Apple Patent | Electronic Device Content Provisioning Adjustments Based On Wireless Communication Channel Bandwidth Condition
Publication Number: 20200107060
Publication Date: 20200402
Applicants: Apple
Abstract
An electronic device includes a wireless transceiver configured to receive content primitives via a wireless communication channel. The electronic device also includes control circuitry control circuitry coupled to the wireless transceiver, and configured to perform content provisioning operations based on the received content primitives, wherein the content provisioning operations comprise generating content image data and transmitting the content image data to the wireless communication channel using the wireless transceiver. In response to a bandwidth condition of the wireless communication channel being less than a threshold, the control circuitry is configured to perform adjusted content provisioning operations that decrease an amount of content image data conveyed by the wireless transceiver to the wireless communication channel.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to U.S. Provisional Patent Application No. 62/738,883, filed September 28, 2018.
BACKGROUND
[0002] Mobile devices with graphical user interfaces (GUIs) and wireless communication interfaces are widespread. While permanent storage of content to be display on a mobile device is possible, efforts to expand content provisioning to mobile devices via wireless communication channels are ongoing. There are conflicting limitations related to cameras, display quality, content generation, processing speed, wireless communication channel bandwidth, and system cost that have not been adequately resolved. Efforts to improve content provisioning to mobile devices via wireless communication channels are ongoing.
SUMMARY
[0003] In accordance with at least one embodiment of the disclosure, an electronic device comprises a wireless transceiver configured to receive content primitives via a wireless communication channel. The electronic device also comprises control circuitry control circuitry coupled to the wireless transceiver, and configured to perform content provisioning operations based on the received content primitives, wherein the content provisioning operations comprise generating content image data and transmitting the content image data to the wireless communication channel using the wireless transceiver. In response to a bandwidth condition of the wireless communication channel being less than a threshold, the control circuitry is configured to perform adjusted content provisioning operations that decrease an amount of content image data conveyed by the wireless transceiver to the wireless communication channel.
[0004] In accordance with at least one embodiment of the disclosure, a method comprises receiving, by an electronic device, content primitives via a wireless communication channel. The method also comprises performing, by the electronic device, content provisioning operations based on the received content primitives. The content provisioning operations involve generating content image data and transmitting the content image data to the wireless communication channel, wherein at least some the content image data corresponds to computer-generated reality (CGR) content. The method also comprises, in response to the bandwidth condition of the wireless communication channel being less than a threshold, adjusting the content provisioning operations by decreasing an amount of content image data conveyed to the wireless communication channel.
BRIEF DESCRIPTION OF THE DRAWINGS
[0005] For a detailed description of various examples, reference will now be made to the accompanying drawings in which:
[0006] FIG. 1 is a block diagram showing a system in accordance with various embodiments;
[0007] FIG. 2 is a chart showing mobile device features relative to bandwidth conditions of a wireless communication channel in accordance with various embodiments;
[0008] FIG. 3 is a chart showing a baseline distribution of uplink (mobile device to electronic device) bandwidth in accordance with various embodiments;
[0009] FIG. 4 is a chart showing a baseline distribution of downlink (electronic device to mobile device) bandwidth in accordance with various embodiments;
[0010] FIG. 5 is a chart showing a baseline distribution of uplink (mobile device to electronic device) bandwidth demand in accordance with various embodiments;
[0011] FIG. 6 is a chart showing a baseline distribution of downlink (electronic device to mobile device) bandwidth demand in accordance with various embodiments;
[0012] FIG. 7 is a block diagram showing a system for managing content provisioning operations in a mobile device in accordance with various embodiments;
[0013] FIG. 8 is a block diagram of a content provisioning manager for a mobile device in accordance with various embodiments;
[0014] FIG. 9 is a block diagram showing a computer system configured to perform content provisioning operations in accordance with various embodiments;
[0015] FIG. 10 is a diagram showing downlink (electronic device to mobile device) content provisioning adjustments as a function of a channel bandwidth condition in accordance with various embodiments;
[0016] FIG. 11 is a block diagram showing a content provisioning manager for an electronic device in accordance with various embodiments;* and*
[0017] FIG. 12 is a block diagram showing another computer system configured to perform content provisioning operations in accordance with various embodiments;* and*
[0018] FIG. 13 is a flow chart showing a content provisioning method for a mobile device in accordance with various embodiments.
DETAILED DESCRIPTION
[0019] Disclosed herein are content display devices, systems, and related methods with content provisioning adjustments based on a wireless communication channel bandwidth condition.
