CN1918820A - Method for reusing ovsf codes of allocated physical channels for transmitting data via enhanced up-link in wcdma - Google Patents

Abstract

The present invention supposes a situation in which an Enhanced Uplink Dedicated transport Channel (EUDCH) is used in a mobile communication system. The present invention proposes a method for increasing the maximum possible number of code channels for E-DPDCH by dynamically allocating OVSF codes allocated to DPDCH and HS-DPCCH supporting a high-speed downlink packet service, to a E-DPDCH every TTI. Therefore, a Node B can normally demodulate E-DPDCH/DPDCH/HS-DPCCH data, increasing a EUDCH data rate.

Description

In the code division multiple access via enhanced uplink reuse distribute the method for the ovsf code of physical channel

Invention field

The present invention relates generally to a kind of mobile communication system, particularly, the present invention relates to a kind of method of distributing best ovsf (OVSF) code and same-phase/quadrature phase (I/Q) channel to the uplink physical channel of enhanced uplink dedicated transport channel (EUDCH) service.

Background technology

Current, mobile communication system is used Dedicated Physical Data Channel (DPDCH) and Dedicated Physical Control Channel (DPCCH) the typical dedicated channel as transmitting user data thereon in the line link.DPDCH is a kind of data transmission channel that transmits thereon such as the user data of voice and image, and DPCCH be a kind of transport the DPDCH frame format information thereon and be used for DPDCH separate and be in harmonious proportion the control information transfer channel of guiding (pilot) information of power control.

Recently, a kind of use has been proposed, to improve speed and the efficient that grouped data transmits in the up link as the enhanced uplink technology of the EUDCH of data (data-only) transfer channel only.

Fig. 1 is a figure, illustrates the information that is exchanged between subscriber's installation and node B that is used to carry out ul transmissions.

With reference to Fig. 1, subscriber's installation UE 110,112,114 and 116 according to they with the distance of node B 100 with different through-put power transmitting grouped datas.The UE 110 that places at a distance of longest distance with node B 100 at uplink channel with maximum transmission power 120 transmitting grouped datas, and the UE 114 that places at a distance of beeline with node B at uplink channel with minimum through-put power 124 transmitting grouped datas.In order to improve the performance of mobile communication system, node B 100 can dispatch by so a kind of mode: the level of uplink channel transmission power should be inversely proportional to data rate.That is, node B distributes minimum data rate at uplink channel to the UE with maximum transmission power, and distributes the highest data rate at uplink channel to the UE with minimum through-put power.

Fig. 2 has illustrated the information that is exchanged that is used to carry out ul transmissions between UE and node B.That is, Fig. 2 has illustrated the required basic process between node B 200 and UE 202 that is used for being undertaken by EUDCH packet data transmission.

With reference to Fig. 2, in step 210, between node B 200 and UE 202, set up EUDCH.Step 210 comprises the processing by dedicated transmission channel transmission/reception message.After step 210, UE 202 sends about the information of desirable data rate and the information of indication uplink channel conditions to node B 200 in step 212.The information of indication uplink channel conditions comprises the through-put power of the uplink channel that UE 202 is sent and the through-put power surplus (margin) of UE 203.

The node B 200 that receives uplink channel transmission power can be by comparing uplink channel transmission power and received power and the estimating down-ward link channel condition.Promptly, if the difference between uplink channel transmission power and the uplink channel received power is less, then node B 200 thinks that uplink channel conditions is good, and if the difference between this through-put power and this received power is very big, think that then uplink channel conditions is a difference.When the UE transmission was used for the through-put power surplus of estimating uplink channel condition, node B 200 can be by deducting the through-put power surplus and the estimating uplink through-put power from the known possibility maximum transmission power at EU.Node B 200 uses the channel condition of estimated UE 202 and about the information of UE 202 desired data rates, determines the possible maximum data rate of the uplink packet channel of UE 202.

In step 214, determined possible maximum data rate notice UE 202.UE 202 determines to send the data rate of grouped data in the possible maximum data rate scope of being notified, and sends grouped data with determined data rate to node B 200 in step 216.

Here, support the uplink physical channel of EUDCH to comprise Dedicated Physical Data Channel (DPDCH), Dedicated Physical Control Channel (DPCCH), be used for the High-Speed Dedicated Physical Control Channel (HS-DPCCH) of HSDPA service, at the enhancing Dedicated Physical Data Channel (E-DPDCH) of EUDCH service and at the enhancing Dedicated Physical Control Channel (E-DPCCH) of EUDCH service.

That is, in step 216, frame format and the chnnel coding information of E-DPCCH that UE 202 sends as control channel so that the E-DPDCH channel to be provided, and by E-DPDCH transmission grouped data.Herein, E-DPCCH can also be used for the transmission of UE 202 desired uplink data rates and through-put power surplus, and the node B 200 desired transmission that are used for the guidance information of E-DPDCH demodulation.

If in order to send EUDCH grouped data described above, UE 202 also sends independently physical channel except that existing physical channel, then the number of the physical channel that is transmitted in this up link increases, thereby cause peak-average power ratio rate (peak-to-average power ratio, PAPR) increase of up link.Generally, the number of the physical channel of Fa Songing increases manyly more simultaneously, and PAPR increases also just manyly more.

Because the adjacent channel leakage power ratio (ACLR) that the increase of PAPR may increase the distortion factor of transmission signals and be allowed, so the radio frequency among the UE (RF) power amplifier requires back-off (back-off).If UE carries out back-off, then back-off can cause the reducing of received power at receiver place among the node B, thereby causes the increase of the error rate of the data that received.

Therefore, in order to prevent the increase of PAPR, UE often transmits EUDCH based on timesharing on the existing physical channel such as DPDCH, rather than transmits EUDCH on independent physical channel.Yet, cause the increase of implementation complexity based on the processing of timesharing transmission EUDCH on existing physical channel.

Consider this problem, the WCDMA system has proposed a kind of method that before the transmission physical channel be multiply by the OVSF code that satisfies mutual orthogonality in up link.Can distinguish the physical channel that multiply by OVSF among the node B.

Fig. 3 is a figure, illustrates the tree structure of the OVSF code that is generally used for the WCDMA system.

With reference to Fig. 3, can generate the OVSF code simply to the computing of equation (3) with equation (1).

