Method and apparatus for wireless communication using cross-band carriers

Abstract

Methods, systems, and apparatus for wireless communications are described. A method of wireless communications performed by a user equipment (UE) in communication with a base station includes: receiving information indicating a plurality of candidate uplink component carriers in a non-mmW (millimeter wave) spectrum, each of the plurality of candidate uplink component carriers being available for association with a particular downlink component carrier; in response to receiving the information indicating the plurality of candidate uplink component carriers, selecting at least a primary uplink component carrier from the plurality of candidate uplink component carriers; and transmitting a signal to the base station using the primary uplink component carrier.

Description

[0001] This divisional application is a divisional application of a PCT national phase patent application with a PCT international filing date of September 21, 2018, national application number 201880061695.0, and titled “Method and Apparatus for Wireless Communications Using Cross-Band Carriers”. Technical Field

[0002] The following relates generally to wireless communications, and more particularly to uplink and downlink cross-band carriers. Background Art

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, and orthogonal frequency division multiple access (OFDMA) systems. A wireless multiple access communication system may include several base stations, each of which supports communication for multiple communication devices simultaneously. Communication devices that vary from user to user are referred to as user equipment (UE).

[0004] In order to provide more and better wireless services, the use of spectrum in higher frequencies is being explored. For example, portions of the millimeter wave (mmW) spectrum (extending from 30 GHz to 300 GHz) are being considered for telecommunication applications.

[0005] The use of non-mmW spectrum may be restricted due to government regulations or other agreements. For example, different parts of the electromagnetic spectrum may be subject to licensing by a government entity. Spectrum licenses may be exclusive, or the spectrum may be shared. Additionally, some aspects of telecommunications equipment may be subject to safety regulations. For example, some regulations impose limits on the amount of transmit power or other characteristics. Summary of the invention

[0006] Methods, systems, and devices for wireless communications are described. The technology allows different configurations of uplink and downlink carriers; for example, in a system where the downlink signal is in the mmW portion of the electromagnetic spectrum while the uplink signal may be in a non-mmW band.

[0007] In general, in one aspect, a method of wireless communication performed by a user equipment (UE) in communication with a base station includes receiving information indicating a plurality of candidate uplink component carriers in a non-mmW spectrum, each of the plurality of candidate uplink component carriers being available for association with a particular downlink component carrier in the mmW spectrum. In response to receiving the information indicating the plurality of candidate uplink component carriers, the UE may select at least a primary uplink component carrier from the plurality of candidate uplink component carriers. The UE may transmit a signal to the base station using the primary uplink component carrier.

[0008] The information indicating the plurality of candidate uplink component carriers in the non-mmW spectrum may include at least frequency information, such as center frequencies of the candidate uplink component carriers, and one or more random access channel (RACH) parameters for each candidate uplink component carrier.

[0009] The UE may select at least a primary uplink component carrier from a plurality of candidate uplink component carriers by determining that the UE supports a set of S candidate uplink component carriers (wherein there are T candidate uplink component carriers). If all candidate carriers are supported, S=T. If S>1, the primary uplink component carrier may be selected from the S supported candidate uplink component carriers based on one or more uplink communication parameters. The communication parameters include UE compatibility with each of the candidate uplink component carriers, the current load level of each of the S supported candidate uplink component carriers, the expected load level of each of the S supported candidate uplink component carriers, and the current priority of each of the S supported candidate uplink component carriers. The UE may select at least one secondary uplink component carrier from the candidate uplink component carriers. In some implementations, the UE receives a configuration of one or more secondary uplink component carriers from a base station.

[0010] The UE transmits a capability report to the base station, wherein the capability report may include UE uplink carrier capability information. The UE may transmit control signaling and data to the base station using the primary uplink component carrier, and transmit data to the base station using the one or more secondary uplink component carriers, although in some implementations, the UE uses the secondary uplink component carrier to transmit some control information in addition to data. The control signaling may include downlink hybrid automatic repeat request (HARQ) information, channel state information (CSI), scheduling request (SR) information, and random access channel (RACH) information.

[0011] In general, a method of wireless communication performed by a base station in communication with a user equipment (UE) includes transmitting information indicating a plurality of candidate non-mmW uplink component carriers to be paired with a particular downlink mmW component carrier. The base station receives an indication of a preferred uplink component carrier of the plurality of candidate uplink component carriers from the UE, selects the preferred uplink component carrier or a different uplink component carrier as an initial primary uplink component carrier for the UE, and configures the UE with the initial primary uplink component carrier.

[0012] The base station may select a different uplink component carrier instead of the preferred uplink component carrier as the initial primary uplink component carrier based on system parameters such as the relative loads of the different uplink component carriers and the preferred uplink component carrier. For example, if the load of the preferred primary uplink component carrier is greater than the load of the different primary uplink component carrier by more than a threshold amount, the base station may select a different primary uplink component carrier to improve load balancing.

[0013] Aspects generally include methods, apparatus, systems, computer program products, and processing systems substantially as described herein with reference to and as illustrated by the accompanying figures.

[0014] After studying the description of the specific exemplary aspects of the present invention below in conjunction with the accompanying drawings, other aspects, features and embodiments of the present invention will be apparent to those of ordinary skill in the art. Although features of the present disclosure may be discussed below with respect to certain aspects and the accompanying drawings, all embodiments of the present disclosure may include one or more of the advantageous features discussed herein. In other words, although one or more aspects may be discussed as having certain advantageous features, one or more of such features may also be used according to the various aspects of the present disclosure discussed herein. In a similar manner, although exemplary aspects may be discussed below as devices, systems, or methods, it should be understood that such exemplary aspects may be implemented in various devices, systems, and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 illustrates an example of a wireless communication system according to some implementations;

[0016] Figure 2A illustrates examples of wireless devices according to some implementations;

[0017] Figure 2B illustrates examples of base stations according to some implementations;

[0018] Figure 3 An example method for a UE according to some implementations is illustrated;

[0019] Figure 4An example method for a UE according to some implementations is illustrated;

[0020] Figure 5 illustrates example methods for a base station according to some implementations; and

[0021] Figure 6

[0013] Example methods for a base station according to some implementations are illustrated. DETAILED DESCRIPTION

[0022] While expanding telecommunications to new frequency regimes can bring many benefits, new frequency bands, such as those associated with the millimeter wave portion of the electromagnetic spectrum, present new challenges for devices and protocols.

