CN100550692C - A kind of method of reconfiguration of common transfer channel - Google Patents
A kind of method of reconfiguration of common transfer channel Download PDFInfo
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- CN100550692C CN100550692C CNB2006100801645A CN200610080164A CN100550692C CN 100550692 C CN100550692 C CN 100550692C CN B2006100801645 A CNB2006100801645 A CN B2006100801645A CN 200610080164 A CN200610080164 A CN 200610080164A CN 100550692 C CN100550692 C CN 100550692C
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Abstract
The invention discloses a kind of method of reconfiguration of common transfer channel, this method at first increases the channel code information parameter of reshuffling in the Common transport channel reconfiguration message, this method also comprises: a.RNC is that Common transport channel is redistributed channel code, the relevant information of the channel code redistributed is arranged on reshuffling in the channel code information parameter of Common transport channel reconfiguration message, and this Common transport channel reconfiguration message is sent to NodeB; B.NodeB obtains the channel code relevant information in the channel code information parameter of reshuffling of Common transport channel reconfiguration message, and to utilize the pairing channel code of this channel code relevant information be that this Common transport channel sends signal.The invention solves and to carry out the problem that channel code is reshuffled to Common transport channel.The present invention program realized the reshuffling of the channel code of Common transport channel, thereby some channel code that need distribute to other channel can be freed out, to improve the resource utilization of channel code in the sub-district.
Description
Technical field
The present invention relates to the wireless communication technique field, relate to the method for a kind of reconfiguration of common transfer channel in the Wideband Code Division Multiple Access (WCDMA) (WCDMA) or rather.
Background technology
In the WCDMA system, down channel is distinguished by the combination of scrambler and channel code.
After a specific channel code was assigned to a subscriber equipment, this subscriber equipment can use the pairing channel resource of this channel code.Because between the different channel code is quadrature, therefore can distinguish subscriber equipment for different subscriber equipmenies by distributing different channel code.
The size of the channel code of down channel also is the size of the spreading factor (SF) of channel code, has determined the bandwidth of the channel resource that subscriber equipment can use, and the subscriber equipment data volume that can send in the unit interval what also are.Therefore, in the WCDMA system,, be easy in a system, realize the business of different rates requirement, such as multimedia service by being the different channel code of different user devices allocated size.
Scrambler for down channel, each sub-district in the WCDMA system can be used a plurality of scramblers simultaneously, comprise a necessary main scrambler and maximum 15 optional time scramblers, and each scrambler code tree of a corresponding channel code all, every code tree has the channel code of equal number.Based on this set, in theory, the channel code resource in the sub-district can improve by the number that increases scrambler.But in general, consider the complexity of system and the mutual interference mutually of interchannel, a scrambler is all only used in most of sub-district, promptly main scrambler.Obviously this just makes that the channel code resource is relatively limited in the sub-district.Thus, in the WCDMA system, how to use effectively and distribute limited channel code resource to become a key issue of RRM.Channel code resource allocation good, corresponding resource utilization is just high, and the subscriber equipment that system can insert under same case is also just more, especially all the more so under the unrestricted situation of other resource.
In the 5th version of WCDMA technology, introduced this key property of high speed downlink packet access (HSDPA, High Speed Downlink Packet Access).HSDPA has realized descending high speed data transfer by the key technologies such as fast dispatch of adaptive modulation and coding (AMC), mixing re-transmission (HARQ) and base station.
After having introduced HSDPA, correspondingly having increased by three kinds of channels, is respectively the high-speed physical downlink shared channel (HS-PDSCH) (HS-PDSCH) in downlink transmission data information, the High-Speed Shared Control Channel (HS-SCCH) of transmission Downlink Control Information and the High-Speed Dedicated Physical Control Channel (HS-DPCCH) of transmission uplink feedback information.
Wherein, for the HS-PDSCH channel, the operable HS-PDSCH channel in sub-district can reach 15 at most, and the SF of the employed channel code of HS-PDSCH channel is fixed as 16.Distribute to the channel code of HS-PDSCH and distribute, and the channel code of distributing to HS-PDSCH must be continuous by network controller (RNC).