Equation (1)

C _ch，1，0＝1，

Equation (2)

$\left[\begin{array}{c}{C}_{\mathrm{ch},\mathrm{2,0}}\\ C_{\mathrm{ch},\mathrm{2,1}}\end{array}\right]=\left[\begin{array}{cc}{C}_{\mathrm{ch},\mathrm{1,0}}& C_{\mathrm{ch},\mathrm{1,0}}\\ C_{\mathrm{ch},\mathrm{1,0}}& -C_{\mathrm{ch},\mathrm{1,0}}\end{array}\right]=\left[\begin{array}{cc}1& 1\\ 1& -1\end{array}\right],$

Equation (3)

$\left[\begin{array}{c}{C}_{\mathrm{ch},2^{(n+1)},0}\\ C_{\mathrm{ch},2^{(n+1)},1}\\ C_{\mathrm{ch},2^{(n+1)},2}\\ C_{\mathrm{ch},2^{(n+1)},3}\\ \·\\ \·\\ C_{\mathrm{ch},2^{(n+1)},2^{(n+1)}-2}\\ C_{\mathrm{ch},2^{(n+1)},2^{(n+1)}-1}\end{array}\right]=\left[\begin{array}{cc}{C}_{\mathrm{ch},2^n,0}& C_{\mathrm{ch},2^n,0}\\ C_{\mathrm{ch},2^n,0}& -C_{\mathrm{ch},2^n,0}\\ C_{\mathrm{ch},2^n,1}& C_{\mathrm{ch},2^n,1}\\ C_{\mathrm{ch},2^n,1}& {-C}_{\mathrm{ch},2^n,1}\\ \·& \·\\ \·& \·\\ C_{\mathrm{ch},2^n,2^n-1}& C_{\mathrm{ch},2^n,2^{n-1}}\\ C_{\mathrm{ch},2^n,2^n-1}& -C_{\mathrm{ch},2^n,2^n-1}\end{array}\right]$

As shown in Figure 3, the OVSF code is characterised in that: guaranteed to have the orthogonality between the code of the same spread factor (SF).

In addition, for two codes,, then between these two codes, obtained orthogonality if can not use equation (3) to generate code with big SF value from code with less SF value with different SF values.Below, will be described it by way of example.

For SF=4, C _{Ch, 4,0}=(1,1,1,1) and C _{Ch, 2,1}=(1 ,-1) quadrature, but not with C _{Ch, 2,0}=(1,1) quadrature.

As another example, OVSF code and the C of SF=256 _{Ch, 2,0}=(1,1) is compared, because the OVSF code of SF=0～127 is from C _{Ch, 2,1}=(1,1) generates, so do not guarantee the orthogonality between them.That is, when the data rate of having relatively high expectations, use OVSF code, and when transmitting a plurality of physical channel simultaneously with less SF value, should be by guaranteeing that the mode of the orthogonality between the OVSF code distributes the OVSF code.

Even two physical channels have used identical OVSF code, if they are to transmit independently by the I channel of transmitter and Q channel, then receiver can separate these two physical channel signal and physical channel signal that demodulation separated under the situation of no phase mutual interference, and this is because the signal that is transmitted on I channel and the Q channel is to be carried by the carrier wave with phase quadrature.

As mentioned above, the increase of up link PAPR depend in the up link physical channel of transmission simultaneously number, the power ratio between the physical channel, be used for the OVSF code of each physical channel and at the I/Q channel allocation of each physical channel.

In addition, when transmitting several DPDCH channels or the extra up link HS-DPCCH physical channel that transmits at the high-speed downlink packet access in the down link (HSDPA) service simultaneously, current WCDMA system increases so that prevent PAPR to DPDCH and suitable OVSF code and the I/Q channel of HS-DPCCH channel allocation.For DPDCH, current Rel-5 WCDMA standard has been determined the maximum number of the DPDCH that can transmit during initial call is set up, and distributes and at the as many OVSF code of the determined number of DPDCH.

Therefore, for the current mobile communication system of using limited radio frequency resource obtains high EUDCH data rate, exist can effectively distributing the technology requirement of up link OVSF code to E-DPDCH.That is, to the E-DPDCH channel allocation OVSF code that can be used for up link as much as possible, so that high speed EUDCH is provided data, services.

Summary of the invention

Therefore, an object of the present invention is, a kind of method of effectively distributing the OVSF code in mobile communication system for the physical channel of support uplink is provided.

Another object of the present invention is to provide a kind of and effectively distribute the OVSF code so that pass through the method for enhanced uplink transmitting grouped data in mobile communication system.

Another purpose of the present invention is, provides a kind of in the mobile communication system of support uplink, at the physical channel that is used for the enhanced uplink packet transmission, reuses the method that institute distributes to the orthogonal code of supporting different physical channels of serving.

According to an aspect of the present invention, to achieve these goals, a kind of different service method of support sharing identical ovsf (OVSF) code in mobile communication system by UE are provided, this method comprise the following steps: to consider to be used for second service grouped data quantity and determine the maximum number of assignable channel; Determine the maximum number of the channel set up at first service different with second service; And to redistributing the OVSF code of being set up at first service that channel distributed at the determined channel of second service, the grouped data of spread spectrum second service, and the grouped data of transmission institute spread spectrum.

According to a further aspect in the invention, to achieve these goals, a kind of method that strengthens grouped data in mobile communication system by subscriber's installation (EU) transmission is provided, and this method comprises the following steps: the maximum number of definite enhanced uplink Dedicated Physical Data Channel (E-DPDCH) that can transmit simultaneously; Number that strengthens the needed ovsf of packet service (OVSF) code and the number of determined E-DPDCH are compared; And if the number of E-DPDCH is bigger, then do not redistribute to E-DPDCH by opposite order do not transmit the OVSF code that is allocated in DPCH (DPDCH) that strengthens grouped data thereon in a certain transmission time.

According to a further aspect of the invention, to achieve these goals, a kind of method that strengthens packet service in mobile communication system by subscriber's installation (EU) support is provided, and this method comprises the following steps: the maximum number of definite enhanced uplink Dedicated Physical Data Channel (E-DPDCH) that can transmit simultaneously; Number that strengthens the needed ovsf of packet service (OVSF) code and the number of determined E-DPDCH are compared; And if the number of E-DPDCH is bigger, then redistributes and be allocated in the OVSF code that does not transmit the DPCH (DPDCH) that strengthens grouped data in a certain transmission time thereon to E-DPDCH.

Description of drawings

By the following detailed description also in conjunction with the accompanying drawings, above and other objects of the present invention, feature and advantage will become more apparent, wherein:

Fig. 1 has illustrated to carry out the subscriber's installation (UE) of ul transmissions and the figure of node B;

Fig. 2 is explanation is used to carry out the information that is exchanged of ul transmissions between EU and node B figure;

Fig. 3 is the figure of the tree structure of explanation general purpose O VSF code;

What Fig. 4 was explanation according to the first embodiment of the present invention reuses the figure of transmission operation of UE of the OVSF code of DPDCH at E-DPDCH;

Fig. 5 is explanation according to the figure corresponding to the reception operation of the node B of Fig. 4 of the first embodiment of the present invention;

What Fig. 6 was explanation according to the first embodiment of the present invention reuses the figure of transmission operation of UE of the OVSF code of DPDCH at E-DPDCH;

Fig. 7 is explanation according to the figure corresponding to the reception operation of the node B of Fig. 6 of the first embodiment of the present invention;

Fig. 8 is the transmission operation to the UE of E-DPDCH dynamic assignment OVSF code that illustrates according to a second embodiment of the present invention;

Fig. 9 is the reception operation that node B according to a second embodiment of the present invention is described; And

Figure 10 illustrates the structure of uplink physical channel and the figure of sequential according to an embodiment of the invention.

Embodiment

Now, describe several preferred embodiments of the present invention with reference to the accompanying drawings in detail.In the following description, for for purpose of brevity, omitted to incorporate into herein known function and the detailed description of configuration.

