource assignation message informing travelling carriage based on group, the mask code sequence in this ascending resource assignation message is used to indicate resource information that indication joins at which user in the group.Ascending resource assignation message is carried out at the certain customers in the group, comes the identifying resource piece to be used for which user of described group by mask code sequence.
Portable terminal is for adopting the same voice encoder type and having identical scheduling different voip users constantly in the group, and the voip user under the same group has identical arrival interval and bag size.Thus, the voip user of same group can be carrying out resource assignation identical dispatching cycle on identical frame, and be identical for each user VoIP connects the resource size of distributing.
Comprise modulation coding information and mask code sequence that the total time slot size of group group number, uplink burst Resource Block, uplink burst Resource Block adopt in the ascending resource assignation message based on group.
The professional ascending resource that connects concrete correspondence of the VoIP of mobile in group is to be arranged in order according to the numeric order of travelling carriage in group in the uplink burst Resource Block.
Step S304: mobile station decodes ascending resource assignation message, and determine the particular location of VoIP business in described uplink burst Resource Block of this travelling carriage correspondence according to ascending resource assignation message.
After the ascending resource assignation message of mobile station decodes based on group, according to modulating-coding in the ascending resource assignation message and mask code sequence, and the professional sequence number of travelling carriage in group of establishing when setting up and the professional connection resource size VoIP that is distributed of connecting of VoIP, can determine the particular location of the corresponding VoIP business packet of this travelling carriage in the uplink burst Resource Block.
The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (9)
1. method that reduces ascending resource assignation overhead, in this method, the travelling carriage in the same group adopts same voice encoder type and scheduling constantly, and the described travelling carriage same group under has identical arrival interval and bag is big or small, may further comprise the steps:
(1) travelling carriage is initiated the VoIP service connection request to the base station;
(2) base station is a described VoIP traffic assignments group resource allocation information, according to described group resource allocation information with the VoIP traffic assignments that has identical modulation coding mode in the same group in same uplink burst Resource Block, and notify travelling carriage in the described group with the information of uplink burst Resource Block by ascending resource assignation message;
(3) the described ascending resource assignation message of described mobile station decodes, and determine the particular location of described VoIP business in described uplink burst Resource Block of this travelling carriage correspondence according to described ascending resource assignation message.
2. the method for reduction ascending resource assignation overhead according to claim 1 is characterized in that, in the step (1), described travelling carriage is initiated described VoIP service connection request by dynamic service request to create message.
3. the method for reduction ascending resource assignation overhead according to claim 1 is characterized in that, in the step (1), the professional resource size that connects of described VoIP is unit with the time slot.
4. the method for reduction ascending resource assignation overhead according to claim 1 is characterized in that, in the step (2), increases response message (DSA-RSP) with described group resource allocation information notice travelling carriage by dynamic service; Described group resource allocation information comprises: described base station is professional distribution group number, described travelling carriage corresponding sequence number and the professional resource size that is connected of described VoIP in group of connecting of described VoIP.
5. the method for reduction ascending resource assignation overhead according to claim 1, it is characterized in that, step (2) is specially: in the professional time-continuing process of VoIP, when arrive in the dispatching cycle of the VoIP of affiliated group business, described base station is according to the residing channel condition of described travelling carriage, the travelling carriage that will be in same channel condition grade is dispatched in same uplink burst Resource Block, and by the described travelling carriage of ascending resource assignation message informing.
6. the method for reduction ascending resource assignation overhead according to claim 1, it is characterized in that, in the step (2), comprise in the described ascending resource assignation message based on group: the total time slot size of group's group number, uplink burst Resource Block, modulating-coding and the mask code sequence that the uplink burst Resource Block adopts, the length of described mask code sequence is identical with number of users in the group, according to the sequence number of each travelling carriage in group, each travelling carriage is corresponding one by one in each bit in the described mask code sequence and the group.
7. the method for reduction ascending resource assignation overhead according to claim 6, it is characterized in that, bit in the described mask code sequence is 1 to be illustrated in the described uplink burst Resource Block of described ascending resource assignation message indication and to comprise the ascending resource of corresponding travelling carriage with it, and the bit in the described mask code sequence is 0 to be illustrated in the uplink burst Resource Block of described ascending resource assignation message indication and not comprise the ascending resource of corresponding travelling carriage with it.
8. the method for reduction ascending resource assignation overhead according to claim 1, it is characterized in that, in the step (2), the pairing ascending resource of the professional connection of the VoIP of the described travelling carriage in the group is arranged in order according to the numeric order of travelling carriage in group in described uplink burst Resource Block.
9. the method for reduction ascending resource assignation overhead according to claim 1, it is characterized in that, in the step (3), described mobile station decodes is based on the described ascending resource assignation message of group, according to modulating-coding and the mask code sequence in the described ascending resource assignation message, and the professional sequence number of travelling carriage in group of being established when setting up and the professional connection resource size VoIP that is distributed of connecting of described VoIP, determine the particular location of the corresponding VoIP business packet of this travelling carriage in described uplink burst Resource Block.
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| CN2007101871762A CN101442806B (en) | 2007-11-21 | 2007-11-21 | Method for reducing ascending resource assignation overhead |
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| CN2007101871762A CN101442806B (en) | 2007-11-21 | 2007-11-21 | Method for reducing ascending resource assignation overhead |
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| CN101442806B true CN101442806B (en) | 2011-03-16 |
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| CN103781130A (en) * | 2012-10-25 | 2014-05-07 | 华为技术有限公司 | Network access method, network side equipment and terminal |
| EP3099091B1 (en) * | 2014-02-26 | 2024-04-10 | Huawei Technologies Co., Ltd. | Uplink resource allocation method, access terminal, and access point |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101043742A (en) * | 2006-06-28 | 2007-09-26 | 华为技术有限公司 | Method for allocating user resource distribution of wireless communication system |
| CN101064559A (en) * | 2006-04-30 | 2007-10-31 | 华为技术有限公司 | Resource distribution method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101064559A (en) * | 2006-04-30 | 2007-10-31 | 华为技术有限公司 | Resource distribution method and system |
| CN101043742A (en) * | 2006-06-28 | 2007-09-26 | 华为技术有限公司 | Method for allocating user resource distribution of wireless communication system |
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