Figure 1 shows that a kind of allocative decision based on the channel code of HSDPA.Fig. 1 is to be that 4 channel code of rightmost of 16 are distributed to the HS-PDSCH channel with SF, and the sign indicating number of these four channel code number is 12,13,14 and 15.In addition other channel code then can be distributed to the dedicated channel that is used to transmit the Common transport channel of broadcasting service and is used for transmitting real-time service.
The sudden high data service of the general carrying of HSDPA, therefore in certain period the more situation of data service may appear, in light of this situation, at present in communication process, RNC can be according to the real time business and the conditions of demand that are carried on the data service on the HS-PDSCH channel that are carried in the sub-district on the dedicated channel, rationally adjust the channel code number of distributing to the HS-PDSCH channel, to satisfy the transmission of sudden high data service.Such as, in the sub-district data traffic requirement height and real time business after a little while, RNC can by adjust will be adjacent with four channel code of having distributed the 5th channel code distribute to HS-PDSCH, the sign indicating number of the 5th channel code number is 11, SF still is 16.
Certainly, in carrying out above-mentioned adjustment, RNC is that the channel code that HS-PDSCH increases must be in idle condition, and promptly the subcode under this channel code or this sign indicating number is not distributed to any channel.If dedicated channel is being used the subcode under this channel code, then needing RNC is other channel code of this channel allocation, so that this channel code becomes the free time.
Such as, sometime, the subscriber equipment of a voice communication has used that SF among Fig. 1 is 128, sign indicating number number is 95 channel code, and this moment SF be 16 and sign indicating number number be also to have only this subcode by voice user's hold facility in all channel code of 11 channel code branch, then RNC can redistribute the channel code of other yard number for the channel of this subscriber equipment correspondence, such as with SF be 128 and sign indicating number number be that 4 channel code is distributed to this subscriber equipment.Thereby make SF be 16 and sign indicating number number be that subcode under 11 the channel code all be the free time.Like this, when the increase in demand of data service, RNC can be with this SF 16 and sign indicating number number be that 11 channel code is distributed to the HS-PDSCH channel.
But only realized that at dedicated channel channel heavily distributes at present, and in fact not only dedicated channel may take the channel code that need distribute to the HS-PDSCH channel, Common transport channel also may take the channel code in this channel code and the branch thereof, at some in particular cases, also the situation that Common transport channel and dedicated channel take the channel code that need distribute to the HS-PDSCH channel simultaneously may appear.In these cases, present method can't be the more channel code of HS-PDSCH channel allocation when needed then, has reduced the channel code resource utilization.In addition, also have some other situations and need be optimized distribution to the channel code resource, owing to can not carry out reshuffling of channel code to Common transport channel at present, this just may cause carrying out reasonable optimizing to the channel code resource and distribute.
Summary of the invention
In view of this, subject matter to be solved by this invention is to provide a kind of method of reconfiguration of common transfer channel, is that Common transport channel reconfigures channel code by this method.
For overcoming the above problems, the invention provides following technical scheme:
A kind of method of reconfiguration of common transfer channel increases the channel code information parameter of reshuffling in the Common transport channel reconfiguration message, this method may further comprise the steps:
A.RNC is that Common transport channel is redistributed channel code, the information setting of the channel code redistributed the reshuffling in the channel code information parameter of Common transport channel reconfiguration message, and is sent to base station (NodeB) with this Common transport channel reconfiguration message;
B.NodeB obtains the information of reshuffling the channel code in the channel code information parameter of the Common transport channel reconfiguration message of receiving, and utilizes the pairing channel code of information of this channel code to send signal for this Common transport channel.
Among the described step a, described RNC is that Common transport channel is redistributed before the channel code, may further include: determine that the current shared channel code of Common transport channel is to distribute to the correlated channels sign indicating number of the channel code of other channel except that Common transport channel.
Among the described step a, described RNC is that Common transport channel is redistributed before the channel code, can further include: determine currently need be that other channel except that Common transport channel increases distributing channel mode, and the current shared channel code of this Common transport channel is that current needs are distributed to the channel code that the channel code of described other channel is correlated with.