[0023] One issue that may arise with the new spectrum is the intersection of regulations and technology. For example, in the United States, some types of wireless devices need to comply with maximum permissible exposure (MPE) limits. Depending on their use and configuration, some UEs can ensure compliance with MPE limits by using non-mmW carriers in the uplink (transmissions from the UE to the network entity) and exclusively using mmW bands in the downlink (transmissions from network entities (such as base stations) to the UE). Other UEs may be designed to selectively use mmW or non-mmW transmissions on the uplink. Devices that are not typically close to the user's body, such as some customer premises equipment (CPE), may be designed to use mmW spectrum for both uplink and downlink communications.

[0024] The systems and techniques herein use cross-band pairing of a downlink mmW carrier with one or more non-mmW uplink carriers. Uplink carrier frequencies less than 10 GHz may be used; in particular, sub-6 GHz bands may mitigate regulatory issues and are compatible with many UE designs. Examples of sub-6 GHz bands are 3.4-3.8 GHz, 3.8-4.2 GHz, and 4.4-4.9 GHz. Although the use of sub-6 GHz bands on the uplink may be beneficial, some aspects of using sub-6 GHz bands may present challenges. For example, although current 5G NR (new radio) supports up to 100 MHz carrier width in the sub-6 GHz band, contiguous allocations may not be available because the sub-6 GHz band may be segmented (the available spectrum may not be in a single contiguous band, but may consist of smaller portions of the spectrum). There are many reasons why the available spectrum may be segmented.

[0025] For licensed bands, a licensee may not be able to access contiguous allocations in the spectrum, e.g., a licensee may have one allocation in one portion of the band and another allocation in a different portion of the band that is not contiguous with the first portion (or in a different band). For unlicensed portions of non-mmW spectrum, media sharing may result in nodes having access to non-contiguous uplink spectrum. For shared portions of non-mmW spectrum, protection of existing incumbents (prior users with priority rights to the shared spectrum, such as government entities) may result in nodes having access to non-contiguous uplink spectrum.

[0026] In the current version of the 3GPP (3rd Generation Partnership Project) specifications, a UE cannot be configured with more uplink component carriers than downlink component carriers. In order to provide efficient and compliant communications when different spectrums are used on the uplink and downlink, the systems and techniques for cross-band pairing described herein allow a non-mmW primary uplink component carrier and (optionally) one or more secondary uplink component carriers to be paired with a specific mmW downlink carrier. In this document, the phrase "component carrier" refers to a single carrier or one of multiple carriers used for carrier aggregation implementation, and cross-band pairing refers to the association of one or more uplink carriers in a non-mmW band (e.g., one or more sub-6 GHz bands) paired with a single downlink carrier in a different spectrum band (e.g., mmW band).

[0027] Some aspects that affect cross-band pairing are band availability, band usage characteristics, and UE capabilities. As explained above, different telecommunication service providers may have limited available spectrum due to segmentation. Even when a service provider is able to access specific portions of the spectrum, characteristics such as load may make some portions more or less suitable for specific communications. Additionally, different UEs may also have different capabilities for supporting communications in different frequency systems. For example, a service provider may include a first spectrum allocation with a first center frequency and a second spectrum allocation with a second, higher center frequency in a sub-6 GHz spectrum, but the UE may only be able to support communications in the first spectrum allocation with a lower center frequency.

[0028] In some implementations, the cross-band pairing process may be primarily managed by the base station, while in other implementations, the UE may perform some or all of the management. Examples of these implementations are described below with reference to the accompanying drawings.

[0029] refer to Figure 1The example system 100 of describes systems and techniques for cross-band pairing. The wireless communication system 100 includes a base station 105, a user equipment (UE) 115 (including UE 115a and UE 115b), a CPE 116, and a core network 130. UE 115 may also be referred to as a mobile station, a subscriber station, a remote unit, a wireless device, an access terminal (AT), a handset, a user agent, a client, or similar terms. UE 115 may also be a cellular phone, a wireless modem, a handheld device, a personal computer, a tablet device, a personal electronic device, a machine type communication (MTC) device, etc. In some examples, the wireless communication system 100 may be a long term evolution (LTE) / advanced LTE (LTE-A) network, a 5G network, or a network providing services with a combination of protocols.

[0030] exist Figure 1 In the example of , UE 115a is configured to use communications with base station 105. Each mmW downlink component carrier is paired with at least a primary uplink component carrier in one or more uplink carriers. UE 115a is configured to exclusively use a non-mmW carrier on the uplink. Conversely, UE 115b is configured to selectively use a non-mmW carrier in the uplink or a mmW carrier in the uplink paired with a received signal on the mmW downlink carrier. CPE 116 is configured to pair the uplink mmW signal with the downlink mmW signal.

[0031] Each base station 105 can communicate with the core network 130 and with each other. For example, the base station 105 can be connected to the core network 130 via a backhaul link 132 (e.g., S1, etc.). The base station 105 can communicate with each other directly or indirectly (e.g., through the core network 130) on a backhaul link 134 (e.g., X2, etc.). The base station 105 can perform radio configuration and scheduling for communication with UE 115a and UE 115b and CPE 116, or can operate under the control of a base station controller (not shown). In some examples, the base station 105 can be a macro cell, a small cell, a hotspot, etc. The base station 105 can also be referred to as an evolved B node (eNB) or a g B node (gNB) 105.

