TW201511514A - Method and apparatus for multiple carrier utilization in wireless communications - Google Patents

Abstract

Method and an apparatus for multiple carrier utilization in wireless communications are disclosed. These methods include multiple carrier activation/deactivation, multiple carrier discontinuous transmission (DTX) and discontinuous reception (DRX) activation/deactivation and operations, and multiple carrier acknowledgment/negative acknowledgement feedback. The methods include provisions for joint multiple carrier activation and deactivation and joint DTX and DRX activation and deactivation for multiple carriers.

Description

Multi-carrier utilization method and device in Wu line communication

The invention relates to wireless communications.

Wireless communication systems are evolving to meet the need to provide continuous and faster access to data networks. This evolution is driven by the desire that mobile users can connect to other users or information networks from any location, at any time, for business, leisure or other purposes. To meet these needs, wireless communication systems can use multiple carriers to transmit data. A wireless communication system that transmits data using multiple carriers can be referred to as a multi-carrier system. In both cellular and non-cellular wireless systems, the use of multiple carriers is expanding. Depending on how many carriers are available, the multi-carrier system can increase the available bandwidth in the wireless communication system. For example, a dual carrier system can double the bandwidth of a single carrier system, and a three carrier system can triple the bandwidth of a single carrier system. In addition to the throughput gain, diversity and joint scheduling gains are also expected. This processing can improve quality of service (QoS) for end users. Furthermore, the use of multiple carriers can be used in conjunction with Multiple Input Multiple Output (MIMO).

For example, in the context of the 3rd Generation Partnership Project (3GPP) system, a new feature called Dual High Speed Downlink Packet Access (DC-HSDPA) was introduced in 3GPP Specification Release 8. In DC-HSDPA, the same geographical area is covered by up to two HSDPA carriers, which Some carriers are in the same band and are likely to be adjacent. In the DC-HSDPA system, frequency diversity is used between carriers in the same band, and system performance will increase. For DC-HSDPA, the base station (which can also be referred to as a Node B, access point, site controller, etc. in other variants or types of communication networks) is simultaneously transmitted over the two downlink carriers. / Receiver unit (WTRU) communication. Not only does this double the bandwidth and peak data rates available to the WTRU, but it also improves fast network efficiency with fast scheduling and fast channel feedback on both channels.

Methods and apparatus for utilizing multiple carriers in wireless communications are disclosed. These methods include multi-carrier start/deactivation, multi-carrier discontinuous transmission (DTX) and discontinuous reception (DRX) start/deactivation and operation, and multi-carrier acknowledgment/negative acknowledgment feedback. The method includes preparing for joint multi-carrier initiation and deactivation and joint DTX and DRX start and deactivation for multiple carriers. A method for enabling/disabling multiple carriers includes receiving an activation/deactivation message, wherein the activation/deactivation message includes start/deactivate command information and carrier information. At least one of the plurality of carriers is determined from the start/stop message and the carrier is operated against the start/stop message.

UTRAN‧‧ terrestrial radio access network

WTRU‧‧‧A wireless transmission/reception unit

SRNC‧‧‧Service Radio Network Controller

CRNC‧‧‧Control Radio Network Controller

100‧‧‧Wireless communication system

160‧‧‧ Carrier

170‧‧‧ Carrier

219.229.818.821‧‧‧Antenna

260‧‧‧Upper chain carrier

270‧‧‧lower chain carrier

505.510.515.520‧‧‧ Status

001.000.011‧‧‧ Order

100.101.111‧‧‧ command set

△MC-ACK-NACK‧‧‧Scale factor

MME‧‧‧Action Management Entity

S-GW‧‧‧ service gateway

700‧‧‧Wireless communication system/access network

S1.X2‧‧ interface

E-UTRAN‧‧‧Evolved Universal Land Access Network

eNB‧‧‧Evolved Node B

A more detailed understanding can be obtained from the following description in conjunction with the accompanying drawings in which: FIG. 1 shows an example wireless communication system that uses multiple uplink carriers to handle uplink transmission; FIG. 2 is a first diagram Functional block diagram of an exemplary wireless transmit/receive unit (WTRU) and example node B in a wireless communication system; FIG. 3 is a functional block diagram showing two uplink carriers and two downlink carriers; Figure 4 is a functional block diagram showing two channels transmitted in a single downlink; Figure 5 is an example implementation of sequentially starting/deactivating carriers using a High Speed Shared Control Channel (HS-SCCH) command Mode; Figure 6 shows an example implementation using modulated signature overlay to transmit acknowledgment/negative acknowledgment (ACK/NACK) information; Figure 7 is a Long Term Evolution (LTE) wireless communication system/access network One embodiment of the ; and FIG. 8 is an example block diagram of a WTRU and a Node B of an LTE wireless communication system.

The term "WTRU" as referred to hereinafter includes, but is not limited to, a User Equipment (UE), a mobile station, a fixed or mobile subscriber unit, a pager, a mobile telephone, a personal digital assistant (PDA), a computer, or Any other type of device that can operate in a wireless environment. The term "Node B" as referred to hereinafter includes, but is not limited to, a base station, a site controller, an access point (AP), or any other type of peripheral device capable of operating in a wireless environment.

In general, the network may assign at least one downlink (DL) carrier and/or at least one uplink (UL) carrier as an anchor downlink carrier and an anchor uplink carrier, respectively. In multi-carrier operation, a WTRU may be configured to operate using two or more carriers, which are also referred to as frequencies. Each carrier can have different characteristics and is logically associated with the network and the WTRU, and the operating frequencies can be grouped and referred to as anchor or primary carriers as well as supplementary or secondary carriers. If more than two carriers are configured, the WTRU may include more than one primary carrier and/or more than one secondary carrier. For example, an anchor carrier can be defined as a carrier that carries a particular set of control information for downlink/uplink transmission. Any carrier that is not assigned as an anchor carrier can be a secondary carrier. Or, the network does not necessarily specify an anchor carrier. And the priority order, preference or preset state may not be provided for the downlink or uplink carrier. Hereinafter, for the sake of convenience, the terms "anchor carrier", "main carrier", "uplink carrier 1", "first carrier", "first uplink carrier", and "main uplink carrier" are here generic. Likewise, the terms "auxiliary carrier", "secondary carrier", "upper-chain carrier 2", "second carrier", "second uplink carrier", and "second uplink frequency" are also common here.

As part of a dual-cell high-speed packet access (DC-HSPA) that also includes dual-cell high-speed downlink packet access (DC-HSDPA) and dual-cell high-speed uplink packet access (DC-HSUPA), The following definitions/terms/hypotheses are introduced herein, and these definitions/terms/hypotheses may be used throughout the disclosure, but they do not limit the scope of the disclosure. First, the sectors are one or more cells that belong to the same base station and cover the same geographic area. Second, the two carriers have the same time reference and their downlinks are synchronized. Next, the term "anchor carrier" refers to a downlink frequency carrier associated with an uplink frequency carrier assigned to the WTRU, and the term "auxiliary carrier" refers to a downlink frequency carrier of a non-anchor carrier. An uplink "anchor" carrier refers to an uplink carrier associated with a downlink anchor carrier via explicit configuration or by implicit association via a particular uplink/downlink carrier spacing.

In some embodiments, multiple uplink and downlink carriers can be configured for the WTRU. The plurality of carriers may or may not be adjacent and may or may not be at the same frequency or radio band and/or frequency range. In one embodiment, the plurality of carriers may include, but are not limited to, any one of: four adjacent downlink carriers in the same band and one or two uplink carriers in the same band; Two pairs of two adjacent downlink carriers in two different bands, and two uplink carriers in each of the bands, or three adjacent downlink carriers in the same band, and are also in the same One or two (adjacent) uplink carriers of the band.

The term "anchored" carrier can refer to the lower chain of the downlink control channel. The wave, wherein the channel is, for example, but not limited to, a fractional dedicated physical channel (F-DPCH), an enhanced absolute grant channel (E-AGCH), and other channels, but is not limited thereto. Other physical channels, such as the Common Pilot Channel (CPICH), High Speed Shared Control Channel (HS-SCCH), and High Speed Entity Downlink Shared Channel (HS-PDSCH), can be read from any downlink carrier such as an auxiliary or secondary carrier. take. When more than one downlink carrier transmits a downlink control channel associated with one or more uplink carriers, the downlink "anchor" carrier may refer to a downlink carrier configured with "anchored" carrier characteristics. Alternatively, the term downlink "anchored" carrier may refer to a downlink carrier that carries a serving HS-DSCH cell. Alternatively, if a single downlink carrier is configured for the WTRU, then the carrier is the primary downlink carrier.

The following notes are available from start to finish. The terms DLn and ULn refer to the nth secondary service high speed downlink shared channel (HS-DSCH) cell (secondary DL carrier) and the nth secondary service enhanced dedicated channel (E-DCH) cell, respectively. (Secondary UL carrier), where n>0. The terms DL0 and UL0 refer to the primary serving HS-DSCH cell (primary DL carrier) and the primary serving E-DCH cell (primary UL carrier), respectively.

In some embodiments, the UL carrier can be paired with a DL carrier. On the other hand, the DL carriers may be unpaired (ie, the number of configured DL carriers may be greater than or equal to the configured number of UL carriers). In the case where the DL carrier is paired with the UL carrier, the UL/DL carrier pairing may require three different commands to cover the transition between the three possible states of the carrier pairing, where state 1 may refer to both the UL and DL carriers being Startup, state 2 may mean that both UL and DL carriers are disabled, state 3 may refer to DL carrier initiation and UL carrier deactivation.

In an alternate embodiment, the UL carrier is not necessarily enabled if the associated DL carrier is deactivated.

In the case where the DL carrier is unpaired (ie, the DL carrier has no associated UL carrier), two different commands are required to cover the transition between the two possible states, where state 1 is possible Refers to the DL carrier startup, and state 2 may refer to the DL carrier deactivation.

The embodiments disclosed herein may be used alone or in combination. Still further, the embodiments disclosed herein can be used in conjunction with U.S. Patent Application Serial No. 12/610,284, the entire entire entire content of Reference.

1 shows an example wireless communication system 100 in accordance with an example embodiment in which uplink transmissions are processed with multiple carriers 160 and downlink transmissions are processed with multiple carriers 170. The wireless communication system 100 includes a plurality of WTRUs 110, a Node B 120, a Control Radio Network Controller (CRNC) 130, a Serving Radio Network Controller (SRNC) 140, and a core network 150. Node B 120, CNRC 130, and SRNC 140 may be collectively referred to as a Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (UTRAN) 180.

