CN100571204C - The transmission method of Optional Field and system thereof in the packet - Google Patents
The transmission method of Optional Field and system thereof in the packet Download PDFInfo
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- CN100571204C CN100571204C CNB2006100241709A CN200610024170A CN100571204C CN 100571204 C CN100571204 C CN 100571204C CN B2006100241709 A CNB2006100241709 A CN B2006100241709A CN 200610024170 A CN200610024170 A CN 200610024170A CN 100571204 C CN100571204 C CN 100571204C
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- 238000005516 engineering process Methods 0.000 abstract description 6
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Abstract
The present invention relates to mobile communication technology, disclose the transmission method and the system thereof of Optional Field in a kind of packet, make under the prerequisite that does not increase extra field correctly whether Optional Field exists in the designation data bag.Among the present invention, whether exist with the different filling mode indication Optional Fields of filling field.Typical filling mode is complete 0 or complete 1.Can be according to all or part of bit recognition filling mode of filling in the field.
Description
Technical field
The present invention relates to mobile communication technology, the particularly transmission of Optional Field in the packet.
Background technology
UMTS (Universal Mobile Telecommunication System, universal mobile telecommunications system) is one of global main at present 3G (Third Generation) Moblie (The Third Generation is called for short " 3G ") system.The UMTS system is made up of three parts, be core net (Core Network, abbreviation " CN "), universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial Radio Access Network, be called for short " UTRAN ") and subscriber equipment (User Equipment is called for short " UE ") composition.The interface definition of CN and UTRAN is the Iu interface, and the interface definition of UTRAN and UE is the Uu interface.
UMTS protocol version the earliest is R99, and in this version, the carrying of uplink and downlink business all is based on dedicated channel, and the message transmission rate that can reach is 384Kbps.But along with the user is more and more higher to the demand of transmitting high speed data, the procotol of having released R4, R5, R6 three phases is subsequently successively organized in the UMTS standard formulation, introduced high speed downlink packet access (High Speed DownlinkPacket Access, be called for short " HSDPA ") technology and high speed uplink packet access (High Speed UplinkPacket Access, be called for short " HSUPA ") technology, peak rate up to 14.4Mbps and 5.76Mbps can be provided respectively, simultaneously, also improved spectrum efficiency greatly.
The main feature of HSUPA comprises in the R6 version: adopt short frame of 2ms or 10ms frame, adopt mixed self-adapting repeat requests (Hybrid Automatic Repeat Request is called for short " HARQ "), up base station fast dispatch technology etc. in physical layer.In order to realize the high-efficiency transfer of user uplink data, HSUPA requires newly-increased two uplink physical channels for the user, one is enhancing Dedicated Physical Data Channel (the Enhanced-Dedicated Physical Data Channel of transmission data, be called for short " E-DPDCH "), another is the enhancing Dedicated Physical Control Channel (Enhanced-Dedicated Physical Control Channel is called for short " E-DPCCH ") of transmission accompanied by physical layer signaling.Except physical layer increases channel, in order to cooperate HSUPA, again at media interviews control (MediumAccess Control, abbreviation " MAC ") introduces MAC-e (e refers to strengthen) and two sublayers of MAC-es in the layer, to support HARQ and fast dispatch, simultaneously, can utilize MAC-e protocol Data Unit (MAC-e Protocol Data Unit, be called for short " MAC-e PDU ") carrier signaling and this signaling is read out at the MAC-e of base station layer.When in the MAC-e sublayer, forming MAC-e PDU, can multiplexing signaling MAC-es PDU, just a plurality of MAC-es PDU are integrated into MAC-e PDU.MAC-e and MAC-es are between physical layer and the MAC-d (d refers to special use).
Specifically, go up the agreement relevant at wireless air interface (Uu interface) and relate generally to physical layer, MAC layer and corresponding radio resource key-course (Radio Resource Control is called for short " RRC ") layer with E-DCH.Wherein, the MAC layer of E-DCH comprises MAC-e, MAC-es and three media access control sublayer of MAC-d again.In the UTRAN side, the MAC-e entity is in Node B, and the MAC-es entity is at service wireless network controller (Serving Radio Network Controller, be called for short " SRNC ") in, and, do not distinguish MAC-e and MAC-es in the UE side, they are present in the same functional unit.
