KR20150138854A - Service continuity with embms support on non-self-standing carrier frequency - Google Patents

Abstract

Methods, apparatus, and computer program products for wireless communication are provided. The device may be a UE. The UE receives information indicating the available MBMS service, the non-independent carrier frequency for which the available MBMS service is provided, and the one or more PCC frequencies to which the non-standing carrier frequency is attached. The UE selects a preference for one of the one or more PCC frequencies to obtain information for receiving available MBMS services on the non-independent carrier frequency. The UE receives an available MBMS service on a non-independent carrier frequency based on the obtained information.

Description

[0002] SERVICE CONTINUITY WITH EMBMS SUPPORT ON NON-SELF-STANDING CARRIER FREQUENCY WITH EMBMS SUPPORT FOR NON-

This application claims the benefit of Chinese PCT Application No. PCT / CN2013 / 073764, filed April 4, 2013 entitled "SERVICE CONTINUITY WITH EMBMS SUPPORT ON NCT ", which is incorporated herein by reference in its entirety They are explicitly integrated.

[0001] Aspects of the present disclosure generally relate to wireless communication systems and, more particularly, to multimedia broadcast multicast services (MBMS) for e-MBMS (non-self-standing carriers) ) Support for service continuity.

Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and the like. These wireless networks may be multiple access networks capable of supporting multiple users by sharing available network resources. Examples of such multiple access networks include, but are not limited to, code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) SC-FDMA) networks.

A wireless communication network may include a plurality of base stations capable of supporting communication for a plurality of user equipment (UE). The UE may also communicate with the base station on the downlink and uplink. The downlink (or forward link) refers to the communication link from the base station to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the base station.

In an aspect, a method, a computer program product, and an apparatus for wireless communication are provided. The device may be a UE. The UE may determine the available MBMS service, the non-independent carrier frequency provided above the available MBMS service, and one or more primary component carrier (PCC) frequencies to which the non-independent carrier frequency is attached Lt; / RTI > The UE selects a preference for one of the one or more PCC frequencies to obtain information for receiving the available MBMS service on the non-independent carrier frequency. The UE receives an available MBMS service on a non-independent carrier frequency based on the obtained information.

In an aspect, a method, a computer program product, and an apparatus for wireless communication are provided. The device may be a network entity. The network entity receives information indicating which MBMS services are available, the non-standalone carrier frequency on which the available MBMS service is provided, and one or more PCC frequencies to which the non-standalone carrier frequency is attached. The network entity transmits the information to the UE.

1 is a block diagram conceptually illustrating an example of a telecommunication system.
2 is a block diagram conceptually showing an example of a downlink frame structure in a telecommunication system;
3 is a block diagram conceptually illustrating a design of a base station / eNodeB and a UE configured in accordance with an aspect of the present disclosure.
4A discloses a continuous carrier aggregation type.
Figure 4b discloses a non-continuous carrier aggregation type.
5 begins MAC layer data aggregation.
6 is a block diagram illustrating a method for controlling wireless links in multi-carrier configurations.
7 is a diagram illustrating an example of a network architecture.
8A is a diagram illustrating an example of an evolutionary multimedia broadcast multicast service channel configuration in a multicast broadcast single frequency network.
FIG. 8B is a diagram illustrating a format of a multicast channel scheduling information media access control control element. FIG.
Figure 9 is a diagram illustrating exemplary methods.
10 is a flow diagram of a first method of wireless communication.
11 is a flow diagram of a second method of wireless communication.
12 is a conceptual data flow diagram illustrating data flow between different modules / means / components in an exemplary apparatus.
13 is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system.
14 is a conceptual data flow diagram illustrating data flow between different modules / means / components in an exemplary apparatus.
15 is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system.

The following detailed description in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent only the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. It will be apparent, however, to one of ordinary skill in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring those concepts.

The techniques described herein may be used for various wireless communication networks such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network may implement wireless technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95 and IS-856 standards. The TDMA network may implement a wireless technology such as Global System for Mobile Communications (GSM). OFDMA networks may implement wireless technologies such as evolved UTRA (E-UTRA), UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20 and Flash-OFDM. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are new releases of UMTS using E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named "Third Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein may be used for the wireless networks and wireless technologies described above as well as for other wireless networks and wireless technologies. For clarity, certain aspects of the techniques are described below for LTE, and LTE terminology is used in much of the following discussion.

1 illustrates a wireless communication network 100 that may be an LTE network. The wireless network 100 may include a plurality of evolved Node Bs (eNodeBs) 110 and other network entities. The eNodeB may be a station that communicates with the UEs and may also be referred to as a base station, an access point, and so on. Node B is another example of a station communicating with UEs.

Each eNodeB 110 may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to the coverage area of the eNodeB and / or the eNodeB subsystem that serves this coverage area, depending on the context in which the term is used.

The eNodeB may provide communication coverage for macro cells, picocells, femtocells, and / or other types of cells. The macrocell may cover a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs with a service subscription. The picocell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a hypothesis) and may also be associated with UEs associated with the femtocell (e.g., UEs in a closed subscriber group (CSG) RTI ID = 0.0 > UEs, < / RTI > etc.). The eNodeB for a macro cell may also be referred to as a macro eNodeB. The eNodeB for the picocell may also be referred to as the pico eNodeB. The eNodeB for a femtocell may also be referred to as a femto eNodeB or a home eNodeB. In the example shown in FIG. 1, the eNodeBs 110a, 110b, and 110c may be macro eNodeBs for the macrocells 102a, 102b, and 102c, respectively. eNodeB 110x may be a pico eNodeB for picocell 102x. eNodeBs 110y and 110z may be femto eNodeBs for femtocells 102y and 102z, respectively. The eNodeB may support one or multiple (e.g., three) cells.

The wireless network 100 may also include relay stations. The relay station may receive a transmission of data and / or other information from an upstream station (e.g., eNodeB or UE) and send a transmission of data and / or other information to a downstream station (e.g., UE or eNodeB) Station. The relay station may also be a UE relaying transmissions for other UEs. In the example shown in FIG. 1, relay station 110r may communicate with eNodeB 110a and UE 120r to facilitate communication between eNodeB 110a and UE 120r. The relay station may also be referred to as a relay eNodeB, a relay, and so on.

The wireless network 100 may be a heterogeneous network that includes different types of eNodeBs, e. G., Macro eNodeBs, pico eNodeBs, femto eNodeBs, repeaters, and the like. These different types of eNodeBs may have different transmission power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, the macro eNodeBs may have a high transmit power level (e.g., 20 watts), but the pico eNodeBs, femto eNodeBs, and repeaters may have a lower transmit power level (e.g., 1 watt) It is possible.

The wireless network 100 may support synchronous or asynchronous operation. For synchronous operation, eNodeBs may have similar frame timing, and transmissions from different eNodeBs may be roughly aligned in time. For asynchronous operation, eNodeBs may have different frame timings, and transmissions from different eNodeBs may not be temporally aligned. The techniques described herein may be used for both synchronous and asynchronous operation.

The network controller 130 may couple to the set of eNodeBs and provide coordination and control for these eNodeBs. The network controller 130 may communicate with the eNodeBs 110 via a backhaul. eNodeBs 110 may also communicate with each other, e.g., directly or indirectly, via a wireless or wired backhaul.

The UEs 120 may be interspersed throughout the wireless network 100, and each UE may be static or mobile. The UE may also be referred to as a terminal, a mobile station, a subscriber unit, a station, and so on. The UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a wireless local loop (WLL) The UE may be capable of communicating with macro eNodeBs, pico eNodeBs, femto eNodeBs, repeaters, and the like. In Figure 1, a solid line with double arrows represents the desired transmissions between the UE and the serving eNodeB, which is the eNodeB designated to serve the UE on the downlink and / or uplink. A dotted line with double arrows indicates the interfering transmissions between the UE and the eNodeB.