As shown in FIG. 1, WTRU 110 is in communication with Node B 120, and Node B 120 is in communication with CRNC 130 and SRNC 140. Although three WTRUs 110, one Node B 120, one CRNC 130, and one SRNC 140 are shown in FIG. 1, it should be noted that any combination of wireless and wired devices can be included in the wireless communication system 100.

2 is a functional block diagram of the WTRU 210 and Node B 220 in the wireless communication system 100 of FIG. 1. As shown in FIG. 2, the WTRU 210 is in communication with the Node B 220, and both are configured to perform a method in which uplink transmissions from the WTRU 210 are transmitted to the Node B using a plurality of uplink carriers 260. 220. The downlink transmission from Node B 220 is transmitted to the WTRU 210 using a plurality of downlink carriers 270.

The WTRU 210 includes a processor 215, a receiver 216, a transmitter 217, a memory 218, an antenna 219, and other elements (not shown) that may be found in a typical WTRU. Antenna 219 may include multiple antenna elements or multiple antennas that may be included in WTRU 210. Memory 218 It is provided to store software such as operating systems and applications. Processor 215 is provided to perform a method for implementing multi-carrier operation, either alone or in combination with software and/or one or more other components. Receiver 216 and transmitter 217 are in communication with processor 215. The receiver 216 and transmitter 217 are capable of receiving and transmitting one or more carriers simultaneously. Alternatively, multiple receivers and/or multiple transmitters may be included in the WTRU 210. Antenna 219 is in communication with receiver 216 and transmitter 217 to facilitate transmission and reception of wireless data in a multi-carrier scheme.

Node B 220 includes a processor 225, a receiver 226, a transmitter 227, a memory 228, an antenna 229, and other components (not shown) that may be found in a typical base station or Node B. Antenna 229 may include multiple antenna elements or multiple antennas that may be included in Node B 220. The memory 228 is provided for storing software such as an operating system and an application. Processor 225 is provided to perform a method of implementing multi-carrier operation, either alone or in combination with software and/or one or more other components. Receiver 226 and transmitter 227 are in communication with processor 225. The receiver 226 and transmitter 227 are capable of receiving and transmitting one or more carriers simultaneously. Alternatively, multiple receivers and/or multiple transmitters may be included in Node B 220. Antenna 229 communicates with receiver 226 and transmitter 227 to facilitate transmission and reception of wireless data.

Embodiments disclosed herein provide several methods to perform multi-carrier initiation and deactivation, start and disable of multi-carrier discontinuous reception (DRX) and discontinuous transmission (DTX), multi-carrier DRX and DTX operations, and multiple Confirmation/negative acknowledgement feedback for carrier implementation. It should be noted that while certain embodiments may be disclosed herein in terms of a downlink (uplink) or DRX (DTX) scheme, it should be understood that the embodiments disclosed herein are applicable to uplink (lower chain) or DTX. (DRX) program.

It should also be noted that although the embodiments disclosed herein are described with reference to channels associated with 3GPP Releases 4 through 7, these embodiments are equally applicable to further 3GPP releases (and the channels used), such as LTE Release 8 , LTE-Advanced, and any other type Wireless communication system (and the channels it uses). Furthermore, it should be noted that the embodiments described herein can be applied in any order and combination.

Embodiments for dynamically enabling and deactivating a secondary carrier are disclosed herein. In particular, Figures 3 and 4 show an embodiment for performing multi-carrier operation. The channels used in Figures 3 and 4 show the operation of a particular channel, but it should be noted that any channel can be transmitted in these carriers. Referring now to Figure 3, in the illustrated wireless communication system, different carriers cover different geographic areas, and the WTRU may be in an area covered by certain HSDPA carriers configured for it, but the area is not otherwise configured for its HSDPA. Covered by the carrier. For example, in FIG. 3, Node B 300 and WTRU 305 may have communication coverage via downlink carrier 1 310 and uplink carrier 1 315 instead of downlink carrier 2 320 and uplink carrier 2 325. It should be noted that the embodiments disclosed herein can be applied to any multi-carrier system regardless of how many radios are included in the receiver/transmitter or transceiver.

An embodiment is disclosed herein in which the UTRAN can be configured to control the initiation and deactivation of the supplementary carrier using HS-SCCH commands. Referring to FIG. 4, the HS-SCCH order may be CH ₁ 420 transmitted by the downlink carrier 1 410 from the Node B 400 to the WTRU 405. In the first example, the HS-SCCH command controls the activation and deactivation of the supplementary carrier one by one. The HS-SCCH order can be configured to carry an indication of which carrier should be activated and deactivated in accordance with the command. In an alternate example, the HS-SCCH order may be reserved for use in starting and deactivating all of the supplementary carriers simultaneously.

The HS-SCCH command signal passing can use the command type bits marked x _odt,1 ,x _odt,2 ,x _{odt,3 and} the command bits marked x _ord,1 ,x _ord,2 ,x _ord,3 Yuan to implement.

In the first embodiment, the command type indicates a start/deactivate command, and the command bit indicates the carrier to which the command is applied. For example, if the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='010', then the command is used for the auxiliary carrier index indicated by x _ord,1 ,x _ord,2 ,x _ord,3 Start command. If the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='011', then the command is used to stop the auxiliary carrier index indicated by x _ord,1 ,x _ord,2 ,x _ord,3 Use the command. Other auxiliary carriers (not indexed with x _{ord, 1} , x _{ord, 2} , x _{ord, 3} ) are not affected by this command. This method allows signaling up to 8 auxiliary carriers, but it requires two command types. For graphical purposes, if the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='010' and the command bit x _ord,1 ,x _ord,2 ,x _ord,3 ='111 are received ', then the supplementary carrier associated with the supplementary carrier index 7 can be activated. Or, if the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='010', the command is used for the auxiliary carrier index indicated by x _ord,1 ,x _ord,2 ,x _ord,3 Deactivate command. If the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='011', then the command is used to start the auxiliary carrier index indicated by x _ord,1 ,x _ord,2 ,x _ord,3 command.

In the second embodiment, if the command type x _odt,1 ,x _odt,2 ,x _odt,3 = '010', dynamic switching or start/deactivation is performed. The command bits are then checked to determine the appropriate operation and auxiliary carrier. If the command bit x _{ord, 1} =1, the auxiliary carrier 1 is activated, and if the command bit x _{ord, 1} =0, the supplementary carrier 1 is deactivated. If the command bit x _{ord, 2} =1, the secondary carrier 2 is activated, and if the command bit x _{ord, 2} =0, the secondary carrier 2 is deactivated. If the command bit x _{ord, 3} =1, the auxiliary carrier 3 is activated, and if the command bit x _{ord, 3} =0, the supplementary carrier 3 is deactivated. This embodiment uses a single command type and can simultaneously activate and deactivate up to three secondary carriers.

In another embodiment, the UTRAN transmits an explicit signal for simultaneously activating or deactivating a group of carriers. For example, any of the following methods, or a combination thereof, can be used to form a set of carriers. In a grouping method, a group may be composed of all auxiliary carriers (for uplink, downlink, or both) in a specified frequency band, wherein the association between the frequency band and the explicit message may be pre-configured. It can also be implied based on the frequency band in which the explicit message is transmitted. In another grouping method, a group can consist of all auxiliary carriers (uplink, downlink, or both). In another grouping method, a group may consist of all downlink-assisted carriers associated with a given downlink-anchor carrier (whether or not in the same frequency band). In another grouping method, the group can be specified by a specific frequency All carriers (uplink, downlink, or both) in the segment (ie, deactivating or starting the reception of a particular band). Furthermore, in another grouping method, a group may consist of a downlink, an uplink, or all non-anchor carriers in the two. In another grouping method, a group may be composed of all carriers that are part of a carrier group, wherein the carrier group is a predetermined list of downlinks and/or uplinks, and a list of downlink and/or uplink carriers within the group is It may be pre-configured via Radio Resource Controller (RRC) messaging when the radio bearer is established/reconfigured, or pre-configured on the WTRU. In another grouping method, the group may be composed of all carriers that are part of a carrier group, which may be defined as all carriers that are assigned the same Radio Network Temporary Identification Number (RNTI) for the WTRU, such as high speed. Downlink shared channel (HS-DSCH)-RNTI (H-RNTI), but it is not limited thereto. The example grouping methods disclosed herein are applicable to all of the embodiments described herein.

Embodiments of explicit messaging will be generally disclosed and described in greater detail below. In one embodiment, an explicit signal for simultaneously enabling or deactivating a group of carriers may include a new High Speed Shared Control Channel (HS-SCCH) command for initiating and deactivating the secondary service HS-DSCH The existing commands of the cell are different. In another embodiment, the explicit signal may be an existing command for initiating and deactivating the secondary serving HS-DSCH cell, where, for example, when configuring the WTRU to perform multi-carrier operation, the command will be Reinterpreted, thereby not only indicating the initiation and deactivation of secondary service HS-DSCH cells, but also initiating and deactivating a set of carriers (e.g., all supplementary services HS-DSCH cell carriers). This example command can be applied to those carriers that are considered "auxiliary" in their respective bands. For example, the start/deactivate command cannot be applied to those downlink (DL) carriers that are used as anchor carriers in the specified band.

In another embodiment, the explicit signal may be an L2 or L3 explicit message for simultaneously enabling or deactivating a group of carriers.

For the explicit implementations disclosed herein, explicit messages can be applied to the delivery The carrier in the band of the message.

For the explicit implementations disclosed herein, explicit messages can be applied to the secondary carriers associated with the same anchor carrier.

Details of various secondary carrier activation/deactivation methods implemented on a per carrier basis or on a single or each paired carrier (which may be pre-defined, pre-specified or pre-configured) will be described below. Multiple HS-SCCH commands can be used to simultaneously enable/deactivate multiple carriers.

In one embodiment, existing command types for indicating secondary carrier activation/deactivation are reused in conjunction with various command mapping methods to provide start/deactivate commands and targets to which the start/deactivate command is directed. Carrier (or target paired carrier). For DC-HSPA, for existing command types x _{odt, 1} , x _{odt , 2} , x _{odt , 3} = '001 ', three bit commands (x _ord,1 ,x _ord,2 ,x _ord,3 ) UL and DL start and deactivation for the first secondary carrier. In the present embodiment, various command mapping methods are used in combination with the process of reusing the existing command type (xodt, 1, xodt, 2, xodt, 3) = '001', so as to separately be the MC- with multiple secondary carriers. HSPA starts/deactivates the target secondary carrier.

