CN1770655A - Method and apparatus for controlling enhanced uplink special physical channel power - Google Patents

Abstract

The invention discloses an enhanced uplink dedicated physical channel power control method, comprising the steps of: the network side issues the gain factor of the enhanced uplink dedicated physical data channel and the enhanced uplink dedicated physical control channel to user equipment through signaling Corresponding to the power additional offset of the enhanced uplink physical data channel; the user equipment determines the corresponding enhanced uplink dedicated physical control channel gain factor according to the gain factor of the enhanced uplink dedicated physical data channel and the power additional offset The user equipment performs corresponding power control according to the gain factor of the enhanced uplink dedicated physical data channel and the determined gain factor of the enhanced uplink dedicated physical control channel. The invention also discloses a corresponding enhanced uplink dedicated physical channel power control device. The present invention can reduce high-layer signaling overhead, and perform power control according to the quality requirements of different services, thereby meeting the requirements of different service qualities.

Description

Enhanced uplink dedicated physical channel power control method and device

technical field

The present invention relates to the power control technology in the wideband code division multiple access (WCDMA) mobile communication system, more specifically, the present invention relates to a kind of enhanced uplink dedicated physics Channel power control method and device.

Background technique

WCDMA is a standard technology of the third generation of mobile communication. Usually, the physical channels of WCDMA are divided into uplink and downlink. There are two dedicated physical channels and one public physical channel in the uplink, where the two dedicated physical channels are Dedicated Physical Data Channel (DPDCH: Dedicated Physical Data Channel) and Dedicated Physical Control Channel (DPCCH: Dedicated Physical Control Channel), public physical channel The channel is a Physical Random Access Channel (PRACH: Physical Random Access Channel). User data is transmitted on dedicated physical data channels; and control information on the physical layer is transmitted on dedicated physical control channels.

With the development of technology, in the WCDMA enhanced uplink high-speed packet access technology, an enhanced uplink dedicated channel is added, which is a transmission channel composed of enhanced uplink dedicated physical data channel (E-DPDCH: Enhanced Dedicated Physical Data Channel) bearer, and an enhanced uplink dedicated physical control channel (E-DPCCH: Enhanced Dedicated Physical Control Channel) sent at the same time is added as the physical layer control signaling bearer of the enhanced uplink dedicated physical data channel.

At present, when performing power control on the above-mentioned enhanced uplink physical channels (including E-DPDCH and E-DPCCH), it is generally performed according to the gain factor (also called power offset) configured for the channel by the network. The configuration of the gain factor is generally performed according to the service quality (QoS: Quality of Service) of the service. Since different QoS services may have different service types and delay requirements even if the uplink data transmission rate is exactly the same, therefore, the gain factors for different services may also be different. Therefore, the network often needs to be configured according to different services and current network conditions, such as the physical channel propagation environment, or the current load of the network. Usually, this gain factor parameter (power offset parameter) is generally configured to be consistent with the existing DPCCH The relative value of the power configuration.

Generally, when the existing power control technology configures the gain factor for the user equipment, the network notifies the user equipment of the gain factors of E-DPDCH and E-DPCCH through signaling (such as radio bearer control signaling). Different, the required QoS may also be different. Therefore, when performing power control, the uplink physical channels (including E-DPDCH and E-DPCCH) will be required to be configured with different gain factors, and the user equipment will be notified of the two enhanced The gain factor of the uplink dedicated physical channel occupies precious high-level signaling bandwidth, which undoubtedly increases the high-level signaling load of the network.

In addition, since the gain factors of E-DPDCH and E-DPCCH are associated with the transmission format of the transmission channel, different transmission formats will require different gain factors. make the load heavier.

Contents of the invention

The technical problem solved by the present invention is to provide an enhanced uplink dedicated physical channel power control method and device to reduce network signaling overhead and adapt to QoS of different services.

In order to solve the above problems, the enhanced uplink physical channel power control method of the present invention, the enhanced uplink dedicated physical channel includes an enhanced uplink dedicated physical data channel and an enhanced uplink dedicated physical control channel, comprising the steps of:

a. The network side issues the gain factor of the enhanced uplink dedicated physical data channel requiring power control and the power additional offset of the enhanced uplink dedicated physical control channel corresponding to the enhanced uplink physical data channel to the user equipment through signaling;

b. The user equipment determines a corresponding gain factor of the enhanced uplink dedicated physical control channel according to the gain factor of the enhanced uplink dedicated physical data channel and the power additional offset;

c. The user equipment performs corresponding power control according to the gain factor of the enhanced uplink dedicated physical data channel and the determined gain factor of the enhanced uplink dedicated physical control channel.