[0032] Figure 2AA simplified diagram of an example UE 115, referred to as UE 215, is shown. UE 215 includes antenna circuitry 230 and transceiver circuitry 225. Transceiver circuitry 225 includes receive circuitry with one or more receive (Rx) chains 227 having RF components, such as amplifiers, analog-to-digital converters, mixers, oscillators, filters, etc., to process received downlink signals and transmit circuitry with one or more transmit (TX) chains 228 including RF components to generate signals to be transmitted on the uplink. The characteristics of the transceiver circuitry 225 of UE 215 may affect its ability to support a particular uplink or downlink component carrier. UE 215 may support the entire available uplink non-mmW spectrum, or may support only a portion of the spectrum. For example, a particular UE design may have a transmit chain 228 that may support uplink signals in a first sub-6 GHz band but not in a second sub-6 GHz band, or may support a portion of a particular band but not all. Similarly, receive chain(s) 227 may support the entire width or a portion of the downlink mmW spectrum.

[0033] UE 215 includes processor circuitry 220 and memory circuitry 240. Processor circuitry 220 and memory circuitry 240 are shown as discrete blocks, but may be implemented in a variety of ways; for example, processor circuitry may be implemented in one or more dedicated areas of a chip or in a different chip. Similarly, memory circuitry 240 may be implemented as main memory with or without the addition of other portions of the memory circuitry on the same or a different chip. For communications in the mmW spectrum, antenna circuitry 230 works with processor circuitry 220 and memory circuitry 240 to implement beam-related techniques such as beam scanning and management for communicating with one or more base stations such as base station 105. Note that "processor circuitry" and "processor" are used herein to refer to structures.

[0034] UE 215 may store the capability information in memory circuitry 240 as part of stored data and instructions 245. The UE capability information may indicate support for communications using a particular frequency. In operation, UE 215 performs the techniques described below to implement cross-band pairing. For example, UE 215 may use antenna circuitry 230 and receive circuitry including receive chain(s) 227 of transceiver circuitry 225 to receive a signal including information of a plurality of candidate uplink component carriers, as described below. Figure 32. The information may be stored in memory circuitry 240 for access and processing using processor circuitry 220. For example, processor circuitry 220 may select a preferred primary uplink component carrier and (optionally) one or more preferred secondary uplink component carriers using the techniques outlined below. Processor circuitry 220 may generate a message including a capability report and may sometimes generate a message indicating a preference for a different (updated) primary and / or secondary uplink component carrier. As described more fully below and with reference to Figure 4 In other described implementations, UE 215 may use antenna circuitry 230 and receive circuitry including receive chain(s) 227 of transceiver circuitry 225 to receive a signal including an initially configured primary uplink component carrier, while processor circuitry 220 generates a message including a capability report and other aspects described below.

[0035] Figure 2B A simplified diagram of an example base station 205 is shown. Base station 205 may include processor circuitry 226, memory circuitry 249, antenna circuitry 235, and transceiver circuitry 229. As described above, base station 205 may engage in communications with UEs such as UE 115a and UE 115b over multiple component carriers using associated cells. Herein, the term "cell" is used to refer to structures such as data and instructions 247 stored on memory circuitry 249 to generate signal information when executed by processor circuitry 226, and transceiver circuitry 229 and antenna circuitry 235 to transmit these signals using specific component carriers associated with the cell. In operation, base station 205 performs the techniques described below to achieve cross-band pairing. For example, base station 205 may use the transmit circuitry of transceiver circuitry 229 and antenna circuitry 235 to transmit information indicating multiple candidate uplink component carriers, as described below and Figure 5. The base station 205 receives a transmission (and / or an indication of a preference for a primary uplink component carrier) from a UE such as UE 115 on a selected primary uplink component carrier, as well as a capability report for each UE, which may be stored in the memory circuit system 249 and processed by the processor circuit system 226 to determine an uplink component carrier to be paired with a particular downlink carrier. The base station 205 and the UE communicate using the downlink component carrier and the one or more paired uplink component carriers. The base station 205 may optionally reconfigure the UE with a different (updated) primary uplink component carrier (and / or a different secondary uplink component carrier) during the connection. For example, the base station 205 may improve load balancing between more than one communicating UEs by changing the component carriers of one or more connected UEs and / or by configuring the component carrier to the UE as part of the connection. In another implementation, as described below and Figure 6 As described in , base station 205 may use antenna circuit system 235 and transceiver circuit system 229 to transmit information of the initially configured primary uplink component carrier, and may enter the connected station using the initially configured primary uplink component carrier. Upon receiving the capability report from the UE, the base station may optionally configure the UE with one or more secondary component carriers, and may optionally reconfigure the UE with a different primary uplink component carrier at some point.

[0036] Figure 3 A flow chart of a method 300 is shown that can be used by a UE 115 to communicate with a base station 105 using a connection that includes one or more uplink sub-mmW carriers paired with a particular downlink mmW component carrier. The method 300 is at least partially managed by the UE 115 so that it can autonomously select at least a primary uplink component carrier from a plurality of candidate uplink component carriers.

[0037] At 310, the UE 115 receives information indicating multiple candidate uplink component carriers from the base station 105. For example, when establishing a connection, a particular gNB advertises one or more sub-6 GHz uplink component carriers to pair with a particular mmW downlink component carrier. The received information includes an identification of each candidate uplink component carrier (e.g., frequency information, such as its center frequency). In some implementations, random access channel (RACH) parameters for each candidate uplink component carrier are also included in the advertisement of the candidate uplink component carrier. If the base station 105 is to use carrier aggregation on the downlink (multiple cells with one base station or cells from more than one base station), the UE 115 can receive information indicating multiple candidate uplink component carriers for some or all of the downlink component carriers, although the information can be provided at different times and need not come from a single base station 105.

[0038] At 320, in response to receiving the information, UE 115 selects at least a primary uplink component carrier that is consistent with the capabilities of UE 115, and optionally communicates an indication of the preferred primary uplink component carrier to base station 105. For example, if UE 115 supports some but not all uplink center frequencies, UE 115 selects the primary uplink component carrier from a set of S supported carriers for a total of T candidate uplink component carriers. If UE 115 supports more than one candidate uplink carrier, the UE may choose the primary uplink component carrier based on some aspect that makes one or more component carriers more preferred than other candidate uplink component carriers, or it may choose from the supported candidate uplink component carriers randomly or in some other manner (e.g., random selection) that is not based on characteristics of the candidate uplink component carriers.