The present invention proposes a kind of like this method: wherein,, dynamically use OVSF code and I/Q channel when transmission except present physical channel during respectively as E-DPCCH that is used for the control channel of EUDCH packet data transmission and data channel and E-DPDCH.Technology proposed by the invention be intended to minimize in the up link the signal of extra requirement send (signaling) expense, and maximization is by the efficiency of transmission of the EUDCH data of E-DPDCH physical channel.

In addition, the present invention also is intended to keep the back compatible with existing Rel-99 and Rel-5 WCDMA standard, prevents the influence to the allocation rule of existing DPDCH, DPCCH and HS-DPCCH channel thus.

In the EUDCH service, because the EUDCH grouped data requires high data rate, so can transmit a plurality of E-DPDCH physical channels simultaneously.Yet the E-DPCCH for as the control physical channel can transmit single E-DPCCH.Herein, the buffer state of E-DPCCH transmission EU, or transmit uplink through-put power, uplink transmission power surplus and channel condition information, these are the needed information that is used for the estimating uplink channel condition of node B.In addition, E-DPCCH also transmits the EUDCH-transmit format indicator (E-TFI) at the EUDCH service of transmitting on E-DPDCH.Dedicated Physical Data Channel at the EUDCH service is provided by the determined data rate transport grouped data of schedule information that is provided according to from node B.

Therefore, the invention provides a kind of every TTI (Transmission Time Interval, Transmission Time Interval) dynamically distribute the method for OVSF code of the DPDCH that distributes to and HS-DPCCH, increased the number of the E-DPDCH channel that can transmit simultaneously thus.

Under first kind of situation, the code that is used for DPDCH is pre-assigned with the code that is used for E-DPDCH.

Promptly, under the situation of considering as carrying out in the current Rel-5 WCDMA standard the maximum number of the determined DPDCH of transmission channel during initial call is set up, dispense needles is distributed the unallocated OVSF code of giving such as other physical channel of DPDCH and HS-DPCCH for E-DPDCH then to the OVSF code of DPDCH.In other words, selected with the as many assigned code of institute in advance of the maximum number of the E-DPDCH channel that can transmit at every Transmission Time Interval (TTI) at E-DPDCH, and be used for the E-DPDCH transmission.

Under second kind of situation, different with first kind of situation, do not allocate the code that is used for E-DPDCH transmission in advance, and every TTI is the transmission that is not used for being used for such as the residue code of the transmission of the physical channel of DPDCH, DPCCH and HS-DPCCH E-DPDCH.By doing like this, can improve the efficient of the physical channel code that is used for the E-DCH transfer of data.

Under afore-mentioned, although the number of the E-DPDCH physical channel that different TTI is transmitted is equal to each other, the OVSF code that is used for E-DPDCH changes according to the number of the DPDCH channel that corresponding TTI transmitted.

In both cases, for demodulation E-DPDCH data, node B is necessary to obtain the OVSF code information that is used for the E-DPDCH channel.For this reason, UE may be necessary to node B with the code that signal sends the transmission that is used for the E-DPDCH channel.The reduction that this increase of signal transmission expense causes up-line system capacity and sub-district (cell) to cover.

Therefore, the present invention proposes and can dynamically use the OVSF code that is not used for such as other physical channel of DPDCH and HS-DPCCH at E-DPDCH by every TTI, anti-simultaneously stop signal sends the extra technology that increases of expense.

Therefore, the present invention only uses according to size (bit number) information of the transmission EUDCH data block of above-mentioned two embodiment and chnnel coding information setting E-TFI, makes normally demodulation E-DPDCH data of node B thus.

Table 1 has illustrated when not setting up HS-DPCCH, at I/Q channel and the OVSF assignment of code of E-DPDCH.

Table 1

The maximum number of the DPDCH that can transmit	The maximum number of the E-DPDCH that can transmit	E_DPDCH distributes
			1	5	(Q，SF，SF/4)，(I，4，3)，(Q， 4，3)，(I，4，2)，(Q，4，2)
2	4	(I，SF，SF/2+SF/4)，(Q，4，3)， (I，4，2)，(Q，4，2)
			3	3	(Q，SF，SF/2+SF/4)，(I，4，2)， (Q，4，2)
4	2	(I，SF，SF/2)，(Q，4，2)
			5	1	(Q，SF，SF/2)

As mentioned above, transmit therein in the current Rel-5 WCDMA standard of several DPDCH channels, if according to data rate SF _DPDCHBe arranged to 4, then can sequentially be used for DPDCH to the OVSF code of (I, 4,1), (Q, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2) and (Q, 4,2).Therefore, the maximum number that can consider the DPDCH channel that can transmit is used for E-DPDCH to the requisite number purpose residue code except that the code of before distributing to DPDCH in these 6 codes according to the UEDCH data rate.

In table 1, if the maximum number of the DPDCH that can transmit is 1, then maximum 5 codes can be used to transmit the E-DPDCH channel of EUDCH data.In table 1,4,8,16,32,64,128,256 and 512 can be used for SF _E-DPDCHThat is, if the SF of E-DPDCH _E-DPDCHBe set to 4, then EUDCH uses OVSF code (4,1) to transmit E-DPDCH1 in the Q channel according to data rate, and uses OVSF code (4,3) to transmit E-DPDCH2 in the I channel.In addition, also use OVSF code (4,3) in the Q channel, to transmit E-DPDCH3, and use OVSF code (4,2) in the I channel, to transmit E-DPDCH4.And, the 5th E-DPDCH that can reallocate, thus can use OVSF code (4,2) in the Q channel, it to be transmitted.

Yet, in table 1,, and use (Q, 256,64) to set up HS-DPCCH if can transmit maximum 1 DPDCH, sequentially distribute 4 OVSF codes (I, SF to E-DPDCH in addition according to the EUDCH data rate _E-DPCCH, SF _E-DPCCH/ 2+S _FE-DPCCH/4), (Q, 4,3), (I, 4,2) and (Q, 4,2).Herein, because HS-DPCCH is allocated in (Q, 256,64), so in the Q channel, be difficult to OVSF code (4,1) is used for E-DPDCH.

As mentioned above, determine the maximum number of the E-DPDCH that can transmit according to the existence of maximum number and the HS-DPCCH of the DPDCH that can transmit/do not exist.In addition, when using a plurality of codes transmission DPDCH, can be used for the decreased number of the OVSF code of E-DPDCH with repelling, thereby cause the maximum number of the E-DPDCH that can transmit to reduce.The result is to have reduced the EUDCH data rate.

At this on the one hand, first and second embodiment of the present invention proposed a kind of at E-DPDCH reuse the OVSF code of the DPDCH that distributes to and HS-DPCCH increased the method that can transmit the maximum number of E-DPDCH thus.

First embodiment

Now, with describe according to the first embodiment of the present invention at E-DPDCH use the method for OVSF code of the DPDCH that distributes to and HS-DPCCH.

1) do not set up HS-DPCCH

If the maximum number of the DPDCH channel that can transmit is 3, and do not set up HS-DPCCH, then can use maximum 3 codes of (I, 4,1), (Q, 4,1) and (I, 4,3) to come many code transmission (multicode-transmit) DPDCH.As can be seen from Table 1, the OVSF code that can be used for E-DPDCH comprises three codes (Q, 4,3), (I, 4,2) and (Q, 4,2) that are used to realize many codes transmission.