Wherein, in step b, the user equipment determines the gain factor of the enhanced uplink dedicated physical control channel according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}}<span\; class="notranslate">\; \&CenterDot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}}<span\; class="notranslate">\; \&CenterDot;</span>\mathrm{<span\; class="notranslate">\; \&gamma;</span>}$

or ${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&Center\; Dot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&Center\; Dot;\mathrm{\&gamma;}$

in

β _{ed, i, j} : gain factor of the enhanced uplink dedicated physical data channel;

r _ed : coding rate of the enhanced uplink dedicated physical data channel;

r _ec : coding rate of the enhanced uplink dedicated physical control channel;

SF _ed : the spreading factor of the enhanced uplink dedicated physical data channel;

SF _ec : the spreading factor of the enhanced uplink dedicated physical control channel;

γ: Power additional offset of the enhanced uplink dedicated physical data channel corresponding to the enhanced uplink dedicated physical data channel.

Wherein, the gain factor of the enhanced uplink dedicated physical data channel issued by the network side is the enhanced uplink dedicated physical data channel gain factor of the reference transmission format, and in step a, the network side also sends the enhanced uplink dedicated physical data channel to the user equipment through signaling The different traffic channels carried on the dedicated physical data channel correspond to the offset factors of the reference transmission format;

Step b includes:

b1. The user equipment determines the corresponding enhanced uplink dedicated physical data channel required by different traffic channels carried on the enhanced uplink dedicated physical data channel according to the enhanced uplink dedicated physical data channel gain factor and the offset factor of the reference transmission format gain factor;

b2. The user equipment determines the gain factor required by the corresponding enhanced uplink dedicated physical control channel according to the determined corresponding gain factors required by different traffic channels carried by the enhanced uplink dedicated physical data channel and the additional offset;

In step c, the user equipment performs corresponding power control according to the determined corresponding gain factors required by different traffic channels carried on the enhanced uplink dedicated physical data channel and corresponding enhanced uplink dedicated physical control channel gain factors.

Wherein, in step b1, the user equipment determines the corresponding enhanced uplink dedicated physical data channel gain factor required by different traffic channels carried on the enhanced uplink dedicated physical data channel according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&delta;</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}}<span\; class="notranslate">\; \&CenterDot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}}$

in:

β _{ed, ref} : the enhanced uplink dedicated physical data channel gain factor of the reference transport format;

β _{ed, i, j} : the enhanced uplink dedicated physical data channel gain factor of the j-th transmission format of the i-th traffic channel;

L _{ed, ref} : the number of code-division channels of the enhanced uplink dedicated physical data channel with reference to the transmission format;

L _{ed, j} : the number of code division channels of the enhanced uplink dedicated physical data channel of the jth transmission format;

δ _i : the offset factor corresponding to the reference transmission format of the i-th traffic channel;

K _{ed, ref} : the number of data bits carried by the reference transport format enhanced uplink dedicated physical data channel;

K _{ed, j} : the number of data bits carried by the enhanced uplink dedicated physical data channel of the jth transmission format.

Wherein, the signaling is radio bearer control signaling.

Wherein, the radio bearer control signaling includes radio bearer establishment signaling, radio bearer reconfiguration signaling, transport channel reconfiguration signaling, and physical channel reconfiguration signaling.

Correspondingly, the enhanced uplink physical channel power control device of the present invention includes:

The sending device on the network side is configured to send the gain factor of the enhanced uplink dedicated physical data channel requiring power control and the power additional bias of the enhanced uplink dedicated physical control channel corresponding to the enhanced uplink physical data channel through signaling on the network side set;

The user equipment is configured to determine the corresponding gain factor of the enhanced uplink dedicated physical control channel according to the gain factor of the enhanced uplink dedicated physical data channel and the power additional offset, and according to the enhanced uplink dedicated physical control channel and the determined gain factor of the enhanced uplink dedicated physical control channel to perform corresponding power control.

Wherein, the user equipment determines the gain factor of the enhanced uplink dedicated physical control channel according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\mathrm{<span\; class="notranslate">\; \&gamma;</span>}$

or ${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&Center\; Dot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&Center\; Dot;\mathrm{\&gamma;}$

in

β _{ed, i, j} : gain factor of the enhanced uplink dedicated physical data channel;

r _ed : coding rate of the enhanced uplink dedicated physical data channel;

r _ec , the coding rate of the enhanced uplink dedicated physical control channel;

SF _ed : the spreading factor of the enhanced uplink dedicated physical data channel;

SF _ee : the spreading factor of the enhanced uplink dedicated physical control channel;

γ: Power additional offset of the enhanced uplink dedicated physical data channel corresponding to the enhanced uplink dedicated physical data channel.