LTE utilizes orthogonal frequency division multiplexing (OFDM) on the downlink and single carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, and these orthogonal subcarriers are also commonly referred to as tones, bins, and the like. Each subcarrier may be modulated with data. In general, modulation symbols are transmitted in OFDM in the frequency domain and in SC-FDM in the time domain. The spacing between adjacent subcarriers may be fixed and the total number K of subcarriers may depend on the system bandwidth. For example, the spacing of subcarriers may be 15 kHz, and the minimum resource allocation (referred to as a 'resource block') may be 12 subcarriers (or 180 kHz). As a result, the nominal FFT size may be equal to 128, 256, 512, 1024 or 2048, respectively, for a system bandwidth of 1.25, 2.5, 5, 10 or 20 megahertz (MHz). The system bandwidth may also be partitioned into subbands. For example, the subband may cover 1.08 MHz (i.e., 6 resource blocks) and may be 1, 2, 4, 8, or 16 for each 1.25, 2.5, 5, 10, or 20 MHz system bandwidth Subbands may exist.

2 shows a downlink frame structure used in LTE. The transmission timeline for the downlink may be partitioned into units of radio frames. Each radio frame may have a predetermined duration (e.g., 10 milliseconds (ms)) and may be partitioned into 10 subframes with indices of 0 to 9. Each subframe may include two slots. Thus, each radio frame may comprise 20 slots with indices of 0 to 19. Each slot may comprise L symbol periods, for example, seven symbol periods for a regular cyclic prefix (as shown in FIG. 2) or six symbol periods for an extended cyclic prefix have. The 2L symbol periods in each subframe may be assigned indices of 0 to 2L-1. The available time frequency resources may be partitioned into resource blocks. Each resource block may cover N subcarriers (e.g., 12 subcarriers) in one slot.

In LTE, the eNodeB may send a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) for each cell in the eNodeB. The primary and secondary synchronization signals may be transmitted in symbol periods 6 and 5, respectively, in subframes 0 and 5 of each radio frame with a regular cyclic prefix, as shown in FIG. 2, have. The synchronization signals may be used by the UEs for cell detection and acquisition. The eNodeB may send a physical broadcast channel (PBCH) in symbol periods 0 to 3 in slot 1 of subframe 0. The PBCH may also carry specific system information.

Although depicted in the entire first symbol period in FIG. 2, the eNodeB may transmit the Physical Control Format Indicator Channel (PCFICH) in only a portion of the first symbol period of each subframe. The PCFICH may carry the number of symbol periods (M) used for the control channels, where M may be equal to 1, 2, or 3 and may vary from subframe to subframe. M may also be equal to 4, for example, for small system bandwidth with fewer than 10 resource blocks. In the example shown in Fig. 2, M = 3. The eNodeB may transmit a physical HARQ indicator channel (PHICH) and a physical downlink control channel (PDCCH) in the first M symbol periods (M = 3 in FIG. 2) of each subframe. The PHICH may also carry information to support Hybrid Automatic Repeat reQuest (HARQ). The PDCCH may carry information about uplink and downlink resource allocation for UEs and power control information for uplink channels. Although not shown in the first symbol period in Fig. 2, it is understood that PDCCH and PHICH are also included in the first symbol period. Similarly, although not shown in such a manner in FIG. 2, the PHICH and PDCCH are also in both the second and third symbol periods. The eNodeB may transmit a Physical Downlink Shared Channel (PDSCH) in the remaining symbol periods of each subframe. The PDSCH may carry data for the scheduled UEs for data transmission on the downlink. Various signals and channels in LTE are described in 3GPP TS 36.211 entitled " Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation "

The eNodeB may also transmit the PSS, SSS and PBCH at the center 1.08 MHz of the system bandwidth used by the eNodeB. The eNodeB may also transmit PCFICH and PHICH over the entire system bandwidth in each symbol period over which these channels are transmitted. The eNodeB may send the PDCCH to groups of UEs in certain parts of the system bandwidth. The eNodeB may send the PDSCH to specific UEs in certain parts of the system bandwidth. The eNodeB may transmit the PSS, the SSS, the PBCH, the PCFICH, and the PHICH to all the UEs in a broadcast manner, the PDCCH may be transmitted to specific UEs in a unicast manner, and the PDSCH may be unicast .

Multiple resource elements may be available in each symbol period. Each resource element may cover one subcarrier in one symbol period and may be used to transmit one modulation symbol, which may be a real value or a complex value. Resource elements that are not used for a reference signal in each symbol period may be arranged in resource element groups (REGs). Each REG may include four resource elements in one symbol period. The PCFICH may occupy four REGs, which may be approximately equally spaced across the frequency in symbol period 0. [ The PHICH may occupy three REGs that may be spread over frequency, in one or more configurable symbol periods. For example, all three REGs for PHICH may belong to symbol period 0, or may be spread in symbol periods 0, 1 and 2. The PDCCH may occupy 9, 18, 32 or 64 REGs that may be selected from available REGs in the first M symbol periods. Only certain combinations of REGs may be allowed for the PDCCH.

The UE may know the specific REGs used for PHICH and PCFICH. The UE may search for different combinations of REGs for the PDCCH. The number of combinations for searching is typically less than the number of combinations allowed for the PDCCH. The eNodeB may send the PDCCH to the UE in any combination of combinations the UE will search for.

The UE may be within the coverage of multiple eNodeBs. One of these eNodeBs may be selected to serve the UE. The serving eNodeB may be selected based on various criteria such as received power, path loss, signal-to-noise ratio (SNR), and so on.

FIG. 3 shows a block diagram of one design of a base station / eNodeB 110 and a UE 120, which may be one of the base stations / eNodeBs and the UEs in FIG. For a limited association scenario, the base station 110 may be the macro eNodeB 110c in FIG. 1 and the UE 120 may be the UE 120y. The base station 110 may also be some other type of base station. The base station 110 may be provided with antennas 634a to 634t and the UE 120 may be provided with antennas 652a to 652r.

At base station 110, transmit processor 620 may receive data from data source 612 and control information from controller / processor 640. The control information may be for PBCH, PCFICH, PHICH, PDCCH, and the like. The data may be for PDSCH or the like. Processor 620 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The processor 620 may also generate reference symbols for the PSS, SSS, and cell-specific reference signals, for example. (TX) multiple-input multiple-output (MIMO) processor 630 performs spatial processing (e.g., precoding) on data symbols, control symbols, and / And may provide output symbol streams to modulators (MODs) 632a through 632t. Each modulator 632 may process each output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 632 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 632a through 632t may be transmitted via antennas 634a through 634t, respectively.

At UE 120, antennas 652a through 652r may receive downlink signals from base station 110 and provide received signals to demodulators (DEMODs) 654a through 654r, respectively. Each demodulator 654 may condition (e.g., filter, amplify, downconvert, and digitize) each received signal to obtain input samples. Each demodulator 654 may further process the input samples (e.g., for OFDM, etc.) to obtain the received symbols. MIMO detector 656 may obtain received symbols from all demodulators 654a through 654r and, if applicable, perform MIMO detection on the received symbols to provide detected symbols. Receive processor 658 processes (e.g., demodulates, deinterleaves, and decodes) the detected symbols, provides decoded data for UE 120 to data sink 660, and provides decoded control information Controller / processor 680. < / RTI >

On the uplink, at the UE 120, the transmit processor 664 receives data (e.g., for the PUSCH) from the data source 662 and data from the controller / processor 680 (e.g., for the PUCCH) Lt; RTI ID = 0.0 > control information. ≪ / RTI > The processor 664 may also generate reference symbols for the reference signal. The symbols from transmit processor 664 are precoded by the TX MIMO processor 666, if applicable, and further processed by demodulators 654a through 654r (e.g., for SC-FDM, etc.) May be transmitted to the base station 110. At base station 110, the uplink signals from UE 120 are received by antenna 634, processed by modulators 632 and, if applicable, detected by MIMO detector 636, May be further processed by the processor 638 to obtain decoded data and control information transmitted by the UE 120. [ Processor 638 may provide the decoded data to data sink 639 and to decoded control information to controller / processor 640.