In the first method, a single UL carrier is configured. When configuring a single UL carrier, a three-bit command can be used to support the activation/deactivation of the secondary carrier in an MC-HSDPA system with up to four DL carriers. A binary command bit may be used herein to indicate the activation or deactivation of each secondary DL carrier (command bits "1" and "0" may indicate activation and deactivation or deactivation and activation, respectively). The remaining command bits may then indicate the index of the target secondary DL carrier to which the command applies, so for three secondary DL carriers, only three command bits are required for a separate start/deactivation. The method can be applied to an MC-HSDPA system with up to K DL carriers. For (K-1) secondary DL carriers, a separate start/deactivation may require N command bits, where N is an integer and satisfies N [1+log ₂ (K-1)]. The mapping between command bits and carriers can be indicated in any command. In one example, different HS-SCCH commands may be sent separately to enable and deactivate each of the downlink carriers in the manner of the Table 1 example, where Table 1 represents for configuring four DL carriers. The HS-SCCH command to start/deactivate the secondary carrier in MC-HSDPA. It should be understood that the actual command-bit mapping can take a different form than that shown in Table 1. It should also be understood that this concept is also applicable when the DL carrier is less than four. In this case, the command associated with the initiation and deactivation of the unconfigured carrier will become "reserved." This process can be applied to all of the embodiments discussed herein. The actual command-bit mapping as shown below can be applied on a per carrier basis or per group basis.

In the second method, a plurality of UL carriers are configured. The following set of embodiments is directed to the case where two UL carriers are configured, and the existing three bits x _ord,1 ,x _ord,2 and x _ord,3 can be reinterpreted to implement the auxiliary carrier activation/ Disabled. It should be noted that these embodiments can also be used when a single UL carrier is configured.

An example implementation is shown in Table 2 below, where each HS-SCCH order can initiate/deactivate a single DL carrier or a paired DL/UL carrier, which can be indicated by one command bit, while the remaining commands can Indicates a start/deactivate command for the target carrier or target paired carrier. If x _{ord, 1} =0, then the command is a start/deactivate command for pairing DL1/UL1 carriers. If x _{ord, 1} =1, then the command is a start/deactivate command for a single DL carrier (ie DL2 or DL3). In other words, in order to initiate or deactivate multiple downlink carriers, the Node B can send multiple HS-SCCH commands. It should be understood that the actual command-bit mapping may take a different form than that shown in Figure 2, which shows an example HS-SCCH for enabling/deactivating secondary carriers in MC-HSPA. command.

In another example embodiment, as shown in Table 3, pre-defined downlink carriers such as DL2 and DL3 may be simultaneously enabled or disabled with a single HS-SCCH order. In this example, the bit x _{ord, 2 is} used to indicate the activation or deactivation of DL2, x _{ord, and the 3-} bit is used to indicate the activation or deactivation of DL3. It should be understood that the actual command-bit mapping may take a form other than that shown in Table 3, which shows an example HS-SCCH order for starting/deactivating secondary carriers in MC-HSPA.

Another set of implementations can be used when up to four carriers are configured in the UL. It should be noted that these embodiments are also applicable when a single UL carrier is configured.

As part of one of the embodiments, the activation/deactivation of the second and third secondary carrier pairings (ie, DL2/UL2 and DL3/UL3) can be signaled together. For example, the HS-SCCH commands "111", "101", and "100" may be used to simultaneously activate/deactivate the UL and DL of the second and third secondary carriers. An example embodiment is shown in Table 4, where Table 4 shows an example HS-SCCH order for initiating/deactivating secondary carriers in MC-HSPA. In this embodiment, if x _{ord, 1} =0, the version 9 DC-HSUPA command mapping can be applied to the first secondary carrier. If x _{ord, 1} =1, the version 9 DC-HSUPA command map can be applied to both the second and third secondary carriers. In the case where the DC-HSUPA of the backward compatible version 9 is not considered, this embodiment can be applied to the other two combinations, that is, simultaneously signaling the first and second secondary carriers or simultaneously signaling the first and the Three carriers.

In an alternative embodiment for 4 DL and 4 DL carrier activation/deactivation, UL/DL carrier pairing is a single start/deactivation command for UL and DL second carriers and/or for UL and A single start/deactivate command for the DL third carrier is simultaneously enabled/disabled for the second and second secondary carriers.

In one embodiment, the number of HS-SCCHs that may be used to transmit a command implicitly indicates which carrier or group of carriers is targeted. In an illustrative embodiment, if (HS-SCCH number) modulo 2 = 0, the target of the HS-SCCH order is only the first secondary carrier: 011 means that the first secondary UL and DL are simultaneously activated; 001 means Starting the first secondary DL and deactivating the secondary UL; 000 means deactivating the first secondary UL and DL. If (HS-SCCH number) modulo 2 = 1, the target of the HS-SCCH order is the second and third carriers: 011 means to start the second secondary UL and DL; 001 means to start the second secondary DL and stop Using secondary UL;000 means deactivating the second secondary UL and DL; 111 means starting the third UL and DL; 101 means starting the third secondary DL and deactivating the secondary UL; and 100 means deactivating the third secondary UL and DL.

Alternatively, if (HS-SCCH number) modulo 2 = 0, the target of the HS-SCCH order may be the second secondary carrier. If (HS-SCCH number) modulo 2 = 1, the target of the HS-SCCH order may be the first and third carriers. In another variation, if (HS-SCCH number) modulo 2 = 0, the target of the HS-SCCH order may also be the third secondary carrier. If (HS-SCCH number) modulo 2 = 1, the target of the HS-SCCH order may be the first and second carriers. As shown in the above examples, these commands will be applied to these target carriers accordingly.

In another example embodiment, if (HS-SCCH number) modulo 2 = 0, the target of the HS-SCCH order may be the first and second secondary carriers: 011 means that the first secondary UL and DL are activated; 001 means starting the first secondary DL and deactivating the secondary UL; 000 means deactivating the first secondary DL and DL; 111 means starting the second secondary UL and DL; 101 means starting the second secondary DL And deactivating the secondary UL; 100 means deactivating the second secondary UL and DL. If (HS-SCCH number) modulo 2 = 1, then the target of the HS-SCCH order may be the third secondary carrier - 011 means that the third secondary UL and DL are activated; 001 means that the third secondary DL is started and Deactivating the second UL;000 means deactivating the third secondary UL and DL.

In another embodiment, if (HS-SCCH number) modulo 2 = 0, then the target of the HS-SCCH order may be the second and third secondary carriers. If (HS-SCCH number) modulo 2 = 1, the target of the HS-SCCH order may be the first carrier. Alternatively, if (HS-SCCH number) modulo 2 = 0, then the target of the HS-SCCH order may be the first and third secondary carriers. If (HS-SCCH number) modulo 2 = 1, the target of the HS-SCCH order may be the second carrier. As shown in the example above, these commands will be applied to these target carriers accordingly.

In another illustrative embodiment, if (HS-SCCH) modulo 2 = 0, then the target of the HS-SCCH order may be all carriers in the configured first frequency band. Similarly, if (HS-SCCH number) modulo 2 = 1, then the target of the HS-SCCH order may be all carriers in the configured secondary frequency band.

In another embodiment, the carrier or group of carriers for which the deactivation process is directed may be determined based on which carrier is transmitted on the HS-SCCH order. In other words, the disable command can be transmitted on the carrier to be deactivated. On the other hand, the start command can be sent on any active carrier. One example implementation is shown in Table 5, where DLrx and ULrx correspond to UL and DL carriers associated with a DL carrier receiving an HS-SCCH order. Table 5 shows an HS-SCCH order for starting/deactivating secondary carriers in MC-HSPA.

Alternatively, "100" can be used to disable all carriers simultaneously.

In another embodiment, the carrier or group of carriers for which the deactivation process is directed may be determined based on which frequency band the HS-SCCH order is transmitted. In one example, a disable command for all carriers in a specified frequency band may be sent on any carrier of the frequency band to be deactivated. On the other hand, the start command can also be sent on any active carrier.

Disclosed herein are implementations that introduce new command types to support the initiation/deactivation of secondary carriers. In one embodiment, the number of available HS-SCCH commands can be increased using additional command types. Doing so allows for the addition of more HS-SCCH commands, and these commands can be used to start and deactivate secondary UL and DL carriers. In the example implementation shown in Table 6 below, the command type x _odt,1 ,x _odt,2 ,x _odt,3 = '001' can be used to send commands to enable and disable secondary DL1, DL2, UL1, and UL2. In addition, a new command type x _odt,1 ,x _odt,2 ,x _odt,3 ='010' is introduced to enable and disable DL3 and UL3. Table 6 shows the HS-SCCH order for starting/deactivating secondary carriers in MC-HSPA.

In another embodiment, the type of command sent as part of the HS-SCCH order can be used to distinguish between carriers. In 3GPP Release 9, the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='000' can be used to signal commands related to DTX, DRX, and HS-SCCH-less operations, while command types x _odt,1 ,x _odt,2 ,x _odt,3 ='001' can be used to specify start/deactivate DL1 and UL1. As part of this embodiment, a new command type can be defined here to initiate and deactivate each additional DL carrier (possibly the corresponding UL carrier). For example, when signaling DL2 and UL2 to start/deactivate, you can use x _odt,1 ,x _odt,2 ,x _odt,3 ='010', and x _odt,1 ,x _odt,2 , x _{odt, 3} = '011' can be used to signal start/deactivate DL3 and UL3. It should be understood that any other available command types can be used to signal the activation/deactivation of a particular DL and UL pair. The existing command bits x _ord,1 ,x _ord,2 ,x _ord,3 currently defined for 3GPP Release 9 can be reused for each DL and UL pairing. These carrier pairs can then be distinguished by command type.

In an alternate embodiment, in an MC-HSPA system with 4 DL and 4 UL carriers, the number of bits of the HS-SCCH command field is increased to enable/deactivate secondary carriers. For one or more command bits added (for example, x _{ord, 4} ), these bits can be derived from the transport block size information (x _tbspb,1 , x _tbspb,2 ..., x _tbspb,6 ) Any of the six bits of the bit and/or the 1-bit new data indicator (x _{nd, 1} ) field. It should be understood that after increasing the length of the command and/or command type by any of the methods described herein, various start/deactivate command mapping schemes having a three-bit command type and a three-bit command are possible. in use.