As shown in Figure 1, transmitting terminal at E-DCH is the UE side, from Radio Link control (Radio LinkControl, abbreviation " RLC ") logic channel Dedicated Traffic Channel (the Dedicated Traffic Channel of layer, be called for short " DTCH ") and Dedicated Control Channel (Dedicated Control Channel, abbreviation " DCCH ") at first enters MAC-d and form MAC-d protocol Data Unit (Protocol Data Unit, be called for short " PDU "), the MAC-d PDU of same logic channel forms MAC-es PDU through MAC-es again, MAC-es PDU further forms MAC-e PDU again in MAC-e, after the E-DCH transmission channel is mapped to physical layer.
Wherein, MAC-esPDU comprises head and payload part, its structure as shown in Figure 2, the payload part of MAC-esPDU is that MAC-d PDU concatenated in order forms by N the MAC-es SDU from the identical size of same logic channel, and it is indicated that the size of MAC-d PDU is described indication (DDI) by supplemental characteristic.It is 6 bit transfer sequence numbers (TSN) fields that the head of MAC-es PDU has only a length, utilizes this field receiving terminal can recover original each MAC-es PDU time order and function order, thus the sequential delivery of guarantee information.
MAC-e PDU has head and payload part equally, its structure as shown in Figure 3, the payload part of MAC-e PDU comprises a plurality of multiplexing MAC-es PDU that together form, the length that optionally is used for up fast packet scheduling is the schedule information (SI) of 18 bits, and possible filling field, be used to make the length of MAC-e PDU to equal the E-DCH transport block length of appointment, the head of MAC-e PDU then is made of each MAC-es PDU relevant parameters DDI field and N field, the length of these two fields is 6 bits, in addition, the head of MAC-e PDU also comprises optional DDI0 field.
Receiving terminal at E-DCH, it is the UTRAN side, as shown in Figure 4, from the MAC-e PDU of E-DCH transmission channel at first the MAC-e demultiplexing in being present in Node B handle and form MAC-esPDU, be transferred to afterwards among the SRNC by after the processing such as MAC-es carries out that at first grand diversity is selected, reordered, decomposite each MAC-d PDU again and deliver to the MAC-d unit, after logic channel DTCH and DCCH deliver to rlc layer.
In the transmission of UTRAN side, the SI that is used for up fast packet scheduling is contained in the payload part of MAC-e PDU in the UE side, and its length is 18 bits.According to 3GPP protocol specification TS25.321v6.7.0, when UE is in the state that do not allow to send data (service authorization parameter SG is that special value " Zero_Grant " or all HARQ processes all are in non-active state) and when having new data to arrive in the up data buffer to need to send, and when UE is in the state that allows the transmission data, trigger the report of SI.Usually, under this two states, mainly be based on certain cycle to trigger SI, and representative value that should the triggering cycle is 2ms, 4ms, 10ms, 20ms, 50ms, 100ms, 200ms, 500ms, 1000ms equivalence.
In the prior art, according to whether transmitting the difference that SI and remaining bits are counted D, the form of MAC-e PDU has following four kinds of structures.Wherein, remaining bits is counted D deducts the contained n of a MAC-e PDU MAC-es PDU and corresponding n DDI that comprises and N field in MAC-e PDU head for the E-DCH transport block length the remaining bit number of length.
First kind of situation is MAC-e PDU when transmitting SI separately, and as shown in Figure 5, whole M AC-e PDU is made of the SI of this 18 bit long.
When remaining bits is counted D less than 18 bits, as shown in Figure 6, do not transmit SI, remaining bits is as filling bit.
Count D when remaining bits and be equal to or greater than 18 bits, but during less than 24 bits, as shown in Figure 7, with SI directly level be associated in the last of MAC-es PDU, remaining 0-5 bit is as filling bit.
When remaining bits is counted D and is equal to or greater than 24 bits, as shown in Figure 8, the SI level is associated in the last of MAC-esPDU, and is DDI0=" 111111 " at the last additional special DDI of MAC-e PDU head, be used to indicate the existence of SI, remaining bit is a filling bit.