Wherein, the gain factor of the enhanced uplink dedicated physical data channel issued by the network side sending device is the enhanced uplink dedicated physical data channel gain factor of the reference transmission format, and the network side sending device also sends the enhanced uplink dedicated physical data channel gain factor to the user equipment. Different traffic channels carried on the uplink dedicated physical data channel correspond to offset factors of the reference transmission format;

The user equipment includes:

The first calculation means is used to determine the corresponding enhanced uplink dedicated physical data channel requirements of different traffic channels carried on the enhanced uplink dedicated physical data channel according to the enhanced uplink dedicated physical data channel gain factor and the offset factor of the reference transmission format. Physical data channel gain factor;

The second calculation means is used to determine the corresponding gain factor required by the enhanced uplink dedicated physical control channel according to the determined corresponding gain factors required by different traffic channels carried by the enhanced uplink dedicated physical data channel and the additional offset;

The control device is configured to perform corresponding power control according to the determined corresponding gain factors required by different traffic channels carried on the enhanced uplink dedicated physical data channel and corresponding enhanced uplink dedicated physical control channel gain factors.

Wherein, the first calculation device determines the corresponding enhanced uplink dedicated physical data channel gain factor required by different traffic channels carried on the enhanced uplink dedicated physical data channel according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&delta;</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}}$

in:

β _{ed, ref} : the enhanced uplink dedicated physical data channel gain factor of the reference transport format;

β _{ed, i, j} : the enhanced uplink dedicated physical data channel gain factor of the j-th transmission format of the i-th traffic channel;

L _{ed, ref} : the number of code-division channels of the enhanced uplink dedicated physical data channel with reference to the transmission format;

L _{ed, j} : the number of code division channels of the enhanced uplink dedicated physical data channel of the jth transmission format;

δ _i : the offset factor corresponding to the reference transmission format of the i-th traffic channel;

K _{ed, ref} : the number of data bits carried by the reference transport format enhanced uplink dedicated physical data channel;

K _{ed, j} : the number of data bits carried by the enhanced uplink dedicated physical data channel of the jth transmission format.

Wherein, the signaling is radio bearer control signaling.

Wherein, the radio bearer control signaling includes radio bearer establishment signaling, radio bearer reconfiguration signaling, transport channel reconfiguration signaling, and physical channel reconfiguration signaling.

Compared with the prior art, the present invention has the following beneficial effects:

First of all, the present invention sends the gain factor of E-DPDCH and the additional power offset of E-DPCCH relative to the E-DPDCH to the user equipment through signaling, and then the user equipment uses the gain factor of the E-DPDCH and the The above power additional offset further determines the corresponding gain factor of the E-DPCCH. Since the network side only sends the gain factor of the E-DPDCH through signaling, the gain factor of the E-DPCCH is determined by the user equipment according to relevant information, thereby reducing signaling The overhead used to transmit the E-DPCCH channel gain factor.

Secondly, in the present invention, the E-DPDCH gain factor of a reference transmission format, the offset factor of the different traffic channels carried on the E-DPDCH corresponding to the reference transmission format, and the E - The DPCCH corresponds to the power additional offset of the E-DPDCH, and the user equipment calculates and determines the corresponding E required by different traffic channels carried on the E-DPDCH according to the E-DPDCH gain factor of the reference transmission format and the offset factor -DPDCH gain factor, and the corresponding E-DPCCH gain factor is further determined by the corresponding E-DPDCH gain factor required by the additional offset and the determined E-DPDCH carried by different traffic channels, because the offset factor It is related to the transmission format and service QoS, so the E-DPDCH and E-DPCCH determined by the present invention can meet the requirements of various service QoS, and also reduce the overhead of high-layer signaling.

Description of drawings

Fig. 1 is a schematic diagram of the wireless interface protocol layer of the enhanced uplink dedicated physical channel application of the present invention;

FIG. 2 is a schematic diagram of various channel mappings in the prior art;

3 is a flowchart of an embodiment of the enhanced uplink dedicated physical channel power control method of the present invention;

FIG. 4 is a signaling transmission process applied in the radio bearer establishment control process of the present invention;

5 is a schematic diagram of the composition of the enhanced uplink dedicated physical channel power control device of the present invention;

FIG. 6 is a schematic diagram of the composition of the user equipment shown in FIG. 5 according to the present invention.