In an alternate embodiment, one or both of the HS-SCCH command type bits may be reinterpreted as HS-SCCH command bits. For example, x _{odt, 1} bit is interpreted as x _{ord, 4} , providing more HS-SCCH commands.

In an alternate embodiment, a new HS-SCCH type of type 4 may be introduced to configure the HS-SCCH order when the WTRU is configured in multi-carrier mode. The WTRU configuration can be signaled from a higher layer. HS-SCCH Type 4 can be constructed to provide sufficient command bits to enable/deactivate secondary carriers in the MC-HSPA system.

In an alternate embodiment, a single HS-SCCH command set is used in sequence (or a combination of sets) to enable/disable DL and/or UL carriers. An example is shown here with respect to Figure 5, where state 505 includes active carriers DL0 and UL0, and in state 510, command "001" further initiates DL1. In addition, new command sets "101", "111", and "100" may be introduced in states 515 and 520 to enable/deactivate carriers DL2, UL2, DL3, and UL3, respectively. It should be noted that in this example, the commands "001", "011", and "000" in the existing 3GPP Release 9 can be used to start DL1 and UL1. Alternatively, "000" can be used in any state to return to the base state 505, in which all secondary carriers are deactivated.

What will now be disclosed is a secondary carrier start/stop method based on group implementation. In another embodiment, it is proposed to define a secondary carrier group to apply a single start/deactivate command to the entire carrier group. This grouping can be determined using any one of the packet methods disclosed above or a combination thereof.

In these methods, the UTRAN can transmit an explicit signal for simultaneously activating or deactivating a carrier group in order to reduce the control traffic load. The communication mechanism defined above for single carrier activation/deactivation can also be applied to the start/stop method of the carrier group.

In one example method, a new HS-SCCH order type such as (x _{odt, 1} , x _{odt, 2} , x _{odt, 3} ) may be used to signal the WTRU to apply an enable/disable command to a particular carrier group. In this example, the command type "010" is used to signal to the WTRU that the start/deactivate command can be used for all carriers defined in Group Downlink 1 (GDL1) and/or Group Uplink 1 (GUL1). Table 7 shows an example implementation of group-wise start/deactivation using a new HS-SCCH order type for 4 DL+2 UL carriers.

In another example method, a group command can be used to deactivate a carrier, and activation of one or more carriers can be accomplished by a single command or on a per carrier basis as disclosed above. For example, the range of existing command type "001" with command bit "000" may be a command for all configured carriers. Likewise, the process by which Node B transmits the command can be used to signal that all activated DL and UL carriers are deactivated.

In another embodiment, a single HS-SCCH order can be used to simultaneously initiate and/or deactivate any of the configured secondary UL and DL carriers. For each HS-SCCH order represented by the command type combined with the command bit, these commands indicate a status for all configured secondary UL and DL carriers, and the mapping between commands and states can In any order. In the case where different carrier configurations (eg, 4 DL+1 UL, 4 DL+2 UL, 4 DL+3 UL, and 4 DL+4 UL) are given, the generated boot/ The total number of disabled carrier states is 8, 12, 18, and 27, respectively. This means that four DL+1 UL carriers can be represented by a three-bit command, while a command with more than three bits supports a configuration with multiple UL carriers (for example, four DL+2) DL, 4 DL + 3 UL, and 4 DL + 4 UL, but it is not limited to this). It should be noted that the above embodiment assumes that only the secondary carrier can be activated/deactivated by the HS-SCCH order. However, start/deactivate all at the same time The processing of the configured carrier can also be applied to the case of starting/deactivating the primary DL/UL carrier.

In the configuration of a single UL carrier, since the three-bit command (x _ord,1 ,x _ord,2 ,x _ord,3 ) can be obtained from the currently specified HS-SCCH command, the existing command type (x _{odt, 1} , x _{odt, 2} , x _{odt, 3} ) = “001” and a three-bit command can be used to start/deactivate the secondary carrier. An example is shown in Table 8, in which different HS-SCCH commands can be used to explicitly indicate which carriers can be enabled and/or which carriers can be deactivated. An advantage of this embodiment over the prior embodiments of Table 1 is that a single command can be used to simultaneously activate/deactivate multiple carriers. It should be understood that the actual command-bit mapping can take a different form than that shown in FIG. It should also be understood that the actual combination of carrier configurations defined for each command may take a different form.

In the multi-UL carrier configuration example, the existing command type and three-bit command are not necessarily sufficient to map the resulting start/deactivate carrier state. This situation can be overcome using one of the following methods or a combination thereof.

In the first method, a new command type is defined for MC-HSPA. The current HS-SCCH command entity channel has a three-bit command type (x _odt,1 ,x _odt,2 ,x _odt,3 ), which can represent eight command types. In version 9 of DC-HSUPA, the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='000' and the command type x _odt,1 ,x _odt,2 ,x _odt,3 = are used. Part of '001'. A new command type is defined such that more commands are available in the MC-HSPA with more than one configured UL carrier to map all generated start/deactivate carrier states.

For example, to support 4 DL and 4 UL carriers, it is necessary to combine the command type and command bits to control the 27 carrier configuration states generated. The three-bit command type (x _odt,1 ,x _odt,2 ,x _odt,3 ) provides seven command types, which can be combined with three-bit commands (x _ord,1 ,x _ord,2 ,x _ord,3 ) Combine to create enough commands. Table 9 shows an example of a mapping between a reserved (available) command and all generated carrier configurations of an MC-HSPA system with 4 DL and 4 UL carriers. It should be understood that the actual command-bit mapping can take a different form than that shown in Table 9. It should also be understood that the actual carrier combinations defined for each command may take different forms.

In the second method, the length of the command can be increased. This processing can be implemented by reinterpreting the command type as a command bit. Doing so increases the length of the command bit from three bits to six bits (three bits from the command type plus three bits from the command). This can fully support 4 DL+4 UL carriers. Depending on whether the backward-compatible version 9 DC-HSUPA, the command type x _odt,1 ,x _odt,2 ,x _odt,3 ='000' combined with the three-bit command can be used or not used to start and deactivate The secondary carrier of the MC-HSPA. As previously indicated, these commands were used in the past to enable/disable DTX, DRX, and HS-SCCH-less operations, as well as for HS-DSCH service cell changes in Release 9.

In an alternative method, the retained new data indicator is combined with a portion of the transport block size information and can be reinterpreted as a command type and/or command. Since no HS-PDSCH is associated with the HS-SCCH order, a portion of the six-bit transport block size information (x _tbspb,1 , x _tbspb,2 ,..., x _tbspb,6 ) is used or _{reinterpreted} and/or A 1-bit new data indicator (x _nd,1 ) can increase the length of the command. For example, (x _tbspb,5 , x _tbspb,6 ) and x _nd,1 can be used to increase the length of the HS-SCCH Type 1 command. For example, if x _nd,1 is used, x _nd,1 can be set to x _ord,4 for HS-SCCH order (HS-SCCH type 1). As another example, if (x _{tbspb, 4} , x _{tbspb, 5} , x _{tbspb, 6} ) is used, then the HS-SCCH order (HS-SCCH type 3) can be: x _tbspb,1 , x _tbspb,2 ,... , x _tbspb,6 , and can be set to '1,1,1,x _ord,4 ,x _ord,5 ,x _ord,6' . It should be understood that the reinterpreted bits can be mapped to any of the command types or commands.

In an alternate embodiment, when configuring the WTRU for multi-carrier operation or multi-carrier (MC) mode, a new HS-SCCH type of type 4 may be introduced to transmit the HS-SCCH order. This MC mode state can be explicitly signaled from a higher layer (e.g., via RRC communication). The HS-SCCH Type 4 can be configured to provide sufficient command bits to enable/deactivate secondary carriers in the MC-HSPA system.

Disclosed herein is a method of signaling multiple HS-SCCH commands for MC-HSPA. Since the HS-SCCH order can be transmitted on any carrier, it is possible for multiple serving cells to signal multiple HS-SCCH commands for each based on MC-HSPA with, for example, 4 DL and 4 UL carriers. A carrier (either a single or pre-paired carrier, where the carrier can be pre-defined, pre-defined or pre-configured) or a group based to enable/deactivate secondary carriers. Different commands can have different command types and sequences. The method can be applied to MC-HSPA with more carriers than 4 DL and 4 UL at the expense of controlling the traffic load.

In another embodiment, the UTRAN transmits an explicit L1 signal to either activate or deactivate each carrier or initiate a separate start for each carrier.

In a first method, the L1 signal includes an HS-SCCH order that can transmit start/deactivate commands for multiple carriers. For example, the process can be implemented by mapping some or all of the bits in the HS-SCCH order type bits to a designated carrier. This mapping can be configured either by the network or implicitly. Alternatively, this HS-SCCH order may only transmit a single start/deactivate command combined with the target carrier address. For example, the process can be implemented by the following processing: One of the four carriers is indicated by retaining two of the HS-SCCH order types, and the carrier is initiated or deactivated by leaving other bits.

In the second method, the L1 signal includes an Enhanced Dedicated Channel (E-DCH) Absolute Grant Channel (E-AGCH), wherein the bit field of the channel is reinterpreted as signaling to simultaneously activate/deactivate multiple Carrier. In the third method, the L2 and L3 messages are used to transmit start and disable explicit commands.

In another embodiment, the initiation or deactivation of a carrier is triggered by an implicit rule on the WTRU. The trigger can be based on any of the following parameters or a combination of parameters. For example, the parameter can be a buffered state such as a total E-DCH buffer status (TEBS). It can also be the transport block size received in the anchor cell, the power headroom indicated in the Scheduling Information (SI), or the Received Signal Code Power (RSCP), Received Signal Strength Indicator (RSSI) or other Similar to the measured signal power indicated or indicated.

The network can configure different thresholds for these triggers for startup and deactivation. Once carrier activation or deactivation is triggered, the WTRU may perform any of the following steps, either alone or in any combination and order.

The WTRU may use L1, L2, or L3 to deliver a carrier enable or disable indication message to the network. The WTRU may include measurements and/or causes of trigger carrier activation/deactivation as part of the indication message. In addition, the WTRU may also include an index of the carrier to be activated/deactivated as part of the indication message.

The WTRU may wait for an explicit start or disable command from the network. In one approach, if the indication is deactivated, the WTRU may spontaneously deactivate the carrier. In another method, if the indication is carrier initiated, the WTRU may initiate the carrier spontaneously.