[0020] in some embodiments, an example content display system includes a mobile device (e.g., a handheld or head-mounted device) and an electronic device (e.g., a desktop computer, laptop computer, a base station, or other electronic device) in communication via a wireless communication channel. Over time, the condition of the wireless communication channel bandwidth varies, which affects the amount of data that can be conveyed from the mobile device to the electronic device or vice versa. In response to detected changes in the wireless communication channel bandwidth, content provisioning operations of the mobile device and the electronic device are updated.
[0021] In some embodiments, in response to a bandwidth condition of the wireless communication channel being less than a threshold, the content provisioning operations of the mobile device and the electronic device are adjusted by increasing an amount of image processing operations performed by the mobile device and decreasing an amount of content conveyed between the electronic device and the mobile device via the wireless communication channel. Thereafter, in response to a bandwidth condition of the wireless communication channel being greater than a threshold, the content provisioning operations of the mobile device and the electronic device are adjusted by decreasing an amount of image processing operations performed by the mobile device and increasing an amount of content conveyed between the electronic device and the mobile device via the wireless communication channel. Various other content provisioning options and related operations are described herein, where different content provisioning options are used in response to the bandwidth condition of the wireless communication channel (e.g., using one or more bandwidth condition thresholds and/or an amount of time above or below a given bandwidth condition threshold).
[0022] Example content provisioning operations performed by the mobile device include, but are not limited to, priority-based transmission of camera images or other content primitives to the electronic device, image/data compression adjustments for images/data to be conveyed to the electronic device via the wireless communication channel, video frames per second adjustments for camera settings and/or captured camera images, image resolution adjustments, foveation filter adjustments, and local data processing adjustments (e.g., changing an amount of image/data processing operations and/or the image/data processing algorithms used). As used herein, “content primitives” refers to any sensor-based data that can be used to generate content for display. One example of content primitives includes camera image data. In different embodiments, one or more of the content provisioning operations of the mobile device are adjusted based on bandwidth condition thresholds and/or an amount of time above or below a given bandwidth condition threshold
[0023] Example content provisioning operations performed by the electronic device include, but are not limited to, rate control adjustments for data to be conveyed to the mobile device, foveation filter adjustments, color space adjustments, image/content frames per second adjustments, and downscaling adjustments (e.g., wavelet decomposition adjustments), content generation (e.g., encoded content/video layers), and providing content (e.g., encoded content/video layers) to a mobile device. In different embodiments, one or more of the content provisioning operations of the electronic device are adjusted based on bandwidth condition thresholds and/or an amount of time above or below a given bandwidth condition threshold. To provide a better understanding, various content display devices, systems, and methods involving content provisioning adjustments performed based on the bandwidth condition of a wireless communication channel are described using the figures as follows.
[0024] FIG. 1 is a block diagram showing a content display system 100 in accordance with various embodiments. As shown, the content display system 100 includes a mobile device 102 (e.g., a handheld or head-mounted device) and an electronic device 112 in communication with each other via a wireless communication channel 118. More specifically, the mobile device 102 of FIG. 1 includes a display 104, sensor(s) 106 (e.g., cameras or other sensors), a control circuitry 108, and a wireless transceiver 110. In some embodiments, the display 104 is a liquid crystal display (LCD) display, an organic light-emitting diode (OLED) display, or a holographic display. Also, the sensor(s) 106 are configured to capture ambient environment images. Additionally or alternatively, the sensor(s) 106 may capture images of a user’s face (e.g., to track facial expressions), eyes, and/or hands (e.g., to track hand motions). Additionally or alternatively, the sensor(s) 106 capture images of a nearby object (e.g., to track object position or motion). The control circuitry 108 of the mobile device 102 performs various operations to adjust content provisioning operations based on the bandwidth condition of the wireless communication channel 118. The control circuitry 108 may also perform other operations. In some embodiments, the control circuitry 108 corresponds to at least one processor and computer-readable medium with software instructions to perform the content provisioning operations described herein.
[0025] Example operations of the control circuitry 108 include determining a condition of the wireless communication channel 118, and responding to the determined condition of the wireless communication channel 118 by adjusting content provisioning operations performed by the mobile device 102. In some embodiments, adjustable content provisioning operations of the mobile device 102 include, but are not limited to, priority-based transmission of content primitives (e.g., camera images or other content primitives that can be used to provide content after some processing or other content provisioning operations) to the electronic device 112, image/data compression adjustments for images/data to be conveyed to the electronic device 112 via the wireless communication channel 118, the video frames per second for camera settings and/or captured images, image resolution adjustments, foveation filter adjustments, and local data processing adjustments (e.g., changing an amount of image/data processing operations and/or the image/data processing algorithms used). In different embodiments, one or more of the content provisioning operations of the mobile device 102 are adjusted by the control circuitry 108 based on bandwidth condition thresholds for the wireless communication channel 118 and/or an amount of time above or below a given bandwidth condition threshold for the wireless communication channel 118.