Detailed ways

Referring to FIG. 1 , this figure is a schematic diagram of the wireless interface protocol layer of the application of the enhanced uplink dedicated physical channel of the present invention.

According to the protocol specification of 3GPP, the wireless interface protocol layer of WCDMA is divided into three layers. As shown in Figure 1, the bottom layer is the physical layer, and the protocol layers above the physical layer (L1) are called the data link layer (L2) and the network layer (L3). In the UTRA FDD radio interface, the data link layer is divided into several sublayers. On the control plane, the data link layer (L2) consists of two sub-layers - medium access control (MAC) protocol and radio link control (RLC) protocol; on the user plane, in addition to MAC and RLC, there are two A protocol related to specific services: Packet Data Convergence Protocol (PDCP) and Broadcast/Multicast Control Protocol (BMC), the enhanced uplink dedicated physical channel of the present invention belongs to the physical layer channel.

Please also refer to FIG. 1 , on the interface between layers, a circle represents an end-to-end communication service access point (SAP). The SAP between the MAC and the physical layer (PHY) provides the transport channel. The SAP between RLC and MAC provides a logical channel. Logical channels are divided into two categories: control channels and traffic channels. The control channel is used to transmit control plane information, and the traffic channel is used to transmit user plane information. Usually, one traffic channel corresponds to one service.

Referring to Figure 2, this figure is a schematic diagram of the mapping of the above-mentioned various channels. As shown in the figure, logical channels for transmitting various service information or control information are first mapped to transport channels, and then the transport channels are mapped to corresponding physical channels for transmission.

Since the existing technology performs power control on the enhanced uplink dedicated physical channel, the gain factors of E-DPDCH and E-DPCCH are sent to the user equipment through signaling, resulting in a waste of high-level signaling. In fact, the E-DPDCH The gain factors of E-DPCCH and E-DPCCH are related to the QoS of the service. It is not necessary for high-level signaling to notify the user equipment of the gain factors of the two channels at the same time, that is, only the gain factor of one channel needs to be notified, and the gain factor of the other channel can be It is obtained by the user equipment through differences in spreading factors between channels, and/or differences in coding rates, and/or corresponding power addition offsets from high-level configurations.

With reference to Fig. 3, this figure is the flow chart of the preferred embodiment of the enhanced uplink dedicated physical channel power control method of the present invention, mainly comprises the following steps:

Step 10, the network side sends a reference transmission format E-DPDCH reference gain factor β _{ed, ref} to the user equipment through signaling, and different traffic channels carried on the E-DPDCH correspond to the offset factor δ of the reference transmission format _i (i represents different services mapped to the same transport channel) and the power additional offset γ of E-DPDCH corresponding to E-DPCCH (the meaning of γ is to distinguish the receiving performance of E-DPCCH and E-DPDCH, that is, different receive block error rate);

In general, δ _i =1, in order to save signaling, the network may not transmit this value. Some services may configure δ _i =2, 4, 8... to increase the transmission power because they require relatively low transmission delay or high average service throughput. In this way, in addition to the size of the data packet, the transmission format also includes the offset factor of the transmission format corresponding to the reference transmission format. Notify the physical layer, if the MAC layer multiplexes multiple service packets into the same transport channel packet during multiplexing, the MAC can use the higher bias factor as the current bias factor to notify the physical layer .

Step 11, the user equipment determines the corresponding E-DPDCH gain factor required by different traffic channels carried on the E-DPDCH according to the E-DPDCH gain factor of the reference transmission format and the offset factor. The user equipment can determine the corresponding gain factors required by other traffic channels carried on the E-DPDCH through calculation, that is, the gain factors required by other traffic channels do not need to be transmitted through network high-level signaling;

For example, the user equipment can calculate the E-DPDCH gain factor corresponding to each different service i and different transmission format j according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; i</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&delta;</span>}}_{\mathrm{<span\; class="notranslate">\; i</span>}}<span\; class="notranslate">\; \&CenterDot;</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}{{\mathrm{<span\; class="notranslate">\; L</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; j</span>}}}{{\mathrm{<span\; class="notranslate">\; K</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}<span\; class="notranslate">\; ,</span>\mathrm{<span\; class="notranslate">\; ref</span>}}}}$

in:

-β _ed,ref : E-DPDCH gain factor for the reference transport format.