In actual applications, such scheme exists following problem: UE to send unnecessary SI, increases the unnecessary processing burden of UE and Node B.
Cause the main cause of this situation to be, in existing MAC-e PDU form, when the remaining bit number of length that deducts the contained n of a MAC-e PDU MAC-es PDU and corresponding n DDI that comprises and N field when the E-DCH transport block length in MAC-e PDU head is equal to or greater than 18 bits, no matter whether SI needs to send, and the SI field all must be included in MAC-es PDU.Therefore, time beyond the SI triggered as normal, because the qualification of MAC-e PDU form, UE must send the SI report to Node B, in order to send the SI report, UE need upgrade SI report, and Node B need increase the unnecessary processing burden of UE and Node B according to reappraise ascending resource situation and carry out the distribution of resource of these unnecessary SI reports.
Summary of the invention
In view of this, main purpose of the present invention is to provide the transmission method and the system thereof of Optional Field in a kind of packet, makes under the prerequisite that does not increase extra field correctly whether Optional Field exists in the designation data bag.
For achieving the above object, the invention provides the transmission method of Optional Field in a kind of packet, comprise following steps:
At transmit leg, if the appointment Optional Field in the packet to be sent exists, then to exist first filling mode of described Optional Field to fill in the indication of the setting packet to be sent to filling field in this packet, otherwise not exist second filling mode of described Optional Field to fill filling field in this packet in the indication of the setting packet to be sent, described first filling mode is different from described second filling mode;
The recipient, fill the filling mode of field in the packet received of identification, if first filling mode then resolves described Optional Field, if second filling mode is then ignored the parsing to described Optional Field.
Wherein, described packet is the MAC-e protocol Data Unit during high speed uplink packet inserts, and described Optional Field is the schedule information field.
In this external described method, at transmit leg, if D 〉=24 then are provided for the sign of representing that head finishes between the head of MAC-e protocol Data Unit and payload part;
The recipient, if D＞24, according to the head and the payload part of described sign differentiation MAC-e protocol Data Unit;
Wherein, D deducts remaining bit number after the length of all contained MAC-es protocol Data Units of MAC-e protocol Data Unit and corresponding data description indication that comprises and N field in MAC-e protocol data unit head portion for the dedicated channel transport block length that strengthens.
In this external described method, long 6 bits of described sign, wherein all to fill out be 1 to each bit.
In this external described method, when D=18, in described MAC-e protocol Data Unit, necessarily comprise described Optional Field.
In this external described method, when D＜18, do not comprise described schedule information field in the packet, fill filling field in this packet with second filling mode.
In this external described method, described first filling mode is 1 for filling in the field that each bit all fills out;
Described second filling mode is 0 for filling in the field that each bit all fills out.
In this external described method, described recipient is according to all or part of content recognition filling mode in the described filling field.
The present invention also provides the transmission system of Optional Field in a kind of packet, comprises at transmit leg:
Fill the field generation module, be used for the filling field of packet to be sent being filled according to presetting filling mode;
The Optional Field judge module, be used for judging whether the appointment Optional Field of described packet exists, if exist then indicate described filling field generation module to exist first filling mode of described Optional Field to fill in the indication of the setting packet to be sent to filling field in this packet, otherwise not exist second filling mode of described Optional Field to fill filling field in this packet in the indication of the setting packet to be sent, described first filling mode is different from described second filling mode;
Sending module is used to send described packet;
Comprise the recipient:
Receiver module is used to receive described packet;
Parsing module is used for resolving each field of described packet;
The filling mode identification module, be used for discerning packet that described receiver module receives and fill the filling mode of field, if first filling mode, then indicate described parsing module that described Optional Field is resolved, if second filling mode, then indicate described parsing module to ignore parsing to described Optional Field.
Wherein, described system applies is in strengthening special uplink channel, and described packet is the MAC-e protocol Data Unit, and described Optional Field is the schedule information field.
By finding that relatively the main distinction of technical scheme of the present invention and prior art is whether exist with the different filling mode indication Optional Fields of filling field.Typical filling mode is complete 0 or complete 1.Can be according to all or part of bit recognition filling mode of filling in the field.