Once the secondary carrier is deactivated, the channel quality indicator (CQI) feedback report for the secondary carrier can be stopped. Alternatively, the CQI feedback report can be transmitted at a lower rate. in In another alternative, the CQI feedback report can be transmitted at a slower rate and using L2 messaging, such as in the Media Access Channel (MAC) MAC-i header, or it can be used in L3 messaging instead of L1. High-speed dedicated entity control channel (HS-DPCCH) for transmission. Once the secondary carrier is activated, the CQI feedback can be resumed. These CQI activities apply to all of the embodiments disclosed herein.

When multiple carriers are configured for multi-carrier operation in the same frequency band, these carriers may be adjacent or non-adjacent. Adjacent carriers can be spaced by the bandwidth required by a particular technique. For example, in WCDMA FDD, each carrier can be separated by 5 MHz. Therefore, the carrier frequencies of adjacent carriers are separated by 5 MHz. Generally, when N adjacent carriers are configured, adjacent carriers will occupy an aggregated and continuous bandwidth of N times 5 MHz.

Due to hardware limitations, it is difficult for some WTRUs to simultaneously receive and successfully demodulate signals from non-adjacent carriers in the same frequency band. Hardware limitations may include limitations related to filtering these signals. For multi-carrier operation, when there are more than two carriers, it may be necessary to limit the carrier start/deactivate state of the WTRU in order to maintain or ensure a continuous start spectrum.

When the WTRU does not support having non-adjacent carriers within one frequency band, RRC may not allow non-adjacent carriers to be configured within the frequency band. Likewise, Node B is not necessarily configured or allowed to use HS-SCCH commands that may result in non-adjacent carriers from deactivation processing of one or more configured carriers.

The HS-SCCH command scheme described herein takes into account both non-adjacent and adjacent carriers. The method disclosed herein can also be used to initiate and deactivate multiple carriers without limiting the activation of only adjacent carriers. This processing can be accomplished by retaining any HS-SCCH commands that result in non-adjacent carriers (that is, these HS-SCCH commands may not be used or notified by Node B). For example, in the example of MC-HSDPA with 4 DL and 1 UL carrier, if no generality is lost, if 4 DL adjacent carriers are assumed to follow DL0, DL1, DL2 and The order of DL3 is contiguous to configure these carriers. Therefore, since DL3 can be started/deactivated only when it is assumed that DL0/UL0 is not deactivated, the command "0xx" in Table 1 can be retained here ("x" can be 0 or 1). Also, in the case of having the adjacent carrier restrictions described above, the method disclosed herein for designing HS-SCCH commands for carrier start/deactivation can also be used to further optimize the start/deactivation of carriers.

Still further, a method for describing WTRU behavior when receiving a configuration message that results in an unsupported carrier start/deactivation configuration is disclosed herein. In one example, the WTRU receives an HS-SCCH order that causes an invalid carrier start/deactivate configuration. Upon receiving an HS-SCCH order that causes an invalid carrier start/deactivate configuration, the WTRU may perform either or a combination of the following: the WTRU may ignore the HS-SCCH order and maintain its current configuration; the WTRU may ignore the HS- SCCH order, and disable all secondary carriers in bands with non-adjacent carriers; WTRU may HS-SCCH order on HS-DPCCH; WTRU may acknowledge HS-SCCH order on HS-DPCCH; WTRU may be on HS-DPCCH A negative acknowledgment is made to the HS-SCCH order; or the WTRU does not acknowledge or negatively acknowledge the HS-SCCH on the HS-DPCCH (DTX).

Embodiments for enabling/disabling DRX and DTX and for handling DRX and DTX operations are disclosed herein. A method for configuring a WTRU for DRX operation is described below. The WTRU can be configured by the network using L3 messaging.

In a first embodiment, the network configures the WTRU using a set of DRX parameters, and the WTRU implicitly applies these DRX parameters to all downlink carriers. In another embodiment, the network configures a set of DRX parameters on each frequency band and the WTRU applies the same parameters to all downlink carriers in the same band. In another embodiment, the network separately configures a set of DRX parameters for each carrier. In still further embodiments, the network configures a set of DRX parameters for each anchor carrier. In this embodiment, the DRX parameters for the supplementary carrier are used for The parameters of the associated anchor carrier are the same. In the embodiments disclosed herein, if the WTRU has more than one receive link, the network can configure a second set of parameters.

In another embodiment, the network configures a set of DRX parameters for each set of downlink carriers, wherein all carriers within the same group use the same DRX parameters. These groups can be pre-configured either by Radio Resource Control (RRC) messaging or pre-configured on the WTRU when establishing/reconfiguring a radio bearer. Alternatively, a set of downlink carriers can be defined here as all carriers that have assigned the same radio network temporary identification code to the WTRU. The previously disclosed grouping method can also be used to determine the appropriate group.

Embodiments related to the DRX state at initialization are disclosed herein. In one embodiment, DRX for all downlink carriers may be deactivated when configuring the downlink carrier. Alternatively, the network may pre-configure the DRX state, which may apply to all downlink carriers or a subset or group of these carriers. In another alternative, the network can configure the DRX state for each of the downlink carriers separately.

Embodiments for triggering DRX initiation and deactivation on a WTRU are disclosed herein. In one embodiment, the network may explicitly inform the WTRU to initiate or deactivate DRX. This start or stop message can be for a specific carrier or a group of carriers. In order to explicitly inform the DRX to start and deactivate, the network can initiate/disable alternate carrier activation/deactivation with DRX to use any of the carrier start and stop methods described above.

In another embodiment, the WTRU may implicitly initiate or deactivate DRX for a subset or group of carriers. For example, the activation or deactivation trigger can be based on any one of the following measurements or a combination thereof. A measurement can be a down-chain activity for a specified time period. Another measurement can be the downlink data rate for a given time period. Another measurement can be the reported CQI. Other measurements may also be radio power measurements such as Common Pilot Channel (CPICH) measurements, RSCP, RSSI, and the like. These measurements can be performed on one or several carriers and can be averaged.

The network may configure a threshold for entering DRX (DRX-in) and a threshold for leaving DRX (DRX-out) based on one or more of the above measurements. When DRX is not active and the actual measurement reaches the DRX-in threshold, the WTRU may apply DRX on the associated carrier or carrier group. Likewise, when DRX is initiated and the actual measurement reaches the DRX-out threshold, the WTRU may deactivate DRX on the associated carrier or carrier group.

To implicitly initiate and deactivate DRX, the WTRU may notify the network of a status change. Thus, when DRX is initiated, the WTRU may send a message to inform the network of a status change. The message may include any one or combination of the following: an associated carrier index or reference; a measurement that triggers a change in state; a cause of change; a start time; or a new state.

The WTRU activity associated with DRX operation at carrier startup is disclosed herein. Once the WTRU has initiated one or more carriers, the WTRU may perform any one of the following activities or a combination thereof. In one approach, the WTRU may restore the DRX state of the carrier to its state prior to deactivation. In another approach, the WTRU may configure the DRX state of the carrier to be in the same state as the anchor carrier. In another approach, the WTRU may configure the DRX state of the carrier to be the same state as the anchor carrier in the same frequency band. In another approach, the WTRU may configure the DRX state of the carrier to be the same state as the other carriers in the same frequency band. In another approach, the WTRU may configure the DRX state to be "active." In another approach, the WTRU may configure the DRX state to be "inactive." In another embodiment, the WTRU may deactivate DRX for all carriers. In another approach, the WTRU may deactivate DRX for all carriers in the same band as the newly activated carrier. In another approach, the WTRU may initiate DRX for all carriers. In a further approach, the WRTU may disable DRX for all carriers in the same frequency band as the newly activated carrier.

The WTRU activity associated with DRX operation at carrier deactivation is disclosed herein. Once the WTRU has deactivated one or more carriers, the WTRU may perform any of the following activities Or a combination thereof. In one approach, the WTUR can initiate DRX for all remaining active carriers or a set of remaining active carriers. For example, the WTRU interprets carrier deactivation as a low active state transition or into a low power mode. In another embodiment, the WTRU may deactivate DRX for all remaining active carriers or a group of remaining active carriers. For example, the WTRU may interpret carrier deactivation as saving power without changing traffic activity.

Embodiments for processing acknowledgement and negative acknowledgement (ACK/NACK) feedback in HSDPA in a multi-carrier environment are disclosed herein. In current systems, acknowledgment and negative acknowledgment (ACK/NACK) feedback in HSDPA or DC-HSDPA with Multiple Input Multiple Input (MIMO) may be included in the hybrid automatic repeat request (HARQ) HARQ-ACK field of the HS-DPCCH A predetermined signature is transmitted on the top. In this method, each possible combination of ACK/NACK/DTX events has a signature.

In one embodiment, the ACK/NACK information is transmitted using the modulation signature superposition shown in FIG. Each configured carrier can have a signature. The N signatures can be orthogonal. The ACK-NACK x input can take the values +1, -1, and 0 to represent ACK, NACK, and DTX, respectively. Alternatively, the values of ACK and NACK can be reversed. In another alternative, the values of ACK and NACK can be configured to different values instead of unit values. This configuration can also be signaled by the UTRAN.

The result from summing all the transmitted signatures can be scaled by a factor Δ _MC-ACK-NACK . This factor can be either predetermined or configured by the UTRAN. Alternatively, the scaling factor may depend on the number of ACK/NACKs transmitted. When multiple signatures are present at the same time, more power can be allocated for the ACK/NACK in order to compensate for the potential additional distortion introduced in the signal.

In an alternative embodiment, the value of the scaling factor Δ _MC-ACK-NACK may be determined by a predetermined rule and based on the number of non-zero ACK-NACK values Nnz transmitted. For example, for each additional non-zero ACK-NACK value transmitted, an additional Δnz (in dB) will be added to the scaling factor, where Δnz is signaled by UTRAN or is in specification Pre-configured.

In a second alternative embodiment, the lookup table that maps the scaling factor to a non-zero ACK-NACK number may be either predefined or signaled by the UTRAN.

Although the embodiments disclosed herein for multi-carrier enable/disable and operation are described in relation to Multi-Carrier High Speed Packet Access (HSPA) and High Speed Downlink Packet Access (HSDPA), these embodiments are equally applicable to these carriers. Systems other than configuration and other multi-carrier systems.

