CN101415225B - Method and apparatus for notifying scheduling type - Google Patents

Abstract

The invention discloses a scheduling type notification method. The method comprises the following steps: a multihop relay base station (MR-BS) sends a scheduling type adopted by an MR system to an RS before the MR-BS and the RS register a subprocess; and the RS determines a self-scheduling type according to the received scheduling type. By the method of the embodiment of the invention, the access RS can know the scheduling type adopted by the MR system during the initial ranging, and the scheduling types are uniformly notified to the RS by the MR-BS, which avoids burden on the MR-BS brought by determining the scheduling type in a consultation manner.

Description

A kind of scheduling type Notification Method and device

Technical field

The present invention relates to the mobile communication technology field, particularly relate to a kind of scheduling type Notification Method and device.

Background technology

Along with the continuous development of the communication technology, the requirement of communication system access rate is also being improved constantly, for satisfying the requirement of access rate, adopt the communication system of BWA (Broadband WirelessAccess, broadband wireless access) mode more and more to come into one's own.

Communication system based on IEEE 802.16e standard is exactly a kind of BWA communication system.According to the radio communication theory as can be known, the high more then radio wave of tranmitting frequency is fast more with range attenuation.Because the operating frequency of 802.16e communication system is than higher, so BS (base station, base station) is owing to radio wave attenuation comparatively fast causes coverage very limited.For this reason, the 16j task groups of IEEE 802 working groups is being set up multi-hop wireless relay communications system standard, make new system can support MS (mobilestation based on the 802.16e standard, travelling carriage) by 1 or a plurality of RS (relay station, relay station) with MR-BS (Multihop relay base station, multi-hop relay base station) communicate, wherein RS carries out information interaction by air interface and MR-BS, MS or other MR-RS.In traditional cellular network, the wireless connections between MR-BS and the MS are direct wireless connections, just adopt the notion of single-hop.Along with the development of mobile communication technology, by between MR-BS and MS, having increased one or more RS, be responsible for wireless signal being done once or repeatedly being transmitted, that is to say that wireless signal will could arrive MS through multi-hop.

In current 802.16j system, RS can be divided into transparent RS and nontransparent RS, and the scheduling mode of RS also can be divided into two kinds of distributed scheduling and centralized schedulings.Wherein, for nontransparent RS, both can adopt distributed scheduling also can adopt centralized scheduling.When adopting different scheduling modes, MR-BS needs to take different scheduling flows with RS, when RS initially inserts, the scheduling mode of MR-BS and RS is unified, the scheduling type that is whole M R system need be consistent, RS could be according to the scheduling type of system like this, take different bandwidth request modes: such as, under the centralized scheduling mode, need to send the CDMA sign indicating number that distributes under the centralized scheduling mode, and under the distributed scheduling mode, then need to send the code word of distributing under the distributed way.

As shown in Figure 1, for prior art RS enters flow through a network figure, may further comprise the steps:

Step S101 searches down link.

Step S102, the down-going synchronous link establishment.

Step S103 reads the DCD message of MR system broadcasts.

Step S104 obtains uplink parameter.

Step S105, initial ranging is also adjusted automatically.

Step S106 carries out basic capability negotiating.

Step S107, RS authentication subprocess.

Step S108 registers subprocess with MR-BS.

Step S109, Path selection.

Step S110, RS configuration operation parameter.

In the prior art when step S108, RS reports the scheduling type that this RS adopts by register request message to MR-BS, or MR-BS is by the scheduling type of enrollment response message to RS notice MR system, thereby the scheduling type that makes MR-BS and RS obtain the other side mutually to be adopted is determined the scheduling type of MR system afterwards through the negotiation of MR-BS and RS.

In realizing embodiment of the invention process, the inventor finds that there are the following problems at least in the prior art:

1, stipulates according to the flow process of current 802.16j, the registration subprocess is to occur in after initial ranging, basic capability negotiating, the authentication subprocess, that is to say that RS has only by obtaining the scheduling type that MR-BS adopts after initial ranging, basic capability negotiating, the authentication subprocess.Yet RS just needs bandwidth on demand when range finding, basic capability negotiating, authentication, and need take different bandwidth request CDMA code word according to different scheduling types, therefore in the prior art RS to obtain the scheduling type of MR-BS slower, the needs of bandwidth on demand in the time of can't satisfying range finding, basic capability negotiating, authentication.