[0039] For example, in some embodiments, UE 115 selects a primary uplink component carrier based on one or more uplink communication parameters that may make a particular candidate uplink component carrier more preferred than other candidate uplink component carriers. The uplink communication parameters include compatibility with UE 115, relative current / expected load levels of the candidate uplink component carriers, incumbent access to the candidate uplink component carriers, or other parameters.

[0040] One parameter that can be used to select at least the primary uplink component carrier is the compatibility of the UE with the candidate uplink component carriers. Some candidate uplink component carriers may be more compatible with the specific configuration of UE 115. For example, the UE may be able to support both the first and second candidate uplink component carriers, but its RF design may be more suitable for processing the center frequency of the first candidate uplink component carrier. Another parameter that can be used to select at least the primary uplink component carrier may be a consideration of the current and / or expected load of the candidate uplink component carrier. For example, UE 115 may use media sensing to determine the carrier load. If UE 115 observes that the load on the first candidate uplink component carrier is lower than that on the second candidate uplink component carrier, it may select the first candidate uplink carrier. Another parameter that can be used to select at least the primary uplink component carrier may be the incumbent access to different carriers. For example, if the incumbent has priority for the first candidate uplink component carrier rather than the second candidate uplink component carrier, UE 115 may select the second candidate uplink component carrier.

[0041] At 330, UE 115 communicates with base station 105 by transmitting a signal to base station 105; for example, using the selected primary uplink component carrier. During communication with base station 105, UE 115 uses the initially selected primary uplink component carrier to send a UE capability report including UE uplink carrier capability information. Base station 105 may use the UE capability report to configure one or more secondary uplink component carriers, or to reconfigure the primary uplink component carrier, as described below with reference to Figure 4 Described in more detail.

[0042] At 340, the UE 115 may select or be configured with one or more secondary uplink component carriers that are paired with the downlink mmW carrier. If the UE 115 selects a secondary uplink component carrier that is paired with the downlink mmW carrier, it may inform the base station 105 as part of its signaling, or in some implementations, it may implicitly inform the base station 105 by communicating with the base station 105 using the secondary uplink component carrier.

[0043] At 350, the UE 115 and the base station 105 communicate using a downlink mmW component carrier paired with a primary uplink component carrier and (optionally) one or more secondary uplink component carriers. In some implementations, the UE 115 may transmit control signaling on the primary uplink component carrier and use both the primary and secondary component carriers for data transmission. The control signaling transmitted on the primary uplink component carrier may include downlink HARQ (hybrid automatic repeat request) information, CSI (channel state information), scheduling request (SR) information, and RACH signaling.

[0044] At 360, at a later time, UE 115 may optionally select a different primary uplink component carrier and / or be reconfigured with a different primary uplink component carrier. For example, UE 115 may select a different primary uplink component carrier based on a change in a communication parameter, such as a change in the load of a different uplink component carrier. UE 115 may indicate a preferred primary uplink component carrier to base station 105, and may reconfigure the preferred primary uplink component carrier where appropriate. Base station 105 may reconfigure UE 115 based on communication conditions, such as load balancing between carriers.

[0045] Figure 4A flow chart of a method 400 is shown that may be used by a UE 115 to communicate with a base station 105 using a connection that includes one or more uplink component carriers in a non-mmW band (such as a sub-6 GHz band) paired with a particular downlink mmW component carrier. The method 400 is an implementation managed at least in part by the base station 105. For example, the gNB identifies at least an initially configured primary uplink component carrier from its allocated spectrum and advertises a single "paired" uplink component carrier and its corresponding RACH parameters in a transmission to the UE.

[0046] At 410, UE 115 receives information indicating an initially configured non-mmW primary uplink component carrier from base station 105 for pairing with a specific downlink mmW component carrier. The received information includes an identification of the initially configured primary uplink component carrier, such as its center frequency and / or other frequency information, and RACH parameters of the primary uplink component carrier.

[0047] At 420, in response to receiving the information, UE 115 enters a connected state using the initially configured primary uplink component carrier. At 430, UE 115 sends a UE capability report including UE uplink carrier capability information to base station 105 using the initially configured primary uplink component carrier. At 440, UE 115 may select or be configured with one or more secondary uplink component carriers paired with the downlink mmW carrier. For example, base station 105 may access the received UE uplink carrier capability information and determine that UE 115 can support more than one uplink component carrier, and in response, configure at least one secondary uplink component carrier for use by UE 115 on the uplink.

[0048] At 450, the UE 115 and the base station 105 communicate using a downlink mmW component carrier paired with a primary uplink component carrier and (optionally) one or more secondary uplink component carriers. In some implementations, the UE 115 may transmit control signaling on the primary uplink component carrier and use both the primary and secondary component carriers for data transmission. The control signaling transmitted on the primary uplink component carrier may include downlink HARQ (hybrid automatic repeat request) information, CSI (channel state information), scheduling request (SR) information, and RACH signaling.

[0049] At 460, UE 115 may select a different primary uplink component carrier and / or be configured with a different primary uplink component carrier at a later time. For example, UE 115 may indicate a preference for a different primary uplink component carrier (e.g., based on a change in a communication parameter, such as a change in the load of the different uplink component carriers). UE 115 may indicate a preferred primary uplink component carrier to base station 105 and may be reconfigured to the preferred primary uplink component carrier where appropriate. Base station 105 may reconfigure UE 115 based on communication conditions (e.g., load balancing between carriers).

[0050] Figure 5 A flow chart of a method 500 is shown that may be used by a base station 105 to communicate with a UE 115 using a connection that includes one or more uplink sub-mmW carriers paired with a particular downlink mmW component carrier. The method 500 is at least partially managed by the UE 115 such that it may autonomously select at least a primary uplink component carrier from a plurality of candidate uplink component carriers.

[0051] At 510, the base station 105 transmits information indicating a plurality of non-mmW candidate uplink component carriers to the UE 115. The base station 105 is associated with a particular telecommunications service provider and can select the candidate uplink component carriers from one or more of (1) a licensed spectrum allocation, (2) a shared spectrum portion, and (3) an unlicensed spectrum portion. For example, when establishing a connection, a particular gNB determines a plurality of sub-6 GHz uplink component carriers and advertises the candidate uplink component carriers to the UE 115 to pair with a particular mmW downlink component carrier.