Even if E-DPDCH is allocated in its three codes (Q, 4,3), (I in use, 4,2) and (Q, 4,2) can not satisfy data rate under the situation, then can be reused for the transmission of E-DPDCH to the code of distributing to DPDCH to satisfy data rate.That is, can transmit maximum 6 E-DPDCH physical channels.

Under this mode, DPDCH code as shown in table 2 additionally is used for the transmission of E-DPDCH, so that node B is normally demodulation E-DPDCH and DPDCH.

Table 2

The number of transmission E_DPDCH	The extra DPDCH code that uses of E_DPDCH
		4	(I，4，3)
5	(I，4，3)，(Q，4，1)
		6	(I，4，3)，(Q，4，1)，(I，4，1)

As illustrated in the table 2, the OVSF code distributing method among first embodiment distributes the OVSF code by the opposite order of distributing to DPDCH to E-DPDCH.

For example, if the number of the E-DPDCH that should transmit simultaneously is 4,3 codes (Q, 4 having used in order and distributed to E-DPDCH, 3), (I, 4,2) and (Q, 4,2), and by the opposite order of the OVSF code of distributing to DPDCH use (I, 4,3) to be used for transmitting extraly E-DPDCH4.Herein, when 3 DPDCH of transmission, code (I, 4,3) is the code that is assigned to the 3rd last DPDCH channel.That is, the present invention additionally is distributed in the OVSF code (I, 4,3) that has lowest priority among the DPDCH to E-DPDCH4, has satisfied the data rate of E-DPDCH thus, has kept the orthogonality between E-DPDCH and the DPDCH simultaneously.

As another example,, then the code (I, 4,3) of distributing to DPDCH and extra code (Q, 4,1) are distributed to E-DPDCH4 and E-DPDCH5 if the number of the E-DPDCH that should transmit simultaneously is 5.

Yet, do not transmit therein among the TTI of DPDCH, can by selecting sequence distribute to 3 codes (I, 4 of DPDCH, 1), (Q, 4,1) and (I, 4,3), by the reversed sequence of this distribution, according to (Q, 4,3), (I, 4,2), (Q, 4,2), (I, 4,3), (Q, 4,1) and the order of (I, 4,1) transmit maximum 6 E-DPDCH.Now, wherein SF will be described _E-DPDCHIt is 4 situation.

2) use code (Q, 256,64) to set up HS-DPCCH

If HS-DPCCH uses code (Q, 256,64), and DPDCH uses code, and (SF SF/4), then can not transmit the transmission that among the TTI of HS-DPCCH or DPDCH (Q, 4,1) and (I, 4,1) is reused for E-DPDCH therein.

More particularly, transmit at the ack/nack signal of HSDPA service and the CQI of indication uplink channel state information by HS-DPCCH.Only when in down link, receiving HSDPA when grouping transferring ACK/NACK signal, and by determined 2ms-TTI periodic transfer CQI during setting up in initial HSDPA service.Therefore, also the HS-DPCCH channel can be reused for the transmission of E-DPCCH.Especially, for HS-DPCCH,, be simple so reuse code for E-DPDCH because node B and UE all correctly understand transmission time sequence.

Therefore, if distributing three codes (Q, 4,3), (I, 4,2) and (Q, 4,2) to set up E-DPDCH extraly owing to not satisfied data rate afterwards to E-DPDCH, then consider whether use HS-DPCCH and distribute the E-DPDCH channel.In addition, distribute the OVSF code by the reversed sequence of the distribution of the code that is not used for DPDCH.Number for the physical channel of the DPDCH that allows E-DPDCH to reuse to be used for the code of DPDCH and HS-DPCCH as mentioned above, need node B correctly to understand to transmit and E-DPDCH from UE.Should be guaranteed this, so that node B can normal demodulation DPDCH and E-DPDCH data.

Fig. 4 is a flow chart, and the transmission operation according to the UE that reuses the DPDCH code of the first embodiment of the present invention has been described.

With reference to Fig. 4, if UE wishes the grouped data by high data rate transfer EUDCH, then it requires a plurality of E-DPDCH be directly proportional with this data rate in step 400, therefore, UE judges to have transmitted what DPDCH channels in the TTI that pin is transmitted corresponding EUDCH grouped data during it, and determines untapped DPDCH channel code in this TTI.

In step 402, UE consider in addition this TTI in be not used for determining to satisfy the EUDCH throughput under the situation of code of DPDCH transmission and the number N of the E-DPDCH channel that will be transmitted simultaneously.

In step 404, UE is provided with E-TFI, so that node B can understand the number of the E-DPDCH that is transmitted among this TTI.Reuse in the method at aforementioned DPDCH code, E-TFI as existing DPDCH transport-format combination indicator (TFCI), is enough to comprise the size (bit number) and the chnnel coding information of the DPDCH data block that is transmitted.Node B can according to these information determine transmit the number of E-DPDCH channel, and can be identified for the OVSF code of E-DPDCH channel according to these information.

In step 406, whether the number N that UE judges the E-DPDCH channel that will transmit simultaneously is greater than using the in addition number M of channel transmitted of E-DPDCH (E-DPDCH-only) OVSF code only.If the number N of determining the E-DPDCH channel that will transmit simultaneously in step 406 is greater than using the in addition number M of channel transmitted of E-DPDCH OVSF code only, then UE advances to step 408.

In step 408, UE distributes and the as many code of required channel number (N-M) to E-DPDCH among the code of distributing to DPDCH by the opposite order of assignment of code between many codes of DPDCH transmission period.

In step 410, UE distributes only E-DPDCH OVSF code to E-DPDCH.Described as reference table 1, if the maximum number of the DPDCH that can transmit is 3, then UE is by three code (I of distributing to DPDCH, 4,1), (Q, 4,1) and the reversed sequence of the distribution of (I, 4,3), promptly by (I, 4,3), (Q, 4,1) and (I, 4,1) order, order is additionally to the E-DPDCH allocation of codes.

Yet, if the number N of the E-DPDCH channel that will transmit simultaneously less than can use E-DPDCH OVSF code only in addition the number M of channel transmitted (N＜M), UE N only the E-DPDCH assignment of code give E-DPDCH.In step 412, UE uses determined OVSF code that spread spectrum E-DPDCH is transferred to node B.At this moment, UE is transmitted in E-TFI set in the step 404 together.The set E-TFI of transmission on E-DPDCH or E-DPCCH.

Fig. 5 is a flow chart, and the reception operation according to the node B that reuses DPDCH of the first embodiment of the present invention has been described.

With reference to Fig. 5, in step 500, node B is received in the uplink physical channel among the TTI.In step 502, this node B at first carries out to separate to E-TFI and is in harmonious proportion decoding with demodulation E-DPDCH data.In addition, node B also determines the number of the E-DPDCH channel that transmitted in set TTI according to E-TFI.In addition, node B can also be identified for the OVSF code of the E-DPDCH channel that received according to following described process.

In step 504, node B judges that whether the number N of E-DPDCH channel is greater than the number M that distributes to the OVSF code of E-DPDCH channel with repelling.If determine N greater than M in step 504, then node B advances to step 506.