Difference on this technical scheme has brought comparatively significantly beneficial effect, and the method that whether Optional Field exists in a kind of new designation data bag promptly is provided.When being applied to the MAC-e PDU of E-DCH, can solve the problem that must send unnecessary SI report of the MAC-e PDU structure existence of E-DCH in the prior art, UE can select flexibly as required to send or not send the SI report, thus the increase of avoiding unnecessary SI report to cause to UE and Node B processing burden.
Description of drawings
Fig. 1 is a UE side E-DCH MAC structural representation in the prior art;
Fig. 2 is a UTRAN side E-DCH MAC structural representation in the prior art;
Fig. 3 is the structural representation of MAC-es PDU in the prior art;
Fig. 4 is the structural representation of MAC-e PDU in the prior art;
Fig. 5 is the structural representation that only sends MAC-e PDU under the situation of SI in the prior art;
Fig. 6 is the structural representation of MAC-e PDU when D is less than 18 bits in the prior art;
Fig. 7 be in the prior art D more than or equal to 18 bits the structural representation of MAC-e PDU during less than 24 bits;
Fig. 8 is the structural representation of MAC-e PDU when D is more than or equal to 24 bits in the prior art;
Fig. 9 is the method flow diagram according to UE side in the transmission method of Optional Field in the first embodiment of the invention packet;
Figure 10 is the method flow diagram according to base station side in the transmission method of Optional Field in the first embodiment of the invention packet;
Figure 11 is the transmission system structure chart according to Optional Field in the second embodiment of the invention packet.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Core of the present invention is, transmit leg determines whether the appointment Optional Field in the packet to be sent needs to exist, if specify Optional Field to exist, then fill filling field in this packet, otherwise fill filling field in this packet with second filling mode with first filling mode.After the recipient receives packet, discern in this packet the filling mode of filling field, if first filling mode then resolves Optional Field, if second filling mode is then ignored the parsing to Optional Field.
Below according to principle of the present invention, the transmission method of Optional Field in the first execution mode packet of the present invention is described.In the present embodiment, packet is the MAC-e PDU among the HSUPA, and Optional Field is the SI field, and its length is 18 bits.
The size that UE counts D according to remaining bits among the MAC-e PDU, and whether comprise SI, be provided with to sent MAC-e PDU.
As shown in Figure 9, in step 910, UE establish that the E-DCH transport block length deducts all contained MAC-es PDU of MAC-e PDU and the length of the corresponding data description indication that in MAC-e PDU head, comprises and N field after remaining bit number be D, judge that whether D is more than or equal to 24, if more than or equal to 24, then enter step 920, otherwise directly enter step 930.
In step 920, UE is provided with DDI0 between the head of MAC-e PDU and payload part.Specifically, for head and the payload part of distinguishing MAC-e PDU, UE is provided for representing the sign DDI0 that head finishes between MAC-e PDU head and payload part, long 6 bits of DDI0, and wherein all to fill out be 1 to each bit.Then enter step 930.
In step 930, UE judges whether D equals 18, if equal 18, then enters step 940, otherwise enters step 950.
In step 940, D equals at 18 o'clock, necessarily comprises SI among the MAC-e PDU, and does not have remaining bits, does not have the field that needs filling, does not fill.
In step 950, be not equal at D under 18 the situation, UE continues whether to judge D less than 18, if less than 18, then directly enters step 970, otherwise enter step 960.
In step 960, D is greater than 18, and UE judges among the MAC-e PDU to be sent whether comprise SI, if comprise SI, then enters step 980, otherwise enters step 970.
In step 970, when D can't comprise SI less than 18, perhaps D is not greater than 18 but when comprising SI, UE is with in the E-DCH transmission block, except contained all the MAC-es PDU of MAC-e PDU and corresponding data description indication that in MAC-e PDU head, comprises and N field, it is 0 that a remaining D bit is all filled out, and represents not comprise SI among the MAC-e PDU to be sent.