The correlated channels sign indicating number of described channel code is: this channel code itself, perhaps the father's sign indicating number or the subcode of this channel code.
Described other channel is high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH.
Described step b may further include: NodeB returns acknowledge message to RNC;
Correspondingly, this method may further include: RNC determines that the channel code that this Common transport channel took originally is in idle condition after receiving acknowledge message.
Described channel code information parameter comprises: the spreading factor of channel code and the sign indicating number number.
The present invention program is by increasing the relevant information of the channel code of reshuffling in the Common transport channel reconfiguration message, and initiate reconfiguration course when needed to Common transport channel by RNC, thereby the channel code that makes it possible to some need be distributed to other channel except that Common transport channel frees out, for the utilance that improves channel code resource in the sub-district provides effective way.
For the HS-PDSCH channel, when data traffic requirement increases in the sub-district, channel code with the shared channel code of HS-PDSCH channel next-door neighbour can be freed out by the present invention program, thereby improved the number of the channel code that the HS-PDSCH channel can use, when improving sub-district HSDPA throughput, also improved the channel code level of resources utilization of sub-district.
Description of drawings
Fig. 1 is a channel code allocative decision schematic diagram of the prior art;
Fig. 2 is the realization flow figure of the specific embodiment of the invention;
Fig. 3 is the channel code allocative decision schematic diagram in the specific embodiment of the invention;
Fig. 4 is the another kind of channel code allocative decision schematic diagram in the specific embodiment of the invention.
Embodiment
For the Common transport channel of having set up, network can reconfigure it, specifically is to finish by Common transport channel reconfiguration message (COMMON TRANSPORT CHANNELRECONFIGURATION) at present.The main contents that this message comprises are as shown in table 1.
By following table 1 as can be seen, for the Common transport channel of having set up, at present RNC can reconfigure has only power information, that is to say that RNC can only adjust these channel transmitting power sizes.
| Parameter name | Parameter area |
| Type of message | Integer (0..255) |
| The Common transport channel reconfiguration information | |
| ＞SCCPCH channel parameter | |
| ＞＞FACH channel parameter | |
| ＞＞＞ |
0～255 |
| The maximum FACH channel emission power of＞＞＞ | -35.0～+15.0dB |
| ＞＞＞ |
0..1279 |
| ＞＞PCH channel parameter | |
| ＞＞＞ |
0～255 |
| The maximum PCH channel emission power of＞＞＞ | -35.0～+15.0dB |
| ＞＞＞ |
0..1279 |
| ＞＞PICH channel parameter | |
| ＞＞＞transmission channel numbering | 0～255 |
| The PICH of＞＞＞channel power | -35.0～+15.0dB |
| The parameter of＞other channel | |
| ... |
Table 1
In view of above situation, the present invention program increases the channel code information parameter reshuffle in the Common transport channel reconfiguration message shown in the table 1, and this channel code information parameter specifically can comprise the sign indicating number number of the size of spreading factor and channel code.Message content after the increase is as shown in table 2.
| Parameter name | Parameter area |
| Type of message | Integer (0..255) |
| The Common transport channel reconfiguration information | |
| ＞SCCPCH channel parameter | |
| ＞＞FACH channel parameter | |
| ＞＞＞ |
0～255 |
| The maximum FACH channel emission power of＞＞＞ | -35.0～+15.0dB |
| ＞＞＞ |
0..1279ms |
| ＞＞PCH channel parameter | |
| ＞＞＞ |
0～255 |
| The maximum PCH channel emission power of＞＞＞ | -35.0～+15.0dB |
| ＞＞＞ |
0..1279ms |
| ＞＞PICH channel parameter | |
| ＞＞＞ |
0～255 |
| The PICH of＞＞＞channel power | -35.0～+15.0dB |
| The channel code information of＞＞reshuffle | |
| ＞＞＞spreading |
4～256 |
| ＞＞＞channel code sign indicating |
0～255 |
| ... |
Table 2
Can reshuffle Common transport channel when needed afterwards.Because the current shared channel code of Common transport channel is no matter be the correlated channels sign indicating number other which kind of channel needs except that Common transport channel maybe may need the channel code used, therefore down all can adopt identical reconfiguration process scheme, mask body is example with the current shared channel code of Common transport channel for the correlated channels sign indicating number of the channel code that can distribute to the HS-PDSCH channel.Wherein, the channel code that Common transport channel is shared, promptly said correlated channels sign indicating number may just in time be the channel code itself that can distribute to the HS-PDSCH channel, also may be the father's sign indicating number or the subcode of this channel code.No matter this correlated channels sign indicating number is any, can reshuffle according to processing scheme of the present invention.