[0052] At 520, the base station 105 receives a transmission from the UE 115 on the selected preferred primary uplink component carrier among the plurality of candidate uplink component carriers, and may receive an indication of the preferred primary uplink component carrier. During communication with the UE 115, the base station 105 receives a UE capability report including UE uplink carrier capability information. The base station 105 may configure the UE 115 with the preferred primary uplink component carrier or, in some cases, with a different primary uplink component carrier. For example, if the UE 115 supports different primary uplink component carriers but improves load balancing, the base station 105 may configure the UE 115 with a different primary uplink component carrier. The base station 105 may select the different primary component carrier based on the relative loads of the different uplink component carriers and the preferred uplink component carrier. The base station 105 may use the UE capability report to configure one or more secondary uplink component carriers, or reconfigure the primary uplink component carrier.

[0053] At 530, the base station 105 and the UE 115 communicate using a downlink mmW component carrier paired with a primary uplink component carrier and (optionally) one or more secondary uplink component carriers. In some implementations, for data transmissions from the UE 115, the base station 105 may receive control signaling on the primary uplink component carrier and receive data transmissions on both the primary and secondary component carriers.

[0054] At 540, at a later time, UE 115 may optionally be reconfigured with a different primary uplink component carrier. For example, UE 115 may prefer a different primary uplink component carrier based on changes in communication parameters, such as changes in loads of different uplink component carriers or other aspects, such as received signal strength indicators (RSSIs). UE 115 may indicate the preferred primary uplink component carrier to base station 105 and may be reconfigured to the preferred primary uplink component carrier where appropriate. Base station 105 may reconfigure UE 115 based on communication conditions, such as load balancing between carriers.

[0055] Figure 6 A flow chart of a method 600 is shown that may be used by a base station 105 to communicate with a UE 115 using a connection that includes one or more uplink component carriers in a non-mmW band (such as a sub-6 GHz band) paired with a particular downlink mmW component carrier. The method 600 is an implementation managed at least in part by the base station 105. For example, the gNB identifies at least an initially configured primary uplink component carrier from the available spectrum and advertises a single "paired" uplink component carrier and its corresponding RACH parameters in a transmission to the UE.

[0056] At 610, the base station 105 transmits information indicating the initially configured non-mmW primary uplink component carrier to the UE 115 for pairing with a specific downlink mmW component carrier. The transmitted information includes an identification of the initially configured primary uplink component carrier, such as its center frequency and / or other frequency information, and RACH parameters of the primary uplink component carrier.

[0057] In response to receiving the information, the base station 105 and the UE 115 enter a connected state using the initially configured primary uplink component carrier at 620. At 630, the base station 105 receives a UE capability report including UE uplink carrier capability information from the UE to the base station 105 using the initially configured primary uplink component carrier. At 640, the base station 105 may optionally configure the UE 115 with one or more secondary uplink component carriers paired with the downlink mmW carrier.

[0058] At 650, the UE 115 and the base station 105 communicate using a downlink mmW component carrier paired with a primary uplink component carrier and (optionally) one or more secondary uplink component carriers. As mentioned above, the UE 115 may transmit control signaling on the primary uplink component carrier and use both the primary and secondary component carriers for data transmission. The control signaling transmitted on the primary uplink component carrier may include downlink HARQ information, CSI, SR information, and RACH signaling.

[0059] At 660, the base station 105 may optionally reconfigure the UE 115 with a different primary uplink component carrier at a later time. For example, the base station 105 may receive an indication of preference for a different primary uplink component carrier from the UE 115 (e.g., based on a change in a communication parameter, such as a change in the load of the different uplink component carriers). If the preferred primary uplink component carrier is appropriate (e.g., not overloaded), the base station 105 may reconfigure the UE 115 to use the preferred primary uplink component carrier. In some implementations, the base station 105 may reconfigure the UE 115 to use a different primary uplink component carrier without an indication of the UE's preference; for example, to balance the load between the carriers.

[0060] It should be noted that these methods describe possible implementations, and each operation and step can be rearranged or otherwise modified so that other implementations are also possible. In some examples, aspects from two or more methods can be combined. For example, each aspect of each method can include the steps or aspects of other methods or other steps or technologies described herein.

[0061] The description herein is provided to enable those skilled in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to those skilled in the art, and the universal principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the broadest scope consistent with the principles and novel features disclosed herein.

[0062] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, each function can be stored on a computer-readable medium as one or more instructions or codes or transmitted by it. Other examples and implementations fall within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the above functions can be implemented using software, hardware, firmware, hard wiring, or any combination thereof executed by a processor. The features that implement the functions can also be physically located in various locations, including being distributed so that the various parts of the functions are implemented at different (physical) locations. In addition, as used herein (including in the claims), the "or" used in the enumeration of items (e.g., enumeration of items with words such as "at least one of" or "one or more of") indicates an inclusive enumeration, so that, for example, the enumeration of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C).

[0063] Computer-readable media include both computer storage media and communication media, including any media that facilitates the transfer of computer programs from one place to another. Computer storage media can be any available media that can be accessed by a general or special computer, but the phrase "computer storage media" does not refer to transient propagation signals. As an example and not limitation, computer storage media may include RAM, ROM, electrically erasable programmable read-only memory (EEPROM), compact disk (CD) ROM or other optical disk storage, disk storage or other magnetic storage devices, or other media that can be used to store instructions or data structure forms of desired program code means and can be accessed by a general or special computer, or a general or special processor. In addition, the connection that transmits information is called a communication medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of communication media.