2, to the MR system, the scheduling type of whole M R system must remain unanimity, and promptly all RS must be identical with the scheduling mode of MR-BS.If finish by consulting between RS and the MR-BS,, determine that so through consultation the mode of scheduling type can be brought unnecessary burden to MR-BS if the RS quantity so under the MR-BS is bigger.

3, in the initial ranging response message, to distribute special-purpose bandwidth request code word, if MR-BS under the situation of not knowing the RS scheduling type, will not know which type of ranging code this distributes for RS to RS.

Summary of the invention

The purpose of the embodiment of the invention provides a kind of scheduling type Notification Method and device, can make to insert the scheduling type that RS just can learn that when initial ranging the MR system adopts.

For achieving the above object, the embodiment of the invention proposes a kind of scheduling type Notification Method on the one hand, may further comprise the steps: multi-hop relay base station MR-BS is before relay station RS and described MR-BS register subprocess, and the scheduling type that multi-hop relay MR system is adopted sends to described RS; Described RS determines the scheduling type of self according to the scheduling type that receives.

On the other hand, the embodiment of the invention also provides a kind of multi-hop relay base station MR-BS, comprise that scheduling type issues module, be used for before relay station RS and described MR-BS register subprocess that the scheduling type that multi-hop relay MR system is adopted sends to described RS; , described scheduling type issues module and comprises:

Downlink channel is described DCD information broadcast submodule, is used for by the DCD message of broadcasting the scheduling type that described MR system adopts being sent to described RS;

Ranging response RNG_RSP message sends submodule, is used for when initial ranging by RNG_RSP message the scheduling type that described MR system adopts being sent to described RS.

The technical scheme of the embodiment of the invention has the following advantages, can make by the embodiment of the invention and to insert the scheduling type that RS just can learn the employing of MR system when the initial ranging, and scheduling type has avoided determining through consultation the burden that scheduling type brings to MR-BS by the unified notice of MR-BS RS.

Description of drawings

Fig. 1 enters flow through a network figure for prior art RS;

Fig. 2 is an embodiment of the invention scheduling type Notification Method flow chart;

Fig. 3 is an embodiment of the invention MR-BS structure chart.

Embodiment

Below in conjunction with drawings and Examples, true body execution mode of the present invention is described in further detail:

As shown in Figure 2, be embodiment of the invention scheduling type Notification Method flow chart, may further comprise the steps:

Step S201, MR-BS are before RS and MR-BS register subprocess, and the scheduling type that the MR system is adopted sends to RS.

The embodiment of the invention had proposed two kinds before RS and MR-BS register subprocess, and the scheduling type that the MR system is adopted sends to the mode of RS.Need to prove that following dual mode is the more excellent embodiment of the present invention, also can be by other message informings RS before RS and MR-BS register subprocess.

Mode one: MR-BS sends to RS by DCD (downlink channel description) message of broadcasting with the scheduling type that the MR system adopts.

As a preferred embodiment, the embodiment of the invention makes it can carry the scheduling type that the MR system adopts by expansion DCD message.Newly-increased TLV (Type-Length-Value, type-length-value, a kind of form) in DCD message, newly-increased TLV carries the scheduling type that the MR system adopts in this DCD message, and is as shown in the table:

The Name title	The Type type	Length length	The Value value	The Scope scope
					Scheduling Type scheduling type	TBD	?1	0b0000: distributed scheduling 0b0001: centralized scheduling 0b0010-0b1111: keep	OFDMA

The embodiment of the invention will be worth 0b0000 and be decided to be distributed scheduling, will be worth 0b0001 and be decided to be centralized scheduling, will be worth 0b0010-0b1111 and be made as reservation.The above-mentioned method of salary distribution only be embodiment of the present invention for example, it is any that the variation corresponding with scheduling mode all should be embodiment of the invention protection range and contains about above-mentioned value.

Mode two, MR-BS sends to RS by RNG_RSP (Ranging Response, ranging response) message with the scheduling type that the MR system adopts when initial ranging.