Specifically, based on the Common transport channel reconfiguration message shown in the table 2, if it is the current correlated channels sign indicating number that can distribute to the channel code of HS-PDSCH channel that RNC determines the current shared channel code of Common transport channel, it promptly is the channel code itself that to distribute to the HS-PDSCH channel, or the father's sign indicating number or the subcode of this channel code, then when increasing distributing channel mode for HS-PDSCH, can distribute immediately by needs for guaranteeing, RNC can initiate the reconfiguration course of Common transport channel, this reconfiguration course specifically may further comprise the steps as shown in Figure 2:
In step 202, NodeB can also reply an acknowledge message to RNC, and RNC determines that the more original shared channel code of Common transport channel has been in idle condition after receiving the affirmation message that NodeB sends.
By above reconfiguration process, the original shared channel code of Common transport channel can be freed out.RNC can distribute to HS-PDSCH by Physical Shared Channel reconfiguration message (physical channelreconfiguration) with the channel code of the required HS-PDSCH of distributing to channel when needed.
Certainly, RNC can need be that the HS-PDSCH channel increases distributing channel mode determining current also, and after the subcode of the channel code of the current required HS-PDSCH of distributing to taken by Common transport channel, carries out processing shown in Figure 2 again.
The present invention program can be applied in the allocative decision shown in Figure 3, suppose that network is that a broadcasting service has been distributed a Common transport channel sometime, this channel has used that spreading factor is 64, sign indicating number number is 42 channel code, current HS-DPSCH channel occupancy spreading factor be 16, sign indicating number number is 5 channel code of 11～15, and spreading factor is 16, sign indicating number number is that all the other subcodes below 10 the channel code all do not have occupied.As seen from Figure 3, the subcode that spreading factor is 64, sign indicating number number is that 42 channel code is that spreading factor is 16, sign indicating number number is 10 channel code, in this case, before redistributing other channel code for this Common transport channel, spreading factor is 16, sign indicating number number is that 10 channel code can not be assigned to the HS-PDSCH channel and uses, even spreading factor is 16, sign indicating number all is in idle condition than 10 littler channel code.At above-mentioned situation, the subcode that suppose that spreading factor is 16, sign indicating number number is 0 channel code all is in idle condition, then can use the present invention program that the channel code of this Common transport channel is reshuffled, such as, can be 64 with spreading factor, sign indicating number number is that 3 channel code is reshuffled to this Common transport channel, thereby make that spreading factor is 64, sign indicating number number is that 42 channel code is in idle condition, so make that spreading factor is 16, sign indicating number number is that 10 channel code is in idle condition.Afterwards, this spreading factor is 16, sign indicating number number is that 10 channel code is that the configurable HS-PDSCH channel of giving uses.
Obviously, the channel code of HS-PDSCH is current to be taken simultaneously by Common transport channel and dedicated channel if the required increase of RNC is distributed to, then RNC can initiate the reconfiguration course of Common transport channel and dedicated channel, reshuffle finish after, the original shared channel code of Common transport channel promptly is in idle condition, therefore is that 16 channel code is distributed to the HS-PDSCH channel with the pairing spreading factor of this channel code.