In step 506, according to the first embodiment of the present invention, node B is according to reusing rule at the OVSF code of E-DPDCH, giving the E-DPDCH data demodulator corresponding to the assignment of code of E-DPDCH, determine by with the reversed sequence of the assignment of code of the many codes transmission of DPDCH the OVSF assignment of code in E-DPDCH.

In step 508, node B is giving the E-DPDCH data demodulator at the only E-DPDCH assignment of code of DPDCH transmission.In addition, node B gives E-DPDCH the DPDCH assignment of code of reusing by reversed sequence.Therefore, node B can determine the data that transmit on E-DPDCH.Yet if conclude N＜M in step 504, the corresponding assignment of code of node B handle in step 508 is in the E-DPDCH data demodulator, and this is because it can pre-determine the E-DPDCH code that is used for E-DPDCH according to pre-defined rule.Promptly when N＜M, node B is determining that UE uses only E-DPDCH OVSF code to carry out under the situation of transmission, uses the OVSF code that is distributed, demodulation E-DPDCH signal in the E-DPDCH data demodulator in step 510.

For the demodulation of DPDCH, the TFCI of the DPDCH that node B can be transmitted on DPCCH by demodulation, and determine the number of the DPDCH channel that UE is transmitted.According to the OVSF assignment of code rule at DPDCH, node B is identified for the OVSF code of DPDCH transmission, and demodulation DPDCH channel normally.That is, UE and node B are unaffected respectively in the process of transmission and demodulation DPDCH, and this is because UE distributes the OVSF code to E-DPDCH extraly when keeping DPDCH assignment of code rule.

Use aforementioned DPDCH code to reuse method, node B can obtain the code information that is used for E-DPDCH under the situation of the TFCI of not demodulation DPDCH information, has prevented that thus E-DPDCH from separating the time delay in the mediation HARQ operation.

With reference to Fig. 6 and 7, will be described in now DPDCH and HS-DPCCH code will be reused for the transmission operation of UE under the situation of E-DPDCH and the reception operation of node B.

Fig. 6 is a flow chart, and the transmission operation of the UE that reuses the E-DPDCH code according to an embodiment of the invention has been described.

With reference to Fig. 6, in step 600, UE judges whether to have transmitted HS-DPCCH and DPDCH in corresponding E-DPDCHTTI for code reuse.That is, UE judges whether to have transmitted code and the HS-DPCCH that is not used for DPDCH and HS-DPCCH transmission in TTI.

In step 602, UE consider in addition this TTI in be not used for determining to satisfy the EUDCH throughput under the situation of code of DPDCH transmission and the number N of the E-DPDCH channel that will be transmitted simultaneously.In step 604, UE is provided with E-TFI, so that node B can understand the number of the E-DPDCH that is transmitted among this TTI.

In step 606, whether the number N that UE judges the E-DPDCH channel that will transmit simultaneously is greater than using the in addition number M of channel transmitted of E-DPDCH OVSF code only.If the number N of determining the E-DPDCH channel that will transmit simultaneously in step 606 is greater than using the in addition number M of channel transmitted of E-DPDCH OVSF code only, then UE advances to step 608.

In step 608, UE judges whether it should additionally use a code that is used for E-DPDCH, if then UE advances to step 610.

In step 610, UE judges in corresponding E-DPDCH TTI whether transmit HS-DPCCH.If do not transmit HS-DPCCH, then UE advances to step 614.In step 614, UE distributes to E-DPDCH to a code (Q, 4,1) of distributing to HS-DPCCH extraly.It is UE reuses the HS-DPCCH that distributes to that service is not provided in this TTI for E-DPDCH code (Q, 4,1).Yet if determine to transmit HS-DPCCH simultaneously in step 610 in TTI, UE advances to step 612.In step 612, UE distributes to E-DPDCH to the code of distributing to DPDCH (I, 4,1) extraly determining not transmit under the situation of DPDCH.

Should distribute two OVSF codes for E-DPDCH extraly if in step 608, determine UE, promptly in TTI, do not provide service for HS-DPCCH and DPDCH, then UE distributes the code (I of the DPDCH that distributes to extraly to E-DPDCH in step 616,4,1) and the code (Q of the HS-DPCCH that distributes to, 4,1).

If the number N of determining the E-DPDCH channel that will transmit simultaneously in step 606 is less than using the in addition number M of channel transmitted (N＜M) of E-DPDCH OVSF code only, if promptly using only, the OVEF code of E-DPDCH satisfies data rate, then UE advances to step 618, in step 618, it also distributes N required only E-DPDCH code to E-DPDCH.In step 620, the E-TFI that the UE transmission uses determined OVSF code to transmit E-DPDCH together and set in advance.

Fig. 7 is a flow chart, and the reception operation of the node B that reuses the HS-DPCCH code according to an embodiment of the invention has been described.

With reference to Fig. 7, in step 700, node B receives the uplink channel among the TTI.In step 702, this node B separates E-TFI and is in harmonious proportion decoding, with the E-DPDCH data that demodulation was received, and the number of the E-DPDCH channel of determining among the TTI to be transmitted according to E-TFI.

In step 704, node B judges that whether the number N of E-DPDCH channel is greater than the number M that distributes to the OVSF code of E-DPDCH channel with repelling.If determine N greater than M in step 704, then node B advances to step 706.

In step 706, node B judges that whether the number N of the E-DPDCH channel that is transmitted is greater than the number M of specific assigned to the code of E-DPDCH channel.If N is bigger by 1 than M, then node B advances to step 708.In step 708, node B determines whether to have transmitted simultaneously HS-DPCCH according to the transmission time sequence value of setting at HS-DPCCH.

If do not transmit HS-DPCCH simultaneously, then node B advances to step 712.In step 712, node B uses the code (Q, 4,1) that is used for E-DPDCH rather than HS-DPCCH that E-DPDCH is carried out demodulation extraly.

If determine to have transmitted HS-DPCCH simultaneously in step 708 in E-DPDCH TTI, then node B advances to step 710, and wherein, node B uses the code (I, 4,1) that is used for E-DPDCH rather than DPCCH that E-DPDCH is carried out demodulation extraly.

Yet, in node B demodulation after the E-TFI, if the number N of in step 706, determining the E-DPDCH channel than repulsion distribute to the code of E-DPDCH number M many two, node B advances to step 714.This means in TTI not to HS-DPCCH and DPDCH service is provided.Therefore, in step 714, node B uses code (I, 4,1) and (Q, 4,1) the demodulation E-DPDCH data that are used for E-DPDCH rather than HS-DPCCH and DPDCH extraly.Be node B determining that according to E-TFI UE has used under the situation of (I, 4,1) and (Q, 4,1) extraly, use employed code (I, 4,1) and (Q, 4,1) demodulation E-DPDCH data extraly.As mentioned above, only when not transmitting HS-DPCCH and DPDCH in TTI, this is only feasible.

In step 716, node B can be identified for the E-DPDCH code of E-DPDCH according to predetermined OVSF assignment of code rule.In step 718, node B can use only that the E-DPDCH code carries out demodulation to the E-DPDCH data.

As mentioned above, when during initial call is set up, having distributed only E-DPDCH OVSF code, first embodiment provide a kind of for E-DPDCH reuse extraly the technology of OVSF code of the DPDCH that distributes to and HS-DPCCH.

