CN1399432A - Emission controlling method for base station to select diversity-sending power - Google Patents
Emission controlling method for base station to select diversity-sending power Download PDFInfo
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- CN1399432A CN1399432A CN01126304A CN01126304A CN1399432A CN 1399432 A CN1399432 A CN 1399432A CN 01126304 A CN01126304 A CN 01126304A CN 01126304 A CN01126304 A CN 01126304A CN 1399432 A CN1399432 A CN 1399432A
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Abstract
In the present invention, the base station sends descending information to user's equipment via special physical channel, and during sending the information of special physical data channel and special physical control channel in main subzone is sent normally and the emitting power for data information of special physical data channel in non-main subzone is set zero and the emitting power for transmission format combination indication of special physical control channel is set zero, while the sending power control and pilot frequency information of special physical control channel in non-main subzone is sent normally. The method of the present invention can reduce the interference to other users while ensuring good power control performance of subzone and user's equipment.
Description
Technical field
The present invention relates to CDMA mobile communication systems, more specifically refer to a kind of power emission control method of base station to select diversity-sending
Background technology
In CDMA mobile communication systems, base station to select diversity-sending (SSDT) is a kind of macro diversity method under the soft handover, and in this method, subscriber equipment selects a sub-district to be set to the main plot from Active Set, and other sub-district is non-main plot in the Active Set.The base station only sends business datum to the main plot, and non-main plot is not sent business datum, reduce under the soft handoff mode owing to send the interference that brings other users to many sub-districts with this, guarantee also simultaneously that subscriber equipment can not have the quick choice of location of acquisition under the network participation, guarantee the advantage of soft handover.
Under base station to select diversity-sending (SSDT), the main plot sends Dedicated Physical Data Channel (DPDCH) and Dedicated Physical Control Channel (DPCCH) simultaneously, but not the main plot does not send Dedicated Physical Data Channel (DPDCH), only send Dedicated Physical Control Channel (DPCCH), the purpose that sends Dedicated Physical Control Channel (DPCCH) is in order to keep being connected of sub-district and subscriber equipment on the one hand, is in order to carry out power control on the other hand.By in non-main plot, not sending Dedicated Physical Data Channel (DPDCH), can avoid interference like this to other users in the sub-district.
Please consult shown in Figure 1ly earlier, this figure has illustrated the structure of time slot of descending transmission DPCH, and special-purpose physical data channel (DPDCH) and Dedicated Physical Control Channel (DPCCH) are time-multiplexed in the DPCH.Two downlink transmission power grade: P1 of a cell management and P2 in this communication system, wherein P1 is used to be provided with the transmitted power of downlink dedicated physical control channel (DPCCH), transformat combination indication (TFCI), transmission power control (TPC) and pilot tone (PILOT) in Dedicated Physical Control Channel (DPCCH), when reality sent, transmitted power was that P1 adds bias power P01, P02 and P03 respectively.P2 is used for downlink dedicated physical data channel (DPDCH), if the sub-district is chosen as the main plot, then P2 equals P1, otherwise P2 equals 0, and the sub-district is controlled at P1 and P2 in the power control dynamic range.Please in conjunction with Fig. 2, shown in Figure 3, they illustrated respectively present employing under base station to select diversity-sending (SSDT), main plot and non-main plot transmitted power, as can be seen from the figure, be in subscriber equipment under base station to select diversity-sending (SSDT) pattern for certain, when the base station by DPCH when it sends downlink service data information, the main plot sends Dedicated Physical Data Channel (DPDCH) and Dedicated Physical Control Channel (DPCCH), but not the main plot only sends Dedicated Physical Control Channel (DPCCH), wherein pilot tone (PILOT) and transmission power control (TPC) are for the control of the power between subscriber equipment and the sub-district, and business datum is followed in transformat combination indication (TFCI), be used to indicate the transformat of business datum, owing to indicate (TFCI) can indicate the transformat of Dedicated Physical Data Channel (DPDCH) service data information of base station transmission by Dedicated Physical Control Channel (DPCCH) transformat combination that the main plot sends, the not useful effect of transformat combination indication (TFCI) that therefore non-main plot sends, but this transformat combination indication (TFCI) that has bias power P02 transmitted power will produce interference to other subscriber equipmenies user in the sub-district, can not give full play to the advantage of the base station to select diversity-sending under the soft handover.