While the above is disclosed in relation to HSPA and HSDPA, it is equally applicable to any wireless environment. For example, Figure 7 shows a Long Term Evolution (LTE) wireless communication system/access network 700, where the network includes an Evolved Universal Terrestrial Access Network (E-UTRAN) 705. E-UTRAN 705 includes a WTRU 710 and a number of evolved Node Bs (eNBs) 720. The WTRU 710 is in communication with the eNB 720. The eNBs 720 are connected to each other using an X2 interface. Each eNB 720 is connected to a Mobility Management Entity (MME) / Serving Gateway (S-GW) 730 via an S1 interface. Although a single WTRU 710 and three eNBs 720 are shown in FIG. 7, it will be apparent that any combination of wireless and wired devices can be included in the wireless communication system access network 700.

8 is an example block diagram of an LTE wireless communication system 700 that includes a WTRU 710, an eNB 720, and an MME/S-GW 730. As shown in FIG. 8, WTRU 710, eNB 720, and MME/S-GW 730 are configured to enhance the security of the direct link communication.

In addition to the elements that may be found in a typical WTRU, the WTRU 710 includes a processor 816 with optional contiguous memory 822, at least one transceiver 814, an optional battery 820, and an antenna 818. The processor 816 is configured to enhance the security of the direct link communication. The transceiver 814 communicates with the processor 816 and the antenna 818 to facilitate the transmission of wireless communication. Lose and receive. If battery 820 is used in WTRU 710, the battery powers transceiver 814 and processor 816.

In addition to the elements that may be found in a typical eNB, the eNB 720 also includes a processor 817 having an optional linked memory 815, a transceiver 819, and an antenna 821. The processor 817 is configured to enhance direct link communication security. Transceiver 819 is in communication with processor 817 and antenna 821 to facilitate the transmission and reception of wireless communications. The eNB 720 is coupled to a Mobility Management Entity/Service Gateway (MME/S-GW) 730, which includes a processor with an optional contiguous memory 834 833.

Example

1. A method of using multiple carriers in conjunction with a radio in a High Speed Packet Access (HSPA) system, the method comprising: receiving a single HS-DSCH transmission channel, wherein a carrier associated with the HS-DSCH transmission channel is based on a subframe And dynamically changing; and processing a subset of the plurality of downlink control channels from the anchor carrier.

2. The method of embodiment 1, wherein the plurality of subsets of the plurality of downlink control channels control uplink transmissions.

3. The method of any preceding embodiment, wherein the plurality of downlink control channel subsets comprise a partially downlink physical channel (F-DPCH), an enhanced absolute grant channel (E-AGCH), and an enhanced relative grant channel (E- RGCH) and Enhanced HARQ Indicator Channel (E-HICH).

4. The method of any of the preceding embodiments, further comprising: performing a carrier change.

5. The method of any of the preceding embodiments, wherein the carrier change is in accordance with a predetermined field type or a field pattern signaled from a higher layer.

6. The method of any of the preceding embodiments, wherein every other sub-frame uses each carrier, or Each carrier is alternated for two consecutive sub-frames.

7. The method of any of the preceding embodiments, wherein the frequency of use of each carrier is not necessarily the same.

8. The method of any of the preceding embodiments, wherein the carrier change is performed at a different time.

9. A method as in any one of the preceding embodiments, wherein, unless the base station switches the carrier frequency for some of the channels of the anchor carrier, only a small number of sub-frames can be detected, thereby, for a plurality of specific subframes, Information that anchors the carrier channel will be lost.

10. The method of any of the preceding embodiments, wherein the carrier switching to the non-anchor carrier is performed at the HS-SCCH subframe boundary and the carrier is switched back at the end of the subsequent HS-PDSCH subframe.

11. The method of any of the preceding embodiments, wherein the carrier switching occurs at a boundary of the HS-PDSCH subframe.

12. The method of embodiment 11, wherein the first two slots of the HS-SCCH subframe in the HS-SCCH are received on the carrier before handover, and the last slot of the HS-SCCH is on the switched carrier Received such that there is a two-time slot offset between the HS-SCCH subframe and its corresponding PDSCH subframe.

13. A method as in any preceding embodiment, wherein a guard interval is included prior to each carrier switching event.

14. A method as in any of the preceding embodiments, wherein the guard interval allows a single carrier to be tuned and synchronized to the newly selected carrier.

15. The method of any of the preceding embodiments, wherein the control or profile message from the base station is not received during the guard interval.

16. The method of any of the preceding embodiments, wherein the guard interval has a duration of one radio slot.

17. A method as in any one of the preceding embodiments, wherein the WTRU is to use a specific cell-specific protection room Between configurations.

18. The method of any of the preceding embodiments, wherein the timing or behavior of the downlink control channel is modified to account for the guard interval.

19. The method of embodiment 18, wherein the timing and behavior of the E-HICH will be modified due to strict timing requirements.

20. The method of any one of embodiments 18-19, wherein the base station uses the higher power to transmit the E-HICH when the base station knows that the E-HICH will fall into the guard interval.

twenty one. The method of any one of embodiments 18 to 20, wherein the WTRU interprets the lost E-HICH as a NACK since the WTRU knows that the E-HICH is not expected in the guard interval and the WTRU performs the HARQ retransmission.

twenty two. The method of embodiment 21, wherein the additional HARQ retransmission is performed regardless of the number of HARQ maximum retransmissions allowed for the HARQ process.

twenty three. The method of any one of embodiments 18 to 20 wherein, in the guard interval, the WTRU does not perform transmission in a HARQ transmission known to have its corresponding E-HICH fall.

twenty four. The method of any of the preceding embodiments, further comprising: reporting a channel quality indicator (CQI) for all carriers.

25. The method of embodiment 24, wherein the CQI is reported for one carrier in each of the HS-DPCCH subframes.

26. The method of any one of embodiments 24 to 25, wherein the carrier in which the CQI is reported is a carrier being received by the WTRU according to a field type for the HS-PDSCH subframe, wherein the HS-PDSCH subframe is Received a few milliseconds later or before.

27. The method of any of the preceding embodiments, wherein the CPICH is measured in a subframe received on the respective carrier during the previous few microseconds to evaluate the CQI.

28. The method of any of the preceding embodiments, wherein the CQI is for each HS-DPCCH subframe More than one carrier reported.

29. The method of any of the preceding embodiments, wherein the WTRU does not use the E-DCH to perform the transmission during the subframe in which the corresponding E-AGCH, E-RGCH or E-HICH subframe is not received.

30. The method of any of the preceding embodiments, wherein the WTRU transmits the non-scheduled transmission on the E-DCH during a subframe in which the corresponding E-AGCH subframe is not received.

31. The method of embodiment 30, wherein the WTRU retransmits the MAC-e or MAC-I PDU when the E-HICH subframe is not received, as if the HARQ NACK was transmitted on the E-HICH.

32. The method of any of the preceding embodiments, wherein the WTRU transmits a DPCCH, an HS-DPCCH, an E-DPCCH, or an E-DPDCH if the F-DPCH is received in an earlier number of time slots.

33. The method of any of the preceding embodiments, wherein the MAC layer architecture is configured to use eight HARQ processes on all carriers and to allow HARQ retransmissions on different carriers.

34. A method for combining multiple carriers in a wireless transmit/receive unit (WTRU) with dual radios in a High Speed Packet Access (HSPA) system, the method comprising: receiving more than one HS-DSCH transmission channel, The carrier associated with the HS-DSCH transmission channel is dynamically changed on a subframe basis; and the subset of downlink control channels from the anchor carrier is processed.

35. The method of embodiment 34 wherein the subset of downlink control channels controls uplink transmission.

36. The method of any one of embodiments 34-35, wherein the subset of downlink control channels comprises a partially downlink physical channel (F-DPCH), an enhanced absolute grant channel (E-AGCH), and an enhanced relative grant channel ( E-RGCH) and Enhanced HARQ Indicator Channel (E-HICH).

37. The method of any one of embodiments 34 to 36, further comprising: continuously monitoring the F-DPCH, E-AGCH, E-RGCH, E-HICH from the anchor carrier.

38. The method of any one of embodiments 34 to 37, further comprising: transmitting according to Nc HS-DSCH The mapping between the transmission channel and the carrier frequency monitors the HS-SCCH and the HS-PDSCH on more than one (Nc) carriers.

39. The method of any one of embodiments 34 to 38 wherein the anchor carrier is a carrier frequency that conveys all downlink (DL) control channels.

40. The method of any one of embodiments 34-39 wherein one of the WTRUs is always tuned to the anchor carrier frequency to ensure proper reception of the control channel.

41. The method of any one of embodiments 34-40, wherein one of the WTRUs is tuned to any other frequency carrier at any given time to receive DL traffic on the HS-DSCH transmission channel.

42. The method of any one of embodiments 34 to 41, further comprising: receiving Nc carrier information from the base station, wherein the received information is used to configure at least CPICH information, H-RNTI, HS-SCCH, frequency information, and / or any other necessary parameters.

43. The method of embodiment 42, wherein the Nc carrier information is received while establishing a Radio Resource Control (RRC) connection or converting the WTRU to a CELL_DCH state.

44. The method of any one of embodiments 34 to 43 further comprising: performing a carrier change.

45. The method of any one of embodiments 34-44, wherein the carrier change is in accordance with a predetermined field type or a field pattern signaled from a higher layer.

46. The method of any one of embodiments 34-45, wherein at least one HS-DSCH is mapped to a carrier frequency of the anchor carrier.

47. The method of any one of embodiments 34 to 46 wherein the scheduling of carrier switching is controlled by the base station.

48. The method of embodiment 47, wherein the scheduling of the WTRU uses the HS-SCCH control of the anchor cell and signals the WTRU.

49. The method of any one of embodiments 47 to 48, wherein the HS-SCCH is included for explicit indication The number of carriers and the additional bits that provide the index to the carrier.

50. The method of any one of embodiments 47-49, wherein the WTRU receives carrier information using different H-RNTI implicit notifications and determines a carrier to monitor the HS-PDSCH.

51. The method of any one of embodiments 47 to 50 wherein the WTRU uses the HS-SCCH code number to receive carrier information.

52. The method of any one of embodiments 47-51, wherein the WTRU uses the HARQ process number, HARQ processing assigned to each carrier, and receives carrier information based on HARQ processing signaled on the HS-SCCH.

53. The method of any one of embodiments 47-52 wherein the WTRU monitors the HS-SCCH at the anchor cell and moves directly to the HS-PDSCH of the indicated carrier.

54. The method of any one of embodiments 34-53, wherein the HS-SCCH indicates the information x TTI or the time slot in advance to ensure correct reception of the data, wherein x can be equal to zero or predetermined or signaled by the network. Any value.