Second embodiment

Now, will describe every TTI according to second embodiment and dynamically distribute all the other codes be not used for such as the transmission of the physical channel of DPDCH, DPCCH and HS-DPCCH to E-DPDCH, rather than the initial allocation technology of E-DPDCH OVSF code only.In this case, node B can only use entrained EUDCH data block size of E-TFI and chnnel coding information demodulation E-DPDCH data normally, and need not directly to send OVSF code and the I/Q channel information that is used for the DPDCH transmission with signal to node B.

Fig. 8 has illustrated the transmission operation of the UE of dynamic assignment E-DPDCH code according to a second embodiment of the present invention.Fig. 9 has illustrated that node B uses the process of the E-DPDCH code demodulation E-DPDCH data of dynamic assignment.As shown in figure 10, this is a kind of technology of mainly using when DPDCH 1000 and E-DPDCH 1002 are mutually the same aspect frame length and sequential.

In Figure 10, DPCCH 1010 and E-DPCCH 1012 have the hardwood length 1004 of 10ms, the size of 1011 data block transmitted of DPDCH and the TFCI 1006 of chnnel coding information are passed through in the transmission indication on DPCCH 1010.

In addition, pass through the size of 1013 data block transmitted of E-DPDCH and the E-TFI 1008 of chnnel coding information by the corresponding field transmission indication of E-DPCCH 1012.Also can transmit E-TFI information although suppose by E-DPCCH Channel Transmission E-TFI information by E-DPDCH.Even in this case, also can utilize the following description by identical mode.Herein, generally speaking, transmission TFCI and E-TFI information on 15 time slots in a frame.

When E-DPDCH and DPDCH are equal to each other aspect transmission time sequence as mentioned above, the untapped OVSF code resource that can distribute UE as much as possible for the E-DPDCH transmission, node B is the data transmitted on E-DPDCH of demodulation simply, thereby have prevented the increase of the expense that signal sends in the up link.

That is, UE uses size and the chnnel coding information of E-TFI to node B transmission EUDCH data block, and need not directly to send OVSF code and the I/Q channel information that is used for the E-DPDCH Channel Transmission with signal to node B.Therefore, node B can only use E-TFI demodulation E-DPDCH data normally.

Herein, according to following factors definite OVSF code and I/Q channel allocation at E-DPDCH.

1. the number and the OVSF code of the DPDCH channel that is transmitted among the corresponding TTI.

2.HS-DPCCH foundation/non-foundation.

3. the size of the EUDCH data block of being transmitted, and the number of E-DPDCH channel.

Table 3 and table 4 are according to the number of DPDCH that transmits in the current TTI and E-DPDCH, and indication DPDCH and E-DPDCH channel use which OVSF code and I/Q channel.The assignment of code rule of definition list 3 and table 4 is so that be used for E-DPDCH to the OVSF code and the I/Q channel that are not used by DPDCH and HS-DPCCH among the corresponding TTI.As may be known from Table 3 and Table 4, employed OVSF code of E-DPDCH and I/Q channel change according to the number of the DPDCH channel that each TTI transmitted.Herein, 4,8,16,32,64,128,256 and 512 can be used for SF _E-DPDCH

In order to allow E-DPDCH assignment of code rule keep compatibility with existing standard, DPDCH and HS-DPCCH assignment of code rule are followed current WCDMA standard.Table 3 is not corresponding to wherein setting up HS-DPCCH, perhaps sets up HS-DPCCH and the maximum number of the DPDCH that can transmit is 2 or greater than 2 situation.

Table 3

The number of DPDCH	The number of E-DPDCH	The code that is used for DPDCH/E-DPDCH
			0	1	Do not have/(I, SF E-DPDCH，SF E-DPDCH/4)
2	There are not/(I, 4,1) (Q, 4,1)
		3		There are not/(I, 4,1) (Q, 4,1), (I, 4,3)
4	There are not/(I, 4,1) (Q, 4,1), (I, 4,3), (Q, 4,3)

	5	There are not/(I, 4,1) (Q, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2)
			6	There are not/(I, 4,1) (Q, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2), (Q, 4,2)
	1	1			(I，SF DPDCH，SF DPDCH/4)/ (Q，SF E-DPDCH，SF E-DPDCH/4)
2			(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(I，4，3)
		3		(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(I，4，3)，(Q，4，3)
4			(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(I，4，3)，(Q，4，3)，(I，4，2)
		5		(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(I，4，3)，(Q，4，3)，(I，4，2)， (Q，4，2)
2			1		(I，4，1)，(Q，4，1)/ (I，SF E-DPDCH，SF E-DPDCH/4+SF E-DPDCH/2)
	2	(I，4，1)，(Q，4，1)/ (I，4，3)，(Q，4，3)，
			3	(I，4，1)，(Q，4，1)/ (I，4，3)，(Q，4，3)，(I，4，2)
	4	(I，4，1)，(Q，4，1)/ (I，4，3)，(Q，4，3)，(I，4，2)，(Q，4，2)
			3	1	(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，SF E-DPDCH，SF E-DPDCH/4+SF E-DPDCH/2)
2	(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，4，3)，(I，4，2)
		3		(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，4，3)，(I，4，2)，(Q，4，2)

4	1	(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)/ (I，SF E-DPDCH，SF E-DPDCH/2)
			2	(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)/ (I，4，2)，(Q，4，2)
	5	1			(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)，(I， 4，2)/ (Q，4，2)

Table 4 has been represented and has wherein been set up HS-DPCCH, and the maximum number of the DPDCH that can transmit is 1 situation.

Table 4

The number of DPDCH	The number of E-DPDCH	The code that is used for DPDCH/E-DPDCH
			1	1	(I，SF DPDCH，SF DPDCH/4)/ (I，SF DPDCH，SF DPDCH/4+SF DPDCH/2)
2	(I，SF DPDCH，SF DPDCH/4)/ (I，4，3)，(Q，4，3)
		3		(I，SF DPDCH，SF DPDCH/4)/ (I，4，3)，(Q，4，3)，(I，4，2)
4	(I，SF DPDCH，SF DPDCH/4)/ (I，4，3)，(Q，4，3)，(I，4，2)， (Q，4，2)
		0		1	Do not have/(I, SF E-DPDCH，SF E-DPDCH/4)/
2	There are not/(I, 4,1) (I, 4,3)
			3	There are not/(I, 4,1) (I, 4,3), (Q, 4,3)
4	Do not have/(I, 4,1), (I, 4,3), (Q, 4,3) (I, 4,2),

5

There are not/(I, 4,1) (I, 4,3), (Q, 4,3), (I, 4,2), (Q, 4,2)

Why two kinds of independently situations are provided, the maximum number that reason is can to transmit therein DPDCH is under the situation of 1 table 4, at the Q channel HS-DPCCH that uses OVSF code (256,64), therefore can not be at the Q channel E-DPDCH that uses OVSF code (4,1).On the contrary, the maximum number of the DPDCH that can transmit is 2 or greater than under 2 the situation therein, HS-DPCCH uses code (I, 256,1) or (Q, 256,32), so as can to use with the situation of wherein not setting up HS-DPCCH in the identical E-DPDCH assignment of code rule of employed E-DPDCH assignment of code rule.