Summary of the invention
The objective of the invention is to control that the subscriber equipment user is subject to interference problem in the existing sub-district, propose a kind of power emission control method of base station to select diversity-sending at power under the present base station to select diversity-sending.
To achieve these goals, adopt following technical scheme: the power emission control method of base station to select diversity-sending of the present invention is: the base station sends downlink information by DPCH to subscriber equipment, when sending, the Dedicated Physical Data Channel of main plot and the information of Dedicated Physical Control Channel are sent as usual; Data message transmitting power to non-main plot Dedicated Physical Data Channel is zero, it is characterized in that: the transmitted power to the indication of the transformat combination in the Dedicated Physical Control Channel of non-main plot is zero.
When the transmitted power of the transformat combination indication in the Dedicated Physical Control Channel of non-main plot was zero, the transmission power control in the Dedicated Physical Control Channel of non-main plot and the information of pilot tone sent as usual.
When transmission power control that sends non-main plot Dedicated Physical Control Channel and pilot tone, the transmission power control of Dedicated Physical Control Channel and the transmitted power of pilot tone equated when the transmitted power of described transmission power control and pilot tone was chosen as the main plot with this sub-district.
Because adopted the power emission control method of above-mentioned base station to select diversity-sending, the present invention has the following advantages:
1) under soft handoff mode, the base station sends downlink service data by DPCH, it is zero that non-main plot transformat combination indication transmitted power is set, and can reduce the interference to other users, gives full play to the advantage that adopts base station to select diversity-sending under the soft handover.
2) because descending transmission transformat combination is indicated and linked to each other on transmitting time,, stop to send the transformat combination index signal and can not increase the complexity that any downlink radio frequency sends therefore for non-main plot.
3) keep pilot frequency information and the transmission power control information of sending in the Dedicated Physical Control Channel, and stop to send the transformat combination indication information, can guarantee to guarantee the power control performance that original technology is good between sub-district and subscriber equipment, can reduce certain interference again.
4) to the power emission of original base station to select diversity-sending without any harmful effect.
Description of drawings
Fig. 1 is the structure of time slot schematic diagram of base station to user's equipment downward emission DPCH.
Fig. 2 is that present base station is to user's equipment downward main plot DPCH transmitting power schematic diagram.
Fig. 3 is that present base station is to the non-main plot of user's equipment downward DPCH transmitting power schematic diagram.
Fig. 4 is for after adopting inventive method, and the base station is to the non-main plot of user's equipment downward DPCH transmitting power schematic diagram.
Embodiment
Usually, it is by limiting the service data information that some sub-district does not send Dedicated Physical Data Channel (DPDCH) that soft handover adopts down the main purpose of base station to select diversity-sending (SSDT), thereby reduces the interference to other users in the sub-district.For the Dedicated Physical Control Channel on the non-main plot (DPCCH), transformat combination indication (TFCI) information of its carrying is not brought into play useful effect, and its transmitted power brings interference can for equally other users simultaneously.Therefore, consider under base station to select diversity-sending (SSDT), close transformat combination indication (TFCI) transmitted power of non-main plot Dedicated Physical Control Channel (DPCCH) and can bring performance gain.In addition, because downlink dedicated physical data channel (DPDCH) and Dedicated Physical Control Channel (DPCCH) are time-multiplexed, transformat combination indication (TFCI) links to each other on transmitting time with DATA2, therefore for non-main plot, can not increase the complexity that any downlink radio frequency is sent when stopping to send transformat combination indication (TFCI) signal yet.
Just be based on above-mentioned consideration, please in conjunction with Fig. 2 and shown in Figure 4, the power emission control method imbody of base station to select diversity-sending of the present invention is as follows:
The base station sends downlink information by DPCH to subscriber equipment, when sending, the Dedicated Physical Data Channel (DPDCH) of main plot and the information of Dedicated Physical Control Channel (DPCCH) is sent as usual; Data message transmitting power to non-main plot Dedicated Physical Data Channel (DPDCH) is zero, and it is zero that the transformat combination in the non-main plot Dedicated Physical Control Channel (DPCCH) is indicated the transmitted power of (TFCI) signal.