[0064] The technology herein is described with reference to systems using broadband (such as 5G or new radio (NR) systems) and future systems using spectrum in the mmW range in the electromagnetic spectrum. Where applicable, the technology described herein can be used in various wireless communication systems, such as CDMA, TDMA, FDMA, OFDMA, single carrier frequency division multiple access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably. A CDMA system can implement radio technologies such as CDMA2000, Universal Terrestrial Radio Access (UTRA), etc. CDMA2000 covers IS-2000, IS-95, and IS-856 standards. IS-2000 versions 0 and A are often referred to as CDMA2000 1X, 1X, etc. IS-856 (TIA-856) is often referred to as CDMA2000 1xEV-DO, high rate packet data (HRPD), etc. UTRA includes broadband CDMA (WCDMA) and other CDMA variants. A TDMA system can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA systems can implement radio technologies such as ultra mobile broadband (UMB), evolved UTRA (E-UTRA), IEEE 802.11, IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, etc. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (Universal Mobile Telecommunications System (UMTS)). 3GPP LTE and Advanced LTE (LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-a, and GSM are described in documents from an organization called "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization called "3rd Generation Partnership Project 2" (3GPP2). The techniques described herein can be used for both the systems and radio technologies mentioned above and for other systems and radio technologies. However, the description herein describes a 5G system for example purposes, and 5G terms are used in most of the above descriptions, but these techniques can also be applied to applications beyond 5G applications.

[0065] A base station may include or may be referred to by a person skilled in the art as a base transceiver station, a radio base station, an access point (AP), a radio transceiver, a B node, an evolved B node (eNB), a home B node, a home evolved B node, a g B node, or some other suitable term. The geographic coverage area of ​​a base station may be divided into sectors that constitute only a portion of the coverage area. One or more wireless communication systems described herein may include different types of base stations (e.g., macro or small cell base stations). The UE described herein may be able to communicate with various types of base stations and network equipment (including macro eNBs, small cell eNBs, relay base stations, etc.). There may be overlapping geographic coverage areas of different technologies. In some cases, different coverage areas may be associated with different communication technologies. In some cases, the coverage area of ​​one communication technology may overlap with the coverage area associated with another technology. Different technologies may be associated with the same base station or different base stations.

[0066] A macro cell generally covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs with service subscriptions to a network provider. Compared to a macro cell, a small cell is a low-power base station that may operate in the same or different (e.g., licensed, unlicensed, etc.) frequency band as a macro cell. According to various examples, a small cell may include a pico cell, a femto cell, and a micro cell. A pico cell, for example, may cover a smaller geographic area and may allow unrestricted access by UEs with service subscriptions to a network provider. A femto cell may also cover a smaller geographic area (e.g., a residence) and may provide restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in the residence, etc.). An eNB for a macro cell may be referred to as a macro eNB. An eNB for a small cell may be referred to as a small cell eNB, a pico eNB, a femto eNB, or a home eNB. An eNB may support one or more (eg, two, three, four, etc.) cells (eg, component carriers (CCs)). A UE may be able to communicate with various types of base stations and network equipment including macro eNBs, small cell eNBs, relay base stations, etc.

[0067] One or more wireless communication systems described herein may support synchronous or asynchronous operation. For synchronous operation, each base station may have similar frame timing, and transmissions from different base stations may be approximately aligned in time. For asynchronous operation, each base station may have different frame timing, and transmissions from different base stations may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0068] DL transmissions described herein may also be referred to as forward link transmissions, and UL transmissions may also be referred to as reverse link transmissions. Each communication link described herein (including, for example, Figure 1 The wireless communication system 100 may include one or more carriers, where each carrier may be a signal composed of multiple subcarriers (e.g., waveform signals of different frequencies). Each modulated signal may be sent on a different subcarrier and may carry control information (e.g., reference signals, control channels, etc.), overhead information, user data, etc. The communication links described herein (e.g., Figure 1 A communication link) may use frequency division duplex (FDD) operation (e.g., using paired spectrum resources) or time division duplex (TDD) operation (e.g., using unpaired spectrum resources) to transmit bidirectional communications. A frame structure for FDD (e.g., frame structure type 1) and a frame structure for TDD (e.g., frame structure type 2) may be defined.

[0069] Therefore, various aspects of the present disclosure may provide carrier aggregation signaling. It should be noted that these methods describe possible implementations, and the operations and steps may be rearranged or otherwise modified so that other implementations are possible. In some examples, aspects from two or more methods may be combined.

[0070] The various illustrative blocks and modules described in conjunction with the disclosure herein may be implemented or executed with a general purpose processor, digital signal processor (DSP), ASIC, field programmable gate array (FPGA) or other 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 an 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, multiple microprocessors, one or more microprocessors in coordination with a DSP core, or any other such configuration). Thus, the functions described herein may be performed by one or more other processing units (or cores) on at least one integrated circuit (IC). In various examples, different types of ICs (e.g., structured / platform ASICs, FPGAs, or another semi-custom IC) that may be programmed in any manner known in the art may be used. The functions of each unit may also be implemented in whole or in part with instructions implemented in a memory that are formatted to be executed by one or more general or special purpose processors.

[0071] In the drawings, similar components or features may have the same or similar reference numbers. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes between the similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number regardless of the second reference number.

Claims

1. A method of wireless communication performed by a user equipment (UE) communicating with a network entity, the method comprising: receiving information indicating a plurality of candidate uplink component carriers in a non-mmW (millimeter wave) spectrum, each of the plurality of candidate uplink component carriers being available for association with a particular downlink component carrier in a different spectrum band; In response to receiving the information indicating the plurality of candidate uplink component carriers, selecting at least a primary uplink component carrier from the plurality of candidate uplink component carriers; as well as A signal is transmitted to the network entity using the primary uplink component carrier.

2. The method of claim 1, wherein: Each of the plurality of candidate uplink component carriers may be associated with a specific downlink component carrier in the mmW spectrum.

3. The method of claim 1, wherein: Receiving information indicating a plurality of candidate uplink component carriers in the non-mmW spectrum includes receiving at least frequency information and one or more random access channel (RACH) parameters for each of the candidate uplink component carriers.

4. The method of claim 1, wherein: Selecting at least a primary uplink component carrier from the plurality of candidate uplink component carriers includes determining that a set of S candidate uplink component carriers supported by the UE from a total of T candidate uplink component carriers are supported by the UE.

5. The method of claim 4, wherein: S is greater than 1, and the method further comprises selecting the primary uplink component carrier from among the S supported candidate uplink component carriers based on one or more uplink communication parameters.