[0026] Meanwhile, the electronic device 112 of FIG. 1 includes a control circuitry 114 and a wireless transceiver 116. The control circuitry 114 of the electronic device 112 performs various operations to adjust content provisioning operations based on the bandwidth condition of the wireless communication channel 118. The control circuitry 114 may also perform other operations. In some embodiments, the control circuitry 114 corresponds to at least one processor and computer-readable medium with software instructions to perform the content provisioning operations described herein.
[0027] Example operations of the control circuitry 114 include determining a condition of the wireless communication channel 118, and responding to the determined condition of the wireless communication channel 118 by adjusting content provisioning operations performed by the electronic device 112. In some embodiments, adjustable content provisioning operations of the electronic device 112 include, but are not limited to, rate control adjustments for data to be conveyed to the mobile device 102, foveation filter adjustments, color space adjustments, image/content frames per second adjustments, and downscaling adjustments (e.g., wavelet decomposition adjustments), content generation (e.g., encoded content/video layers), and providing content (e.g., encoded content/video layers) to the mobile device 102. In different embodiments, one or more of the content provisioning operations of the electronic device 112 are adjusted based on bandwidth condition thresholds for the wireless communication channel 118 and/or an amount of time above or below a given bandwidth condition threshold for the wireless communication channel 118.
[0028] In some embodiments, the operations of the control circuitry 108 and the control circuitry 114 vary depending on the mobile device features in use. Example mobile device features may be based on cameras including, but are not limited to, eye cameras, hand tracking cameras, face cameras, depth cameras, and scene cameras. Example mobile device features based on camera images include, but are not limited to, generating content layers, generating 3D objects, video matting, object tracking (e.g., hand-tracking, eye-tracking, face/expression tracking), and/or other features. In different embodiments, the camera settings (e.g., resolution in ppd or pixels/mm, fps, bit rate) may vary for different features or for different modes of the same mobile device feature. When the bandwidth condition of the wireless communication channel 118 is above a threshold, more features and related uses of cameras is possible, where at least some camera image data used is conveyed from the mobile device 102 to the electronic device 112, and related content is conveyed from the electronic device 112 to the mobile device 102. As the bandwidth condition of the wireless communication channel 118 decreases, the set of features or modes being supported can be adjusted, such that the amount of camera image data conveyed from the mobile device 102 to the electronic device 112 via the wireless communication channel 118 is decreased. Similarly, when the set of features or modes being supported is adjusted due to a deteriorated bandwidth condition of the wireless communication channel, the amount of content data conveyed from the electronic device 112 to the mobile device 102 via the wireless communication channel 118 is decreased. In such case, the content provisioning operations of the mobile device 102 and the electronic device 112 are adjusted such that the overall features being supported is temporarily decreased, which reduces the amount of data conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0029] In one example, the mobile device 102 includes a plurality of sensors 106. In response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve adjusting the operation of the sensors 106, adjusting settings of sensor data captured by the sensors 106, and/or omitting conveyance of at some sensor data captured by the sensors 106 based on a sensor or sensor data prioritization scheme. In some examples, adjusted content provisioning operations of the mobile device 102 involve selectively applying a prioritization scheme to image processing operations to be performed by the mobile device 102 or the electronic device 112 and omitting or migrating some of the image processing operations based on the prioritization scheme.
[0030] In one example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 or the electronic device 112 involve selectively adjusting a quantity of image data processing algorithms to be used by the mobile device 102 or the electronic device 112.
[0031] In one example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning adjustments of the mobile device 102 involve selectively adjusting a compression option for image data captured by the sensor(s) 106 and conveyed from the mobile device 102 to the electronic device 112 via the wireless communication channel 118.
[0032] In one example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve selectively adjusting a frames per second for image data captured by the sensor(s) 106 and conveyed from the mobile device 102 to the electronic device 112 via the wireless communication channel 118.
[0033] In one example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve selectively adjusting a resolution option for image data by the sensor(s) 106 and conveyed from the mobile device 102 to the electronic device 112 via the wireless communication channel 118.