The controllers / processors 640 and 680 may direct the operation at the base station 110 and the UE 120, respectively. The processor 640 and / or other processors and modules at the base station 110 may perform or direct the execution of various processes for the techniques described herein. The processors 680 and / or other processors and modules at the UE 120 may also be implemented in the functional blocks shown in Figures 4 and 5, and / or in the execution of other processes for the techniques described herein And may instruct or instruct the user. Memories 642 and 682 may store data and program codes for base station 110 and UE 120. [ A scheduler 644 may schedule the UEs for data transmission on the downlink and / or uplink.

In one configuration, the UE 120 for wireless communication includes means for detecting interference from the interfering base station during the UE's connected mode, means for selecting a yielded resource of the interfering base station, Means for obtaining an error rate of a physical downlink control channel for the mobile station, and means for declaring a radio link failure in response to the error rate exceeding a predetermined level. In one aspect, the above-described means comprise a processor (s), a controller (s) 680, a memory 682, a receive processor 658, a MIMO detector 656 configured to perform the functions recited by the above- Demodulators 654a, and antennas 652a. In another aspect, the means described above may be a module or any device configured to perform the functions recited by the means described above.

carrier  collection

LTE Advanced UEs can use up to 20 Mhz bandwidths allocated for carrier aggregation up to a total of 100 Mhz (5 component carriers) used for transmission in each direction. In general, less traffic may be transmitted on the uplink than on the downlink, and the uplink spectrum allocation may be smaller than the downlink allocation. For example, if 20 MHz is allocated to the uplink, 100 MHz may be assigned to the downlink. These asymmetric FDD allocations are able to preserve the spectrum and are a good match for asymmetric bandwidth utilization by broadband subscribers.

carrier  Aggregation types

For LTE advanced mobile systems, two types of carrier aggregation (CA) methods have been proposed: continuous CA and non-continuous CA. They are shown in Figures 4A and 4B. A non-contiguous CA occurs when multiple available component carriers are separated along the frequency band (FIG. 4B). A continuous CA, on the other hand, occurs when multiple available component carriers are adjacent to one another (FIG. 4A). Both non-continuous and consecutive CAs aggregate multiple LTE / component carriers to serve a single unit of the LTE Advanced UE.

Multiple RF receiving units and multiple FFTs may be deployed in a non-contiguous CA in an LTE Advanced UE because the carriers are separated along the frequency band. Propagation path loss, Doppler shift, and other radio channel characteristics may vary widely in different frequency bands, since non-continuous CAs support data transmissions over multiple separate carriers over a large frequency range.

Thus, to support broadband data transmission under non-continuous CA approaches, methods may be used to adaptively adjust the coding, modulation, and transmit power for different component carriers. For example, in an LTE Advanced System where the enhanced NodeB (eNodeB) has a defined transmit power for each component carrier, the effective coverage or supportable modulation and coding of each component carrier may be different.

Data aggregation methods

FIG. 5 shows the aggregation of the transmission blocks TBs from different component carriers in the medium access control (MAC) layer (FIG. 5) for an international mobile telecommunications (IMT) advanced system. In MAC layer data aggregation, each component carrier has its own independent Hybrid Automatic Repeat Request (HARQ) entity in the MAC layer and its own transmission configuration parameters (e.g., transmit power, Modulation and coding schemes, and multiple antenna configurations). Similarly, for the physical layer, one HARQ entity is provided for each component carrier.

Control Signaling

Generally, there are three different approaches for deploying control channel signaling for multiple component carriers. The first method involves a small modification of the control structure in LTE systems, where each component carrier is given its own coded control channel.

The second method entails jointly coding the control channels of different component carriers and placing the control channels on a dedicated component carrier. The control information for multiple component carriers will be integrated as signaling content in a dedicated control channel. As a result, the backward compatibility with the control channel structure in LTE systems is maintained and the signaling overhead in the CA is reduced.

Multiple control channels for different component carriers are jointly coded and then transmitted over the entire frequency band formed by the third CA method. This approach provides low signaling overhead and high decoding performance for control channels at the expense of high power consumption on the UE side. However, this method is not compatible with LTE systems.

Handover  Control

It is desirable to support transmission continuity during the handover procedure across multiple cells when a CA is used for the IMT Advanced UE. However, retaining sufficient system resources (i. E., Component carriers with good transmission quality) for an incoming UE with specific CA configurations and quality of service (QoS) requirements may be impractical for the next eNodeB. The reason is that the channel conditions of two (or more) neighboring cells (eNodeBs) may be different for a particular UE. In one approach, the UE measures the performance of only one component carrier in each neighboring cell. This provides measurement delay, complexity, and energy consumption similar to those in LTE systems. Estimates of the performance of other component carriers in the corresponding cell may be based on the measurement results of one component carrier. Based on this estimation, the handover determination and transmission configuration may be determined.

In accordance with various embodiments, a UE operating in a multi-carrier system (also referred to as carrier aggregation) may operate on multiple carriers, such as control and feedback functions, on the same carrier, which may be referred to as a "primary carrier" And are configured to aggregate certain functions. The remaining carriers that rely on the primary carrier for support are referred to as associated secondary carriers. For example, the UE may include an optional dedicated channel (DCH), nonscheduled grants, a physical uplink control channel (PUCCH), and / or a physical downlink control channel (physical downlink control channel (PDCCH)). Both the signaling and the payload may be transmitted to the UE by the eNodeB on the downlink and to the eNodeB by the UE on the uplink.

In some embodiments, there may be multiple primary carriers. In addition, the secondary carriers affect the basic operation of the UE, including physical channel establishment and RLF procedures, which are layer 2 procedures, such as those described in 3GPP Technical Specification 36.331 for the LTE RRC protocol May be added or removed.

FIG. 6 illustrates a method 600 for controlling wireless links in a multi-carrier wireless communication system by grouping physical channels, according to one example. As shown, the method includes, at block 605, aggregating control functions from at least two carriers onto one carrier to form a primary carrier and one or more associated secondary carriers. At next block 610, communication links are established for the primary carrier and each secondary carrier. Then, at block 615, communication is controlled based on the primary carrier.

7 is a diagram illustrating an LTE network architecture 700. FIG. The LTE network architecture 700 may be referred to as an Evolved Packet System (EPS) EPS 700 includes at least one user equipment (UE) 702, Evolved UMTS Terrestrial Radio Access Network (E-UTRAN) 704, Evolved Packet Core (EPC) 710, and an operator's Internet Protocol (Not shown). The EPS can interconnect with other access networks, but their entities / interfaces are not shown for simplicity. As shown, EPS provides packet-switched services, but one of ordinary skill in the art will readily appreciate that the various concepts presented throughout this disclosure may be extended to networks that provide circuit-switched services.

The E-UTRAN includes an evolved Node B (eNB) 706 and other eNBs 708 and may include a Multicast Coordination Entity (MCE) The eNB 706 provides user and control plane protocol terminations to the UE 702. eNB 706 may be connected to another eNB 708 via a backhaul (e.g., X2 interface). The MCE 728 allocates time / frequency radio resources for the eMBMS and determines the radio configuration (e. G., Modulation and coding scheme (MCS)) for the eMBMS. MCE 728 may be part of eNB 706 or it may be a separate entity. eNB 706 may also be referred to as a base station, a Node B, an access point, a base transceiver station, a base station, a wireless transceiver, a transceiver function, a base service set (BSS), an extended service set (ESS) . The eNB 706 provides an access point for the EPC 710 to the UE 702. Examples of the UEs 702 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players MP3 player), a camera, a game console, a tablet, or any other similar function device. The UE 702 may also be implemented as a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, A mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable term.