6. The method of claim 5, wherein: The one or more uplink communication parameters include at least one parameter selected from the group consisting of: UE compatibility with each of the candidate uplink component carriers, a current load level of each of the S supported candidate uplink component carriers, an expected load level of each of the S supported candidate uplink component carriers, and an incumbent priority of each of the S supported candidate uplink component carriers.

7. The method of claim 1, further comprising: At least one secondary uplink component carrier is selected from the candidate uplink component carriers.

8. The method of claim 1, wherein: Transmitting the signal to the network entity using the primary uplink component carrier includes transmitting a UE capability report to the network entity using the primary uplink component carrier, the UE capability report including UE uplink carrier capability information.

9. The method of claim 8, further comprising: After transmitting the UE capability report to the network entity, a configuration of one or more secondary uplink component carriers associated with the particular downlink component carrier is received.

10. The method of claim 9, further comprising: Control signaling and data are transmitted to the network entity using the primary uplink component carrier, and data is transmitted to the network entity using the one or more secondary uplink component carriers.

11. The method of claim 8, further comprising: An updated configuration of a primary uplink component carrier is received.

12. The method of claim 11, further comprising: After receiving the updated configuration of the primary uplink component carrier, control information is transmitted to the network entity using the updated primary uplink component carrier.

13. The method of claim 1, further comprising transmitting an indication to indicate a preferred uplink component carrier to be used as the primary uplink component carrier.

14. A method of wireless communication performed by a user equipment (UE) in communication with a network entity, the method comprising: receiving information indicating an initially configured primary uplink component carrier from the network entity, wherein the initially configured primary uplink component carrier is a non-mmW carrier paired with a specific downlink carrier in a different spectrum band; transmitting a UE capability report to the network entity using the initially configured primary uplink component carrier, wherein the UE capability report includes UE uplink carrier capability information; and In response to the UE capability report, a configuration of one or more secondary uplink component carriers associated with the particular downlink carrier is received from the network entity.

15. The method of claim 14, wherein: The specific downlink carrier is a downlink mmW carrier.

16. The method of claim 14, further comprising: Control signaling and data are transmitted to the network entity using the primary uplink component carrier, and data is transmitted to the network entity using the one or more secondary uplink component carriers.

17. The method of claim 16, the control signaling comprising information having at least one information type selected from the group consisting of: downlink hybrid automatic repeat request (HARQ) information, channel state information (CSI), scheduling request (SR) information, and random access channel (RACH) information.

18. The method of claim 16, further comprising: An updated configuration of the primary uplink component carrier is received from the network entity at a later time.

19. The method of claim 18, further comprising: After receiving the updated configuration of the primary uplink component carrier, control information is transmitted to the network entity using the updated primary uplink component carrier.

20. The method of claim 14, further comprising transmitting an indication to indicate a preferred uplink component carrier to be used as the primary uplink component carrier.

21. A user equipment (UE) for wireless communication, comprising: means for receiving information indicating a plurality of candidate uplink component carriers in a non-mmW spectrum, each of the plurality of candidate uplink component carriers being available for association with a particular downlink component carrier in a different spectrum band; means for selecting at least a primary uplink component carrier from the plurality of candidate uplink component carriers in response to receiving the information indicative of the plurality of candidate uplink component carriers; as well as Means for transmitting a signal to a network entity using the primary uplink component carrier.

22. The user equipment of claim 21, wherein: Each of the plurality of candidate uplink component carriers may be associated with a specific downlink component carrier in the mmW spectrum.

23. The user equipment of claim 21, wherein: The means for receiving information indicative of a plurality of candidate uplink component carriers in the non-mmW spectrum includes means for receiving at least frequency information and one or more random access channel (RACH) parameters for each of the candidate uplink component carriers.

24. The user equipment of claim 21, wherein: The means for selecting at least a primary uplink component carrier from the plurality of candidate uplink component carriers includes means for determining that a set of S candidate uplink component carriers supported by the UE from a total of T candidate uplink component carriers are supported by the UE.

25. The user equipment of claim 24, wherein: S is greater than 1, and the user equipment further comprises means for selecting the primary uplink component carrier from among the S supported candidate uplink component carriers based on one or more uplink communication parameters.

26. The user equipment of claim 25, wherein: The one or more uplink communication parameters include at least one parameter selected from the group consisting of: UE compatibility with each of the candidate uplink component carriers, a current load level of each of the S supported candidate uplink component carriers, an expected load level of each of the S supported candidate uplink component carriers, and an incumbent priority of each of the S supported candidate uplink component carriers.

27. The user equipment of claim 21, further comprising: Means for selecting at least one secondary uplink component carrier from the candidate uplink component carriers.

28. A user equipment (UE) for wireless communication, comprising: means for receiving information indicating an initially configured primary uplink component carrier from a network entity, wherein the initially configured primary uplink component carrier is a non-mmW carrier paired with a specific downlink carrier in a different spectrum band; means for transmitting a UE capability report to the network entity using the initially configured primary uplink component carrier, wherein the UE capability report comprises UE uplink carrier capability information; and Means for receiving, in response to the UE capability report, from the network entity a configuration of one or more secondary uplink component carriers associated with the particular downlink carrier.

29. The user equipment of claim 28, wherein: The specific downlink carrier is a downlink mmW carrier.

30. The user equipment of claim 28, further comprising: Means for transmitting control signaling and data to the network entity using the primary uplink component carrier and transmitting data to the network entity using the one or more secondary uplink component carriers.

31. The user equipment of claim 30, wherein: The control signaling includes information having at least one information type selected from the group consisting of downlink hybrid automatic repeat request (HARQ) information, channel state information (CSI), scheduling request (SR) information, and random access channel (RACH) information.

32. The user equipment of claim 28, further comprising means for receiving an updated configuration of the primary uplink component carrier from the network entity after receiving the configuration of the initially configured primary uplink component carrier.

33. The user equipment of claim 32, further comprising: means for transmitting control information to the network entity using the updated primary uplink component carrier after receiving the updated configuration of the primary uplink component carrier.

34. The user equipment of claim 28, further comprising means for transmitting an indication to indicate a preferred uplink component carrier to be used as the primary uplink component carrier.