Table 5 and table 6, different with table 3 and table 4, provided wherein by the situation of reversed sequence dispense needles the I/Q channel of E-DPDCH.That is, by basic principle, at the OVSF code with same index (index), E-DPDCH at first is assigned to the Q channel, then is assigned to the I channel.

Table 5

The number of DPDCH	The number of E-DPDCH	The code that is used for DPDCH/E-DPDCH
			0	1	Do not have/(Q, SF E-DPDCH，SF E-DPDCH/4)
2	There are not/(Q, 4,1) (I, 4,1)
		3		There are not/(Q, 4,1) (I, 4,1), (Q, 4,3)
4	There are not/(Q, 4,1) (I, 4,1), (Q, 4,3), (I, 4,3)
		5		There are not/(Q, 4,1) (I, 4,1), (Q, 4,3), (I, 4,3), (Q, 4,2)
6	There are not/(Q, 4,1) (I, 4,1), (Q, 4,3), (I, 4,3), (Q, 4,2), (I, 4,2)

1	1	(I，SF DPDCH，SF DPDCH/4)/ (Q，SF E-DPDCH，SF E-DPDCH/4)
			2	(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(Q，4，3)，
	3	(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(Q，4，3)，(I，4，3)
			4	(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(Q，4，3)，(I，4，3)，(Q，4，2)
	5	(I，SF DPDCH，SF DPDCH/4)/ (Q，4，1)，(Q，4，3)，(I，4，3)，(Q，4，2)， (I，4，2)
			2	1	(I，4，1)，(Q，4，1)/ (Q，SF E-DPDCH，SF E-DPDCH/4+SF E-DPDCH/2)
2	(I，4，1)，(Q，4，1)/ (Q，4，3)，(I，4，3)
		3		(I，4，1)，(Q，4，1)/ (Q，4，3)，(I，4，3)，(Q，4，2)
4	(I，4，1)，(Q，4，1)/ (Q，4，3)，(I，4，3)，(Q，4，2)，I，4，2)
		3		1	(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，4，SF E-DPDCH，SF E-DPDCH/4+SF E-DPDCH/2)
2	(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，4，3)，(Q，4，2)
			3	(I，4，1)，(Q，4，1)，(I，4，3)/ (Q，4，3)，(Q，4，2)，(I，4，2)
4	1				(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)/ (Q，SF E-DPDCH，SF E-DPDCH/2)
		2	(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)/ (Q，4，2)，(I，4，2)
	5			1	(I，4，1)，(Q，4，1)，(I，4，3)，(Q，4，3)，(I，4，2) /(Q，4，2)

Table 6

The number of DPDCH	The number of E-DPDCH	The code that is used for DPDCH/E-DPDCH
			0	1	Do not have/(I, SF E-DPDCH SF E-DPDCH/4)
2	There are not/(I, 4,1) (Q, 4,3)
		3		There are not/(I, 4,1) (Q, 4,3), (I, 4,3)
4	There are not/(I, 4,1) (Q, 4,3), (I, 4,3), (Q, 4,2)
		5		There are not/(I, 4,1) (Q, 4,3), (I, 4,3), (Q, 4,2), (I, 4,2)
1	1				(I，SF E-DPDCH，SF E-DPDCH/4)/ (Q，SF E-DPDCH，SF E-DPDCH/4+SF E-DPDCH/2)
		2	(I，SF E-DPDCH，SF E-DPDCH/4)/ (Q，4，3)，(I，4，3)
	3			(I，SF E-DPDCH，SF E-DPDCH/4)/ (Q，4，3)，(I，4，3)，(Q，4，2)
		4	(I，SF E-DPDCH，SF E-DPDCH/4)/ (Q，4，3)，(I，4，3)，(Q，4，2)，(I，4，2)

In table 5 and table 6, SF _DPDCHAnd SF _E-DPDCHCan have value 4,8,16,32,64,128,256 and 512.For the OVSF code with same index, E-DPDCH at first is assigned to the Q channel, then is assigned to the I channel.

In table 5, when the maximum number of the DPDCH that can transmit is 0, and the number of E-DPDCH is 1 o'clock, OVSF code (4,1) distributed to E-DPDCH, and transmit in the Q channel.In this case, if, then also OVSF code (4,1) is distributed to the channel to I owing to distributed a channel to become 2 extraly with the number that satisfies data rate so that E-DPDCH.In table 5, when the maximum number of the DPDCH that can transmit is 1, and when transmitting two E-DPDCH, then (Q, 4,1) and (I, 4,3) are used for E-DPDCH.

In table 6, when the maximum number of the DPDCH that can transmit is 1 and when having HS-DPCCH, because HS-DPCCH has used (Q, 256,64), so E-DPDCH can not use OVSF code (Q, SF _E-DPDCH, SF _E-DPDCH/ 4).Do not transmit DPDCH therein and transmit among the TTI of two E-DPDCH, E-DPDCH uses code (I, 4,1) and (Q, 4,3), and does not use OVSF code (Q, 4,1).The OVSF code at E-DPDCH of the number of variations of the DPDCH that can transmit with each TTI can be determined by the number that the TFCI to DPDCH carries out the DPDCH that demodulation and identification can transmit by node B.

Fig. 8 is a flow chart, and the transmission operation of UE according to a second embodiment of the present invention has been described.

With reference to Fig. 8, in step 800, UE determines will to transmit therein how many DPDCH channels of transmission among the TTI of corresponding EUDCH data, and determines to can be used among this TTI the code of E-DPDCH transmission.

In step 802, UE considers OVSF code resource available among desired EUDCH data rate and the TTI and the number of definite E-DPDCH that will be transmitted simultaneously.If the number of the DPDCH channel that is transmitted among the TTI is little, the number of the E-DPDCH channel that then can transmit will be very big.

In step 804, UE is provided with E-TFI according to determined EUDCH data rate.

In step 806, consider the number of determined data rate and determined E-DPDCH channel and the number of DPDCH channel, UE is according to table 3 and table 4, or table 5 and table 6, determines to be applied to the OVSF code and the I/Q channel of E-DPDCH channel.

For example, if the number of the DPDCH channel that will be transmitted in the hypothesis current TTI is 1, the number of E-DPDCH channel is 3, and has set up HS-DPCCH, then should use code (I, SF as can be seen from Table 3 _DPDCH, SF _DPDCH/ 4) transmission DPDCH, and should use (Q, 4,1), (I, 4,3) and (Q, 4,3) transmission E-DPDCH.

As another example, if the number of the DPDCH channel that will be transmitted in the hypothesis current TTI is 1, the number of E-DPDCH channel is 3, and does not set up a HS-DPCCH, then should use code (I, SF as can be seen from Table 5 _DPDCH, SF _DPDCH/ 4) transmission DPDCH, and should use (Q, 4,1), (Q, 4,3) and (I, 4,3) transmission E-DPDCH.As another example, if the number of the DPDCH channel that will be transmitted in the hypothesis current TTI is 1, the number of E-DPDCH channel is 3, and set up HS-DPCCH, then should distribute (Q, 4 to E-DPDCH as can be seen from Table 6,3), (I, 4,3) and (Q, 4,2), this is because HS-DPCCH has used code (Q, 256,64).