-β _ed,i,j : E-DPDCH gain factor of the j-th transport format of the i-th traffic channel.

-L _{ed, ref} : the number of E-DPDCH code-divided channels of the reference transport format.

-L _{ed, j} : the number of E-DPDCH code division channels of the jth transmission format.

-δ _i : Offset factor of the corresponding reference transmission format of the i-th traffic channel

-K _ed,ref : the number of data bits carried by the reference transport format E-DPDCH.

-K _{ed, j} : the number of data bits carried by the jth transmission format E-DPDCH.

It should be noted that those skilled in the art can also use other formulas to perform calculations according to actual conditions, which will not be repeated here.

Step 12, the user equipment determines the corresponding gain factor required by the E-DPCCH according to the determined corresponding gain factor required by the different traffic channels carried by the E-DPDCH and the additional offset;

Usually, when the service with higher QoS requirements is transmitted, the power gain factor of E-DPDCH is relatively high. At this time, the power gain factor of E-DPCCH is also required to cooperate with E-DPDCH, otherwise the transmission efficiency of the service will be affected. Therefore, the current gain factor of the E-DPDCH should be considered when determining the gain factor of the E-DPCCH.

Assuming that the coding rate of E-DPDCH is r _ed , the coding rate of E-DPCCH is _rec , and the spreading factor of E-DPDCH is SF _ed , if E-DPDCH is composed of multiple barcode sub-channels, take the largest spreading factor among them factor, β _ed is also taken as the gain factor of the code division channel corresponding to the spreading factor. The spreading factor of E-DPCCH is SF _ec , then the gain factor of E-DPCCH can be calculated according to the following formula:

${\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}<span\; class="notranslate">\; =</span>{\mathrm{<span\; class="notranslate">\; \&beta;</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}{{\mathrm{<span\; class="notranslate">\; SF</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\sqrt{\frac{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ec</span>}}}{{\mathrm{<span\; class="notranslate">\; r</span>}}_{\mathrm{<span\; class="notranslate">\; ed</span>}}}}<span\; class="notranslate">\; \&Center\; Dot;</span>\mathrm{<span\; class="notranslate">\; \&gamma;</span>}$

or ${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&Center\; Dot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&Center\; Dot;\mathrm{\&gamma;}$

in

β _ed,i,j : gain factor of E-DPDCH;

r _ed : coding rate of E-DPDCH;

r _ec : coding rate of E-DPCCH;

SF _ed : Spreading factor of E-DPDCH;

SF _ec : spreading factor of E-DPCCH;

γ: Power additional offset of E-DPDCH corresponding to E-DPCCH.

For example, if SF _ed =16, SF _ec =256, β _ed =1, γ=1, red _ed =0.4, r _ec =1/3, then calculated according to the formula

β _ec =0.5*0.9128=0.4564.

The above-mentioned high-level bias for γ can be configured for different channel environments, or it can not be configured, then γ=1. In addition, in this step, β _ec is determined by corresponding β _ed calculation. For the β _ed determined in step 11 according to different services , this step can also determine the β _ec of the corresponding various traffic channels according to the above-mentioned method. Through such a method, the power offset of the high-speed uplink packet access channel (including E-DPCCH and E-DPDCH) and the type of traffic Linked with QoS requirements such as time delay, precise control of wireless service QoS is realized. At the same time, the signaling overhead for transmitting the E-DPCH channel power offset is reduced.

Finally, in step 13, the user equipment performs corresponding power control according to the determined corresponding gain factors required by different traffic channels carried on the E-DPDCH and corresponding E-DPCCH gain factors.

The present invention can be applied in various radio bearer control processes, and a specific application will be described below. Refer to FIG. 4 , which shows the signaling transmission process in the radio bearer establishment control process. Specifically, the network side can The bearer establishment signaling sends the reference gain factor β _{ed, ref} , the offset factor δ _i and the power additional offset γ of the E-DPDCH corresponding to the E-DPCCH to the user equipment, and the user equipment receives the reference gain Factor β _{ed, ref} , offset factor δ _i and the power additional offset γ of E-DPDCH corresponding to E-DPCCH can determine the gain factors of E-DPDCH and E-DPCCH corresponding to various traffic channels, and then according to the The corresponding power control is performed based on the gain factors of the E-DPDCH and E-DPCCH.