The eNB 706 is connected to the EPC 710. EPC 710 includes a mobility management entity (MME) 712, a home subscriber server (HSS) 720, other MMEs 714, a serving gateway 716, an MBMS gateway 724, a broadcast multicast service center (BM-SC) 726, and a packet data network (PDN) gateway 718. The MME 712 is a control node that processes the signaling between the UE 702 and the EPC 710. In general, the MME 712 provides bearer and connection management. All user packets are sent through the serving gateway 716, which itself is connected to the PDN gateway 718. [ PDN gateway 718 provides UE IP address assignment and other functions. The PDN gateway 718 and the BM-SC 726 are connected to the IP services 722. IP services 722 may include the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a PS Streaming Service (PSS), and / or other IP services. The BM-SC 726 may provide functions for MBMS user service provisioning and delivery. The BM-SC 726 may serve as an entry point for content provider MBMS transmissions, and may be used to authorize and initiate MBMS bearer services within the PLMN, and may schedule MBMS transmissions And may be used to deliver. MBMS gateway 724 may be used to distribute MBMS traffic to eNBs (e.g., 706, 708) that belong to a Multicast Broadcast Single Frequency Network (MBSFN) area that broadcasts a particular service , Session management (start / stop), and eMBMS-related billing information.

8A is a diagram 750 illustrating an example of the eMBMS channel configuration in the MBSFN. ENBs 752 in cells 752 'may form a first MBSFN region and eNBs 754 in cells 754' may form a second MBSFN region. eNBs 752 and 754 may each be associated with different MBSFN areas, e.g. up to a total of eight MBSFN areas. A cell in the MBSFN region may be designated as an inverted cell. The inverted cells do not provide multicast / broadcast content, but are time synchronized to cells 752 ', 754' and have a limited power on MBSFN resources to limit interference to MBSFN regions. Each eNB in the MBSFN region transmits the same eMBMS control information and data synchronously. Each zone may support broadcast, multicast, and unicast services. A unicast service is a service intended for a particular user, e.g., a voice call. A multicast service is a service that may be received by a group of users, e.g., a subscription video service. A broadcast service is a service that may be received by all users, e.g., a news broadcast. Referring to FIG. 8A, the first MBSFN region may support a first eMBMS broadcast service by providing a specific news broadcast to the UE 770, for example. The second MBSFN region may support the second eMBMS broadcast service, such as by providing another news broadcast to the UE 760. [ Each MBSFN area supports a plurality of physical multicast channels (PMCH) (e.g., 15 PMCHs). Each PMCH corresponds to a multicast channel (MCH). Each MCH may multiplex a plurality of (e.g., twenty-nine) multicast logical channels. Each MBSFN region may have one multicast control channel (MCCH). As such, one MCH may multiplex one MCCH and a plurality of multicast traffic channels (MTCHs), and the remaining MCHs may multiplex a plurality of MTCHs.

The UE may camp on an LTE cell to discover the availability of eMBMS service access and corresponding access layer configuration. In a first step, the UE may obtain a system information block SIB 13 (SIB 13). In a second step, based on SIB 13, the UE may obtain an MBSFN region configuration message on the MCCH. In a third step, based on the MBSFN region configuration message, the UE may obtain an MCH scheduling information (MSI) MAC control element. SIB13 includes: (1) an MBSFN area identifier of each MBSFN area supported by the cell; (E.g., 32, 64, ..., 256 frames), MCCH offset (e.g., 0, 1, ..., 10 frames), MCCH deformation period Information for obtaining an MCCH such as subframe allocation information indicating which subframes of the radio frame indicated by the signaling modulation and coding scheme (MCS), the repetition period, and the offset can transmit the MCCH; And (3) MCCH change notification configuration. There may be one MBSFN area configuration message for each MBSFN area. The MBSFN region configuration message includes an optional session identifier and a temporary mobile group identity (TMGI) of each MTCH identified by the logical channel identifier in the PMCH, (2) the assigned resources for all PMCHs in the region Allocated resources (i. E., Radio frames and subframes) for transmitting each PMCH in the MBSFN region, and (3) MSI MAC control elements are transmitted May represent an MCH scheduling period (MSP) (e.g., 8, 16, 32, ..., or 1024 radio frames).

8B is a diagram 790 illustrating the format of the MSI MAC control element. The MSI MAC control element may be transmitted once in each MSP. The MSI MAC control element may be transmitted in the first subframe of each scheduling period of the PMCH. The MSI MAC control element may indicate a subframe and a stop frame of each MTCH in the PMCH. There may be one MSI per PMCH per MBSFN area.

A non-standalone carrier is any carrier that is not self-supporting, including carriers that do not have DL and paired UL carriers, or carriers without synchronization / SIB / PBCH signaling. The non-standalone carrier may be a primary carrier (PCC) for any UEs, a new carrier type (NCT) (no SIB / PBCH signaling), a dedicated MBSFN carrier (no synchronization / SIB / PBCH signaling) Or a secondary component carrier (SCC). A non-standalone carrier is a carrier to which UEs can not camp because either synchronization, SIB, and / or PBCH are not transmitted on the carrier, or because the carrier does not have an associated UL carrier. Non-standalone carriers may provide improved spectral efficiency, improved support for heterogeneous networks, and energy efficiency. Non-standalone carriers may be aggregated with legacy LTE carriers. The legacy LTE carrier may also be referred to as a base carrier or PCC. Common reference signals or cell-specific reference signals (CRS) may be transmitted every 5 < th > subframe and transmitted from a single antenna port, only for an enhanced PDCCH (E -PDCCH) may be supported and PDSCH transmissions may be based on demodulation reference signals DM-RS, no control channel common search space may be defined, and no System Information Block (SIB) or paging It may not be transmitted.

Service continuity, introduced in LTE Release 11, allows the UE to start or continue to receive MBMS service (s) over the MBSFN when changing cell (s). The MBMS ancillary information introduced from the network includes (1) a user service description (USD) (USD, for each service, the application / service layer includes TMGI, session start and end time, frequencies belonging to the MBMS service area, Service area identities (SAIs)); And (2) system information (MBMS and non-MBMS cells may represent MBMS SAIs of the current frequency and of each adjacent frequency in SIB 15 (SIB 15) (also referred to as SystemInformationBlockType 15).

The UE may determine the frequency at which the associated eMBMS service is provisioned. When the serving cell provides the SIB 15, the UE determines whether the MBMS service is available for the MBMS service through the MBSFN when one of the MBMS SAI (s) of the frequency as indicated in SIB 15 of the serving cell is displayed for this MBMS service in the USD It may be considered to be doing. The UE at the RRC idle state / mode (also referred to as RRC_IDLE state / mode) sends cells to which the SIB 13 (SIB 13) (also referred to as SystemInformationBlockType 13) It may be considered that the frequency included in the USD for the MBMS service is providing the MBMS service.

Once the UE determines the frequency at which it provides the MBMS services, the UE may prioritize the corresponding frequency for cell reselection when in the RRC idle state, or prioritize the RRC connection state / mode (also the RRC_CONNECTED state / mode (Also referred to as an MBMS interest indication message) when it is in the RRC message MBMSInterestIndication. Existing procedures on service continuity, however, do not address scenarios in which the eMBMS service is provided on a non-standalone carrier but not on a base carrier. More specifically, the UE generally does not know the associated base carrier for the non-standalone carrier and the base carrier provides all the necessary system and MBMS notification information for the UE to receive the eMBMS on the non-standalone carrier, Does not allow the UE to connect to or camp on a corresponding non-standalone carrier having a service of interest to the UE. Therefore, there is a current need to enable service continuity by the reception of eMBMS on non-standing carriers.

In order for a UE to receive an eMBMS on a non-standalone carrier, the UE may need to be able to prioritize the frequencies associated with the base carrier. Once the UE camps on the base carrier, the UE may obtain all the necessary information (e. G., System information and MCCH change notification messages) for eMBMS reception on the non-standalone carrier. In one configuration, the USD may provide session start and end times, frequencies, MBMS SAIs, and TMGI for each service. The frequencies may include a list of base carrier frequencies and / or non-carrier frequency or frequencies. In one configuration, SIB 15 on the base carrier provides MBMS SAIs of the current frequency and of each neighboring frequency. In the case where the frequency belongs to a non-independent carrier frequency in the MBMS service area, an associated base carrier frequency may be additionally provided. The UE may prioritize the base carrier frequency when the SAI of the non-independent carrier frequency as indicated in SIB 15 is displayed in USD. The association between the base carrier and the non-standing carrier may be transmitted in SIB 15 or may be transmitted in some other SIB.