In step 808, UE transmit uplink physical channel is such as DPDCH and E-DPDCH.As illustrated in fig. 10, these physical channels are being equal to mutually aspect frame length and the transmission time sequence.

Fig. 9 is a flow chart, and the reception operation of node B according to a second embodiment of the present invention has been described.

With reference to Fig. 9, in step 900, node B is stored in chip ground of chip of the uplink signal that is received in the current TTI (chip by chip) in the buffer.Simultaneously, node B separates mediation decoding to E-TFI and TFCI in step 902.By E-TFI and TFCI are deciphered, node B can obtain by the size of E-DPDCH and DPDCH data block transmitted and chnnel coding information.Different with situation illustrated in fig. 10, if E-TFCI, E-DPDCH and DPDCH are unequal mutually aspect transmission time sequence, then node B should postpone the E-DPDCH demodulation, until its complete TFCI information that receives DPDCH.In step 904 and 906, the DPDCH that node B determines among the TTI to be transmitted according to this information and the number of E-DPDCH channel.

In step 908, node B can be identified for OVSF code and the I/Q channel of the E-DPDCH of E-DPDCH according to the assignment of code rule, and wherein the assignment of code rule is that number and data-rate information according to DPDCH that is transmitted and E-DPDCH channel defines.

In step 910, node B carries out demodulation to the EUDCH data by the E-DPDCH Channel Transmission.

As mentioned above, the present invention proposes a kind of every TTI to E-DPDCH dynamically dispense needles to the OVSF code of DPDCH and HS-DPCCH, so that the method for higher data rate to be provided in the service of supporting EUDCH at UE.In addition, the present invention distributes the OVSF code and whether basis has transmitted HS-DPCCH, supports higher data speed thus.Therefore, UE can use available OVSF code as much as possible to be used for the EUDCH transfer of data, has improved the EUDCH data rate thus.

Although reference some preferred embodiment of the present invention describes the present invention and describes, but technical staff in the art will understand, under the situation that does not deviate from defined design of the present invention of claims and scope, can carry out many-sided modification to wherein form and details.

Claims (14)

1. different service method of support being shared identical ovsf (OVSF) code in mobile communication system by subscriber's installation (UE), this method comprises the following steps:

The maximum number of considering to be used for the quantity of second grouped data of serving and determining assignable channel;

Determine the number of the channel set up at first service different with second service; And

To redistributing the OVSF code of being set up at first service that channel distributed at the determined channel of second service, the grouped data of spread spectrum second service, and the grouped data of transmission institute spread spectrum.

2. according to the process of claim 1 wherein, described second service is the service of supporting to strengthen grouped data.

3. according to the process of claim 1 wherein, described first service is the service of supporting high speed downlink packet access, the perhaps service of support uplink grouped data.

4. according to the process of claim 1 wherein, described UE redistributes the OVSF code of distributing to the channel that is used to support high speed downlink packet access to being used to transmit the channel that strengthens grouped data, and transmission strengthens grouped data.

5. method according to claim 1, wherein, described UE redistributes the OVSF code to the channel that is used to transmit the enhancing grouped data by the reversed sequence of the OVSF code of distributing to the channel that is used for the support uplink grouped data, and transmission strengthens grouped data.

6. method according to claim 1, wherein, described UE sequentially redistributes the OVSF code except that the OVSF code of distributing to the channel that is used for the support uplink grouped data to the channel that is used to transmit the enhancing grouped data, and transmission strengthens grouped data.

7. one kind transmits the method that strengthens grouped data by subscriber's installation (EU) in mobile communication system, and this method comprises the following steps:

The maximum number of definite enhanced uplink Dedicated Physical Data Channel (E-DPDCH) that can transmit simultaneously;

Number that strengthens the needed ovsf of packet service (OVSF) code and the number of determined E-DPDCH are compared; And

If the number of E-DPDCH is bigger, then do not redistribute to E-DPDCH by opposite order do not transmit the OVSF code that is allocated in DPCH (DPDCH) that strengthens grouped data thereon in a certain transmission time.

8. according to the method for claim 7, wherein, the step of the described OVSF of redistributing code comprises:

Order by (Q, 4,3), (I, 4,2), (Q, 4,2) distributes the OVSF code, and described order is determined at E-DPDCH; And

If transmit E-DPDCH extraly, then the OVSF code of the order that is (I, 4,1), (Q, 4,1), (I, 4,3) at DPDCH is determined is redistributed to E-DPDCH by opposite order.

9. according to the method for claim 7, also comprise the steps: to node B transmission comprise the E-DPDCH that indication can be transmitted maximum number transport format information control channel and distribute the E-DPDCH of OVSF code by the reversed sequence of DPDCH to it.

10. one kind is passed through the method that node B supports to strengthen packet service in mobile communication system, and this method comprises the following steps:

Reception comprises the control channel of transport format information of the maximum number of the enhancing data channel (E-DPDCH) that indication can be transmitted, and E-DPDCH;

Whether the number of judging E-DPDCH is greater than the number of distributing to ovsf (OVSF) code that strengthens packet service; And

If the number of E-DPDCH is bigger, then use by (Q, 4,3), (I, 4,2), (Q, 4,2) the OVSF code that order distributed carries out demodulation to E-DPDCH, and by by with (I, 4,1), (Q, 4,1), (I, 4,3) order is distributed to the reversed sequence of the OVSF code of DPDCH and additionally E-DPDCH is carried out demodulation, receives thus to strengthen grouped data.

11. a method that strengthens packet service in mobile communication system by subscriber's installation (EU) support, this method comprises the following steps:

The maximum number of definite enhanced uplink Dedicated Physical Data Channel (E-DPDCH) that can be transmitted simultaneously;

Number that strengthens the needed ovsf of packet service (OVSF) code and the number of determined E-DPDCH are compared; And

If the number of E-DPDCH is bigger, then to E-DPDCH redistribute a certain transmission time transmission thereon strengthen grouped data the OVSF code of the DPCH of distributing to (DPDCH).

12. according to the method for claim 11, wherein, the step of the described OVSF of redistributing code comprises the following steps: the determined (I of a DPDCH, 4,1), (Q, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2), (Q, 4,2) the residue OVSF code among the OVSF code except that the OVSF code that is used for DPDCH is sequentially redistributed to E-DPDCH.

13. according to the method for claim 11, wherein, UE sequentially redistributes except that the OVSF code (I that serves at high-speed packet outside the determined OVSF code (Q, 4,1) to E-DPDCH, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2), (Q, 4,2).

14. a method of supporting to strengthen packet service in mobile communication system by node B, this method comprises the following steps:

Receive the control channel of the transport format information of the maximum number of indicating the enhancing data channel (E-DPDCH) that can transmit, and E-DPDCH;

Whether the number of judging E-DPDCH is greater than the number of distribute to ovsf (OVSF) code that strengthens packet service; And

If the number of E-DPDCH is bigger, then use determined (I, 4 at DPDCH, 1), (Q, 4,1), (I, 4,3), (Q, 4,3), (I, 4,2), (Q, 4,2) the residue OVSF code among the OVSF code except that the OVSF code that is used for DPDCH sequentially carries out demodulation to E-DPDCH, receives thus to strengthen grouped data.

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