It should be noted that the reference gain factor β _{ed, ref} , the offset factor δ _i and the power additional offset γ of the E-DPDCH corresponding to the E-DPCCH can also be applied in the radio bearer reconfiguration process through the radio bearer The reconfiguration signaling is sent, or the application is sent through the transmission channel reconfiguration signaling during the transmission channel reconfiguration process, and the application is sent through the physical channel reconfiguration signaling during the physical channel reconfiguration process, which will not be described in detail here.

The following describes the device for power control of the enhanced uplink dedicated physical channel in another aspect of the present invention. With reference to FIG. The side sending device 20 is used to send the gain factor of the E-DPDCH requiring power control and the power additional offset of the E-DPCCH corresponding to the E-DPDCH through signaling on the network side. Specifically, the network side device can pass The implementation of the wireless network controller only needs to enhance the corresponding functions of the wireless network controller, which will not be described in detail here.

On the user side, the present invention is correspondingly equipped with a user equipment 21, and the user equipment 21 is configured to determine the corresponding E-DPCCH gain factor according to the E-DPDCH gain factor and the power additional offset, and according to the E-DPDCH gain factor - The gain factor of the DPDCH and the determined gain factor of the E-DPCCH perform corresponding power control. Similarly, the user equipment in the present invention can also be implemented by enhancing the corresponding functions of the user equipment.

In actual implementation, the gain factor of the E-DPDCH issued by the sending device 20 on the network side can be an enhanced uplink dedicated physical data channel gain factor with reference to the transmission format, correspondingly, it can adapt to the QoS requirements of different traffic channels The sending device 20 on the network side may also deliver to the user equipment the offset factors corresponding to the reference transmission format of the different traffic channels carried on the E-DPDCH, so that the user equipment can determine the requirements of the different traffic channels carried on the E-DPDCH. Corresponding gain factor, and then corresponding power control.

Referring to FIG. 6 , this figure is a schematic diagram of the composition of the user equipment 21 of the present invention. In the figure, only some modules related to the present invention are shown, and the parts not related to the essence of the present invention are not shown, as shown in FIG. 6 , The user equipment 21 further includes:

The user equipment includes:

The first calculation means 211 is configured to determine the corresponding E-DPDCH gain factors required by different traffic channels carried on the E-DPDCH according to the E-DPDCH gain factors of the reference transmission format and the offset factor, and correspondingly, the The first calculating means 211 can use the aforementioned corresponding calculation formulas to determine gain factors required by different services carried on the E-DPDCH, which will not be described in detail here.

The second calculation means 212 is used to determine the corresponding gain factor required by the E-DPCCH according to the determined corresponding gain factor required by the different traffic channels carried by the E-DPDCH and the additional offset. Similarly, the second The computing device 212 may also use the aforementioned corresponding computing formula to determine the E-DPCCH gain factor, which will not be described in detail here.

The control means 213 is configured to perform corresponding power control according to the determined corresponding gain factors required by different traffic channels carried on the enhanced uplink dedicated physical data channel and corresponding enhanced uplink dedicated physical control channel gain factors.

The above descriptions are only preferred embodiments of the present invention, and do not constitute a limitation to the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (12)

1, a kind of enhanced uplink special physical channel Poewr control method, described enhanced uplink special physical channel comprises enhanced uplink Dedicated Physical Data Channel and enhanced uplink Dedicated Physical Control Channel, it is characterized in that, comprises step:

A, network side issue the gain factor of the enhanced uplink Dedicated Physical Data Channel that needs power control and the power added biasing of the corresponding described enhanced uplink physical data channel of enhanced uplink Dedicated Physical Control Channel by signaling to subscriber equipment;

The gain factor that b, subscriber equipment are determined corresponding enhanced uplink Dedicated Physical Control Channel according to the gain factor and the described power added biasing of described enhanced uplink Dedicated Physical Data Channel;

C, subscriber equipment carry out corresponding power control according to the gain factor of the gain factor of described enhanced uplink Dedicated Physical Data Channel and described definite enhanced uplink Dedicated Physical Control Channel.

2, enhanced uplink special physical channel Poewr control method according to claim 1 is characterized in that, step b subscriber equipment is determined the gain factor of enhanced uplink Dedicated Physical Control Channel according to following formula:

${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&CenterDot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&CenterDot;\sqrt{\frac{r_{\mathrm{ec}}}{r_{\mathrm{ed}}}}\&CenterDot;\mathrm{\&gamma;}$

Or ${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&CenterDot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&CenterDot;\mathrm{\&gamma;}$

Wherein

β _{Ed, i, j}: the gain factor of enhanced uplink Dedicated Physical Data Channel;

r _Ed: the encoding rate of enhanced uplink Dedicated Physical Data Channel;

r _Ec: the encoding rate of enhanced uplink Dedicated Physical Control Channel;

SF _Ed: the spreading factor of enhanced uplink Dedicated Physical Data Channel;

SF _Ec: the spreading factor of enhanced uplink Dedicated Physical Control Channel;

γ: the power added biasing of the corresponding enhanced uplink Dedicated Physical Data Channel of enhanced uplink Dedicated Physical Control Channel.