There are some deployment scenarios where the eNB may not broadcast SIB 15 and the UE may only rely on the USD for service continuity. Thus, in order to prepare for a scenario where a cell may not support service continuity, (1) if the frequency belongs to a non-stand-up carrier frequency in the MBMS service area, then the associated base carrier frequency may be additionally provided in USD, And (2) the frequency information of the base carrier and the non-carrier can be made available to the BM-SC via an operations, administration, and maintenance (OAM) entity.

Frequency prioritization may be useful for UEs in the RRC idle state to perform cell reselection. For UEs in the RRC connected state, the UE may indicate the frequency of interest in the MBMS interest indication message. If the UE is interested in MBMS service on a frequency provided on a non-standalone carrier, the UE may indicate either a non-standalone carrier frequency or a base carrier frequency in the MBMS interest indication message. With knowledge of the neighbor frequency association between the non-standing carrier and the base carrier at the eNB, the source cell may then handover the UE to the corresponding target cell accordingly. In one configuration, if the UE is interested in services provided on the associated non-independent carrier, the UE indicates the base carrier frequency. Since the UE may change its interest on other non-standalone carriers associated with the same base carrier, signaling the non-standalone carrier frequency may result in frequent reporting of MBMS interest indications from the UE, .

One non-standing carrier may be attached to multiple base carriers. The SIB 15 or other SIB may represent a list of base carrier frequencies associated with the same non-standing carrier, wherein the base carrier frequency list includes multiple frequencies having respective frequencies associated with each base carrier. Optionally, the USD may provide a list of base carrier frequencies associated with the same non-standing carrier. The UE may prioritize the base carrier or indicate the base carrier with the best unicast measurement.

Design aspects for service continuity have been provided above when the eMBMS is supported on non-standalone carrier frequencies. The USD may provide session start and end times, frequencies, MBMS SAIs, and TMGI for each service. The frequencies may include a base carrier frequency and / or a non-carrier frequency. SIB 15 may provide MBMS SAIs of the current frequency and of each neighboring frequency. If the frequency belongs to a non-stand-up carrier in the MBMS service area, an associated base carrier frequency list may be additionally provided. This association may be added in SIB 15 or may be sent in another SIB. The UE may prioritize the base carrier frequency when the SAI of the non-independent carrier frequency as indicated in SIB 15 is displayed in USD. If more than one base carrier frequency is included in the associated list, the UE may prioritize the base carrier with the best unicast measurement (e.g., highest RSRP and or RSRQ). Alternatively, if more than one base carrier frequency is included in the associated list, the UE may prioritize all base carrier frequencies in the associated list with equal priority. The UE in the RRC idle state may follow an equal priority cell reselection based on unicast measurements as defined in 3GPP TS 36.304. The UE in the RRC connected state may indicate the frequency in the associated list with the best unicast measurements as the preferred frequency. Unicast measurements typically consist of RSRP and / or RSRQ as defined in 3GPP TS 36.214. In order to prepare for a scenario where a cell may not support service continuity, (1) if the frequency belongs to a non-stand-up carrier frequency in the MBMS service area, then an associated base carrier frequency list may be additionally provided in USD If more base carrier frequencies are included in the associated list, the UE may prioritize the base carriers with the best unicast measurement); And (2) frequency information of the base carrier and the non-carrier can be made available to the BM-SC through the OAM entity. UEs in the RRC connected state may signal the associated base carrier frequency instead of the non-independent carrier frequency when the service of interest is provided on a non-independent carrier frequency. If more than one base carrier frequency is included in the associated list for the same non-free carrier, the UE may indicate the base carrier frequency in the associated list with the best unicast measurement.

9 is a diagram 900 illustrating exemplary methods. 9, a network entity (e.g., eNB) 904 may communicate with an available MBMS service, a non-provisional carrier (e.g., NCT, dedicated MBSFN carrier, (Including one PCC frequency 914) to which a non-standalone carrier frequency 916 is attached, and a DL dedicated carrier, or a non-PCC SCC frequency 916 for another UE. Information 908 is received. The network entity sends its information (910) to the UE (902). There are at least four possible scenarios regarding the relationship between the PCC and the non-standalone carrier frequency: (1) when the UE is in the RRC connection state, the non-standalone carrier frequency may be assigned to the UE as the SCC of the PCC; (2) when the UE is in the RRC Connected state, the non-independent carrier frequency may not be assigned to the UE as an SCC and the UE may select a cell of a non-standalone carrier frequency per system information broadcast on the PCC; (3) when the UE is in the RRC idle state, the UE may simultaneously receive PCC and non-standalone carrier frequencies; And (4) when the UE is in an idle state, the non-independent carrier frequency and PCC may share the receiver in a time division multiplex (TDM) (e.g., the non-independent carrier frequency and PCC are time division multiplexed, It would have to be tuned away from one carrier to receive another carrier).

In one configuration, the network entity 904 may receive a preference 912 for one of the one or more PCC frequencies 914 from the UE 902. One PCC frequency 914 and a non-independent carrier frequency 916 are associated with a network entity (eNB) 906, for example. The network entity 904 may handoff the UE 902 to one preferred PCC frequency 914 by the UE 902 (i.e., the UE is handed off to the cell at the preferred frequency). In one configuration, the network entity 904 may receive a preference for the non-standalone carrier frequency 916 from the UE 902. [ The network entity 904 may handoff the UE 902 to a PCC frequency 914 that is attached to the carrier frequency 916. [ The PCC frequency 914 may be one of one or more PCC frequencies. The non-standing carrier frequency 916 may be an NCT, a dedicated MBSFN carrier frequency, a DL exclusive carrier frequency, or an SCC frequency other than the PCC frequency for another UE.

UE 902 receives information 910 that indicates the available MBMS service, the non-standalone carrier frequency 916 provided with available MBMS service, and one or more PCC frequencies to which unoccupied carrier frequency 916 is attached It is possible. The UE 902 selects a preference for one of the one or more PCC frequencies 914 to obtain information for receiving the available MBMS service on the carrier frequency 916. [ UE 902 receives available MBMS services on non-independent carrier frequency 916 based on acquired information 910. [ The non-standing carrier frequency 916 may be an NCT, a dedicated MBSFN carrier frequency, a DL exclusive carrier frequency, or an SCC frequency other than the PCC frequency for another UE. The information 910 may be received in at least one of the USD or SIB (originating from the BM-SC). The SIB may be SIB 15 or another SIB.

The UE 902 may receive the USD. The USD may represent one or more PCC frequencies to which the non-standing carrier frequency 916 is attached. The UE 902 may receive the SIB. The SIB may represent one or more PCC frequencies to which the non-isolated carrier frequency is attached. The UE 902 may receive the SIB. The SIB may represent a plurality of frequencies and one or more PCC frequencies for each of the plurality of frequencies that are non-standalone carrier frequencies. The UE 902 may receive the USD and the SIB. The USD may represent a first SAI associated with the available MBMS service and the SIB may indicate a second SAI associated with the one or more PCC frequencies to which the non-standing carrier frequency 916 and its non-standing carrier frequency 916 are attached It is possible. UE 902 may select a preference for one PCC frequency 914 when the first SAI and the second SAI are the same.

UE 902 may select a preference for one PCC frequency 914 based on unicast measurements when one or more PCC frequencies are greater than one. UE 902 may select a preference for one PCC frequency 914 by prioritizing one or more PCC frequencies with the same priority. UE 902 follows equivalent priority cell reselection criteria based on unicast measurements, as defined in 3GPP TS 36.304, and one PCC frequency 914 is preferred when UE 902 is in the RRC idle state . The UE 902 is configured to transmit an MBMS interest indication message indicating a non-standalone carrier frequency 916 or a PCC frequency 914 when the UE 902 is in an RRC connected state, You can also choose a preference. The MBMS interest indication message may indicate one PCC frequency 914 when the UE 902 is in the RRC connected state.