In step 980, D is greater than 18 and when comprising SI, UE is with in the E-DCH transmission block, except contained all MAC-es PDU, the SI of MAC-e PDU and corresponding data description indication that in MAC-e PDU head, comprises and N field, it is 1 that remaining (D-18) individual bit is all filled out, and represents to comprise SI among the MAC-e PDU to be sent.By residue being filled the different filling modes of field, effectively solve the problem that must send unnecessary SI report of the MAC-e PDU structure existence of E-DCH in the prior art, UE can select flexibly as required to send or not send the SI report, thus the increase of avoiding unnecessary SI report to cause to UE and Node B processing burden.
Resolve it after receiving MAC-e PDU from UE the base station.
As shown in figure 10, in step 1001, the base station is according to the length of known DDI and N field, and order is determined DDI and the N field of each MAC-es PDU of MAC-e PDU head.
In step 1002, the base station judges whether current DDI is the sign DDI0 that the expression head finishes, if then directly enter step 1008, otherwise then enter step 1003.
In step 1003, calculate among the MAC-e PDU base station, without remaining bit number D relatively.Then enter step 1004.
In step 1004, D is judged greater than 24 in the base station whether, if greater than 24, then returns step 1002, judges whether next DDI is DDI0, otherwise, if smaller or equal to 24, then enter step 1005.
In step 1005, D smaller or equal to 24 situation under, the base station continues whether to judge D greater than 18, if greater than 18, then enters step 1007, otherwise, then enter step 1006.
In step 1006, be not more than at D under 18 the situation, the base station continues to judge whether D equals 18, if equal 18, then necessarily comprises SI among the MAC-es PDU, enters step 1010, otherwise, then enter step 1011.
In step 1007, the base station judge MAC-es PDU the individual bit of inverse (D-24) whether all be filled to 0, if complete 0, then do not comprise SI among the MAC-es PDU, enter step 1011, if all be filled to 1, then comprise SI among the MAC-es PDU, enter step 1012.
In step 1008, head and the payload part of MAC-ePDU distinguished according to the sign DDI0 that finds in the step 1002 in the base station.Enter step 1009 afterwards.
In step 1009, identical with step 1007, the base station judge MAC-es PDU the individual bit of inverse (D-24) whether all be filled to 0, if complete 0, then do not comprise SI among the MAC-es PDU, enter step 1011, if all be filled to 1, then comprise SI among the MAC-es PDU, enter step 1012.
In step 1010, because D equals 18, so the base station determines that this D bit is a SI information, decomposes each MAC-es PDU and extracts SI, finishes the parsing of MAC-e PDU.
In step 1011 and since the individual bit of inverse (D-24) of MAC-es PDU whether all be filled to 0, so the base station determines not comprise SI among the MAC-es PDU, thereby decomposes each MAC-esPDU, and abandons remaining filling bit, finishes the parsing of MAC-e PDU.
In step 1012, since the individual bit of inverse (D-24) of MAC-es PDU whether all be filled to 1, so the base station determines to comprise SI among the MAC-es PDU, thereby decomposes each MAC-es PDU and extract SI, abandon remaining filling bit, finish the parsing of MAC-e PDU.
First execution mode of the present invention is illustrated the transmission method of Optional Field in the packet, and the transmission system to Optional Field in the second execution mode packet of the present invention describes in detail below.Native system is applied to HSUPA, and its packet is MAC-e PDU, and Optional Field is the SI field.
As shown in figure 11, the transmit leg of the transmission system of Optional Field is among the UE in packet, comprise and be used for according to presetting the filling field generation module that filling mode is filled the filling field of packet to be sent, be used for the Optional Field judge module whether the appointment Optional Field of judgment data bag exists, be used to send the sending module of packet.The recipient is in the base station, comprises the receiver module that is used to receive packet, is used for the parsing module of each field of resolution data bag, is used for discerning the filling mode identification module that packet that receiver module receives is filled the filling mode of field.
UE judges whether there is appointment Optional Field SI in the packet to be sent by the Optional Field judge module, if exist then indication is filled the field generation module and filled filling field in this packet with first filling mode, being about to that remaining filling field all fills out is 1, otherwise fill filling field in this packet with second filling mode, it is 0 that remaining filling field is all filled out.Afterwards, by sending module packet is sent to the base station.