35. A user equipment (UE), comprising: receive circuitry configured to receive signals on one or more downlink carriers; a memory circuitry configured to store received information indicating a plurality of candidate uplink component carriers in a non-mmW spectrum, each of the plurality of candidate uplink component carriers being available for association with a particular downlink component carrier in a different spectrum band; processor circuitry configured to access information indicative of the plurality of candidate uplink component carriers and select at least a primary uplink component carrier; as well as Transmit circuitry is configured to transmit a signal to a network entity using the primary uplink component carrier.

36. The user equipment of claim 35, wherein: The receive circuitry is configured to receive mmW signals on one or more downlink mmW carriers.

37. The user equipment of claim 35, wherein: The information indicating a plurality of candidate uplink component carriers in the non-mmW spectrum includes at least frequency information of each of the candidate uplink component carriers and one or more random access channel (RACH) parameters.

38. The user equipment of claim 35, wherein: The processor circuitry is configured to select at least a primary uplink component carrier from the plurality of candidate uplink component carriers from a set of S candidate uplink component carriers supported by the UE out of a total of T candidate uplink component carriers supported by the UE.

39. The user equipment of claim 38, wherein: S is greater than 1, and wherein the processor circuitry is configured to select the primary uplink component carrier from among the S supported candidate uplink component carriers based on one or more uplink communication parameters.

40. The user equipment of claim 39, wherein: The one or more uplink communication parameters include at least one parameter selected from the group consisting of: UE compatibility with each of the candidate uplink component carriers, a current load level of each of the S supported candidate uplink component carriers, an expected load level of each of the S supported candidate uplink component carriers, and an incumbent priority of each of the S supported candidate uplink component carriers.

41. The user equipment of claim 35, wherein: The processor circuitry is further configured to select at least one secondary uplink component carrier from the candidate uplink component carriers.

42. The user equipment of claim 35, wherein: The processor circuitry is further configured to generate a message to be transmitted to the network entity, the message comprising a UE capability report including UE uplink carrier capability information.

43. A user equipment (UE) for wireless communication, comprising: a memory circuit system that stores received information from a network entity indicating an initially configured primary uplink component carrier, wherein the initially configured primary uplink component carrier is a non-mmW carrier paired with a specific downlink carrier in a different spectrum band, and the memory circuit system further stores received configuration information of one or more secondary uplink component carriers associated with the specific downlink carrier; processor circuitry configured to generate a UE capability report to be transmitted to the network entity using the initially configured primary uplink component carrier, wherein the UE capability report includes UE uplink carrier capability information; and Transmit circuitry that communicates the UE capability report to the network entity.

44. The user equipment of claim 43, wherein: The specific downlink carrier is a downlink mmW carrier.

45. The user equipment of claim 43, further comprising receiving circuitry, wherein: The receiving circuitry is configured to receive an updated configuration of a primary uplink component carrier from the network entity at a later time, and wherein the processor circuitry is further configured to generate control signaling to transmit to the network entity use of an initially configured primary uplink component carrier before the later time and use of an updated primary uplink component carrier after the later time.

46. ​​The user equipment of claim 45, wherein: The control signaling includes information having at least one information type selected from the group consisting of downlink hybrid automatic repeat request (HARQ) information, channel state information (CSI), scheduling request (SR) information, and random access channel (RACH) information.

47. A method of wireless communication performed by a network entity in communication with a user equipment (UE), the method comprising: transmitting information indicating a plurality of candidate non-mmW uplink component carriers to be paired with a particular downlink component carrier in different spectrum bands; receiving an indication of a preferred uplink component carrier among the plurality of candidate non-mmW uplink component carriers; selecting the preferred uplink component carrier or a different uplink component carrier as an initial primary uplink component carrier for the UE; as well as The UE is configured with the initial primary uplink component carrier.

48. The method of claim 47, wherein: The specific downlink component carrier is a downlink mmW component carrier.

49. The method of claim 47, wherein: The information indicating the plurality of candidate non-mmW uplink component carriers includes frequency information of each of the candidate non-mmW uplink component carriers and one or more random access channel (RACH) parameters.

50. The method of claim 47, wherein: Selecting the preferred uplink component carrier or a different uplink component carrier as an initial primary uplink component carrier includes selecting the different uplink component carrier as the initial primary uplink component carrier based on relative loads of the different uplink component carrier and the preferred uplink component carrier.

51. The method of claim 47, further comprising receiving a UE capability report including UE uplink carrier capability information, and configuring the UE with at least one secondary uplink component carrier based on the UE uplink carrier capability information.

52. The method of claim 47, further comprising, after configuring the UE with the initial primary uplink component carrier, configuring the UE with an updated primary uplink component carrier.

53. A network entity for wireless communication, comprising: means for transmitting information indicating a plurality of candidate non-mmW uplink component carriers to be paired with a particular downlink component carrier in a different spectrum band; means for receiving an indication of a preferred uplink component carrier among the plurality of candidate non-mmW uplink component carriers; means for selecting the preferred uplink component carrier or a different uplink component carrier as an initial primary uplink component carrier for the UE; as well as means for configuring the UE with the initial primary uplink component carrier.

54. The network entity of claim 53, wherein: The specific downlink component carrier is a downlink mmW component carrier.

55. The network entity of claim 53, wherein: The information indicating the plurality of candidate non-mmW uplink component carriers includes frequency information of each of the candidate non-mmW uplink component carriers and one or more random access channel (RACH) parameters.

56. The network entity of claim 53, wherein: The means for selecting the preferred uplink component carrier or a different uplink component carrier as an initial primary uplink component carrier comprises means for selecting the different uplink component carrier as an initial uplink component carrier based on relative loading of the different uplink component carrier and the preferred uplink component carrier.

57. The network entity of claim 53, further comprising means for receiving a UE capability report comprising UE uplink carrier capability information, and configuring the UE with at least one secondary uplink component carrier based on the UE uplink carrier capability information.

58. The network entity of claim 53, further comprising means for configuring the UE with an updated primary uplink component carrier after configuring the UE with the initial primary uplink component carrier.

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