The service continuity and service discovery concepts described above may also be extended to service continuity and service discovery across MBSFN regions for neighbor cells. In this case, the serving eNB represents the available service area IDs associated with the non-standalone carrier frequency for which the available MBMS service is provided, and one or more cell identities to which the non-standalone carrier frequency is attached. The UE may select a neighbor cell to which the non-independent carrier frequency is attached to receive the MBMS service of interest when the UE is in the RRC idle state. In the RRC connection state, the UE may report the preferred cell identities to which the non-independent carrier frequency is attached to receive the MBMS services of interest.

10 is a flow diagram of a first method of wireless communication. The method may be performed by the UE. At step 1002, the UE receives information indicating which MBMS services are available, the non-stand-up carrier frequency to which the available MBMS service is provided, and one or more PCC frequencies to which the non-stand-up carrier frequency is attached. The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE. At step 1002, the information may be received in the USD or SIB. In one example, information is received at SIB 15. In one example, at step 1002, the UE receives USD and the USD represents one or more PCC frequencies to which the non-carrier frequency is attached. In another example, at step 1002, the UE receives the SIB, and the SIB represents one or more PCC frequencies to which the non-standalone carrier frequency is attached. In another example, at step 1002, the UE receives the SIB, and the SIB represents one or more PCC frequencies for each of the plurality of frequencies that are non-standalone carrier frequencies. In another example, at step 1002, the UE receives the USD and the SIB. The USD may represent a first SAI associated with an available MBMS service and the SIB may represent a second SAI associated with one or more PCC frequencies to which the non-standalone carrier frequency and its non-standalone carrier frequency are attached. The UE may select a preference for one PCC frequency when the first SAI and the second SAI are the same. In step 1004, the UE selects a preference for one of the one or more PCC frequencies to obtain information for receiving available MBMS services on the non-independent carrier frequency. In one example, at step 1004, the UE may select a preference for one PCC frequency based on unicast measurements when one or more PCC frequencies are greater than one. In one example, in step 1004, when the UE is in the RRC idle state, the UE may select a preference for that one PCC frequency by prioritizing one PCC frequency. In one example, in step 1004, the UE selects a preference for one PCC frequency by sending an MBMS interest indication message indicating a non-standalone carrier frequency or one PCC frequency when the UE is in the RRC connection state It is possible. When the UE is in the RRC connection state, the MBMS interest indication message may indicate one PCC frequency. At step 1006, the UE receives available MBMS services on a non-independent carrier frequency based on the obtained information.

11 is a flow diagram of a second method of wireless communication. The method may be performed by a network entity such as an eNB. At step 1102, the network entity receives information indicating which MBMS services are available, the non-standalone carrier frequency for which the available MBMS service is provided, and one or more PCC frequencies to which the non-standalone carrier frequency is attached. The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE. At step 1104, the network entity sends its information to the UE. At step 1106, the network entity receives a preference for one PCC frequency of one or more PCC frequencies from the UE or a preference for a non-standalone carrier frequency from the UE. At step 1108, the network entity handoffs the UE to one PCC frequency preferred by the UE or to a PCC frequency that is attached to the non-independent carrier frequency. The PCC frequency is one of one or more PCC frequencies.

12 is a conceptual data flow diagram 1200 illustrating the flow of data between different modules / means / components in an exemplary apparatus 1202. The device may be a UE. The apparatus includes a receiving module 1204 configured to receive information indicating an available MBMS service, an unattended carrier frequency for which available MBMS services are provided, and one or more PCC frequencies to which unlisted carrier frequencies are attached. The receiving module 1204 may be configured to provide the received information to the MBMS module 1208. [ Receiving module 1204 may receive information from first cell 1250. [ The apparatus further includes a preference selection module (1206) configured to select preferences for one of the one or more PCC frequencies to obtain information for receiving available MBMS services on the non-independent carrier frequency. Receiving module 1204 is further configured to receive available MBMS services on a non-independent carrier frequency based on the obtained information. The receiving module 1204 may be configured to provide available MBMS services to the MBMS module 1208. Receiving module 1204 may also receive an available MBMS service from second cell 1260. The first and second cells 1250 and 1260 may be associated with the same or different eNBs.

The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE. Information may be received in USD or SIB. The receiving module 1204 may provide the USD / SIB to the MBMS module 1208. The SIB from which information is received may be SIB 15. Receive module 1204 may be configured to receive a USD where the USD represents one or more PCC frequencies to which the non-carrier frequency is attached. Receive module 1204 may be configured to receive SIBs in which the SIB indicates one or more PCC frequencies to which the non-standalone carrier frequency is attached. Receive module 1204 may be configured to receive an SIB that indicates one or more PCC frequencies for each of the plurality of frequencies where the SIB is a plurality of frequencies and non-standalone carrier frequencies. Receiving module 1204 may be configured to receive USD and SIB. In this configuration, the USD represents the first SAI associated with the available MBMS service, and the SIB represents the second SAI associated with the non-standalone carrier frequency and one or more PCC frequencies to which the non-standalone carrier frequency is attached. In addition, the preference selection module 1206 is configured to select a preference for one PCC frequency when the first SAI and the second SAI are the same. The preference selection module 1206 may be configured to select a preference for one PCC frequency based on unicast measurements when one or more PCC frequencies are greater than one. The preference selection module 1206 may be configured to select a preference for that one PCC frequency by prioritizing one PCC frequency when the UE is in the RRC idle state. The preference selection module 1206 may be configured to select a preference for one PCC frequency by sending an MBMS interest indication message indicating a non-standalone carrier frequency or one PCC frequency when the UE is in the RRC connection state. When the UE is in the RRC connection state, the MBMS interest indication message may indicate one PCC frequency.

The apparatus may include additional modules that perform each of the steps of the algorithm in the above-described flowchart of Fig. As such, each step in the above-described flowchart of FIG. 10 may be performed by a module, and the apparatus may include one or more of those modules. The modules may be one or more hardware components that are specifically configured to perform the described processes / algorithms, and may be implemented by a processor configured to perform the described processes / algorithms, and may be implemented as a computer readable May be stored in the medium, or some combination thereof.

13 is a diagram 1300 illustrating an example of a hardware implementation for an apparatus 1202 ' employing a processing system 1314. [ Processing system 1314 may be implemented with a bus architecture, represented generally by bus 1324. [ Bus 1324 may include any number of interconnect busses and bridges in accordance with the particular application of the processing system 1314 and overall design constraints. Bus 1324 may be any of a variety of types including one or more processors and / or hardware modules represented by processor 1304, modules 1204, 1206, 1208 and 1210 and computer readable medium / Link circuits together. The bus 1324 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, I will not.

The processing system 1314 may be coupled to the transceiver 1310. Transceiver 1310 is coupled to one or more antennas 1320. Transceiver 1310 provides a means for communicating with various other devices via a transmission medium. The transceiver 1310 receives signals from one or more antennas 1320, extracts information from the received signals, and provides the extracted information to the processing system 1314. Transceiver 1310 also receives information from processing system 1314 and generates a signal to be applied to one or more antennas 1320 based on the received information. The processing system 1314 includes a processor 1304 coupled to the computer readable medium / memory 1306. Processor 1304 is responsible for general processing, including the execution of software stored on computer readable media / memory 1306. The software, when executed by the processor 1304, causes the processing system 1314 to perform the various functions described above for any particular device. Computer readable medium / memory 1306 may also be used to store data operated by processor 1304 when executing software. The processing system further includes at least one of modules 1204, 1206, 1208, and 1210. The modules may be software modules running on processor 1304 and resident / stored in computer readable medium / memory 1306, one or more hardware modules coupled to processor 1304, or some combination thereof . The processing system 1314 may be a component of the UE 120 and may include at least one of a memory 682 and / or a TX processor 664, an RX processor 658, and a controller / processor 680 .

In one arrangement, a device 1202 or 1202 'for wireless communication may be configured to communicate with an available MBMS service, an unoccupied carrier frequency provided above the available MBMS service, and one or more PCC frequencies Lt; / RTI > The apparatus further comprises means for selecting a preference for one of the one or more PCC frequencies to obtain information for receiving an available MBMS service on a non-independent carrier frequency. The apparatus further comprises means for receiving an available MBMS service on a non-independent carrier frequency based on the obtained information.