The base station is by the packet of receiver module reception from UE, by the filling mode identification module filling mode of filling field in the packet is discerned, if first filling mode, promptly all be filled to 1, then show to comprise Optional Field SI in the packet, thereby the indication parsing module is resolved SI, if second filling mode, promptly all be filled to 0, then show not comprise Optional Field SI in the packet, thereby the indication parsing module is ignored the parsing to Optional Field SI.
The transmission method of Optional Field and first execution mode are roughly the same in the third embodiment of the invention packet, its difference only is in first execution mode that first filling mode is 1 for filling in the field that all bits all fill out, second filling mode is 0 for filling in the field that all bits all fill out, first filling mode is 1 for filling in the field that all bits all fill out in the present embodiment, or all to fill out be 0, second filling mode is 1 for filling in the field that all bits do not fill out entirely, or not fill out entirely be 0.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. the transmission method of Optional Field in the packet is characterized in that, comprises following steps:
At transmit leg, if the appointment Optional Field in the packet to be sent exists, then to exist first filling mode of described Optional Field to fill in the indication of the setting packet to be sent to filling field in this packet, otherwise not exist second filling mode of described Optional Field to fill filling field in this packet in the indication of the setting packet to be sent, described first filling mode is different from described second filling mode;
The recipient, fill the filling mode of field in the packet received of identification, if first filling mode then resolves described Optional Field, if second filling mode is then ignored the parsing to described Optional Field.
2. the transmission method of Optional Field is characterized in that in the packet according to claim 1, and described packet is the MAC-e protocol Data Unit during high speed uplink packet inserts, and described Optional Field is the schedule information field.
3. the transmission method of Optional Field is characterized in that in the packet according to claim 2, at transmit leg, if D 〉=24 then are provided for the sign of representing that head finishes between the head of MAC-e protocol Data Unit and payload part;
The recipient, if D＞24, according to the head and the payload part of described sign differentiation MAC-e protocol Data Unit;
Wherein, D deducts remaining bit number after the length of all contained MAC-es protocol Data Units of MAC-e protocol Data Unit and corresponding data description indication that comprises and N field in MAC-e protocol data unit head portion for the dedicated channel transport block length that strengthens.
4. the transmission method of Optional Field is characterized in that in the packet according to claim 3, long 6 bits of described sign, and wherein all to fill out be 1 to each bit.
5. the transmission method of Optional Field is characterized in that in the packet according to claim 3, when D=18, necessarily comprises described Optional Field in described MAC-e protocol Data Unit.
6. the transmission method of Optional Field is characterized in that in the packet according to claim 5, when D＜18, does not comprise described schedule information field in the packet, fills filling field in this packet with second filling mode.
7. the transmission method of Optional Field is characterized in that in the packet according to claim 2, and described first filling mode is 1 for filling in the field that each bit all fills out;
Described second filling mode is 0 for filling in the field that each bit all fills out.
8. according to the transmission method of Optional Field in each described packet in the claim 1 to 7, it is characterized in that described recipient is according to all or part of content recognition filling mode in the described filling field.
9. the transmission system of Optional Field in the packet is characterized in that, comprises at transmit leg:
Fill the field generation module, be used for the filling field of packet to be sent being filled according to presetting filling mode;
The Optional Field judge module, be used for judging whether the appointment Optional Field of described packet exists, if exist then indicate described filling field generation module to exist first filling mode of described Optional Field to fill in the indication of the setting packet to be sent to filling field in this packet, otherwise not exist second filling mode of described Optional Field to fill filling field in this packet in the indication of the setting packet to be sent, described first filling mode is different from described second filling mode;
Sending module is used to send described packet;
Comprise the recipient:
Receiver module is used to receive described packet;
Parsing module is used for resolving each field of described packet;
The filling mode identification module, be used for discerning packet that described receiver module receives and fill the filling mode of field, if first filling mode, then indicate described parsing module that described Optional Field is resolved, if second filling mode, then indicate described parsing module to ignore parsing to described Optional Field.
10. the transmission system of Optional Field is characterized in that in the packet according to claim 9, and described system applies is in strengthening special uplink channel, and described packet is the MAC-e protocol Data Unit, and described Optional Field is the schedule information field.
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| CNB2006100241709A CN100571204C (en) | 2006-02-27 | 2006-02-27 | The transmission method of Optional Field and system thereof in the packet |
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