When the transmitted power of transformat combination indication (TFCI) signal in non-main plot Dedicated Physical Control Channel (DPCCH) was zero, the transmission power control (TPC) in the non-main plot Dedicated Physical Control Channel (DPCCH) and the information of pilot tone (PILOT) sent as usual.
When transmission power control (TPC) that sends non-main plot Dedicated Physical Control Channel (DPCCH) and pilot tone (PILOT), transmitted power P1+P02, the P1+P03 of the transmission power control (TPC) of Dedicated Physical Control Channel (DPCCH) and pilot tone (PILOT) equated when transmitted power P1+P02, the P1+P03 of described transmission power control (TPC) and pilot tone (PILOT) was chosen as the main plot with this sub-district.
Claims (3)
1, a kind of power emission control method of base station to select diversity-sending, the base station sends downlink information by DPCH to subscriber equipment, when sending, the Dedicated Physical Data Channel of main plot and the information of Dedicated Physical Control Channel is sent as usual; Data message transmitted power to non-main plot Dedicated Physical Data Channel is zero, it is characterized in that: the transmitted power to the indication of the transformat combination in the Dedicated Physical Control Channel of non-main plot is zero.
2, the power emission control method of base station to select diversity-sending as claimed in claim 1, it is characterized in that: when the transmitted power of the transformat combination indication in the Dedicated Physical Control Channel of non-main plot was zero, the transmission power control in the Dedicated Physical Control Channel of non-main plot and the information of pilot tone sent as usual.
3, the power emission control method of base station to select diversity-sending as claimed in claim 2, it is characterized in that: when transmission power control information that sends non-main plot Dedicated Physical Control Channel and pilot frequency information, the transmission power control of Dedicated Physical Control Channel and the transmitted power of pilot tone equated when the transmitted power of described transmission power control information and pilot frequency information was chosen as the main plot with this sub-district.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011263040A CN1154278C (en) | 2001-07-20 | 2001-07-20 | Emission controlling method for base station to select diversity-sending power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011263040A CN1154278C (en) | 2001-07-20 | 2001-07-20 | Emission controlling method for base station to select diversity-sending power |
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| Publication Number | Publication Date |
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| CN1399432A true CN1399432A (en) | 2003-02-26 |
| CN1154278C CN1154278C (en) | 2004-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011263040A Expired - Fee Related CN1154278C (en) | 2001-07-20 | 2001-07-20 | Emission controlling method for base station to select diversity-sending power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370707C (en) * | 2004-11-05 | 2008-02-20 | 华为技术有限公司 | Method and apparatus for controlling enhanced uplink special physical channel power |
| CN100428830C (en) * | 2006-08-08 | 2008-10-22 | 华为技术有限公司 | Method for inhibiting interference of neighborhood in mobile communication system and base station node |
| CN101374325B (en) * | 2007-08-23 | 2012-04-04 | 电信科学技术研究院 | Method and system for implementing district switch by mobile terminal |
| US8861387B2 (en) | 2008-09-22 | 2014-10-14 | Huawei Technologies Co., Ltd. | Method, device and user equipment for transmitting multi-cell scheduling information |
-
2001
- 2001-07-20 CN CNB011263040A patent/CN1154278C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100370707C (en) * | 2004-11-05 | 2008-02-20 | 华为技术有限公司 | Method and apparatus for controlling enhanced uplink special physical channel power |
| CN100428830C (en) * | 2006-08-08 | 2008-10-22 | 华为技术有限公司 | Method for inhibiting interference of neighborhood in mobile communication system and base station node |
| CN101374325B (en) * | 2007-08-23 | 2012-04-04 | 电信科学技术研究院 | Method and system for implementing district switch by mobile terminal |
| US8861387B2 (en) | 2008-09-22 | 2014-10-14 | Huawei Technologies Co., Ltd. | Method, device and user equipment for transmitting multi-cell scheduling information |
| US9571245B2 (en) | 2008-09-22 | 2017-02-14 | Huawei Technologies Co., Ltd. | Method, device and user equipment for transmitting multi-cell scheduling information |
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| Publication number | Publication date |
|---|---|
| CN1154278C (en) | 2004-06-16 |
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