[0034] In one example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve selectively adjusting a foveation option for image data captured by the sensor(s) 106 and conveyed from the mobile device 102 to the electronic device 112 via the wireless communication channel 118.
[0035] In one example, the sensor(s) 106 include an eye camera. In response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively performing image data processing operations associated with the eye camera. In such case, eye camera data does not need to be conveyed from the mobile device 102 to the electronic device 112, which results in a reduced amount of data being conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0036] In one example, the sensor(s) 106 include a hand tracking camera. In response to a bandwidth condition of the wireless communication channel being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively performing image data processing operations associated with the hand tracking camera. In such case, hand tracking camera data does not need to be conveyed from the mobile device 102 to the electronic device 112, which results in a reduced amount of data being conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0037] In one example, the sensor(s) 106 include at least one scene camera and at least one face camera. In response to a bandwidth condition of the wireless communication channel being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively compressing image data associated with the at least one scene camera more than image data associated with the at least one face camera.
[0038] In one example, the sensor(s) 106 include a depth camera, and a scene camera. In response to a bandwidth condition of the wireless communication channel being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively adjusting a priority of camera image data associated with the depth camera, and the scene camera. In an example prioritization adjustment, some of the data camera image data associated with the depth camera, and the scene camera is not conveyed from the mobile device 102 to the electronic device 112 (or is compression more than other types of camera image data), which results in a reduced amount of data being conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0039] In one example, the sensor(s) 106 include one or more cameras for obtaining head pose tracking data. In response to a bandwidth condition of the wireless communication channel being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively processing head pose tracking data and conveying other camera image data to the electronic device 112. In such case, head pose tracking data does not need to be conveyed from the mobile device 102 to the electronic device 112, which results in a reduced amount of data being conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0040] In one example, the sensor(s) 106 include one or more cameras for obtaining gaze tracking data. In response to a bandwidth condition of the wireless communication channel being less than a threshold, adjusted content provisioning operations of the mobile device 102 involve the mobile device 102 selectively processing gaze tracking data and conveying other camera image data to the electronic device 112. In such case, gaze tracking data does not need to be conveyed from the mobile device 102 to the electronic device 112, which results in a reduced amount of data being conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0041] In one example, adjusted content provisioning operations of the mobile device 102 involve selectively conveying reduced amounts of captured camera data for matting operations from the mobile device 102 to the electronic device 112 until a threshold channel degradation condition is met, and performing matting operations by the mobile device 102 in response to the threshold channel degradation condition being met. When the mobile device 102 performs matting operations, a reduced amount of data is conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0042] In one example, adjusted content provisioning operations of the mobile device 102 or the electronic device 112 involve eliminating at least one of 3D room reconstruction operations and object matching operations. By eliminating 3D room reconstruction operations and object matching operations, a reduced amount of data is conveyed via the wireless communication channel 118 (mobile device to electronic device, or electronic device to mobile device).
[0043] In one example, the control circuitry 114 for the electronic device 112 and/or the control circuitry 108 for the mobile device 102 is configured to adjust content provisioning operations that affect the content to be displayed on the electronic device 112, where the adjusted content provisioning operations of the electronic device 112 involve different compression options for content data to be conveyed by the transceiver to the mobile device 102 via the wireless communication channel 118. For example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts the content provisioning operations of the electronic device 112 by selecting between different channel adaptive rate control options. In another example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts content provisioning operations of the electronic device 112 by selecting between different MCS states.
[0044] In another example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts content provisioning operations of the electronic device 112 by selecting between different foveation filter strength options. In another example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts content provisioning operations of the electronic device 112 by selecting between different color space options. In another example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts content provisioning operations of the electronic device 112 by selecting between different frame per second options. In another example, in response to a bandwidth condition of the wireless communication channel 118 being less than a threshold, the control circuitry 108 of the mobile device 102 or the control circuitry 114 for the electronic device 112 adjusts content provisioning operations of the electronic device 112 by selecting between different downscaling options.