The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE. The information may be received in at least one of USD or SIB. The SIB may be SIB15. In one configuration, the apparatus further comprises means for receiving the USD, wherein the USD represents one or more PCC frequencies to which the non-standalone carrier frequency is attached. In one configuration, the apparatus further comprises means for receiving the SIB, wherein the SIB represents one or more PCC frequencies to which the non-standalone carrier frequency is attached. In one configuration, the apparatus further comprises means for receiving the SIB, wherein the SIB represents one or more PCC frequencies for each of the plurality of frequencies that are non-standalone carrier frequencies. In one configuration, the apparatus further comprises means for receiving USD and SIB. In this configuration, USD represents the first SAI associated with the available MBMS service, SIB represents the second SAI associated with the non-standalone carrier frequency and one or more PCC frequencies to which the non-standalone carrier frequency is attached, and the first SAI And the preference for one PCC frequency is selected when the second SAI is the same. In one configuration, the means for selecting a preference for one PCC frequency is configured to select a preference for one PCC frequency based on unicast measurements when the one or more PCC frequencies are greater than one. In one configuration, the means for selecting a preference for one PCC frequency is configured to prioritize one PCC frequency when the UE is in the RRC idle state. In one configuration, the means for selecting a preference for one PCC frequency is configured to transmit an MBMS interest indication message indicating one PCC frequency or a non-standalone carrier frequency when the UE is in the RRC connection state. The MBMS interest indication message may indicate one PCC frequency when the UE is in the RRC connection state.

The foregoing means may be one or more of the aforementioned modules of the processing system 1314 and / or the device 1202 of the device 1202 'configured to perform the functions cited by the means described above. As described above, the processing system 1314 may include a TX processor 664, an RX processor 658, and a controller / processor 680. As such, in one configuration, the means described above may be a TX processor 664, an RX processor 658, and a controller / processor 680 configured to perform the functions cited by the means described above.

14 is a conceptual data flow diagram 1400 that illustrates the flow of data between different modules / means / components in the exemplary device 1402. FIG. The device may be a network entity (eNB, for example). The apparatus includes a receiving module 1404 configured to receive information indicating an available MBMS service, an unoccupied carrier frequency provided above the available MBMS service, and one or more PCC frequencies to which the unoccupied carrier frequency is attached . The information or a subset thereof (e.g., USD) may be received from the BM-SC 1440. The receiving module 1404 is configured to provide the received information to the MBMS module 1408. [ The apparatus further includes a transmission module 1410 that is configured to receive information from the MBMS module 1408 and to transmit information to the UE 1450.

Receive module 1404 may be configured to receive preferences for one of the one or more PCC frequencies from the UE. The apparatus may further comprise a handoff module 1406 configured to handoff the UE to one PCC frequency preferred by the UE. Receive module 1404 may be configured to receive preferences for non-independent carrier frequencies from the UE. The handoff module 1406 may be configured to handoff the UE to the PCC frequency attached to the non-independent carrier frequency. The PCC frequency is one of one or more PCC frequencies. The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE.

The device may include additional modules that perform each of the steps of the algorithm in the above-described flow chart of Fig. As such, each step in the above-described flowchart of FIG. 11 may be performed by a module, and the apparatus may include one or more of those modules. The modules may be one or more hardware components that are specifically configured to perform the described processes / algorithms, and may be implemented by a processor configured to perform the described processes / algorithms, and may be implemented as a computer readable May be stored in the medium, or some combination thereof.

FIG. 15 is a diagram 1500 illustrating an example of a hardware implementation for an apparatus 1402 'employing a processing system 1514. The processing system 1514 may be implemented with a bus architecture, represented generally by bus 1524. [ The bus 1524 may include any number of interconnect busses and bridges in accordance with the particular application of the processing system 1514 and overall design constraints. Bus 1524 may be implemented in various ways including one or more processors and / or hardware modules represented by processor 1504, modules 1404, 1406, 1408 and 1410 and computer readable medium / memory 1506 Link circuits together. The bus 1524 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art, I will not.

Processing system 1514 may be coupled to transceiver 1510. Transceiver 1510 is coupled to one or more antennas 1520. Transceiver 1510 provides a means for communicating with various other devices via a transmission medium. The transceiver 1510 receives signals from one or more antennas 1520, extracts information from the received signals, and provides the extracted information to the processing system 1514. Transceiver 1510 also receives information from processing system 1514 and generates a signal to be applied to one or more antennas 1520 based on the received information. The processing system 1514 includes a processor 1504 coupled to a computer readable medium / memory 1506. Processor 1504 is responsible for general processing, including execution of software stored on computer readable medium / memory 1506. The software, when executed by the processor 1504, causes the processing system 1514 to perform the various functions described above for any particular device. Computer readable medium / memory 1506 may also be used to store data operated by processor 1504 when executing software. The processing system further includes at least one of modules 1404, 1406, 1408, and 1410. The modules may be software modules running on processor 1504 and resident / stored in computer readable medium / memory 1506, one or more hardware modules coupled to processor 1504, or some combination thereof . Processing system 1514 may be a component of eNB 110 and may include at least one of memory 642 and / or TX processor 620, RX processor 638, and controller / processor 640 .

In one configuration, a device 1402/1402 'for wireless communication may be configured to communicate with one or more PCC frequencies (e.g., one or more PCC frequencies) to which an available MBMS service, an available MBMS service, Lt; / RTI > The apparatus further comprises means for transmitting information to the UE. The apparatus may further comprise means for receiving a preference for one of the one or more PCC frequencies from the UE. The apparatus may further comprise means for handing off the UE with one PCC frequency preferred by the UE. The apparatus may further comprise means for receiving a preference for a non-independent carrier frequency from the UE. The apparatus may further comprise means for handing off the UE with a PCC frequency that is appended to the carrier frequency, the PCC frequency being one of one or more PCC frequencies. The non-standing carrier frequency may be an NCT, a dedicated MBSFN carrier frequency, a DL dedicated carrier frequency, or an SCC frequency other than the PCC frequency for another UE.

The foregoing means may be one or more of the above described modules of the processing system 1514 and / or the device 1402 of the device 1402 'configured to perform the functions cited by the means described above. As described above, the processing system 1514 may include a TX processor 620, an RX processor 638, and a controller / processor 640. As such, in one arrangement, the means described above may be a TX processor 620, an RX processor 638, and a controller / processor 640 configured to perform the functions cited by the means described above.

It will be appreciated by those of ordinary skill in the art that information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may refer to voltages, currents, electromagnetic waves, magnetic fields, , Optical systems or optical particles, or any combination thereof.

In addition, the ordinary artisan will appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both . In order to clearly illustrate this alternative possibility of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. The ordinary skilled artisan may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

The various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array Programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

The steps of a method or algorithm described in connection with the disclosure herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art have. An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium. Alternatively, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. Alternatively, the processor and the storage medium may reside as discrete components in a user terminal.