3, enhanced uplink special physical channel Poewr control method according to claim 1 and 2, it is characterized in that, the gain factor of the enhanced uplink Dedicated Physical Data Channel that described network side issues is the enhanced uplink gain factor of special physical data channel of reference transmission form, and step a network side also issues the bias factor of the corresponding described reference transmission form of different business channel that carries on the enhanced uplink Dedicated Physical Data Channel to subscriber equipment by signaling;

Step b comprises:

The corresponding enhanced uplink gain factor of special physical data channel that the different business channel that b1, subscriber equipment determine to carry on the enhanced uplink Dedicated Physical Data Channel according to the enhanced uplink gain factor of special physical data channel of described reference transmission form, described bias factor requires;

The gain factor that corresponding enhanced uplink Dedicated Physical Control Channel requires is determined in corresponding gain factor and described additional biasing that the different business channel that b2, subscriber equipment carry according to described definite enhanced uplink Dedicated Physical Data Channel requires;

Step c subscriber equipment carries out corresponding power control according to corresponding gain factor and the corresponding enhanced uplink Dedicated Physical Control Channel gain factor that the different business channel that carries on the described definite enhanced uplink Dedicated Physical Data Channel requires.

4, enhanced uplink special physical channel Poewr control method according to claim 3, it is characterized in that the corresponding enhanced uplink gain factor of special physical data channel that the different business channel that step b1 subscriber equipment is determined to carry on the enhanced uplink Dedicated Physical Data Channel according to following formula requires:

${\mathrm{\&beta;}}_{\mathrm{ed},i,j}={\mathrm{\&delta;}}_i\&CenterDot;{\mathrm{\&beta;}}_{\mathrm{ed},\mathrm{ref}}\&CenterDot;\sqrt{\frac{L_{\mathrm{ed},\mathrm{ref}}}{L_{\mathrm{ed},j}}}\&CenterDot;\sqrt{\frac{K_{\mathrm{ed},j}}{K_{\mathrm{ed},\mathrm{ref}}}}$

Wherein:

β _{Ed, ref}: the enhanced uplink gain factor of special physical data channel of reference transmission form;

β _{Ed, i, j}: the enhanced uplink gain factor of special physical data channel of the j kind transformat of i kind Traffic Channel;

L _{Ed, ref}: the enhanced uplink Dedicated Physical Data Channel Code Channel number of reference transmission form;

L _{Ed, j}: the enhanced uplink Dedicated Physical Data Channel Code Channel number of j kind transformat;

δ _i: the bias factor of the corresponding described reference transmission form of i kind Traffic Channel;

K _{Ed, ref}: reference transmission form enhanced uplink Dedicated Physical Data Channel data carried by data bit number;

K _{Ed, j}: j kind transformat enhanced uplink Dedicated Physical Data Channel data carried by data bit number.

5, enhanced uplink special physical channel Poewr control method according to claim 1 is characterized in that, described signaling is a radio bearer control signaling.

6, enhanced uplink special physical channel Poewr control method according to claim 5, it is characterized in that described radio bearer control signaling comprises that radio bearer sets up that signaling, radio bearer are reshuffled signaling, transmission channel reshuffles signaling and physical channel is reshuffled signaling.

7, a kind of enhanced uplink special physical channel output control device is characterized in that, comprising:

The network side transmitting apparatus is used at network side by the gain factor of the enhanced uplink Dedicated Physical Data Channel of transmitting signaling downwards need power control and the power added biasing of the corresponding described enhanced uplink physical data channel of enhanced uplink Dedicated Physical Control Channel;

Subscriber equipment, be used for the gain factor of determining corresponding enhanced uplink Dedicated Physical Control Channel according to the gain factor and the described power added biasing of described enhanced uplink Dedicated Physical Data Channel, and carry out corresponding power control according to the gain factor of the gain factor of described enhanced uplink Dedicated Physical Control Channel and described definite enhanced uplink Dedicated Physical Control Channel.