55. The method of any one of embodiments 34-54, wherein after receiving the HS-SCCH, if the network sets different timing requirements, the WTRU monitors the HS-PDSCH on a carrier Nc x time slot or TTI.

56. The method of embodiment 55, wherein the HS-SCCH portion 1 includes carrier information for explicit communication when the WTRU is able to directly switch to the new carrier.

57. The method of any one of embodiments 55-56 wherein the HS-SCCH portion 2 includes carrier information for explicit messaging when a delay is applied to the WTRU monitoring applicable HS-PDSCH code.

58. The method of any one of embodiments 34-57 wherein the WTRU is scheduled on the HS-PDSCH of the anchor cell and the HS-PDSCH of any other carrier.

59. The method of embodiment 58, wherein the WTRU is scheduled using two H-RNTIs, one of One H-RNTI is used to anchor cells and another H-RNTI is used for other carriers.

60. The method of embodiment 58, wherein the WTRU is scheduled using two sets of HS-SCCH codes.

61. The method of embodiment 58, wherein the WTRU is scheduled using two sets of HARQ processes.

62. The method of embodiment 58, wherein the WTRU is scheduled using two different HS-SCCH codes on two carriers in the same TTI when using explicit carrier signaling.

63. The method of any one of embodiments 34-62, further comprising: performing a slower dynamic switching controlled by the base station.

64. The method of embodiment 63 wherein the base station uses L1 or L2 messaging in the anchoring cell to control the slower handover.

65. The method of embodiment 63 wherein the base station controls slower handovers in any other cell monitored by the WTRU.

66. The method of any one of embodiments 63-65, wherein the base station uses the HS-SCCH order to indicate the carrier to which the WTRU should handover.

67. The method of any one of embodiments 34-66, further comprising: receiving a carrier switching command, wherein the carrier switching command and other information bits are used to indicate a carrier number that the WTRU should start monitoring with an available receiver.

68. The method of any one of embodiments 34 to 67, further comprising: switching to the indicated carrier after receiving the x time slots or TTIs after the command, wherein x can be 0 or any other predefined or configured value.

69. The method of any one of embodiments 34 to 68, further comprising: monitoring the HS-SCCH of the indicated carrier (Nc) for data information.

70. The method of any of embodiments 34-69, further comprising: monitoring the HS-SCCH and HS-PDSCH of the carrier Nc until another command is received on the anchor cell or the secondary cell.

71. The method of any one of embodiments 34-70, wherein the HS-SCCH order is used to indicate The wave change, the HS-SCCH order is provided in the auxiliary cell.

72. The method of any one of embodiments 34-71 wherein the WTRU is configured with an H-RNTI for each carrier.

73. The method of any one of embodiments 34-72, wherein the WTRU monitors the corresponding H-RNTI on the HS-SCCH when the WTRU moves to the indicated carrier.

74. The method of any one of embodiments 34-73, wherein the common H-RNTI is assigned to all of the supplementary carriers.

75. The method of any one of embodiments 34-74, wherein the base station uses the L2 message to indicate a carrier change.

76. The method of any one of embodiments 34-75 wherein one of the two radios is permanently tuned to the anchor carrier and the second radio is dynamically tuned from one of the supplementary carriers to the other.

77. The method of any one of embodiments 34-76, wherein each carrier has a corresponding subframe number that allows the WTRU to measure and report CQI, and the network knows which carrier's CQI is reported on the feedback channel.

78. The method of any one of embodiments 34-77, wherein strict timing is defined between the carrier receiving the data and the reporting process.

79. The method of any of embodiments 34-78, wherein the CQI format in the HS-DPCCH is modified to explicitly indicate the carrier number.

80. The method of any one of embodiments 34-79, wherein the WTRU measures and reports the CQI upon receiving the data from the carrier.

81. The method of any of the preceding embodiments, wherein the WTRU is configured to dynamically initiate and deactivate one or more of the plurality of supplementary carriers.

82. The method of embodiment 81, wherein the UMTS Terrestrial Radio Access Network (UTRAN) is configured to separately control the initiation and deactivation of the supplementary carrier using the HS-SCCH order.

83. The method of embodiment 82, wherein the HS-SCCH order is configured to communicate an indication of which carrier should be activated and deactivated.

84. The method of embodiment 81 wherein the indication of which carrier should be activated and deactivated is transmitted on the accompanying physical layer message.

85. A method as in any one of the preceding embodiments, wherein the command type bit is marked as x _odt,1 ,x _odt,2 ,x _odt,3 , and the command bit is marked as x _ord,1 ,x _ord,2 ,x _{Ord, 3} .

86. The method of embodiment 85, wherein if the command type x _odt,1 ,x _odt,2 ,x _odt,3 = '010', the command is for x _ord,1 ,x _ord,2 ,x _{ord, 3,} the secondary carrier indicated by the index start command.

87. The method of any one of embodiments 85 to 86, wherein if the command type x _odt,1 ,x _odt,2 ,x _odt,3 = '011', then the command is for x _ord,1 ,x The disable command of the auxiliary carrier index indicated by _{ord, 2} , x _{ord, 3} .

88. The method of embodiment 85, wherein if the command type x _odt,1 ,x _odt,2 ,x _odt,3 = '010', then the command map is defined as uf x _{ord, 1} =1, and the auxiliary carrier 1 Will be launched.

89. The method of embodiment 88, wherein if x _{ord, 1} =0, the supplementary carrier 1 is deactivated.

90. The method of any one of embodiments 88 to 89, wherein. If x _{ord, 2} =0, the secondary carrier 2 is deactivated.

91. The method of any one of embodiments 88 to 90, wherein if x _{ord, 3} =1, the supplementary carrier 3 is activated.

92. The method of any one of embodiments 88 to 91, wherein if x _{ord, 3} =0, the supplementary carrier 3 is deactivated.

93. The method of any one of embodiments 88-92, wherein the CQI feedback report for the carrier is stopped once the secondary carrier is deactivated.

94. The method of any one of embodiments 88-93, wherein the CQI report is resumed once the supplementary carrier is activated.

95. The method of any of the preceding embodiments, further comprising: transmitting the predetermined signature in a HARQ-ACK field of the HS-DPCCH.

96. The method of any of the preceding embodiments, wherein the acknowledgment/negative acknowledgment (ACK/NACK) information is transmitted using a superposition of the modulated signature.

97. The method of embodiment 96, wherein the ACK and NACK values are reversed.

98. The method of any one of embodiments 96-97 wherein all transmitted signatures are to be summed and the sum is scaled by a factor ΔMC-ACK-NACK.

99. The method of any one of embodiments 96-98, wherein the value of the scaling factor ΔMC-ACK-NACK is determined by a predetermined rule based on the number of non-zero ACK-NACK values transmitted.

100. The method of embodiment 99, wherein the lookup table that maps the scaling factor to a non-zero ACK-NACK number is predefined and signaled by the UTRAN.

101. The method of embodiment 99, wherein the lookup table that maps the scaling factor to a non-zero ACK-NACK number is signaled by the network.

102. A method for performing initiation and deactivation of a downlink multi-carrier operation, the method comprising: receiving an explicit signal for simultaneously activating or deactivating a group of carriers.

103. The method of embodiment 102, wherein the explicit signal is received from a UTMS Terrestrial Radio Access Network (UTRAN).

104. The method of any one of embodiments 102 to 103, wherein the set of carriers comprises all of the supplementary carriers in a given radio band.

105. The method of any one of embodiments 102 to 104, wherein the radio band is pre-configured.

106. The method of any one of embodiments 102 to 105, wherein the radio band is implied based on a band receiving the explicit message.

107. The method of any one of embodiments 102 to 106, wherein the set of carriers includes all downlinks Secondary carrier.

108. The method of any one of embodiments 102-107, wherein the set of carriers comprises all downlink assisted carriers associated with the designated downlink anchor carrier.

109. The method of any one of embodiments 102 to 108, wherein the set of carriers comprises all downlink carriers in a particular frequency band.

110. The method of any one of embodiments 102-109, wherein the set of carriers comprises all non-anchor carriers in the downlink.

111. The method of any one of embodiments 102-110, wherein the set of carriers comprises all carriers that are part of a carrier group, the carrier group being a predetermined list of downlink carriers.

112. The method of embodiment 111, wherein the list of downlink carriers within the group can be pre-configured by radio resource control (RRC) communication or pre-configured on the WTRU when establishing/reconfiguring the radio bearer.

113. The method of any one of embodiments 102 to 112, wherein the set of carriers is defined as all carriers to which the WTRU is assigned the same temporary radio network identification code.

114. The method of any one of embodiments 102 to 113 wherein the explicit signal is a new High Speed Common Control Channel (HS-SCCH) command.

115. The method of embodiment 114, wherein the new HS-SCCH order is different from an existing command for starting and deactivating the secondary service HS-DSCH cell.

116. The method of any one of embodiments 102 to 115, wherein the explicit signal is an existing command for activating and deactivating a secondary serving HS-DSCH cell, wherein the command is reinterpreted, thereby not only indicating the secondary Serving the initiation and deactivation of HS-DSCH cells, and also indicating the initiation and deactivation of a group of carriers.

117. The method of any one of embodiments 102-116, wherein the explicit signal is a new L2 or L3 explicit message designed to simultaneously activate or deactivate a set of carriers.

118. The method of embodiment 116, wherein the existing message is applied to those carriers that are considered to be auxiliary in their respective bands.

119. The method of any one of embodiments 102 to 118 wherein the explicit signal is applied only to carriers in the band in which the signal is transmitted.

120. The method of any one of embodiments 1 to 119 wherein the explicit signal is applied only to the supplementary carrier associated with the same anchor carrier.

121. The method of any one of embodiments 102 to 120, further comprising: receiving an explicit L1 signal for activating or deactivating each carrier.

122. The method of embodiment 121, wherein the L1 signal comprises a new HS-SCCH order designed to enable or disable each carrier.

123. The method of any one of embodiments 121-122, wherein the new HS-SCCH order transmits a start/deactivate command for the plurality of carriers.

124. The method of any one of embodiments 121 to 123, wherein the at least one HS-SCCH order type bit is mapped to the designated carrier.

125. The method of embodiment 124, wherein the mapping of the HS-SCCH command type bits is configured by the network or is implied.

126. The method of any one of embodiments 121 to 125, wherein the HS-SCCH command transmits a single start/deactivate command in combination with the target carrier address.