As a preferred embodiment, the embodiment of the invention makes it can carry the scheduling type that the MR system adopts by expansion RNG_RSP message.Newly-increased TLV in RNG_RSP message, newly-increased TLV carries the scheduling type that the MR system adopts in this RNG RSP message, and is as shown in the table:

The Name title

The Type type

Length length

The Value value

Scheduling Type scheduling type

TBD

?1

0b0000: distributed scheduling 0b0001: centralized scheduling 0b0010-0b1111: keep

The foregoing description will be worth 0b0000 and be decided to be distributed scheduling, will be worth 0b0001 and be decided to be centralized scheduling, will be worth 0b0010-0b1111 and be made as reservation.The same above-mentioned method of salary distribution only be embodiment of the present invention for example, it is any that the variation corresponding with scheduling mode all should be embodiment of the invention protection range and contains about above-mentioned value.

Step S202, RS determine the scheduling type of self according to the scheduling type that receives.For example obtain the scheduling type that the MR system adopts according to DCD message of receiving or the value in the RNG_RSP message.As the value in DCD message or the RNG_RSP message is 0b0000, and then RS is decided to be distributed scheduling with self scheduling type.Be notified to RS by the unified scheduling type that the MR system is adopted of MR-BS like this, avoided determining through consultation the burden that scheduling type brings to MR-BS.

Can make by the foregoing description and to insert RS and just can learn the scheduling type that the MR system adopts when the initial ranging, and scheduling type is by the unified notice of MR-BS RS, the burden of having avoided definite through consultation scheduling type to bring to MR-BS.

As shown in Figure 3, be embodiment of the invention MR-BS structure chart, this multi-hop relay base station MR-BS 100 comprises that scheduling type issues module 110, is used for before RS and MR-BS register subprocess, and the scheduling type that the MR system is adopted sends to described RS.

Wherein, scheduling type issues module 110 and comprises DCD information broadcast submodule 111, is used for by the DCD message of broadcasting the scheduling type that the MR system adopts being sent to RS.

Wherein, scheduling type issues module 110 and comprises that RNG_RSP message sends submodule 112, is used for by RNG_RSP message the scheduling type that the MR system adopts being sent to RS when initial ranging.

By above-mentioned MR-BS, can unify the scheduling type that the MR system adopts is notified to RS, and can make access RS when initial ranging, just learn the scheduling type that the MR system adopts.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.

The above only is a preferred implementation 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 (6)

1. a scheduling type Notification Method is characterized in that, may further comprise the steps:

Multi-hop relay base station MR-BS is before relay station RS and described MR-BS register subprocess, and the scheduling type that multi-hop relay MR system is adopted sends to described RS;

Described RS determines the scheduling type of self according to the scheduling type that receives.

2. scheduling type Notification Method according to claim 1 is characterized in that, the described scheduling type that the MR system is adopted sends to RS and specifically comprises:

Described MR-BS describes DCD message by the downlink channel of broadcasting the scheduling type that described MR system adopts is sent to described RS.

3. as scheduling type Notification Method as described in the claim 2, it is characterized in that the scheduling type that the DCD message of described MR-BS by broadcasting adopts the MR system sends to described RS and obtains by following steps:

Newly-increased type-length-value TLV in described DCD message, newly-increased TLV carries the scheduling type that described MR system adopts in the described DCD message.

4. scheduling type Notification Method according to claim 1 is characterized in that, the described scheduling type that the MR system is adopted sends to RS and specifically comprises:

Described MR-BS sends to described RS by RNG_RSP message with the scheduling type that described MR system adopts when initial ranging.

5. as scheduling type Notification Method as described in the claim 4, it is characterized in that the scheduling type that described MR-BS adopts described MR system by RNG_RSP message sends to described RS and obtains by following steps when initial ranging:

Newly-increased TLV in described RNG_RSP message, newly-increased TLV carries the scheduling type that described MR system adopts in the described RNG_RSP message.

6. multi-hop relay base station MR-BS, it is characterized in that, comprise that scheduling type issues module, be used for before relay station RS and described MR-BS register subprocess, the scheduling type that multi-hop relay MR system is adopted sends to described RS, and described scheduling type issues module and comprises:

Downlink channel is described DCD information broadcast submodule, is used for by the DCD message of broadcasting the scheduling type that described MR system adopts being sent to described RS;

Ranging response RNG_RSP message sends submodule, is used for when initial ranging by RNG_RSP message the scheduling type that described MR system adopts being sent to described RS.

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