[0045] In some embodiments, the control circuitry 114 for the electronic device 112 selectively combines a plurality of different compression options in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a predetermined amount of time, where the plurality of different compression options include data rate options, foveation filter strength options, color space options, frames per second adaptation options, and downscaling options. In one example, the control circuitry 114 for the electronic device 112 adjusts the data rate options as a first priority in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a first time interval. Also, the control circuitry 114 for the electronic device 112 adjusts the foveation filter strength options as a second priority in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a second time interval greater than the first time interval. Also, the control circuitry 114 for the electronic device 112 adjusts the color space options as a third priority in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a third time interval greater than the second time interval. Also, the control circuitry 114 for the electronic device 112 adjusts the frames per second adaptation options as a fourth priority in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a fourth time interval greater than the third time interval. Also, the control circuitry 114 for the electronic device 112 adjusts the downscaling options as a fifth priority in response to the bandwidth condition of the wireless communication channel 118 being less than a threshold for a fifth time interval greater than the fourth time interval. Other content provisioning prioritization scheme options, including data compression prioritization options for an electronic device such as the electronic device 112, are possible. Also, dynamic adjustment of content provisioning prioritization scheme options, including data compression prioritization options for an electronic device such as the electronic device 112, are possible. In some examples, dynamic adjustment of content provisioning prioritization scheme options are based on channel condition, user preference, content quality metrics, and/or other criteria. For example, an existing prioritization scheme can be updated to a new prioritization scheme based on the bandwidth condition of a channel, user preference, content quality metrics, and/or other criteria.
[0046] FIG. 2 is a chart 200 showing mobile device features relative to bandwidth conditions of a wireless communication channel such as the wireless communication channel 118 of FIG. 1 in accordance with various embodiments. In the chart 200 example modulation and coding scheme (MCS) states and related data rates for single channel and channel bonding scenarios are represented. As the MCS state decreases, the available bandwidth on a wireless communication channel, such as the wireless communication channel 118, decreases. Accordingly, mobile device features range from “enhanced” near maximum MCS state to “compromised” near minimum MCS state as the available bandwidth for conveying information between an electronic device (e.g., the electronic device 112) and a mobile device (e.g., the mobile device 102) becomes more limited.
[0047] As an example, with a maximum MCS state, the mobile device 102 is able to transfer a large amount of content primitives (e.g., sensor data, camera image data and/or other data) to the electronic device 112. Also, with maximum MCS state, the electronic device 112 uses the content primitives to prepare and convey a large amount of content data to the mobile device 102. In such case, the content and/or the mobile device features available for use with the content are enhanced. In contrast, with the minimum MCS state, the mobile device 102 is not able to transfer a large amount of content primitives (e.g., sensor data, camera image data and/or other data) to the electronic device 112. Likewise, with the minimum MCS state, the electronic device 112 is unable to convey a large amount of content data to the mobile device 102. In such case, the mobile device 102 prepares more of the content data, but the content and/or the mobile device features available for use with the content are compromised. Below the minimum MCS state, the mobile device 102 transitions to a stand-alone mode, where the mobile device 102 generates in own content. In such case, the content and/or the mobile device features available for use with the content are compromised. In this example, the mobile device 102 is capable of generating content in a stand-alone mode as needed, but the preferred content display scenario involves an exchange of data between the mobile device 102 and the electronic device 112. Thus, as the MCS state increases, the amount of data exchanged between the mobile device 102 and the electronic device 112 increases along the quality of content and/or mobile device features.
[0048] FIG. 3 is a chart 300 showing a baseline distribution of uplink (mobile device to electronic device) bandwidth in accordance with various embodiments. In chart 300, the baseline distribution of uplink bandwidth corresponds to different types of content primitives (e.g., sensor data, camera image data, or other data) provided by a mobile device such as the mobile device 102. In the example of chart 300, different types of content primitives (CP1-CP7) are represented. In one example, CP1-CP7 correspond captured camera image data such as eye camera data, depth camera data, camera data, and scene camera data. In other example, CP1-CP7 correspond to other types of content primitives. In some embodiments, when the bandwidth condition of a wireless communication channel (e.g., the wireless communication channel 118) is above a threshold, the baseline distribution of uplink bandwidth represented in chart 300 is used. Otherwise, when the bandwidth condition of a wireless communication channel (e.g., the wireless communication channel 118) is below the threshold, the distribution of uplink bandwidth varies from what is represented in chart 300. For example, the distribution of uplink bandwidth for certain bandwidth conditions may increase, reduce, or eliminate the bandwidth allocation for one or more types of content primitives.
[0049] In some examples, mobile device content provisioning options for the baseline distribution of uplink bandwidth of FIG. 3 involves predetermined settings for the number of cameras used, image height options (e.g., in pixels), image width options (e.g., in pixels), frames per second options (fps), bits per pixel options (bpp), data rate options, and compression options. In response to different bandwidth conditions of a wireless communication channel (e.g., the wireless communication channel 118), the mobile device content provisioning options are adjusted from the predetermined settings of a baseline distribution for uplink bandwidth.