127. The method of embodiment 126, wherein the two bits in the HS-SCCH order indicate one of the four carriers.

128. The method of embodiment 126, wherein one of the HS-SCCH commands indicates carrier activation or deactivation.

129. The method of any one of embodiments 121 to 128, wherein the L1 signal comprises an E-DCH Absolute Authorization Channel (E-AGCH), the channel having a reinterpretation for notifying simultaneous start/stop Use the bit field of multiple carriers.

130. The method of any one of embodiments 121 to 129, further comprising: receiving an explicit L2 or L3 signal, wherein the signal comprises a new HS-SCCH order designed to enable or disable each carrier.

131. The method of any one of embodiments 121-130, wherein the carrier activation or deactivation is triggered by an implicit rule on the WTRU.

132. The method of embodiment 131, wherein the carrier activation or deactivation is triggered based on a buffer status.

133. The method of any one of embodiments 131-132, wherein the carrier activation or deactivation is triggered based on a transport block size received on the anchor cell.

134. The method of any one of embodiments 131 to 133, wherein the carrier activation or deactivation is triggered according to a power headroom.

135. The method of any one of embodiments 131 to 134, wherein the carrier activation or deactivation is triggered based on the received signal power.

136. The method of any one of embodiments 102 to 135, wherein the threshold for triggering carrier activation or deactivation is configured by the network.

137. The method of any one of embodiments 102 to 136, further comprising: the WTRU notifying the carrier to start or disable the indication message by using L1, L2 or L3 communication.

138. The method of embodiment 137, wherein the indication message comprises a measurement or cause that triggers carrier activation or deactivation.

139. The method of any one of embodiments 137 to 138, wherein the indication message comprises an index indicating a carrier to be activated/deactivated.

140. The method of any one of embodiments 102 to 139, further comprising the WTRU waiting for an explicit start or disable command from the network.

141. The method of any one of embodiments 102 to 140, wherein the indication message is a carrier stop In use, the WTRU autonomously deactivates the carrier.

142. The method of any one of embodiments 102 to 141, wherein the WTGRU autonomously activates the carrier when the indication message is a carrier deactivation.

143. The method of any one of embodiments 102-142, further comprising: receiving an L3 message from the network, wherein the message configures the WTRU for DRX operation.

144. The method of embodiment 143, wherein the message comprises a set of DRX parameters implicitly applied by the WTRU to all of the downlink carriers.

145. The method of embodiment 143, wherein the message includes a set of DRX parameters for each frequency band, and the WTRU applies the parameter to all downlink carriers in a frequency band.

146. The method of embodiment 143, wherein the message comprises a set of DRX parameters for each carrier, respectively.

147. The method of embodiment 143, wherein the message comprises a set of DRX parameters for each anchor carrier.

148. The method of embodiment 147, wherein the set of DRX parameters for the secondary carrier are the same as the set of parameters for the associated anchor carrier.

149. The method of embodiment 143, wherein the message comprises a set of DRX parameters for each set of downlink carriers, and all carriers in the same group use the same DRX parameters.

150. The method of embodiment 149, wherein the group is pre-configured with radio resource control (RRC) communication or pre-configured on the WTRU when establishing/reconfiguring the radio bearer.

151. The method of embodiment 149, wherein the group is defined as all carriers that have assigned the same temporary radio network identifier to the WTRU.

152. The method of any one of embodiments 102 to 151, further comprising: deactivating DRX for all downlink carriers when configuring the downlink carrier.

153. The method of any one of embodiments 102 to 152, wherein the DRX state is pre-configured and applied to all downlink carriers or only to a subset of the downlink carriers.

154. The method of any one of embodiments 102 to 153, wherein the DRX state is configured separately for each downlink carrier.

155. The method of any one of embodiments 102 to 154, further comprising: starting DRX.

156. The method of any one of embodiments 102 to 155, wherein the DRX is initiated in response to the activation message.

157. The method of any one of embodiments 102 to 156, wherein the DRX is deactivated in response to the disable message.

158. The method of any one of embodiments 156 to 157, wherein the initiating or deactivating message is for a particular carrier or group of carriers.

159. The method of any one of embodiments 102 to 158, wherein the DRX is implicitly enabled or disabled in response to one or more measurements.

160. The method of embodiment 159, wherein the measuring comprises a downlink activity over a specified time period.

161. The method of embodiment 159, wherein the measuring comprises a downlink data rate over a specified time period.

162. The method of embodiment 159, wherein the measuring comprises the reported CQI.

163. The method of embodiment 159, wherein the measuring comprises a radio power measurement.

164. The method of any one of embodiments 102 to 163, wherein the DRX is activated or deactivated according to a pre-configured threshold.

165. The method of any one of embodiments 102 to 164, further comprising: signaling a status change to the network when the DRX is implicitly activated or deactivated.

166. The method of embodiment 165, wherein the message comprises any associated carrier index or reference.

167. The method of any one of embodiments 165 to 166, wherein the message includes a trigger state change More measured values.

168. The method of any one of embodiments 165 to 167, wherein the message includes a reason for the state change.

169. The method of any one of embodiments 165 to 168, wherein the message comprises a start time.

170. The method of any one of embodiments 165 to 169, wherein the message comprises a new state.

171. The method of any one of embodiments 102-170, further comprising: restoring the DRX state of the carrier to its pre-deactivation state after the one or more carriers are activated.

172. The method of any one of embodiments 102 to 171, further comprising configuring the DRX state of the carrier to be the same state as the anchor carrier after the one or more carriers are activated.

173. The method of any one of embodiments 102 to 172, further comprising configuring the DRX state of the carrier to be the same state as the anchor carrier in the same band after starting the one or more carriers.

174. The method of any one of embodiments 102 to 173, further comprising: configuring the DRX state of the carrier to be the same state as the other carriers in the same frequency band after the one or more carriers are activated.

175. The method of any one of embodiments 102 to 174, further comprising configuring the DRX state to be active after the one or more carriers are activated.

176. The method of any one of embodiments 102 to 175, further comprising configuring the DRX state to be inactive after the one or more carriers are activated.

177. The method of any one of embodiments 102 to 176, further comprising: deactivating DRX of all carriers after starting one or more carriers.

178. The method of any one of embodiments 102 to 177, further comprising: deactivating DRX of all carriers in the same band as the newly activated carrier after starting one or more carriers.

179. The method of any one of embodiments 102 to 178, further comprising: starting DRX of all carriers after starting one or more carriers.

180. The method of any one of embodiments 102 to 179, further comprising: starting DRX of all or one of the remaining active carriers after the one or more carriers are deactivated.

181. The method of any one of embodiments 102-180, further comprising: deactivating all remaining active carriers or DRXs of one of the groups of carriers after deactivating one or more carriers.

182. A wireless transmit/receive unit (WTRU) configured to perform the method as described in any one of embodiments 1 to 181.

183. An integrated circuit configured to perform the method as described in any one of embodiments 1 to 181.

184. A base station configured to perform the method as described in any one of embodiments 1 to 181.

UTRAN‧‧ terrestrial radio access network

WTRU‧‧‧A wireless transmission/reception unit

SRNC‧‧‧Service Radio Network Controller

CRNC‧‧‧Control Radio Network Controller

100‧‧‧Example wireless communication system

160‧‧‧ Carrier

170‧‧‧ Carrier

Claims (16)

Means for enabling/disabling a plurality of auxiliary carriers, the apparatus comprising: receiving a first command, the first command comprising a first combination of at least three command type bits and a first combination of at least three command bits Determining from the first command one of: at least one supplementary carrier to be activated and at least one supplementary carrier to be deactivated, a plurality of supplementary carriers to be activated, or a plurality of supplementary carriers to be deactivated; The activation/deactivation of a plurality of supplementary carriers is performed based on the determination. The method of claim 1, wherein the first combination of the at least three command type bits is compatible with a two carrier configuration and a four carrier configuration. The method of claim 1, wherein the plurality of auxiliary carriers comprises three auxiliary downlink carriers. The method of claim 1, wherein the plurality of supplementary carriers comprise at least three auxiliary downlink carriers and at least one auxiliary uplink carrier. The method of claim 1, wherein if the command includes more than three command bits or more than three command type bits, the bit exceeding the three command bits or the bit exceeding the three command type bits It is repurposed from a transport block size information field. The method of claim 1, wherein the initiating/deactivating is performed on a subset of the at least four auxiliary carriers. The method of claim 1, wherein the command comprising the combination of the at least three command type bits and the combination of the at least three command bits provides an activation/deactivation message associated with at least four auxiliary carriers. The method of claim 7, wherein the at least four auxiliary carriers comprise at least one auxiliary downlink carrier and at least one auxiliary uplink carrier, and wherein the at least one auxiliary downlink carrier is a primary service high speed downlink sharing The channel (HS-DSCH) cell, and the at least one auxiliary uplink carrier are primary service enhanced dedicated channel (E-DCH) cells. A wireless transmit/receive unit (WTRU), comprising: a processor configured to: receive a command comprising a combination of at least three command type bits and a combination of at least three command bits; from the command Determining one of: at least one supplementary carrier to be activated and at least one supplementary carrier to be deactivated, a plurality of supplementary carriers to be activated, or a plurality of supplementary carriers to be deactivated; and performing startup based on the determination/ Disabled. The WTRU of claim 9, wherein the command including the combination of the at least three command type bits and the combination of the at least three command bits is configured on at least two supplementary carriers When used. A wireless transmit/receive unit (WTRU) as claimed in claim 9, wherein the at least four supplementary carriers comprise three auxiliary downlink carriers. The WTRU of claim 9, wherein the at least four auxiliary carriers comprise at least three auxiliary downlink carriers and at least one auxiliary uplink carrier. The WTRU of claim 9, wherein if the command includes more than three command bits or more than three command type bits, the bit exceeding three command bits or more than three The bit of the command type bit is reused from a transport block size information field. A WTRU as claimed in claim 9 wherein the enabling/disabling is performed on a subset of the at least four supplementary carriers. A wireless transmit/receive unit (WTRU) according to claim 9, wherein the command including the combination of the at least three command type bits and the combination of the at least three command bits provides for at least four auxiliary carriers A start/stop message. The WTRU of claim 15, wherein the at least four auxiliary carriers comprise at least one auxiliary downlink carrier and at least one auxiliary uplink carrier, and wherein the at least one auxiliary downlink carrier is A secondary service high speed downlink shared channel (HS-DSCH) cell, and the at least one auxiliary uplink carrier is a primary service enhanced dedicated channel (E-DCH) cell.