In one or more exemplary designs, the functions described may be implemented in hardware, software, firmware, or any combination thereof. When implemented in software, the functions may be stored or transmitted on a computer readable medium as one or more instructions or code. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. The storage medium may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, Or any other medium which can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor. Also, any connector is properly referred to as a computer-readable medium. When software is transmitted from a web site, server, or other remote source using, for example, wireless technologies such as coaxial cable, fiber optic cable, twisted pair cable, digital subscriber line (DSL), or infrared, Wireless technologies such as coaxial cable, fiber optic cable, twisted pair cable, DSL, or infrared, radio, and microwave are included in the definition of the medium. Disks and discs as used herein include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disc and Blu-ray disc, disk typically reproduces data magnetically, while a disc optically reproduces data using lasers. Combinations of the above should also be included within the scope of computer readable media.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those of ordinary skill in the art, and the generic principles defined herein may be applied to other modifications without departing from the spirit or scope of the disclosure. Accordingly, the present disclosure is not intended to be limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (40)

A method of wireless communication of a user equipment (UE)
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached 0.0 > (PCC) < / RTI >frequencies;
Selecting a preference for one of the one or more PCC frequencies to obtain information for receiving the available MBMS service on the non-independent carrier frequency; And
And receiving the available MBMS service on the non-independent carrier frequency based on the obtained information. The method according to claim 1,
Wherein the non-independent carrier frequency is selected from the group consisting of a new carrier type (NCT) carrier frequency, a dedicated multicast broadcast single frequency network (MBSFN) carrier frequency, a downlink dedicated carrier frequency, And a secondary component carrier frequency. The method according to claim 1,
Wherein the information is received in at least one of a user service description (USD) or a system information block (SIB). The method of claim 3,
Wherein the SIB is SIB 15 (SIB 15). The method of claim 3,
Further comprising receiving the user service description (USD), wherein the USD represents the one or more PCC frequencies to which the non-standalone carrier frequency is attached. The method of claim 3,
Further comprising receiving the SIB, wherein the SIB indicates the one or more PCC frequencies to which the non-standing carrier frequency is attached. The method of claim 3,
Further comprising receiving the SIB, wherein the SIB represents one or more PCC frequencies for each of the plurality of frequencies that are a plurality of frequencies and non-standalone carrier frequencies. The method of claim 3,
Further comprising receiving the USD and the SIB, wherein the USD represents a first service area identity (SAI) associated with the available MBMS service, and wherein the SIB is configured to receive the one or more PCC frequencies and a second SAI associated with the non-standalone carrier frequency, wherein the preference for the one PCC frequency is selected when the first SAI and the second SAI are the same. The method according to claim 1,
Wherein selecting a preference for the one PCC frequency is based on unicast measurements when the one or more PCC frequencies are greater than one. The method according to claim 1,
Wherein selecting a preference for the one PCC frequency comprises prioritizing the one PCC frequency when the UE is in a radio resource control (RRC) idle state. The method according to claim 1,
Wherein the step of selecting a preference for one PCC frequency comprises transmitting an MBMS interest indication message indicating the one PCC frequency or the non-independent carrier frequency when the UE is in a radio resource control (RRC) And the wireless communication method of the user equipment. 12. The method of claim 11,
Wherein the MBMS interest indication message indicates the one PCC frequency when the UE is in an RRC connection state. A wireless communication method of a network entity,
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached 0.0 > (PCC) < / RTI >frequencies; And
And transmitting the information to a user equipment (UE). 14. The method of claim 13,
Further comprising receiving from the UE a preference for one of the one or more PCC frequencies. 15. The method of claim 14,
Further comprising: handing off the UE at the one PCC frequency preferred by the UE. 14. The method of claim 13,
Further comprising receiving a preference for the non-independent carrier frequency from the UE. 17. The method of claim 16,
Further comprising: handing off the UE at a PCC frequency attached to the non-independent carrier frequency, wherein the PCC frequency attached to the non-standalone carrier frequency is one of the one or more PCC frequencies, Communication method. 14. The method of claim 13,
Wherein the non-independent carrier frequency is selected from the group consisting of a new carrier type (NCT) carrier frequency, a dedicated multicast broadcast single frequency network (MBSFN) carrier frequency, a downlink dedicated carrier frequency, Wherein the secondary component is a secondary component carrier frequency. An apparatus for wireless communication that is a user equipment (UE)
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached Means for receiving information indicative of PCC frequencies;
Means for selecting a preference for one of the one or more PCC frequencies to obtain information for receiving the available MBMS service on the non-independent carrier frequency; And
And means for receiving the available MBMS service on the non-independent carrier frequency based on the obtained information. 20. The method of claim 19,
Wherein the non-independent carrier frequency is selected from the group consisting of a new carrier type (NCT) carrier frequency, a dedicated multicast broadcast single frequency network (MBSFN) carrier frequency, a downlink dedicated carrier frequency, A device for wireless communication that is a user equipment, which is a secondary component carrier frequency. 20. The method of claim 19,
Wherein the information is received in at least one of a user service description (USD) or a system information block (SIB). 22. The method of claim 21,
Wherein the SIB is SIB 15 (SIB 15). 22. The method of claim 21,
Further comprising means for receiving the user service description (USD), wherein the USD indicates the one or more PCC frequencies to which the non-standalone carrier frequency is attached. 22. The method of claim 21,
And means for receiving the SIB, wherein the SIB represents the one or more PCC frequencies to which the non-stand-up carrier frequency is attached. 22. The method of claim 21,
And means for receiving the SIB, wherein the SIB is one of a plurality of frequencies and one or more PCC frequencies for each of the plurality of frequencies that are non-standalone carrier frequencies. 22. The method of claim 21,
Further comprising means for receiving the USD and the SIB, wherein the USD represents a first service area identity (SAI) associated with the available MBMS service, and wherein the SIB is configured to receive the one or more Wherein the preference for one PCC frequency is selected when the first SAI and the second SAI are the same, wherein the preference for the one PCC frequency is selected for the wireless communication being user equipment Device. 20. The method of claim 19,
Wherein the means for selecting a preference for one PCC frequency is configured to select a preference for the one PCC frequency based on unicast measurements when the one or more PCC frequencies are greater than one, Apparatus for communication. 20. The method of claim 19,
Wherein the means for selecting a preference for one PCC frequency is configured to prioritize the one PCC frequency when the UE is in a radio resource control (RRC) idle state. 20. The method of claim 19,
Wherein the means for selecting a preference for one PCC frequency is configured to send an MBMS interest indication message indicating the one PCC frequency or the non-independent carrier frequency when the UE is in a radio resource control (RRC) , A device for wireless communication that is a user equipment. 30. The method of claim 29,
Wherein the MBMS Concordance Indication message indicates the one PCC frequency when the UE is in the RRC Connected state. 1. An apparatus for wireless communication that is a network entity,
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached Means for receiving information indicative of PCC frequencies; And
And means for transmitting the information to a user equipment (UE). 32. The method of claim 31,
Further comprising means for receiving a preference for one of the one or more PCC frequencies from the UE. 33. The method of claim 32,
Further comprising means for handing off the UE at the one PCC frequency preferred by the UE. 32. The method of claim 31,
And means for receiving a preference for the non-independent carrier frequency from the UE. 35. The method of claim 34,
Further comprising means for handing off the UE at a PCC frequency attached to the non-independent carrier frequency, wherein the PCC frequency attached to the non-standalone carrier frequency is one of the one or more PCC frequencies, Apparatus for communication. 32. The method of claim 31,
Wherein the non-independent carrier frequency is selected from the group consisting of a new carrier type (NCT) carrier frequency, a dedicated multicast broadcast single frequency network (MBSFN) carrier frequency, a downlink dedicated carrier frequency, A device for wireless communication that is a network entity that is a secondary component carrier frequency. An apparatus for wireless communication that is a user equipment (UE)
The apparatus comprising at least one processor,
Wherein the at least one processor comprises:
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached PCC) frequencies;
Select a preference for one of the one or more PCC frequencies to obtain information for receiving the available MBMS service on the non-independent carrier frequency; And
And to receive the available MBMS service on the non-independent carrier frequency based on the obtained information
Wherein the device is a user equipment. 1. An apparatus for wireless communication that is a network entity,
The apparatus comprising at least one processor,
Wherein the at least one processor comprises:
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached PCC) frequencies; And
To send the information to the user equipment (UE)
≪ / RTI > wherein the network entity is a network entity. 11. A computer program product in a user equipment (UE)
The computer program product comprising a computer readable medium,
The computer-
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached Code for receiving information representative of PCC frequencies;
Code for selecting a preference for one of the one or more PCC frequencies to obtain information for receiving the available MBMS service on the non-independent carrier frequency; And
And code for receiving the available MBMS service on the non-independent carrier frequency based on the obtained information. A computer program product in a network entity,
The computer program product comprising a computer readable medium,
The computer-
(MBMS) service, an available non-self-standing carrier frequency at which the available MBMS service is provided, and at least one primary component carrier to which the non-independent carrier frequency is attached Code for receiving information representative of PCC frequencies; And
And code for transmitting the information to a user equipment (UE).

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