8, enhanced uplink special physical channel output control device according to claim 7 is characterized in that, described subscriber equipment is determined the gain factor of enhanced uplink Dedicated Physical Control Channel according to following formula:

${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&CenterDot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&CenterDot;\sqrt{\frac{r_{\mathrm{ec}}}{r_{\mathrm{ed}}}}\&CenterDot;\mathrm{\&gamma;}$

Or ${\mathrm{\&beta;}}_{\mathrm{ec}}={\mathrm{\&beta;}}_{\mathrm{ed}}\&CenterDot;\sqrt{\frac{{\mathrm{SF}}_{\mathrm{ed}}}{{\mathrm{SF}}_{\mathrm{ec}}}}\&CenterDot;\mathrm{\&gamma;}$

Wherein

β _{Ed, i, j}: the gain factor of enhanced uplink Dedicated Physical Data Channel;

r _Ed: the encoding rate of enhanced uplink Dedicated Physical Data Channel;

r _Ec: the encoding rate of enhanced uplink Dedicated Physical Control Channel;

SF _Ed: the spreading factor of enhanced uplink Dedicated Physical Data Channel;

SF _Ec: the spreading factor of enhanced uplink Dedicated Physical Control Channel;

γ: the power added biasing of the corresponding enhanced uplink Dedicated Physical Data Channel of enhanced uplink Dedicated Physical Control Channel.

9, according to claim 7 or 8 described enhanced uplink special physical channel output control devices, it is characterized in that, the gain factor of the enhanced uplink Dedicated Physical Data Channel that described network side transmitting apparatus issues is the enhanced uplink gain factor of special physical data channel of reference transmission form, and described network side transmitting apparatus also issues the bias factor of the corresponding described reference transmission form of different business channel that carries on the enhanced uplink Dedicated Physical Data Channel to subscriber equipment;

Described subscriber equipment comprises:

First calculation element is used for the corresponding enhanced uplink gain factor of special physical data channel that different business channel that the enhanced uplink gain factor of special physical data channel according to described reference transmission form, described bias factor determine to carry on the enhanced uplink Dedicated Physical Data Channel requires;

Second calculation element is used for determining the gain factor that corresponding enhanced uplink Dedicated Physical Control Channel requires according to corresponding gain factor and described additional biasing that the different business channel that described definite enhanced uplink Dedicated Physical Data Channel carries requires;

Control device, the corresponding gain factor and the corresponding enhanced uplink Dedicated Physical Control Channel gain factor that are used for requiring according to the different business channel that carries on the described definite enhanced uplink Dedicated Physical Data Channel carry out corresponding power control.

10, enhanced uplink special physical channel output control device according to claim 9, it is characterized in that the corresponding enhanced uplink gain factor of special physical data channel that the different business channel that described first calculation element is determined to carry on the enhanced uplink Dedicated Physical Data Channel according to following formula requires:

${\mathrm{\&beta;}}_{\mathrm{ed},i,j}={\mathrm{\&delta;}}_i\&CenterDot;{\mathrm{\&beta;}}_{\mathrm{ed},\mathrm{ref}}\&CenterDot;\sqrt{\frac{L_{\mathrm{ed},\mathrm{ref}}}{L_{\mathrm{ed},j}}}\&CenterDot;\sqrt{\frac{K_{\mathrm{ed},j}}{K_{\mathrm{ed},\mathrm{ref}}}}$

Wherein:

β _{Ed, ref}: the enhanced uplink gain factor of special physical data channel of reference transmission form;

β _{Ed, i, j}: the enhanced uplink gain factor of special physical data channel of the j kind transformat of i kind Traffic Channel;

L _{Ed, ref}: the enhanced uplink Dedicated Physical Data Channel Code Channel number of reference transmission form;

L _{Ed, j}: the enhanced uplink Dedicated Physical Data Channel Code Channel number of j kind transformat;

δ _i: the bias factor of the corresponding described reference transmission form of i kind Traffic Channel;

K _{Ed, ref}: reference transmission form enhanced uplink Dedicated Physical Data Channel data carried by data bit number;

K _{Ed, j}: j kind transformat enhanced uplink Dedicated Physical Data Channel data carried by data bit number.

11, enhanced uplink special physical channel output control device according to claim 7 is characterized in that, described signaling is a radio bearer control signaling.

12, enhanced uplink special physical channel output control device according to claim 11, it is characterized in that described radio bearer control signaling comprises that radio bearer sets up that signaling, radio bearer are reshuffled signaling, transmission channel reshuffles signaling and physical channel is reshuffled signaling.

Images