PAL 竞价已于 2020 年 8 月 25 日结束。在美国每个县，最多只能竞价七个频道，并且单个运营商在任何一个县最多只能获得四个频道。联邦通讯委员会 (FCC) 数据库会发布 PAL 许可证持有者名单。许可有效期为 10 年。
PAL 许可持有者可以将其 PAL 许可与 CBRS 状态摘要中所示的开始日期的任何 SAS 搭配使用。
PAL 频道分配
SAS 管理员协调开发了 PAL 信道分配方法，以符合 WInnforum 中制定的 CBRS 功能和运营要求。该方法的开发过程是，接收每个运营商针对其参与竞价的逻辑 PAL 频道的频道偏好设置的输入。
所有 PAL 许可持有者均在 2020 年 12 月收到了有关 PAL 频道分配程序的信息。如果您未收到有关 PAL 渠道分配流程的电子邮件，或者想详细了解分配流程，请发送电子邮件至 cbrs_pal_channels@outlook.com，与 SAS 管理员联系。
二级市场
PAL 许可持有人可以将其 PAL 许可出售或再许可给其他运营商，许可范围可以是全部或部分。Google SAS 可以将分许可协议记录在 FCC 通用许可系统 (ULS) 数据库中。为了验证许可证持有人对 PAL 或 PAL 分许可的声明，SAS 会检查 FCC ULS 数据库。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-08-18。"],[],[],null,["# Priority Access Licenses\n\nThe Citizens Broadband Radio Service (CBRS) band operates as a shared spectrum with three tiers\nof users. The [Priority Access License (PAL)](/spectrum-access-system/docs/key-terms#pal)\nresides in Tier 2. The following diagram shows the tiers in the CBRS band.\n[](/static/spectrum-access-system/docs/images/about-pal.svg) Tiers in the CBRS band (click to enlarge)\n\nInterference protection\n-----------------------\n\nTo get protection from\n[General Authorized Access (GAA)](/spectrum-access-system/docs/key-terms#gaa)---users\nin the third tier---interference, you can buy a PAL at an auction. Each\nPAL receives interference protection in\n[PAL Protection Areas (PPAs)](/spectrum-access-system/docs/key-terms#ppa)\non a 10-MHz channel from 3550 MHz to 3650 MHz. The interference\nprotection tiers are explained as follows.\n\n### Tier 1\n\nTier 1 [incumbents](/spectrum-access-system/docs/key-terms#incubment) get\nprotection from both PAL and GAA users. Within a protection area, channel\navailability and power limitations apply to PAL and GAA users equally.\n\nFor example, in a [Dynamic Protection Area (DPA)](/spectrum-access-system/docs/key-terms#dpa),\ngrants on PAL channels can be suspended due to DPA activations. The CBSDs\ncan request grants on GAA channels, but aren't protected from GAA interference.\n\n### Tier 2\n\nTier 2 PAL users get interference protection from GAA users. When a PPA goes\ninto effect, GAA users with grants on PAL channels that are determined to cause\ninterference to the PPA have their grants terminated with [error code 500](/spectrum-access-system/docs/cbsd/errors-grant-suspension#troubleshooting-matrix).\nSometimes, the grant termination includes suggested operating parameters such as\na lower [Effective Isotropic Radiated Power (EIRP)](/spectrum-access-system/docs/key-terms#eirp).\n\nAlthough PAL users have a right to protection in the entire county, they are\nprotected only where they have deployed CBSDs and only on their\nPAL channels. The PPAs generally cover only part of a county's license area,\nleaving space where GAA users can operate freely on PAL channels. In every\ncounty, there are eight channels that are never allocated for PAL. That means\nthat all 15 channels could be available to GAA users in any county.\n\n### Tier 3\n\nTier 3 GAA users are unlicensed with no guaranteed interference protection. In this tier,\nCBSD operates as licensed-by-rule.\n\nPAL auction\n-----------\n\nThe PAL auction was closed on August 25, 2020. A maximum of seven channels were\nauctioned in each US county where a single operator was limited to a maximum of\nfour channels in any county. The [Federal Communications Commission (FCC)](/spectrum-access-system/docs/key-terms#fcc)\ndatabase publishes the list of PAL licensees. Licenses are valid for ten years.\nPAL licensees can use their PAL licenses with any SAS with a start\ndate indicated in the [CBRS status summary](https://cbrs.wirelessinnovation.org/cbrs-status-summary).\n\nPAL channel allocation\n----------------------\n\nSAS administrators coordinated to develop a methodology for PAL\nchannel allocation in accordance with the CBRS functional and\noperational requirement developed in WInnforum. The methodology is developed by\nreceiving the inputs from each operator on their channel preference for their\nauctioned logical PAL channels.\n\nAll PAL licensees received information on the PAL Channel Assignment Procedure\nin December 2020. If you didn't get the email about the PAL channel assignment\nprocedure, or if you want to know more about the assignment procedure, write an\nemail to SAS administrators at\n[cbrs_pal_channels@outlook.com](mailto:cbrs_pal_channels@outlook.com).\n\nSecondary market\n----------------\n\nThe PAL licensees can sell or sub-license their PALs to other operators for all\nor part of the license area. Sub-license agreements can be recorded by Google\nSAS in the [FCC Universal Licensing System (ULS) database](https://www.fcc.gov/wireless/universal-licensing-system).\nTo verify a licensee's claim of a PAL or sub-licensed PAL, SAS\nchecks the FCC ULS database.\n\nWhat's next\n-----------\n\n- Learn how to [use PALs in the SAS Portal](/spectrum-access-system/docs/use-pals).\n- Learn about [SAS sync (or IAP)](/spectrum-access-system/docs/sas-sync).\n- Learn about [Spectrum Access System](/spectrum-access-system/docs/overview).\n- Learn about [key SAS terms](/spectrum-access-system/docs/key-terms).\n- [Troubleshoot SAS issues](/spectrum-access-system/docs/troubleshooting)."]]