Specifically, suppose that the some time is carved with two Common transport channels, having used spreading factor respectively is 64, sign indicating number number is 40 and 41 channel code, also has a dedicated channel, having used spreading factor is 128, sign indicating number number is 87 channel code, as shown in Figure 4, these several channel code all are that spreading factor is 16, sign indicating number number is the subcode under 10 the channel code, in order to be 16 with spreading factor, sign indicating number number is that 10 channel code frees out, then can adopt the present invention program is that two Common transport channels are reshuffled channel code, and be that dedicated channel is reshuffled channel code according to existing scheme, such as, can be 32 with spreading factor, sign indicating number number is that 2 and 3 channel code is reshuffled to Common transport channel, and be 128 with spreading factor, sign indicating number number is that 3 channel code is reshuffled to dedicated channel, thereby guarantees that spreading factor is 16, sign indicating number number is that 10 channel code is in idle condition.
What the Common transport channel among above-mentioned Fig. 3 and Fig. 4 took all is subcodes of the channel code of the required HS-PDSCH of distributing to channel.Obviously, if taken this channel code itself, then reshuffle the back and directly just this channel code has been discharged; If taken father's sign indicating number of this channel code, also this channel code can be discharged after then reshuffling.
The above only is the present invention program's preferred embodiment, not in order to limit protection scope of the present invention.
Claims (7)
1. the method for a reconfiguration of common transfer channel is characterized in that, increases the channel code information parameter of reshuffling in the Common transport channel reconfiguration message, and this method may further comprise the steps:
A. radio network controller (RNC) is that Common transport channel is redistributed channel code, the information setting of the channel code redistributed the reshuffling in the channel code information parameter of Common transport channel reconfiguration message, and is sent to base station node B with this Common transport channel reconfiguration message;
B.NodeB obtains the information of reshuffling the channel code in the channel code information parameter of the Common transport channel reconfiguration message of receiving, and utilizes the pairing channel code of information of this channel code to send signal for this Common transport channel.
2. method according to claim 1, it is characterized in that among the described step a, described RNC is that Common transport channel is redistributed before the channel code, further comprises: determine that the current shared channel code of Common transport channel is to distribute to the correlated channels sign indicating number of the channel code of other channel except that Common transport channel.
3. method according to claim 1, it is characterized in that among the described step a, described RNC is that Common transport channel is redistributed before the channel code, further comprise: determine currently need be that other channel except that Common transport channel increases distributing channel mode, and the current shared channel code of Common transport channel is the correlated channels sign indicating number of the current needs channel code of distributing to described other channel.
4. according to claim 2 or 3 described methods, it is characterized in that the correlated channels sign indicating number of described channel code is: this channel code itself, perhaps the father's sign indicating number or the subcode of this channel code.
5. according to claim 2 or 3 described methods, it is characterized in that described other channel is high-speed physical downlink shared channel (HS-PDSCH) HS-PDSCH.
6. method according to claim 1 is characterized in that,
Described step b further comprises: NodeB returns acknowledge message to RNC;
This method further comprises: RNC determines that the channel code that this Common transport channel took originally is in idle condition after receiving acknowledge message.
7. method according to claim 1 is characterized in that, described channel code information parameter comprises: the spreading factor of channel code and the sign indicating number number.
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| CNB2006100801645A CN100550692C (en) | 2006-05-10 | 2006-05-10 | A kind of method of reconfiguration of common transfer channel |
| PCT/CN2006/003608 WO2007128179A1 (en) | 2006-05-10 | 2006-12-26 | A method and system for the reconfiguration of the public transmission channel |
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| CNB2006100801645A CN100550692C (en) | 2006-05-10 | 2006-05-10 | A kind of method of reconfiguration of common transfer channel |
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| CN102036379A (en) * | 2009-09-25 | 2011-04-27 | 中兴通讯股份有限公司 | Method and device for distributing code word resource |
| EP3503469B1 (en) * | 2012-09-21 | 2021-03-03 | Huawei Technologies Co., Ltd. | Transmission method for common message and device |
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| EP1647115B1 (en) * | 2003-07-18 | 2011-11-02 | Electronics and Telecommunications Research Institute | Method and device for allocating radio resources in wireless portable network system |
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